1 files changed, 145 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.0.12/src/InputBuffer.h b/Build/source/texk/dvisvgm/dvisvgm-1.0.12/src/InputBuffer.h
new file mode 100644
index 00000000000..c06a4388724
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-1.0.12/src/InputBuffer.h
@@ -0,0 +1,145 @@
+/*************************************************************************
+** InputBuffer.h                                                        **
+**                                                                      **
+** This file is part of dvisvgm -- the DVI to SVG converter             **
+** Copyright (C) 2005-2012 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/>. **
+*************************************************************************/
+
+#ifndef INPUTBUFFER_H
+#define INPUTBUFFER_H
+
+#include <algorithm>
+#include <cstring>
+#include <istream>
+#include <string>
+#include <ostream>
+#include "types.h"
+
+struct InputBuffer
+{
+	virtual ~InputBuffer () {}
+	virtual int get () =0;
+	virtual int peek () const =0;
+	virtual int peek (unsigned n) const =0;
+	virtual bool eof () const =0;
+   virtual void invalidate () =0;
+};
+
+
+class StreamInputBuffer : public InputBuffer
+{
+	public:
+		StreamInputBuffer (std::istream &is, unsigned bufsize=1024);
+		~StreamInputBuffer ();
+		int get ();
+		int peek () const;
+		int peek (unsigned n) const;
+		bool eof () const  {return pos() == _size1 && _size2 == 0;}
+      void invalidate () {_bufptr = _buf1+_size1; _size2 = 0;}
+
+	protected:
+		int fillBuffer (UInt8 *buf);
+		unsigned pos () const  {return _bufptr-_buf1;}
+
+	private:
+		std::istream &_is;
+		const unsigned _bufsize;  ///< maximal number of bytes each buffer can hold
+		UInt8 *_buf1;        ///< pointer to first buffer
+		UInt8 *_buf2;        ///< pointer to second buffer
+		unsigned _size1;     ///< number of bytes in buffer 1
+		unsigned _size2;     ///< number of bytes in buffer 2
+		UInt8 *_bufptr;      ///< pointer to next byte to read
+};
+
+
+class StringInputBuffer : public InputBuffer
+{
+	public:
+		StringInputBuffer (const std::string &str) : _str(str), _pos(0) {}
+		int get ()                  {return _pos < _str.length() ? _str[_pos++] : -1;}
+		int peek () const           {return _pos < _str.length() ? _str[_pos] : -1;}
+		int peek (unsigned n) const {return _pos+n < _str.length() ? _str[_pos+n] : -1;}
+		bool eof () const           {return _pos >= _str.length();}
+      void invalidate ()          {_pos = _str.length();}
+
+	private:
+		const std::string &_str;
+		unsigned _pos;
+};
+
+
+class CharInputBuffer : public InputBuffer
+{
+	public:
+		CharInputBuffer (const char *buf, unsigned size) : _pos(buf), _size(buf ? size : 0) {}
+
+		int get () {
+			if (_size <= 0)
+				return -1;
+			else {
+				_size--;
+				return *_pos++;
+			}
+		}
+
+
+		void assign (const char *buf, unsigned size) {
+			_pos = buf;
+			_size = size;
+		}
+
+		void assign (const char *buf) {assign(buf, std::strlen(buf));}
+		int peek () const             {return _size > 0 ? *_pos : -1;}
+		int peek (unsigned n) const   {return _size >= n ? _pos[n] : -1;}
+		bool eof () const             {return _size <= 0;}
+      void invalidate ()            {_size = 0;}
+
+	private:
+		const char *_pos;
+		unsigned _size;
+};
+
+
+class SplittedCharInputBuffer : public InputBuffer
+{
+	public:
+		SplittedCharInputBuffer (const char *buf1, unsigned s1, const char *buf2, unsigned s2);
+		int get ();
+		int peek () const;
+		int peek (unsigned n) const;
+		bool eof () const   {return _size[_index] == 0;}
+      void invalidate ()  {_size[_index] = 0;}
+
+	private:
+		const char *_buf[2];
+		unsigned _size[2];
+		int _index;
+};
+
+
+class TextStreamInputBuffer : public StreamInputBuffer
+{
+	public:
+		TextStreamInputBuffer (std::istream &is) : StreamInputBuffer(is), _line(1), _col(1) {}
+		int get ();
+		int line () const {return _line;}
+		int col () const {return _col;}
+
+	private:
+		int _line, _col;
+};
+
+#endif