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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define C_ID_FIRSTCHAR "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
int main(int argc, char *argv[])
{
char *fileprefix = "y";
char *symbolprefix = "yy";
int header = 0;
int lines = 1;
int debug = 0;
int verbose = 0;
int c;
while ((c = getopt(argc, argv, "bdlptv")) != -1) {
switch (c) {
case 'b':
/* Change file prefix */
fileprefix = optarg;
break;
case 'd':
/* Write a header file */
header = 1;
break;
case 'l':
/* Omit #line directives */
lines = 0;
break;
case 'p':
/* Change symbol prefix */
symbolprefix = optarg;
if (!strchr(C_ID_FIRSTCHAR, *symbolprefix)) {
printf("'%s' is not a valid prefix\n", optarg);
return 1;
}
break;
case 't':
/* Include debugging code */
debug = 1;
break;
case 'v':
/* Output a description file */
verbose = 1;
break;
default:
return 1;
}
}
if (optind != argc - 1) {
fprintf(stderr, "Must specify exactly one grammar file\n");
return 1;
}
return 0;
}
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