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Refactor parseSignatureFromCommitLine (#29054)

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Replace #28849. Thanks to @yp05327 for the looking into the problem.
Fix #28840

The old behavior of newSignatureFromCommitline is not right. The new
parseSignatureFromCommitLine:

1. never fails
2. only accept one format (if there is any other, it could be easily added)

And add some tests.
This commit is contained in:
wxiaoguang
2024-02-09 11:02:53 +08:00
committed by GitHub
parent da2f03750f
commit a24e1da7e9
8 changed files with 104 additions and 149 deletions
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44
modules/git/signature_gogit.go
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@ -7,52 +7,8 @@
package git
import (
"bytes"
"strconv"
"strings"
"time"
"github.com/go-git/go-git/v5/plumbing/object"
)
// Signature represents the Author or Committer information.
type Signature = object.Signature
// Helper to get a signature from the commit line, which looks like these:
//
// author Patrick Gundlach <gundlach@speedata.de> 1378823654 +0200
// author Patrick Gundlach <gundlach@speedata.de> Thu, 07 Apr 2005 22:13:13 +0200
//
// but without the "author " at the beginning (this method should)
// be used for author and committer.
//
// FIXME: include timezone for timestamp!
func newSignatureFromCommitline(line []byte) (_ *Signature, err error) {
sig := new(Signature)
emailStart := bytes.IndexByte(line, '<')
if emailStart > 0 { // Empty name has already occurred, even if it shouldn't
sig.Name = strings.TrimSpace(string(line[:emailStart-1]))
}
emailEnd := bytes.IndexByte(line, '>')
sig.Email = string(line[emailStart+1 : emailEnd])
// Check date format.
if len(line) > emailEnd+2 {
firstChar := line[emailEnd+2]
if firstChar >= 48 && firstChar <= 57 {
timestop := bytes.IndexByte(line[emailEnd+2:], ' ')
timestring := string(line[emailEnd+2 : emailEnd+2+timestop])
seconds, _ := strconv.ParseInt(timestring, 10, 64)
sig.When = time.Unix(seconds, 0)
} else {
sig.When, err = time.Parse(GitTimeLayout, string(line[emailEnd+2:]))
if err != nil {
return nil, err
}
}
} else {
// Fall back to unix 0 time
sig.When = time.Unix(0, 0)
}
return sig, nil
}