Make submodule link work with relative path (#35034)

Fix #35033

3 files changed, 44 insertions, 27 deletions

diff --git a/modules/git/commit_submodule_file.go b/modules/git/commit_submodule_file.go
index 729401f752..5def80f3bd 100644
--- a/modules/git/commit_submodule_file.go
+++ b/modules/git/commit_submodule_file.go
@@ -6,17 +6,18 @@ package git
 
 import (
 	"context"
+	"strings"
 
 	giturl "code.gitea.io/gitea/modules/git/url"
 )
 
 // CommitSubmoduleFile represents a file with submodule type.
 type CommitSubmoduleFile struct {
-	refURL    string
-	parsedURL *giturl.RepositoryURL
-	parsed    bool
-	refID     string
-	repoLink  string
+	refURL string
+	refID  string
+
+	parsed         bool
+	targetRepoLink string
 }
 
 // NewCommitSubmoduleFile create a new submodule file
@@ -35,20 +36,27 @@ func (sf *CommitSubmoduleFile) SubmoduleWebLink(ctx context.Context, optCommitID
 	}
 	if !sf.parsed {
 		sf.parsed = true
-		parsedURL, err := giturl.ParseRepositoryURL(ctx, sf.refURL)
-		if err != nil {
-			return nil
+		if strings.HasPrefix(sf.refURL, "../") {
+			// FIXME: when handling relative path, this logic is not right. It needs to:
+			// 1. Remember the submodule's full path and its commit's repo home link
+			// 2. Resolve the relative path: targetRepoLink = path.Join(repoHomeLink, path.Dir(submoduleFullPath), refURL)
+			// Not an easy task and need to refactor related code a lot.
+			sf.targetRepoLink = sf.refURL
+		} else {
+			parsedURL, err := giturl.ParseRepositoryURL(ctx, sf.refURL)
+			if err != nil {
+				return nil
+			}
+			sf.targetRepoLink = giturl.MakeRepositoryWebLink(parsedURL)
 		}
-		sf.parsedURL = parsedURL
-		sf.repoLink = giturl.MakeRepositoryWebLink(sf.parsedURL)
 	}
 	var commitLink string
 	if len(optCommitID) == 2 {
-		commitLink = sf.repoLink + "/compare/" + optCommitID[0] + "..." + optCommitID[1]
+		commitLink = sf.targetRepoLink + "/compare/" + optCommitID[0] + "..." + optCommitID[1]
 	} else if len(optCommitID) == 1 {
-		commitLink = sf.repoLink + "/tree/" + optCommitID[0]
+		commitLink = sf.targetRepoLink + "/tree/" + optCommitID[0]
 	} else {
-		commitLink = sf.repoLink + "/tree/" + sf.refID
+		commitLink = sf.targetRepoLink + "/tree/" + sf.refID
 	}
-	return &SubmoduleWebLink{RepoWebLink: sf.repoLink, CommitWebLink: commitLink}
+	return &SubmoduleWebLink{RepoWebLink: sf.targetRepoLink, CommitWebLink: commitLink}
 }
diff --git a/modules/git/commit_submodule_file_test.go b/modules/git/commit_submodule_file_test.go
index 6581fa8712..103e55e920 100644
--- a/modules/git/commit_submodule_file_test.go
+++ b/modules/git/commit_submodule_file_test.go
@@ -10,20 +10,29 @@ import (
 )
 
 func TestCommitSubmoduleLink(t *testing.T) {
-	sf := NewCommitSubmoduleFile("git@github.com:user/repo.git", "aaaa")
+	wl := (*CommitSubmoduleFile)(nil).SubmoduleWebLink(t.Context())
+	assert.Nil(t, wl)
 
-	wl := sf.SubmoduleWebLink(t.Context())
-	assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
-	assert.Equal(t, "https://github.com/user/repo/tree/aaaa", wl.CommitWebLink)
+	t.Run("GitHubRepo", func(t *testing.T) {
+		sf := NewCommitSubmoduleFile("git@github.com:user/repo.git", "aaaa")
 
-	wl = sf.SubmoduleWebLink(t.Context(), "1111")
-	assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
-	assert.Equal(t, "https://github.com/user/repo/tree/1111", wl.CommitWebLink)
+		wl := sf.SubmoduleWebLink(t.Context())
+		assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
+		assert.Equal(t, "https://github.com/user/repo/tree/aaaa", wl.CommitWebLink)
 
-	wl = sf.SubmoduleWebLink(t.Context(), "1111", "2222")
-	assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
-	assert.Equal(t, "https://github.com/user/repo/compare/1111...2222", wl.CommitWebLink)
+		wl = sf.SubmoduleWebLink(t.Context(), "1111")
+		assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
+		assert.Equal(t, "https://github.com/user/repo/tree/1111", wl.CommitWebLink)
 
-	wl = (*CommitSubmoduleFile)(nil).SubmoduleWebLink(t.Context())
-	assert.Nil(t, wl)
+		wl = sf.SubmoduleWebLink(t.Context(), "1111", "2222")
+		assert.Equal(t, "https://github.com/user/repo", wl.RepoWebLink)
+		assert.Equal(t, "https://github.com/user/repo/compare/1111...2222", wl.CommitWebLink)
+	})
+
+	t.Run("RelativePath", func(t *testing.T) {
+		sf := NewCommitSubmoduleFile("../../user/repo", "aaaa")
+		wl := sf.SubmoduleWebLink(t.Context())
+		assert.Equal(t, "../../user/repo", wl.RepoWebLink)
+		assert.Equal(t, "../../user/repo/tree/aaaa", wl.CommitWebLink)
+	})
 }
diff --git a/web_src/css/repo/home-file-list.css b/web_src/css/repo/home-file-list.css
index f2ab052a54..6aa9e4bca3 100644
--- a/web_src/css/repo/home-file-list.css
+++ b/web_src/css/repo/home-file-list.css
@@ -71,7 +71,7 @@
 
 #repo-files-table .repo-file-cell.name .entry-name {
   flex-shrink: 1;
-  min-width: 3em;
+  min-width: 1ch; /* leave about one letter space when shrinking, need to fine tune the "shrinks" in this grid in the future */
 }
 
 @media (max-width: 767.98px) {