[2674] | 1 | /* |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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| 3 | * contributor license agreements. See the NOTICE file distributed with |
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| 4 | * this work for additional information regarding copyright ownership. |
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 6 | * (the "License"); you may not use this file except in compliance with |
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| 7 | * the License. You may obtain a copy of the License at |
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| 8 | * |
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 10 | * |
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| 11 | * Unless required by applicable law or agreed to in writing, software |
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 14 | * See the License for the specific language governing permissions and |
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| 15 | * limitations under the License. |
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| 16 | */ |
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| 17 | |
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| 18 | /* |
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| 19 | * $Id: RegxUtil.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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| 20 | */ |
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| 21 | |
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| 22 | #if !defined(REGXUTIL_HPP) |
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| 23 | #define REGXUTIL_HPP |
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| 24 | |
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| 25 | // --------------------------------------------------------------------------- |
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| 26 | // Includes |
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| 27 | // --------------------------------------------------------------------------- |
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| 28 | #include <xercesc/util/XMLUniDefs.hpp> |
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| 29 | |
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| 30 | |
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| 31 | XERCES_CPP_NAMESPACE_BEGIN |
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| 32 | |
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| 33 | class MemoryManager; |
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| 34 | |
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| 35 | class XMLUTIL_EXPORT RegxUtil { |
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| 36 | public: |
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| 37 | |
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| 38 | // ----------------------------------------------------------------------- |
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| 39 | // Constructors and destructors |
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| 40 | // ----------------------------------------------------------------------- |
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| 41 | ~RegxUtil() {} |
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| 42 | |
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| 43 | static XMLInt32 composeFromSurrogate(const XMLCh high, const XMLCh low); |
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| 44 | static bool isEOLChar(const XMLCh); |
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| 45 | static bool isWordChar(const XMLCh); |
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| 46 | static bool isLowSurrogate(const XMLCh ch); |
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| 47 | static bool isHighSurrogate(const XMLCh ch); |
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| 48 | static void decomposeToSurrogates(XMLInt32 ch, XMLCh& high, XMLCh& low); |
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| 49 | |
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| 50 | static XMLCh* decomposeToSurrogates(XMLInt32 ch, |
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| 51 | MemoryManager* const manager); |
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| 52 | static XMLCh* stripExtendedComment(const XMLCh* const expression, |
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| 53 | MemoryManager* const manager = 0); |
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| 54 | |
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| 55 | private: |
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| 56 | // ----------------------------------------------------------------------- |
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| 57 | // Unimplemented constructors and operators |
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| 58 | // ----------------------------------------------------------------------- |
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| 59 | RegxUtil(); |
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| 60 | }; |
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| 61 | |
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| 62 | |
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| 63 | inline bool RegxUtil::isEOLChar(const XMLCh ch) { |
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| 64 | |
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| 65 | return (ch == chLF || ch == chCR || ch == chLineSeparator |
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| 66 | || ch == chParagraphSeparator); |
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| 67 | } |
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| 68 | |
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| 69 | inline XMLInt32 RegxUtil::composeFromSurrogate(const XMLCh high, const XMLCh low) { |
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| 70 | |
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| 71 | return 0x10000 + ((high - 0xD800) << 10) + (low - 0xDC00); |
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| 72 | } |
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| 73 | |
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| 74 | inline bool RegxUtil::isLowSurrogate(const XMLCh ch) { |
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| 75 | |
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| 76 | return (ch & 0xFC00) == 0xDC00; |
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| 77 | } |
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| 78 | |
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| 79 | inline bool RegxUtil::isHighSurrogate(const XMLCh ch) { |
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| 80 | |
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| 81 | return (ch & 0xFC00) == 0xD800; |
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| 82 | } |
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| 83 | |
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| 84 | inline void RegxUtil::decomposeToSurrogates(XMLInt32 ch, XMLCh& high, XMLCh& low) { |
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| 85 | |
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| 86 | ch -= 0x10000; |
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| 87 | high = XMLCh((ch >> 10) + 0xD800); |
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| 88 | low = XMLCh((ch & 0x03FF) + 0xDC00); |
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| 89 | } |
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| 90 | |
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| 91 | inline bool RegxUtil::isWordChar(const XMLCh ch) { |
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| 92 | |
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| 93 | if ((ch == chUnderscore) |
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| 94 | || (ch >= chDigit_0 && ch <= chDigit_9) |
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| 95 | || (ch >= chLatin_A && ch <= chLatin_Z) |
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| 96 | || (ch >= chLatin_a && ch <= chLatin_z)) |
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| 97 | return true; |
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| 98 | |
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| 99 | return false; |
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| 100 | } |
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| 101 | |
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| 102 | XERCES_CPP_NAMESPACE_END |
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| 103 | |
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| 104 | #endif |
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| 105 | |
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| 106 | /** |
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| 107 | * End of file RegxUtil.hpp |
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| 108 | */ |
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