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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 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <iostream>
21 : #include <stdlib.h>
22 : #include <ctype.h>
23 : #include <stdio.h>
24 : #include <cstring>
25 : #include "filterdetect.hxx"
26 : #include <osl/diagnose.h>
27 : #include <com/sun/star/io/XActiveDataSource.hpp>
28 : #include <com/sun/star/io/XOutputStream.hpp>
29 : #include <com/sun/star/io/XInputStream.hpp>
30 : #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
31 : #include <com/sun/star/xml/sax/InputSource.hpp>
32 : #include <com/sun/star/xml/sax/XParser.hpp>
33 : #include <com/sun/star/xml/XImportFilter.hpp>
34 : #include <com/sun/star/xml/XExportFilter.hpp>
35 : #include <com/sun/star/frame/XController.hpp>
36 : #include <com/sun/star/task/XStatusIndicator.hpp>
37 : #include <com/sun/star/task/XStatusIndicatorFactory.hpp>
38 : #include <com/sun/star/style/XStyleFamiliesSupplier.hpp>
39 : #include <com/sun/star/style/XStyleLoader.hpp>
40 : #include <com/sun/star/uno/XComponentContext.hpp>
41 : #include <com/sun/star/document/XExtendedFilterDetection.hpp>
42 : #include <com/sun/star/container/XNameAccess.hpp>
43 : #include <com/sun/star/beans/PropertyState.hpp>
44 : #include <ucbhelper/content.hxx>
45 :
46 : using com::sun::star::uno::Sequence;
47 : using com::sun::star::uno::Reference;
48 : using com::sun::star::uno::Any;
49 : using com::sun::star::uno::UNO_QUERY;
50 : using com::sun::star::uno::XComponentContext;
51 : using com::sun::star::uno::XInterface;
52 : using com::sun::star::uno::Exception;
53 : using com::sun::star::uno::RuntimeException;
54 : using com::sun::star::io::XActiveDataSource;
55 : using com::sun::star::io::XOutputStream;
56 : using com::sun::star::beans::PropertyValue;
57 : using com::sun::star::document::XExporter;
58 : using com::sun::star::document::XFilter;
59 : using com::sun::star::document::XExtendedFilterDetection;
60 :
61 : using com::sun::star::io::XInputStream;
62 : using com::sun::star::document::XImporter;
63 : using com::sun::star::xml::sax::InputSource;
64 : using com::sun::star::xml::sax::XDocumentHandler;
65 : using com::sun::star::xml::sax::XParser;
66 :
67 : using namespace ::com::sun::star::frame;
68 : using namespace ::com::sun::star;
69 : using namespace com::sun::star::container;
70 : using namespace com::sun::star::uno;
71 : using namespace com::sun::star::beans;
72 :
73 : namespace {
74 :
75 1 : bool isXMLStream(const OString& aHeaderStrm)
76 : {
77 1 : const char* p = aHeaderStrm.getStr();
78 1 : size_t n = aHeaderStrm.getLength();
79 1 : size_t i = 0;
80 :
81 : // Skip all preceding blank characters.
82 1 : for (i = 0; i < n; ++i, ++p)
83 : {
84 1 : sal_Char c = *p;
85 1 : if (c == ' ' || c == '\n' || c == '\t')
86 0 : continue;
87 1 : break;
88 : }
89 :
90 1 : n -= i;
91 :
92 : // First text must be '<?xml', else it's not a valid XML file stream.
93 1 : const char* sInitChars = "<?xml";
94 1 : const size_t nInitCharLen = std::strlen(sInitChars);
95 2 : for (i = 0; i < n; ++i, ++p)
96 : {
97 2 : if (i < nInitCharLen)
98 : {
99 2 : if (*p != sInitChars[i])
100 1 : return false;
101 : }
102 : }
103 0 : return true;
104 : }
105 :
106 0 : OUString supportedByType( const OUString clipBoardFormat , const OString resultString, const OUString checkType)
107 : {
108 0 : OUString sTypeName;
109 0 : if ( clipBoardFormat.match(OUString("doctype:")) )
110 : {
111 0 : OString tryStr = OUStringToOString(clipBoardFormat.copy(8),RTL_TEXTENCODING_ASCII_US).getStr();
112 0 : if (resultString.indexOf(tryStr) >= 0)
113 : {
114 0 : sTypeName = checkType;
115 0 : }
116 : }
117 0 : return sTypeName;
118 : }
119 :
120 : }
121 :
122 1 : OUString SAL_CALL FilterDetect::detect( com::sun::star::uno::Sequence< com::sun::star::beans::PropertyValue >& aArguments ) throw( com::sun::star::uno::RuntimeException )
123 : {
124 1 : OUString sTypeName;
125 2 : OUString sUrl;
126 2 : Sequence<PropertyValue > lProps ;
127 :
128 2 : com::sun::star::uno::Reference< com::sun::star::io::XInputStream > xInStream;
129 1 : const PropertyValue * pValue = aArguments.getConstArray();
130 : sal_Int32 nLength;
131 2 : OString resultString;
132 :
133 1 : nLength = aArguments.getLength();
134 1 : sal_Int32 location=nLength;
135 10 : for (sal_Int32 i = 0 ; i < nLength; i++)
136 : {
137 9 : if ( pValue[i].Name == "TypeName" )
138 : {
139 1 : location=i;
140 : }
141 8 : else if ( pValue[i].Name == "URL" )
142 : {
143 1 : pValue[i].Value >>= sUrl;
144 : }
145 7 : else if ( pValue[i].Name == "InputStream" )
146 : {
147 1 : pValue[i].Value >>= xInStream ;
148 : }
149 : }
150 : try
151 : {
152 1 : if (!xInStream.is())
153 : {
154 : ::ucbhelper::Content aContent(
155 : sUrl, Reference< com::sun::star::ucb::XCommandEnvironment >(),
156 0 : mxCtx);
157 0 : xInStream = aContent.openStream();
158 0 : if (!xInStream.is())
159 : {
160 0 : return sTypeName;
161 0 : }
162 : }
163 1 : com::sun::star::uno::Sequence< sal_Int8 > aData;
164 1 : /* long nBytesToRead= */ xInStream->available();
165 1 : xInStream->skipBytes (0);
166 1 : long bytestRead =xInStream->readBytes (aData, 4000);
167 1 : resultString=OString((const sal_Char *)aData.getConstArray(),bytestRead) ;
168 :
169 1 : if (!isXMLStream(resultString))
170 : // This is not an XML stream. It makes no sense to try to detect
171 : // a non-XML file type here.
172 1 : return OUString();
173 :
174 : // test typedetect code
175 0 : Reference <XNameAccess> xTypeCont(mxCtx->getServiceManager()->createInstanceWithContext("com.sun.star.document.TypeDetection", mxCtx), UNO_QUERY);
176 0 : Sequence < OUString > myTypes= xTypeCont->getElementNames();
177 0 : nLength = myTypes.getLength();
178 :
179 0 : sal_Int32 new_nlength=0;
180 0 : sal_Int32 i = 0 ;
181 0 : while ((i < nLength) && (sTypeName.isEmpty()))
182 : {
183 0 : Any elem = xTypeCont->getByName(myTypes[i]);
184 0 : elem >>=lProps;
185 0 : new_nlength = lProps.getLength();
186 0 : sal_Int32 j =0;
187 0 : while (j < new_nlength && (sTypeName.isEmpty()))
188 : {
189 0 : OUString tmpStr;
190 0 : lProps[j].Value >>=tmpStr;
191 0 : if ( lProps[j].Name == "ClipboardFormat" && !tmpStr.isEmpty() )
192 : {
193 0 : sTypeName = supportedByType(tmpStr,resultString, myTypes[i]);
194 : }
195 0 : j++;
196 0 : }
197 0 : i++;
198 0 : }
199 : }
200 0 : catch (const Exception &)
201 : {
202 : OSL_FAIL( "An Exception occurred while opening File stream" );
203 : }
204 :
205 0 : if (!sTypeName.isEmpty())
206 : {
207 0 : if (location == aArguments.getLength())
208 : {
209 0 : aArguments.realloc(nLength+1);
210 0 : aArguments[location].Name = OUString( "TypeName" );
211 : }
212 0 : aArguments[location].Value <<=sTypeName;
213 : }
214 :
215 1 : return sTypeName;
216 : }
217 :
218 : // XInitialization
219 :
220 0 : void SAL_CALL FilterDetect::initialize( const Sequence< Any >& aArguments )
221 : throw (Exception, RuntimeException)
222 : {
223 0 : Sequence < PropertyValue > aAnySeq;
224 0 : sal_Int32 nLength = aArguments.getLength();
225 0 : if ( nLength && ( aArguments[0] >>= aAnySeq ) )
226 : {
227 0 : const PropertyValue * pValue = aAnySeq.getConstArray();
228 0 : nLength = aAnySeq.getLength();
229 0 : for ( sal_Int32 i = 0 ; i < nLength; i++)
230 : {
231 :
232 0 : if ( pValue[i].Name == "Type" )
233 : {
234 0 : pValue[i].Value >>= msFilterName;
235 :
236 : }
237 0 : else if ( pValue[i].Name == "UserData" )
238 : {
239 :
240 0 : pValue[i].Value >>= msUserData;
241 :
242 : }
243 0 : else if ( pValue[i].Name == "TemplateName" )
244 : {
245 :
246 0 : pValue[i].Value>>=msTemplateName;
247 : }
248 :
249 : }
250 0 : }
251 0 : }
252 :
253 :
254 :
255 1 : OUString FilterDetect_getImplementationName ()
256 : {
257 1 : return OUString( "com.sun.star.comp.filters.XMLFilterDetect" );
258 : }
259 : #define SERVICE_NAME1 "com.sun.star.document.ExtendedTypeDetection"
260 :
261 1 : Sequence< OUString > FilterDetect_getSupportedServiceNames()
262 : {
263 1 : Sequence < OUString > aRet(1);
264 1 : aRet[0] = SERVICE_NAME1;
265 1 : return aRet;
266 : }
267 :
268 1 : Reference< XInterface > FilterDetect_createInstance( const Reference< XComponentContext > & context)
269 : {
270 1 : return static_cast< cppu::OWeakObject * >( new FilterDetect( context ) );
271 : }
272 :
273 : // XServiceInfo
274 0 : OUString SAL_CALL FilterDetect::getImplementationName( )
275 : throw (RuntimeException)
276 : {
277 0 : return FilterDetect_getImplementationName();
278 : }
279 0 : sal_Bool SAL_CALL FilterDetect::supportsService( const OUString& rServiceName )
280 : throw (RuntimeException)
281 : {
282 0 : return rServiceName == SERVICE_NAME1;
283 : }
284 0 : Sequence< OUString > SAL_CALL FilterDetect::getSupportedServiceNames( )
285 : throw (RuntimeException)
286 : {
287 0 : return FilterDetect_getSupportedServiceNames();
288 3 : }
289 :
290 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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