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|
package main
import (
"embed"
"fmt"
weed_server "github.com/chrislusf/seaweedfs/weed/server"
flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
"io"
"io/fs"
"math/rand"
"os"
"strings"
"sync"
"text/template"
"time"
"unicode"
"unicode/utf8"
"github.com/chrislusf/seaweedfs/weed/command"
"github.com/chrislusf/seaweedfs/weed/glog"
)
var IsDebug *bool
var commands = command.Commands
var exitStatus = 0
var exitMu sync.Mutex
func setExitStatus(n int) {
exitMu.Lock()
if exitStatus < n {
exitStatus = n
}
exitMu.Unlock()
}
//go:embed static
var static embed.FS
func init() {
weed_server.StaticFS, _ = fs.Sub(static, "static")
}
func main() {
glog.MaxSize = 1024 * 1024 * 32
rand.Seed(time.Now().UnixNano())
flag.Usage = usage
flag.Parse()
args := flag.Args()
if len(args) < 1 {
usage()
}
if args[0] == "help" {
help(args[1:])
for _, cmd := range commands {
if len(args) >= 2 && cmd.Name() == args[1] && cmd.Run != nil {
fmt.Fprintf(os.Stderr, "Default Parameters:\n")
cmd.Flag.PrintDefaults()
}
}
return
}
for _, cmd := range commands {
if cmd.Name() == args[0] && cmd.Run != nil {
cmd.Flag.Usage = func() { cmd.Usage() }
cmd.Flag.Parse(args[1:])
args = cmd.Flag.Args()
IsDebug = cmd.IsDebug
if !cmd.Run(cmd, args) {
fmt.Fprintf(os.Stderr, "\n")
cmd.Flag.Usage()
fmt.Fprintf(os.Stderr, "Default Parameters:\n")
cmd.Flag.PrintDefaults()
}
exit()
return
}
}
fmt.Fprintf(os.Stderr, "weed: unknown subcommand %q\nRun 'weed help' for usage.\n", args[0])
setExitStatus(2)
exit()
}
var usageTemplate = `
SeaweedFS: store billions of files and serve them fast!
Usage:
weed command [arguments]
The commands are:
{{range .}}{{if .Runnable}}
{{.Name | printf "%-11s"}} {{.Short}}{{end}}{{end}}
Use "weed help [command]" for more information about a command.
`
var helpTemplate = `{{if .Runnable}}Usage: weed {{.UsageLine}}
{{end}}
{{.Long}}
`
// tmpl executes the given template text on data, writing the result to w.
func tmpl(w io.Writer, text string, data interface{}) {
t := template.New("top")
t.Funcs(template.FuncMap{"trim": strings.TrimSpace, "capitalize": capitalize})
template.Must(t.Parse(text))
if err := t.Execute(w, data); err != nil {
panic(err)
}
}
func capitalize(s string) string {
if s == "" {
return s
}
r, n := utf8.DecodeRuneInString(s)
return string(unicode.ToTitle(r)) + s[n:]
}
func printUsage(w io.Writer) {
tmpl(w, usageTemplate, commands)
}
func usage() {
printUsage(os.Stderr)
fmt.Fprintf(os.Stderr, "For Logging, use \"weed [logging_options] [command]\". The logging options are:\n")
flag.PrintDefaults()
os.Exit(2)
}
// help implements the 'help' command.
func help(args []string) {
if len(args) == 0 {
printUsage(os.Stdout)
// not exit 2: succeeded at 'weed help'.
return
}
if len(args) != 1 {
fmt.Fprintf(os.Stderr, "usage: weed help command\n\nToo many arguments given.\n")
os.Exit(2) // failed at 'weed help'
}
arg := args[0]
for _, cmd := range commands {
if cmd.Name() == arg {
tmpl(os.Stdout, helpTemplate, cmd)
// not exit 2: succeeded at 'weed help cmd'.
return
}
}
fmt.Fprintf(os.Stderr, "Unknown help topic %#q. Run 'weed help'.\n", arg)
os.Exit(2) // failed at 'weed help cmd'
}
var atexitFuncs []func()
func atexit(f func()) {
atexitFuncs = append(atexitFuncs, f)
}
func exit() {
for _, f := range atexitFuncs {
f()
}
os.Exit(exitStatus)
}
func debug(params ...interface{}) {
glog.V(4).Infoln(params...)
}
|
