Fix various bugs (#35177)

* Fix #35144
* Fix #35117
* Fix https://github.com/go-gitea/gitea/issues/35054#issuecomment-3131793977
* Fix #35136

modules/git/commit_submodule_file.go

@@ -42,7 +42,7 @@ func (sf *CommitSubmoduleFile) getWebLinkInTargetRepo(ctx context.Context, moreL
 		return nil
 	}
 	if strings.HasPrefix(sf.refURL, "../") {
-		targetLink := path.Join(sf.repoLink, path.Dir(sf.fullPath), sf.refURL)
+		targetLink := path.Join(sf.repoLink, sf.refURL)
 		return &SubmoduleWebLink{RepoWebLink: targetLink, CommitWebLink: targetLink + moreLinkPath}
 	}
 	if !sf.parsed {

modules/git/commit_submodule_file_test.go

@@ -32,7 +32,7 @@ func TestCommitSubmoduleLink(t *testing.T) {
 		assert.Equal(t, "/subpath/user/repo", wl.RepoWebLink)
 		assert.Equal(t, "/subpath/user/repo/tree/aaaa", wl.CommitWebLink)
 
-		sf = NewCommitSubmoduleFile("/subpath/any/repo-home-link", "dir/submodule", "../../../user/repo", "aaaa")
+		sf = NewCommitSubmoduleFile("/subpath/any/repo-home-link", "dir/submodule", "../../user/repo", "aaaa")
 		wl = sf.SubmoduleWebLinkCompare(t.Context(), "1111", "2222")
 		assert.Equal(t, "/subpath/user/repo", wl.RepoWebLink)
 		assert.Equal(t, "/subpath/user/repo/compare/1111...2222", wl.CommitWebLink)

modules/git/utils.go

@@ -11,6 +11,8 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+
+	"code.gitea.io/gitea/modules/util"
 )
 
 // ObjectCache provides thread-safe cache operations.
@@ -106,3 +108,16 @@ func HashFilePathForWebUI(s string) string {
 	_, _ = h.Write([]byte(s))
 	return hex.EncodeToString(h.Sum(nil))
 }
+
+func SplitCommitTitleBody(commitMessage string, titleRuneLimit int) (title, body string) {
+	title, body, _ = strings.Cut(commitMessage, "\n")
+	title, title2 := util.EllipsisTruncateRunes(title, titleRuneLimit)
+	if title2 != "" {
+		if body == "" {
+			body = title2
+		} else {
+			body = title2 + "\n" + body
+		}
+	}
+	return title, body
+}

modules/git/utils_test.go

@@ -15,3 +15,17 @@ func TestHashFilePathForWebUI(t *testing.T) {
 		HashFilePathForWebUI("foobar"),
 	)
 }
+
+func TestSplitCommitTitleBody(t *testing.T) {
+	title, body := SplitCommitTitleBody("啊bcdefg", 4)
+	assert.Equal(t, "啊…", title)
+	assert.Equal(t, "…bcdefg", body)
+
+	title, body = SplitCommitTitleBody("abcdefg\n1234567", 4)
+	assert.Equal(t, "a…", title)
+	assert.Equal(t, "…bcdefg\n1234567", body)
+
+	title, body = SplitCommitTitleBody("abcdefg\n1234567", 100)
+	assert.Equal(t, "abcdefg", title)
+	assert.Equal(t, "1234567", body)
+}

modules/util/truncate.go

@@ -19,7 +19,7 @@ func IsLikelyEllipsisLeftPart(s string) bool {
 	return strings.HasSuffix(s, utf8Ellipsis) || strings.HasSuffix(s, asciiEllipsis)
 }
 
-func ellipsisGuessDisplayWidth(r rune) int {
+func ellipsisDisplayGuessWidth(r rune) int {
 	// To make the truncated string as long as possible,
 	// CJK/emoji chars are considered as 2-ASCII width but not 3-4 bytes width.
 	// Here we only make the best guess (better than counting them in bytes),
@@ -48,13 +48,17 @@ func ellipsisGuessDisplayWidth(r rune) int {
 // It appends "…" or "..." at the end of truncated string.
 // It guarantees the length of the returned runes doesn't exceed the limit.
 func EllipsisDisplayString(str string, limit int) string {
-	s, _, _, _ := ellipsisDisplayString(str, limit)
+	s, _, _, _ := ellipsisDisplayString(str, limit, ellipsisDisplayGuessWidth)
 	return s
 }
 
 // EllipsisDisplayStringX works like EllipsisDisplayString while it also returns the right part
 func EllipsisDisplayStringX(str string, limit int) (left, right string) {
-	left, offset, truncated, encounterInvalid := ellipsisDisplayString(str, limit)
+	return ellipsisDisplayStringX(str, limit, ellipsisDisplayGuessWidth)
+}
+
+func ellipsisDisplayStringX(str string, limit int, widthGuess func(rune) int) (left, right string) {
+	left, offset, truncated, encounterInvalid := ellipsisDisplayString(str, limit, widthGuess)
 	if truncated {
 		right = str[offset:]
 		r, _ := utf8.DecodeRune(UnsafeStringToBytes(right))
@@ -68,7 +72,7 @@ func EllipsisDisplayStringX(str string, limit int) (left, right string) {
 	return left, right
 }
 
-func ellipsisDisplayString(str string, limit int) (res string, offset int, truncated, encounterInvalid bool) {
+func ellipsisDisplayString(str string, limit int, widthGuess func(rune) int) (res string, offset int, truncated, encounterInvalid bool) {
 	if len(str) <= limit {
 		return str, len(str), false, false
 	}
@@ -81,7 +85,7 @@ func ellipsisDisplayString(str string, limit int) (res string, offset int, trunc
 	for i, r := range str {
 		encounterInvalid = encounterInvalid || r == utf8.RuneError
 		pos = i
-		runeWidth := ellipsisGuessDisplayWidth(r)
+		runeWidth := widthGuess(r)
 		if used+runeWidth+3 > limit {
 			break
 		}
@@ -96,7 +100,7 @@ func ellipsisDisplayString(str string, limit int) (res string, offset int, trunc
 			if nextCnt >= 4 {
 				break
 			}
-			nextWidth += ellipsisGuessDisplayWidth(r)
+			nextWidth += widthGuess(r)
 			nextCnt++
 		}
 		if nextCnt <= 3 && used+nextWidth <= limit {
@@ -114,6 +118,10 @@ func ellipsisDisplayString(str string, limit int) (res string, offset int, trunc
 	return str[:offset] + ellipsis, offset, true, encounterInvalid
 }
 
+func EllipsisTruncateRunes(str string, limit int) (left, right string) {
+	return ellipsisDisplayStringX(str, limit, func(r rune) int { return 1 })
+}
+
 // TruncateRunes returns a truncated string with given rune limit,
 // it returns input string if its rune length doesn't exceed the limit.
 func TruncateRunes(str string, limit int) string {

modules/util/truncate_test.go

@@ -29,7 +29,7 @@ func TestEllipsisGuessDisplayWidth(t *testing.T) {
 		t.Run(c.r, func(t *testing.T) {
 			w := 0
 			for _, r := range c.r {
-				w += ellipsisGuessDisplayWidth(r)
+				w += ellipsisDisplayGuessWidth(r)
 			}
 			assert.Equal(t, c.want, w, "hex=% x", []byte(c.r))
 		})

routers/web/feed/branch.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/services/context"
 
 	"github.com/gorilla/feeds"
@@ -15,10 +16,14 @@ import (
 
 // ShowBranchFeed shows tags and/or releases on the repo as RSS / Atom feed
 func ShowBranchFeed(ctx *context.Context, repo *repo.Repository, formatType string) {
-	commits, err := ctx.Repo.Commit.CommitsByRange(0, 10, "", "", "")
-	if err != nil {
-		ctx.ServerError("ShowBranchFeed", err)
-		return
+	var commits []*git.Commit
+	var err error
+	if ctx.Repo.Commit != nil {
+		commits, err = ctx.Repo.Commit.CommitsByRange(0, 10, "", "", "")
+		if err != nil {
+			ctx.ServerError("ShowBranchFeed", err)
+			return
+		}
 	}
 
 	title := "Latest commits for branch " + ctx.Repo.BranchName

services/repository/files/tree.go

@@ -90,11 +90,8 @@ func GetTreeBySHA(ctx context.Context, repo *repo_model.Repository, gitRepo *git
 	if rangeStart >= len(entries) {
 		return tree, nil
 	}
-	var rangeEnd int
-	if len(entries) > perPage {
-		tree.Truncated = true
-	}
-	rangeEnd = min(rangeStart+perPage, len(entries))
+	rangeEnd := min(rangeStart+perPage, len(entries))
+	tree.Truncated = rangeEnd < len(entries)
 	tree.Entries = make([]api.GitEntry, rangeEnd-rangeStart)
 	for e := rangeStart; e < rangeEnd; e++ {
 		i := e - rangeStart

services/repository/push.go

@@ -402,16 +402,11 @@ func pushUpdateAddTags(ctx context.Context, repo *repo_model.Repository, gitRepo
 		}
 
 		rel, has := relMap[lowerTag]
-
-		parts := strings.SplitN(tag.Message, "\n", 2)
-		note := ""
-		if len(parts) > 1 {
-			note = parts[1]
-		}
+		title, note := git.SplitCommitTitleBody(tag.Message, 255)
 		if !has {
 			rel = &repo_model.Release{
 				RepoID:       repo.ID,
-				Title:        parts[0],
+				Title:        title,
 				TagName:      tags[i],
 				LowerTagName: lowerTag,
 				Target:       "",
@@ -430,7 +425,7 @@ func pushUpdateAddTags(ctx context.Context, repo *repo_model.Repository, gitRepo
 			rel.Sha1 = commit.ID.String()
 			rel.CreatedUnix = timeutil.TimeStamp(createdAt.Unix())
 			if rel.IsTag {
-				rel.Title = parts[0]
+				rel.Title = title
 				rel.Note = note
 			} else {
 				rel.IsDraft = false

tests/integration/api_repo_git_trees_test.go

@@ -11,7 +11,11 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestAPIReposGitTrees(t *testing.T) {
@@ -32,13 +36,21 @@ func TestAPIReposGitTrees(t *testing.T) {
 	token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeReadRepository)
 
 	// Test a public repo that anyone can GET the tree of
-	for _, ref := range [...]string{
-		"master",     // Branch
-		repo1TreeSHA, // Tree SHA
-	} {
-		req := NewRequestf(t, "GET", "/api/v1/repos/%s/%s/git/trees/%s", user2.Name, repo1.Name, ref)
-		MakeRequest(t, req, http.StatusOK)
-	}
+	_ = MakeRequest(t, NewRequest(t, "GET", "/api/v1/repos/user2/repo1/git/trees/master"), http.StatusOK)
+
+	resp := MakeRequest(t, NewRequest(t, "GET", "/api/v1/repos/user2/repo1/git/trees/62fb502a7172d4453f0322a2cc85bddffa57f07a?per_page=1"), http.StatusOK)
+	var respGitTree api.GitTreeResponse
+	DecodeJSON(t, resp, &respGitTree)
+	assert.True(t, respGitTree.Truncated)
+	require.Len(t, respGitTree.Entries, 1)
+	assert.Equal(t, "File-WoW", respGitTree.Entries[0].Path)
+
+	resp = MakeRequest(t, NewRequest(t, "GET", "/api/v1/repos/user2/repo1/git/trees/62fb502a7172d4453f0322a2cc85bddffa57f07a?page=2&per_page=1"), http.StatusOK)
+	respGitTree = api.GitTreeResponse{}
+	DecodeJSON(t, resp, &respGitTree)
+	assert.False(t, respGitTree.Truncated)
+	require.Len(t, respGitTree.Entries, 1)
+	assert.Equal(t, "README.md", respGitTree.Entries[0].Path)
 
 	// Tests a private repo with no token so will fail
 	for _, ref := range [...]string{

tests/integration/empty_repo_test.go

@@ -75,6 +75,11 @@ func TestEmptyRepoAddFile(t *testing.T) {
 	req = NewRequest(t, "GET", "/api/v1/repos/user30/empty/raw/main/README.md").AddTokenAuth(token)
 	session.MakeRequest(t, req, http.StatusNotFound)
 
+	// test feed
+	req = NewRequest(t, "GET", "/user30/empty/rss/branch/main/README.md").AddTokenAuth(token).SetHeader("Accept", "application/rss+xml")
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	assert.Contains(t, resp.Body.String(), "</rss>")
+
 	// create a new file
 	req = NewRequest(t, "GET", "/user30/empty/_new/"+setting.Repository.DefaultBranch)
 	resp = session.MakeRequest(t, req, http.StatusOK)