Fix initial commit page & binary munching problem (#13249) (#13259)

Backport #13249

* Fix initial commit page

Unfortunately as a result of properly fixing ParsePatch the hack that
used git show <initial_commit_id> to get the diff for this failed.

This PR fixes this using the "super-secret" empty tree ref to make the
diff against.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Also fix #13248

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update services/gitdiff/gitdiff.go

Co-authored-by: 6543 <6543@obermui.de>

Co-authored-by: 6543 <6543@obermui.de>
This commit is contained in:
zeripath 2020-10-22 15:30:19 +01:00 committed by GitHub
parent 9f9a53e361
commit f1fd8a772f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 2 deletions

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@ -498,6 +498,8 @@ parsingLoop:
break parsingLoop
}
switch {
case strings.HasPrefix(line, cmdDiffHead):
break curFileLoop
case strings.HasPrefix(line, "old mode ") ||
strings.HasPrefix(line, "new mode "):
if strings.HasSuffix(line, " 160000\n") {
@ -815,8 +817,15 @@ func GetDiffRangeWithWhitespaceBehavior(repoPath, beforeCommitID, afterCommitID
ctx, cancel := context.WithCancel(git.DefaultContext)
defer cancel()
var cmd *exec.Cmd
if len(beforeCommitID) == 0 && commit.ParentCount() == 0 {
cmd = exec.CommandContext(ctx, git.GitExecutable, "show", afterCommitID)
if (len(beforeCommitID) == 0 || beforeCommitID == git.EmptySHA) && commit.ParentCount() == 0 {
diffArgs := []string{"diff", "--src-prefix=\\a/", "--dst-prefix=\\b/", "-M"}
if len(whitespaceBehavior) != 0 {
diffArgs = append(diffArgs, whitespaceBehavior)
}
// append empty tree ref
diffArgs = append(diffArgs, "4b825dc642cb6eb9a060e54bf8d69288fbee4904")
diffArgs = append(diffArgs, afterCommitID)
cmd = exec.CommandContext(ctx, git.GitExecutable, diffArgs...)
} else {
actualBeforeCommitID := beforeCommitID
if len(actualBeforeCommitID) == 0 {