func loadAuth()

in git-codereview/api.go [153:206]

• 45 lines of code
• 20 McCabe index (conditional complexity)

func loadAuth() {
	if auth.user != "" || auth.cookieName != "" {
		return
	}

	loadGerritOrigin()

	// First look in Git's http.cookiefile, which is where Gerrit
	// now tells users to store this information.
	if cookieFile, _ := trimErr(cmdOutputErr("git", "config", "--path", "--get-urlmatch", "http.cookiefile", auth.url)); cookieFile != "" {
		data, _ := ioutil.ReadFile(cookieFile)
		maxMatch := -1
		for _, line := range lines(string(data)) {
			f := strings.Split(line, "\t")
			if len(f) >= 7 && (f[0] == auth.host || strings.HasPrefix(f[0], ".") && strings.HasSuffix(auth.host, f[0])) {
				if len(f[0]) > maxMatch {
					auth.cookieName = f[5]
					auth.cookieValue = f[6]
					maxMatch = len(f[0])
				}
			}
		}
		if maxMatch > 0 {
			return
		}
	}

	// If not there, then look in $HOME/.netrc, which is where Gerrit
	// used to tell users to store the information, until the passwords
	// got so long that old versions of curl couldn't handle them.
	netrc := netrcName()
	homeDir := testHomeDir
	if homeDir == "" {
		usr, err := user.Current()
		if err != nil {
			dief("failed to get current user home directory to look for %q: %v", netrc, err)
		}
		homeDir = usr.HomeDir
	}
	data, _ := ioutil.ReadFile(filepath.Join(homeDir, netrc))
	for _, line := range lines(string(data)) {
		if i := strings.Index(line, "#"); i >= 0 {
			line = line[:i]
		}
		f := strings.Fields(line)
		if len(f) >= 6 && f[0] == "machine" && f[1] == auth.host && f[2] == "login" && f[4] == "password" {
			auth.user = f[3]
			auth.password = f[5]
			return
		}
	}

	dief("cannot find authentication info for %s", auth.host)
}