mirror of
https://github.com/hanzoai/forge.git
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zeekayandHanzo Dev
aa87442fdd
Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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"bufio"
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"bytes"
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"fmt"
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"io"
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)
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const (
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commitHeaderGpgsig = "gpgsig"
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commitHeaderGpgsigSha256 = "gpgsig-sha256"
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)
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func assignCommitFields(commit *Commit, headerKey string, headerValue []byte) error {
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if len(headerValue) > 0 && headerValue[len(headerValue)-1] == '\n' {
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headerValue = headerValue[:len(headerValue)-1] // remove trailing newline
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}
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switch headerKey {
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case "tree":
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objID, err := NewIDFromString(string(headerValue))
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if err != nil {
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return fmt.Errorf("invalid tree ID %q: %w", string(headerValue), err)
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}
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commit.TreeID = objID
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case "parent":
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objID, err := NewIDFromString(string(headerValue))
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if err != nil {
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return fmt.Errorf("invalid parent ID %q: %w", string(headerValue), err)
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}
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commit.Parents = append(commit.Parents, objID)
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case "author":
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commit.Author.Decode(headerValue)
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case "committer":
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commit.Committer.Decode(headerValue)
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case commitHeaderGpgsig, commitHeaderGpgsigSha256:
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// if there are duplicate "gpgsig" and "gpgsig-sha256" headers, then the signature must have already been invalid
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// so we don't need to handle duplicate headers here
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commit.Signature = &CommitSignature{Signature: string(headerValue)}
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}
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return nil
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}
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// CommitFromReader will generate a Commit from a provided reader
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// We need this to interpret commits from cat-file or cat-file --batch
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//
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// If used as part of a cat-file --batch stream you need to limit the reader to the correct size
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func CommitFromReader(objectID ObjectID, reader io.Reader) (*Commit, error) {
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commit := &Commit{
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ID: objectID,
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Author: &Signature{},
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Committer: &Signature{},
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}
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bufReader := bufio.NewReader(reader)
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inHeader := true
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var payloadSB, messageSB bytes.Buffer
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var headerKey string
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var headerValue []byte
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for {
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line, err := bufReader.ReadBytes('\n')
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if err != nil && err != io.EOF {
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return nil, fmt.Errorf("unable to read commit %q: %w", objectID.String(), err)
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}
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if len(line) == 0 {
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break
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}
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if inHeader {
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inHeader = !(len(line) == 1 && line[0] == '\n') // still in header if line is not just a newline
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k, v, _ := bytes.Cut(line, []byte{' '})
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if len(k) != 0 || !inHeader {
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if headerKey != "" {
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if err = assignCommitFields(commit, headerKey, headerValue); err != nil {
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return nil, fmt.Errorf("unable to parse commit %q: %w", objectID.String(), err)
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}
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}
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headerKey = string(k) // it also resets the headerValue to empty string if not inHeader
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headerValue = v
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} else {
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headerValue = append(headerValue, v...)
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}
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if headerKey != commitHeaderGpgsig && headerKey != commitHeaderGpgsigSha256 {
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_, _ = payloadSB.Write(line)
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}
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} else {
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_, _ = messageSB.Write(line)
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_, _ = payloadSB.Write(line)
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}
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}
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commit.MessageRaw = messageSB.String()
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if commit.Signature != nil {
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commit.Signature.Payload = payloadSB.String()
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}
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return commit, nil
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}
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