e3832c6f79
Upgrade to Rails 2.3.5. Also work around this bug: https://rails.lighthouseapp.com/projects/8994/tickets/3524 created by the aforementioned Rails release.
85 lines
2.8 KiB
Ruby
85 lines
2.8 KiB
Ruby
require 'active_support/core_ext/string/starts_ends_with'
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module ActiveSupport
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module JSON
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module Backends
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module Yaml
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ParseError = ::StandardError
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extend 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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# Ensure that ":" and "," are always followed by a space
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def convert_json_to_yaml(json) #:nodoc:
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require 'strscan' unless defined? ::StringScanner
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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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when "\\"
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scanner.skip(/\\/)
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end
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end
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if marks.empty?
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json.gsub(/\\([\\\/]|u[[:xdigit:]]{4})/) do
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ustr = $1
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if ustr.start_with?('u')
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[ustr[1..-1].to_i(16)].pack("U")
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elsif ustr == '\\'
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'\\\\'
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else
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ustr
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end
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end
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else
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left_pos = [-1].push(*marks)
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right_pos = marks << scanner.pos + scanner.rest_size
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output = []
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left_pos.each_with_index do |left, i|
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scanner.pos = left.succ
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output << scanner.peek(right_pos[i] - scanner.pos + 1).gsub(/\\([\\\/]|u[[:xdigit:]]{4})/) do
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ustr = $1
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if ustr.start_with?('u')
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[ustr[1..-1].to_i(16)].pack("U")
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elsif ustr == '\\'
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'\\\\'
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else
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ustr
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end
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end
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end
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output = output * " "
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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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end
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