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 57using google::protobuf::io::FileOutputStream; 58using google::protobuf::io::GzipOutputStream; 59 60int 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