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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
//go:build ignore
package main
import (
"fmt"
"log"
"os"
"os/exec"
"path/filepath"
"regexp"
"strconv"
"strings"
"code.gitea.io/gitea/build/codeformat"
)
// Windows has a limitation for command line arguments, the size can not exceed 32KB.
// So we have to feed the files to some tools (like gofmt) batch by batch
// We also introduce a `gitea-fmt` command, it does better import formatting than gofmt/goimports. `gitea-fmt` calls `gofmt` internally.
var optionLogVerbose bool
func logVerbose(msg string, args ...interface{}) {
if optionLogVerbose {
log.Printf(msg, args...)
}
}
func passThroughCmd(cmd string, args []string) error {
foundCmd, err := exec.LookPath(cmd)
if err != nil {
log.Fatalf("can not find cmd: %s", cmd)
}
c := exec.Cmd{
Path: foundCmd,
Args: append([]string{cmd}, args...),
Stdin: os.Stdin,
Stdout: os.Stdout,
Stderr: os.Stderr,
}
return c.Run()
}
type fileCollector struct {
dirs []string
includePatterns []*regexp.Regexp
excludePatterns []*regexp.Regexp
batchSize int
}
func newFileCollector(fileFilter string, batchSize int) (*fileCollector, error) {
co := &fileCollector{batchSize: batchSize}
if fileFilter == "go-own" {
co.dirs = []string{
"build",
"cmd",
"contrib",
"tests",
"models",
"modules",
"routers",
"services",
"tools",
}
co.includePatterns = append(co.includePatterns, regexp.MustCompile(`.*\.go$`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`.*\bbindata\.go$`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`tests/gitea-repositories-meta`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`tests/integration/migration-test`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`modules/git/tests`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`models/fixtures`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`models/migrations/fixtures`))
co.excludePatterns = append(co.excludePatterns, regexp.MustCompile(`services/gitdiff/testdata`))
}
if co.dirs == nil {
return nil, fmt.Errorf("unknown file-filter: %s", fileFilter)
}
return co, nil
}
func (fc *fileCollector) matchPatterns(path string, regexps []*regexp.Regexp) bool {
path = strings.ReplaceAll(path, "\\", "/")
for _, re := range regexps {
if re.MatchString(path) {
return true
}
}
return false
}
func (fc *fileCollector) collectFiles() (res [][]string, err error) {
var batch []string
for _, dir := range fc.dirs {
err = filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
include := len(fc.includePatterns) == 0 || fc.matchPatterns(path, fc.includePatterns)
exclude := fc.matchPatterns(path, fc.excludePatterns)
process := include && !exclude
if !process {
if d.IsDir() {
if exclude {
logVerbose("exclude dir %s", path)
return filepath.SkipDir
}
// for a directory, if it is not excluded explicitly, we should walk into
return nil
}
// for a file, we skip it if it shouldn't be processed
logVerbose("skip process %s", path)
return nil
}
if d.IsDir() {
// skip dir, we don't add dirs to the file list now
return nil
}
if len(batch) >= fc.batchSize {
res = append(res, batch)
batch = nil
}
batch = append(batch, path)
return nil
})
if err != nil {
return nil, err
}
}
res = append(res, batch)
return res, nil
}
// substArgFiles expands the {file-list} to a real file list for commands
func substArgFiles(args, files []string) []string {
for i, s := range args {
if s == "{file-list}" {
newArgs := append(args[:i], files...)
newArgs = append(newArgs, args[i+1:]...)
return newArgs
}
}
return args
}
func exitWithCmdErrors(subCmd string, subArgs []string, cmdErrors []error) {
for _, err := range cmdErrors {
if err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
exitCode := exitError.ExitCode()
log.Printf("run command failed (code=%d): %s %v", exitCode, subCmd, subArgs)
os.Exit(exitCode)
} else {
log.Fatalf("run command failed (err=%s) %s %v", err, subCmd, subArgs)
}
}
}
}
func parseArgs() (mainOptions map[string]string, subCmd string, subArgs []string) {
mainOptions = map[string]string{}
for i := 1; i < len(os.Args); i++ {
arg := os.Args[i]
if arg == "" {
break
}
if arg[0] == '-' {
arg = strings.TrimPrefix(arg, "-")
arg = strings.TrimPrefix(arg, "-")
fields := strings.SplitN(arg, "=", 2)
if len(fields) == 1 {
mainOptions[fields[0]] = "1"
} else {
mainOptions[fields[0]] = fields[1]
}
} else {
subCmd = arg
subArgs = os.Args[i+1:]
break
}
}
return
}
func showUsage() {
fmt.Printf(`Usage: %[1]s [options] {command} [arguments]
Options:
--verbose
--file-filter=go-own
--batch-size=100
Commands:
%[1]s gofmt ...
Arguments:
{file-list} the file list
Example:
%[1]s gofmt -s -d {file-list}
`, "file-batch-exec")
}
func getGoVersion() string {
goModFile, err := os.ReadFile("go.mod")
if err != nil {
log.Fatalf(`Faild to read "go.mod": %v`, err)
os.Exit(1)
}
goModVersionRegex := regexp.MustCompile(`go \d+\.\d+`)
goModVersionLine := goModVersionRegex.Find(goModFile)
return string(goModVersionLine[3:])
}
func newFileCollectorFromMainOptions(mainOptions map[string]string) (fc *fileCollector, err error) {
fileFilter := mainOptions["file-filter"]
if fileFilter == "" {
fileFilter = "go-own"
}
batchSize, _ := strconv.Atoi(mainOptions["batch-size"])
if batchSize == 0 {
batchSize = 100
}
return newFileCollector(fileFilter, batchSize)
}
func containsString(a []string, s string) bool {
for _, v := range a {
if v == s {
return true
}
}
return false
}
func giteaFormatGoImports(files []string, doWriteFile bool) error {
for _, file := range files {
if err := codeformat.FormatGoImports(file, doWriteFile); err != nil {
log.Printf("failed to format go imports: %s, err=%v", file, err)
return err
}
}
return nil
}
func main() {
mainOptions, subCmd, subArgs := parseArgs()
if subCmd == "" {
showUsage()
os.Exit(1)
}
optionLogVerbose = mainOptions["verbose"] != ""
fc, err := newFileCollectorFromMainOptions(mainOptions)
if err != nil {
log.Fatalf("can not create file collector: %s", err.Error())
}
fileBatches, err := fc.collectFiles()
if err != nil {
log.Fatalf("can not collect files: %s", err.Error())
}
processed := 0
var cmdErrors []error
for _, files := range fileBatches {
if len(files) == 0 {
break
}
substArgs := substArgFiles(subArgs, files)
logVerbose("batch cmd: %s %v", subCmd, substArgs)
switch subCmd {
case "gitea-fmt":
if containsString(subArgs, "-d") {
log.Print("the -d option is not supported by gitea-fmt")
}
cmdErrors = append(cmdErrors, giteaFormatGoImports(files, containsString(subArgs, "-w")))
cmdErrors = append(cmdErrors, passThroughCmd("go", append([]string{"run", os.Getenv("GOFUMPT_PACKAGE"), "-extra", "-lang", getGoVersion()}, substArgs...)))
default:
log.Fatalf("unknown cmd: %s %v", subCmd, subArgs)
}
processed += len(files)
}
logVerbose("processed %d files", processed)
exitWithCmdErrors(subCmd, subArgs, cmdErrors)
}
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