func getLogCommandSubCmd()

in internal/gitaly/service/commit/find_commits.go [240:312]
63 lines of code
22 McCabe index (conditional complexity)

func getLogCommandSubCmd(req *gitalypb.FindCommitsRequest) gitcmd.Command {
	logFormatOption := "--format=%H"
	// To split the commits by '\x01' instead of '\n'
	if req.GetIncludeShortstat() {
		logFormatOption = "--format=%x01%H"
	}
	if req.GetTrailers() {
		logFormatOption += "%x00%(trailers:unfold,separator=%x00)"
	}

	if len(req.GetIncludeReferencedBy()) > 0 {
		// Delimit ref names with '\x02' to avoid confusing with trailers
		logFormatOption += "%x02%D"
	}

	subCmd := gitcmd.Command{Name: "log", Flags: []gitcmd.Option{gitcmd.Flag{Name: logFormatOption}}}

	//  We will perform the offset in Go because --follow doesn't play well with --skip.
	//  See: https://gitlab.com/gitlab-org/gitlab-ce/issues/3574#note_3040520
	if req.GetOffset() > 0 && !calculateOffsetManually(req) {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: fmt.Sprintf("--skip=%d", req.GetOffset())})
	}
	limit := req.GetLimit()
	if calculateOffsetManually(req) {
		limit += req.GetOffset()
	}
	subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: fmt.Sprintf("--max-count=%d", limit)})

	if req.GetFollow() && len(req.GetPaths()) > 0 {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--follow"})
	}
	if req.GetAuthor() != nil {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: fmt.Sprintf("--author=%s", string(req.GetAuthor()))})
	}
	if req.GetSkipMerges() {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--no-merges"})
	}
	if req.GetBefore() != nil {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: fmt.Sprintf("--before=%s", req.GetBefore().String())})
	}
	if req.GetAfter() != nil {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: fmt.Sprintf("--after=%s", req.GetAfter().String())})
	}
	if req.GetAll() {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--all"}, gitcmd.Flag{Name: "--reverse"})
	}
	if req.GetRevision() != nil {
		subCmd.Args = []string{string(req.GetRevision())}
	}
	if req.GetFirstParent() {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--first-parent"})
	}
	if len(req.GetPaths()) > 0 {
		for _, path := range req.GetPaths() {
			subCmd.PostSepArgs = append(subCmd.PostSepArgs, string(path))
		}
	}
	if req.GetOrder() == gitalypb.FindCommitsRequest_TOPO {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--topo-order"})
	}
	if req.GetIncludeShortstat() {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--shortstat"})
	}

	if len(req.GetIncludeReferencedBy()) > 0 {
		subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: "--decorate=full"})
		for _, pattern := range req.GetIncludeReferencedBy() {
			subCmd.Flags = append(subCmd.Flags, gitcmd.Flag{Name: fmt.Sprintf("--decorate-refs=%s", pattern)})
		}
	}

	return subCmd
}