mirror of https://github.com/marqs85/ossc.git
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned char block[256];
|
|
unsigned int csum;
|
|
|
|
int fd_i, bc;
|
|
FILE *fd_o;
|
|
struct stat fileinfo;
|
|
|
|
unsigned int i, j;
|
|
|
|
if (argc != 4) {
|
|
printf("usage: %s width binfile hexfile\n", argv[0]);
|
|
return -1;
|
|
}
|
|
|
|
bc = atoi(argv[1]);
|
|
if ((bc < 1) || (bc > 255)) {
|
|
printf("byte count per line must be 1-255");
|
|
return -1;
|
|
}
|
|
|
|
if ((fd_i = open(argv[2], O_RDONLY)) == -1 || fstat(fd_i, &fileinfo) == -1) {
|
|
printf("Couldn't open file\n");
|
|
return -1;
|
|
}
|
|
|
|
printf("size: %u bytes\n", fileinfo.st_size);
|
|
|
|
if ((fd_o = fopen(argv[3], "w")) == NULL) {
|
|
printf("invalid outfile\n");
|
|
return -1;
|
|
}
|
|
|
|
for (i=0; i<fileinfo.st_size; i+=bc) {
|
|
read(fd_i, (void*)block, bc);
|
|
csum = bc+((i/bc)>>8)+((i/bc)&0xff);
|
|
for (j=0; j<bc; j++)
|
|
csum += block[j];
|
|
csum &= 0xff;
|
|
csum = (~csum+1)&0xff;
|
|
fprintf(fd_o, ":%.2X%.4X00", bc, i/bc);
|
|
for (j=0; j<bc; j++)
|
|
fprintf(fd_o, "%.2X", block[bc-1-j]);
|
|
fprintf(fd_o, "%.2X\n", csum);
|
|
}
|
|
|
|
fprintf(fd_o, ":00000001FF\n");
|
|
|
|
fclose(fd_o);
|
|
close(fd_i);
|
|
|
|
return 0;
|
|
}
|