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 (at) 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 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
