test.cc

来自「linux 2.6kernel下面png庫」· CC 代码 · 共 51 行

/*
 * Test program for gzifstream and gzofstream
 *
 * by Ludwig Schwardt <[e-mail]>
 * original version by Kevin Ruland <[e-mail]>
 */

#include "zfstream.h"
#include <iostream>      // for cout

int main() {

  gzofstream outf;
  gzifstream inf;
  char buf[80];

  outf.open("test1.txt.gz");
  outf << "The quick brown fox sidestepped the lazy canine\n"
       << 1.3 << "\nPlan " << 9 << std::endl;
  outf.close();
  std::cout << "Wrote the following message to 'test1.txt.gz' (check with zcat or zless):\n"
            << "The quick brown fox sidestepped the lazy canine\n"
            << 1.3 << "\nPlan " << 9 << std::endl;

  std::cout << "\nReading 'test1.txt.gz' (buffered) produces:\n";
  inf.open("test1.txt.gz");
  while (inf.getline(buf,80,'\n')) {
    std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
  }
  inf.close();

  outf.rdbuf()->pubsetbuf(0,0);
  outf.open("test2.txt.gz");
  outf << setcompression(Z_NO_COMPRESSION)
       << "The quick brown fox sidestepped the lazy canine\n"
       << 1.3 << "\nPlan " << 9 << std::endl;
  outf.close();
  std::cout << "\nWrote the same message to 'test2.txt.gz' in uncompressed form";

  std::cout << "\nReading 'test2.txt.gz' (unbuffered) produces:\n";
  inf.rdbuf()->pubsetbuf(0,0);
  inf.open("test2.txt.gz");
  while (inf.getline(buf,80,'\n')) {
    std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
  }
  inf.close();

  return 0;

}