GME  13
RegxUtil.cpp
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00001 /*
00002  * Licensed to the Apache Software Foundation (ASF) under one or more
00003  * contributor license agreements.  See the NOTICE file distributed with
00004  * this work for additional information regarding copyright ownership.
00005  * The ASF licenses this file to You under the Apache License, Version 2.0
00006  * (the "License"); you may not use this file except in compliance with
00007  * the License.  You may obtain a copy of the License at
00008  * 
00009  *      http://www.apache.org/licenses/LICENSE-2.0
00010  * 
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS,
00013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 
00018 /*
00019  * $Id: RegxUtil.cpp 678879 2008-07-22 20:05:05Z amassari $
00020  */
00021 
00022 // ---------------------------------------------------------------------------
00023 //  Includes
00024 // ---------------------------------------------------------------------------
00025 #include <xercesc/util/regx/RegxUtil.hpp>
00026 #include <xercesc/util/XMLString.hpp>
00027 
00028 XERCES_CPP_NAMESPACE_BEGIN
00029 
00030 XMLCh* RegxUtil::decomposeToSurrogates(XMLInt32 ch,
00031                                        MemoryManager* const manager) {
00032 
00033     XMLCh* pszStr = (XMLCh*) manager->allocate(3 *  sizeof(XMLCh));//new XMLCh[3];
00034 
00035     decomposeToSurrogates(ch, pszStr[0], pszStr[1]);
00036 
00037     pszStr[2] = chNull;
00038 
00039     return pszStr;
00040 }
00041 
00042 
00043 XMLCh* RegxUtil::stripExtendedComment(const XMLCh* const expression,
00044                                       MemoryManager* const manager) {
00045 
00046     XMLCh* buffer = (manager) ? XMLString::replicate(expression, manager)
00047                               : XMLString::replicate(expression);
00048 
00049     if (buffer)
00050     {
00051         const XMLCh* inPtr = expression;
00052         XMLCh* outPtr = buffer;
00053 
00054         while (*inPtr) {
00055 
00056             XMLCh ch = *inPtr++;
00057 
00058             if (ch == chFF || ch == chCR || ch == chLF
00059                 || ch == chSpace || ch == chHTab) {
00060                 continue;
00061             }
00062 
00063             // Skips chracters between '#' and a line end.
00064             if (ch == chPound) {
00065 
00066                 while (*inPtr) {
00067 
00068                     ch = *inPtr++;
00069                     if (ch == chLF || ch == chCR)
00070                         break;
00071                 }
00072 
00073                 continue;
00074             }
00075 
00076             if (ch == chBackSlash && *inPtr) {
00077 
00078                 if ((ch = *inPtr++) == chPound || ch == chHTab || ch == chLF
00079                     || ch == chFF || ch == chCR || ch == chSpace) {
00080                     *outPtr++ = ch;
00081                 }
00082                 else { // Other escaped character.
00083 
00084                     *outPtr++ = chBackSlash;
00085                     *outPtr++ = ch;
00086                 }
00087             }
00088             else { // As is.
00089                 *outPtr++ = ch;
00090             }
00091         }
00092 
00093         *outPtr = chNull; // null terminate
00094     }
00095 
00096     return buffer;
00097 }
00098 
00099 XERCES_CPP_NAMESPACE_END
00100