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683400f427
memory leaks. use string object for buffering instead. [ruby-dev:24738] * dir.c (join_path): ditto. * io.c (io_read): external input buffer may be modified even after rb_str_locktmp(). [ruby-dev:24735] * dir.c (fnmatch): p or s may be NULL. [ruby-dev:24749] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7242 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
60 lines
1.3 KiB
Ruby
60 lines
1.3 KiB
Ruby
#
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# shellwords.rb: Split text into an array of tokens a la UNIX shell
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#
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#
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# This module is originally a port of shellwords.pl, but modified to
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# conform to POSIX / SUSv3 (IEEE Std 1003.1-2001).
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#
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# Examples:
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#
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# require 'shellwords'
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# words = Shellwords.shellwords(line)
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#
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# or
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#
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# require 'shellwords'
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# include Shellwords
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# words = shellwords(line)
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#
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module Shellwords
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#
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# Split text into an array of tokens in the same way the UNIX Bourne
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# shell does.
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#
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# See the +Shellwords+ module documentation for an example.
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#
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def shellwords(line)
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line = String.new(line) rescue
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raise(ArgumentError, "Argument must be a string")
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line.lstrip!
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words = []
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until line.empty?
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field = ''
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loop do
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if line.sub!(/\A"(([^"\\]|\\.)*)"/, '') then
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snippet = $1.gsub(/\\(.)/, '\1')
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elsif line =~ /\A"/ then
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raise ArgumentError, "Unmatched double quote: #{line}"
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elsif line.sub!(/\A'([^']*)'/, '') then
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snippet = $1
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elsif line =~ /\A'/ then
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raise ArgumentError, "Unmatched single quote: #{line}"
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elsif line.sub!(/\A\\(.)?/, '') then
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snippet = $1 || '\\'
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elsif line.sub!(/\A([^\s\\'"]+)/, '') then
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snippet = $1
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else
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line.lstrip!
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break
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end
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field.concat(snippet)
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end
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words.push(field)
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end
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words
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end
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module_function :shellwords
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end
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