diff options
Diffstat (limited to 'src/3rdparty/angle/src/compiler/preprocessor/Input.cpp')
-rw-r--r-- | src/3rdparty/angle/src/compiler/preprocessor/Input.cpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/preprocessor/Input.cpp b/src/3rdparty/angle/src/compiler/preprocessor/Input.cpp new file mode 100644 index 0000000000..b4d970a97d --- /dev/null +++ b/src/3rdparty/angle/src/compiler/preprocessor/Input.cpp @@ -0,0 +1,54 @@ +// +// 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 + |