add pool allocated printf function switch_core_sprintf

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4339 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_core.h

@@ -402,6 +402,15 @@ SWITCH_DECLARE(char *) switch_core_strdup(switch_memory_pool_t *pool, const char
 */
 SWITCH_DECLARE(char *) switch_core_session_sprintf(switch_core_session_t *session, const char *fmt, ...);
 
+/*!
+  \brief printf-style style printing routine.  The data is output to a string allocated from the pool
+  \param pool a pool to use for allocation
+  \param fmt The format of the string
+  \param ... The arguments to use while printing the data
+  \return The new string
+*/
+SWITCH_DECLARE(char *) switch_core_sprintf(switch_memory_pool_t *pool, const char *fmt, ...);
+
 /*! 
   \brief Retrieve the memory pool from a session
   \param session the session to retrieve the pool from

src/switch_core.c

@@ -1481,6 +1481,21 @@ SWITCH_DECLARE(char *) switch_core_session_sprintf(switch_core_session_t *sessio
 	return result;
 }
 
+SWITCH_DECLARE(char *) switch_core_sprintf(switch_memory_pool_t *pool, const char *fmt, ...)
+{
+	va_list ap;
+	char *result = NULL;
+
+	assert(pool != NULL);
+	va_start(ap, fmt);
+	
+	result = apr_pvsprintf(pool ,fmt, ap);
+
+	va_end(ap);
+
+	return result;
+}
+
 
 SWITCH_DECLARE(char *) switch_core_session_strdup(switch_core_session_t *session, const char *todup)
 {