6873fc8026
Upgraded to Rails 2.0.2, except that we maintain vendor/rails/actionpack/lib/action_controller/routing.rb from Rail 1.2.6 (at least for now), so that Routes don't change. We still get to enjoy Rails's many new features. Also fixed a bug in Chunk-handling: disable WikiWord processing in tags (for real this time).
61 lines
2 KiB
Ruby
61 lines
2 KiB
Ruby
require 'yaml'
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require 'strscan'
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module ActiveSupport
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module JSON
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class ParseError < StandardError
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end
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class << self
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# Converts a JSON string into a Ruby object.
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def decode(json)
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YAML.load(convert_json_to_yaml(json))
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rescue ArgumentError => e
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raise ParseError, "Invalid JSON string"
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end
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protected
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# matches YAML-formatted dates
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DATE_REGEX = /^\d{4}-\d{2}-\d{2}|\d{4}-\d{1,2}-\d{1,2}[ \t]+\d{1,2}:\d{2}:\d{2}(\.[0-9]*)?(([ \t]*)Z|[-+]\d{2}?(:\d{2})?)?$/
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# Ensure that ":" and "," are always followed by a space
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def convert_json_to_yaml(json) #:nodoc:
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scanner, quoting, marks, pos, times = StringScanner.new(json), false, [], nil, []
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while scanner.scan_until(/(\\['"]|['":,\\]|\\.)/)
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case char = scanner[1]
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when '"', "'"
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if !quoting
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quoting = char
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pos = scanner.pos
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elsif quoting == char
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if json[pos..scanner.pos-2] =~ DATE_REGEX
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# found a date, track the exact positions of the quotes so we can remove them later.
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# oh, and increment them for each current mark, each one is an extra padded space that bumps
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# the position in the final yaml output
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total_marks = marks.size
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times << pos+total_marks << scanner.pos+total_marks
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end
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quoting = false
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end
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when ":",","
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marks << scanner.pos - 1 unless quoting
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end
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end
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if marks.empty?
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json.gsub(/\\\//, '/')
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else
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# FIXME: multiple slow enumerations
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output = ([0] + marks.map(&:succ)).
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zip(marks + [json.length]).
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map { |left, right| json[left..right] }.
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join(" ")
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times.each { |i| output[i-1] = ' ' }
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output.gsub!(/\\\//, '/')
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output
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end
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end
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end
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end
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end
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