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	eprintf.c - sbase - suckless unix tools
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	---
	eprintf.c (786B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <stdarg.h>
	3 #include <stdio.h>
	4 #include <stdlib.h>
	5 #include <string.h>
	6
	7 #include "../util.h"
	8
	9 char *argv0;
	10
	11 void
	12 eprintf(const char *fmt, ...)
	13 {
	14 va_list ap;
	15
	16 va_start(ap, fmt);
	17 xvprintf(fmt, ap);
	18 va_end(ap);
	19
	20 exit(1);
	21 }
	22
	23 void
	24 enprintf(int status, const char *fmt, ...)
	25 {
	26 va_list ap;
	27
	28 va_start(ap, fmt);
	29 xvprintf(fmt, ap);
	30 va_end(ap);
	31
	32 exit(status);
	33 }
	34
	35 void
	36 weprintf(const char *fmt, ...)
	37 {
	38 va_list ap;
	39
	40 va_start(ap, fmt);
	41 xvprintf(fmt, ap);
	42 va_end(ap);
	43 }
	44
	45 void
	46 xvprintf(const char *fmt, va_list ap)
	47 {
	48 if (argv0 && strncmp(fmt, "usage", strlen("usage")))
	49 fprintf(stderr, "%s: ", argv0);
	50
	51 vfprintf(stderr, fmt, ap);
	52
	53 if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
	54 fputc(' ', stderr);
	55 perror(NULL);
	56 }
	57 }