diff vendor/gems/coderay-0.9.7/lib/coderay/scanners/diff.rb @ 210:0579821a129a

Update to Redmine trunk rev 4802

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/gems/coderay-0.9.7/lib/coderay/scanners/diff.rb	Tue Feb 08 13:51:46 2011 +0000
@@ -0,0 +1,110 @@
+module CodeRay
+module Scanners
+  
+  class Diff < Scanner
+    
+    register_for :diff
+    title 'diff output'
+    
+    def scan_tokens tokens, options
+      
+      line_kind = nil
+      state = :initial
+      
+      until eos?
+        kind = match = nil
+        
+        if match = scan(/\n/)
+          if line_kind
+            tokens << [:end_line, line_kind]
+            line_kind = nil
+          end
+          tokens << [match, :space]
+          next
+        end
+        
+        case state
+        
+        when :initial
+          if match = scan(/--- |\+\+\+ |=+|_+/)
+            tokens << [:begin_line, line_kind = :head]
+            tokens << [match, :head]
+            next unless match = scan(/.+/)
+            kind = :plain
+          elsif match = scan(/Index: |Property changes on: /)
+            tokens << [:begin_line, line_kind = :head]
+            tokens << [match, :head]
+            next unless match = scan(/.+/)
+            kind = :plain
+          elsif match = scan(/Added: /)
+            tokens << [:begin_line, line_kind = :head]
+            tokens << [match, :head]
+            next unless match = scan(/.+/)
+            kind = :plain
+            state = :added
+          elsif match = scan(/\\ /)
+            tokens << [:begin_line, line_kind = :change]
+            tokens << [match, :change]
+            next unless match = scan(/.+/)
+            kind = :plain
+          elsif match = scan(/@@(?>[^@\n]*)@@/)
+            if check(/\n|$/)
+              tokens << [:begin_line, line_kind = :change]
+            else
+              tokens << [:open, :change]
+            end
+            tokens << [match[0,2], :change]
+            tokens << [match[2...-2], :plain]
+            tokens << [match[-2,2], :change]
+            tokens << [:close, :change] unless line_kind
+            next unless match = scan(/.+/)
+            kind = :plain
+          elsif match = scan(/\+/)
+            tokens << [:begin_line, line_kind = :insert]
+            tokens << [match, :insert]
+            next unless match = scan(/.+/)
+            kind = :plain
+          elsif match = scan(/-/)
+            tokens << [:begin_line, line_kind = :delete]
+            tokens << [match, :delete]
+            next unless match = scan(/.+/)
+            kind = :plain
+          elsif scan(/ .*/)
+            kind = :comment
+          elsif scan(/.+/)
+            tokens << [:begin_line, line_kind = :comment]
+            kind = :plain
+          else
+            raise_inspect 'else case rached'
+          end
+        
+        when :added
+          if match = scan(/   \+/)
+            tokens << [:begin_line, line_kind = :insert]
+            tokens << [match, :insert]
+            next unless match = scan(/.+/)
+            kind = :plain
+          else
+            state = :initial
+            next
+          end
+        end
+        
+        match ||= matched
+        if $CODERAY_DEBUG and not kind
+          raise_inspect 'Error token %p in line %d' %
+            [[match, kind], line], tokens
+        end
+        raise_inspect 'Empty token', tokens unless match
+        
+        tokens << [match, kind]
+      end
+      
+      tokens << [:end_line, line_kind] if line_kind
+      tokens
+    end
+    
+  end
+  
+end
+end