Feature/dependency pinning and update automation (#5451)

* * handle local flag
* add managerfactory handling for local flag
* add shortName handling for local flag
* add dot git file handling for local flag
* add tests

* fix normal listing

* add ParseGitRepository function, add viper, add testing for utils

* add latest tag logic, add auto pinning and auto fetching

* makke gorepomod list works with --local

* make pinning works with local flag, enable auto update on fork and non-fork repo

* fix: refactor to pass linter

* refactor code and fix comments

* edit README

* refactor code to pass linting

* refactor code

* refactor code and enable patch branch label

* ru add license

* fbackward compatibility for unpin

cmd/gorepomod/internal/utils/utils.go

@@ -4,8 +4,10 @@
 package utils
 
 import (
+	"fmt"
 	"log"
 	"os"
+	"regexp"
 	"strings"
 )
 
@@ -45,3 +47,38 @@ func SliceContains(slice []string, target string) bool {
 	}
 	return false
 }
+
+// Receive git remote url as input and produce string containing git repository name
+// e.g. kustomize, myrepo/kustomize
+func ParseGitRepositoryPath(urlString string) string {
+	var d []string = getURLStringArray(urlString)
+	protocol := d[0]
+
+	var repoPath string
+
+	// TODO(antoooks): Confirm if we should handle other formats not commonly supported by Github
+	switch protocol {
+	// ssh protocol, e.g. git@github.com:path/repo.git
+	case "git":
+		repoPath = strings.Join(d[2:len(d)-1], "/") + "/" + d[3][:len(d[3])-4]
+	// https protocol, e.g. https://github.com/path/repo.git
+	case "https":
+		repoPath = strings.Join(d[2:], "/")
+		repoPath = repoPath[:len(repoPath)-4]
+	// unsupported format
+	default:
+		_ = fmt.Errorf("protocol format is not supported: %s", protocol)
+		return ""
+	}
+
+	return d[1] + "/" + repoPath
+}
+
+// Extract array of string from urlString
+func getURLStringArray(urlString string) []string {
+	// Supported git regex based on URI allowed regex as defined under RFC3986
+	const rfc3986 = `[A-Za-z0-9][A-Za-z0-9+.-]*`
+	re := regexp.MustCompile(rfc3986)
+	var u []string = re.FindAllString(urlString, -1)
+	return u
+}