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 <stdio.h>
42 #include <stdlib.h>
43 #include <fcntl.h>
44
45 #ifdef _WIN32
46 #ifndef STDIN_FILENO
47 #define STDIN_FILENO 0
48 #endif
49 #ifndef STDOUT_FILENO
50 #define STDOUT_FILENO 1
51 #endif
52 #endif
53
54 #include <google/protobuf/io/gzip_stream.h>
55 #include <google/protobuf/io/zero_copy_stream_impl.h>
56
57 using google::protobuf::io::FileOutputStream;
58 using google::protobuf::io::GzipOutputStream;
59
main(int argc,const char ** argv)60 int main(int argc, const char** argv) {
61 FileOutputStream fout(STDOUT_FILENO);
62 GzipOutputStream out(&fout);
63 int readlen;
64
65 while (true) {
66 void* outptr;
67 int outlen;
68 bool ok;
69 do {
70 ok = out.Next(&outptr, &outlen);
71 if (!ok) {
72 break;
73 }
74 } while (outlen <= 0);
75 readlen = read(STDIN_FILENO, outptr, outlen);
76 if (readlen <= 0) {
77 out.BackUp(outlen);
78 break;
79 }
80 if (readlen < outlen) {
81 out.BackUp(outlen - readlen);
82 }
83 }
84
85 return 0;
86 }
87