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mfgtool/io_lib/src/iot_sprintf.c

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+/****************************************************************************
+
+Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
+
+This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
+be copied by any method or incorporated into another program without
+the express written consent of Aerospace C.Power. This Information or any portion
+thereof remains the property of Aerospace C.Power. The Information contained herein
+is believed to be accurate and Aerospace C.Power assumes no responsibility or
+liability for its use in any way and conveys no license or title under
+any patent or copyright and makes no representation or warranty that this
+Information is free from patent or copyright infringement.
+
+****************************************************************************/
+/* os shim includes */
+#include <stdio.h>
+#include <string.h>
+
+#include "strformat.h"
+
+static StrFormatResult 
+buffer_str(void *user_data, const char *data, unsigned int len)
+{
+    memcpy(*(char**)user_data, data, len);
+    (*(char**)user_data) += len;
+
+    return STRFORMAT_OK;
+}
+
+int iot_sprintf(char *str, const char *format, ...)
+{
+    str_format_context ctxt;
+    int res;
+    va_list ap;
+    va_start(ap, format);
+    ctxt.write_str = buffer_str;
+    ctxt.user_data = &str;
+    res = format_str_v(&ctxt, format, ap);
+    *str = '\0';
+    va_end(ap);
+    return res;
+}