[hackers] [ubase] Add weprintf() || sin

[git]

commit 6df1301594433963840b29d6ae42fb6de4b056c8
Author: sin <s...@2f30.org>
Date:   Wed Mar 12 16:18:29 2014 +0200

    Add weprintf()

diff --git a/util.h b/util.h
index c478579..76feaa9 100644
--- a/util.h
+++ b/util.h
@@ -19,3 +19,4 @@ size_t strlcat(char *, const char *, size_t);
 #undef strlcpy
 size_t strlcpy(char *, const char *, size_t);
 char *ttytostr(int, int);
+void weprintf(const char *, ...);
diff --git a/util/eprintf.c b/util/eprintf.c
index 6d6fa65..bd4e090 100644
--- a/util/eprintf.c
+++ b/util/eprintf.c
@@ -44,3 +44,20 @@ venprintf(int status, const char *fmt, va_list ap)
 
        exit(status);
 }
+
+void
+weprintf(const char *fmt, ...)
+{
+       va_list ap;
+
+       fprintf(stderr, "%s: ", argv0);
+
+       va_start(ap, fmt);
+       vfprintf(stderr, fmt, ap);
+       va_end(ap);
+
+       if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+               fputc(' ', stderr);
+               perror(NULL);
+       }
+}