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serialization-source.txx @ 119

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pridana knihovna XSD (a jeji chlebodarkyne XERCES), v ramci Win32 zprovoznen priklad tests/test_xsd_hello.cxx

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1	// file : xsd/cxx/xml/dom/serialization-source.txx
2	// author : Boris Kolpackov <boris@codesynthesis.com>
3	// copyright : Copyright (c) 2005-2008 Code Synthesis Tools CC
4	// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
5
6	#include <xercesc/util/XMLUni.hpp> // xercesc::fg*
7	#include <xercesc/util/XMLUniDefs.hpp> // chLatin_L, etc
8
9	#if _XERCES_VERSION >= 30000
10	# include <xercesc/dom/DOMLSOutput.hpp>
11	# include <xercesc/dom/DOMLSSerializer.hpp>
12	#else
13	# include <xercesc/dom/DOMWriter.hpp>
14	#endif
15	#include <xercesc/dom/DOMElement.hpp>
16	#include <xercesc/dom/DOMImplementation.hpp>
17	#include <xercesc/dom/DOMImplementationRegistry.hpp>
18
19	#include <xsd/cxx/xml/string.hxx>
20	#include <xsd/cxx/xml/bits/literals.hxx>
21	#include <xsd/cxx/xml/dom/bits/error-handler-proxy.hxx>
22
23	namespace xsd
24	{
25	namespace cxx
26	{
27	namespace xml
28	{
29	namespace dom
30	{
31	//
32	//
33	template <typename C>
34	xercesc::DOMAttr&
35	create_attribute (const C* name, xercesc::DOMElement& parent)
36	{
37	xercesc::DOMDocument* doc (parent.getOwnerDocument ());
38	xercesc::DOMAttr* a (doc->createAttribute (string (name).c_str ()));
39	parent.setAttributeNode (a);
40	return *a;
41	}
42
43	template <typename C>
44	xercesc::DOMAttr&
45	create_attribute (const C* name,
46	const C* ns,
47	xercesc::DOMElement& parent)
48	{
49	if (ns[0] == C ('\0'))
50	return create_attribute (name, parent);
51
52	xercesc::DOMDocument* doc (parent.getOwnerDocument ());
53
54	xercesc::DOMAttr* a;
55	std::basic_string<C> p (prefix<C> (ns, parent));
56
57	if (!p.empty ())
58	{
59	p += ':';
60	p += name;
61	a = doc->createAttributeNS (string (ns).c_str (),
62	string (p).c_str ());
63	}
64	else
65	a = doc->createAttributeNS (string (ns).c_str (),
66	string (name).c_str ());
67
68	parent.setAttributeNodeNS (a);
69	return *a;
70	}
71
72	template <typename C>
73	xercesc::DOMElement&
74	create_element (const C* name, xercesc::DOMElement& parent)
75	{
76	xercesc::DOMDocument* doc (parent.getOwnerDocument ());
77	xercesc::DOMElement* e (doc->createElement (string (name).c_str ()));
78	parent.appendChild (e);
79	return *e;
80	}
81
82	template <typename C>
83	xercesc::DOMElement&
84	create_element (const C* name,
85	const C* ns,
86	xercesc::DOMElement& parent)
87	{
88	if (ns[0] == C ('\0'))
89	return create_element (name, parent);
90
91	xercesc::DOMDocument* doc (parent.getOwnerDocument ());
92
93	xercesc::DOMElement* e;
94	std::basic_string<C> p (prefix<C> (ns, parent));
95
96	if (!p.empty ())
97	{
98	p += ':';
99	p += name;
100	e = doc->createElementNS (string (ns).c_str (),
101	string (p).c_str ());
102	}
103	else
104	e = doc->createElementNS (string (ns).c_str (),
105	string (name).c_str ());
106
107	parent.appendChild (e);
108	return *e;
109	}
110
111
112	//
113	//
114	template <typename C>
115	auto_ptr<xercesc::DOMDocument>
116	serialize (const std::basic_string<C>& el,
117	const std::basic_string<C>& ns,
118	const namespace_infomap<C>& map,
119	unsigned long)
120	{
121	// HP aCC cannot handle using namespace xercesc;
122	//
123	using xercesc::DOMImplementationRegistry;
124	using xercesc::DOMImplementation;
125	using xercesc::DOMDocument;
126	using xercesc::DOMElement;
127
128	//
129	//
130	typedef std::basic_string<C> string;
131	typedef namespace_infomap<C> infomap;
132	typedef typename infomap::const_iterator infomap_iterator;
133
134	C colon (':'), space (' ');
135
136	string prefix;
137
138	if (!ns.empty ())
139	{
140	infomap_iterator i (map.begin ()), e (map.end ());
141
142	for ( ;i != e; ++i)
143	{
144	if (i->second.name == ns)
145	{
146	prefix = i->first;
147	break;
148	}
149	}
150
151	if (i == e)
152	throw mapping<C> (ns);
153	}
154
155	const XMLCh ls[] = {xercesc::chLatin_L,
156	xercesc::chLatin_S,
157	xercesc::chNull};
158
159	DOMImplementation* impl (
160	DOMImplementationRegistry::getDOMImplementation (ls));
161
162	auto_ptr<DOMDocument> doc (
163	impl->createDocument (
164	(ns.empty () ? 0 : xml::string (ns).c_str ()),
165	xml::string ((prefix.empty ()
166	? el
167	: prefix + colon + el)).c_str (),
168	0));
169
170	DOMElement* root (doc->getDocumentElement ());
171
172	// Check if we need to provide xsi mapping.
173	//
174	bool xsi (false);
175	string xsi_prefix (xml::bits::xsi_prefix<C> ());
176	string xmlns_prefix (xml::bits::xmlns_prefix<C> ());
177
178	for (infomap_iterator i (map.begin ()), e (map.end ()); i != e; ++i)
179	{
180	if (!i->second.schema.empty ())
181	{
182	xsi = true;
183	break;
184	}
185	}
186
187	// Check if we were told to provide xsi mapping.
188	//
189	if (xsi)
190	{
191	for (infomap_iterator i (map.begin ()), e (map.end ());
192	i != e;
193	++i)
194	{
195	if (i->second.name == xml::bits::xsi_namespace<C> ())
196	{
197	xsi_prefix = i->first;
198	xsi = false;
199	break;
200	}
201	}
202
203	if (xsi)
204	{
205	// If we were not told to provide xsi mapping, make sure our
206	// prefix does not conflict with user-defined prefixes.
207	//
208	infomap_iterator i (map.find (xsi_prefix));
209
210	if (i != map.end ())
211	throw xsi_already_in_use ();
212	}
213	}
214
215	// Create xmlns:xsi attribute.
216	//
217	if (xsi)
218	{
219	root->setAttributeNS (
220	xml::string (xml::bits::xmlns_namespace<C> ()).c_str (),
221	xml::string (xmlns_prefix + colon + xsi_prefix).c_str (),
222	xml::string (xml::bits::xsi_namespace<C> ()).c_str ());
223	}
224
225
226	// Create user-defined mappings.
227	//
228	for (infomap_iterator i (map.begin ()), e (map.end ()); i != e; ++i)
229	{
230	if (i->first.empty ())
231	{
232	// Empty prefix.
233	//
234	if (!i->second.name.empty ())
235	root->setAttributeNS (
236	xml::string (xml::bits::xmlns_namespace<C> ()).c_str (),
237	xml::string (xmlns_prefix).c_str (),
238	xml::string (i->second.name).c_str ());
239	}
240	else
241	{
242	root->setAttributeNS (
243	xml::string (xml::bits::xmlns_namespace<C> ()).c_str (),
244	xml::string (xmlns_prefix + colon + i->first).c_str (),
245	xml::string (i->second.name).c_str ());
246	}
247	}
248
249	// Create xsi:schemaLocation and xsi:noNamespaceSchemaLocation
250	// attributes.
251	//
252	string schema_location;
253	string no_namespace_schema_location;
254
255	for (infomap_iterator i (map.begin ()), e (map.end ()); i != e; ++i)
256	{
257	if (!i->second.schema.empty ())
258	{
259	if (i->second.name.empty ())
260	{
261	if (!no_namespace_schema_location.empty ())
262	no_namespace_schema_location += space;
263
264	no_namespace_schema_location += i->second.schema;
265	}
266	else
267	{
268	if (!schema_location.empty ())
269	schema_location += space;
270
271	schema_location += i->second.name + space + i->second.schema;
272	}
273	}
274	}
275
276	if (!schema_location.empty ())
277	{
278	root->setAttributeNS (
279	xml::string (xml::bits::xsi_namespace<C> ()).c_str (),
280	xml::string (xsi_prefix + colon +
281	xml::bits::schema_location<C> ()).c_str (),
282	xml::string (schema_location).c_str ());
283	}
284
285	if (!no_namespace_schema_location.empty ())
286	{
287	root->setAttributeNS (
288	xml::string (xml::bits::xsi_namespace<C> ()).c_str (),
289	xml::string (
290	xsi_prefix + colon +
291	xml::bits::no_namespace_schema_location<C> ()).c_str (),
292	xml::string (no_namespace_schema_location).c_str ());
293	}
294
295	return doc;
296	}
297
298
299	template <typename C>
300	bool
301	serialize (xercesc::XMLFormatTarget& target,
302	const xercesc::DOMDocument& doc,
303	const std::basic_string<C>& encoding,
304	xercesc::DOMErrorHandler& eh,
305	unsigned long flags)
306	{
307	// HP aCC cannot handle using namespace xercesc;
308	//
309	using xercesc::DOMImplementationRegistry;
310	using xercesc::DOMImplementation;
311	#if _XERCES_VERSION >= 30000
312	using xercesc::DOMLSSerializer;
313	using xercesc::DOMConfiguration;
314	using xercesc::DOMLSOutput;
315	#else
316	using xercesc::DOMWriter;
317	#endif
318	using xercesc::XMLUni;
319
320	const XMLCh ls[] = {xercesc::chLatin_L,
321	xercesc::chLatin_S,
322	xercesc::chNull};
323
324	DOMImplementation* impl (
325	DOMImplementationRegistry::getDOMImplementation (ls));
326
327	bits::error_handler_proxy<C> ehp (eh);
328
329	#if _XERCES_VERSION >= 30000
330	xml::dom::auto_ptr<DOMLSSerializer> writer (
331	impl->createLSSerializer ());
332
333	DOMConfiguration* conf (writer->getDomConfig ());
334
335	conf->setParameter (XMLUni::fgDOMErrorHandler, &ehp);
336
337	// Set some nice features if the serializer supports them.
338	//
339	if (conf->canSetParameter (
340	XMLUni::fgDOMWRTDiscardDefaultContent, true))
341	conf->setParameter (XMLUni::fgDOMWRTDiscardDefaultContent, true);
342
343	if (conf->canSetParameter (XMLUni::fgDOMWRTFormatPrettyPrint, true))
344	conf->setParameter (XMLUni::fgDOMWRTFormatPrettyPrint, true);
345
346	// See if we need to write XML declaration.
347	//
348	if ((flags & no_xml_declaration) &&
349	conf->canSetParameter (XMLUni::fgDOMXMLDeclaration, false))
350	conf->setParameter (XMLUni::fgDOMXMLDeclaration, false);
351
352	xml::dom::auto_ptr<DOMLSOutput> out (impl->createLSOutput ());
353
354	out->setEncoding (xml::string (encoding).c_str ());
355	out->setByteStream (&target);
356
357	bool r (writer->write (&doc, out.get ()));
358	#else
359	xml::dom::auto_ptr<DOMWriter> writer (impl->createDOMWriter ());
360
361	writer->setErrorHandler (&ehp);
362	writer->setEncoding (xml::string (encoding).c_str ());
363
364	// Set some nice features if the serializer supports them.
365	//
366	if (writer->canSetFeature (
367	XMLUni::fgDOMWRTDiscardDefaultContent, true))
368	writer->setFeature (XMLUni::fgDOMWRTDiscardDefaultContent, true);
369
370	if (writer->canSetFeature (XMLUni::fgDOMWRTFormatPrettyPrint, true))
371	writer->setFeature (XMLUni::fgDOMWRTFormatPrettyPrint, true);
372
373	// See if we need to write XML declaration.
374	//
375	if ((flags & no_xml_declaration) &&
376	writer->canSetFeature (XMLUni::fgDOMXMLDeclaration, false))
377	writer->setFeature (XMLUni::fgDOMXMLDeclaration, false);
378
379	bool r (writer->writeNode (&target, doc));
380	#endif
381
382	if (!r \|\| ehp.failed ())
383	return false;
384
385	return true;
386	}
387
388	template <typename C>
389	bool
390	serialize (xercesc::XMLFormatTarget& target,
391	const xercesc::DOMDocument& doc,
392	const std::basic_string<C>& enconding,
393	error_handler<C>& eh,
394	unsigned long flags)
395	{
396	bits::error_handler_proxy<C> ehp (eh);
397	return serialize (target, doc, enconding, ehp, flags);
398	}
399	}
400	}
401	}
402	}

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