add commit compare functionality

1 files changed, 63 insertions, 2 deletions

diff --git a/routers/repo/commit.go b/routers/repo/commit.go
index 6320123b40..54acc85b3e 100644
--- a/routers/repo/commit.go
+++ b/routers/repo/commit.go
@@ -114,9 +114,9 @@ func Diff(ctx *middleware.Context) {
 
 	commit := ctx.Repo.Commit
 
-	diff, err := models.GetDiff(models.RepoPath(userName, repoName), commitId)
+	diff, err := models.GetDiffCommit(models.RepoPath(userName, repoName), commitId)
 	if err != nil {
-		ctx.Handle(404, "GetDiff", err)
+		ctx.Handle(404, "GetDiffCommit", err)
 		return
 	}
 
@@ -162,6 +162,67 @@ func Diff(ctx *middleware.Context) {
 	ctx.HTML(200, DIFF)
 }
 
+func CompareDiff(ctx *middleware.Context) {
+	ctx.Data["IsRepoToolbarCommits"] = true
+	ctx.Data["IsDiffCompare"] = true
+	userName := ctx.Repo.Owner.Name
+	repoName := ctx.Repo.Repository.Name
+	beforeCommitId := ctx.Params(":before")
+	afterCommitId := ctx.Params(":after")
+
+	commit, err := ctx.Repo.GitRepo.GetCommit(afterCommitId)
+	if err != nil {
+		ctx.Handle(404, "GetCommit", err)
+		return
+	}
+
+	diff, err := models.GetDiffRange(models.RepoPath(userName, repoName), beforeCommitId, afterCommitId)
+	if err != nil {
+		ctx.Handle(404, "GetDiffRange", err)
+		return
+	}
+
+	isImageFile := func(name string) bool {
+		blob, err := commit.GetBlobByPath(name)
+		if err != nil {
+			return false
+		}
+
+		dataRc, err := blob.Data()
+		if err != nil {
+			return false
+		}
+		buf := make([]byte, 1024)
+		n, _ := dataRc.Read(buf)
+		if n > 0 {
+			buf = buf[:n]
+		}
+		_, isImage := base.IsImageFile(buf)
+		return isImage
+	}
+
+	commits, err := commit.CommitsBeforeUntil(beforeCommitId)
+	if err != nil {
+		ctx.Handle(500, "CommitsBeforeUntil", err)
+		return
+	}
+
+	ctx.Data["Commits"] = commits
+	ctx.Data["CommitCount"] = commits.Len()
+	ctx.Data["BeforeCommitId"] = beforeCommitId
+	ctx.Data["AfterCommitId"] = afterCommitId
+	ctx.Data["Username"] = userName
+	ctx.Data["Reponame"] = repoName
+	ctx.Data["IsImageFile"] = isImageFile
+	ctx.Data["Title"] = "Comparing " + base.ShortSha(beforeCommitId) + "..." + base.ShortSha(afterCommitId) + " · " + userName + "/" + repoName
+	ctx.Data["Commit"] = commit
+	ctx.Data["Diff"] = diff
+	ctx.Data["DiffNotAvailable"] = diff.NumFiles() == 0
+	ctx.Data["SourcePath"] = "/" + path.Join(userName, repoName, "src", afterCommitId)
+	ctx.Data["RawPath"] = "/" + path.Join(userName, repoName, "raw", afterCommitId)
+	ctx.HTML(200, DIFF)
+}
+
 func FileHistory(ctx *middleware.Context) {
 	ctx.Data["IsRepoToolbarCommits"] = true