792225317e
1. svn mv OverLua SSATool athenasub avisynth_prs kanamemo \
motiontracker prs traydict unit_test vsfilter devel/
* See r2749 for full description.
Originally committed to SVN as r2755.
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
// Copyright (c) 2005, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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#pragma once
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#include <vector>
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#include "utils.h"
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namespace Athenasub {
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// Fast buffer class
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template <typename T>
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class FastBuffer {
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private:
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std::vector<T> buffer;
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size_t _size;
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public:
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// Constructor
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FastBuffer() { _size = 0; }
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// Gets the stored size
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size_t GetSize() const { return _size; }
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// Shifts all the buffer left, destroying steps entries
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void ShiftLeft(size_t steps) {
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steps = Min(_size,steps);
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memcpy(&buffer[0],&buffer[steps],(_size-steps)*sizeof(T));
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_size -= steps;
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}
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// Get a read pointer
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const T* GetReadPtr() const { return &buffer[0]; }
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// Get a non-const read pointer
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T* GetMutableReadPtr() { return &buffer[0]; }
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// Get a write pointer to a new area of the specified size
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T* GetWritePtr(size_t size) {
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size_t oldSize = _size;
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_size += size;
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if (buffer.size() < _size+4) buffer.resize(_size+4);
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return &buffer[oldSize];
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}
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// Assume that has a certain size, discarding anything beyond it
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void AssumeSize(size_t size) {
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_size = Min(size,_size);
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}
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// Pre-Allocates memory
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void Alloc(size_t size) {
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buffer.resize(size);
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}
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// Finds a line break
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void FindLineBreak(size_t start,size_t end,int &pos,T &character) {
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pos = -1;
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character = 0;
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size_t c1 = '\n';
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size_t c2 = '\r';
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size_t chr;
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for (size_t i=start;i<end;i++) {
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chr = buffer[i];
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if (chr == c1 || chr == c2) {
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pos = (int)i;
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character = (T)chr;
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return;
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}
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}
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}
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};
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}
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