new trunk (base for 1.5)

windows build only

Foundation/src/TextBufferIterator.cpp

@@ -0,0 +1,200 @@
+//
+// TextBufferIterator.cpp
+//
+// $Id: //poco/1.4/Foundation/src/TextBufferIterator.cpp#1 $
+//
+// Library: Foundation
+// Package: Text
+// Module:  TextBufferIterator
+//
+// Copyright (c) 2010, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#include "Poco/TextBufferIterator.h"
+#include "Poco/TextEncoding.h"
+#include <algorithm>
+#include <cstring>
+
+
+namespace Poco {
+
+
+TextBufferIterator::TextBufferIterator():
+	_pEncoding(0),
+	_it(0),
+	_end(0)
+{
+}
+
+
+TextBufferIterator::TextBufferIterator(const char* begin, const TextEncoding& encoding):
+	_pEncoding(&encoding),
+	_it(begin),
+	_end(begin + std::strlen(begin))
+{
+}
+
+
+TextBufferIterator::TextBufferIterator(const char* begin, std::size_t size, const TextEncoding& encoding):
+	_pEncoding(&encoding),
+	_it(begin),
+	_end(begin + size)
+{
+}
+
+
+TextBufferIterator::TextBufferIterator(const char* begin, const char* end, const TextEncoding& encoding):
+	_pEncoding(&encoding),
+	_it(begin),
+	_end(end)
+{
+}
+
+
+TextBufferIterator::TextBufferIterator(const char* end):
+	_pEncoding(0),
+	_it(end),
+	_end(end)
+{
+}
+
+
+TextBufferIterator::~TextBufferIterator()
+{
+}
+
+
+TextBufferIterator::TextBufferIterator(const TextBufferIterator& it):
+	_pEncoding(it._pEncoding),
+	_it(it._it),
+	_end(it._end)
+{
+}
+
+
+TextBufferIterator& TextBufferIterator::operator = (const TextBufferIterator& it)
+{
+	if (&it != this)
+	{
+		_pEncoding = it._pEncoding;
+		_it        = it._it;
+		_end       = it._end;
+	}
+	return *this;
+}
+
+
+void TextBufferIterator::swap(TextBufferIterator& it)
+{
+	std::swap(_pEncoding, it._pEncoding);
+	std::swap(_it, it._it);
+	std::swap(_end, it._end);
+}
+
+
+int TextBufferIterator::operator * () const
+{
+	poco_check_ptr (_pEncoding);
+	poco_assert (_it != _end);
+	const char* it = _it;
+	
+	unsigned char buffer[TextEncoding::MAX_SEQUENCE_LENGTH];
+	unsigned char* p = buffer;
+
+	if (it != _end)
+		*p++ = *it++;
+	else
+		*p++ = 0;
+
+	int read = 1;
+	int n = _pEncoding->queryConvert(buffer, 1);
+
+	while (-1 > n && (_end - it) >= -n - read)
+	{
+		while (read < -n && it != _end)
+		{ 
+			*p++ = *it++; 
+			read++; 
+		}
+		n = _pEncoding->queryConvert(buffer, read);
+	}
+
+	if (-1 > n)
+	{
+		return -1;
+	}
+	else
+	{
+		return n;
+	}
+}
+
+	
+TextBufferIterator& TextBufferIterator::operator ++ ()
+{
+	poco_check_ptr (_pEncoding);
+	poco_assert (_it != _end);
+	
+	unsigned char buffer[TextEncoding::MAX_SEQUENCE_LENGTH];
+	unsigned char* p = buffer;
+
+	if (_it != _end)
+		*p++ = *_it++;
+	else
+		*p++ = 0;
+
+	int read = 1;
+	int n = _pEncoding->sequenceLength(buffer, 1);
+
+	while (-1 > n && (_end - _it) >= -n - read)
+	{
+		while (read < -n && _it != _end)
+		{ 
+			*p++ = *_it++; 
+			read++; 
+		}
+		n = _pEncoding->sequenceLength(buffer, read);
+	}
+	while (read < n && _it != _end)
+	{ 
+		_it++; 
+		read++; 
+	}
+
+	return *this;
+}
+
+
+TextBufferIterator TextBufferIterator::operator ++ (int)
+{
+	TextBufferIterator prev(*this);
+	operator ++ ();
+	return prev;
+}
+
+
+} // namespace Poco