fontHelper-objectivec.rb

 # Copyright (c) 2015, Pablo Alcalde. All rights reserved.
 # Licensed under the MIT license <http://opensource.org/licenses/MIT>
 
 # Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 # documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 # the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 # to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
 # The above copyright notice and this permission notice shall be included in all copies or substantial portions
 # of the Software.
 
 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 # TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 # CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
class FontHelper
	attr_accessor :unicodes, :fontName, :saveDirectory

	def initialize (ttfPath, saveDirectory)
		@saveDirectory = saveDirectory
		@unicodes = `otfinfo -u #{ttfPath}`.split("\n")
		puts @unicodes
		@fontName = `otfinfo --info #{ttfPath}`.split[1]
		puts "\nFontName = #{@fontName} \n"
	end

	def unicodesArray()
		unicodesStringArray = "@["
		@unicodes.each_with_index do |unicode, index|
			unicodeSplitted = unicode.split(" ")
			if !self.isValidUnicodeCharacter(unicodeSplitted[0]) then next end
			if unicodeSplitted.length > 1
				unicodeValue = unicodeSplitted[0]
				unicodeValue = unicodeValue.sub('uni', 'u')
				unicodesStringArray += '@"\\' + unicodeValue + '"'
				if index < @unicodes.length-1 then unicodesStringArray += ',' end
			end
		end
		unicodesStringArray += '];'
		return unicodesStringArray
	end

	def createImplementationFile()
		template = File.open(File.dirname(__FILE__) + '/' + "template.m")
		newFile = File.new(saveDirectory + '/' + "NSString+#{@fontName}.m", 'w');
		template.each do |line|
			line = self.replaceFontNameForLine(line)
			if line.include? '<<UNICODES_ARRAY>>'
				line = line.sub('<<UNICODES_ARRAY>>', self.unicodesArray() + "\n")
			end
			newFile.write(line)
		end
		puts "\nCreated implementation file:\n"
		puts newFile.path + "\n\n"
	end

	def unicodesEnums()
		unicodesString = ''
		@unicodes.each_with_index do |unicode, index|
			unicodeSplitted = unicode.split(" ")
			if !self.isValidUnicodeCharacter(unicodeSplitted[0]) then next end
			unicodeName = unicodeSplitted[2] ? unicodeSplitted[2] : "" 
			unicodesString += '    ' + @fontName + '_' + unicodeName
			if index < @unicodes.length-1 then unicodesString += ',' + "\n" end
		end
		return unicodesString
	end

	def createHeaderFile()
		template = File.open(File.dirname(__FILE__) + '/' +  "template.h")
		newFile = File.new(saveDirectory + '/' + "NSString+#{@fontName}.h", 'w');
		template.each do |line|
			line = self.replaceFontNameForLine(line)
			if line.include? '<<UNICODES_ENUM>>'
				line = line.sub('<<UNICODES_ENUM>>', self.unicodesEnums() + "\n")
			end
		newFile.write(line)
		end
		puts "\nCreated header file: \n"
		puts newFile.path + "\n\n"
	end

	def replaceFontNameForLine(line)
		newLine = line
		if line.include? '<<FONTNAME>>'	
			newLine = line.gsub('<<FONTNAME>>', @fontName) 
		end
		return newLine
	end

	def isValidUnicodeCharacter(uniChar) 
		case uniChar
		when 'uni0001' then return false
		when 'uni0020' then return false
		when 'uniFFFF' then return false
		when 'uniF500' then return false
		else return true
		end
	end
end 

# Main

# Lets check if user already has the brew package lcdf-typetools which provides the otfinfo library used by this script.
otfInfoInstalledVersion = `otfinfo --version; true`
if otfInfoInstalledVersion.split[3].nil? || otfInfoInstalledVersion.split[3] < "2.104" 
	puts "You don't have otfinfo 2.104 installed"
	brewInstalled = !`brew --version; true`.include?('command not found')
	if brewInstalled
		puts "Trying to get otfinfo from homebrew, installing package lcdf-typetools.."
		`brew install lcdf-typetools`
	else 
		puts "Install homebrew and run this script again"
		exit
	end
end

ttfPath = nil 
saveDirectory = nil
if ARGV[0] && File.file?(ARGV[0]) then ttfPath = ARGV[0] end
if ARGV[1] && File.directory?(ARGV[1]) then saveDirectory = ARGV[1].chomp("/") end

if ttfPath && saveDirectory
	fontHelper =  FontHelper.new(ttfPath, saveDirectory)
	fontHelper.createHeaderFile
	fontHelper.createImplementationFile
else 
	if ttfPath.nil?
		puts "\nError: A valid path to a .ttf file must be provided as a first argument\n\n"
	elsif saveDirectory.nil?
		puts "\nError: A valid path to a directory where generated files will be saved must be provided as a second argument\n\n"
	end
exit
end