// Copyright 2025 The Android Open Source Project
//
// 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 <io.h>

#include <stdio.h>
#include <stdlib.h>


// From https://msdn.microsoft.com/en-us/library/28d5ce15.aspx
int vasprintf(char** buf, const char* format, va_list args) {
    int len;

    if (buf == NULL) {
        return -1;
    }

    len = _vscprintf(format, args)  // _vscprintf doesn't count
          + 1;                      // terminating '\0'

    if (len <= 0) {
        return len;
    }

    *buf = (char*)malloc(len * sizeof(char));

    vsprintf(*buf, format, args);  // C4996
    // Note: vsprintf is deprecated; consider using vsprintf_s instead
    return len;
}