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#include "util.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#define FORMAT_MAX_SIZE 1024
extern int errno;
void NORETURN die(char const * format, ...) {
va_list vargs;
va_start (vargs, format);
vfprintf(stderr, format, vargs);
fprintf(stderr, "\n");
va_end(vargs);
exit(1);
}
void err(char const * format, ...) {
va_list vargs;
va_start (vargs, format);
vfprintf(stderr, format, vargs);
fprintf(stderr, "\n");
va_end(vargs);
}
void format_with_errno(char * buf, size_t n, char const * format) {
char const * errstr = strerror(errno);
char fmt_err[256];
size_t i = 0,
j = 0;
while(errstr[j] && i < sizeof(fmt_err) - 1) {
if((fmt_err[i++] = errstr[j++]) != '%')
continue;
if(i < sizeof(fmt_err) - 1) {
fmt_err[i++] = '%';
} else {
i--;
}
}
fmt_err[i] = '\0';
snprintf(buf, n, "%s: %s", format, fmt_err);
}
void NORETURN die_errno(char const * format, ...) {
va_list vargs;
va_start (vargs, format);
char buf[FORMAT_MAX_SIZE];
format_with_errno(buf, sizeof(buf), format);
vfprintf(stderr, buf, vargs);
fprintf(stderr, "\n");
exit(1);
va_end(vargs);
}
void err_errno(char const * format, ...) {
va_list vargs;
va_start (vargs, format);
char buf[FORMAT_MAX_SIZE];
format_with_errno(buf, sizeof(buf), format);
vfprintf(stderr, buf, vargs);
fprintf(stderr, "\n");
va_end(vargs);
}
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