Merge branch 'master' into specflow

lib/linguist/generated.rb

@@ -59,10 +59,13 @@ module Linguist
       godeps? ||
       generated_by_zephir? ||
       minified_files? ||
+      source_map? ||
       compiled_coffeescript? ||
       generated_parser? ||
       generated_net_docfile? ||
       generated_postscript? ||
+      compiled_cython_file? ||
+      generated_protocol_buffer_go? ||
       generated_protocol_buffer? ||
       generated_jni_header? ||
       vcr_cassette?
@@ -95,6 +98,20 @@ module Linguist
       end
     end
 
+    # Internal: Is the blob a generated source map?
+    #
+    # Source Maps usually have .css.map or .js.map extensions. In case they
+    # are not following the name convention, detect them based on the content.
+    #
+    # Returns true or false.
+    def source_map?
+      return false unless extname.downcase == '.map'
+
+      name =~ /(\.css|\.js)\.map$/i ||                 # Name convention
+      lines[0] =~ /^{"version":\d+,/ ||                # Revision 2 and later begin with the version number
+      lines[0] =~ /^\/\*\* Begin line maps\. \*\*\/{/  # Revision 1 begins with a magic comment
+    end
+
     # Internal: Is the blob of JS generated by CoffeeScript?
     #
     # CoffeeScript is meant to output JS that would be difficult to
@@ -214,6 +231,13 @@ module Linguist
         creator.include?("ImageMagick")
     end
 
+    def generated_protocol_buffer_go?
+      return false unless extname == '.go'
+      return false unless lines.count > 1
+
+      return lines[0].include?("Code generated by protoc-gen-go")
+    end
+
     # Internal: Is the blob a C++, Java or Python source file generated by the
     # Protocol Buffer compiler?
     #
@@ -274,5 +298,18 @@ module Linguist
       # VCR Cassettes have "recorded_with: VCR" in the second last line.
       return lines[-2].include?("recorded_with: VCR")
     end
+
+    # Internal: Is this a compiled C/C++ file from Cython?
+    #
+    # Cython-compiled C/C++ files typically contain:
+    # /* Generated by Cython x.x.x on ... */
+    # on the first line.
+    #
+    # Return true or false
+    def compiled_cython_file?
+      return false unless ['.c', '.cpp'].include? extname
+      return false unless lines.count > 1
+      return lines[0].include?("Generated by Cython")
+    end
   end
 end