Add bin and edit workflow

bin/gems/afm-0.2.2/lib/afm.rb

@@ -0,0 +1,105 @@
+module AFM
+  
+  ISO_LATIN1_ENCODING = %w(
+   .notdef .notdef .notdef .notdef .notdef .notdef .notdef .notdef
+   .notdef .notdef .notdef .notdef .notdef .notdef .notdef .notdef
+   .notdef .notdef .notdef .notdef .notdef .notdef .notdef .notdef
+   .notdef .notdef .notdef .notdef .notdef .notdef .notdef .notdef space
+   exclam quotedbl numbersign dollar percent ampersand quoteright
+   parenleft parenright asterisk plus comma minus period slash zero one
+   two three four five six seven eight nine colon semicolon less equal
+   greater question at A B C D E F G H I J K L M N O P Q R S
+   T U V W X Y Z bracketleft backslash bracketright asciicircum
+   underscore quoteleft a b c d e f g h i j k l m n o p q r s
+   t u v w x y z braceleft bar braceright asciitilde .notdef .notdef
+   .notdef .notdef .notdef .notdef .notdef .notdef .notdef .notdef
+   .notdef .notdef .notdef .notdef .notdef .notdef .notdef dotlessi grave
+   acute circumflex tilde macron breve dotaccent dieresis .notdef ring
+   cedilla .notdef hungarumlaut ogonek caron space exclamdown cent
+   sterling currency yen brokenbar section dieresis copyright ordfeminine
+   guillemotleft logicalnot hyphen registered macron degree plusminus
+   twosuperior threesuperior acute mu paragraph periodcentered cedilla
+   onesuperior ordmasculine guillemotright onequarter onehalf threequarters
+   questiondown Agrave Aacute Acircumflex Atilde Adieresis Aring AE
+   Ccedilla Egrave Eacute Ecircumflex Edieresis Igrave Iacute Icircumflex
+   Idieresis Eth Ntilde Ograve Oacute Ocircumflex Otilde Odieresis
+   multiply Oslash Ugrave Uacute Ucircumflex Udieresis Yacute Thorn
+   germandbls agrave aacute acircumflex atilde adieresis aring ae
+   ccedilla egrave eacute ecircumflex edieresis igrave iacute icircumflex
+   idieresis eth ntilde ograve oacute ocircumflex otilde odieresis divide
+   oslash ugrave uacute ucircumflex udieresis yacute thorn ydieresis
+  )
+  
+  
+  class Font
+    attr_reader :metadata, :char_metrics, :char_metrics_by_code, :kern_pairs
+    
+    # Loading a Font Metrics file by absolute path (no automatic font path resolution)
+    def initialize(filename)
+      @metadata = {}
+      @char_metrics = {}
+      @char_metrics_by_code = {}
+      @kern_pairs = []
+      File.open(filename) do |file|
+        mode = :meta
+        file.each_line do |line|
+          case(line)
+          when /^StartFontMetrics/ ; mode = :meta
+          when /^StartCharMetrics/ ; mode = :char_metrics
+          when /^EndCharMetrics/ ; mode = :meta
+          when /^StartKernData/ ; mode = :kern_data
+          when /^StartKernPairs/ ; mode = :kern_pairs
+          when /^EndKernPairs/ ; mode = :kern_data
+          when /^EndKernData/ ; mode = :meta
+          else
+            case(mode)
+            when :meta
+              if match = line.match(/^([\w]+) (.*)$/)
+                @metadata[match[1]] = match[2]
+              end
+            when :char_metrics
+              metrics = {}
+              metrics[:charcode] = match[1].to_i if match = line.match(/C (-?\d+) *?;/)
+              metrics[:wx] = match[1].to_i if match = line.match(/WX (-?\d+) *?;/)
+              metrics[:name] = match[1] if match = line.match(/N ([.\w]+) *?;/)
+              if match = line.match(/B (-?\d+) (-?\d+) (-?\d+) (-?\d+) *?;/)
+                metrics[:boundingbox] = [match[1].to_i, match[2].to_i, match[3].to_i, match[4].to_i] 
+              end
+              @char_metrics[metrics[:name]] = metrics if metrics[:name]
+              @char_metrics_by_code[metrics[:charcode]] = metrics if metrics[:charcode] && metrics[:charcode] > 0
+            when :kern_pairs
+              if match = line.match(/^KPX ([.\w]+) ([.\w]+) (-?\d+)$/)
+                @kern_pairs << [match[1], match[2], match[3].to_i]
+              end
+            end
+          end
+        end
+      end
+    end
+    
+    # 
+    # alias for new()
+    def self.from_file(file)
+      self.new(file)
+    end
+    
+    #
+    # Get metadata by key
+    def [](key)
+      @metadata[key]
+    end
+    #
+    # Get metrics for character. Takes an integer (charcode) or
+    # a one-char string. currently works only for Latin1 strings,
+    # since we only have a chartable for the Latin1 charset so far.
+    # (shamelessly stolen from AFM.pm by Gisle Aas)
+    def metrics_for(char)
+      glyph = if (char.kind_of?(Integer))
+        ISO_LATIN1_ENCODING[char]
+      else
+        ISO_LATIN1_ENCODING[char.unpack("C*").first]
+      end
+      @char_metrics[glyph]
+    end
+  end
+end