zcgunzip.cc revision fbaaef999ba563838ebd00874ed8a1c01fbf286d 
1// Protocol Buffers - Google's data interchange format
2// Copyright 2009 Google Inc.  All rights reserved.
3// http://code.google.com/p/protobuf/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
9//     * Redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer.
11//     * Redistributions in binary form must reproduce the above
12// copyright notice, this list of conditions and the following disclaimer
13// in the documentation and/or other materials provided with the
14// distribution.
15//     * Neither the name of Google Inc. nor the names of its
16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// Author: brianolson@google.com (Brian Olson)
32//  Based on original Protocol Buffers design by
33//  Sanjay Ghemawat, Jeff Dean, and others.
34//
35// Test program to verify that GzipInputStream is compatible with command line
36// gunzip or java.util.zip.GzipInputStream
37//
38// Reads gzip stream on standard input and writes decompressed data to standard
39// output.
40
41#include "config.h"
42
43#include <assert.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <fcntl.h>
47
48#include <google/protobuf/io/gzip_stream.h>
49#include <google/protobuf/io/zero_copy_stream_impl.h>
50
51using google::protobuf::io::FileInputStream;
52using google::protobuf::io::GzipInputStream;
53
54int main(int argc, const char** argv) {
55  FileInputStream fin(STDIN_FILENO);
56  GzipInputStream in(&fin);
57
58  while (true) {
59    const void* inptr;
60    int inlen;
61    bool ok;
62    ok = in.Next(&inptr, &inlen);
63    if (!ok) {
64      break;
65    }
66    if (inlen > 0) {
67      int err = write(STDOUT_FILENO, inptr, inlen);
68      assert(err == inlen);
69    }
70  }
71
72  return 0;
73}
74