#!/usr/bin/env ruby ############################################################################### # poconvert.rb # Run this script with `help` for more information (or examine this file.) ############################################################################### require 'bundler/setup' # Provides environment for this script. require 'logger' # Log output simplified. require 'fileutils' # File utilities. require 'date' # Make sure DateTime works. require 'fileutils' # compare_file, etc. require 'erb' # Needed for templating. require 'thor' # thor provides robust command line parameter parsing. require 'i18n' # Cross-platform access to `locale`. require 'digest' # For computing checksums. ################################################################################ # module PoConvertModule # This module encapsulates module-level variables, utilities, logging, # the CLI handling class, and the po<->h conversion class. ############################################################################### module PoConvertModule ########################################################### # Setup # Change these variables in case directories are changed. ########################################################### @@default_en = File.expand_path(File.join('..', 'src', 'language_en.h' )) @@header_template = File.expand_path(File.join('.', 'language_ll_cc.h.erb')) @@header_digest = 'b6b869b67a80a86d216c7080ac3d1a62aa3de82bbea37599b30160f22aa78d6c' ########################################################### # Logging ########################################################### @@log = Logger.new(STDOUT) @@log.level = Logger::ERROR @@log.datetime_format = '%Y-%m-%d %H:%M:%S' ########################################################### # property log_level ########################################################### def self.log_level @@log.level end def self.log_level=(level) @@log.level = level end ############################################################################# # class PoPoFile # This class contains information about a parsed PO file. ############################################################################# class PoPoFile include PoConvertModule attr_accessor :language attr_accessor :plural_forms attr_accessor :plural_formula attr_accessor :po_revision_date attr_accessor :last_translator attr_accessor :items ######################################################### # initialize ######################################################### def initialize( file = nil ) @source_file = nil # File path of the header file @language = nil # From the header @plural_forms = nil # From the header @plural_formula = nil # From the header @po_revision_date = nil # String, from the header @last_translator = nil # From the header @items = {} self.source_file = file if file end ######################################################### # property source_file ######################################################### def source_file @source_file end def source_file=( value ) @source_file = nil unless value @@log.error "#{__method__}: A source file must be specified." return end unless value && %w[.po].include?(File.extname(value)) @@log.error "#{__method__}: Source file must be a *.po file." return end unless value && File.exists?(value) @@log.error "#{__method__}: Source file #{value} not found." return end @@log.info "#{__method__}: Source file #{value} will be used." if parse_po( value ) @source_file = value else @@log.error "#{__method__}: Source file #{value} was not able to be parsed properly." end end ######################################################### # parse_po( file ) # Parses a given PO file, returning true/false on # success/failure. ######################################################### def parse_po(file) content = File.open(file) { |f| f.read } # Get the stuff we want to keep from the PO header. tmp = content.match(/"Language: (.*?)\\n"/i) self.language = tmp[1].downcase if tmp tmp = content.match(/"(Plural-Forms: .*?;)\s*?plural=\s*?(.*?)\\n"/i) self.plural_forms = tmp[1] if tmp self.plural_formula = tmp[2] if tmp tmp = content.match(/"PO-Revision-Date: (.*?)\\n"/i) self.po_revision_date = tmp[1] if tmp tmp = content.match(/"Last-Translator: (.*?)\\n"/i) self.last_translator = tmp[1] if tmp # Build a catalogue of all items. Note that whitespace around blocks # is required in the PO files. content.scan(%r!((?:^#|^msgctxt).*?)(?:\z|^\n)!im) do | section | item = parse_po_section(section[0]) if item self.items.merge!(item) unless item[item.keys[0]].empty? unless item.empty? else return false end end language && plural_forms && plural_formula && po_revision_date && last_translator && items end # parse_po ######################################################### # parse_po_section( content ) # Parses a single PO section. Note that will will still # parse and accept ##BLAH## as #if groups; they just # won't be used. We'll get the information live from # the English header instead of trying to store meta- # data in the PO/POT. ######################################################### def parse_po_section( content ) # Maybe this is a bit of overkill, but it's easy to extend # if we want to capture more PO stuff in the future. map = [ [ :START, :COMMENT, :SET_COMMENT, :START ], [ :START, :IFGROUP, :SET_GROUP, :START ], [ :START, :NEW_ITEM, :SET_INIT, :CONTINUE ], [ :START, :OTHER, :NOOP, :START ], [ :START, :EMPTY, :NOOP, :START ], [ :CONTINUE, :COMMENT, :ERROR, nil ], [ :CONTINUE, :IFGROUP, :ERROR, nil ], [ :CONTINUE, :NEW_ITEM, :SET_FINAL, :CONTINUE ], [ :CONTINUE, :EMPTY, :SET_FINAL, :START ], [ :CONTINUE, :OTHER, :ADD_TO, :CONTINUE ], ].collect { |item| [:STATE, :CONDITION, :ACTION, :NEXT].zip(item).to_h } current_label = nil current_comment = nil current_if_group = nil current_cases = {} # 'case' => string state = :START buffer = '' item = '' content << "\n\n" # ensure that we have a final transition. content.each_line do |line| # Determine the input condition input = :OTHER input = :EMPTY if line == "\n" input = :COMMENT if line.start_with?('#.') input = :IFGROUP if line[/^#\..*##.*##/] input = :NEW_ITEM if line.start_with?('msgctxt', 'msgid', 'msgstr') # Find our current state-input pair map.each do | transition | if transition[:STATE] == state && transition[:CONDITION] == input case transition[:ACTION] when :SET_INIT regex = line[/".*"/] buffer = regex unless regex == '""' item = line[/^(.*?)\s/, 1] when :ADD_TO buffer << "\n#{line[/".*"/]}" when :SET_FINAL if item == 'msgctxt' current_label = buffer.tr('"', '') elsif item == 'msgstr' current_cases['0'] = buffer elsif item.start_with?('msgstr') subscript = item.match(/msgstr\[(.*)\]/)[1] current_cases[subscript] = buffer end buffer = '' regex = line[/".*"/] buffer = regex unless regex == '""' item = line[/^(.*?)\s/, 1] when :SET_COMMENT current_comment = line.match(/#\.\s*(.*?)$/)[1] when :SET_GROUP current_if_group = line.match(/##(.*)##/)[1] when :ERROR @@log.error "#{__method__}: Could NOT parse part of the PO file. Aborting!\n" @@log.error "#{__method__}: Last known label was \"#{current_label}\".\n" return nil else # consume, other end state = transition[:NEXT] break end # if end # do end # content.each # We have some nice local vars but let's put these into a hash # just like PoHeader file uses: # :keyword => { '#' => { :comment, :if_group, :case, :string } } # We will also reject items that have no string value. result = {} if current_label current_label = current_label.to_sym result[current_label] = {} current_cases.each do | key, value | unless value == '' result[current_label][key] = {} result[current_label][key][:comment] = current_comment result[current_label][key][:if_group] = current_if_group result[current_label][key][:case] = key result[current_label][key][:string] = value end end end result end # parse_po_section end # class PoPoFile ############################################################################# # class PoHeaderFile # This class contains information about a parsed header file. ############################################################################# class PoHeaderFile include PoConvertModule attr_accessor :lang_name attr_accessor :items #:keyword => { '#' => { :comment, :if_group, :case, :string } } attr_accessor :plural_count attr_accessor :plural_form ######################################################### # initialize ######################################################### def initialize( file = nil ) @source_file = nil # File path of the header file @lang_name = nil # Name of the languageDictionary instance in C. @items = nil @plural_count = 0 @plural_form = nil self.source_file = file if file end ######################################################### # property source_file ######################################################### def source_file @source_file end def source_file=( value ) @source_file = nil unless value @@log.error "#{__method__}: A source file must be specified." return end unless value && %w[.h].include?(File.extname(value)) @@log.error "#{__method__}: Source file must be a *.h file." return end unless value && File.exists?(value) @@log.error "#{__method__}: Source file #{value} not found." return end @@log.info "#{__method__}: Source file #{value} will be used." if parse_header( value ) @source_file = value else @@log.error "#{__method__}: Source file #{value} was not able to be parsed properly." end end ######################################################### # parse_header( file ) # Parses a given header file and returns the language # plural count, form, name, and a hash of strings: # # We don't want to set instance variables directly. ######################################################### def parse_header(file) self.plural_count = 0 self.plural_form = nil self.lang_name = nil self.items = {} content = File.open(file) { |f| f.read } # Get the plural form data from the correct location in the header. # These will be written to the header area of the PO/POT file. match = content.match(%r!^static uint whichPluralForm.*?\{.*?/\* Plural-Forms: nplurals=(.*?);.*?\*/.*return (.*?;).*?\}!m) if match self.plural_count = match[1] self.plural_form = match[2] else @@log.error "#{__method__}: Could not determine the plural form. Something wrong with source file?" return false end # The language name is used for file names and setting PO information. match = content.match(/^static languageDefinition (.*) =.*$/) if match self.lang_name = match[1] else @@log.error "#{__method__}: Could not determine the language name. Something wrong with source file?" return false end # Build a catalogue of all items. content.scan(%r!^\s*\{(?:/\* (.*?) \*/)?\s*(.*?),\s*(.*?),\s*(.*?)\s*\},?!m) do | comment, key, num_case, string | l_key = key.to_sym self.items[l_key] = {} unless items.has_key?(l_key) self.items[l_key][num_case] = {} self.items[l_key][num_case][:comment] = comment self.items[l_key][num_case][:case] = num_case self.items[l_key][num_case][:if_group] = nil tmp = '' string.each_line { |line| tmp << line.lstrip } self.items[l_key][num_case][:string] = tmp end if !self.items || self.items.empty? @@log.error "#{__method__}: Could not match language contents. Something wrong with source file?" self.items = {} return false end # Post-process things that are in #if blocks. This second pass is still # simpler than building a state machine to process the file line by line. # We'll have to group this hash by :if_group when we write it out, and # store it in a special developer comment in the PO file. content.scan(%r!^#if (.*?)#endif!m) do | found_block | found_block[0].scan(%r!^\s*\{(?:/\* .*? \*/)?\s*(.*?),\s*.*?,\s*.*?\s*\},?!m) do | item | self.items[item[0].to_sym].each_value do | plural | plural[:if_group] = found_block[0].lines[0].rstrip end end end true end end # class PoHeaderFile ############################################################################# # class PoConverter # The class abstracts the tidy command line executable and provides its # services within Ruby. ############################################################################# class PoConverter include PoConvertModule attr_accessor :emacs_footer ######################################################### # initialize ######################################################### def initialize @po_locale = nil # The locale to use to generate PO files. @known_locales = {} # The locales we know about. @emacs_footer = false # Indicates whether or not to add emacs instructions. end ######################################################### # property po_locale # The locale to use when generating msginit PO files. # Returns nil if the set locale is invalid. ######################################################### def po_locale @po_locale end def po_locale=(value) proposed_locale = value # Is the locale something we recognize? unless known_locales.has_key?(proposed_locale.to_sym) if known_locales.has_key?(proposed_locale[0..2].to_sym) proposed_locale = proposed_locale[0..2] else proposed_locale = '' # not nil! We still use this flag! end end if proposed_locale @@log.info "#{__method__}: Will use #{proposed_locale} as locale." else @@log.error "#{__method__}: Cannot set locale #{proposed_locale}." @@log.error "#{__method__}: We will still generate a PO file but be sure to edit the header manually." end @po_locale = proposed_locale end ######################################################### # property known_locales # A hash of known locales. ######################################################### def known_locales if @known_locales.empty? [ [ 'ja', 'Japanese', 'nplurals=1; plural=0;' ], [ 'vi', 'Vietnamese', 'nplurals=1; plural=0;' ], [ 'ko', 'Korean', 'nplurals=1; plural=0;' ], [ 'en', 'English', 'nplurals=2; plural=(n != 1);' ], [ 'de', 'German', 'nplurals=2; plural=(n != 1);' ], [ 'nl', 'Dutch', 'nplurals=2; plural=(n != 1);' ], [ 'sv', 'Swedish', 'nplurals=2; plural=(n != 1);' ], [ 'da', 'Danish', 'nplurals=2; plural=(n != 1);' ], [ 'no', 'Norwegian', 'nplurals=2; plural=(n != 1);' ], [ 'nb', 'Norwegian Bokmal', 'nplurals=2; plural=(n != 1);' ], [ 'nn', 'Norwegian Nynorsk', 'nplurals=2; plural=(n != 1);' ], [ 'fo', 'Faroese', 'nplurals=2; plural=(n != 1);' ], [ 'es', 'Spanish', 'nplurals=2; plural=(n != 1);' ], [ 'pt', 'Portuguese', 'nplurals=2; plural=(n != 1);' ], [ 'it', 'Italian', 'nplurals=2; plural=(n != 1);' ], [ 'bg', 'Bulgarian', 'nplurals=2; plural=(n != 1);' ], [ 'el', 'Greek', 'nplurals=2; plural=(n != 1);' ], [ 'fi', 'Finnish', 'nplurals=2; plural=(n != 1);' ], [ 'et', 'Estonian', 'nplurals=2; plural=(n != 1);' ], [ 'he', 'Hebrew', 'nplurals=2; plural=(n != 1);' ], [ 'eo', 'Esperanto', 'nplurals=2; plural=(n != 1);' ], [ 'hu', 'Hungarian', 'nplurals=2; plural=(n != 1);' ], [ 'tr', 'Turkish', 'nplurals=2; plural=(n != 1);' ], [ 'pt_BR', 'Brazilian', 'nplurals=2; plural=(n > 1);' ], [ 'fr', 'French', 'nplurals=2; plural=(n > 1);' ], [ 'lv', 'Latvian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n != 0 ? 1 : 2);' ], [ 'ga', 'Irish', 'nplurals=3; plural=n==1 ? 0 : n==2 ? 1 : 2;' ], [ 'ro', 'Romanian', 'nplurals=3; plural=n==1 ? 0 : (n==0 || (n%100 > 0 && n%100 < 20)) ? 1 : 2;' ], [ 'lt', 'Lithuanian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'ru', 'Russian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'uk', 'Ukrainian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'be', 'Belarusian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'sr', 'Serbian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'hr', 'Croatian', 'nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'cs', 'Czech', 'nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;' ], [ 'sk', 'Slovak', 'nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;' ], [ 'pl', 'Polish', 'nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);' ], [ 'sl', 'Slovenian', 'nplurals=4; plural=(n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3);' ] ].each do | array_item | key = array_item[0].to_sym lang = array_item[1] plural_form = array_item[2] @known_locales[key] = {} @known_locales[key][:lang] = lang @known_locales[key][:plural_form] = plural_form end end @known_locales end ######################################################### # property english_header? # Indicates whether or not the default en header file # can be found. ######################################################### def english_header? result = File.exists?(@@default_en) if result @@log.info "#{__method__}: Default English was found at #{@@default_en}" else @@log.error "#{__method__}: Cannot find the default English localization file. Check the value of @@default_en in this script." end result end ######################################################### # property header_template? # Indicates whether or not the header template file # can be found and hasn't been tampered with. ######################################################### def header_template? result = File.exists?(@@header_template) if result @@log.info "#{__method__}: The header template was found at #{@@header_template}" else @@log.error "#{__method__}: Cannot find the header teamplate file. Check the value of @@header_template in this script." return false end digest = Digest::SHA256.file(@@header_template.to_s) result = digest == @@header_digest unless result @@log.error "#{__method__}: Did someone tamper with the header template? If you" @@log.error "#{__method__}: meant to change the template and know what you're doing," @@log.error "#{__method__}: then the new digest is:" @@log.error "#{__method__}: #{digest}" end result end ######################################################### # property safe_backup_name( file ) # Determines a safe name for a backup file name. ######################################################### def safe_backup_name( filename ) file = filename orig_file = filename index = 1 while File.exists?(file) index = index + 1 file = "#{File.basename(orig_file, '.*')}-#{index}#{File.extname(orig_file)}" end file end ######################################################### # convert_to_po( source_file_h, base_file ) # Perform the conversion for xgettext, msginit, and # msgunfmt. ######################################################### def convert_to_po( source_file_h = nil, base_file = nil ) return false unless english_header? # What we actually do depends on what was setup for us. # If source_file_h is nil and po_locale is nil, we are xgettext. # If source_file_h is nil and we have po_locale, we are msginit. # If we have a source_file_h, then we are msgunfmt. action = :msgunfmt action = :msginit if source_file_h.nil? && po_locale action = :xgettext if source_file_h.nil? && po_locale.nil? # Untranslated Items form the basis of all output. For convenience # we can use some non-English strings as an "untranslated" string, # e.g., to help translate regional formats. lang_en = PoHeaderFile.new(@@default_en) return false unless lang_en.source_file untranslated_items = lang_en.items.clone if base_file lang_base = PoHeaderFile.new(base_file) return false unless lang_base.source_file untranslated_items.merge!(lang_base.items) end # We will use lang_source if we have a source_file_h, i.e., msgunfmt, # as the source for translated strings. if source_file_h lang_source = PoHeaderFile.new(source_file_h) return false unless lang_source.source_file else lang_source = nil end # The information in the PO header can come from a few different sources # depending on what we're doing. header_plural_forms = nil header_pot_line = nil header_translate_to = nil if action == :xgettext header_plural_forms = "Plural-Forms: nplurals=#{lang_en.plural_count}; plural=#{lang_en.plural_form}" header_pot_line = "POT-Creation-Date: #{DateTime.now.strftime('%Y-%m-%d %H:%M:%S')}" header_translate_to = lang_en.items[:TIDY_LANGUAGE]['0'][:string].tr('"', '') end if action == :msginit header_plural_forms = "Plural-Forms: #{known_locales[po_locale.to_sym][:plural_form]}" header_pot_line = "PO-Revision-Date: #{DateTime.now.strftime('%Y-%m-%d %H:%M:%S')}" header_translate_to = po_locale end if action == :msgunfmt header_plural_forms = "Plural-Forms: nplurals=#{lang_source.plural_count}; plural=#{lang_source.plural_form}" header_pot_line = "PO-Revision-Date: #{DateTime.now.strftime('%Y-%m-%d %H:%M:%S')}" header_translate_to = lang_source.items[:TIDY_LANGUAGE]['0'][:string].tr('"', '') end header_plural_count = header_plural_forms.match(/nplurals=(.*?);/i)[1].to_i - 1 # We'll use this closure to perform a repetitive task in the report. item_output = lambda do | label, string | result = '' if string.lines.count > 1 result << "#{label} \"\"\n" result << "#{string}\n" else result << "#{label} #{string}\n" end result end report = <<-HEREDOC msgid "" msgstr "" "Content-Type: text/plain; charset=UTF-8\\n" "Language: #{header_translate_to}\\n" "#{header_plural_forms}\\n" "X-Generator: HTML Tidy #{File.basename($0)}\\n" "Project-Id-Version: \\n" "#{header_pot_line}\\n" "Last-Translator: #{ENV['USER']}#{ENV['USERNAME']}\\n" "Language-Team: \\n" HEREDOC untranslated_items.delete(:TIDY_LANGUAGE) untranslated_items.delete(:TIDY_MESSAGE_TYPE_LAST) untranslated_items.each do |key, value| if value['0'][:comment] value['0'][:comment].each_line { |line| report << "#. #{line.strip}\n"} end if %w($u $s $d).any? { | find | value['0'][:string].include?(find) } report << "#, c-format\n" end report << "msgctxt \"#{key.to_s}\"\n" # Handle the untranslated strings, with the possibility that there # are two forms. PO/POT is English-based and supports only a singular # and plural form. value.each_value do | subitem | label = subitem[:case] == '0' ? 'msgid' : 'msgid_plural' report << item_output.(label, subitem[:string]) end # Handle translated strings, with the possibility that there # are multiple plural forms for them. en_is_singular = value.count == 1 if lang_source && lang_source.items[key] # Print translated strings. if en_is_singular report << item_output.( 'msgstr', lang_source.items[key]['0'][:string]) else # Print available plural forms and write blanks for the rest. (0..header_plural_count).each do |i| if lang_source.items[key].has_key?(i.to_s) report << item_output.( "msgstr[#{i}]", lang_source.items[key][i.to_s][:string]) else report << "msgstr[#{i}] \"\"\n" end end end else # Print empty translated strings. if en_is_singular report << "msgstr \"\"\n" else (0..header_plural_count).each do |i| report << "msgstr[#{i}] \"\"\n" end end end report << "\n" end # do if emacs_footer report << <<-HEREDOC # Local Variables: # mode: po # eval: (add-hook 'po-subedit-mode-hook '(lambda () (setq fill-column 78))) # End: HEREDOC end output_file = action == :xgettext ? 'tidy.pot' : "language_#{header_translate_to}.po" if File.exists?(output_file) File.rename(output_file, safe_backup_name(output_file)) end File.open(output_file, 'w') { |f| f.write(report) } @@log.info "#{__method__}: Results written to #{output_file}" puts "Wrote a new file to #{File.expand_path(output_file)}" true end # convert_to_po ######################################################### # convert_to_h( file, base-file ) # Perform the conversion. ######################################################### def convert_to_h( file, base_file ) po_content = PoPoFile.new(file) return false unless po_content.source_file && english_header? && header_template? # We will use English to ensure that no English strings are # included in the translation. lang_en = PoHeaderFile.new(@@default_en) return false unless lang_en.source_file filter_items = lang_en.items.clone # We will also filter out items that are already the same # in the base language, in order to keep Tidy small. It's # actually possible to miss some English strings if, for # some reason, the PO has English strings that the base # language does not, but severity * likelihood == unimportant. if base_file lang_base = PoHeaderFile.new(base_file) return false unless lang_base.source_file filter_items.merge!(lang_base.items) end # We will hard code these into the generated file. filter_items.delete(:TIDY_LANGUAGE) filter_items.delete(:TIDY_MESSAGE_TYPE_LAST) # Eliminate PO items if they match inherited items (in the filter), or # if they're not included in English (i.e., entries not used by Tidy). # We are comparing _complete entries_ right here, with the PO as the # official source. Therefore all plurals are accounted for, #IF groups, # and comments. po_content.items.reject! do |key, value| ( (filter_items.has_key?(key) && filter_items[key] == value) ) || !filter_items.has_key?(key) end # #if groups and comments: # We need to know which translated items belong in #if groups. Since we # don't store this metadata in the PO, find out which #if groups they # belong to from the original language_en.h. # Additionally we will only use comments from language_en.h. Besides # preventing us from having to format them, we ensure that only the # canonical comments are put into the H file in the event of changes. po_content.items.each do |key, value| value.each_value do |item_entry| item_entry[:if_group] = lang_en.items[key]['0'][:if_group] item_entry[:comment] = lang_en.items[key]['0'][:comment] end end # Gather some information to format this nicely. longest_key = 22 # length of TIDY_MESSAGE_TYPE_LAST. longest_value = 10 # reasonable default in case no single-line strings are found. po_content.items.each do |key, value| longest_key = key.length if key.length > longest_key value.each_value do |value_inner| length = value_inner[:string].length longest_value = length if length > longest_value && !value_inner[:string].start_with?("\n") end end # Manually build the first line with the proper language code. report_body = " {/* Specify the ll or ll_cc language code here. */\n" report_body << " #{'TIDY_LANGUAGE,'.ljust(longest_key+2)}0, \"#{po_content.language}\"\n" report_body << " },\n" # Generate the main header body. Although it's a machine-generated # document we still care that it's pretty-printed and readable. In # this respect we have four output formats: single line values; # single line values with developer comment; multiline values; and # multiline values with developer comment. if_group = nil po_content.items.each do |item_key, item_value| item_group = item_value[item_value.keys[0]][:if_group] unless item_group == if_group # The current if grouping has changed. unless if_group.nil? # Close current group. report_body << "#endif /* #{if_group} */\n\n" end if_group = item_group unless if_group.nil? # Open new group. report_body << "\n#if #{if_group}\n" end end # Handle each entry individually. item_value.each_value do |entry_value| if entry_value[:string].start_with?("\n") # Format a multiline value. if entry_value[:comment] report_body << " {/* #{entry_value[:comment]} */\n" report_body << " #{(item_key.to_s + ',').ljust(longest_key+2)}#{entry_value[:case]}," else report_body << " { #{(item_key.to_s + ',').ljust(longest_key+2)}#{entry_value[:case]}," end entry_value[:string].lines.each do |line| report_body << " #{line}" end report_body << "\n },\n" else # Format a single line value. if entry_value[:comment] report_body << " {/* #{entry_value[:comment]} */\n" report_body << " #{(item_key.to_s + ',').ljust(longest_key+2)}#{entry_value[:case]}, #{entry_value[:string]}\n" report_body << " },\n" else # known issue: ljust doesn't work for certain unicode characters, so no pretty-printing, e.g., Chinese. report_body << " { #{(item_key.to_s + ',').ljust(longest_key+2)}#{entry_value[:case]}, #{entry_value[:string].ljust(longest_value+2)} },\n" end end end end # po_content.items.each # Close off current if_group if any, because there will # not be another state change to do so. unless if_group.nil? report_body << "#endif /* #{if_group} */\n" end # Force the final closing line manually; can't count on PO. We # could add this to the template, but let's give it the same # pretty-printing as the other items. report_body_last = " {/* This MUST be present and last. */\n" report_body_last << " #{'TIDY_MESSAGE_TYPE_LAST,'.ljust(longest_key+2)}0, NULL\n" report_body_last << " }\n" # We are going to use an external ERB template to build the report file. # Although it's trivial to hard-code all of the required text into this # method directly, it will be more convenient to keep an external file # synchronized with changes to language_en.h if we make changes. header_file = File.open(@@header_template) { |f| f.read } report = ERB.new(header_file).result(binding) # will use in-context vars. # Save output_file = "language_#{po_content.language}.h" if File.exists?(output_file) File.rename(output_file, safe_backup_name(output_file)) end File.open(output_file, 'w') do |f| f.write "\uFEFF" # MSVC requires a BOM. f.write(report) end @@log.info "#{__method__}: Results written to #{output_file}" puts "Wrote a new header file to #{File.expand_path(output_file)}" true end # convert_to_h end # class PoConverter ############################################################################# # class PoConvertCLI # This class provides handlers for CLI parameters. ############################################################################# class PoConvertCLI < Thor include PoConvertModule class_option :verbose, :type => :boolean, :desc => 'Provides verbose debug output.', :aliases => '-v' class_option :debug, :type => :boolean, :desc => 'Provides really, really verbose debug output.', :aliases => '-d' ######################################################### # initialize ######################################################### def initialize(*args) super end ######################################################### # help # Override the default help in order to better describe # what we're doing. ######################################################### def help(*args) if args.count == 0 puts <<-HEREDOC This script (#{File.basename($0)}) converts back and forth between GNU gettext PO files preferred by localizers and Tidy's language header H files which ensure that Tidy stays small and cross-platform. All output files are placed into the current working directory using a file name appropriate to the operation being performed. Complete Help: -------------- HEREDOC end super end # help ######################################################### # xgettext # See long_desc ######################################################### desc 'xgettext [input_file.h]', 'Creates a POT file for use with HTML Tidy.' option :emacs, :type => :boolean, :desc => 'Appends emacs editor information to the end of the PO file.', :aliases => '-e' long_desc <<-LONG_DESC Creates an empty POT from Tidy's native English header, or optionally from a specified language using English as a backup source. POT files have no translated strings; they are empty templates. Use case: in the Tidy localization process there's probably no real reason to use this unless you prefer to set the header manually compared to how #{File.basename($0)} msginit does it. LONG_DESC def xgettext(input_file = nil) converter = PoConverter.new converter.emacs_footer = options[:emacs] set_options if converter.convert_to_po( nil, input_file) puts 'xgettext exited without errors.' else puts 'xgettext exited with errors. Consider using the --verbose or --debug options.' exit 1 end end # xgettext ######################################################### # msginit # See long_desc ######################################################### option :locale, :type => :string, :desc => 'Specifies the locale in ll or ll_CC format for the generated PO file.', :aliases => '-l' option :emacs, :type => :boolean, :desc => 'Appends emacs editor information to the end of the PO file.', :aliases => '-e' desc 'msginit [input_file.h]', 'Creates a blank PO file for the current or specified locale.' long_desc <<-LONG_DESC Creates an empty PO file and tries to set locale-specific header information. The untranslated strings are Tidy's native English strings unless [input_file.h] is specified (English will still be used as a backup). This tool will try to use the current locale to generate the PO file unless the --locale option specifies a different locale. Use case: use this to generate a PO file for a language that Tidy has not yet been translated to. LONG_DESC def msginit(input_file = nil) converter = PoConverter.new converter.emacs_footer = options[:emacs] set_options unless (converter.po_locale = options[:locale] ? options[:locale] : I18n.locale) puts 'msginit exited with errors. Consider using the --verbose or --debug options.' exit 1 end if converter.convert_to_po(nil, input_file) puts 'msginit exited without errors.' else puts 'msginit exited with errors. Consider using the --verbose or --debug options.' exit 1 end end # msginit ######################################################### # msgunfmt # See long_desc ######################################################### option :baselang, :type => :string, :desc => 'Specifies a base language from which to include untranslated strings.', :aliases => '-b' option :emacs, :type => :boolean, :desc => 'Appends emacs editor information to the end of the PO file.', :aliases => '-e' desc 'msgunfmt ', 'Converts an existing Tidy header H file to PO format.' long_desc <<-LONG_DESC Converts an existing Tidy header H file to a PO file using the locale specified in the H file. Specifying is required. The resulting file will consist of English original strings, the translated strings from the header, and blank translated strings if not specified in the header. You can use the --baselang option to gather the untranslated strings from a different header file. This may be useful for translators that want to implement a region-specific localization, for example, translating `es` to `es_mx`. Use case: create a PO file from an existing Tidy header H file using a combination of languages that are suitable to you. LONG_DESC def msgunfmt(input_file = nil) converter = PoConverter.new converter.emacs_footer = options[:emacs] set_options if converter.convert_to_po( input_file, options[:baselang] ) puts 'msgunfmt exited without errors.' else puts 'msgunfmt exited with errors. Consider using the --verbose or --debug options.' exit 1 end end # msgunfmt ######################################################### # msgfmt # See long_desc ######################################################### option :baselang, :type => :string, :desc => 'Specifies a base language from which to exclude translated strings.', :aliases => '-b' desc 'msgfmt ', 'Creates a Tidy header H file from the given PO file.' long_desc <<-LONG_DESC Creates a Tidy header H file from the specified PO file, which is a required argument. You can use the --baselang option to exclude already translated strings from an inherited base language. This will help keep Tidy's library and executable size to a minimum. For example if you wish to generate a header for es_mx (which uses es as its base language), then you should specify the "--baselang es" option. This will ensure that the generated header includes only strings that are unique to es_mx. Use case: Tidy can only build H files, and so this command will convert PO files to something useful. LONG_DESC def msgfmt(input_file) converter = PoConverter.new set_options if converter.convert_to_h( input_file, options[:baselang] ) puts 'msgfmt exited without errors.' else puts 'msgfmt exited with errors. Consider using the --verbose or --debug options.' exit 1 end end # msgfmt ######################################################### # set_options # Handles command line options. ######################################################### protected def set_options PoConvertModule::log_level = Logger::WARN if options[:verbose] PoConvertModule::log_level = Logger::DEBUG if options[:debug] end # set_options end # PoConvertCLI end # PoConvertModule ########################################################### # Main ########################################################### PoConvertModule::PoConvertCLI.start(ARGV)