110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The ASF licenses this file to You under the Apache License, Version 2.0
|
|
* (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* $Id: RegxUtil.hpp 678879 2008-07-22 20:05:05Z amassari $
|
|
*/
|
|
|
|
#if !defined(XERCESC_INCLUDE_GUARD_REGXUTIL_HPP)
|
|
#define XERCESC_INCLUDE_GUARD_REGXUTIL_HPP
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// Includes
|
|
// ---------------------------------------------------------------------------
|
|
#include <xercesc/util/XMLUniDefs.hpp>
|
|
|
|
|
|
XERCES_CPP_NAMESPACE_BEGIN
|
|
|
|
class MemoryManager;
|
|
|
|
class XMLUTIL_EXPORT RegxUtil {
|
|
public:
|
|
|
|
// -----------------------------------------------------------------------
|
|
// Constructors and destructors
|
|
// -----------------------------------------------------------------------
|
|
~RegxUtil() {}
|
|
|
|
static XMLInt32 composeFromSurrogate(const XMLCh high, const XMLCh low);
|
|
static bool isEOLChar(const XMLCh);
|
|
static bool isWordChar(const XMLCh);
|
|
static bool isLowSurrogate(const XMLCh ch);
|
|
static bool isHighSurrogate(const XMLCh ch);
|
|
static void decomposeToSurrogates(XMLInt32 ch, XMLCh& high, XMLCh& low);
|
|
|
|
static XMLCh* decomposeToSurrogates(XMLInt32 ch,
|
|
MemoryManager* const manager);
|
|
static XMLCh* stripExtendedComment(const XMLCh* const expression,
|
|
MemoryManager* const manager = 0);
|
|
|
|
private:
|
|
// -----------------------------------------------------------------------
|
|
// Unimplemented constructors and operators
|
|
// -----------------------------------------------------------------------
|
|
RegxUtil();
|
|
};
|
|
|
|
|
|
inline bool RegxUtil::isEOLChar(const XMLCh ch) {
|
|
|
|
return (ch == chLF || ch == chCR || ch == chLineSeparator
|
|
|| ch == chParagraphSeparator);
|
|
}
|
|
|
|
inline XMLInt32 RegxUtil::composeFromSurrogate(const XMLCh high, const XMLCh low) {
|
|
// see http://unicode.org/unicode/faq/utf_bom.html#35
|
|
const XMLInt32 SURROGATE_OFFSET = 0x10000 - (0xD800 << 10) - 0xDC00;
|
|
return (high << 10) + low + SURROGATE_OFFSET;
|
|
}
|
|
|
|
inline bool RegxUtil::isLowSurrogate(const XMLCh ch) {
|
|
|
|
return (ch & 0xFC00) == 0xDC00;
|
|
}
|
|
|
|
inline bool RegxUtil::isHighSurrogate(const XMLCh ch) {
|
|
|
|
return (ch & 0xFC00) == 0xD800;
|
|
}
|
|
|
|
inline void RegxUtil::decomposeToSurrogates(XMLInt32 ch, XMLCh& high, XMLCh& low) {
|
|
// see http://unicode.org/unicode/faq/utf_bom.html#35
|
|
const XMLInt32 LEAD_OFFSET = 0xD800 - (0x10000 >> 10);
|
|
high = XMLCh(LEAD_OFFSET + (ch >> 10));
|
|
low = XMLCh(0xDC00 + (ch & 0x3FF));
|
|
}
|
|
|
|
inline bool RegxUtil::isWordChar(const XMLCh ch) {
|
|
|
|
if ((ch == chUnderscore)
|
|
|| (ch >= chDigit_0 && ch <= chDigit_9)
|
|
|| (ch >= chLatin_A && ch <= chLatin_Z)
|
|
|| (ch >= chLatin_a && ch <= chLatin_z))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
XERCES_CPP_NAMESPACE_END
|
|
|
|
#endif
|
|
|
|
/**
|
|
* End of file RegxUtil.hpp
|
|
*/
|