mirror of https://github.com/perkeep/perkeep.git
129 lines
2.7 KiB
Go
129 lines
2.7 KiB
Go
/*
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Copyright 2011 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"bytes"
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"crypto/sha1"
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"errors"
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"flag"
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"fmt"
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"io"
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"os"
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"camlistore.org/pkg/blobref"
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"camlistore.org/pkg/client"
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)
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type blobCmd struct{}
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func init() {
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RegisterCommand("blob", func(flags *flag.FlagSet) CommandRunner {
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return new(blobCmd)
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})
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}
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func (c *blobCmd) Usage() {
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fmt.Fprintf(stderr, "Usage: camput [globalopts] blob <files>\n camput [globalopts] blob -\n")
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}
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func (c *blobCmd) Examples() []string {
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return []string{
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"<files> (raw, without any metadata)",
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"- (read from stdin)",
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}
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}
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func (c *blobCmd) RunCommand(up *Uploader, args []string) error {
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if len(args) == 0 {
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return errors.New("No files given.")
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}
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for _, arg := range args {
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var (
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handle *client.UploadHandle
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err error
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)
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if arg == "-" {
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handle, err = stdinBlobHandle()
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} else {
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handle, err = fileBlobHandle(up, arg)
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}
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if err != nil {
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return err
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}
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put, err := up.Upload(handle)
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handleResult("blob", put, err)
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continue
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}
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return nil
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}
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func stdinBlobHandle() (uh *client.UploadHandle, err error) {
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var buf bytes.Buffer
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size, err := io.Copy(&buf, stdin)
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if err != nil {
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return
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}
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// TODO(bradfitz,mpl): limit this buffer size?
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file := buf.Bytes()
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h := blobref.NewHash()
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size, err = io.Copy(h, bytes.NewReader(file))
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if err != nil {
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return
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}
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return &client.UploadHandle{
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BlobRef: blobref.FromHash(h),
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Size: size,
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Contents: io.LimitReader(bytes.NewReader(file), size),
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}, nil
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}
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func fileBlobHandle(up *Uploader, path string) (uh *client.UploadHandle, err error) {
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fi, err := up.stat(path)
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if err != nil {
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return
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}
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if fi.Mode()&os.ModeType != 0 {
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return nil, fmt.Errorf("%q is not a regular file", path)
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}
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file, err := up.open(path)
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if err != nil {
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return
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}
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ref, size, err := blobDetails(file)
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if err != nil {
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return nil, err
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}
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return &client.UploadHandle{
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BlobRef: ref,
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Size: size,
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Contents: io.LimitReader(file, size),
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}, nil
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}
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func blobDetails(contents io.ReadSeeker) (bref *blobref.BlobRef, size int64, err error) {
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s1 := sha1.New()
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contents.Seek(0, 0)
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size, err = io.Copy(s1, contents)
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if err == nil {
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bref = blobref.FromHash(s1)
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}
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contents.Seek(0, 0)
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return
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}
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