| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: xml.cpp |
| 3 | // Purpose: wxXmlDocument - XML parser & data holder class |
| 4 | // Author: Vaclav Slavik |
| 5 | // Created: 2000/03/05 |
| 6 | // RCS-ID: $Id$ |
| 7 | // Copyright: (c) 2000 Vaclav Slavik |
| 8 | // Licence: wxWindows licence |
| 9 | ///////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | #ifdef __GNUG__ |
| 12 | #pragma implementation "xml.h" |
| 13 | #pragma implementation "xmlio.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | |
| 24 | #include "wx/wfstream.h" |
| 25 | #include "wx/datstrm.h" |
| 26 | #include "wx/zstream.h" |
| 27 | #include "wx/log.h" |
| 28 | #include "wx/intl.h" |
| 29 | |
| 30 | #include "wx/xrc/xml.h" |
| 31 | #include "wx/xrc/xmlio.h" |
| 32 | |
| 33 | |
| 34 | |
| 35 | wxXmlNode::wxXmlNode(wxXmlNode *parent,wxXmlNodeType type, |
| 36 | const wxString& name, const wxString& content, |
| 37 | wxXmlProperty *props, wxXmlNode *next) |
| 38 | : m_type(type), m_name(name), m_content(content), |
| 39 | m_properties(props), m_parent(parent), |
| 40 | m_children(NULL), m_next(next) |
| 41 | { |
| 42 | if (m_parent) |
| 43 | { |
| 44 | if (m_parent->m_children) |
| 45 | { |
| 46 | m_next = m_parent->m_children; |
| 47 | m_parent->m_children = this; |
| 48 | } |
| 49 | else |
| 50 | m_parent->m_children = this; |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | |
| 55 | |
| 56 | wxXmlNode::wxXmlNode(wxXmlNodeType type, const wxString& name, |
| 57 | const wxString& content) |
| 58 | : m_type(type), m_name(name), m_content(content), |
| 59 | m_properties(NULL), m_parent(NULL), |
| 60 | m_children(NULL), m_next(NULL) |
| 61 | {} |
| 62 | |
| 63 | |
| 64 | |
| 65 | wxXmlNode::wxXmlNode(const wxXmlNode& node) |
| 66 | { |
| 67 | m_next = NULL; |
| 68 | m_parent = NULL; |
| 69 | DoCopy(node); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | |
| 74 | wxXmlNode& wxXmlNode::operator=(const wxXmlNode& node) |
| 75 | { |
| 76 | delete m_properties; |
| 77 | delete m_children; |
| 78 | DoCopy(node); |
| 79 | return *this; |
| 80 | } |
| 81 | |
| 82 | |
| 83 | |
| 84 | void wxXmlNode::DoCopy(const wxXmlNode& node) |
| 85 | { |
| 86 | m_type = node.m_type; |
| 87 | m_name = node.m_name; |
| 88 | m_content = node.m_content; |
| 89 | m_children = NULL; |
| 90 | |
| 91 | wxXmlNode *n = node.m_children; |
| 92 | while (n) |
| 93 | { |
| 94 | AddChild(new wxXmlNode(*n)); |
| 95 | n = n->GetNext(); |
| 96 | } |
| 97 | |
| 98 | m_properties = NULL; |
| 99 | wxXmlProperty *p = node.m_properties; |
| 100 | while (p) |
| 101 | { |
| 102 | AddProperty(p->GetName(), p->GetValue()); |
| 103 | p = p->GetNext(); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | |
| 108 | bool wxXmlNode::HasProp(const wxString& propName) const |
| 109 | { |
| 110 | wxXmlProperty *prop = GetProperties(); |
| 111 | |
| 112 | while (prop) |
| 113 | { |
| 114 | if (prop->GetName() == propName) return TRUE; |
| 115 | prop = prop->GetNext(); |
| 116 | } |
| 117 | |
| 118 | return FALSE; |
| 119 | } |
| 120 | |
| 121 | |
| 122 | |
| 123 | bool wxXmlNode::GetPropVal(const wxString& propName, wxString *value) const |
| 124 | { |
| 125 | wxXmlProperty *prop = GetProperties(); |
| 126 | |
| 127 | while (prop) |
| 128 | { |
| 129 | if (prop->GetName() == propName) |
| 130 | { |
| 131 | *value = prop->GetValue(); |
| 132 | return TRUE; |
| 133 | } |
| 134 | prop = prop->GetNext(); |
| 135 | } |
| 136 | |
| 137 | return FALSE; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | |
| 142 | wxString wxXmlNode::GetPropVal(const wxString& propName, const wxString& defaultVal) const |
| 143 | { |
| 144 | wxString tmp; |
| 145 | if (GetPropVal(propName, &tmp)) |
| 146 | return tmp; |
| 147 | else |
| 148 | return defaultVal; |
| 149 | } |
| 150 | |
| 151 | |
| 152 | |
| 153 | void wxXmlNode::AddChild(wxXmlNode *child) |
| 154 | { |
| 155 | if (m_children == NULL) |
| 156 | m_children = child; |
| 157 | else |
| 158 | { |
| 159 | wxXmlNode *ch = m_children; |
| 160 | while (ch->m_next) ch = ch->m_next; |
| 161 | ch->m_next = child; |
| 162 | } |
| 163 | child->m_next = NULL; |
| 164 | child->m_parent = this; |
| 165 | } |
| 166 | |
| 167 | |
| 168 | |
| 169 | void wxXmlNode::InsertChild(wxXmlNode *child, wxXmlNode *before_node) |
| 170 | { |
| 171 | wxASSERT_MSG(before_node->GetParent() == this, wxT("wxXmlNode::InsertChild - the node has incorrect parent")); |
| 172 | |
| 173 | if (m_children == before_node) |
| 174 | m_children = child; |
| 175 | else |
| 176 | { |
| 177 | wxXmlNode *ch = m_children; |
| 178 | while (ch->m_next != before_node) ch = ch->m_next; |
| 179 | ch->m_next = child; |
| 180 | } |
| 181 | |
| 182 | child->m_parent = this; |
| 183 | child->m_next = before_node; |
| 184 | } |
| 185 | |
| 186 | |
| 187 | |
| 188 | bool wxXmlNode::RemoveChild(wxXmlNode *child) |
| 189 | { |
| 190 | if (m_children == NULL) |
| 191 | return FALSE; |
| 192 | else if (m_children == child) |
| 193 | { |
| 194 | m_children = child->m_next; |
| 195 | child->m_parent = NULL; |
| 196 | child->m_next = NULL; |
| 197 | return TRUE; |
| 198 | } |
| 199 | else |
| 200 | { |
| 201 | wxXmlNode *ch = m_children; |
| 202 | while (ch->m_next) |
| 203 | { |
| 204 | if (ch->m_next == child) |
| 205 | { |
| 206 | ch->m_next = child->m_next; |
| 207 | child->m_parent = NULL; |
| 208 | child->m_next = NULL; |
| 209 | return TRUE; |
| 210 | } |
| 211 | ch = ch->m_next; |
| 212 | } |
| 213 | return FALSE; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | |
| 218 | |
| 219 | void wxXmlNode::AddProperty(const wxString& name, const wxString& value) |
| 220 | { |
| 221 | AddProperty(new wxXmlProperty(name, value, NULL)); |
| 222 | } |
| 223 | |
| 224 | void wxXmlNode::AddProperty(wxXmlProperty *prop) |
| 225 | { |
| 226 | if (m_properties == NULL) |
| 227 | m_properties = prop; |
| 228 | else |
| 229 | { |
| 230 | wxXmlProperty *p = m_properties; |
| 231 | while (p->GetNext()) p = p->GetNext(); |
| 232 | p->SetNext(prop); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | |
| 237 | |
| 238 | bool wxXmlNode::DeleteProperty(const wxString& name) |
| 239 | { |
| 240 | if (m_properties == NULL) |
| 241 | return FALSE; |
| 242 | |
| 243 | else if (m_properties->GetName() == name) |
| 244 | { |
| 245 | wxXmlProperty *prop = m_properties; |
| 246 | m_properties = prop->GetNext(); |
| 247 | prop->SetNext(NULL); |
| 248 | delete prop; |
| 249 | return TRUE; |
| 250 | } |
| 251 | |
| 252 | else |
| 253 | { |
| 254 | wxXmlProperty *p = m_properties; |
| 255 | while (p->GetNext()) |
| 256 | { |
| 257 | if (p->GetNext()->GetName() == name) |
| 258 | { |
| 259 | wxXmlProperty *prop = p->GetNext(); |
| 260 | p->SetNext(prop->GetNext()); |
| 261 | prop->SetNext(NULL); |
| 262 | delete prop; |
| 263 | return TRUE; |
| 264 | } |
| 265 | p = p->GetNext(); |
| 266 | } |
| 267 | return FALSE; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | |
| 272 | |
| 273 | |
| 274 | |
| 275 | |
| 276 | |
| 277 | |
| 278 | wxList *wxXmlDocument::sm_handlers = NULL; |
| 279 | |
| 280 | |
| 281 | |
| 282 | wxXmlDocument::wxXmlDocument(const wxString& filename, wxXmlIOType io_type) |
| 283 | : wxObject(), m_root(NULL) |
| 284 | { |
| 285 | if (!Load(filename, io_type)) |
| 286 | { |
| 287 | delete m_root; |
| 288 | m_root = NULL; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | |
| 293 | |
| 294 | wxXmlDocument::wxXmlDocument(wxInputStream& stream, wxXmlIOType io_type) |
| 295 | : wxObject(), m_root(NULL) |
| 296 | { |
| 297 | if (!Load(stream, io_type)) |
| 298 | { |
| 299 | delete m_root; |
| 300 | m_root = NULL; |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | |
| 305 | |
| 306 | wxXmlDocument::wxXmlDocument(const wxXmlDocument& doc) |
| 307 | { |
| 308 | DoCopy(doc); |
| 309 | } |
| 310 | |
| 311 | |
| 312 | |
| 313 | wxXmlDocument& wxXmlDocument::operator=(const wxXmlDocument& doc) |
| 314 | { |
| 315 | delete m_root; |
| 316 | DoCopy(doc); |
| 317 | return *this; |
| 318 | } |
| 319 | |
| 320 | |
| 321 | |
| 322 | void wxXmlDocument::DoCopy(const wxXmlDocument& doc) |
| 323 | { |
| 324 | m_version = doc.m_version; |
| 325 | m_encoding = doc.m_encoding; |
| 326 | m_root = new wxXmlNode(*doc.m_root); |
| 327 | } |
| 328 | |
| 329 | |
| 330 | |
| 331 | bool wxXmlDocument::Load(const wxString& filename, wxXmlIOType io_type) |
| 332 | { |
| 333 | wxFileInputStream stream(filename); |
| 334 | return Load(stream, io_type); |
| 335 | } |
| 336 | |
| 337 | |
| 338 | |
| 339 | bool wxXmlDocument::Load(wxInputStream& stream, wxXmlIOType io_type) |
| 340 | { |
| 341 | wxNode *n = sm_handlers->GetFirst(); |
| 342 | while (n) |
| 343 | { |
| 344 | wxXmlIOHandler *h = (wxXmlIOHandler*) n->GetData(); |
| 345 | |
| 346 | if ((io_type == wxXML_IO_AUTO || io_type == h->GetType()) && |
| 347 | h->CanLoad(stream)) |
| 348 | { |
| 349 | return h->Load(stream, *this); |
| 350 | } |
| 351 | n = n->GetNext(); |
| 352 | } |
| 353 | wxLogError(_("Cannot find XML I/O handler capable of loading this format.")); |
| 354 | return FALSE; |
| 355 | } |
| 356 | |
| 357 | |
| 358 | |
| 359 | bool wxXmlDocument::Save(const wxString& filename, wxXmlIOType io_type) const |
| 360 | { |
| 361 | wxFileOutputStream stream(filename); |
| 362 | return Save(stream, io_type); |
| 363 | } |
| 364 | |
| 365 | |
| 366 | |
| 367 | bool wxXmlDocument::Save(wxOutputStream& stream, wxXmlIOType io_type) const |
| 368 | { |
| 369 | wxNode *n = sm_handlers->GetFirst(); |
| 370 | while (n) |
| 371 | { |
| 372 | wxXmlIOHandler *h = (wxXmlIOHandler*) n->GetData(); |
| 373 | if (io_type == h->GetType() && h->CanSave()) |
| 374 | { |
| 375 | return h->Save(stream, *this); |
| 376 | } |
| 377 | n = n->GetNext(); |
| 378 | } |
| 379 | wxLogError(_("Cannot find XML I/O handler capable of saving in this format.")); |
| 380 | return FALSE; |
| 381 | } |
| 382 | |
| 383 | |
| 384 | |
| 385 | |
| 386 | |
| 387 | |
| 388 | void wxXmlDocument::AddHandler(wxXmlIOHandler *handler) |
| 389 | { |
| 390 | if (sm_handlers == NULL) |
| 391 | { |
| 392 | sm_handlers = new wxList; |
| 393 | sm_handlers->DeleteContents(TRUE); |
| 394 | } |
| 395 | sm_handlers->Append(handler); |
| 396 | } |
| 397 | |
| 398 | |
| 399 | void wxXmlDocument::CleanUpHandlers() |
| 400 | { |
| 401 | delete sm_handlers; |
| 402 | sm_handlers = NULL; |
| 403 | } |
| 404 | |
| 405 | |
| 406 | void wxXmlDocument::InitStandardHandlers() |
| 407 | { |
| 408 | AddHandler(new wxXmlIOHandlerBin); |
| 409 | #if wxUSE_ZLIB |
| 410 | AddHandler(new wxXmlIOHandlerBinZ); |
| 411 | #endif |
| 412 | AddHandler(new wxXmlIOHandlerExpat); |
| 413 | AddHandler(new wxXmlIOHandlerWriter); |
| 414 | } |
| 415 | |
| 416 | |
| 417 | #include "wx/module.h" |
| 418 | |
| 419 | class wxXmlModule: public wxModule |
| 420 | { |
| 421 | DECLARE_DYNAMIC_CLASS(wxXmlModule) |
| 422 | public: |
| 423 | wxXmlModule() {} |
| 424 | bool OnInit() { wxXmlDocument::InitStandardHandlers(); return TRUE; }; |
| 425 | void OnExit() { wxXmlDocument::CleanUpHandlers(); }; |
| 426 | }; |
| 427 | |
| 428 | IMPLEMENT_DYNAMIC_CLASS(wxXmlModule, wxModule) |
| 429 | |
| 430 | |
| 431 | |
| 432 | |
| 433 | // When wxXml is loaded dynamically after the application is already running |
| 434 | // then the built-in module system won't pick this one up. Add it manually. |
| 435 | void wxXmlInitXmlModule() |
| 436 | { |
| 437 | wxModule* module = new wxXmlModule; |
| 438 | module->Init(); |
| 439 | wxModule::RegisterModule(module); |
| 440 | } |
| 441 | |