1 files changed, 138 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.9/src/InputBuffer.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.9/src/InputBuffer.cpp
new file mode 100644
index 00000000000..154c60511bd
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-1.9/src/InputBuffer.cpp
@@ -0,0 +1,138 @@
+/*************************************************************************
+** InputBuffer.cpp                                                      **
+**                                                                      **
+** This file is part of dvisvgm -- the DVI to SVG converter             **
+** Copyright (C) 2005-2014 Martin Gieseking <martin.gieseking@uos.de>   **
+**                                                                      **
+** This program is free software; you can redistribute it and/or        **
+** modify it under the terms of the GNU General Public License as       **
+** published by the Free Software Foundation; either version 3 of       **
+** the License, or (at your option) any later version.                  **
+**                                                                      **
+** This program is distributed in the hope that it will be useful, but  **
+** WITHOUT ANY WARRANTY; without even the implied warranty of           **
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         **
+** GNU General Public License for more details.                         **
+**                                                                      **
+** You should have received a copy of the GNU General Public License    **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#include <config.h>
+#include <cmath>
+#include <cstring>
+#include "InputBuffer.h"
+
+using namespace std;
+
+
+StreamInputBuffer::StreamInputBuffer (istream &is, size_t bufsize)
+	: _is(is), _bufsize(bufsize), _buf1(new UInt8[_bufsize]), _buf2(new UInt8[_bufsize]), _bufptr(_buf1)
+{
+	_size1 = fillBuffer(_buf1);
+	_size2 = fillBuffer(_buf2);
+}
+
+
+StreamInputBuffer::~StreamInputBuffer () {
+	delete [] _buf1;
+	delete [] _buf2;
+}
+
+
+int StreamInputBuffer::get () {
+	if (pos() == _size1) {
+		if (_size2 == 0)
+			return -1;
+		swap(_buf1, _buf2);
+		_size1 = _size2;
+		_bufptr = _buf1;
+		_size2 = fillBuffer(_buf2);
+	}
+	UInt8 c = *_bufptr++;
+	return c;
+}
+
+
+/** Returns the next character to be read without skipping it.
+ *  Same as peek(0). */
+int StreamInputBuffer::peek () const {
+	if (pos() < _size1)
+		return *_bufptr;
+	return _size2 > 0 ? *_buf2 : -1;
+}
+
+
+/** Returns the n-th next character without skipping it. */
+int StreamInputBuffer::peek (size_t n) const {
+	if (pos()+n < _size1)
+		return *(_bufptr+n);
+	if (pos()+n < _size1+_size2)
+		return *(_buf2 + pos()+n-_size1);
+	return -1;
+}
+
+
+/** Fills the buffer by reading a sequence of characters from the assigned
+ *  input stream.
+ *  @param[in] buf pointer to character buffer to be filled
+ *  @return number of characters read */
+int StreamInputBuffer::fillBuffer (UInt8 *buf) {
+	if (_is && !_is.eof()) {
+		_is.read((char*)buf, _bufsize);
+		return  _is.gcount();
+	}
+	return 0;
+}
+
+///////////////////////////////////////////////
+
+SplittedCharInputBuffer::SplittedCharInputBuffer (const char *buf1, size_t s1, const char *buf2, size_t s2) {
+	_buf[0] = buf1;
+	_buf[1] = buf2;
+	_size[0] = buf1 ? s1 : 0;
+	_size[1] = buf2 ? s2 : 0;
+	_index = _size[0] ? 0 : 1;
+}
+
+
+int SplittedCharInputBuffer::get () {
+	if (_size[_index] == 0)
+		return -1;
+	int ret = *_buf[_index]++;
+	_size[_index]--;
+	if (_index == 0 && _size[0] == 0)
+		_index++;
+	return ret;
+}
+
+
+int SplittedCharInputBuffer::peek () const {
+	return _size[_index] ? *_buf[_index] : -1;
+}
+
+
+int SplittedCharInputBuffer::peek (size_t n) const {
+	if (n < _size[_index])
+		return _buf[_index][n];
+	n -= _size[_index];
+	if (_index == 0 && n < _size[1])
+		return _buf[1][n];
+	return -1;
+}
+
+///////////////////////////////////////////////
+
+
+int TextStreamInputBuffer::get () {
+	int c = StreamInputBuffer::get();
+	if (c == '\n') {
+		_line++;
+		_col = 1;
+	}
+	else
+		_col++;
+	return c;
+}
+
+