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//
// Copyright (c) 2011 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 "Input.h"
#include <algorithm>
#include <cassert>
#include <cstring>
namespace pp
{
Input::Input() : mCount(0), mString(0)
{
}
Input::Input(size_t count, const char* const string[], const int length[]) :
mCount(count),
mString(string)
{
mLength.reserve(mCount);
for (size_t i = 0; i < mCount; ++i)
{
int len = length ? length[i] : -1;
mLength.push_back(len < 0 ? std::strlen(mString[i]) : len);
}
}
size_t Input::read(char* buf, size_t maxSize)
{
size_t nRead = 0;
while ((nRead < maxSize) && (mReadLoc.sIndex < mCount))
{
size_t size = mLength[mReadLoc.sIndex] - mReadLoc.cIndex;
size = std::min(size, maxSize);
std::memcpy(buf + nRead, mString[mReadLoc.sIndex] + mReadLoc.cIndex, size);
nRead += size;
mReadLoc.cIndex += size;
// Advance string if we reached the end of current string.
if (mReadLoc.cIndex == mLength[mReadLoc.sIndex])
{
++mReadLoc.sIndex;
mReadLoc.cIndex = 0;
}
}
return nRead;
}
} // namespace pp
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