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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package vcweb
import (
"log"
"net/http"
"net/http/cgi"
"os/exec"
"runtime"
"sync"
)
type gitHandler struct {
once sync.Once
gitPath string
gitPathErr error
}
func (h *gitHandler) Available() bool {
if runtime.GOOS == "plan9" {
// The Git command is usually not the real Git on Plan 9.
// See https://golang.org/issues/29640.
return false
}
h.once.Do(func() {
h.gitPath, h.gitPathErr = exec.LookPath("git")
})
return h.gitPathErr == nil
}
func (h *gitHandler) Handler(dir string, env []string, logger *log.Logger) (http.Handler, error) {
if !h.Available() {
return nil, ServerNotInstalledError{name: "git"}
}
handler := &cgi.Handler{
Path: h.gitPath,
Logger: logger,
Args: []string{"http-backend"},
Dir: dir,
Env: append(env[:len(env):len(env)],
"GIT_PROJECT_ROOT="+dir,
"GIT_HTTP_EXPORT_ALL=1",
),
}
return handler, nil
}
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