1//
2// WhitespaceFilter.cpp
3//
4// Library: XML
5// Package: SAX
6// Module: WhitespaceFilter
7//
8// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
9// and Contributors.
10//
11// SPDX-License-Identifier: BSL-1.0
12//
13
14
15#include "Poco/SAX/WhitespaceFilter.h"
16#include "Poco/SAX/SAXException.h"
17
18
19namespace Poco {
20namespace XML {
21
22
23WhitespaceFilter::WhitespaceFilter():
24 _pLexicalHandler(0),
25 _filter(true)
26{
27}
28
29
30WhitespaceFilter::WhitespaceFilter(XMLReader* pReader):
31 XMLFilterImpl(pReader),
32 _pLexicalHandler(0),
33 _filter(true)
34{
35}
36
37
38WhitespaceFilter::~WhitespaceFilter()
39{
40}
41
42
43void WhitespaceFilter::setProperty(const XMLString& propertyId, const XMLString& value)
44{
45 if (propertyId == XMLReader::PROPERTY_LEXICAL_HANDLER)
46 throw SAXNotSupportedException(std::string("property does not take a string value: ") + fromXMLString(propertyId));
47 else
48 XMLFilterImpl::setProperty(propertyId, value);
49
50}
51
52
53void WhitespaceFilter::setProperty(const XMLString& propertyId, void* value)
54{
55 if (propertyId == XMLReader::PROPERTY_LEXICAL_HANDLER)
56 _pLexicalHandler = reinterpret_cast<LexicalHandler*>(value);
57 else
58 XMLFilterImpl::setProperty(propertyId, value);
59}
60
61
62void* WhitespaceFilter::getProperty(const XMLString& propertyId) const
63{
64 if (propertyId == XMLReader::PROPERTY_LEXICAL_HANDLER)
65 return _pLexicalHandler;
66 else
67 return XMLFilterImpl::getProperty(propertyId);
68}
69
70
71void WhitespaceFilter::startDocument()
72{
73 XMLFilterImpl::startDocument();
74 _filter = true;
75 _data.clear();
76}
77
78
79void WhitespaceFilter::endDocument()
80{
81 XMLFilterImpl::endDocument();
82 _filter = true;
83 _data.clear();
84}
85
86
87void WhitespaceFilter::startElement(const XMLString& uri, const XMLString& localName, const XMLString& qname, const Attributes& attrList)
88{
89 XMLFilterImpl::startElement(uri, localName, qname, attrList);
90 _filter = true;
91 _data.clear();
92}
93
94
95void WhitespaceFilter::endElement(const XMLString& uri, const XMLString& localName, const XMLString& qname)
96{
97 XMLFilterImpl::endElement(uri, localName, qname);
98 _filter = true;
99 _data.clear();
100}
101
102
103void WhitespaceFilter::characters(const XMLChar ch[], int start, int length)
104{
105 if (_filter)
106 {
107 bool ws = true;
108 const XMLChar* it = ch + start;
109 const XMLChar* end = ch + start + length;
110 _data.append(it, end);
111 while (it != end)
112 {
113 if (*it != '\r' && *it != '\n' && *it != '\t' && *it != ' ')
114 {
115 ws = false;
116 break;
117 }
118 ++it;
119 }
120 if (!ws)
121 {
122 XMLFilterImpl::characters(_data.data(), 0, (int) _data.length());
123 _filter = false;
124 _data.clear();
125 }
126 }
127 else XMLFilterImpl::characters(ch, start, length);
128}
129
130
131void WhitespaceFilter::ignorableWhitespace(const XMLChar ch[], int start, int length)
132{
133 // the handler name already says that this data can be ignored
134}
135
136
137void WhitespaceFilter::processingInstruction(const XMLString& target, const XMLString& data)
138{
139 XMLFilterImpl::processingInstruction(target, data);
140 _filter = true;
141 _data.clear();
142}
143
144
145void WhitespaceFilter::startDTD(const XMLString& name, const XMLString& publicId, const XMLString& systemId)
146{
147 if (_pLexicalHandler)
148 _pLexicalHandler->startDTD(name, publicId, systemId);
149}
150
151
152void WhitespaceFilter::endDTD()
153{
154 if (_pLexicalHandler)
155 _pLexicalHandler->endDTD();
156}
157
158
159void WhitespaceFilter::startEntity(const XMLString& name)
160{
161 if (_pLexicalHandler)
162 _pLexicalHandler->startEntity(name);
163 _filter = true;
164 _data.clear();
165}
166
167
168void WhitespaceFilter::endEntity(const XMLString& name)
169{
170 if (_pLexicalHandler)
171 _pLexicalHandler->endEntity(name);
172 _filter = true;
173 _data.clear();
174}
175
176
177void WhitespaceFilter::startCDATA()
178{
179 if (_pLexicalHandler)
180 _pLexicalHandler->startCDATA();
181 _filter = false;
182 _data.clear();
183}
184
185
186void WhitespaceFilter::endCDATA()
187{
188 if (_pLexicalHandler)
189 _pLexicalHandler->endCDATA();
190 _filter = true;
191 _data.clear();
192}
193
194
195void WhitespaceFilter::comment(const XMLChar ch[], int start, int length)
196{
197 if (_pLexicalHandler)
198 _pLexicalHandler->comment(ch, start, length);
199 _filter = true;
200 _data.clear();
201}
202
203
204void WhitespaceFilter::setupParse()
205{
206 XMLFilterImpl::setupParse();
207
208 parent()->setProperty(XMLReader::PROPERTY_LEXICAL_HANDLER, static_cast<LexicalHandler*>(this));
209}
210
211
212} } // namespace Poco::XML
213