1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/compiler/preprocessor/Input.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,54 @@
1.4 +//
1.5 +// Copyright (c) 2011 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +#include "Input.h"
1.11 +
1.12 +#include <algorithm>
1.13 +#include <cassert>
1.14 +#include <cstring>
1.15 +
1.16 +namespace pp
1.17 +{
1.18 +
1.19 +Input::Input() : mCount(0), mString(0)
1.20 +{
1.21 +}
1.22 +
1.23 +Input::Input(size_t count, const char* const string[], const int length[]) :
1.24 + mCount(count),
1.25 + mString(string)
1.26 +{
1.27 + mLength.reserve(mCount);
1.28 + for (size_t i = 0; i < mCount; ++i)
1.29 + {
1.30 + int len = length ? length[i] : -1;
1.31 + mLength.push_back(len < 0 ? std::strlen(mString[i]) : len);
1.32 + }
1.33 +}
1.34 +
1.35 +size_t Input::read(char* buf, size_t maxSize)
1.36 +{
1.37 + size_t nRead = 0;
1.38 + while ((nRead < maxSize) && (mReadLoc.sIndex < mCount))
1.39 + {
1.40 + size_t size = mLength[mReadLoc.sIndex] - mReadLoc.cIndex;
1.41 + size = std::min(size, maxSize);
1.42 + std::memcpy(buf + nRead, mString[mReadLoc.sIndex] + mReadLoc.cIndex, size);
1.43 + nRead += size;
1.44 + mReadLoc.cIndex += size;
1.45 +
1.46 + // Advance string if we reached the end of current string.
1.47 + if (mReadLoc.cIndex == mLength[mReadLoc.sIndex])
1.48 + {
1.49 + ++mReadLoc.sIndex;
1.50 + mReadLoc.cIndex = 0;
1.51 + }
1.52 + }
1.53 + return nRead;
1.54 +}
1.55 +
1.56 +} // namespace pp
1.57 +
