Files
forge/modules/gitrepo/diff.go
zeekayandHanzo Dev 9a07b4d089 legal: Hanzo AI, Inc. copyright above the upstream notices
2978 files. The fork is 2026-07-15 (rebrand: gitea.dev -> github.com/hanzoai/git),
so 2026 is the year, and "Copyright 2026 Hanzo AI, Inc." was already the form
used by the handful of files that had ours.

Shape is now:

	// Copyright 2026 Hanzo AI, Inc. All rights reserved.
	// Copyright 2015 The Gogs Authors. All rights reserved.
	// Copyright 2019 The Gitea Authors. All rights reserved.
	// SPDX-License-Identifier: MIT

Ours on top, theirs retained verbatim. Retained because MIT requires it, and
separately because they are true — those authors did write that code.

Not renamed to "The Git Authors": Git is a different project under a different
license, and putting its name here would attribute this code to people who have
nothing to do with it. Adding our line is the fix; overwriting theirs would have
been both a licence violation and a false statement.

gofmt still reports import-order drift in some of these files. It predates this
change (verified against a stash) and is left alone rather than burying a
one-line-per-file legal change under 3000 files of unrelated reordering.

Build clean.

Co-authored-by: Hanzo Dev <[email protected]>
2026-07-27 13:49:52 -07:00

73 lines
2.5 KiB
Go

// Copyright 2026 Hanzo AI, Inc. All rights reserved.
// Copyright 2025 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package gitrepo
import (
"context"
"fmt"
"io"
"regexp"
"strconv"
"github.com/hanzoai/git/modules/git/gitcmd"
)
// GetDiffShortStatByCmdArgs counts number of changed files, number of additions and deletions
// TODO: it can be merged with another "GetDiffShortStat" in the future
func GetDiffShortStatByCmdArgs(ctx context.Context, repo Repository, trustedArgs gitcmd.TrustedCmdArgs, dynamicArgs ...string) (numFiles, totalAdditions, totalDeletions int, err error) {
// Now if we call:
// $ git diff --shortstat 1ebb35b98889ff77299f24d82da426b434b0cca0...788b8b1440462d477f45b0088875
// we get:
// " 9902 files changed, 2034198 insertions(+), 298800 deletions(-)\n"
cmd := gitcmd.NewCommand("diff", "--shortstat").AddArguments(trustedArgs...).AddDynamicArguments(dynamicArgs...)
stdout, _, err := RunCmdString(ctx, repo, cmd)
if err != nil {
return 0, 0, 0, err
}
return parseDiffStat(stdout)
}
var shortStatFormat = regexp.MustCompile(
`\s*(\d+) files? changed(?:, (\d+) insertions?\(\+\))?(?:, (\d+) deletions?\(-\))?`)
func parseDiffStat(stdout string) (numFiles, totalAdditions, totalDeletions int, err error) {
if len(stdout) == 0 || stdout == "\n" {
return 0, 0, 0, nil
}
groups := shortStatFormat.FindStringSubmatch(stdout)
if len(groups) != 4 {
return 0, 0, 0, fmt.Errorf("unable to parse shortstat: %s groups: %s", stdout, groups)
}
numFiles, err = strconv.Atoi(groups[1])
if err != nil {
return 0, 0, 0, fmt.Errorf("unable to parse shortstat: %s. Error parsing NumFiles %w", stdout, err)
}
if len(groups[2]) != 0 {
totalAdditions, err = strconv.Atoi(groups[2])
if err != nil {
return 0, 0, 0, fmt.Errorf("unable to parse shortstat: %s. Error parsing NumAdditions %w", stdout, err)
}
}
if len(groups[3]) != 0 {
totalDeletions, err = strconv.Atoi(groups[3])
if err != nil {
return 0, 0, 0, fmt.Errorf("unable to parse shortstat: %s. Error parsing NumDeletions %w", stdout, err)
}
}
return numFiles, totalAdditions, totalDeletions, err
}
// GetReverseRawDiff dumps the reverse diff results of repository in given commit ID to io.Writer.
func GetReverseRawDiff(ctx context.Context, repo Repository, commitID string, writer io.Writer) error {
return RunCmdWithStderr(ctx, repo, gitcmd.NewCommand("show", "--pretty=format:revert %H%n", "-R").
AddDynamicArguments(commitID).
WithStdoutCopy(writer),
)
}