1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2009 Google Inc. All rights reserved.
3 // https://developers.google.com/protocol-buffers/
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 GzipOutputStream is compatible with command line
36 // gzip or java.util.zip.GzipOutputStream
37 //
38 // Reads data on standard input and writes compressed gzip stream to standard
39 // output.
40
41 #include "config.h"
42
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <fcntl.h>
46
47 #include <google/protobuf/io/gzip_stream.h>
48 #include <google/protobuf/io/zero_copy_stream_impl.h>
49
50 using google::protobuf::io::FileOutputStream;
51 using google::protobuf::io::GzipOutputStream;
52
main(int argc,const char ** argv)53 int main(int argc, const char** argv) {
54 FileOutputStream fout(STDOUT_FILENO);
55 GzipOutputStream out(&fout);
56 int readlen;
57
58 while (true) {
59 void* outptr;
60 int outlen;
61 bool ok;
62 do {
63 ok = out.Next(&outptr, &outlen);
64 if (!ok) {
65 break;
66 }
67 } while (outlen <= 0);
68 readlen = read(STDIN_FILENO, outptr, outlen);
69 if (readlen <= 0) {
70 out.BackUp(outlen);
71 break;
72 }
73 if (readlen < outlen) {
74 out.BackUp(outlen - readlen);
75 }
76 }
77
78 return 0;
79 }
80