Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : */
9 :
10 : #include "oox/mathml/importutils.hxx"
11 :
12 : #include <assert.h>
13 : #include <stdio.h>
14 :
15 : #include <oox/token/namespacemap.hxx>
16 : #include <oox/token/tokenmap.hxx>
17 : #include <oox/token/tokens.hxx>
18 : #include <oox/token/namespaces.hxx>
19 : #include <rtl/ustring.hxx>
20 :
21 : #define OPENING( token ) XML_STREAM_OPENING( token )
22 : #define CLOSING( token ) XML_STREAM_CLOSING( token )
23 :
24 : using namespace com::sun::star;
25 :
26 : namespace oox
27 : {
28 :
29 : namespace formulaimport
30 : {
31 :
32 : namespace
33 : {
34 : // a class that inherits from AttributeList, builds the internal data and then will be sliced off
35 : // during conversion to the base class
36 0 : class AttributeListBuilder
37 : : public XmlStream::AttributeList
38 : {
39 : public:
40 : AttributeListBuilder( const uno::Reference< xml::sax::XFastAttributeList >& a );
41 : };
42 :
43 0 : AttributeListBuilder::AttributeListBuilder( const uno::Reference< xml::sax::XFastAttributeList >& a )
44 : {
45 0 : if( a.get() == NULL )
46 0 : return;
47 0 : uno::Sequence< xml::FastAttribute > aFastAttrSeq = a->getFastAttributes();
48 0 : const xml::FastAttribute* pFastAttr = aFastAttrSeq.getConstArray();
49 0 : sal_Int32 nFastAttrLength = aFastAttrSeq.getLength();
50 0 : for( int i = 0;
51 : i < nFastAttrLength;
52 : ++i )
53 : {
54 0 : attrs[ pFastAttr[ i ].Token ] = pFastAttr[ i ].Value;
55 0 : }
56 : }
57 :
58 0 : static OUString tokenToString( int token )
59 : {
60 0 : OUString tokenname = StaticTokenMap::get().getUnicodeTokenName( token & TOKEN_MASK );
61 0 : if( tokenname.isEmpty())
62 0 : tokenname = "???";
63 0 : int nmsp = ( token & NMSP_MASK & ~( TAG_OPENING | TAG_CLOSING ));
64 : #if 0 // this is awfully long
65 : OUString namespacename = StaticNamespaceMap::get().count( nmsp ) != 0
66 : ? StaticNamespaceMap::get()[ nmsp ] : OUString( "???" );
67 : #else
68 0 : OUString namespacename;
69 : // only few are needed actually
70 0 : switch( nmsp )
71 : {
72 : case NMSP_officeMath:
73 0 : namespacename = "m";
74 0 : break;
75 : case NMSP_doc:
76 0 : namespacename = "w";
77 0 : break;
78 : default:
79 0 : namespacename = "?";
80 0 : break;
81 : }
82 : #endif
83 0 : if( token == OPENING( token ))
84 0 : return "<" + namespacename + ":" + tokenname + ">";
85 0 : if( token == CLOSING( token ))
86 0 : return "</" + namespacename + ":" + tokenname + ">";
87 : // just the name itself, not specified whether opening or closing
88 0 : return namespacename + ":" + tokenname;
89 : }
90 :
91 : } // namespace
92 :
93 0 : OUString& XmlStream::AttributeList::operator[] (int token)
94 : {
95 0 : return attrs[token];
96 : }
97 :
98 0 : OUString XmlStream::AttributeList::attribute( int token, const OUString& def ) const
99 : {
100 0 : std::map< int, OUString >::const_iterator find = attrs.find( token );
101 0 : if( find != attrs.end())
102 0 : return find->second;
103 0 : return def;
104 : }
105 :
106 0 : bool XmlStream::AttributeList::attribute( int token, bool def ) const
107 : {
108 0 : std::map< int, OUString >::const_iterator find = attrs.find( token );
109 0 : if( find != attrs.end())
110 : {
111 0 : const OUString sValue = find->second;
112 0 : if( sValue.equalsIgnoreAsciiCase("true") ||
113 0 : sValue.equalsIgnoreAsciiCase("on") ||
114 0 : sValue.equalsIgnoreAsciiCase("t") ||
115 0 : sValue.equalsIgnoreAsciiCase("1") )
116 0 : return true;
117 0 : if( sValue.equalsIgnoreAsciiCase("false") ||
118 0 : sValue.equalsIgnoreAsciiCase("off") ||
119 0 : sValue.equalsIgnoreAsciiCase("f") ||
120 0 : sValue.equalsIgnoreAsciiCase("0") )
121 0 : return false;
122 0 : SAL_WARN( "oox.xmlstream", "Cannot convert \'" << sValue << "\' to bool." );
123 : }
124 0 : return def;
125 : }
126 :
127 0 : sal_Unicode XmlStream::AttributeList::attribute( int token, sal_Unicode def ) const
128 : {
129 0 : std::map< int, OUString >::const_iterator find = attrs.find( token );
130 0 : if( find != attrs.end())
131 : {
132 0 : if( !find->second.isEmpty() )
133 : {
134 0 : if( find->second.getLength() != 1 )
135 : SAL_WARN( "oox.xmlstream", "Cannot convert \'" << find->second << "\' to sal_Unicode, stripping." );
136 0 : return find->second[ 0 ];
137 : }
138 : }
139 0 : return def;
140 : }
141 :
142 0 : XmlStream::Tag::Tag( int t, const uno::Reference< xml::sax::XFastAttributeList >& a, const OUString& txt )
143 : : token( t )
144 : , attributes( AttributeListBuilder( a ))
145 0 : , text( txt )
146 : {
147 0 : }
148 :
149 0 : XmlStream::Tag::Tag( int t, const AttributeList& a )
150 : : token( t )
151 0 : , attributes( a )
152 : {
153 0 : }
154 :
155 :
156 0 : XmlStream::Tag::operator bool() const
157 : {
158 0 : return token != XML_TOKEN_INVALID;
159 : }
160 :
161 0 : XmlStream::XmlStream()
162 0 : : pos( 0 )
163 : {
164 : // make sure our extra bit does not conflict with values used by oox
165 : assert( TAG_OPENING > ( 1024 << NMSP_SHIFT ));
166 0 : }
167 :
168 0 : bool XmlStream::atEnd() const
169 : {
170 0 : return pos >= tags.size();
171 : }
172 :
173 0 : XmlStream::Tag XmlStream::currentTag() const
174 : {
175 0 : if( pos >= tags.size())
176 0 : return Tag();
177 0 : return tags[ pos ];
178 : }
179 :
180 0 : int XmlStream::currentToken() const
181 : {
182 0 : if( pos >= tags.size())
183 0 : return XML_TOKEN_INVALID;
184 0 : return tags[ pos ].token;
185 : }
186 :
187 0 : void XmlStream::moveToNextTag()
188 : {
189 0 : if( pos < tags.size())
190 0 : ++pos;
191 0 : }
192 :
193 0 : XmlStream::Tag XmlStream::ensureOpeningTag( int token )
194 : {
195 0 : return checkTag( OPENING( token ), false );
196 : }
197 :
198 0 : XmlStream::Tag XmlStream::checkOpeningTag( int token )
199 : {
200 0 : return checkTag( OPENING( token ), true );
201 : }
202 :
203 0 : void XmlStream::ensureClosingTag( int token )
204 : {
205 0 : checkTag( CLOSING( token ), false );
206 0 : }
207 :
208 0 : XmlStream::Tag XmlStream::checkTag( int token, bool optional )
209 : {
210 : // either it's the following tag, or find it
211 0 : int savedPos = pos;
212 0 : if( optional )
213 : { // avoid printing debug messages about skipping tags if the optional one
214 : // will not be found and the position will be reset back
215 0 : if( currentToken() != token && !findTagInternal( token, true ))
216 : {
217 0 : pos = savedPos;
218 0 : return Tag();
219 : }
220 : }
221 0 : if( currentToken() == token || findTag( token ))
222 : {
223 0 : Tag ret = currentTag();
224 0 : moveToNextTag();
225 0 : return ret; // ok
226 : }
227 0 : if( optional )
228 : { // not a problem, just rewind
229 0 : pos = savedPos;
230 0 : return Tag();
231 : }
232 : SAL_WARN( "oox.xmlstream", "Expected tag " << tokenToString( token ) << " not found." );
233 0 : return Tag();
234 : }
235 :
236 0 : bool XmlStream::findTag( int token )
237 : {
238 0 : return findTagInternal( token, false );
239 : }
240 :
241 0 : bool XmlStream::findTagInternal( int token, bool silent )
242 : {
243 0 : int depth = 0;
244 0 : for(;
245 0 : !atEnd();
246 0 : moveToNextTag())
247 : {
248 0 : if( depth > 0 ) // we're inside a nested element, skip those
249 : {
250 0 : if( currentToken() == OPENING( currentToken()))
251 : {
252 0 : if( !silent )
253 : SAL_INFO( "oox.xmlstream", "Skipping tag " << tokenToString( currentToken()));
254 0 : ++depth;
255 : }
256 0 : else if( currentToken() == CLOSING( currentToken()))
257 : {
258 0 : if( !silent )
259 : SAL_INFO( "oox.xmlstream", "Skipping tag " << tokenToString( currentToken()));
260 0 : --depth;
261 : }
262 : else
263 : {
264 0 : if( !silent )
265 : SAL_WARN( "oox.xmlstream", "Malformed token " << currentToken() << " ("
266 : << tokenToString( currentToken()) << ")" );
267 0 : abort();
268 : }
269 0 : continue;
270 : }
271 0 : if( currentToken() == token )
272 0 : return true; // ok, found
273 0 : if( currentToken() == CLOSING( currentToken()))
274 0 : return false; // that would be leaving current element, so not found
275 0 : if( currentToken() == OPENING( currentToken()))
276 : {
277 0 : if( !silent )
278 : SAL_INFO( "oox.xmlstream", "Skipping tag " << tokenToString( currentToken()));
279 0 : ++depth;
280 : }
281 : else
282 0 : abort();
283 : }
284 0 : if( !silent )
285 : SAL_WARN( "oox.xmlstream", "Unexpected end of stream reached." );
286 0 : return false;
287 : }
288 :
289 0 : void XmlStream::skipElementInternal( int token, bool silent )
290 : {
291 0 : int closing = ( token & ~TAG_OPENING ) | TAG_CLOSING; // make it a closing tag
292 : assert( currentToken() == OPENING( token ));
293 0 : if( !silent )
294 : SAL_INFO( "oox.xmlstream", "Skipping unexpected element " << tokenToString( currentToken()));
295 0 : moveToNextTag();
296 : // and just find the matching closing tag
297 0 : if( findTag( closing ))
298 : {
299 0 : if( !silent )
300 : SAL_INFO( "oox.xmlstream", "Skipped unexpected element " << tokenToString( token ));
301 0 : moveToNextTag(); // and skip it too
302 0 : return;
303 : }
304 : // this one is an unexpected problem, do not silent it
305 : SAL_WARN( "oox.xmlstream", "Expected end of element " << tokenToString( token ) << " not found." );
306 : }
307 :
308 0 : void XmlStream::handleUnexpectedTag()
309 : {
310 0 : if( atEnd())
311 0 : return;
312 0 : if( currentToken() == CLOSING( currentToken()))
313 : {
314 : SAL_INFO( "oox.xmlstream", "Skipping unexpected tag " << tokenToString( currentToken()));
315 0 : moveToNextTag(); // just skip it
316 0 : return;
317 : }
318 0 : skipElementInternal( currentToken(), false ); // otherwise skip the entire element
319 : }
320 :
321 :
322 0 : void XmlStreamBuilder::appendOpeningTag( int token, const uno::Reference< xml::sax::XFastAttributeList >& attrs )
323 : {
324 0 : tags.push_back( Tag( OPENING( token ), attrs ));
325 0 : }
326 :
327 0 : void XmlStreamBuilder::appendOpeningTag( int token, const AttributeList& attrs )
328 : {
329 0 : tags.push_back( Tag( OPENING( token ), attrs ));
330 0 : }
331 :
332 0 : void XmlStreamBuilder::appendClosingTag( int token )
333 : {
334 0 : tags.push_back( Tag( CLOSING( token )));
335 0 : }
336 :
337 0 : void XmlStreamBuilder::appendCharacters( const OUString& chars )
338 : {
339 : assert( !tags.empty());
340 0 : tags.back().text += chars;
341 0 : }
342 :
343 : } // namespace
344 : } // namespace
345 :
346 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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