bcat_main.cc

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 /*                                                                       */
 /*                 Author: Richard Caley (rjc@cstr.ed.ac.uk)             */
 /*                   Date: Thu Aug 14 1997                               */
 /* --------------------------------------------------------------------  */
 /* A simple file concatenator which does everything in binary            */
 /* mode. For use in the tests on Windows etc.                            */
 /*                                                                       */
 /*************************************************************************/


#include <cstdio>
#include "EST.h"
#include "EST_String.h"
#include "EST_error.h"

#define BUFFER_SIZE (1024)


/** @name <command>bcat</command> <emphasis>Binary safe version of cat</emphasis>
    @id bcat-manual
  * @toc
 */

//@{


/**@name Synopsis
  */
//@{

//@synopsis

/**
bcat is a trivial file concatenation program. It exists to allow testing
of various file splitting operations under the cygwin environment on Windows
where the distinction between binary and text data is important.
 */

//@}

/**@name OPTIONS
  */
//@{

//@options

//@}


int main(int argc, char *argv[]) 
{ 
    EST_StrList files;
    EST_Option settings, cmd_line;

    parse_command_line
    (argc, argv, 
     EST_String("-o [ofile] [files...]\n")+
     "Summary; concatenate files in binary mode\n"+
     "-o <ofile>       Ouptut file of binary data\n",
     files, cmd_line);

    EST_String out_file;

    if (cmd_line.present("-o"))
      out_file = cmd_line.val("-o");
    else
      EST_error("No output file specified");

    FILE *dest;

    if ((dest=fopen(out_file, "wb")) == NULL)
      EST_sys_error("Can't create '%s'", (const char *)out_file);

    EST_Litem *item;

    for(item=files.head(); item; item = item->next())
      {
    FILE *src;

    if ((src=fopen(files(item), "rb"))==NULL)
      EST_sys_error("can't read '%s'", (const char *)files(item));

    unsigned int n;
    char buf[BUFFER_SIZE];

    while((n=fread(buf, sizeof(char), BUFFER_SIZE, src)) >0)
      if (fwrite(buf, sizeof(char), n, dest) < n)
        EST_sys_error("write error");

    fclose(src);
      }

    fclose(dest);

    return 0;
}