141 lines
3.2 KiB
Go
141 lines
3.2 KiB
Go
package main
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import (
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"context"
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"flag"
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"fmt"
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"net/url"
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"os"
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"path/filepath"
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"strings"
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"github.com/go-git/go-git/v5"
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"github.com/go-git/go-git/v5/plumbing/filemode"
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"github.com/go-git/go-git/v5/plumbing/object"
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"github.com/go-git/go-git/v5/storage/memory"
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yamlcodec "go.unistack.org/micro-codec-yaml/v3"
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flagconfig "go.unistack.org/micro-config-flag/v3"
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"go.unistack.org/micro/v3/config"
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"go.unistack.org/micro/v3/logger"
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"go.unistack.org/micro/v3/logger/slog"
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)
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type Config struct {
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DstDir string `default:"." flag:"name=dstdir,desc='destination dir',default='.'"`
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Action string `default:"update" flag:"name=action,desc='action',default='update'"`
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Clean bool `default:"false" flag:"name=clean,desc='cleaup destination dir',default='false'"`
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}
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func main() {
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var err error
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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cfg := &Config{}
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log := slog.NewLogger()
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if err = log.Init(); err != nil {
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log.Fatal(ctx, err)
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}
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logger.DefaultLogger = log
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if err = config.Load(ctx, []config.Config{
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config.NewConfig(config.Struct(cfg)),
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flagconfig.NewConfig(config.Struct(cfg), config.Codec(yamlcodec.NewCodec())),
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}); err != nil {
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log.Fatal(ctx, err)
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}
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if cfg.DstDir == "" || cfg.DstDir == "." {
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if cfg.DstDir, err = os.Getwd(); err != nil {
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log.Fatal(ctx, err)
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}
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log.Info(ctx, "dstdir not specified, use current dir: %s", cfg.DstDir)
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}
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flagUrl := strings.Join(flag.Args(), " ")
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u, err := url.Parse(flagUrl)
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if err != nil {
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log.Fatal(ctx, err)
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}
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var rev string
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if idx := strings.Index(u.Path, "@"); idx > 0 {
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rev = u.Path[idx+1:]
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}
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cloneOpts := &git.CloneOptions{
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URL: flagUrl,
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Progress: os.Stdout,
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}
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if len(rev) == 0 {
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cloneOpts.SingleBranch = true
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cloneOpts.Depth = 1
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}
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if err := cloneOpts.Validate(); err != nil {
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log.Fatal(ctx, err)
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}
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log.Info(ctx, `try to fetch `+flagUrl)
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repo, err := git.CloneContext(ctx, memory.NewStorage(), nil, cloneOpts)
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if err != nil {
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log.Fatal(ctx, err)
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}
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ref, err := repo.Head()
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if err != nil {
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log.Fatal(ctx, "failed to get head: %v", err)
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}
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fmt.Println(ref.Hash())
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commit, err := repo.CommitObject(ref.Hash())
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if err != nil {
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log.Fatal(ctx, "failed to get commit: %v", err)
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}
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tree, err := commit.Tree()
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if err != nil {
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log.Fatal(ctx, err)
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}
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if err := os.MkdirAll(cfg.DstDir, os.FileMode(0o755)); err != nil {
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log.Fatal(ctx, "failed to create dir: %v", err)
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}
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if cfg.Clean {
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if err := cleanDir(ctx, cfg.DstDir); err != nil {
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log.Fatal(ctx, "failed to clean dir: %v", err)
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}
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}
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err = tree.Files().ForEach(func(file *object.File) error {
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if file == nil {
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return fmt.Errorf("file pointer is nil")
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}
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fmode, err := file.Mode.ToOSFileMode()
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if err != nil {
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return err
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}
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switch file.Mode {
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case filemode.Executable:
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return writeFile(ctx, file, cfg.DstDir, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, fmode)
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case filemode.Dir:
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return os.MkdirAll(filepath.Join(cfg.DstDir, file.Name), fmode)
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case filemode.Regular:
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return writeFile(ctx, file, cfg.DstDir, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, fmode)
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default:
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return fmt.Errorf("unsupported filetype %v for %s", file.Mode, file.Name)
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}
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})
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if err != nil {
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log.Fatal(ctx, "failed to exctract file: %v", err)
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}
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}
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