Adds less (CSS processor) v1.7.4 (Apache v2)

Change-Id: I364e46d395c0752df8c585a5aeab3aa9a289162c

make.go

@@ -391,7 +391,7 @@ func buildSrcPath(fromSrc string) string {
 // kept in between runs.
 func genEmbeds() error {
 	cmdName := exeName(filepath.Join(buildGoPath, "bin", "genfileembed"))
-	for _, embeds := range []string{"server/camlistored/ui", "pkg/server", "third_party/react", "third_party/glitch", "third_party/fontawesome", "app/publisher"} {
+	for _, embeds := range []string{"server/camlistored/ui", "pkg/server", "third_party/react", "third_party/less", "third_party/glitch", "third_party/fontawesome", "app/publisher"} {
 		embeds := buildSrcPath(embeds)
 		args := []string{"--output-files-stderr", embeds}
 		cmd := exec.Command(cmdName, args...)

pkg/server/ui.go

@@ -47,10 +47,11 @@ import (
 	fontawesomestatic "camlistore.org/third_party/fontawesome"
 	glitchstatic "camlistore.org/third_party/glitch"
 	reactstatic "camlistore.org/third_party/react"
+        lessstatic "camlistore.org/third_party/less"
 )
 
 var (
-	staticFilePattern = regexp.MustCompile(`^([a-zA-Z0-9\-\_]+\.(html|js|css|png|jpg|gif|svg))$`)
+	staticFilePattern = regexp.MustCompile(`^([a-zA-Z0-9\-\_\.]+\.(html|js|css|png|jpg|gif|svg))$`)
 	identOrDotPattern = regexp.MustCompile(`^[a-zA-Z\_]+(\.[a-zA-Z\_]+)*$`)
 
 	// Download URL suffix:
@@ -62,6 +63,7 @@ var (
 	thumbnailPattern   = regexp.MustCompile(`^thumbnail/([^/]+)(/.*)?$`)
 	treePattern        = regexp.MustCompile(`^tree/([^/]+)(/.*)?$`)
 	closurePattern     = regexp.MustCompile(`^closure/(([^/]+)(/.*)?)$`)
+        lessPattern        = regexp.MustCompile(`^less/(.+)$`)
 	reactPattern       = regexp.MustCompile(`^react/(.+)$`)
 	fontawesomePattern = regexp.MustCompile(`^fontawesome/(.+)$`)
 	glitchPattern      = regexp.MustCompile(`^glitch/(.+)$`)
@@ -101,6 +103,7 @@ type UIHandler struct {
 	uiDir string // if sourceRoot != "", this is sourceRoot+"/server/camlistored/ui"
 
 	closureHandler         http.Handler
+        fileLessHandler        http.Handler
 	fileReactHandler       http.Handler
 	fileFontawesomeHandler http.Handler
 	fileGlitchHandler      http.Handler
@@ -440,6 +443,8 @@ func (ui *UIHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 		ui.serveQR(rw, req)
 	case getSuffixMatches(req, closurePattern):
 		ui.serveClosure(rw, req)
+        case getSuffixMatches(req, lessPattern):
+		ui.serveFromDiskOrStatic(rw, req, lessPattern, ui.fileLessHandler, lessstatic.Files)
 	case getSuffixMatches(req, reactPattern):
 		ui.serveFromDiskOrStatic(rw, req, reactPattern, ui.fileReactHandler, reactstatic.Files)
 	case getSuffixMatches(req, glitchPattern):

third_party/less/fileembed.go

@@ -0,0 +1,28 @@
+/*
+Copyright 2014 The Camlistore Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/*
+Package less provides the LESS CSS framework/rewriter.
+
+See http://lesscss.org/
+
+#fileembed pattern .*\.js$
+*/
+package less
+
+import "camlistore.org/pkg/fileembed"
+
+var Files = &fileembed.Files{}