Support for dryml files to gettext:find rake task

[Antero Hynynen]

Hi, we are using fast_gettext with hobo 2.0.0.pre7 as we like to use dryml templates. We added feeble support for dryml files to gettext:find rake task by creating a dryml parser to lib by modifying an erb parser a bit and then by calling it in gettext:find task. Here are related files if someone is interested..

lib/tasks/gettext.rake

namespace :gettext do

 task :dryml_parser do
 require 'dryml_parser'
 end

 def files_to_translate
 Dir.glob("{app,lib,config,#{locale_path}}/**/*.{rb,erb,haml,slim,dryml}")
 end
end

task :'gettext:find' => :'gettext:dryml_parser'

lib/dryml_parser

require 'erb'
require 'gettext/tools/parser/ruby'
require 'gettext/tools/xgettext'

module GetText
 class DrymlParser
 @config = {
 :extnames => ['.dryml']
 }

 class << self
 # Sets some preferences to parse ERB files.
 # * config: a Hash of the config. It can takes some values below:
 def init(config)
 config.each{|k, v|
 @config[k] = v
 }
 end

 def target?(file) # :nodoc:
 @config[:extnames].each do |v|
 return true if File.extname(file) == v
 end
 false
 end

 # Parses eRuby script located at `path`.
 #
 # This is a short cut method. It equals to `new(path,
 # options).parse`.
 #
 # @return [Array<POEntry>] Extracted messages
 # @see #initialize and #parse
 def parse(path, options={})
 parser = new(path, options)
 parser.parse
 end
 end

 MAGIC_COMMENT = /\A#coding:.*\n/

 # @param path [String] eRuby script path to be parsed
 # @param options [Hash]
 def initialize(path, options={})
 @path = path
 @options = options
 end

 # Extracts messages from @path.
 #
 # @return [Array<POEntry>] Extracted messages
 def parse
 content = IO.read(@path)
 src = ERB.new(content).src

 # Force the src encoding back to the encoding in magic comment
 # or original content.
 encoding = detect_encoding(src) || content.encoding
 src.force_encoding(encoding)

 # Remove magic comment prepended by erb in Ruby 1.9.
 src = src.gsub(MAGIC_COMMENT, "")

 RubyParser.new(@path, @options).parse_source(src)
 end

 def detect_encoding(source)
 if /\A#coding:(.*)\n/ =~ source
 $1
 else
 nil
 end
 end
 end
end

if __FILE__ == $0
 # ex) ruby glade.dryml?
 ARGV.each do |file|
 p GetText::DrymlParser.parse(file)
 end
end

GetText::Tools::XGetText.add_parser(GetText::DrymlParser)

As this code is based on erb parser it does not support all dryml features. Any ideas to make this better would be welcome..

Thanks

[Ignacio Huerta]

Thanks for sharing Antero, I'm afraid you are the first one to try
adding gettext support to Dryml!

> deftarget?(file)# :nodoc:

> @config[:extnames].each do|v|
> returntrueifFile.extname(file)==v
> end
> false
> end
>
> # Parses eRuby script located at `path`.
> #
> # This is a short cut method. It equals to `new(path,
> # options).parse`.
> #
> # @return [Array<POEntry>] Extracted messages
> # @see #initialize and #parse
> defparse(path,options={})
> parser =new(path,options)
> parser.parse
> end
> end
>

> MAGIC_COMMENT =/\A#coding:.*\n/

>
> # @param path [String] eRuby script path to be parsed
> # @param options [Hash]
> definitialize(path,options={})
> @path=path
> @options=options
> end
>
> # Extracts messages from @path.
> #
> # @return [Array<POEntry>] Extracted messages
> defparse
> content =IO.read(@path)
> src =ERB.new(content).src
>
> # Force the src encoding back to the encoding in magic comment
> # or original content.

> encoding =detect_encoding(src)||content.encoding

> src.force_encoding(encoding)
>
> # Remove magic comment prepended by erb in Ruby 1.9.
> src =src.gsub(MAGIC_COMMENT,"")
>
> RubyParser.new(@path,@options).parse_source(src)
> end
>
> defdetect_encoding(source)

> if/\A#coding:(.*)\n/ =~ source

> $1
> else
> nil
> end
> end
> end
> end
>
> if__FILE__ ==$0
> # ex) ruby glade.dryml?
> ARGV.each do|file|
> p GetText::DrymlParser.parse(file)
> end
> end
>
> GetText::Tools::XGetText.add_parser(GetText::DrymlParser)
> |
>
> As this code is based on erb parser it does not support all dryml
> features. Any ideas to make this better would be welcome..
>
> Thanks
>

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[Antero Hynynen]

Here is updated version of lib/dryml_parser.rb which adds light support for string interpolation syntax i.e. #{...} which we also use for translation keys. Note that only basic usage is supported by this code..

      # convert dryml scriptlets to erb form..
      content = content.gsub(/\#\{(.*?)\}/m) { "<%= #{$1} %>" }

[Ignacio Huerta]

Nice work, thanks!

El 13-01-2015 a las 16:55, Antero Hynynen escribió:
> Here is updated version of *lib/dryml_parser.rb* which adds light