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//
// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#include "common/angleutils.h"
#include "common/debug.h"
#include <stdio.h>
#include <vector>
size_t FormatStringIntoVector(const char *fmt, va_list vararg, std::vector<char>& outBuffer)
{
// Attempt to just print to the current buffer
int len = vsnprintf(&(outBuffer.front()), outBuffer.size(), fmt, vararg);
if (len < 0 || static_cast<size_t>(len) >= outBuffer.size())
{
// Buffer was not large enough, calculate the required size and resize the buffer
len = vsnprintf(NULL, 0, fmt, vararg);
outBuffer.resize(len + 1);
// Print again
len = vsnprintf(&(outBuffer.front()), outBuffer.size(), fmt, vararg);
}
ASSERT(len >= 0);
return static_cast<size_t>(len);
}
std::string FormatString(const char *fmt, va_list vararg)
{
static std::vector<char> buffer(512);
size_t len = FormatStringIntoVector(fmt, vararg, buffer);
return std::string(&buffer[0], len);
}
std::string FormatString(const char *fmt, ...)
{
va_list vararg;
va_start(vararg, fmt);
std::string result = FormatString(fmt, vararg);
va_end(vararg);
return result;
}
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