[Asterisk-cvs] asterisk utils.c,1.43,1.44

[kpfleming at lists.digium.com]

Update of /usr/cvsroot/asterisk
In directory mongoose.digium.com:/tmp/cvs-serv18787

Modified Files:
	utils.c 
Log Message:
add ast_build_string library function (from bug #3644)


Index: utils.c
===================================================================
RCS file: /usr/cvsroot/asterisk/utils.c,v
retrieving revision 1.43
retrieving revision 1.44
diff -u -d -r1.43 -r1.44
--- utils.c	9 May 2005 13:50:38 -0000	1.43
+++ utils.c	15 May 2005 22:33:01 -0000	1.44
@@ -17,6 +17,7 @@
 #include <unistd.h>
 #include <stdlib.h>
 #include <errno.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -433,6 +434,28 @@
 	*dst = '\0';
 }
 
+int ast_build_string(char **buffer, size_t *space, const char *fmt, ...)
+{
+	va_list ap;
+	int result;
+
+	if (!buffer || !*buffer || !space || !*space)
+		return -1;
+
+	va_start(ap, fmt);
+	result = vsnprintf(*buffer, *space, fmt, ap);
+	va_end(ap);
+
+	if (result < 0)
+		return -1;
+	else if (result > *space)
+		result = *space;
+
+	*buffer += result;
+	*space -= result;
+	return 0;
+}
+
 /* Case-insensitive substring matching */
 #ifndef LINUX
 static char *upper(const char *orig, char *buf, int bufsize)