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/*
* error.c: buttress error handling
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "buttress.h"
/*
* Error flags
*/
#define PREFIX 0x0001 /* give `buttress:' prefix */
static void do_error(int code, va_list ap) {
char error[1024];
char *sp;
int flags;
switch(code) {
case err_nomemory: /* no arguments */
sprintf(error, "out of memory");
flags = PREFIX;
break;
case err_optnoarg:
sp = va_arg(ap, char *);
sprintf(error, "option `-%.200s' requires an argument", sp);
flags = PREFIX;
break;
case err_nosuchopt:
sp = va_arg(ap, char *);
sprintf(error, "unrecognised option `-%.200s'", sp);
flags = PREFIX;
break;
case err_noinput: /* no arguments */
sprintf(error, "no input files");
flags = PREFIX;
break;
}
if (flags & PREFIX)
fputs("buttress: ", stderr);
fputs(error, stderr);
fputc('\n', stderr);
}
void fatal(int code, ...) {
va_list ap;
va_start(ap, code);
do_error(code, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
void error(int code, ...) {
va_list ap;
va_start(ap, code);
do_error(code, ap);
va_end(ap);
}
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