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| /* | |
| Lsr: list recursively. | |
| lsr [-d | -fd] [name ...] | |
| For each directory argument, lsr recursively lists the contents of the | |
| directory; for each file argument, lsr repeats its name. When no argument | |
| is given, the current directory is listed. | |
| Options: | |
| -d only print directories | |
| -fd print both files and directories | |
| -l list in long format; name mode mtime size | |
| */ | |
| package main | |
| import ( | |
| "flag" | |
| "fmt" | |
| "log" | |
| "os" | |
| "path/filepath" | |
| _ "mgk.ro/log" | |
| ) | |
| var ( | |
| flagD = flag.Bool("d", false, "only print directories") | |
| flagFD = flag.Bool("fd", false, "print both files and directories") | |
| flagL = flag.Bool("l", false, "long format") | |
| ) | |
| var usageString = `usage: lsr [-d | -fd | -l] [name ...] | |
| Options: | |
| ` | |
| func usage() { | |
| fmt.Fprint(os.Stderr, usageString) | |
| flag.PrintDefaults() | |
| os.Exit(1) | |
| } | |
| func prname(path string, f os.FileInfo) error { | |
| if f.IsDir() && path[len(path)-1] != '/' { | |
| path = path + "/" | |
| } | |
| if *flagL { | |
| mode := f.Mode() & 0x1FF | |
| size := f.Size() | |
| mtime := f.ModTime().Unix() | |
| fmt.Printf("%s %o %v %v\n", path, mode, mtime, size) | |
| return nil | |
| } | |
| fmt.Println(path) | |
| return nil | |
| } | |
| func pr(path string, f os.FileInfo, err error) error { | |
| if err != nil { | |
| log.Println(err) | |
| return nil | |
| } | |
| if *flagFD { | |
| return prname(path, f) | |
| } | |
| if *flagD && f.IsDir() { | |
| return prname(path, f) | |
| } | |
| if !*flagD && !f.IsDir() { | |
| return prname(path, f) | |
| } | |
| return nil | |
| } | |
| func main() { | |
| flag.Usage = usage | |
| flag.Parse() | |
| if flag.NArg() == 0 { | |
| filepath.Walk(".", pr) | |
| return | |
| } | |
| for _, v := range flag.Args() { | |
| filepath.Walk(v, pr) | |
| } | |
| } |