[358] | 1 | /*
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| 2 | * Copyright 1999-2000,2004 The Apache Software Foundation.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 |
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| 17 | /*
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| 18 | * $Id: RedirectHandlers.cpp,v 1.10 2004/09/08 13:55:33 peiyongz Exp $
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| 19 | */
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| 20 |
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| 21 |
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| 22 |
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| 23 | // ---------------------------------------------------------------------------
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| 24 | // Includes
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| 25 | // ---------------------------------------------------------------------------
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| 26 | #include <xercesc/util/XMLUniDefs.hpp>
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| 27 | #include <xercesc/util/XMLUni.hpp>
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| 28 | #include <xercesc/sax/AttributeList.hpp>
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| 29 | #include <xercesc/sax/SAXParseException.hpp>
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| 30 | #include <xercesc/sax/SAXException.hpp>
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| 31 | #include <xercesc/framework/LocalFileInputSource.hpp>
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| 32 | #include "Redirect.hpp"
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| 33 | #include <string.h>
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| 34 |
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| 35 |
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| 36 | // ---------------------------------------------------------------------------
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| 37 | // Local constant data
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| 38 | //
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| 39 | // gFileToTrap
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| 40 | // This is the file that we are looking for in the entity handler, to
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| 41 | // redirect to another file.
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| 42 | //
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| 43 | // gRedirectToFile
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| 44 | // This is the file that we are going to redirect the parser to.
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| 45 | // ---------------------------------------------------------------------------
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| 46 | static const XMLCh gFileToTrap[] =
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| 47 | {
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| 48 | chLatin_p, chLatin_e, chLatin_r, chLatin_s, chLatin_o, chLatin_n
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| 49 | , chLatin_a, chLatin_l, chPeriod, chLatin_d, chLatin_t, chLatin_d, chNull
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| 50 | };
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| 51 |
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| 52 | static const XMLCh gRedirectToFile[] =
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| 53 | {
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| 54 | chLatin_r, chLatin_e, chLatin_d, chLatin_i, chLatin_r, chLatin_e
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| 55 | , chLatin_c, chLatin_t, chPeriod, chLatin_d, chLatin_t, chLatin_d, chNull
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| 56 | };
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| 57 |
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| 58 |
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| 59 | // ---------------------------------------------------------------------------
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| 60 | // RedirectHandlers: Constructors and Destructor
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| 61 | // ---------------------------------------------------------------------------
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| 62 | RedirectHandlers::RedirectHandlers() :
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| 63 |
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| 64 | fElementCount(0)
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| 65 | , fAttrCount(0)
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| 66 | , fCharacterCount(0)
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| 67 | , fSpaceCount(0)
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| 68 | {
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| 69 | }
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| 70 |
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| 71 | RedirectHandlers::~RedirectHandlers()
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| 72 | {
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| 73 | }
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| 74 |
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| 75 |
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| 76 | // ---------------------------------------------------------------------------
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| 77 | // RedirectHandlers: Implementation of the SAX DocumentHandler interface
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| 78 | // ---------------------------------------------------------------------------
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| 79 | void RedirectHandlers::startElement(const XMLCh* const name
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| 80 | , AttributeList& attributes)
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| 81 | {
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| 82 | fElementCount++;
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| 83 | fAttrCount += attributes.getLength();
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| 84 | }
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| 85 |
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| 86 | void RedirectHandlers::characters( const XMLCh* const chars
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| 87 | , const unsigned int length)
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| 88 | {
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| 89 | fCharacterCount += length;
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| 90 | }
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| 91 |
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| 92 | void RedirectHandlers::ignorableWhitespace( const XMLCh* const chars
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| 93 | , const unsigned int length)
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| 94 | {
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| 95 | fSpaceCount += length;
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| 96 | }
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| 97 |
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| 98 | void RedirectHandlers::resetDocument()
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| 99 | {
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| 100 | fAttrCount = 0;
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| 101 | fCharacterCount = 0;
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| 102 | fElementCount = 0;
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| 103 | fSpaceCount = 0;
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| 104 | }
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| 105 |
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| 106 |
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| 107 |
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| 108 | // ---------------------------------------------------------------------------
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| 109 | // RedirectHandlers: Overrides of the SAX ErrorHandler interface
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| 110 | // ---------------------------------------------------------------------------
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| 111 | void RedirectHandlers::error(const SAXParseException& e)
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| 112 | {
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| 113 | XERCES_STD_QUALIFIER cerr << "\nError at (file " << StrX(e.getSystemId())
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| 114 | << ", line " << e.getLineNumber()
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| 115 | << ", char " << e.getColumnNumber()
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| 116 | << "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
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| 117 | }
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| 118 |
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| 119 | void RedirectHandlers::fatalError(const SAXParseException& e)
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| 120 | {
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| 121 | XERCES_STD_QUALIFIER cerr << "\nFatal Error at (file " << StrX(e.getSystemId())
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| 122 | << ", line " << e.getLineNumber()
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| 123 | << ", char " << e.getColumnNumber()
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| 124 | << "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
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| 125 | }
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| 126 |
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| 127 | void RedirectHandlers::warning(const SAXParseException& e)
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| 128 | {
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| 129 | XERCES_STD_QUALIFIER cerr << "\nWarning at (file " << StrX(e.getSystemId())
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| 130 | << ", line " << e.getLineNumber()
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| 131 | << ", char " << e.getColumnNumber()
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| 132 | << "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
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| 133 | }
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| 134 |
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| 135 |
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| 136 | // -----------------------------------------------------------------------
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| 137 | // Handlers for the SAX EntityResolver interface
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| 138 | // -----------------------------------------------------------------------
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| 139 | InputSource* RedirectHandlers::resolveEntity(const XMLCh* const publicId
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| 140 | , const XMLCh* const systemId)
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| 141 | {
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| 142 | //
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| 143 | // If its our file, then create a new URL input source for the file that
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| 144 | // we want to really be used. Otherwise, just return zero to let the
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| 145 | // default action occur.
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| 146 | //
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| 147 | // We cannot assume that the XMLCh type is ok to pass to wcscmp(), so
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| 148 | // just do a comparison ourselves.
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| 149 | //
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| 150 | const XMLCh* s1 = gFileToTrap;
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| 151 | const XMLCh* s2 = systemId;
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| 152 | while (true)
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| 153 | {
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| 154 | // Break out on any difference
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| 155 | if (*s1 != *s2)
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| 156 | return 0;
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| 157 |
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| 158 | // If one is null, then both were null, so they are equal
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| 159 | if (!*s1)
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| 160 | break;
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| 161 |
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| 162 | // Else get the next char
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| 163 | s1++;
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| 164 | s2++;
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| 165 | }
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| 166 |
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| 167 | // They were equal, so redirect to our other file
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| 168 | return new LocalFileInputSource(gRedirectToFile);
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| 169 | }
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