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# encoding: US-ASCII
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# frozen_string_literal: true
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# = csv.rb -- CSV Reading and Writing
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#
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# Created by James Edward Gray II on 2005-10-31.
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#
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# See CSV for documentation.
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#
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# == Description
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#
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# Welcome to the new and improved CSV.
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#
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# This version of the CSV library began its life as FasterCSV. FasterCSV was
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# intended as a replacement to Ruby's then standard CSV library. It was
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# designed to address concerns users of that library had and it had three
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# primary goals:
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#
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# 1. Be significantly faster than CSV while remaining a pure Ruby library.
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# 2. Use a smaller and easier to maintain code base. (FasterCSV eventually
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# grew larger, was also but considerably richer in features. The parsing
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# core remains quite small.)
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# 3. Improve on the CSV interface.
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#
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# Obviously, the last one is subjective. I did try to defer to the original
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# interface whenever I didn't have a compelling reason to change it though, so
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# hopefully this won't be too radically different.
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#
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# We must have met our goals because FasterCSV was renamed to CSV and replaced
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# the original library as of Ruby 1.9. If you are migrating code from 1.8 or
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# earlier, you may have to change your code to comply with the new interface.
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#
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# == What's the Different From the Old CSV?
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#
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# I'm sure I'll miss something, but I'll try to mention most of the major
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# differences I am aware of, to help others quickly get up to speed:
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#
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# === CSV Parsing
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#
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# * This parser is m17n aware. See CSV for full details.
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# * This library has a stricter parser and will throw MalformedCSVErrors on
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# problematic data.
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# * This library has a less liberal idea of a line ending than CSV. What you
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# set as the <tt>:row_sep</tt> is law. It can auto-detect your line endings
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# though.
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# * The old library returned empty lines as <tt>[nil]</tt>. This library calls
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# them <tt>[]</tt>.
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# * This library has a much faster parser.
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#
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# === Interface
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#
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# * CSV now uses Hash-style parameters to set options.
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# * CSV no longer has generate_row() or parse_row().
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# * The old CSV's Reader and Writer classes have been dropped.
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# * CSV::open() is now more like Ruby's open().
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# * CSV objects now support most standard IO methods.
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# * CSV now has a new() method used to wrap objects like String and IO for
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# reading and writing.
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# * CSV::generate() is different from the old method.
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# * CSV no longer supports partial reads. It works line-by-line.
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# * CSV no longer allows the instance methods to override the separators for
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# performance reasons. They must be set in the constructor.
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#
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# If you use this library and find yourself missing any functionality I have
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# trimmed, please {let me know}[mailto:james@grayproductions.net].
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#
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# == Documentation
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#
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# See CSV for documentation.
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#
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# == What is CSV, really?
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#
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# CSV maintains a pretty strict definition of CSV taken directly from
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# {the RFC}[http://www.ietf.org/rfc/rfc4180.txt]. I relax the rules in only one
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# place and that is to make using this library easier. CSV will parse all valid
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# CSV.
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#
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# What you don't want to do is to feed CSV invalid data. Because of the way the
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# CSV format works, it's common for a parser to need to read until the end of
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# the file to be sure a field is invalid. This consumes a lot of time and memory.
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#
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# Luckily, when working with invalid CSV, Ruby's built-in methods will almost
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# always be superior in every way. For example, parsing non-quoted fields is as
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# easy as:
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#
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# data.split(",")
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#
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# == Questions and/or Comments
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#
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# Feel free to email {James Edward Gray II}[mailto:james@grayproductions.net]
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# with any questions.
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require "forwardable"
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require "English"
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require "date"
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require "stringio"
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require_relative "csv/fields_converter"
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require_relative "csv/match_p"
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require_relative "csv/parser"
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require_relative "csv/row"
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require_relative "csv/table"
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require_relative "csv/writer"
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using CSV::MatchP if CSV.const_defined?(:MatchP)
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# This class provides a complete interface to CSV files and data. It offers
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# tools to enable you to read and write to and from Strings or IO objects, as
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# needed.
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#
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# All examples here assume prior execution of:
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# require 'csv'
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#
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# The most generic interface of the library is:
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#
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# csv = CSV.new(io, **options)
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#
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# # Reading: IO object should be open for read
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# csv.read # => array of rows
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# # or
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# csv.each do |row|
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# # ...
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# end
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# # or
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# row = csv.shift
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#
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# # Writing: IO object should be open for write
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# csv << row
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#
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# There are several specialized class methods for one-statement reading or writing,
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# described in the Specialized Methods section.
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#
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# If a String is passed into ::new, it is internally wrapped into a StringIO object.
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#
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# +options+ can be used for specifying the particular CSV flavor (column
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# separators, row separators, value quoting and so on), and for data conversion,
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# see Data Conversion section for the description of the latter.
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#
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# == Specialized Methods
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#
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# === Reading
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#
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# # From a file: all at once
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# arr_of_rows = CSV.read("path/to/file.csv", **options)
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# # iterator-style:
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# CSV.foreach("path/to/file.csv", **options) do |row|
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# # ...
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# end
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#
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# # From a string
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# arr_of_rows = CSV.parse("CSV,data,String", **options)
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# # or
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# CSV.parse("CSV,data,String", **options) do |row|
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# # ...
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# end
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#
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# === Writing
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#
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# # To a file
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* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
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# CSV.open("path/to/file.csv", "wb") do |csv|
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# csv << ["row", "of", "CSV", "data"]
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# csv << ["another", "row"]
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# # ...
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# end
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#
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# # To a String
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# csv_string = CSV.generate do |csv|
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# csv << ["row", "of", "CSV", "data"]
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# csv << ["another", "row"]
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# # ...
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# end
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#
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# === Shortcuts
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#
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# # Core extensions for converting one line
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# csv_string = ["CSV", "data"].to_csv # to CSV
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# csv_array = "CSV,String".parse_csv # from CSV
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#
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# # CSV() method
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# CSV { |csv_out| csv_out << %w{my data here} } # to $stdout
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# CSV(csv = "") { |csv_str| csv_str << %w{my data here} } # to a String
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# CSV($stderr) { |csv_err| csv_err << %w{my data here} } # to $stderr
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# CSV($stdin) { |csv_in| csv_in.each { |row| p row } } # from $stdin
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#
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# == Options
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#
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# The default values for options are:
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# DEFAULT_OPTIONS = {
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# # For both parsing and generating.
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# col_sep: ",",
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# row_sep: :auto,
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# quote_char: '"',
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# # For parsing.
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# field_size_limit: nil,
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# converters: nil,
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# unconverted_fields: nil,
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# headers: false,
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# return_headers: false,
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# header_converters: nil,
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# skip_blanks: false,
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# skip_lines: nil,
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# liberal_parsing: false,
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# nil_value: nil,
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# empty_value: "",
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# # For generating.
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# write_headers: nil,
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# quote_empty: true,
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# force_quotes: false,
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# write_converters: nil,
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# write_nil_value: nil,
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# write_empty_value: "",
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# strip: false,
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# }
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#
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# === Options for Parsing
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#
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# :include: ../doc/col_sep.rdoc
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#
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# :include: ../doc/row_sep.rdoc
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#
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# :include: ../doc/quote_char.rdoc
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#
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# :include: ../doc/field_size_limit.rdoc
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#
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# :include: ../doc/converters.rdoc
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#
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# :include: ../doc/unconverted_fields.rdoc
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#
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# :include: ../doc/headers.rdoc
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#
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# :include: ../doc/return_headers.rdoc
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#
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# :include: ../doc/header_converters.rdoc
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#
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# :include: ../doc/skip_blanks.rdoc
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#
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# :include: ../doc/skip_lines.rdoc
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#
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# :include: ../doc/liberal_parsing.rdoc
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#
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# :include: ../doc/nil_value.rdoc
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#
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# :include: ../doc/empty_value.rdoc
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#
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# === Options for Generating
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#
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# :include: ../doc/col_sep.rdoc
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#
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# :include: ../doc/row_sep.rdoc
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#
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# :include: ../doc/quote_char.rdoc
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#
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# :include: ../doc/write_headers.rdoc
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#
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# :include: ../doc/force_quotes.rdoc
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#
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# :include: ../doc/quote_empty.rdoc
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#
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# :include: ../doc/write_converters.rdoc
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#
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# :include: ../doc/write_nil_value.rdoc
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#
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# :include: ../doc/write_empty_value.rdoc
|
|
|
|
#
|
|
|
|
# :include: ../doc/strip.rdoc
|
|
|
|
#
|
|
|
|
# == CSV with headers
|
2018-05-09 00:39:16 -04:00
|
|
|
#
|
|
|
|
# CSV allows to specify column names of CSV file, whether they are in data, or
|
2019-10-12 01:03:21 -04:00
|
|
|
# provided separately. If headers are specified, reading methods return an instance
|
2018-05-09 00:39:16 -04:00
|
|
|
# of CSV::Table, consisting of CSV::Row.
|
|
|
|
#
|
|
|
|
# # Headers are part of data
|
|
|
|
# data = CSV.parse(<<~ROWS, headers: true)
|
|
|
|
# Name,Department,Salary
|
2018-12-23 02:00:35 -05:00
|
|
|
# Bob,Engineering,1000
|
2018-05-09 00:39:16 -04:00
|
|
|
# Jane,Sales,2000
|
|
|
|
# John,Management,5000
|
|
|
|
# ROWS
|
2011-04-26 11:57:04 -04:00
|
|
|
#
|
2018-05-09 00:39:16 -04:00
|
|
|
# data.class #=> CSV::Table
|
2018-12-23 02:00:35 -05:00
|
|
|
# data.first #=> #<CSV::Row "Name":"Bob" "Department":"Engineering" "Salary":"1000">
|
|
|
|
# data.first.to_h #=> {"Name"=>"Bob", "Department"=>"Engineering", "Salary"=>"1000"}
|
2011-04-26 11:57:04 -04:00
|
|
|
#
|
2018-05-09 00:39:16 -04:00
|
|
|
# # Headers provided by developer
|
2019-08-13 02:27:46 -04:00
|
|
|
# data = CSV.parse('Bob,Engineering,1000', headers: %i[name department salary])
|
2018-12-23 02:00:35 -05:00
|
|
|
# data.first #=> #<CSV::Row name:"Bob" department:"Engineering" salary:"1000">
|
2018-05-09 00:39:16 -04:00
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# == \CSV \Converters
|
|
|
|
#
|
|
|
|
# By default, each field parsed by \CSV is formed into a \String.
|
|
|
|
# You can use a _converter_ to convert certain fields into other Ruby objects.
|
|
|
|
#
|
|
|
|
# When you specify a converter for parsing,
|
|
|
|
# each parsed field is passed to the converter;
|
|
|
|
# its return value becomes the new value for the field.
|
|
|
|
# A converter might, for example, convert an integer embedded in a \String
|
|
|
|
# into a true \Integer.
|
|
|
|
# (In fact, that's what built-in field converter +:integer+ does.)
|
|
|
|
#
|
|
|
|
# There are additional built-in \converters, and custom \converters are also supported.
|
|
|
|
#
|
|
|
|
# All \converters try to transcode fields to UTF-8 before converting.
|
|
|
|
# The conversion will fail if the data cannot be transcoded, leaving the field unchanged.
|
|
|
|
#
|
|
|
|
# === Field \Converters
|
|
|
|
#
|
|
|
|
# There are three ways to use field \converters;
|
|
|
|
# these examples use built-in field converter +:integer+,
|
|
|
|
# which converts each parsed integer string to a true \Integer.
|
|
|
|
#
|
|
|
|
# Option +converters+ with a singleton parsing method:
|
|
|
|
# ary = CSV.parse_line('0,1,2', converters: :integer)
|
|
|
|
# ary # => [0, 1, 2]
|
|
|
|
#
|
|
|
|
# Option +converters+ with a new \CSV instance:
|
|
|
|
# csv = CSV.new('0,1,2', converters: :integer)
|
|
|
|
# # Field converters in effect:
|
|
|
|
# csv.converters # => [:integer]
|
|
|
|
# csv.shift # => [0, 1, 2]
|
|
|
|
#
|
|
|
|
# Method #convert adds a field converter to a \CSV instance:
|
|
|
|
# csv = CSV.new('0,1,2')
|
|
|
|
# # Add a converter.
|
|
|
|
# csv.convert(:integer)
|
|
|
|
# csv.converters # => [:integer]
|
|
|
|
# csv.shift # => [0, 1, 2]
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# The built-in field \converters are in \Hash CSV::Converters.
|
|
|
|
# The \Symbol keys there are the names of the \converters:
|
|
|
|
#
|
|
|
|
# CSV::Converters.keys # => [:integer, :float, :numeric, :date, :date_time, :all]
|
|
|
|
#
|
|
|
|
# Converter +:integer+ converts each field that +Integer()+ accepts:
|
|
|
|
# data = '0,1,2,x'
|
|
|
|
# # Without the converter
|
|
|
|
# csv = CSV.parse_line(data)
|
|
|
|
# csv # => ["0", "1", "2", "x"]
|
|
|
|
# # With the converter
|
|
|
|
# csv = CSV.parse_line(data, converters: :integer)
|
|
|
|
# csv # => [0, 1, 2, "x"]
|
|
|
|
#
|
|
|
|
# Converter +:float+ converts each field that +Float()+ accepts:
|
|
|
|
# data = '1.0,3.14159,x'
|
|
|
|
# # Without the converter
|
|
|
|
# csv = CSV.parse_line(data)
|
|
|
|
# csv # => ["1.0", "3.14159", "x"]
|
|
|
|
# # With the converter
|
|
|
|
# csv = CSV.parse_line(data, converters: :float)
|
|
|
|
# csv # => [1.0, 3.14159, "x"]
|
2018-05-09 00:39:16 -04:00
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# Converter +:numeric+ converts with both +:integer+ and +:float+..
|
2018-05-09 00:39:16 -04:00
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# Converter +:date+ converts each field that +Date::parse()+ accepts:
|
|
|
|
# data = '2001-02-03,x'
|
|
|
|
# # Without the converter
|
|
|
|
# csv = CSV.parse_line(data)
|
|
|
|
# csv # => ["2001-02-03", "x"]
|
|
|
|
# # With the converter
|
|
|
|
# csv = CSV.parse_line(data, converters: :date)
|
|
|
|
# csv # => [#<Date: 2001-02-03 ((2451944j,0s,0n),+0s,2299161j)>, "x"]
|
2018-05-09 00:39:16 -04:00
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# Converter +:date_time+ converts each field that +DateTime::parse() accepts:
|
|
|
|
# data = '2020-05-07T14:59:00-05:00,x'
|
|
|
|
# # Without the converter
|
|
|
|
# csv = CSV.parse_line(data)
|
|
|
|
# csv # => ["2020-05-07T14:59:00-05:00", "x"]
|
|
|
|
# # With the converter
|
|
|
|
# csv = CSV.parse_line(data, converters: :date_time)
|
|
|
|
# csv # => [#<DateTime: 2020-05-07T14:59:00-05:00 ((2458977j,71940s,0n),-18000s,2299161j)>, "x"]
|
2018-05-09 00:39:16 -04:00
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# Converter +:numeric+ converts with both +:date_time+ and +:numeric+..
|
|
|
|
#
|
|
|
|
# As seen above, method #convert adds \converters to a \CSV instance,
|
|
|
|
# and method #converters returns an \Array of the \converters in effect:
|
|
|
|
# csv = CSV.new('0,1,2')
|
|
|
|
# csv.converters # => []
|
|
|
|
# csv.convert(:integer)
|
|
|
|
# csv.converters # => [:integer]
|
|
|
|
# csv.convert(:date)
|
|
|
|
# csv.converters # => [:integer, :date]
|
|
|
|
#
|
|
|
|
# You can add a custom field converter to \Hash CSV::Converters:
|
|
|
|
# strip_converter = proc {|field| field.strip}
|
|
|
|
# CSV::Converters[:strip] = strip_converter
|
|
|
|
# CSV::Converters.keys # => [:integer, :float, :numeric, :date, :date_time, :all, :strip]
|
|
|
|
#
|
|
|
|
# Then use it to convert fields:
|
|
|
|
# str = ' foo , 0 '
|
|
|
|
# ary = CSV.parse_line(str, converters: :strip)
|
|
|
|
# ary # => ["foo", "0"]
|
|
|
|
#
|
|
|
|
# See {Custom Converters}[#class-CSV-label-Custom+Converters].
|
|
|
|
#
|
|
|
|
# === Header \Converters
|
|
|
|
#
|
|
|
|
# Header converters operate only on headers (and not on other rows).
|
|
|
|
#
|
|
|
|
# There are three ways to use header \converters;
|
|
|
|
# these examples use built-in header converter +:dowhcase+,
|
|
|
|
# which downcases each parsed header.
|
|
|
|
#
|
|
|
|
# Option +header_converters+ with a singleton parsing method:
|
|
|
|
# str = "Name,Count\nFoo,0\n,Bar,1\nBaz,2"
|
|
|
|
# tbl = CSV.parse(str, headers: true, header_converters: :downcase)
|
|
|
|
# tbl.class # => CSV::Table
|
|
|
|
# tbl.headers # => ["name", "count"]
|
|
|
|
#
|
|
|
|
# Option +header_converters+ with a new \CSV instance:
|
|
|
|
# csv = CSV.new(str, header_converters: :downcase)
|
|
|
|
# # Header converters in effect:
|
|
|
|
# csv.header_converters # => [:downcase]
|
|
|
|
# tbl = CSV.parse(str, headers: true)
|
|
|
|
# tbl.headers # => ["Name", "Count"]
|
|
|
|
#
|
|
|
|
# Method #header_convert adds a header converter to a \CSV instance:
|
|
|
|
# csv = CSV.new(str)
|
|
|
|
# # Add a header converter.
|
|
|
|
# csv.header_convert(:downcase)
|
|
|
|
# csv.header_converters # => [:downcase]
|
|
|
|
# tbl = CSV.parse(str, headers: true)
|
|
|
|
# tbl.headers # => ["Name", "Count"]
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# The built-in header \converters are in \Hash CSV::Converters.
|
|
|
|
# The \Symbol keys there are the names of the \converters:
|
|
|
|
#
|
|
|
|
# CSV::HeaderConverters.keys # => [:downcase, :symbol]
|
|
|
|
#
|
|
|
|
# Converter +:downcase+ converts each header by downcasing it:
|
|
|
|
# str = "Name,Count\nFoo,0\n,Bar,1\nBaz,2"
|
|
|
|
# tbl = CSV.parse(str, headers: true, header_converters: :downcase)
|
|
|
|
# tbl.class # => CSV::Table
|
|
|
|
# tbl.headers # => ["name", "count"]
|
|
|
|
#
|
|
|
|
# Converter +:symbol+ by making it into a \Symbol:
|
|
|
|
# str = "Name,Count\nFoo,0\n,Bar,1\nBaz,2"
|
|
|
|
# tbl = CSV.parse(str, headers: true, header_converters: :symbol)
|
|
|
|
# tbl.headers # => [:name, :count]
|
|
|
|
# Details:
|
|
|
|
# - Strips leading and trailing whitespace.
|
|
|
|
# - Downcases the header.
|
|
|
|
# - Replaces embedded spaces with underscores.
|
|
|
|
# - Removes non-word characters.
|
|
|
|
# - Makes the string into a \Symbol.
|
|
|
|
#
|
|
|
|
# You can add a custom header converter to \Hash CSV::HeaderConverters:
|
|
|
|
# strip_converter = proc {|field| field.strip}
|
|
|
|
# CSV::HeaderConverters[:strip] = strip_converter
|
|
|
|
# CSV::HeaderConverters.keys # => [:downcase, :symbol, :strip]
|
|
|
|
#
|
|
|
|
# Then use it to convert headers:
|
|
|
|
# str = " Name , Value \nfoo,0\nbar,1\nbaz,2"
|
|
|
|
# tbl = CSV.parse(str, headers: true, header_converters: :strip)
|
|
|
|
# tbl.headers # => ["Name", "Value"]
|
|
|
|
#
|
|
|
|
# See {Custom Converters}[#class-CSV-label-Custom+Converters].
|
|
|
|
#
|
|
|
|
# === Custom \Converters
|
|
|
|
#
|
|
|
|
# You can define custom \converters.
|
|
|
|
#
|
|
|
|
# The \converter is a \Proc that is called with two arguments,
|
|
|
|
# \String +field+ and CSV::FieldInfo +field_info+;
|
|
|
|
# it returns a \String that will become the field value:
|
|
|
|
# converter = proc {|field, field_info| <some_string> }
|
|
|
|
#
|
|
|
|
# To illustrate:
|
|
|
|
# converter = proc {|field, field_info| p [field, field_info]; field}
|
|
|
|
# ary = CSV.parse_line('foo,0', converters: converter)
|
|
|
|
#
|
|
|
|
# Produces:
|
|
|
|
# ["foo", #<struct CSV::FieldInfo index=0, line=1, header=nil>]
|
|
|
|
# ["0", #<struct CSV::FieldInfo index=1, line=1, header=nil>]
|
|
|
|
#
|
|
|
|
# In each of the output lines:
|
|
|
|
# - The first \Array element is the passed \String field.
|
|
|
|
# - The second is a \FieldInfo structure containing information about the field:
|
|
|
|
# - The 0-based column index.
|
|
|
|
# - The 1-based line number.
|
|
|
|
# - The header for the column, if available.
|
|
|
|
#
|
|
|
|
# If the \converter does not need +field_info+, it can be omitted:
|
|
|
|
# converter = proc {|field| ... }
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# == CSV and Character Encodings (M17n or Multilingualization)
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# This new CSV parser is m17n savvy. The parser works in the Encoding of the IO
|
2019-10-12 01:03:21 -04:00
|
|
|
# or String object being read from or written to. Your data is never transcoded
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# (unless you ask Ruby to transcode it for you) and will literally be parsed in
|
2019-10-12 01:03:21 -04:00
|
|
|
# the Encoding it is in. Thus CSV will return Arrays or Rows of Strings in the
|
|
|
|
# Encoding of your data. This is accomplished by transcoding the parser itself
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# into your Encoding.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Some transcoding must take place, of course, to accomplish this multiencoding
|
2019-10-12 01:03:21 -04:00
|
|
|
# support. For example, <tt>:col_sep</tt>, <tt>:row_sep</tt>, and
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# <tt>:quote_char</tt> must be transcoded to match your data. Hopefully this
|
|
|
|
# makes the entire process feel transparent, since CSV's defaults should just
|
2019-10-12 01:03:21 -04:00
|
|
|
# magically work for your data. However, you can set these values manually in
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# the target Encoding to avoid the translation.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# It's also important to note that while all of CSV's core parser is now
|
2019-10-12 01:03:21 -04:00
|
|
|
# Encoding agnostic, some features are not. For example, the built-in
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# converters will try to transcode data to UTF-8 before making conversions.
|
|
|
|
# Again, you can provide custom converters that are aware of your Encodings to
|
2019-10-12 01:03:21 -04:00
|
|
|
# avoid this translation. It's just too hard for me to support native
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# conversions in all of Ruby's Encodings.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# Anyway, the practical side of this is simple: make sure IO and String objects
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# passed into CSV have the proper Encoding set and everything should just work.
|
|
|
|
# CSV methods that allow you to open IO objects (CSV::foreach(), CSV::open(),
|
|
|
|
# CSV::read(), and CSV::readlines()) do allow you to specify the Encoding.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# One minor exception comes when generating CSV into a String with an Encoding
|
2019-10-12 01:03:21 -04:00
|
|
|
# that is not ASCII compatible. There's no existing data for CSV to use to
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# prepare itself and thus you will probably need to manually specify the desired
|
2019-10-12 01:03:21 -04:00
|
|
|
# Encoding for most of those cases. It will try to guess using the fields in a
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# row of output though, when using CSV::generate_line() or Array#to_csv().
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# I try to point out any other Encoding issues in the documentation of methods
|
|
|
|
# as they come up.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# This has been tested to the best of my ability with all non-"dummy" Encodings
|
2019-10-12 01:03:21 -04:00
|
|
|
# Ruby ships with. However, it is brave new code and may have some bugs.
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Please feel free to {report}[mailto:james@grayproductions.net] any issues you
|
|
|
|
# find with it.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
class CSV
|
|
|
|
|
2018-05-09 00:39:16 -04:00
|
|
|
# The error thrown when the parser encounters illegal CSV formatting.
|
|
|
|
class MalformedCSVError < RuntimeError
|
|
|
|
attr_reader :line_number
|
|
|
|
alias_method :lineno, :line_number
|
|
|
|
def initialize(message, line_number)
|
|
|
|
@line_number = line_number
|
|
|
|
super("#{message} in line #{line_number}.")
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# A FieldInfo Struct contains details about a field's position in the data
|
|
|
|
# source it was read from. CSV will pass this Struct to some blocks that make
|
|
|
|
# decisions based on field structure. See CSV.convert_fields() for an
|
|
|
|
# example.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# <b><tt>index</tt></b>:: The zero-based index of the field in its row.
|
|
|
|
# <b><tt>line</tt></b>:: The line of the data source this row is from.
|
|
|
|
# <b><tt>header</tt></b>:: The header for the column, when available.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
FieldInfo = Struct.new(:index, :line, :header)
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
# A Regexp used to find and convert some common Date formats.
|
|
|
|
DateMatcher = / \A(?: (\w+,?\s+)?\w+\s+\d{1,2},?\s+\d{2,4} |
|
|
|
|
\d{4}-\d{2}-\d{2} )\z /x
|
|
|
|
# A Regexp used to find and convert some common DateTime formats.
|
|
|
|
DateTimeMatcher =
|
|
|
|
/ \A(?: (\w+,?\s+)?\w+\s+\d{1,2}\s+\d{1,2}:\d{1,2}:\d{1,2},?\s+\d{2,4} |
|
2018-05-09 00:39:16 -04:00
|
|
|
\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2} |
|
|
|
|
# ISO-8601
|
|
|
|
\d{4}-\d{2}-\d{2}
|
|
|
|
(?:T\d{2}:\d{2}(?::\d{2}(?:\.\d+)?(?:[+-]\d{2}(?::\d{2})|Z)?)?)?
|
|
|
|
)\z /x
|
2009-03-05 22:56:38 -05:00
|
|
|
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# The encoding used by all converters.
|
|
|
|
ConverterEncoding = Encoding.find("UTF-8")
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# This Hash holds the built-in converters of CSV that can be accessed by name.
|
|
|
|
# You can select Converters with CSV.convert() or through the +options+ Hash
|
|
|
|
# passed to CSV::new().
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# <b><tt>:integer</tt></b>:: Converts any field Integer() accepts.
|
|
|
|
# <b><tt>:float</tt></b>:: Converts any field Float() accepts.
|
2009-03-05 22:56:38 -05:00
|
|
|
# <b><tt>:numeric</tt></b>:: A combination of <tt>:integer</tt>
|
2007-12-24 21:46:26 -05:00
|
|
|
# and <tt>:float</tt>.
|
|
|
|
# <b><tt>:date</tt></b>:: Converts any field Date::parse() accepts.
|
|
|
|
# <b><tt>:date_time</tt></b>:: Converts any field DateTime::parse() accepts.
|
2009-03-05 22:56:38 -05:00
|
|
|
# <b><tt>:all</tt></b>:: All built-in converters. A combination of
|
2007-12-24 21:46:26 -05:00
|
|
|
# <tt>:date_time</tt> and <tt>:numeric</tt>.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# All built-in converters transcode field data to UTF-8 before attempting a
|
|
|
|
# conversion. If your data cannot be transcoded to UTF-8 the conversion will
|
|
|
|
# fail and the field will remain unchanged.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2008-06-04 05:37:38 -04:00
|
|
|
# This Hash is intentionally left unfrozen and users should feel free to add
|
2007-12-24 21:46:26 -05:00
|
|
|
# values to it that can be accessed by all CSV objects.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# To add a combo field, the value should be an Array of names. Combo fields
|
|
|
|
# can be nested with other combo fields.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2015-12-17 22:55:29 -05:00
|
|
|
Converters = {
|
|
|
|
integer: lambda { |f|
|
|
|
|
Integer(f.encode(ConverterEncoding)) rescue f
|
|
|
|
},
|
|
|
|
float: lambda { |f|
|
|
|
|
Float(f.encode(ConverterEncoding)) rescue f
|
|
|
|
},
|
|
|
|
numeric: [:integer, :float],
|
|
|
|
date: lambda { |f|
|
|
|
|
begin
|
|
|
|
e = f.encode(ConverterEncoding)
|
Improve CSV performance
If it will not use special variables (like $1, $&, $`...),
it can improve the performance by using Regexp#match? or String#match? instead of Regexp#=~ or String#=~.
This patch is same idea as https://github.com/ruby/ruby/pull/1836
[Fix GH-1842]
## Environment
* OS : Ubuntu 17.10
* Compiler : gcc version 7.2.0
* CPU : Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
* Memory : 16 GB
## TL;DR
Methods | Before | After | Speed up
----------- | ------ | ------ | --------
CSV.foreach | 44.825 | 48.201 | 7.5%
CSV#shift | 45.200 | 49.584 | 9.7%
CSV.read | 42.968 | 46.853 | 9.0%
CSV.table | 10.933 | 11.277 | 3.1%
## Before
```
Calculating -------------------------------------
CSV.foreach 44.825 (± 0.0%) i/s - 228.000 in 5.086576s
CSV#shift 45.200 (± 0.0%) i/s - 228.000 in 5.044297s
CSV.read 42.968 (± 0.0%) i/s - 216.000 in 5.027504s
CSV.table 10.933 (± 0.0%) i/s - 55.000 in 5.031098s
```
## After
```
Calculating -------------------------------------
CSV.foreach 48.201 (± 0.0%) i/s - 244.000 in 5.062256s
CSV#shift 49.584 (± 0.0%) i/s - 248.000 in 5.001652s
CSV.read 46.853 (± 0.0%) i/s - 236.000 in 5.037044s
CSV.table 11.277 (± 0.0%) i/s - 57.000 in 5.054694s
```
## Benchmark code
```ruby
require 'csv'
require 'benchmark/ips'
CSV.open("/tmp/file.csv", "w") do |csv|
csv << ["player", "gameA", "gameB"]
1000.times do
csv << ['"Alice"', "84.0", "79.5"]
csv << ['"Bob"', "20.0", "56.5"]
end
end
Benchmark.ips do |x|
x.report "CSV.foreach" do
CSV.foreach("/tmp/file.csv") do |row|
end
end
x.report "CSV#shift" do
CSV.open("/tmp/file.csv") do |csv|
while line = csv.shift
end
end
end
x.report "CSV.read" do
CSV.read("/tmp/file.csv")
end
x.report "CSV.table" do
CSV.table("/tmp/file.csv")
end
end
```
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62806 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-03-18 06:28:58 -04:00
|
|
|
e.match?(DateMatcher) ? Date.parse(e) : f
|
2015-12-17 22:55:29 -05:00
|
|
|
rescue # encoding conversion or date parse errors
|
|
|
|
f
|
|
|
|
end
|
|
|
|
},
|
|
|
|
date_time: lambda { |f|
|
|
|
|
begin
|
|
|
|
e = f.encode(ConverterEncoding)
|
Improve CSV performance
If it will not use special variables (like $1, $&, $`...),
it can improve the performance by using Regexp#match? or String#match? instead of Regexp#=~ or String#=~.
This patch is same idea as https://github.com/ruby/ruby/pull/1836
[Fix GH-1842]
## Environment
* OS : Ubuntu 17.10
* Compiler : gcc version 7.2.0
* CPU : Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
* Memory : 16 GB
## TL;DR
Methods | Before | After | Speed up
----------- | ------ | ------ | --------
CSV.foreach | 44.825 | 48.201 | 7.5%
CSV#shift | 45.200 | 49.584 | 9.7%
CSV.read | 42.968 | 46.853 | 9.0%
CSV.table | 10.933 | 11.277 | 3.1%
## Before
```
Calculating -------------------------------------
CSV.foreach 44.825 (± 0.0%) i/s - 228.000 in 5.086576s
CSV#shift 45.200 (± 0.0%) i/s - 228.000 in 5.044297s
CSV.read 42.968 (± 0.0%) i/s - 216.000 in 5.027504s
CSV.table 10.933 (± 0.0%) i/s - 55.000 in 5.031098s
```
## After
```
Calculating -------------------------------------
CSV.foreach 48.201 (± 0.0%) i/s - 244.000 in 5.062256s
CSV#shift 49.584 (± 0.0%) i/s - 248.000 in 5.001652s
CSV.read 46.853 (± 0.0%) i/s - 236.000 in 5.037044s
CSV.table 11.277 (± 0.0%) i/s - 57.000 in 5.054694s
```
## Benchmark code
```ruby
require 'csv'
require 'benchmark/ips'
CSV.open("/tmp/file.csv", "w") do |csv|
csv << ["player", "gameA", "gameB"]
1000.times do
csv << ['"Alice"', "84.0", "79.5"]
csv << ['"Bob"', "20.0", "56.5"]
end
end
Benchmark.ips do |x|
x.report "CSV.foreach" do
CSV.foreach("/tmp/file.csv") do |row|
end
end
x.report "CSV#shift" do
CSV.open("/tmp/file.csv") do |csv|
while line = csv.shift
end
end
end
x.report "CSV.read" do
CSV.read("/tmp/file.csv")
end
x.report "CSV.table" do
CSV.table("/tmp/file.csv")
end
end
```
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62806 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-03-18 06:28:58 -04:00
|
|
|
e.match?(DateTimeMatcher) ? DateTime.parse(e) : f
|
2015-12-17 22:55:29 -05:00
|
|
|
rescue # encoding conversion or date parse errors
|
|
|
|
f
|
|
|
|
end
|
|
|
|
},
|
|
|
|
all: [:date_time, :numeric],
|
|
|
|
}
|
2007-12-24 21:46:26 -05:00
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# This Hash holds the built-in header converters of CSV that can be accessed
|
2019-10-12 01:03:21 -04:00
|
|
|
# by name. You can select HeaderConverters with CSV.header_convert() or
|
2007-12-24 21:46:26 -05:00
|
|
|
# through the +options+ Hash passed to CSV::new().
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# <b><tt>:downcase</tt></b>:: Calls downcase() on the header String.
|
2016-01-22 21:30:07 -05:00
|
|
|
# <b><tt>:symbol</tt></b>:: Leading/trailing spaces are dropped, string is
|
|
|
|
# downcased, remaining spaces are replaced with
|
|
|
|
# underscores, non-word characters are dropped,
|
|
|
|
# and finally to_sym() is called.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# All built-in header converters transcode header data to UTF-8 before
|
2019-10-12 01:03:21 -04:00
|
|
|
# attempting a conversion. If your data cannot be transcoded to UTF-8 the
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# conversion will fail and the header will remain unchanged.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2013-12-02 00:36:00 -05:00
|
|
|
# This Hash is intentionally left unfrozen and users should feel free to add
|
2007-12-24 21:46:26 -05:00
|
|
|
# values to it that can be accessed by all CSV objects.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# To add a combo field, the value should be an Array of names. Combo fields
|
2007-12-24 21:46:26 -05:00
|
|
|
# can be nested with other combo fields.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
HeaderConverters = {
|
2008-10-10 11:09:34 -04:00
|
|
|
downcase: lambda { |h| h.encode(ConverterEncoding).downcase },
|
|
|
|
symbol: lambda { |h|
|
2017-05-20 21:01:10 -04:00
|
|
|
h.encode(ConverterEncoding).downcase.gsub(/[^\s\w]+/, "").strip.
|
2017-05-16 05:32:32 -04:00
|
|
|
gsub(/\s+/, "_").to_sym
|
2007-12-24 21:46:26 -05:00
|
|
|
}
|
|
|
|
}
|
2020-05-12 17:42:45 -04:00
|
|
|
# Default values for method options.
|
2015-12-17 22:55:29 -05:00
|
|
|
DEFAULT_OPTIONS = {
|
2020-05-12 17:42:45 -04:00
|
|
|
# For both parsing and generating.
|
2015-12-17 22:55:29 -05:00
|
|
|
col_sep: ",",
|
|
|
|
row_sep: :auto,
|
|
|
|
quote_char: '"',
|
2020-05-12 17:42:45 -04:00
|
|
|
# For parsing.
|
2015-12-17 22:55:29 -05:00
|
|
|
field_size_limit: nil,
|
|
|
|
converters: nil,
|
|
|
|
unconverted_fields: nil,
|
|
|
|
headers: false,
|
|
|
|
return_headers: false,
|
|
|
|
header_converters: nil,
|
|
|
|
skip_blanks: false,
|
|
|
|
skip_lines: nil,
|
2015-12-31 21:44:48 -05:00
|
|
|
liberal_parsing: false,
|
2020-05-12 17:42:45 -04:00
|
|
|
nil_value: nil,
|
|
|
|
empty_value: "",
|
|
|
|
# For generating.
|
|
|
|
write_headers: nil,
|
2019-01-25 01:49:59 -05:00
|
|
|
quote_empty: true,
|
2020-05-12 17:42:45 -04:00
|
|
|
force_quotes: false,
|
|
|
|
write_converters: nil,
|
|
|
|
write_nil_value: nil,
|
|
|
|
write_empty_value: "",
|
|
|
|
strip: false,
|
2015-12-17 22:55:29 -05:00
|
|
|
}.freeze
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
class << self
|
|
|
|
#
|
|
|
|
# This method will return a CSV instance, just like CSV::new(), but the
|
|
|
|
# instance will be cached and returned for all future calls to this method for
|
|
|
|
# the same +data+ object (tested by Object#object_id()) with the same
|
|
|
|
# +options+.
|
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing]
|
|
|
|
# and {Options for Generating}[#class-CSV-label-Options+for+Generating].
|
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# If a block is given, the instance is passed to the block and the return
|
|
|
|
# value becomes the return value of the block.
|
|
|
|
#
|
|
|
|
def instance(data = $stdout, **options)
|
|
|
|
# create a _signature_ for this method call, data object and options
|
|
|
|
sig = [data.object_id] +
|
|
|
|
options.values_at(*DEFAULT_OPTIONS.keys.sort_by { |sym| sym.to_s })
|
|
|
|
|
|
|
|
# fetch or create the instance for this signature
|
|
|
|
@@instances ||= Hash.new
|
|
|
|
instance = (@@instances[sig] ||= new(data, **options))
|
|
|
|
|
|
|
|
if block_given?
|
|
|
|
yield instance # run block, if given, returning result
|
|
|
|
else
|
|
|
|
instance # or return the instance
|
|
|
|
end
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# :call-seq:
|
|
|
|
# filter( **options ) { |row| ... }
|
|
|
|
# filter( input, **options ) { |row| ... }
|
|
|
|
# filter( input, output, **options ) { |row| ... }
|
|
|
|
#
|
|
|
|
# This method is a convenience for building Unix-like filters for CSV data.
|
|
|
|
# Each row is yielded to the provided block which can alter it as needed.
|
|
|
|
# After the block returns, the row is appended to +output+ altered or not.
|
|
|
|
#
|
|
|
|
# The +input+ and +output+ arguments can be anything CSV::new() accepts
|
|
|
|
# (generally String or IO objects). If not given, they default to
|
|
|
|
# <tt>ARGF</tt> and <tt>$stdout</tt>.
|
|
|
|
#
|
|
|
|
# The +options+ parameter is also filtered down to CSV::new() after some
|
|
|
|
# clever key parsing. Any key beginning with <tt>:in_</tt> or
|
|
|
|
# <tt>:input_</tt> will have that leading identifier stripped and will only
|
|
|
|
# be used in the +options+ Hash for the +input+ object. Keys starting with
|
|
|
|
# <tt>:out_</tt> or <tt>:output_</tt> affect only +output+. All other keys
|
|
|
|
# are assigned to both objects.
|
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing]
|
|
|
|
# and {Options for Generating}[#class-CSV-label-Options+for+Generating].
|
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# The <tt>:output_row_sep</tt> +option+ defaults to
|
|
|
|
# <tt>$INPUT_RECORD_SEPARATOR</tt> (<tt>$/</tt>).
|
|
|
|
#
|
|
|
|
def filter(input=nil, output=nil, **options)
|
|
|
|
# parse options for input, output, or both
|
|
|
|
in_options, out_options = Hash.new, {row_sep: $INPUT_RECORD_SEPARATOR}
|
|
|
|
options.each do |key, value|
|
|
|
|
case key.to_s
|
|
|
|
when /\Ain(?:put)?_(.+)\Z/
|
|
|
|
in_options[$1.to_sym] = value
|
|
|
|
when /\Aout(?:put)?_(.+)\Z/
|
|
|
|
out_options[$1.to_sym] = value
|
|
|
|
else
|
|
|
|
in_options[key] = value
|
|
|
|
out_options[key] = value
|
|
|
|
end
|
|
|
|
end
|
|
|
|
# build input and output wrappers
|
|
|
|
input = new(input || ARGF, **in_options)
|
|
|
|
output = new(output || $stdout, **out_options)
|
|
|
|
|
|
|
|
# read, yield, write
|
|
|
|
input.each do |row|
|
|
|
|
yield row
|
|
|
|
output << row
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
end
|
2019-10-12 01:03:21 -04:00
|
|
|
|
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# :call-seq:
|
|
|
|
# foreach(path, mode='r', **options) {|row| ... ) -> integer or nil
|
|
|
|
# foreach(io, mode='r', **options {|row| ... ) -> integer or nil
|
|
|
|
# foreach(path, mode='r', **options) -> new_enumerator
|
|
|
|
# foreach(io, mode='r', **options -> new_enumerator
|
|
|
|
#
|
|
|
|
# Calls the block with each row read from source +path+ or +io+.
|
|
|
|
# Returns an integer, or, if there were no rows, +nil+.
|
|
|
|
#
|
|
|
|
# * Argument +path+, if given, must be the path to a file.
|
|
|
|
# * Argument +io+, if given, must be an \IO object opened for reading.
|
|
|
|
# * Argument +mode+, if given, must be a \File mode
|
|
|
|
# See {Open Mode}[IO.html#method-c-new-label-Open+Mode].
|
|
|
|
# * Arguments <tt>**options</tt> must be keyword options.
|
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
|
|
|
# * This method optionally accepts an additional <tt>:encoding</tt> option
|
|
|
|
# that you can use to specify the Encoding of the data read from +path+ or +io+.
|
|
|
|
# You must provide this unless your data is in the encoding
|
|
|
|
# given by <tt>Encoding::default_external</tt>.
|
|
|
|
# Parsing will use this to determine how to parse the data.
|
|
|
|
# You may provide a second Encoding to
|
|
|
|
# have the data transcoded as it is read. For example,
|
|
|
|
# encoding: 'UTF-32BE:UTF-8'
|
|
|
|
# would read +UTF-32BE+ data from the file
|
|
|
|
# but transcode it to +UTF-8+ before parsing.
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# These examples assume prior execution of:
|
|
|
|
# string = "foo,0\nbar,1\nbaz,2\n"
|
|
|
|
# path = 't.csv'
|
|
|
|
# File.write(path, string)
|
|
|
|
# io = File.open(path)
|
|
|
|
#
|
|
|
|
# Read rows from a file at +path+:
|
|
|
|
# CSV.foreach(path) {|row| p row } # => 21
|
|
|
|
# Output:
|
|
|
|
# ["foo", "0"]
|
|
|
|
# ["bar", "1"]
|
|
|
|
# ["baz", "2"]
|
|
|
|
#
|
|
|
|
# Read rows from an \IO object:
|
|
|
|
# CSV.foreach(io) {|row| p row } # => 21
|
|
|
|
# Output:
|
|
|
|
# ["foo", "0"]
|
|
|
|
# ["bar", "1"]
|
|
|
|
# ["baz", "2"]
|
|
|
|
#
|
|
|
|
# Returns a new \Enumerator if no block given:
|
|
|
|
# CSV.foreach(path) # => #<Enumerator: CSV:foreach("t.csv", "r")>
|
|
|
|
# CSV.foreach(io) # => #<Enumerator: CSV:foreach(#<File:t.csv>, "r")>
|
|
|
|
#
|
|
|
|
# Issues a warning if an encoding is unsupported:
|
|
|
|
# CSV.foreach(io, encoding: 'foo:bar') {|row| } # => 21
|
|
|
|
# Output:
|
|
|
|
# warning: Unsupported encoding foo ignored
|
|
|
|
# warning: Unsupported encoding bar ignored
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# Raises an exception if +path+ is a \String, but not the path to a readable file:
|
|
|
|
# # Raises Errno::ENOENT (No such file or directory @ rb_sysopen - nosuch.csv):
|
|
|
|
# CSV.foreach('nosuch.csv') {|row| }
|
|
|
|
#
|
|
|
|
# Raises an exception if +io+ is an \IO object, but not open for reading:
|
|
|
|
# io = File.open(path, 'w') {|row| }
|
|
|
|
# # Raises TypeError (no implicit conversion of nil into String):
|
|
|
|
# CSV.foreach(io) {|row| }
|
2020-05-12 17:42:45 -04:00
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# Raises an exception if +mode+ is invalid:
|
|
|
|
# # Raises IOError (not opened for reading):
|
|
|
|
# CSV.foreach(path, 'w') {|row| }
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
def foreach(path, mode="r", **options, &block)
|
|
|
|
return to_enum(__method__, path, mode, **options) unless block_given?
|
|
|
|
open(path, mode, **options) do |csv|
|
|
|
|
csv.each(&block)
|
|
|
|
end
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# :call-seq:
|
2020-05-26 17:13:05 -04:00
|
|
|
# generate(csv_string, **options) {|csv| ... }
|
|
|
|
# generate(**options) {|csv| ... }
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# * Argument +csv_string+, if given, must be a \String object;
|
|
|
|
# defaults to a new empty \String.
|
|
|
|
# * Arguments +options+, if given, should be parsing options.
|
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# Creates a new \CSV object via <tt>CSV.new(csv_string, **options)</tt>;
|
|
|
|
# calls the block with the \CSV object, which the block may modify;
|
|
|
|
# returns the \String generated from the \CSV object.
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# Note that a passed \String *is* modified by this method.
|
|
|
|
# Pass <tt>csv_string</tt>.dup if the \String must be preserved.
|
2020-05-12 17:42:45 -04:00
|
|
|
#
|
|
|
|
# This method has one additional option: <tt>:encoding</tt>,
|
|
|
|
# which sets the base Encoding for the output if no no +str+ is specified.
|
|
|
|
# CSV needs this hint if you plan to output non-ASCII compatible data.
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# Add lines:
|
|
|
|
# input_string = "foo,0\nbar,1\nbaz,2\n"
|
|
|
|
# output_string = CSV.generate(input_string) do |csv|
|
|
|
|
# csv << ['bat', 3]
|
|
|
|
# csv << ['bam', 4]
|
|
|
|
# end
|
|
|
|
# output_string # => "foo,0\nbar,1\nbaz,2\nbat,3\nbam,4\n"
|
|
|
|
# input_string # => "foo,0\nbar,1\nbaz,2\nbat,3\nbam,4\n"
|
|
|
|
# output_string.equal?(input_string) # => true # Same string, modified
|
|
|
|
#
|
|
|
|
# Add lines into new string, preserving old string:
|
|
|
|
# input_string = "foo,0\nbar,1\nbaz,2\n"
|
|
|
|
# output_string = CSV.generate(input_string.dup) do |csv|
|
|
|
|
# csv << ['bat', 3]
|
|
|
|
# csv << ['bam', 4]
|
|
|
|
# end
|
|
|
|
# output_string # => "foo,0\nbar,1\nbaz,2\nbat,3\nbam,4\n"
|
|
|
|
# input_string # => "foo,0\nbar,1\nbaz,2\n"
|
|
|
|
# output_string.equal?(input_string) # => false # Different strings
|
|
|
|
#
|
|
|
|
# Create lines from nothing:
|
|
|
|
# output_string = CSV.generate do |csv|
|
|
|
|
# csv << ['foo', 0]
|
|
|
|
# csv << ['bar', 1]
|
|
|
|
# csv << ['baz', 2]
|
|
|
|
# end
|
|
|
|
# output_string # => "foo,0\nbar,1\nbaz,2\n"
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# Raises an exception if +csv_string+ is not a \String object:
|
|
|
|
# # Raises TypeError (no implicit conversion of Integer into String)
|
|
|
|
# CSV.generate(0)
|
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
def generate(str=nil, **options)
|
2019-11-24 20:06:59 -05:00
|
|
|
encoding = options[:encoding]
|
2019-10-12 01:03:21 -04:00
|
|
|
# add a default empty String, if none was given
|
|
|
|
if str
|
|
|
|
str = StringIO.new(str)
|
|
|
|
str.seek(0, IO::SEEK_END)
|
2019-11-24 20:06:59 -05:00
|
|
|
str.set_encoding(encoding) if encoding
|
2019-10-12 01:03:21 -04:00
|
|
|
else
|
|
|
|
str = +""
|
|
|
|
str.force_encoding(encoding) if encoding
|
|
|
|
end
|
|
|
|
csv = new(str, **options) # wrap
|
|
|
|
yield csv # yield for appending
|
|
|
|
csv.string # return final String
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
|
2020-05-17 17:01:57 -04:00
|
|
|
# :call-seq:
|
|
|
|
# CSV.generate_line(ary)
|
|
|
|
# CSV.generate_line(ary, **options)
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Returns the \String created by generating \CSV from +ary+
|
|
|
|
# using the specified +options+.
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Argument +ary+ must be an \Array.
|
|
|
|
#
|
|
|
|
# Special options:
|
|
|
|
# * Option <tt>:row_sep</tt> defaults to <tt>$INPUT_RECORD_SEPARATOR</tt>
|
|
|
|
# (<tt>$/</tt>).:
|
|
|
|
# $INPUT_RECORD_SEPARATOR # => "\n"
|
|
|
|
# * This method accepts an additional option, <tt>:encoding</tt>, which sets the base
|
|
|
|
# Encoding for the output. This method will try to guess your Encoding from
|
|
|
|
# the first non-+nil+ field in +row+, if possible, but you may need to use
|
|
|
|
# this parameter as a backup plan.
|
|
|
|
#
|
|
|
|
# For other +options+,
|
|
|
|
# see {Options for Generating}[#class-CSV-label-Options+for+Generating].
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# Returns the \String generated from an \Array:
|
|
|
|
# CSV.generate_line(['foo', '0']) # => "foo,0\n"
|
2020-05-12 17:42:45 -04:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# ---
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Raises an exception if +ary+ is not an \Array:
|
|
|
|
# # Raises NoMethodError (undefined method `find' for :foo:Symbol)
|
|
|
|
# CSV.generate_line(:foo)
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
def generate_line(row, **options)
|
|
|
|
options = {row_sep: $INPUT_RECORD_SEPARATOR}.merge(options)
|
2019-01-25 01:49:59 -05:00
|
|
|
str = +""
|
2019-10-12 01:03:21 -04:00
|
|
|
if options[:encoding]
|
|
|
|
str.force_encoding(options[:encoding])
|
|
|
|
elsif field = row.find {|f| f.is_a?(String)}
|
|
|
|
str.force_encoding(field.encoding)
|
|
|
|
end
|
|
|
|
(new(str, **options) << row).string
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# :call-seq:
|
|
|
|
# open( filename, mode = "rb", **options ) { |faster_csv| ... }
|
|
|
|
# open( filename, **options ) { |faster_csv| ... }
|
|
|
|
# open( filename, mode = "rb", **options )
|
|
|
|
# open( filename, **options )
|
|
|
|
#
|
|
|
|
# This method opens an IO object, and wraps that with CSV. This is intended
|
|
|
|
# as the primary interface for writing a CSV file.
|
|
|
|
#
|
|
|
|
# You must pass a +filename+ and may optionally add a +mode+ for Ruby's
|
2020-05-12 17:42:45 -04:00
|
|
|
# open().
|
|
|
|
#
|
2020-05-26 17:13:05 -04:00
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# This method works like Ruby's open() call, in that it will pass a CSV object
|
|
|
|
# to a provided block and close it when the block terminates, or it will
|
|
|
|
# return the CSV object when no block is provided. (*Note*: This is different
|
|
|
|
# from the Ruby 1.8 CSV library which passed rows to the block. Use
|
|
|
|
# CSV::foreach() for that behavior.)
|
|
|
|
#
|
|
|
|
# You must provide a +mode+ with an embedded Encoding designator unless your
|
|
|
|
# data is in Encoding::default_external(). CSV will check the Encoding of the
|
|
|
|
# underlying IO object (set by the +mode+ you pass) to determine how to parse
|
|
|
|
# the data. You may provide a second Encoding to have the data transcoded as
|
|
|
|
# it is read just as you can with a normal call to IO::open(). For example,
|
|
|
|
# <tt>"rb:UTF-32BE:UTF-8"</tt> would read UTF-32BE data from the file but
|
|
|
|
# transcode it to UTF-8 before CSV parses it.
|
|
|
|
#
|
|
|
|
# An opened CSV object will delegate to many IO methods for convenience. You
|
|
|
|
# may call:
|
|
|
|
#
|
|
|
|
# * binmode()
|
|
|
|
# * binmode?()
|
|
|
|
# * close()
|
|
|
|
# * close_read()
|
|
|
|
# * close_write()
|
|
|
|
# * closed?()
|
|
|
|
# * eof()
|
|
|
|
# * eof?()
|
|
|
|
# * external_encoding()
|
|
|
|
# * fcntl()
|
|
|
|
# * fileno()
|
|
|
|
# * flock()
|
|
|
|
# * flush()
|
|
|
|
# * fsync()
|
|
|
|
# * internal_encoding()
|
|
|
|
# * ioctl()
|
|
|
|
# * isatty()
|
|
|
|
# * path()
|
|
|
|
# * pid()
|
|
|
|
# * pos()
|
|
|
|
# * pos=()
|
|
|
|
# * reopen()
|
|
|
|
# * seek()
|
|
|
|
# * stat()
|
|
|
|
# * sync()
|
|
|
|
# * sync=()
|
|
|
|
# * tell()
|
|
|
|
# * to_i()
|
|
|
|
# * to_io()
|
|
|
|
# * truncate()
|
|
|
|
# * tty?()
|
|
|
|
#
|
|
|
|
def open(filename, mode="r", **options)
|
|
|
|
# wrap a File opened with the remaining +args+ with no newline
|
|
|
|
# decorator
|
|
|
|
file_opts = {universal_newline: false}.merge(options)
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
begin
|
|
|
|
f = File.open(filename, mode, **file_opts)
|
|
|
|
rescue ArgumentError => e
|
|
|
|
raise unless /needs binmode/.match?(e.message) and mode == "r"
|
|
|
|
mode = "rb"
|
|
|
|
file_opts = {encoding: Encoding.default_external}.merge(file_opts)
|
|
|
|
retry
|
|
|
|
end
|
|
|
|
begin
|
|
|
|
csv = new(f, **options)
|
|
|
|
rescue Exception
|
|
|
|
f.close
|
|
|
|
raise
|
|
|
|
end
|
2017-07-28 03:46:20 -04:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
# handle blocks like Ruby's open(), not like the CSV library
|
|
|
|
if block_given?
|
|
|
|
begin
|
|
|
|
yield csv
|
|
|
|
ensure
|
|
|
|
csv.close
|
|
|
|
end
|
|
|
|
else
|
|
|
|
csv
|
|
|
|
end
|
2014-05-29 06:44:59 -04:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# :call-seq:
|
|
|
|
# parse( str, **options ) { |row| ... }
|
|
|
|
# parse( str, **options )
|
|
|
|
#
|
|
|
|
# This method can be used to easily parse CSV out of a String. You may either
|
|
|
|
# provide a +block+ which will be called with each row of the String in turn,
|
|
|
|
# or just use the returned Array of Arrays (when no +block+ is given).
|
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# You pass your +str+ to read from, and an optional +options+.
|
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
def parse(str, **options, &block)
|
|
|
|
csv = new(str, **options)
|
|
|
|
|
|
|
|
return csv.each(&block) if block_given?
|
|
|
|
|
|
|
|
# slurp contents, if no block is given
|
2007-12-24 21:46:26 -05:00
|
|
|
begin
|
2019-10-12 01:03:21 -04:00
|
|
|
csv.read
|
2007-12-24 21:46:26 -05:00
|
|
|
ensure
|
2017-08-29 06:22:47 -04:00
|
|
|
csv.close
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
end
|
2018-05-09 00:39:16 -04:00
|
|
|
|
2020-05-17 17:01:57 -04:00
|
|
|
# :call-seq:
|
|
|
|
# CSV.parse_line(string)
|
|
|
|
# CSV.parse_line(io)
|
|
|
|
# CSV.parse_line(string, **options)
|
|
|
|
# CSV.parse_line(io, **options)
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Returns the new \Array created by parsing the first line of +string+ or +io+
|
|
|
|
# using the specified +options+.
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Argument +string+ should be a \String object;
|
|
|
|
# it will be put into a new \StringIO object positioned at the beginning.
|
|
|
|
#
|
|
|
|
# Argument +io+ should be an \IO object; it will be positioned at the beginning.
|
|
|
|
#
|
|
|
|
# For +options+, see {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
# Returns data from the first line from a String object:
|
|
|
|
# CSV.parse_line('foo,0') # => ["foo", "0"]
|
|
|
|
#
|
|
|
|
# Returns data from the first line from a File object:
|
|
|
|
# File.write('t.csv', 'foo,0')
|
|
|
|
# CSV.parse_line(File.open('t.csv')) # => ["foo", "0"]
|
|
|
|
#
|
|
|
|
# Ignores lines after the first:
|
|
|
|
# CSV.parse_line("foo,0\nbar,1\nbaz,2") # => ["foo", "0"]
|
|
|
|
#
|
|
|
|
# Returns +nil+ if the argument is an empty \String:
|
|
|
|
# CSV.parse_line('') # => nil
|
|
|
|
#
|
|
|
|
# ---
|
|
|
|
#
|
|
|
|
# Raises an exception if the argument is +nil+:
|
|
|
|
# # Raises ArgumentError (Cannot parse nil as CSV):
|
|
|
|
# CSV.parse_line(nil)
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
def parse_line(line, **options)
|
2020-05-16 23:02:55 -04:00
|
|
|
new(line, **options).each.first
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# Use to slurp a CSV file into an Array of Arrays. Pass the +path+ to the
|
2020-05-12 17:42:45 -04:00
|
|
|
# file and +options+.
|
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
|
|
|
#
|
|
|
|
# This method also understands
|
2019-10-12 01:03:21 -04:00
|
|
|
# an additional <tt>:encoding</tt> parameter that you can use to specify the
|
|
|
|
# Encoding of the data in the file to be read. You must provide this unless
|
|
|
|
# your data is in Encoding::default_external(). CSV will use this to determine
|
|
|
|
# how to parse the data. You may provide a second Encoding to have the data
|
|
|
|
# transcoded as it is read. For example,
|
|
|
|
# <tt>encoding: "UTF-32BE:UTF-8"</tt> would read UTF-32BE data from the file
|
|
|
|
# but transcode it to UTF-8 before CSV parses it.
|
|
|
|
#
|
|
|
|
def read(path, **options)
|
|
|
|
open(path, **options) { |csv| csv.read }
|
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
# Alias for CSV::read().
|
|
|
|
def readlines(path, **options)
|
|
|
|
read(path, **options)
|
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# A shortcut for:
|
|
|
|
#
|
|
|
|
# CSV.read( path, { headers: true,
|
|
|
|
# converters: :numeric,
|
|
|
|
# header_converters: :symbol }.merge(options) )
|
|
|
|
#
|
2020-05-12 17:42:45 -04:00
|
|
|
# See {Options for Parsing}[#class-CSV-label-Options+for+Parsing].
|
2019-10-12 01:03:21 -04:00
|
|
|
def table(path, **options)
|
|
|
|
default_options = {
|
|
|
|
headers: true,
|
|
|
|
converters: :numeric,
|
|
|
|
header_converters: :symbol,
|
|
|
|
}
|
|
|
|
options = default_options.merge(options)
|
|
|
|
read(path, **options)
|
|
|
|
end
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2020-05-17 17:01:57 -04:00
|
|
|
# :call-seq:
|
|
|
|
# CSV.new(string)
|
|
|
|
# CSV.new(io)
|
|
|
|
# CSV.new(string, **options)
|
|
|
|
# CSV.new(io, **options)
|
|
|
|
#
|
|
|
|
# Returns the new \CSV object created using +string+ or +io+
|
|
|
|
# and the specified +options+.
|
|
|
|
#
|
|
|
|
# Argument +string+ should be a \String object;
|
|
|
|
# it will be put into a new \StringIO object positioned at the beginning.
|
|
|
|
#
|
|
|
|
# Argument +io+ should be an \IO object; it will be positioned at the beginning.
|
|
|
|
#
|
|
|
|
# To position at the end, for appending, use method CSV.generate.
|
|
|
|
# For any other positioning, pass a preset StringIO object instead.
|
|
|
|
#
|
|
|
|
# In addition to the \CSV instance methods, several \IO
|
|
|
|
# methods are delegated. See CSV::open for a complete list.
|
|
|
|
#
|
|
|
|
# For +options+, see:
|
|
|
|
# * {Options for Parsing}[#class-CSV-label-Options+for+Parsing]
|
|
|
|
# * {Options for Generating}[#class-CSV-label-Options+for+Generating]
|
|
|
|
#
|
|
|
|
# For performance reasons, the options cannot be overridden
|
|
|
|
# in a \CSV object, so the options specified here will endure.
|
|
|
|
#
|
|
|
|
# ---
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Create a \CSV object from a \String object:
|
|
|
|
# csv = CSV.new('foo,0')
|
|
|
|
# csv # => #<CSV io_type:StringIO encoding:UTF-8 lineno:0 col_sep:"," row_sep:"\n" quote_char:"\"">
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Create a \CSV object from a \File object:
|
|
|
|
# File.write('t.csv', 'foo,0')
|
|
|
|
# csv = CSV.new(File.open('t.csv'))
|
|
|
|
# csv # => #<CSV io_type:File io_path:"t.csv" encoding:UTF-8 lineno:0 col_sep:"," row_sep:"\n" quote_char:"\"">
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# ---
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2020-05-17 17:01:57 -04:00
|
|
|
# Raises an exception if the argument is +nil+:
|
|
|
|
# # Raises ArgumentError (Cannot parse nil as CSV):
|
|
|
|
# CSV.new(nil)
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def initialize(data,
|
|
|
|
col_sep: ",",
|
|
|
|
row_sep: :auto,
|
|
|
|
quote_char: '"',
|
|
|
|
field_size_limit: nil,
|
|
|
|
converters: nil,
|
|
|
|
unconverted_fields: nil,
|
|
|
|
headers: false,
|
|
|
|
return_headers: false,
|
|
|
|
write_headers: nil,
|
|
|
|
header_converters: nil,
|
|
|
|
skip_blanks: false,
|
|
|
|
force_quotes: false,
|
|
|
|
skip_lines: nil,
|
|
|
|
liberal_parsing: false,
|
|
|
|
internal_encoding: nil,
|
|
|
|
external_encoding: nil,
|
|
|
|
encoding: nil,
|
2018-05-09 00:39:16 -04:00
|
|
|
nil_value: nil,
|
2019-01-25 01:49:59 -05:00
|
|
|
empty_value: "",
|
2019-04-14 17:01:51 -04:00
|
|
|
quote_empty: true,
|
|
|
|
write_converters: nil,
|
|
|
|
write_nil_value: nil,
|
|
|
|
write_empty_value: "",
|
|
|
|
strip: false)
|
2017-07-28 03:46:20 -04:00
|
|
|
raise ArgumentError.new("Cannot parse nil as CSV") if data.nil?
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
if data.is_a?(String)
|
|
|
|
@io = StringIO.new(data)
|
|
|
|
@io.set_encoding(encoding || data.encoding)
|
|
|
|
else
|
|
|
|
@io = data
|
|
|
|
end
|
2018-05-09 00:39:16 -04:00
|
|
|
@encoding = determine_encoding(encoding, internal_encoding)
|
2018-12-23 02:00:35 -05:00
|
|
|
|
|
|
|
@base_fields_converter_options = {
|
|
|
|
nil_value: nil_value,
|
|
|
|
empty_value: empty_value,
|
|
|
|
}
|
2019-04-14 17:01:51 -04:00
|
|
|
@write_fields_converter_options = {
|
|
|
|
nil_value: write_nil_value,
|
|
|
|
empty_value: write_empty_value,
|
|
|
|
}
|
2018-12-23 02:00:35 -05:00
|
|
|
@initial_converters = converters
|
|
|
|
@initial_header_converters = header_converters
|
2019-04-14 17:01:51 -04:00
|
|
|
@initial_write_converters = write_converters
|
2018-12-23 02:00:35 -05:00
|
|
|
|
|
|
|
@parser_options = {
|
|
|
|
column_separator: col_sep,
|
|
|
|
row_separator: row_sep,
|
|
|
|
quote_character: quote_char,
|
|
|
|
field_size_limit: field_size_limit,
|
|
|
|
unconverted_fields: unconverted_fields,
|
|
|
|
headers: headers,
|
|
|
|
return_headers: return_headers,
|
|
|
|
skip_blanks: skip_blanks,
|
|
|
|
skip_lines: skip_lines,
|
|
|
|
liberal_parsing: liberal_parsing,
|
|
|
|
encoding: @encoding,
|
|
|
|
nil_value: nil_value,
|
|
|
|
empty_value: empty_value,
|
2019-04-14 17:01:51 -04:00
|
|
|
strip: strip,
|
2018-12-23 02:00:35 -05:00
|
|
|
}
|
|
|
|
@parser = nil
|
2019-04-17 09:02:40 -04:00
|
|
|
@parser_enumerator = nil
|
|
|
|
@eof_error = nil
|
2018-12-23 02:00:35 -05:00
|
|
|
|
|
|
|
@writer_options = {
|
|
|
|
encoding: @encoding,
|
|
|
|
force_encoding: (not encoding.nil?),
|
|
|
|
force_quotes: force_quotes,
|
|
|
|
headers: headers,
|
|
|
|
write_headers: write_headers,
|
|
|
|
column_separator: col_sep,
|
|
|
|
row_separator: row_sep,
|
|
|
|
quote_character: quote_char,
|
2019-01-25 01:49:59 -05:00
|
|
|
quote_empty: quote_empty,
|
2018-12-23 02:00:35 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
@writer = nil
|
|
|
|
writer if @writer_options[:write_headers]
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# The encoded <tt>:col_sep</tt> used in parsing and writing.
|
|
|
|
# See CSV::new for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def col_sep
|
|
|
|
parser.column_separator
|
|
|
|
end
|
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# The encoded <tt>:row_sep</tt> used in parsing and writing.
|
|
|
|
# See CSV::new for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def row_sep
|
|
|
|
parser.row_separator
|
|
|
|
end
|
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# The encoded <tt>:quote_char</tt> used in parsing and writing.
|
|
|
|
# See CSV::new for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def quote_char
|
|
|
|
parser.quote_character
|
|
|
|
end
|
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# The limit for field size, if any.
|
|
|
|
# See CSV::new for details.
|
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def field_size_limit
|
|
|
|
parser.field_size_limit
|
|
|
|
end
|
2012-08-20 16:52:36 -04:00
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# The regex marking a line as a comment.
|
|
|
|
# See CSV::new for details.
|
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def skip_lines
|
|
|
|
parser.skip_lines
|
|
|
|
end
|
2012-08-20 16:52:36 -04:00
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# Returns the current list of converters in effect. See CSV::new for details.
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Built-in converters will be returned by name, while others will be returned
|
|
|
|
# as is.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
def converters
|
2019-04-14 17:01:51 -04:00
|
|
|
parser_fields_converter.map do |converter|
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
name = Converters.rassoc(converter)
|
|
|
|
name ? name.first : converter
|
|
|
|
end
|
|
|
|
end
|
2019-10-12 01:03:21 -04:00
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# Returns +true+ if unconverted_fields() to parsed results.
|
|
|
|
# See CSV::new for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def unconverted_fields?
|
|
|
|
parser.unconverted_fields?
|
|
|
|
end
|
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Returns +nil+ if headers will not be used, +true+ if they will but have not
|
2019-10-12 01:03:21 -04:00
|
|
|
# yet been read, or the actual headers after they have been read.
|
|
|
|
# See CSV::new for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
def headers
|
2018-12-23 02:00:35 -05:00
|
|
|
if @writer
|
|
|
|
@writer.headers
|
|
|
|
else
|
|
|
|
parsed_headers = parser.headers
|
|
|
|
return parsed_headers if parsed_headers
|
|
|
|
raw_headers = @parser_options[:headers]
|
|
|
|
raw_headers = nil if raw_headers == false
|
|
|
|
raw_headers
|
|
|
|
end
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Returns +true+ if headers will be returned as a row of results.
|
|
|
|
# See CSV::new for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def return_headers?
|
|
|
|
parser.return_headers?
|
|
|
|
end
|
|
|
|
|
2019-10-12 01:03:21 -04:00
|
|
|
#
|
|
|
|
# Returns +true+ if headers are written in output.
|
|
|
|
# See CSV::new for details.
|
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def write_headers?
|
|
|
|
@writer_options[:write_headers]
|
|
|
|
end
|
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2019-10-12 01:03:21 -04:00
|
|
|
# Returns the current list of converters in effect for headers. See CSV::new
|
|
|
|
# for details. Built-in converters will be returned by name, while others
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# will be returned as is.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
def header_converters
|
2018-12-23 02:00:35 -05:00
|
|
|
header_fields_converter.map do |converter|
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
name = HeaderConverters.rassoc(converter)
|
|
|
|
name ? name.first : converter
|
|
|
|
end
|
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Returns +true+ blank lines are skipped by the parser. See CSV::new
|
|
|
|
# for details.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def skip_blanks?
|
|
|
|
parser.skip_blanks?
|
|
|
|
end
|
|
|
|
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Returns +true+ if all output fields are quoted. See CSV::new for details.
|
2018-12-23 02:00:35 -05:00
|
|
|
def force_quotes?
|
|
|
|
@writer_options[:force_quotes]
|
|
|
|
end
|
|
|
|
|
2015-12-31 21:44:48 -05:00
|
|
|
# Returns +true+ if illegal input is handled. See CSV::new for details.
|
2018-12-23 02:00:35 -05:00
|
|
|
def liberal_parsing?
|
|
|
|
parser.liberal_parsing?
|
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# The Encoding CSV is parsing or writing in. This will be the Encoding you
|
|
|
|
# receive parsed data in and/or the Encoding data will be written in.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
attr_reader :encoding
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
# The line number of the last row read from this file. Fields with nested
|
2007-12-24 21:46:26 -05:00
|
|
|
# line-end characters will not affect this count.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def lineno
|
|
|
|
if @writer
|
|
|
|
@writer.lineno
|
|
|
|
else
|
|
|
|
parser.lineno
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
#
|
|
|
|
# The last row read from this file.
|
|
|
|
#
|
|
|
|
def line
|
|
|
|
parser.line
|
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
### IO and StringIO Delegation ###
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
extend Forwardable
|
2019-04-14 17:01:51 -04:00
|
|
|
def_delegators :@io, :binmode, :close, :close_read, :close_write,
|
|
|
|
:closed?, :external_encoding, :fcntl,
|
|
|
|
:fileno, :flush, :fsync, :internal_encoding,
|
|
|
|
:isatty, :pid, :pos, :pos=, :reopen,
|
|
|
|
:seek, :string, :sync, :sync=, :tell,
|
|
|
|
:truncate, :tty?
|
|
|
|
|
|
|
|
def binmode?
|
|
|
|
if @io.respond_to?(:binmode?)
|
|
|
|
@io.binmode?
|
|
|
|
else
|
|
|
|
false
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def flock(*args)
|
|
|
|
raise NotImplementedError unless @io.respond_to?(:flock)
|
|
|
|
@io.flock(*args)
|
|
|
|
end
|
|
|
|
|
|
|
|
def ioctl(*args)
|
|
|
|
raise NotImplementedError unless @io.respond_to?(:ioctl)
|
|
|
|
@io.ioctl(*args)
|
|
|
|
end
|
|
|
|
|
|
|
|
def path
|
|
|
|
@io.path if @io.respond_to?(:path)
|
|
|
|
end
|
|
|
|
|
|
|
|
def stat(*args)
|
|
|
|
raise NotImplementedError unless @io.respond_to?(:stat)
|
|
|
|
@io.stat(*args)
|
|
|
|
end
|
|
|
|
|
|
|
|
def to_i
|
|
|
|
raise NotImplementedError unless @io.respond_to?(:to_i)
|
|
|
|
@io.to_i
|
|
|
|
end
|
|
|
|
|
|
|
|
def to_io
|
|
|
|
@io.respond_to?(:to_io) ? @io.to_io : @io
|
|
|
|
end
|
|
|
|
|
|
|
|
def eof?
|
2019-04-17 09:02:40 -04:00
|
|
|
return false if @eof_error
|
2019-04-14 17:01:51 -04:00
|
|
|
begin
|
|
|
|
parser_enumerator.peek
|
|
|
|
false
|
2019-04-17 09:02:40 -04:00
|
|
|
rescue MalformedCSVError => error
|
|
|
|
@eof_error = error
|
|
|
|
false
|
2019-04-14 17:01:51 -04:00
|
|
|
rescue StopIteration
|
|
|
|
true
|
|
|
|
end
|
|
|
|
end
|
|
|
|
alias_method :eof, :eof?
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
# Rewinds the underlying IO object and resets CSV's lineno() counter.
|
|
|
|
def rewind
|
2018-12-23 02:00:35 -05:00
|
|
|
@parser = nil
|
|
|
|
@parser_enumerator = nil
|
2019-04-17 09:02:40 -04:00
|
|
|
@eof_error = nil
|
2018-12-23 02:00:35 -05:00
|
|
|
@writer.rewind if @writer
|
2007-12-24 21:46:26 -05:00
|
|
|
@io.rewind
|
|
|
|
end
|
|
|
|
|
|
|
|
### End Delegation ###
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# The primary write method for wrapped Strings and IOs, +row+ (an Array or
|
2019-10-12 01:03:21 -04:00
|
|
|
# CSV::Row) is converted to CSV and appended to the data source. When a
|
2007-12-24 21:46:26 -05:00
|
|
|
# CSV::Row is passed, only the row's fields() are appended to the output.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# The data source must be open for writing.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
def <<(row)
|
2018-12-23 02:00:35 -05:00
|
|
|
writer << row
|
|
|
|
self
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
alias_method :add_row, :<<
|
|
|
|
alias_method :puts, :<<
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# :call-seq:
|
|
|
|
# convert( name )
|
|
|
|
# convert { |field| ... }
|
|
|
|
# convert { |field, field_info| ... }
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# You can use this method to install a CSV::Converters built-in, or provide a
|
|
|
|
# block that handles a custom conversion.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# If you provide a block that takes one argument, it will be passed the field
|
2019-10-12 01:03:21 -04:00
|
|
|
# and is expected to return the converted value or the field itself. If your
|
2009-03-05 22:56:38 -05:00
|
|
|
# block takes two arguments, it will also be passed a CSV::FieldInfo Struct,
|
2019-10-12 01:03:21 -04:00
|
|
|
# containing details about the field. Again, the block should return a
|
2007-12-24 21:46:26 -05:00
|
|
|
# converted field or the field itself.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
def convert(name = nil, &converter)
|
2019-04-14 17:01:51 -04:00
|
|
|
parser_fields_converter.add_converter(name, &converter)
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# :call-seq:
|
|
|
|
# header_convert( name )
|
|
|
|
# header_convert { |field| ... }
|
|
|
|
# header_convert { |field, field_info| ... }
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# Identical to CSV#convert(), but for header rows.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# Note that this method must be called before header rows are read to have any
|
|
|
|
# effect.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
def header_convert(name = nil, &converter)
|
2018-12-23 02:00:35 -05:00
|
|
|
header_fields_converter.add_converter(name, &converter)
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
include Enumerable
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# Yields each row of the data source in turn.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# Support for Enumerable.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# The data source must be open for reading.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2018-12-23 02:00:35 -05:00
|
|
|
def each(&block)
|
2019-04-14 17:01:51 -04:00
|
|
|
parser_enumerator.each(&block)
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# Slurps the remaining rows and returns an Array of Arrays.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# The data source must be open for reading.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
def read
|
|
|
|
rows = to_a
|
2019-01-25 01:49:59 -05:00
|
|
|
if parser.use_headers?
|
|
|
|
Table.new(rows, headers: parser.headers)
|
2007-12-24 21:46:26 -05:00
|
|
|
else
|
|
|
|
rows
|
|
|
|
end
|
|
|
|
end
|
|
|
|
alias_method :readlines, :read
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
# Returns +true+ if the next row read will be a header row.
|
|
|
|
def header_row?
|
2018-12-23 02:00:35 -05:00
|
|
|
parser.header_row?
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# The primary read method for wrapped Strings and IOs, a single row is pulled
|
|
|
|
# from the data source, parsed and returned as an Array of fields (if header
|
|
|
|
# rows are not used) or a CSV::Row (when header rows are used).
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# The data source must be open for reading.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
def shift
|
2019-04-17 09:02:40 -04:00
|
|
|
if @eof_error
|
|
|
|
eof_error, @eof_error = @eof_error, nil
|
|
|
|
raise eof_error
|
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
begin
|
2019-04-14 17:01:51 -04:00
|
|
|
parser_enumerator.next
|
2018-12-23 02:00:35 -05:00
|
|
|
rescue StopIteration
|
|
|
|
nil
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
end
|
|
|
|
alias_method :gets, :shift
|
|
|
|
alias_method :readline, :shift
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2010-10-07 11:25:23 -04:00
|
|
|
# Returns a simplified description of the key CSV attributes in an
|
2008-12-26 11:53:13 -05:00
|
|
|
# ASCII compatible String.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
def inspect
|
2019-07-25 03:39:28 -04:00
|
|
|
str = ["#<", self.class.to_s, " io_type:"]
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
# show type of wrapped IO
|
|
|
|
if @io == $stdout then str << "$stdout"
|
|
|
|
elsif @io == $stdin then str << "$stdin"
|
|
|
|
elsif @io == $stderr then str << "$stderr"
|
|
|
|
else str << @io.class.to_s
|
|
|
|
end
|
|
|
|
# show IO.path(), if available
|
|
|
|
if @io.respond_to?(:path) and (p = @io.path)
|
|
|
|
str << " io_path:" << p.inspect
|
|
|
|
end
|
|
|
|
# show encoding
|
|
|
|
str << " encoding:" << @encoding.name
|
|
|
|
# show other attributes
|
2018-12-23 02:00:35 -05:00
|
|
|
["lineno", "col_sep", "row_sep", "quote_char"].each do |attr_name|
|
|
|
|
if a = __send__(attr_name)
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
str << " " << attr_name << ":" << a.inspect
|
|
|
|
end
|
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
["skip_blanks", "liberal_parsing"].each do |attr_name|
|
|
|
|
if a = __send__("#{attr_name}?")
|
|
|
|
str << " " << attr_name << ":" << a.inspect
|
|
|
|
end
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
_headers = headers
|
|
|
|
str << " headers:" << _headers.inspect if _headers
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
str << ">"
|
2008-12-26 11:53:13 -05:00
|
|
|
begin
|
2010-12-25 01:58:58 -05:00
|
|
|
str.join('')
|
2008-12-26 11:53:13 -05:00
|
|
|
rescue # any encoding error
|
|
|
|
str.map do |s|
|
|
|
|
e = Encoding::Converter.asciicompat_encoding(s.encoding)
|
|
|
|
e ? s.encode(e) : s.force_encoding("ASCII-8BIT")
|
2010-12-25 01:58:58 -05:00
|
|
|
end.join('')
|
2008-12-26 11:53:13 -05:00
|
|
|
end
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2007-12-24 21:46:26 -05:00
|
|
|
private
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2018-05-09 00:39:16 -04:00
|
|
|
def determine_encoding(encoding, internal_encoding)
|
|
|
|
# honor the IO encoding if we can, otherwise default to ASCII-8BIT
|
2018-12-23 02:00:35 -05:00
|
|
|
io_encoding = raw_encoding
|
2018-05-09 00:39:16 -04:00
|
|
|
return io_encoding if io_encoding
|
|
|
|
|
|
|
|
return Encoding.find(internal_encoding) if internal_encoding
|
|
|
|
|
|
|
|
if encoding
|
|
|
|
encoding, = encoding.split(":", 2) if encoding.is_a?(String)
|
|
|
|
return Encoding.find(encoding)
|
|
|
|
end
|
|
|
|
|
|
|
|
Encoding.default_internal || Encoding.default_external
|
|
|
|
end
|
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def normalize_converters(converters)
|
|
|
|
converters ||= []
|
|
|
|
unless converters.is_a?(Array)
|
|
|
|
converters = [converters]
|
2012-08-20 16:52:36 -04:00
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
converters.collect do |converter|
|
|
|
|
case converter
|
|
|
|
when Proc # custom code block
|
|
|
|
[nil, converter]
|
|
|
|
else # by name
|
|
|
|
[converter, nil]
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
# Processes +fields+ with <tt>@converters</tt>, or <tt>@header_converters</tt>
|
2019-10-12 01:03:21 -04:00
|
|
|
# if +headers+ is passed as +true+, returning the converted field set. Any
|
2007-12-24 21:46:26 -05:00
|
|
|
# converter that changes the field into something other than a String halts
|
2019-10-12 01:03:21 -04:00
|
|
|
# the pipeline of conversion for that field. This is primarily an efficiency
|
2007-12-24 21:46:26 -05:00
|
|
|
# shortcut.
|
2009-03-05 22:56:38 -05:00
|
|
|
#
|
2007-12-24 21:46:26 -05:00
|
|
|
def convert_fields(fields, headers = false)
|
2018-05-09 00:39:16 -04:00
|
|
|
if headers
|
2018-12-23 02:00:35 -05:00
|
|
|
header_fields_converter.convert(fields, nil, 0)
|
2018-05-09 00:39:16 -04:00
|
|
|
else
|
2019-04-14 17:01:51 -04:00
|
|
|
parser_fields_converter.convert(fields, @headers, lineno)
|
2018-05-09 00:39:16 -04:00
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
#
|
|
|
|
# Returns the encoding of the internal IO object.
|
|
|
|
#
|
|
|
|
def raw_encoding
|
|
|
|
if @io.respond_to? :internal_encoding
|
|
|
|
@io.internal_encoding || @io.external_encoding
|
|
|
|
elsif @io.respond_to? :encoding
|
|
|
|
@io.encoding
|
|
|
|
else
|
|
|
|
nil
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2019-04-14 17:01:51 -04:00
|
|
|
def parser_fields_converter
|
|
|
|
@parser_fields_converter ||= build_parser_fields_converter
|
2018-12-23 02:00:35 -05:00
|
|
|
end
|
|
|
|
|
2019-04-14 17:01:51 -04:00
|
|
|
def build_parser_fields_converter
|
2018-12-23 02:00:35 -05:00
|
|
|
specific_options = {
|
|
|
|
builtin_converters: Converters,
|
|
|
|
}
|
|
|
|
options = @base_fields_converter_options.merge(specific_options)
|
2019-04-14 17:01:51 -04:00
|
|
|
build_fields_converter(@initial_converters, options)
|
2018-12-23 02:00:35 -05:00
|
|
|
end
|
2007-12-24 21:46:26 -05:00
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def header_fields_converter
|
|
|
|
@header_fields_converter ||= build_header_fields_converter
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def build_header_fields_converter
|
|
|
|
specific_options = {
|
|
|
|
builtin_converters: HeaderConverters,
|
|
|
|
accept_nil: true,
|
|
|
|
}
|
|
|
|
options = @base_fields_converter_options.merge(specific_options)
|
2019-04-14 17:01:51 -04:00
|
|
|
build_fields_converter(@initial_header_converters, options)
|
|
|
|
end
|
|
|
|
|
|
|
|
def writer_fields_converter
|
|
|
|
@writer_fields_converter ||= build_writer_fields_converter
|
|
|
|
end
|
|
|
|
|
|
|
|
def build_writer_fields_converter
|
|
|
|
build_fields_converter(@initial_write_converters,
|
|
|
|
@write_fields_converter_options)
|
|
|
|
end
|
|
|
|
|
|
|
|
def build_fields_converter(initial_converters, options)
|
2018-12-23 02:00:35 -05:00
|
|
|
fields_converter = FieldsConverter.new(options)
|
2019-04-14 17:01:51 -04:00
|
|
|
normalize_converters(initial_converters).each do |name, converter|
|
2018-12-23 02:00:35 -05:00
|
|
|
fields_converter.add_converter(name, &converter)
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2018-12-23 02:00:35 -05:00
|
|
|
fields_converter
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def parser
|
|
|
|
@parser ||= Parser.new(@io, parser_options)
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def parser_options
|
2019-04-14 17:01:51 -04:00
|
|
|
@parser_options.merge(header_fields_converter: header_fields_converter,
|
|
|
|
fields_converter: parser_fields_converter)
|
|
|
|
end
|
|
|
|
|
|
|
|
def parser_enumerator
|
|
|
|
@parser_enumerator ||= parser.parse
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
2009-03-05 22:56:38 -05:00
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def writer
|
|
|
|
@writer ||= Writer.new(@io, writer_options)
|
* lib/csv/csv.rb: Reworked CSV's parser and generator to be m17n. Data
is now parsed in the Encoding it is in without need for translation.
* lib/csv/csv.rb: Improved inspect() messages for better IRb support.
* lib/csv/csv.rb: Fixed header writing bug reported by Dov Murik.
* lib/csv/csv.rb: Use custom separators in parsing header Strings as
suggested by Shmulik Regev.
* lib/csv/csv.rb: Added a :write_headers option for outputting headers.
* lib/csv/csv.rb: Handle open() calls in binary mode whenever we can to
workaround a Windows issue where line-ending translation can cause an
off-by-one error in seeking back to a non-zero starting position after
auto-discovery for :row_sep as suggested by Robert Battle.
* lib/csv/csv.rb: Improved the parser to fail faster when fed some forms
of invalid CSV that can be detected without reading ahead.
* lib/csv/csv.rb: Added a :field_size_limit option to control CSV's
lookahead and prevent the parser from biting off more data than
it can chew.
* lib/csv/csv.rb: Added readers for CSV attributes: col_sep(), row_sep(),
quote_char(), field_size_limit(), converters(), unconverted_fields?(),
headers(), return_headers?(), write_headers?(), header_converters(),
skip_blanks?(), and force_quotes?().
* lib/csv/csv.rb: Cleaned up code syntax to be more inline with
Ruby 1.9 than 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-09-20 20:39:03 -04:00
|
|
|
end
|
|
|
|
|
2018-12-23 02:00:35 -05:00
|
|
|
def writer_options
|
2019-04-14 17:01:51 -04:00
|
|
|
@writer_options.merge(header_fields_converter: header_fields_converter,
|
|
|
|
fields_converter: writer_fields_converter)
|
2009-10-15 14:19:15 -04:00
|
|
|
end
|
2007-12-24 21:46:26 -05:00
|
|
|
end
|
|
|
|
|
2012-09-19 18:07:44 -04:00
|
|
|
# Passes +args+ to CSV::instance.
|
|
|
|
#
|
|
|
|
# CSV("CSV,data").read
|
|
|
|
# #=> [["CSV", "data"]]
|
|
|
|
#
|
|
|
|
# If a block is given, the instance is passed the block and the return value
|
|
|
|
# becomes the return value of the block.
|
|
|
|
#
|
|
|
|
# CSV("CSV,data") { |c|
|
|
|
|
# c.read.any? { |a| a.include?("data") }
|
|
|
|
# } #=> true
|
|
|
|
#
|
|
|
|
# CSV("CSV,data") { |c|
|
|
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# c.read.any? { |a| a.include?("zombies") }
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2012-09-20 03:06:06 -04:00
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# } #=> false
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2012-09-19 18:07:44 -04:00
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#
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2007-12-24 21:46:26 -05:00
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def CSV(*args, &block)
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CSV.instance(*args, &block)
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end
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2018-05-09 00:39:16 -04:00
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require_relative "csv/version"
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require_relative "csv/core_ext/array"
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require_relative "csv/core_ext/string"
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