136 lines
3.1 KiB
Go
136 lines
3.1 KiB
Go
//go:build ignore
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// Attempt to work out if branches have already been merged
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package main
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import (
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"bufio"
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"errors"
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"flag"
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"fmt"
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"log"
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"os"
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"os/exec"
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"regexp"
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)
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var (
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// Flags
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master = flag.String("master", "master", "Branch to work out if merged into")
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version = "development version" // overridden by goreleaser
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)
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func usage() {
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fmt.Fprintf(os.Stderr, `Usage: %s [options]
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Version: %s
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Attempt to work out if in the current git repo branches have been
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merged into master.
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Example usage:
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%s
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Full options:
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`, os.Args[0], version, os.Args[0])
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flag.PrintDefaults()
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}
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var (
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printedSep = false
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)
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const (
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sep1 = "============================================================"
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sep2 = "------------------------------------------------------------"
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)
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// Show the diff between two git revisions
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func gitDiffDiff(rev1, rev2 string) {
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fmt.Printf("Diff of diffs of %q and %q\n", rev1, rev2)
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cmd := exec.Command("bash", "-c", fmt.Sprintf(`diff <(git show "%s") <(git show "%s")`, rev1, rev2))
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out, err := cmd.Output()
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if err != nil {
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var exitErr *exec.ExitError
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if errors.As(err, &exitErr) && exitErr.ExitCode() == 1 {
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// OK just different
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} else {
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log.Fatalf("git diff failed: %#v", err)
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}
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}
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_, _ = os.Stdout.Write(out)
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}
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var reCommit = regexp.MustCompile(`commit ([0-9a-f]{32,})`)
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// Grep the git log for logLine
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func gitLogGrep(branch, rev, logLine string) {
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cmd := exec.Command("git", "log", "--grep", regexp.QuoteMeta(logLine), *master)
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out, err := cmd.Output()
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if err != nil {
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log.Fatalf("git log grep failed: %v", err)
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}
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if len(out) > 0 {
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if !printedSep {
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fmt.Println(sep1)
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printedSep = true
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}
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fmt.Printf("Branch: %s - MAY BE MERGED to %s\nLog: %s\n\n", branch, *master, logLine)
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_, _ = os.Stdout.Write(out)
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match := reCommit.FindSubmatch(out)
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if len(match) != 0 {
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commit := string(match[1])
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fmt.Println(sep2)
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gitDiffDiff(rev, commit)
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}
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fmt.Println(sep1)
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}
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}
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// * b2-fix-download-url 4209c768a [gone] b2: fix transfers when using download_url
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var reLine = regexp.MustCompile(`^[ *] (\S+)\s+([0-9a-f]+)\s+(?:\[[^]]+\] )?(.*)$`)
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// Run git branch -v, parse the output and check it in the log
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func gitBranch() {
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cmd := exec.Command("git", "branch", "-v")
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cmd.Stderr = os.Stderr
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out, err := cmd.StdoutPipe()
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if err != nil {
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log.Fatalf("git branch pipe failed: %v", err)
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}
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if err := cmd.Start(); err != nil {
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log.Fatalf("git branch failed: %v", err)
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}
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scanner := bufio.NewScanner(out)
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for scanner.Scan() {
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line := scanner.Text()
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match := reLine.FindStringSubmatch(line)
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if len(match) != 4 {
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log.Printf("Invalid line %q", line)
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continue
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}
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branch, rev, logLine := match[1], match[2], match[3]
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if branch == *master {
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continue
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}
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//fmt.Printf("branch = %q, rev = %q, logLine = %q\n", branch, rev, logLine)
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gitLogGrep(branch, rev, logLine)
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("failed reading git branch: %v", err)
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}
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if err := cmd.Wait(); err != nil {
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log.Fatalf("git branch wait failed: %v", err)
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}
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}
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func main() {
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flag.Usage = usage
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flag.Parse()
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args := flag.Args()
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if len(args) != 0 {
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usage()
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log.Fatal("Wrong number of arguments")
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}
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gitBranch()
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}
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