Diff: easy-connect/esp8266-driver/ESP8266/ATParser/BufferedSerial/BufferedPrint.c

Revision:

0:a1734fe1ec4b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/easy-connect/esp8266-driver/ESP8266/ATParser/BufferedSerial/BufferedPrint.c	Sat Apr 08 14:43:14 2017 +0000
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2014-2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "mbed_error.h"
+
+size_t BufferedSerialThunk(void *buf_serial, const void *s, size_t length);
+
+int BufferedPrintfC(void *stream, int size, const char* format, va_list arg)
+{
+    int r;
+    char buffer[512];
+    if (size >= 512) {
+        return -1;
+    }
+    memset(buffer, 0, size);
+    r = vsprintf(buffer, format, arg);
+    // this may not hit the heap but should alert the user anyways
+    if(r > (int32_t) size) {
+        error("%s %d buffer overwrite (max_buf_size: %d exceeded: %d)!\r\n", __FILE__, __LINE__, size, r);
+        return 0;
+    }
+    if ( r > 0 ) {
+        BufferedSerialThunk(stream, buffer, r);
+    }
+    return r;
+}