test/fileseek.c

   1 #include <stdio.h>
   2 #include <proto/dos.h>
   3 #include <dos/dos.h>
   4 #include <stdlib.h>
   5
   6 int main()
   7 {
   8 FILE *fd;
   9 char buffer[32];
  10 int i;
  11 BPTR file;
  12
  13   fd = fopen( "seek.txt", "wb" );
  14   if ( !fd )
  15   {
  16     fprintf( stderr, "Could not write test file seek.txt\n" );
  17     exit(-1);
  18   }
  19   fprintf( fd, "() does not work!\n" );
  20   fclose(fd);
  21
  22 /* fseek() */
  23   fd = fopen( "seek.txt", "rb" );
  24   if ( !fd )
  25   {
  26     fprintf( stderr, "Could not open test file seek.txt\n" );
  27     exit(-1);
  28   }
  29   i = fread( buffer, 1, 1, fd );
  30 //printf("pos=%ld\n",ftell(fd));
  31   i += fread( &buffer[1], 1, 6, fd );
  32   if( i != 7 )
  33   {
  34     fprintf( stderr, "Wanted to fread() %d chars, but could only get %d!\n", 6, i-1 );
  35     exit(-1);
  36   }
  37   fseek( fd, 4, SEEK_CUR );
  38   i = fread( &buffer[7], 1, 11, fd );
  39   buffer[7+i]=0;
  40   printf( "fseek%s", buffer );
  41   fclose(fd);
  42
  43 /* Seek() */
  44   file = Open( "seek.txt", MODE_OLDFILE );
  45   i = Read( file, buffer, 7 );
  46   Seek( file, 4, OFFSET_CURRENT );
  47   i += Read( file, &buffer[7], 11 );
  48   buffer[i] = 0;
  49   printf( "\nSeek%s", buffer );
  50
  51   return 0;
  52 }