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	eprintf.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
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	---
	eprintf.c (1018B)
	---
	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 static void venprintf(int, const char *, va_list);
	12
	13 void
	14 eprintf(const char *fmt, ...)
	15 {
	16 va_list ap;
	17
	18 va_start(ap, fmt);
	19 venprintf(1, fmt, ap);
	20 va_end(ap);
	21 }
	22
	23 void
	24 enprintf(int status, const char *fmt, ...)
	25 {
	26 va_list ap;
	27
	28 va_start(ap, fmt);
	29 venprintf(status, fmt, ap);
	30 va_end(ap);
	31 }
	32
	33 void
	34 venprintf(int status, const char *fmt, va_list ap)
	35 {
	36 if (strncmp(fmt, "usage", strlen("usage")))
	37 fprintf(stderr, "%s: ", argv0);
	38
	39 vfprintf(stderr, fmt, ap);
	40
	41 if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
	42 fputc(' ', stderr);
	43 perror(NULL);
	44 }
	45
	46 exit(status);
	47 }
	48
	49 void
	50 weprintf(const char *fmt, ...)
	51 {
	52 va_list ap;
	53
	54 if (strncmp(fmt, "usage", strlen("usage")))
	55 fprintf(stderr, "%s: ", argv0);
	56
	57 va_start(ap, fmt);
	58 vfprintf(stderr, fmt, ap);
	59 va_end(ap);
	60
	61 if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
	62 fputc(' ', stderr);
	63 perror(NULL);
	64 }
	65 }