michael@0: //
michael@0: // Copyright (c) 2011 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: #include "Input.h"
michael@0: 
michael@0: #include <algorithm>
michael@0: #include <cassert>
michael@0: #include <cstring>
michael@0: 
michael@0: namespace pp
michael@0: {
michael@0: 
michael@0: Input::Input() : mCount(0), mString(0)
michael@0: {
michael@0: }
michael@0: 
michael@0: Input::Input(size_t count, const char* const string[], const int length[]) :
michael@0:     mCount(count),
michael@0:     mString(string)
michael@0: {
michael@0:     mLength.reserve(mCount);
michael@0:     for (size_t i = 0; i < mCount; ++i)
michael@0:     {
michael@0:         int len = length ? length[i] : -1;
michael@0:         mLength.push_back(len < 0 ? std::strlen(mString[i]) : len);
michael@0:     }
michael@0: }
michael@0: 
michael@0: size_t Input::read(char* buf, size_t maxSize)
michael@0: {
michael@0:     size_t nRead = 0;
michael@0:     while ((nRead < maxSize) && (mReadLoc.sIndex < mCount))
michael@0:     {
michael@0:         size_t size = mLength[mReadLoc.sIndex] - mReadLoc.cIndex;
michael@0:         size = std::min(size, maxSize);
michael@0:         std::memcpy(buf + nRead, mString[mReadLoc.sIndex] + mReadLoc.cIndex, size);
michael@0:         nRead += size;
michael@0:         mReadLoc.cIndex += size;
michael@0: 
michael@0:         // Advance string if we reached the end of current string.
michael@0:         if (mReadLoc.cIndex == mLength[mReadLoc.sIndex])
michael@0:         {
michael@0:             ++mReadLoc.sIndex;
michael@0:             mReadLoc.cIndex = 0;
michael@0:         }
michael@0:     }
michael@0:     return nRead;
michael@0: }
michael@0: 
michael@0: }  // namespace pp
michael@0: