GzipFileReader.cpp

#include <jem/base/System.h>
#include <jem/io/FileName.h>
#include <jem/io/FileWriter.h>
#include <jem/io/GzipFileReader.h>


using namespace jem;
using namespace jem::io;


//-----------------------------------------------------------------------
//   unzip
//-----------------------------------------------------------------------


int unzip ( int argc, char** argv )
{
  const int    N = 128;

  Ref<Reader>  input;
  Ref<Writer>  output;
  char         buf[N];


  for ( int i = 1; i < argc; i++ )
  {
    String  fname = argv[i];
    idx_t   k     = FileName::findSuffix ( fname );

    if ( k < 0 || fname[slice(k,END)] != ".gz" )
    {
      continue;
    }

    input  = newInstance<GzipFileReader> ( fname );
    output = newInstance<FileWriter>     ( fname[slice(BEGIN,k)] );

    k = input->read ( buf, N );

    while ( k > 0 )
    {
      output->write   ( buf, k );
      k = input->read ( buf, N );
    }
  }

  return 0;
}


//-----------------------------------------------------------------------
//   main
//-----------------------------------------------------------------------


int main ( int argc, char** argv )
{
  return System::exec ( & unzip, argc, argv );
}