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#include <getopt.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <sysexits.h>
#include <unistd.h>
void parse(int); /* grammar.y */
extern FILE *yyin;
static char **av;
static int ac, input;
int main(int argc, char **argv) {
int c, outfd;
char *outpath = "lsf.out";
while((c = getopt(argc, argv, "o:")) != -1) {
switch(c) {
case 'o':
outpath = optarg;
break;
default:
fprintf(stderr, "%s: unknown option character %c\n", argv[0], c);
break;
}
}
if(optind < argc)
if(!(yyin = fopen(argv[optind], "r"))) {
perror("fopen");
exit(EX_NOINPUT);
}
av = argv;
ac = argc;
input = optind + 1;
if((outfd = open(outpath, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0) {
perror("open");
exit(EX_CANTCREAT);
}
parse(outfd);
if(close(outfd)) {
perror("close");
exit(EX_OSERR);
}
exit(0);
}
int yywrap() {
if(input >= ac)
return 1;
fclose(yyin);
if(!(yyin = fopen(av[input++], "r"))) {
perror("fopen");
exit(EX_NOINPUT);
}
return 0;
}
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