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 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 50using google::protobuf::io::FileOutputStream; 51using google::protobuf::io::GzipOutputStream; 52 53int 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