From 6d61220e72fd4add3b509dd4d65d59a83158e388 Mon Sep 17 00:00:00 2001 From: kpfleming Date: Wed, 6 Apr 2005 03:43:59 +0000 Subject: use more efficient code to produce non-codec-capability list (bug #3960) git-svn-id: http://svn.digium.com/svn/asterisk/trunk@5421 f38db490-d61c-443f-a65b-d21fe96a405b --- rtp.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) (limited to 'rtp.c') diff --git a/rtp.c b/rtp.c index d4989db00..41f37b33f 100755 --- a/rtp.c +++ b/rtp.c @@ -853,21 +853,35 @@ char* ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code) { char *ast_rtp_lookup_mime_multiple(char *buf, int size, const int capability, const int isAstFormat) { int format; + unsigned len; + char *end = buf; + char *start = buf; if (!buf || !size) return NULL; - snprintf(buf, size, "0x%x (", capability); + snprintf(end, size, "0x%x (", capability); + + len = strlen(end); + end += len; + size -= len; + start = end; for (format = 1; format < AST_RTP_MAX; format <<= 1) { if (capability & format) { const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format); - snprintf(buf + strlen(buf), size - strlen(buf), "%s|", name); + snprintf(end, size, "%s|", name); + len = strlen(end); + end += len; + size -= len; } } - if (!ast_strlen_zero(buf)) - buf[strlen(buf)] = ')'; + if (start == end) + snprintf(start, size, "nothing)"); + else if (size > 1) + *(end -1) = ')'; + return buf; } -- cgit v1.2.3