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92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
// Copyright 2017 Drone.IO Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package scm
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import (
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"regexp"
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"strconv"
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"strings"
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)
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// regular expression to extract the pull request number
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// from the git ref (e.g. refs/pulls/{d}/head)
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var re = regexp.MustCompile("\\d+")
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// regular expressions to test whether or not a string is
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// a sha1 or sha256 commit hash.
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var (
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sha1 = regexp.MustCompile("^([a-f0-9]{40})$")
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sha256 = regexp.MustCompile("^([a-f0-9]{64})$")
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)
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// Split splits the full repository name into segments.
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func Split(s string) (owner, name string) {
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parts := strings.SplitN(s, "/", 2)
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switch len(parts) {
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case 1:
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name = parts[0]
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case 2:
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owner = parts[0]
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name = parts[1]
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}
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return
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}
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// Join joins the repository owner and name segments to
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// create a fully qualified repository name.
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func Join(owner, name string) string {
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return owner + "/" + name
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}
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// TrimRef returns ref without the path prefix.
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func TrimRef(ref string) string {
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ref = strings.TrimPrefix(ref, "refs/heads/")
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ref = strings.TrimPrefix(ref, "refs/tags/")
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return ref
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}
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// ExpandRef returns name expanded to the fully qualified
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// reference path (e.g refs/heads/master).
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func ExpandRef(name, prefix string) string {
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prefix = strings.TrimSuffix(prefix, "/")
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if strings.HasPrefix(name, "refs/") {
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return name
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}
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return prefix + "/" + name
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}
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// ExtractPullRequest returns name extraced pull request
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// number from the reference path.
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func ExtractPullRequest(ref string) int {
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s := re.FindString(ref)
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d, _ := strconv.Atoi(s)
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return d
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}
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// IsBranch returns true if the reference path points to
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// a branch.
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func IsBranch(ref string) bool {
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return strings.HasPrefix(ref, "refs/heads/")
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}
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// IsTag returns true if the reference path points to
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// a tag object.
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func IsTag(ref string) bool {
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return strings.HasPrefix(ref, "refs/tags/")
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}
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// IsPullRequest returns true if the reference path points
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// to a pull request object.
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func IsPullRequest(ref string) bool {
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return strings.HasPrefix(ref, "refs/pull/") ||
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strings.HasPrefix(ref, "refs/pull-request/") ||
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strings.HasPrefix(ref, "refs/merge-requests/")
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}
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// IsHash returns true if the string is a commit hash.
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func IsHash(s string) bool {
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return sha1.MatchString(s) || sha256.MatchString(s)
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}
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