File size: 2,283 Bytes
c7436b1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | #include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <stdint.h>
int main(int argc, char** argv)
{
int i;
int help = 0;
int unnamed = 0;
int size_set = 0;
char name_in[1024];
char name_out[1024];
FILE *fi, *fo;
if(argc == 1)
help = 1;
// Parse options
for(i=1;i<argc;i++) {
if(argv[i][0] == '-') { // option
switch(argv[i][1]) {
case 'h':
help = 1;
break;
default:
printf("Unknown option %s given.\n", argv[i]);
exit(2);
}
} else {
switch(unnamed) {
case 0:
strncpy(name_in, argv[i], 1024);
break;
case 1:
strncpy(name_out, argv[i], 1024);
break;
default:
printf("Superfluous argument %s.\n", argv[i]);
exit(3);
}
unnamed++;
}
}
if(help) {
fprintf(stderr, "Usage: %s [-h] <infile> <outfile>\n", argv[0]);
fprintf(stderr, "\t-h shows this help.\n");
return 1;
}
fi = fopen(name_in, "rb");
if(!fi) {
fprintf(stderr, "Can't open '%s' as input.\n", name_in);
exit(-1);
}
fo = fopen(name_out, "w");
if(!fo) {
fprintf(stderr, "Can't open '%s' as output.\n", name_out);
exit(-1);
}
int b = 0;
int check = 0;
do {
b = fgetc(fi);
if (b == EOF)
break;
if(check < 0)
check = check ^ 0x801618D5; // makes it positive! ;)
check <<= 1;
check += b;
} while(b != EOF);
char *n = name_in;
char *fn = n;
while(*n) {
if(*n == '\\')
fn = n+1;
else if(*n == '/')
fn = n+1;
else if(*n == '.')
*n = '_';
else if(*n == '-')
*n = '_';
n++;
}
fprintf(fo, "#define CHK_%s (0x%08X)\n", fn, check);
fclose(fo);
fclose(fi);
return 0;
}
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