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-rw-r--r--modules/git/submodule.go119
1 files changed, 119 insertions, 0 deletions
diff --git a/modules/git/submodule.go b/modules/git/submodule.go
new file mode 100644
index 0000000..b99c815
--- /dev/null
+++ b/modules/git/submodule.go
@@ -0,0 +1,119 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package git
+
+import (
+ "fmt"
+ "net"
+ "net/url"
+ "path"
+ "regexp"
+ "strings"
+)
+
+var scpSyntax = regexp.MustCompile(`^([a-zA-Z0-9_]+@)?([a-zA-Z0-9._-]+):(.*)$`)
+
+// SubModule submodule is a reference on git repository
+type SubModule struct {
+ Name string
+ URL string
+}
+
+// SubModuleFile represents a file with submodule type.
+type SubModuleFile struct {
+ *Commit
+
+ refURL string
+ refID string
+}
+
+// NewSubModuleFile create a new submodule file
+func NewSubModuleFile(c *Commit, refURL, refID string) *SubModuleFile {
+ return &SubModuleFile{
+ Commit: c,
+ refURL: refURL,
+ refID: refID,
+ }
+}
+
+func getRefURL(refURL, urlPrefix, repoFullName, sshDomain string) string {
+ if refURL == "" {
+ return ""
+ }
+
+ refURI := strings.TrimSuffix(refURL, ".git")
+
+ prefixURL, _ := url.Parse(urlPrefix)
+ urlPrefixHostname, _, err := net.SplitHostPort(prefixURL.Host)
+ if err != nil {
+ urlPrefixHostname = prefixURL.Host
+ }
+
+ urlPrefix = strings.TrimSuffix(urlPrefix, "/")
+
+ // FIXME: Need to consider branch - which will require changes in modules/git/commit.go:GetSubModules
+ // Relative url prefix check (according to git submodule documentation)
+ if strings.HasPrefix(refURI, "./") || strings.HasPrefix(refURI, "../") {
+ return urlPrefix + path.Clean(path.Join("/", repoFullName, refURI))
+ }
+
+ if !strings.Contains(refURI, "://") {
+ // scp style syntax which contains *no* port number after the : (and is not parsed by net/url)
+ // ex: git@try.gitea.io:go-gitea/gitea
+ match := scpSyntax.FindAllStringSubmatch(refURI, -1)
+ if len(match) > 0 {
+ m := match[0]
+ refHostname := m[2]
+ pth := m[3]
+
+ if !strings.HasPrefix(pth, "/") {
+ pth = "/" + pth
+ }
+
+ if urlPrefixHostname == refHostname || refHostname == sshDomain {
+ return urlPrefix + path.Clean(path.Join("/", pth))
+ }
+ return "http://" + refHostname + pth
+ }
+ }
+
+ ref, err := url.Parse(refURI)
+ if err != nil {
+ return ""
+ }
+
+ refHostname, _, err := net.SplitHostPort(ref.Host)
+ if err != nil {
+ refHostname = ref.Host
+ }
+
+ supportedSchemes := []string{"http", "https", "git", "ssh", "git+ssh"}
+
+ for _, scheme := range supportedSchemes {
+ if ref.Scheme == scheme {
+ if ref.Scheme == "http" || ref.Scheme == "https" {
+ if len(ref.User.Username()) > 0 {
+ return ref.Scheme + "://" + fmt.Sprintf("%v", ref.User) + "@" + ref.Host + ref.Path
+ }
+ return ref.Scheme + "://" + ref.Host + ref.Path
+ } else if urlPrefixHostname == refHostname || refHostname == sshDomain {
+ return urlPrefix + path.Clean(path.Join("/", ref.Path))
+ }
+ return "http://" + refHostname + ref.Path
+ }
+ }
+
+ return ""
+}
+
+// RefURL guesses and returns reference URL.
+func (sf *SubModuleFile) RefURL(urlPrefix, repoFullName, sshDomain string) string {
+ return getRefURL(sf.refURL, urlPrefix, repoFullName, sshDomain)
+}
+
+// RefID returns reference ID.
+func (sf *SubModuleFile) RefID() string {
+ return sf.refID
+}