diff options
Diffstat (limited to 'activesupport/lib/active_support/json/backends/yaml.rb')
| -rw-r--r-- | activesupport/lib/active_support/json/backends/yaml.rb | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/activesupport/lib/active_support/json/backends/yaml.rb b/activesupport/lib/active_support/json/backends/yaml.rb index 4cb9d01077..e25e29d36b 100644 --- a/activesupport/lib/active_support/json/backends/yaml.rb +++ b/activesupport/lib/active_support/json/backends/yaml.rb @@ -7,14 +7,21 @@ module ActiveSupport ParseError = ::StandardError extend self + EXCEPTIONS = [::ArgumentError] # :nodoc: + begin + require 'psych' + EXCEPTIONS << Psych::SyntaxError + rescue LoadError + end + # Parses a JSON string or IO and converts it into an object def decode(json) if json.respond_to?(:read) json = json.read end YAML.load(convert_json_to_yaml(json)) - rescue ArgumentError - raise ParseError, "Invalid JSON string" + rescue *EXCEPTIONS => e + raise ParseError, "Invalid JSON string: '%s'" % json end protected @@ -22,21 +29,21 @@ module ActiveSupport def convert_json_to_yaml(json) #:nodoc: require 'strscan' unless defined? ::StringScanner scanner, quoting, marks, pos, times = ::StringScanner.new(json), false, [], nil, [] - while scanner.scan_until(/(\\['"]|['":,\\]|\\.)/) + while scanner.scan_until(/(\\['"]|['":,\\]|\\.|[\]])/) case char = scanner[1] when '"', "'" if !quoting quoting = char pos = scanner.pos elsif quoting == char - if json[pos..scanner.pos-2] =~ DATE_REGEX + if valid_date?(json[pos..scanner.pos-2]) # found a date, track the exact positions of the quotes so we can # overwrite them with spaces later. - times << pos << scanner.pos + times << pos end quoting = false end - when ":","," + when ":",",", "]" marks << scanner.pos - 1 unless quoting when "\\" scanner.skip(/\\/) @@ -47,7 +54,9 @@ module ActiveSupport json.gsub(/\\([\\\/]|u[[:xdigit:]]{4})/) do ustr = $1 if ustr.start_with?('u') - [ustr[1..-1].to_i(16)].pack("U") + char = [ustr[1..-1].to_i(16)].pack("U") + # "\n" needs extra escaping due to yaml formatting + char == "\n" ? "\\n" : char elsif ustr == '\\' '\\\\' else @@ -61,14 +70,18 @@ module ActiveSupport left_pos.each_with_index do |left, i| scanner.pos = left.succ chunk = scanner.peek(right_pos[i] - scanner.pos + 1) - # overwrite the quotes found around the dates with spaces - while times.size > 0 && times[0] <= right_pos[i] - chunk[times.shift - scanner.pos - 1] = ' ' + if ActiveSupport.parse_json_times + # overwrite the quotes found around the dates with spaces + while times.size > 0 && times[0] <= right_pos[i] + chunk.insert(times.shift - scanner.pos - 1, '! ') + end end chunk.gsub!(/\\([\\\/]|u[[:xdigit:]]{4})/) do ustr = $1 if ustr.start_with?('u') - [ustr[1..-1].to_i(16)].pack("U") + char = [ustr[1..-1].to_i(16)].pack("U") + # "\n" needs extra escaping due to yaml formatting + char == "\n" ? "\\n" : char elsif ustr == '\\' '\\\\' else @@ -83,6 +96,16 @@ module ActiveSupport output end end + + private + def valid_date?(date_string) + begin + date_string =~ DATE_REGEX && DateTime.parse(date_string) + rescue ArgumentError + false + end + end + end end end |