webtry: Simplify template construction.

experimental/webtry/webtry.go

 package main
 
 import (
         "bytes"
         "crypto/md5"
         "database/sql"
         "encoding/base64"
         "encoding/binary"
         "encoding/json"
         "flag"
@@ skipping 128 matching lines @@
         rand.Seed(time.Now().UnixNano())
 
         // Change the current working directory to the directory of the executable.
         var err error
         cwd, err := filepath.Abs(filepath.Dir(os.Args[0]))
         if err != nil {
                 log.Fatal(err)
         }
         os.Chdir(cwd)
 
-        codeTemplate, err = template.ParseFiles(filepath.Join(cwd, "templates/template.cpp"))
-        if err != nil {
-                panic(err)
-        }
-        gypTemplate, err = template.ParseFiles(filepath.Join(cwd, "templates/template.gyp"))
-        if err != nil {
-                panic(err)
-        }
-        indexTemplate, err = htemplate.ParseFiles(
+        codeTemplate = template.Must(template.ParseFiles(filepath.Join(cwd, "templates/template.cpp")))
+        gypTemplate = template.Must(template.ParseFiles(filepath.Join(cwd, "templates/template.gyp")))
+        indexTemplate = htemplate.Must(htemplate.ParseFiles(
                 filepath.Join(cwd, "templates/index.html"),
                 filepath.Join(cwd, "templates/titlebar.html"),
                 filepath.Join(cwd, "templates/sidebar.html"),
                 filepath.Join(cwd, "templates/content.html"),
                 filepath.Join(cwd, "templates/headercommon.html"),
                 filepath.Join(cwd, "templates/footercommon.html"),
-        )
-        if err != nil {
-                panic(err)
-        }
-        iframeTemplate, err = htemplate.ParseFiles(
+        ))
+        iframeTemplate = htemplate.Must(htemplate.ParseFiles(
                 filepath.Join(cwd, "templates/iframe.html"),
                 filepath.Join(cwd, "templates/content.html"),
                 filepath.Join(cwd, "templates/headercommon.html"),
                 filepath.Join(cwd, "templates/footercommon.html"),
-        )
-        if err != nil {
-                panic(err)
-        }
-        recentTemplate, err = htemplate.ParseFiles(
+        ))
+        recentTemplate = htemplate.Must(htemplate.ParseFiles(
                 filepath.Join(cwd, "templates/recent.html"),
                 filepath.Join(cwd, "templates/titlebar.html"),
                 filepath.Join(cwd, "templates/sidebar.html"),
                 filepath.Join(cwd, "templates/headercommon.html"),
                 filepath.Join(cwd, "templates/footercommon.html"),
-        )
-        if err != nil {
-                panic(err)
-        }
-        workspaceTemplate, err = htemplate.ParseFiles(
+        ))
+        workspaceTemplate = htemplate.Must(htemplate.ParseFiles(
                 filepath.Join(cwd, "templates/workspace.html"),
                 filepath.Join(cwd, "templates/titlebar.html"),
                 filepath.Join(cwd, "templates/sidebar.html"),
                 filepath.Join(cwd, "templates/content.html"),
                 filepath.Join(cwd, "templates/headercommon.html"),
                 filepath.Join(cwd, "templates/footercommon.html"),
-        )
-        if err != nil {
-                panic(err)
-        }
+        ))
 
         // The git command returns output of the format:
         //
         //   f672cead70404080a991ebfb86c38316a4589b23 2014-04-27 19:21:51 +0000
         //
         logOutput, err := doCmd(`git log --format=%H%x20%ai HEAD^..HEAD`)
         if err != nil {
                 panic(err)
         }
         logInfo := strings.Split(logOutput, " ")
@@ skipping 695 matching lines @@
         http.HandleFunc("/sources/", autogzip.HandleFunc(sourcesHandler))
 
         // Resources are served directly
         // TODO add support for caching/etags/gzip
         http.Handle("/res/", autogzip.Handle(http.FileServer(http.Dir("./"))))
 
         // TODO Break out /c/ as it's own handler.
         http.HandleFunc("/", autogzip.HandleFunc(mainHandler))
         log.Fatal(http.ListenAndServe(*port, nil))
 }