freeldr/bootsect/split.c

   1 #include <stdio.h>
   2
   3 FILE    *in;
   4 FILE    *out;
   5 FILE    *new;
   6
   7 int main(int argc, char *argv[])
   8 {
   9         unsigned char   ch;
  10         int                             cnt;
  11         int                             split_offset;
  12
  13         if (argc < 5)
  14         {
  15                 printf("usage: split infile.bin outfile.bin newfile.bin split_offset\n");
  16                 return -1;
  17         }
  18
  19         if ((in = fopen(argv[1], "rb")) == NULL)
  20         {
  21                 printf("Couldn't open data file.\n");
  22                 return -1;
  23         }
  24         if ((out = fopen(argv[2], "wb")) == NULL)
  25         {
  26                 printf("Couldn't open output file.\n");
  27                 return -1;
  28         }
  29         if ((new = fopen(argv[3], "wb")) == NULL)
  30         {
  31                 printf("Couldn't open new file.\n");
  32                 return -1;
  33         }
  34
  35         split_offset = atoi(argv[4]);
  36
  37         for (cnt=0; cnt<split_offset; cnt++)
  38         {
  39                 ch = fgetc(in);
  40                 fputc(ch, out);
  41         }
  42
  43         ch = fgetc(in);
  44         while (!feof(in))
  45         {
  46                 fputc(ch, new);
  47                 ch = fgetc(in);
  48         }
  49
  50         fclose(in);
  51         fclose(out);
  52         fclose(new);
  53
  54         return 0;
  55 }