func main() {
listenAddr, baseDir, rawPatch := processArgs()
nav, err := navpatch.NewNavigator(baseDir, rawPatch)
if err != nil {
internal.ErrorExit(err)
}
listener, err := net.Listen("tcp", listenAddr)
if err != nil {
internal.ErrorExit("starting server:", err)
}
fmt.Println("Serving at " + listener.Addr().String())
log.Fatal(http.Serve(listener, nav))
}
func (gc gitCommandUnix) patchNavigator(repoURL, oldCommit, newCommit string, feedback func(string)) (*navpatch.Navigator, func(), error) {
repoPath, err := gc.copyRepo(repoURL, feedback)
if err != nil {
return nil, nil, err
}
cleanupNav := func() {
os.RemoveAll(repoPath)
}
cmd := exec.Command("git", "diff", "--no-color", oldCommit, newCommit)
cmd.Dir = repoPath
rawPatch, err := cmd.CombinedOutput()
if err != nil {
cleanupNav()
return nil, nil, fmt.Errorf("diffing: %v; git output: %v", err, string(rawPatch))
}
feedback("Checking out base commit...")
cmd = exec.Command("git", "stash")
cmd.Dir = repoPath
cmd.Run()
cmd = exec.Command("git", "checkout", oldCommit)
cmd.Dir = repoPath
out, err := cmd.CombinedOutput()
if err != nil {
cleanupNav()
return nil, nil, fmt.Errorf("checking out %s: %v; git output: %v", oldCommit, err, string(out))
}
cmd = exec.Command("git", "stash", "pop")
cmd.Dir = repoPath
cmd.Run()
feedback("Generating patch visualization...")
nav, err := navpatch.NewNavigator(repoPath, rawPatch)
if err != nil {
cleanupNav()
return nil, nil, err
}
return nav, cleanupNav, nil
}