Font-Awesome/extractor/extract.rb

icons = {}
glyphs = {}

sass_lines = File.open('../sass/font-awesome.sass').readlines
svg_lines = File.open('../font/fontawesome-webfont.svg').readlines

index = 0
while index < sass_lines.length
    line = sass_lines[index]
    if line.start_with? '.icon'
        colon_index = line.index ':'
        icon_name = line[1 .. colon_index - 1]
        index += 1
        line = sass_lines[index]
        icon_code = line[13 .. 16]
        icons[icon_name] = icon_code
        #puts "#{icon_name}: #{icon_code}"
    end
    index += 1
end

index = 0
while index < svg_lines.length
    line = svg_lines[index]
    d_index = line.index 'd="'
    if line.start_with? '<glyph unicode="&#x' and d_index != nil
        icon_code = line[19.. 22]
        start_index = d_index + 3
        icon_glyph = line[start_index .. line.length - 6]
        glyphs[icon_code] = icon_glyph
        #puts "#{icon_code}: '#{icon_glyph}'"
    end
    index += 1
end

# icons.each_pair do |icon_name, icon_code|
#     puts "#{icon_name}: #{glyphs[icon_code]}"
# end

requested_icon = ARGV[0]
requested_glyph = glyphs[icons[requested_icon]]
blank_svg_content = File.open('empty.svg').read
output_svg = blank_svg_content.sub '###INSERTGLYPH###', requested_glyph
File.open("#{requested_icon}.svg", 'w') {|out_svg| out_svg.write(output_svg) }