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Adding a liberal_parsing option to CSV. Patch by Braden Anderson.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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3 changed files with 51 additions and 4 deletions
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@ -1,3 +1,9 @@
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Fri Jan 1 11:42:57 2016 James Edward Gray II <james@graysoftinc.com>
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* lib/csv.rb (CSV): Add a liberal_parsing option.
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Patch by Braden Anderson. [#11839]
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* test/csv/test_features.rb: test liberal_parsing
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Fri Jan 1 10:27:28 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
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* tool/mkconfig.rb (RbConfig): prefix SDKROOT to oldincludedir
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26
lib/csv.rb
26
lib/csv.rb
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@ -1019,6 +1019,7 @@ class CSV
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# <b><tt>:skip_blanks</tt></b>:: +false+
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# <b><tt>:force_quotes</tt></b>:: +false+
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# <b><tt>:skip_lines</tt></b>:: +nil+
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# <b><tt>:liberal_parsing</tt></b>:: +false+
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#
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DEFAULT_OPTIONS = {
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col_sep: ",",
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@ -1033,6 +1034,7 @@ class CSV
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skip_blanks: false,
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force_quotes: false,
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skip_lines: nil,
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liberal_parsing: false,
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}.freeze
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#
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@ -1499,6 +1501,10 @@ class CSV
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# a comment. If the passed object does
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# not respond to <tt>match</tt>,
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# <tt>ArgumentError</tt> is thrown.
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# <b><tt>:liberal_parsing</tt></b>:: When set to a +true+ value, CSV will
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# attempt to parse input not conformant
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# with RFC 4180, such as double quotes
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# in unquoted fields.
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#
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# See CSV::DEFAULT_OPTIONS for the default settings.
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#
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@ -1622,6 +1628,8 @@ class CSV
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def skip_blanks?() @skip_blanks end
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# Returns +true+ if all output fields are quoted. See CSV::new for details.
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def force_quotes?() @force_quotes end
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# Returns +true+ if illegal input is handled. See CSV::new for details.
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def liberal_parsing?() @liberal_parsing end
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#
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# The Encoding CSV is parsing or writing in. This will be the Encoding you
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@ -1860,12 +1868,12 @@ class CSV
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end
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elsif part[0] == @quote_char
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# If we are starting a new quoted column
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if part[-1] != @quote_char || part.count(@quote_char) % 2 != 0
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if part.count(@quote_char) % 2 != 0
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# start an extended column
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csv << part[1..-1]
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csv.last << @col_sep
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in_extended_col = true
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else
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elsif part[-1] == @quote_char
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# regular quoted column
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csv << part[1..-2]
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if csv.last =~ @parsers[:stray_quote]
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@ -1873,6 +1881,11 @@ class CSV
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"Missing or stray quote in line #{lineno + 1}"
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end
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csv.last.gsub!(@quote_char * 2, @quote_char)
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elsif @liberal_parsing
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csv << part
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else
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raise MalformedCSVError,
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"Missing or stray quote in line #{lineno + 1}"
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end
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elsif part =~ @parsers[:quote_or_nl]
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# Unquoted field with bad characters.
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@ -1880,7 +1893,11 @@ class CSV
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raise MalformedCSVError, "Unquoted fields do not allow " +
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"\\r or \\n (line #{lineno + 1})."
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else
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raise MalformedCSVError, "Illegal quoting in line #{lineno + 1}."
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if @liberal_parsing
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csv << part
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else
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raise MalformedCSVError, "Illegal quoting in line #{lineno + 1}."
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end
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end
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else
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# Regular ole unquoted field.
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@ -1945,7 +1962,7 @@ class CSV
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str << " encoding:" << @encoding.name
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# show other attributes
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%w[ lineno col_sep row_sep
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quote_char skip_blanks ].each do |attr_name|
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quote_char skip_blanks liberal_parsing ].each do |attr_name|
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if a = instance_variable_get("@#{attr_name}")
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str << " " << attr_name << ":" << a.inspect
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end
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@ -2079,6 +2096,7 @@ class CSV
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# store the parser behaviors
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@skip_blanks = options.delete(:skip_blanks)
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@field_size_limit = options.delete(:field_size_limit)
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@liberal_parsing = options.delete(:liberal_parsing)
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# prebuild Regexps for faster parsing
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esc_row_sep = escape_re(@row_sep)
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@ -142,6 +142,29 @@ class TestCSV::Features < TestCSV
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assert_equal(3, count)
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end
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def test_liberal_parsing
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input = '"Johnson, Dwayne",Dwayne "The Rock" Johnson'
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assert_raise(CSV::MalformedCSVError) do
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CSV.parse_line(input)
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end
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assert_equal(["Johnson, Dwayne", 'Dwayne "The Rock" Johnson'],
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CSV.parse_line(input, liberal_parsing: true))
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input = '"quoted" field'
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assert_raise(CSV::MalformedCSVError) do
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CSV.parse_line(input)
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end
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assert_equal(['"quoted" field'],
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CSV.parse_line(input, liberal_parsing: true))
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assert_raise(CSV::MalformedCSVError) do
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CSV.parse_line('is,this "three," or four,fields', liberal_parsing: true)
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end
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assert_equal(["is", 'this "three', ' or four"', "fields"],
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CSV.parse_line('is,this "three, or four",fields', liberal_parsing: true))
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end
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def test_csv_behavior_readers
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%w[ unconverted_fields return_headers write_headers
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skip_blanks force_quotes ].each do |behavior|
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