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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 <limits>
#include <vector>
namespace angle
{
// dirtyPointer is a special value that will make the comparison with any valid pointer fail and
// force the renderer to re-apply the state.
const uintptr_t DirtyPointer = std::numeric_limits<uintptr_t>::max();
}
std::string ArrayString(unsigned int i)
{
// We assume that UINT_MAX and GL_INVALID_INDEX are equal.
ASSERT(i != UINT_MAX);
std::stringstream strstr;
strstr << "[";
strstr << i;
strstr << "]";
return strstr.str();
}
std::string ArrayIndexString(const std::vector<unsigned int> &indices)
{
std::stringstream strstr;
for (auto indicesIt = indices.rbegin(); indicesIt != indices.rend(); ++indicesIt)
{
// We assume that UINT_MAX and GL_INVALID_INDEX are equal.
ASSERT(*indicesIt != UINT_MAX);
strstr << "[";
strstr << (*indicesIt);
strstr << "]";
}
return strstr.str();
}
size_t FormatStringIntoVector(const char *fmt, va_list vararg, std::vector<char>& outBuffer)
{
// The state of the va_list passed to vsnprintf is undefined after the call, do a copy in case
// we need to grow the buffer.
va_list varargCopy;
va_copy(varargCopy, vararg);
// Attempt to just print to the current buffer
int len = vsnprintf(&(outBuffer.front()), outBuffer.size(), fmt, varargCopy);
va_end(varargCopy);
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(nullptr, 0, fmt, vararg);
outBuffer.resize(len + 1);
// Print again
va_copy(varargCopy, vararg);
len = vsnprintf(&(outBuffer.front()), outBuffer.size(), fmt, varargCopy);
va_end(varargCopy);
}
ASSERT(len >= 0);
return static_cast<size_t>(len);
}
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