// Copyright 2015 The Gogs Authors. All rights reserved. // Copyright 2019 The Gitea Authors. All rights reserved. // SPDX-License-Identifier: MIT //go:build !gogit package git import ( "bytes" "fmt" "strconv" "strings" "time" ) // Signature represents the Author or Committer information. type Signature struct { // Name represents a person name. It is an arbitrary string. Name string // Email is an email, but it cannot be assumed to be well-formed. Email string // When is the timestamp of the signature. When time.Time } func (s *Signature) String() string { return fmt.Sprintf("%s <%s>", s.Name, s.Email) } // Decode decodes a byte array representing a signature to signature func (s *Signature) Decode(b []byte) { sig, _ := newSignatureFromCommitline(b) s.Email = sig.Email s.Name = sig.Name s.When = sig.When } // 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. func newSignatureFromCommitline(line []byte) (sig *Signature, err error) { sig = new(Signature) emailStart := bytes.LastIndexByte(line, '<') emailEnd := bytes.LastIndexByte(line, '>') if emailStart == -1 || emailEnd == -1 || emailEnd < emailStart { return } if emailStart > 0 { // Empty name has already occurred, even if it shouldn't sig.Name = strings.TrimSpace(string(line[:emailStart-1])) } sig.Email = string(line[emailStart+1 : emailEnd]) hasTime := emailEnd+2 < len(line) if !hasTime { return } // Check date format. firstChar := line[emailEnd+2] if firstChar >= 48 && firstChar <= 57 { idx := bytes.IndexByte(line[emailEnd+2:], ' ') if idx < 0 { return } timestring := string(line[emailEnd+2 : emailEnd+2+idx]) seconds, _ := strconv.ParseInt(timestring, 10, 64) sig.When = time.Unix(seconds, 0) idx += emailEnd + 3 if idx >= len(line) || idx+5 > len(line) { return } timezone := string(line[idx : idx+5]) tzhours, err1 := strconv.ParseInt(timezone[0:3], 10, 64) tzmins, err2 := strconv.ParseInt(timezone[3:], 10, 64) if err1 != nil || err2 != nil { return } if tzhours < 0 { tzmins *= -1 } tz := time.FixedZone("", int(tzhours*60*60+tzmins*60)) sig.When = sig.When.In(tz) } else { sig.When, err = time.Parse(GitTimeLayout, string(line[emailEnd+2:])) if err != nil { return } } return sig, err }