camput: delete command, to send a delete claim

http://camlistore.org/issue/191

Change-Id: I053ab468420cc173e6122909bf3a0b16e4d43224

cmd/camput/delete.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2013 The Camlistore Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"camlistore.org/pkg/blob"
+	"camlistore.org/pkg/cmdmain"
+	"camlistore.org/pkg/schema"
+)
+
+type deleteCmd struct {
+	up *Uploader
+}
+
+func init() {
+	cmdmain.RegisterCommand("delete", func(flags *flag.FlagSet) cmdmain.CommandRunner {
+		cmd := new(deleteCmd)
+		return cmd
+	})
+}
+
+func (c *deleteCmd) Describe() string {
+	return "Create and upload a delete claim."
+}
+
+func (c *deleteCmd) Usage() {
+	cmdmain.Errorf("Usage: camput [globalopts] delete <blobref1> [blobref2]...")
+}
+
+func (c *deleteCmd) RunCommand(args []string) error {
+	if len(args) < 1 {
+		return cmdmain.UsageError("Need at least one blob to delete.")
+	}
+	if err := delete(args); err != nil {
+		return err
+	}
+	return nil
+}
+
+func delete(args []string) error {
+	for _, arg := range args {
+		br, ok := blob.Parse(arg)
+		if !ok {
+			return fmt.Errorf("Error parsing blobref %q", arg)
+		}
+		bb := schema.NewDeleteClaim(br)
+		put, err := getUploader().UploadAndSignBlob(bb)
+		if err := handleResult(bb.Type(), put, err); err != nil {
+			return err
+		}
+	}
+	return nil
+}