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-rw-r--r--src/internal/slibtool_snprintf_impl.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/src/internal/slibtool_snprintf_impl.c b/src/internal/slibtool_snprintf_impl.c
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+++ b/src/internal/slibtool_snprintf_impl.c
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+/*******************************************************************/
+/* slibtool: a skinny libtool implementation, written in C */
+/* Copyright (C) 2016--2021 SysDeer Technologies, LLC */
+/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
+/*******************************************************************/
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "slibtool_snprintf_impl.h"
+
+
+/*****************************************************************/
+/* snprintf() wrapper that simplifies usage via the following: */
+/* */
+/* (1) fail (return a negative result) in case the buffer is */
+/* not sufficiently large for the formatted string plus */
+/* the terminating null character. */
+/* */
+/**********************************************************/
+
+
+int slbt_snprintf(char * buf, size_t buflen, const char * fmt, ...)
+{
+ va_list ap;
+ size_t nbytes;
+
+ va_start(ap,fmt);
+ nbytes = vsnprintf(buf,buflen,fmt,ap);
+ va_end(ap);
+
+ if (nbytes >= buflen)
+ return -1;
+
+ return nbytes;
+}