starting a shell

weed-fs/src/cmd/weed/shell.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+  "bufio"
+  "os"
+  "fmt"
+)
+
+func init() {
+  cmdShell.Run = runShell // break init cycle
+}
+
+var cmdShell = &Command{
+  UsageLine: "shell",
+  Short:     "run interactive commands, now just echo",
+  Long: `run interactive commands.
+
+  `,
+}
+
+var (
+)
+
+func runShell(command *Command, args []string) bool {
+  r := bufio.NewReader(os.Stdin)
+  o := bufio.NewWriter(os.Stdout)
+  e := bufio.NewWriter(os.Stderr)
+  prompt := func () { 
+    o.WriteString("> ")
+    o.Flush()
+  };
+  readLine := func () string { 
+    ret, err := r.ReadString('\n')
+    if err != nil { 
+       fmt.Fprint(e,err); 
+       os.Exit(1)
+    }
+    return ret
+  }
+  execCmd := func (cmd string) int { 
+    if cmd != "" { 
+      o.WriteString(cmd)
+    }
+    return 0
+  }
+
+  cmd := ""
+  for { 
+    prompt()
+    cmd = readLine()
+    execCmd(cmd)
+  } 
+  return true
+}

weed-fs/src/cmd/weed/weed.go

@@ -1,12 +1,12 @@
 package main
 
 import (
-  "encoding/json"
+	"encoding/json"
 	"flag"
 	"fmt"
-  "net/http"
 	"io"
 	"log"
+	"net/http"
 	"os"
 	"strings"
 	"sync"
@@ -22,7 +22,8 @@ var port *int
 var commands = []*Command{
 	cmdFix,
 	cmdMaster,
-  cmdUpload,
+	cmdUpload,
+	cmdShell,
 	cmdVersion,
 	cmdVolume,
 }
@@ -50,6 +51,12 @@ func main() {
 
 	if args[0] == "help" {
 		help(args[1:])
+		for _, cmd := range commands {
+			if cmd.Name() == args[1] && cmd.Run != nil {
+				fmt.Fprintf(os.Stderr, "Default Parameters:\n")
+				cmd.Flag.PrintDefaults()
+			}
+		}
 		return
 	}
 
@@ -59,10 +66,10 @@ func main() {
 			cmd.Flag.Parse(args[1:])
 			args = cmd.Flag.Args()
 			if !cmd.Run(cmd, args) {
+				fmt.Fprintf(os.Stderr, "\n")
+				cmd.Flag.Usage()
 				fmt.Fprintf(os.Stderr, "Default Parameters:\n")
 				cmd.Flag.PrintDefaults()
-        fmt.Fprintf(os.Stderr, "\n")
-				cmd.Flag.Usage()
 			}
 			exit()
 			return
@@ -173,15 +180,15 @@ func exitIfErrors() {
 	}
 }
 func writeJson(w http.ResponseWriter, r *http.Request, obj interface{}) {
-  w.Header().Set("Content-Type", "application/javascript")
-  bytes, _ := json.Marshal(obj)
-  callback := r.FormValue("callback")
-  if callback == "" {
-    w.Write(bytes)
-  } else {
-    w.Write([]uint8(callback))
-    w.Write([]uint8("("))
-    fmt.Fprint(w, string(bytes))
-    w.Write([]uint8(")"))
-  }
+	w.Header().Set("Content-Type", "application/javascript")
+	bytes, _ := json.Marshal(obj)
+	callback := r.FormValue("callback")
+	if callback == "" {
+		w.Write(bytes)
+	} else {
+		w.Write([]uint8(callback))
+		w.Write([]uint8("("))
+		fmt.Fprint(w, string(bytes))
+		w.Write([]uint8(")"))
+	}
 }