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Allow Loading of Diffs that are too large (#17739)

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* Allow Loading of Diffs that are too large

This PR allows the loading of diffs that are suppressed because the file
is too large. It does not handle diffs of files which have lines which
are too long.

Fix #17738

Signed-off-by: Andrew Thornton <art27@cantab.net>
tokarchuk/v1.17
zeripath 3 years ago committed by GitHub
parent d710af6669
commit 8511eec4d4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 146 additions and 62 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 1
      options/locale/locale_en-US.ini
  2. 28
      routers/web/repo/commit.go
  3. 20
      routers/web/repo/compare.go
  4. 22
      routers/web/repo/pull.go
  5. 96
      services/gitdiff/gitdiff.go
  6. 11
      services/gitdiff/gitdiff_test.go
  7. 1
      templates/repo/diff/box.tmpl
  8. 29
      web_src/js/features/repo-diff.js

1
options/locale/locale_en-US.ini
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@ -2043,6 +2043,7 @@ diff.file_suppressed = File diff suppressed because it is too large
diff.file_suppressed_line_too_long = File diff suppressed because one or more lines are too long
diff.too_many_files = Some files were not shown because too many files have changed in this diff
diff.show_more = Show More
diff.load = Load Diff
diff.generated = generated
diff.vendored = vendored
diff.comment.placeholder = Leave a comment

28
routers/web/repo/commit.go
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@ -262,8 +262,6 @@ func Diff(ctx *context.Context) {
err error
)
fileOnly := ctx.FormBool("file-only")
if ctx.Data["PageIsWiki"] != nil {
gitRepo, err = git.OpenRepository(ctx.Repo.Repository.WikiPath())
if err != nil {
@ -288,13 +286,23 @@ func Diff(ctx *context.Context) {
commitID = commit.ID.String()
}
diff, err := gitdiff.GetDiffCommitWithWhitespaceBehavior(gitRepo,
commitID, ctx.FormString("skip-to"), setting.Git.MaxGitDiffLines,
setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles,
gitdiff.GetWhitespaceFlag(ctx.Data["WhitespaceBehavior"].(string)),
false)
fileOnly := ctx.FormBool("file-only")
maxLines, maxFiles := setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles
files := ctx.FormStrings("files")
if fileOnly && (len(files) == 2 || len(files) == 1) {
maxLines, maxFiles = -1, -1
}
diff, err := gitdiff.GetDiff(gitRepo, &gitdiff.DiffOptions{
AfterCommitID: commitID,
SkipTo: ctx.FormString("skip-to"),
MaxLines: maxLines,
MaxLineCharacters: setting.Git.MaxGitDiffLineCharacters,
MaxFiles: maxFiles,
WhitespaceBehavior: gitdiff.GetWhitespaceFlag(ctx.Data["WhitespaceBehavior"].(string)),
}, files...)
if err != nil {
ctx.NotFound("GetDiffCommitWithWhitespaceBehavior", err)
ctx.NotFound("GetDiff", err)
return
}
@ -325,10 +333,6 @@ func Diff(ctx *context.Context) {
ctx.Data["Title"] = commit.Summary() + " · " + base.ShortSha(commitID)
ctx.Data["Commit"] = commit
ctx.Data["Diff"] = diff
if fileOnly {
ctx.HTML(http.StatusOK, tplDiffBox)
return
}
statuses, err := models.GetLatestCommitStatus(ctx.Repo.Repository.ID, commitID, db.ListOptions{})
if err != nil {

20
routers/web/repo/compare.go
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@ -569,9 +569,23 @@ func PrepareCompareDiff(
beforeCommitID = ci.CompareInfo.BaseCommitID
}
diff, err := gitdiff.GetDiffRangeWithWhitespaceBehavior(ci.HeadGitRepo,
beforeCommitID, headCommitID, ctx.FormString("skip-to"), setting.Git.MaxGitDiffLines,
setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, whitespaceBehavior, ci.DirectComparison)
maxLines, maxFiles := setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles
files := ctx.FormStrings("files")
if len(files) == 2 || len(files) == 1 {
maxLines, maxFiles = -1, -1
}
diff, err := gitdiff.GetDiff(ci.HeadGitRepo,
&gitdiff.DiffOptions{
BeforeCommitID: beforeCommitID,
AfterCommitID: headCommitID,
SkipTo: ctx.FormString("skip-to"),
MaxLines: maxLines,
MaxLineCharacters: setting.Git.MaxGitDiffLineCharacters,
MaxFiles: maxFiles,
WhitespaceBehavior: whitespaceBehavior,
DirectComparison: ci.DirectComparison,
}, ctx.FormStrings("files")...)
if err != nil {
ctx.ServerError("GetDiffRangeWithWhitespaceBehavior", err)
return false

22
routers/web/repo/pull.go
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@ -633,10 +633,24 @@ func ViewPullFiles(ctx *context.Context) {
ctx.Data["Reponame"] = ctx.Repo.Repository.Name
ctx.Data["AfterCommitID"] = endCommitID
diff, err := gitdiff.GetDiffRangeWithWhitespaceBehavior(gitRepo,
startCommitID, endCommitID, ctx.FormString("skip-to"), setting.Git.MaxGitDiffLines,
setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles,
gitdiff.GetWhitespaceFlag(ctx.Data["WhitespaceBehavior"].(string)), false)
fileOnly := ctx.FormBool("file-only")
maxLines, maxFiles := setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles
files := ctx.FormStrings("files")
if fileOnly && (len(files) == 2 || len(files) == 1) {
maxLines, maxFiles = -1, -1
}
diff, err := gitdiff.GetDiff(gitRepo,
&gitdiff.DiffOptions{
BeforeCommitID: startCommitID,
AfterCommitID: endCommitID,
SkipTo: ctx.FormString("skip-to"),
MaxLines: maxLines,
MaxLineCharacters: setting.Git.MaxGitDiffLineCharacters,
MaxFiles: maxFiles,
WhitespaceBehavior: gitdiff.GetWhitespaceFlag(ctx.Data["WhitespaceBehavior"].(string)),
}, ctx.FormStrings("files")...)
if err != nil {
ctx.ServerError("GetDiffRangeWithWhitespaceBehavior", err)
return

96
services/gitdiff/gitdiff.go
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@ -695,6 +695,7 @@ const cmdDiffHead = "diff --git "
// ParsePatch builds a Diff object from a io.Reader and some parameters.
func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader, skipToFile string) (*Diff, error) {
log.Debug("ParsePatch(%d, %d, %d, ..., %s)", maxLines, maxLineCharacters, maxFiles, skipToFile)
var curFile *DiffFile
skipping := skipToFile != ""
@ -726,7 +727,7 @@ parsingLoop:
return diff, fmt.Errorf("invalid first file line: %s", line)
}
if len(diff.Files) >= maxFiles {
if maxFiles > -1 && len(diff.Files) >= maxFiles {
lastFile := createDiffFile(diff, line)
diff.End = lastFile.Name
diff.IsIncomplete = true
@ -1038,7 +1039,7 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
switch lineBytes[0] {
case '@':
if curFileLinesCount >= maxLines {
if maxLines > -1 && curFileLinesCount >= maxLines {
curFile.IsIncomplete = true
continue
}
@ -1075,7 +1076,7 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
rightLine = lineSectionInfo.RightIdx
continue
case '\\':
if curFileLinesCount >= maxLines {
if maxLines > -1 && curFileLinesCount >= maxLines {
curFile.IsIncomplete = true
continue
}
@ -1090,7 +1091,7 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
case '+':
curFileLinesCount++
curFile.Addition++
if curFileLinesCount >= maxLines {
if maxLines > -1 && curFileLinesCount >= maxLines {
curFile.IsIncomplete = true
continue
}
@ -1114,7 +1115,7 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
case '-':
curFileLinesCount++
curFile.Deletion++
if curFileLinesCount >= maxLines {
if maxLines > -1 && curFileLinesCount >= maxLines {
curFile.IsIncomplete = true
continue
}
@ -1134,7 +1135,7 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
curSection.Lines = append(curSection.Lines, diffLine)
case ' ':
curFileLinesCount++
if curFileLinesCount >= maxLines {
if maxLines > -1 && curFileLinesCount >= maxLines {
curFile.IsIncomplete = true
continue
}
@ -1278,13 +1279,25 @@ func readFileName(rd *strings.Reader) (string, bool) {
return name[2:], ambiguity
}
// GetDiffRangeWithWhitespaceBehavior builds a Diff between two commits of a repository.
// DiffOptions represents the options for a DiffRange
type DiffOptions struct {
BeforeCommitID string
AfterCommitID string
SkipTo string
MaxLines int
MaxLineCharacters int
MaxFiles int
WhitespaceBehavior string
DirectComparison bool
}
// GetDiff builds a Diff between two commits of a repository.
// Passing the empty string as beforeCommitID returns a diff from the parent commit.
// The whitespaceBehavior is either an empty string or a git flag
func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID, afterCommitID, skipTo string, maxLines, maxLineCharacters, maxFiles int, whitespaceBehavior string, directComparison bool) (*Diff, error) {
func GetDiff(gitRepo *git.Repository, opts *DiffOptions, files ...string) (*Diff, error) {
repoPath := gitRepo.Path
commit, err := gitRepo.GetCommit(afterCommitID)
commit, err := gitRepo.GetCommit(opts.AfterCommitID)
if err != nil {
return nil, err
}
@ -1293,45 +1306,54 @@ func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID,
defer cancel()
argsLength := 6
if len(whitespaceBehavior) > 0 {
if len(opts.WhitespaceBehavior) > 0 {
argsLength++
}
if len(skipTo) > 0 {
if len(opts.SkipTo) > 0 {
argsLength++
}
if len(files) > 0 {
argsLength += len(files) + 1
}
diffArgs := make([]string, 0, argsLength)
if (len(beforeCommitID) == 0 || beforeCommitID == git.EmptySHA) && commit.ParentCount() == 0 {
if (len(opts.BeforeCommitID) == 0 || opts.BeforeCommitID == git.EmptySHA) && commit.ParentCount() == 0 {
diffArgs = append(diffArgs, "diff", "--src-prefix=\\a/", "--dst-prefix=\\b/", "-M")
if len(whitespaceBehavior) != 0 {
diffArgs = append(diffArgs, whitespaceBehavior)
if len(opts.WhitespaceBehavior) != 0 {
diffArgs = append(diffArgs, opts.WhitespaceBehavior)
}
// append empty tree ref
diffArgs = append(diffArgs, "4b825dc642cb6eb9a060e54bf8d69288fbee4904")
diffArgs = append(diffArgs, afterCommitID)
diffArgs = append(diffArgs, opts.AfterCommitID)
} else {
actualBeforeCommitID := beforeCommitID
actualBeforeCommitID := opts.BeforeCommitID
if len(actualBeforeCommitID) == 0 {
parentCommit, _ := commit.Parent(0)
actualBeforeCommitID = parentCommit.ID.String()
}
diffArgs = append(diffArgs, "diff", "--src-prefix=\\a/", "--dst-prefix=\\b/", "-M")
if len(whitespaceBehavior) != 0 {
diffArgs = append(diffArgs, whitespaceBehavior)
if len(opts.WhitespaceBehavior) != 0 {
diffArgs = append(diffArgs, opts.WhitespaceBehavior)
}
diffArgs = append(diffArgs, actualBeforeCommitID)
diffArgs = append(diffArgs, afterCommitID)
beforeCommitID = actualBeforeCommitID
diffArgs = append(diffArgs, opts.AfterCommitID)
opts.BeforeCommitID = actualBeforeCommitID
}
// In git 2.31, git diff learned --skip-to which we can use to shortcut skip to file
// so if we are using at least this version of git we don't have to tell ParsePatch to do
// the skipping for us
parsePatchSkipToFile := skipTo
if skipTo != "" && git.CheckGitVersionAtLeast("2.31") == nil {
diffArgs = append(diffArgs, "--skip-to="+skipTo)
parsePatchSkipToFile := opts.SkipTo
if opts.SkipTo != "" && git.CheckGitVersionAtLeast("2.31") == nil {
diffArgs = append(diffArgs, "--skip-to="+opts.SkipTo)
parsePatchSkipToFile = ""
}
if len(files) > 0 {
diffArgs = append(diffArgs, "--")
diffArgs = append(diffArgs, files...)
}
cmd := exec.CommandContext(ctx, git.GitExecutable, diffArgs...)
cmd.Dir = repoPath
@ -1349,16 +1371,16 @@ func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID,
pid := process.GetManager().Add(fmt.Sprintf("GetDiffRange [repo_path: %s]", repoPath), cancel)
defer process.GetManager().Remove(pid)
diff, err := ParsePatch(maxLines, maxLineCharacters, maxFiles, stdout, parsePatchSkipToFile)
diff, err := ParsePatch(opts.MaxLines, opts.MaxLineCharacters, opts.MaxFiles, stdout, parsePatchSkipToFile)
if err != nil {
return nil, fmt.Errorf("unable to ParsePatch: %w", err)
}
diff.Start = skipTo
diff.Start = opts.SkipTo
var checker *git.CheckAttributeReader
if git.CheckGitVersionAtLeast("1.7.8") == nil {
indexFilename, worktree, deleteTemporaryFile, err := gitRepo.ReadTreeToTemporaryIndex(afterCommitID)
indexFilename, worktree, deleteTemporaryFile, err := gitRepo.ReadTreeToTemporaryIndex(opts.AfterCommitID)
if err == nil {
defer deleteTemporaryFile()
@ -1370,12 +1392,12 @@ func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID,
}
ctx, cancel := context.WithCancel(git.DefaultContext)
if err := checker.Init(ctx); err != nil {
log.Error("Unable to open checker for %s. Error: %v", afterCommitID, err)
log.Error("Unable to open checker for %s. Error: %v", opts.AfterCommitID, err)
} else {
go func() {
err := checker.Run()
if err != nil && err != ctx.Err() {
log.Error("Unable to open checker for %s. Error: %v", afterCommitID, err)
log.Error("Unable to open checker for %s. Error: %v", opts.AfterCommitID, err)
}
cancel()
}()
@ -1426,7 +1448,7 @@ func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID,
diffFile.IsGenerated = analyze.IsGenerated(diffFile.Name)
}
tailSection := diffFile.GetTailSection(gitRepo, beforeCommitID, afterCommitID)
tailSection := diffFile.GetTailSection(gitRepo, opts.BeforeCommitID, opts.AfterCommitID)
if tailSection != nil {
diffFile.Sections = append(diffFile.Sections, tailSection)
}
@ -1437,19 +1459,19 @@ func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID,
}
separator := "..."
if directComparison {
if opts.DirectComparison {
separator = ".."
}
shortstatArgs := []string{beforeCommitID + separator + afterCommitID}
if len(beforeCommitID) == 0 || beforeCommitID == git.EmptySHA {
shortstatArgs = []string{git.EmptyTreeSHA, afterCommitID}
shortstatArgs := []string{opts.BeforeCommitID + separator + opts.AfterCommitID}
if len(opts.BeforeCommitID) == 0 || opts.BeforeCommitID == git.EmptySHA {
shortstatArgs = []string{git.EmptyTreeSHA, opts.AfterCommitID}
}
diff.NumFiles, diff.TotalAddition, diff.TotalDeletion, err = git.GetDiffShortStat(repoPath, shortstatArgs...)
if err != nil && strings.Contains(err.Error(), "no merge base") {
// git >= 2.28 now returns an error if base and head have become unrelated.
// previously it would return the results of git diff --shortstat base head so let's try that...
shortstatArgs = []string{beforeCommitID, afterCommitID}
shortstatArgs = []string{opts.BeforeCommitID, opts.AfterCommitID}
diff.NumFiles, diff.TotalAddition, diff.TotalDeletion, err = git.GetDiffShortStat(repoPath, shortstatArgs...)
}
if err != nil {
@ -1459,12 +1481,6 @@ func GetDiffRangeWithWhitespaceBehavior(gitRepo *git.Repository, beforeCommitID,
return diff, nil
}
// GetDiffCommitWithWhitespaceBehavior builds a Diff representing the given commitID.
// The whitespaceBehavior is either an empty string or a git flag
func GetDiffCommitWithWhitespaceBehavior(gitRepo *git.Repository, commitID, skipTo string, maxLines, maxLineCharacters, maxFiles int, whitespaceBehavior string, directComparison bool) (*Diff, error) {
return GetDiffRangeWithWhitespaceBehavior(gitRepo, "", commitID, skipTo, maxLines, maxLineCharacters, maxFiles, whitespaceBehavior, directComparison)
}
// CommentAsDiff returns c.Patch as *Diff
func CommentAsDiff(c *models.Comment) (*Diff, error) {
diff, err := ParsePatch(setting.Git.MaxGitDiffLines,

11
services/gitdiff/gitdiff_test.go
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@ -693,8 +693,15 @@ func TestGetDiffRangeWithWhitespaceBehavior(t *testing.T) {
}
defer gitRepo.Close()
for _, behavior := range []string{"-w", "--ignore-space-at-eol", "-b", ""} {
diffs, err := GetDiffRangeWithWhitespaceBehavior(gitRepo, "559c156f8e0178b71cb44355428f24001b08fc68", "bd7063cc7c04689c4d082183d32a604ed27a24f9", "",
setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles, behavior, false)
diffs, err := GetDiff(gitRepo,
&DiffOptions{
AfterCommitID: "bd7063cc7c04689c4d082183d32a604ed27a24f9",
BeforeCommitID: "559c156f8e0178b71cb44355428f24001b08fc68",
MaxLines: setting.Git.MaxGitDiffLines,
MaxLineCharacters: setting.Git.MaxGitDiffLineCharacters,
MaxFiles: setting.Git.MaxGitDiffFiles,
WhitespaceBehavior: behavior,
})
assert.NoError(t, err, fmt.Sprintf("Error when diff with %s", behavior))
for _, f := range diffs.Files {
assert.True(t, len(f.Sections) > 0, fmt.Sprintf("%s should have sections", f.Name))

1
templates/repo/diff/box.tmpl
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@ -112,6 +112,7 @@
{{$.i18n.Tr "repo.diff.file_suppressed_line_too_long"}}
{{else}}
{{$.i18n.Tr "repo.diff.file_suppressed"}}
<a class="ui basic tiny button diff-show-more-button" data-href="{{$.Link}}?file-only=true&files={{$file.Name}}&files={{$file.OldName}}">{{$.i18n.Tr "repo.diff.load"}}</a>
{{end}}
{{else}}
{{$.i18n.Tr "repo.diff.bin_not_shown"}}

29
web_src/js/features/repo-diff.js
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@ -94,13 +94,40 @@ export function initRepoDiffShowMore() {
type: 'GET',
url,
}).done((resp) => {
if (!resp || resp.html === '' || resp.empty) {
if (!resp) {
$('#diff-show-more-files, #diff-show-more-files-stats').removeClass('disabled');
return;
}
$('#diff-too-many-files-stats').remove();
$('#diff-files').append($(resp).find('#diff-files li'));
$('#diff-incomplete').replaceWith($(resp).find('#diff-file-boxes').children());
}).fail(() => {
$('#diff-show-more-files, #diff-show-more-files-stats').removeClass('disabled');
});
});
$(document).on('click', 'a.diff-show-more-button', (e) => {
e.preventDefault();
const $target = $(e.target);
if ($target.hasClass('disabled')) {
return;
}
$target.addClass('disabled');
const url = $target.data('href');
$.ajax({
type: 'GET',
url,
}).done((resp) => {
if (!resp) {
$target.removeClass('disabled');
return;
}
$target.parent().replaceWith($(resp).find('#diff-file-boxes .diff-file-body .file-body').children());
}).fail(() => {
$target.removeClass('disabled');
});
});
}

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