Method ParseGitFileHeader

pkg/gitdiff/file_header.go:63–108

()

}

func (p *parser) ParseGitFileHeader() (*File, error) {
	const prefix = "diff --git "

	if !strings.HasPrefix(p.Line(0), prefix) {
		return nil, nil
	}
	header := p.Line(0)[len(prefix):]

	defaultName, err := parseGitHeaderName(header)
	if err != nil {
		return nil, p.Errorf(0, "git file header: %v", err)
	}

	f := &File{}
	for {
		end, err := parseGitHeaderData(f, p.Line(1), defaultName)
		if err != nil {
			return nil, p.Errorf(1, "git file header: %v", err)
		}

		if err := p.Next(); err != nil {
			if err == io.EOF {
				break
			}
			return nil, err
		}

		if end {
			break
		}
	}

	if f.OldName == "" && f.NewName == "" {
		if defaultName == "" {
			return nil, p.Errorf(0, "git file header: missing filename information")
		}
		f.OldName = defaultName
		f.NewName = defaultName
	}

	if (f.NewName == "" && !f.IsDelete) || (f.OldName == "" && !f.IsNew) {
		return nil, p.Errorf(0, "git file header: missing filename information")
	}

	return f, nil
}

func (p *parser) ParseTraditionalFileHeader() (*File, error) {
	const shortestValidFragHeader = "@@ -1 +1 @@\n"