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mirror of https://github.com/rclone/rclone synced 2024-11-30 09:10:05 +01:00
rclone/bin/check-merged.go
2021-09-09 20:43:59 +03:00

138 lines
3.1 KiB
Go

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