You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
145 lines
2.7 KiB
145 lines
2.7 KiB
package shell
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path"
|
|
"regexp"
|
|
"sort"
|
|
"strings"
|
|
|
|
"github.com/peterh/liner"
|
|
)
|
|
|
|
var (
|
|
line *liner.State
|
|
historyPath = path.Join(os.TempDir(), "weed-shell")
|
|
)
|
|
|
|
func RunShell(options ShellOptions) {
|
|
|
|
line = liner.NewLiner()
|
|
defer line.Close()
|
|
|
|
line.SetCtrlCAborts(true)
|
|
|
|
setCompletionHandler()
|
|
loadHistory()
|
|
|
|
defer saveHistory()
|
|
|
|
reg, _ := regexp.Compile(`'.*?'|".*?"|\S+`)
|
|
|
|
commandEnv := NewCommandEnv(options)
|
|
|
|
go commandEnv.MasterClient.KeepConnectedToMaster()
|
|
commandEnv.MasterClient.WaitUntilConnected()
|
|
|
|
for {
|
|
cmd, err := line.Prompt("> ")
|
|
if err != nil {
|
|
if err != io.EOF {
|
|
fmt.Printf("%v\n", err)
|
|
}
|
|
return
|
|
}
|
|
|
|
cmds := reg.FindAllString(cmd, -1)
|
|
if len(cmds) == 0 {
|
|
continue
|
|
} else {
|
|
line.AppendHistory(cmd)
|
|
|
|
args := make([]string, len(cmds[1:]))
|
|
|
|
for i := range args {
|
|
args[i] = strings.Trim(string(cmds[1+i]), "\"'")
|
|
}
|
|
|
|
cmd := strings.ToLower(cmds[0])
|
|
if cmd == "help" || cmd == "?" {
|
|
printHelp(cmds)
|
|
} else if cmd == "exit" || cmd == "quit" {
|
|
return
|
|
} else {
|
|
foundCommand := false
|
|
for _, c := range Commands {
|
|
if c.Name() == cmd || c.Name() == "fs."+cmd {
|
|
if err := c.Do(args, commandEnv, os.Stdout); err != nil {
|
|
fmt.Fprintf(os.Stderr, "error: %v\n", err)
|
|
}
|
|
foundCommand = true
|
|
}
|
|
}
|
|
if !foundCommand {
|
|
fmt.Fprintf(os.Stderr, "unknown command: %v\n", cmd)
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
func printGenericHelp() {
|
|
msg :=
|
|
`Type: "help <command>" for help on <command>
|
|
`
|
|
fmt.Print(msg)
|
|
|
|
sort.Slice(Commands, func(i, j int) bool {
|
|
return strings.Compare(Commands[i].Name(), Commands[j].Name()) < 0
|
|
})
|
|
for _, c := range Commands {
|
|
helpTexts := strings.SplitN(c.Help(), "\n", 2)
|
|
fmt.Printf(" %-30s\t# %s \n", c.Name(), helpTexts[0])
|
|
}
|
|
}
|
|
|
|
func printHelp(cmds []string) {
|
|
args := cmds[1:]
|
|
if len(args) == 0 {
|
|
printGenericHelp()
|
|
} else if len(args) > 1 {
|
|
fmt.Println()
|
|
} else {
|
|
cmd := strings.ToLower(args[0])
|
|
|
|
sort.Slice(Commands, func(i, j int) bool {
|
|
return strings.Compare(Commands[i].Name(), Commands[j].Name()) < 0
|
|
})
|
|
|
|
for _, c := range Commands {
|
|
if c.Name() == cmd {
|
|
fmt.Printf(" %s\t# %s\n", c.Name(), c.Help())
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func setCompletionHandler() {
|
|
line.SetCompleter(func(line string) (c []string) {
|
|
for _, i := range Commands {
|
|
if strings.HasPrefix(i.Name(), strings.ToLower(line)) {
|
|
c = append(c, i.Name())
|
|
}
|
|
}
|
|
return
|
|
})
|
|
}
|
|
|
|
func loadHistory() {
|
|
if f, err := os.Open(historyPath); err == nil {
|
|
line.ReadHistory(f)
|
|
f.Close()
|
|
}
|
|
}
|
|
|
|
func saveHistory() {
|
|
if f, err := os.Create(historyPath); err != nil {
|
|
fmt.Printf("Error writing history file: %v\n", err)
|
|
} else {
|
|
line.WriteHistory(f)
|
|
f.Close()
|
|
}
|
|
}
|