| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: filesys.cpp |
| 3 | // Purpose: wxFileSystem class - interface for opening files |
| 4 | // Author: Vaclav Slavik |
| 5 | // Copyright: (c) 1999 Vaclav Slavik |
| 6 | // Licence: wxWindows Licence |
| 7 | ///////////////////////////////////////////////////////////////////////////// |
| 8 | |
| 9 | #ifdef __GNUG__ |
| 10 | #pragma implementation |
| 11 | #endif |
| 12 | |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #ifdef __BORDLANDC__ |
| 16 | #pragma hdrstop |
| 17 | #endif |
| 18 | |
| 19 | #if !wxUSE_SOCKETS |
| 20 | #undef wxUSE_FS_INET |
| 21 | #define wxUSE_FS_INET 0 |
| 22 | #endif |
| 23 | |
| 24 | #if (wxUSE_FS_INET || wxUSE_FS_ZIP) && wxUSE_STREAMS |
| 25 | |
| 26 | #include "wx/wfstream.h" |
| 27 | #include "wx/module.h" |
| 28 | #include "wx/filesys.h" |
| 29 | |
| 30 | //-------------------------------------------------------------------------------- |
| 31 | // wxFileSystemHandler |
| 32 | //-------------------------------------------------------------------------------- |
| 33 | |
| 34 | IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject) |
| 35 | |
| 36 | wxMimeTypesManager *wxFileSystemHandler::m_MimeMng = NULL; |
| 37 | |
| 38 | void wxFileSystemHandler::CleanUpStatics() |
| 39 | { |
| 40 | if (m_MimeMng) delete m_MimeMng; |
| 41 | m_MimeMng = NULL; |
| 42 | } |
| 43 | |
| 44 | |
| 45 | wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location) |
| 46 | { |
| 47 | wxString ext = wxEmptyString, mime = wxEmptyString; |
| 48 | wxString loc = GetRightLocation(location); |
| 49 | char c; |
| 50 | int l = loc.Length(), l2; |
| 51 | wxFileType *ft; |
| 52 | |
| 53 | l2 = l; |
| 54 | for (int i = l-1; i >= 0; i--) { |
| 55 | c = loc[(unsigned int) i]; |
| 56 | if (c == wxT('#')) l2 = i + 1; |
| 57 | if (c == wxT('.')) {ext = loc.Right(l2-i-1); break;} |
| 58 | if ((c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) {return wxEmptyString;} |
| 59 | } |
| 60 | |
| 61 | if (m_MimeMng == NULL) { |
| 62 | m_MimeMng = new wxMimeTypesManager; |
| 63 | |
| 64 | static const wxFileTypeInfo fallbacks[] = |
| 65 | { |
| 66 | wxFileTypeInfo("image/jpeg", |
| 67 | "", |
| 68 | "", |
| 69 | "JPEG image (from fallback)", |
| 70 | "jpg", "jpeg", NULL), |
| 71 | wxFileTypeInfo("image/gif", |
| 72 | "", |
| 73 | "", |
| 74 | "GIF image (from fallback)", |
| 75 | "gif", NULL), |
| 76 | wxFileTypeInfo("image/png", |
| 77 | "", |
| 78 | "", |
| 79 | "PNG image (from fallback)", |
| 80 | "png", NULL), |
| 81 | wxFileTypeInfo("image/bmp", |
| 82 | "", |
| 83 | "", |
| 84 | "windows bitmap image (from fallback)", |
| 85 | "bmp", NULL), |
| 86 | wxFileTypeInfo("text/html", |
| 87 | "", |
| 88 | "", |
| 89 | "HTML document (from fallback)", |
| 90 | "htm", "html", NULL), |
| 91 | |
| 92 | // must terminate the table with this! |
| 93 | wxFileTypeInfo() |
| 94 | }; |
| 95 | |
| 96 | m_MimeMng -> AddFallbacks(fallbacks); |
| 97 | } |
| 98 | |
| 99 | ft = m_MimeMng -> GetFileTypeFromExtension(ext); |
| 100 | if (ft && (ft -> GetMimeType(&mime))) { |
| 101 | delete ft; |
| 102 | return mime; |
| 103 | } |
| 104 | else { |
| 105 | delete ft; |
| 106 | return wxEmptyString; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | |
| 111 | |
| 112 | wxString wxFileSystemHandler::GetProtocol(const wxString& location) const |
| 113 | { |
| 114 | wxString s = wxEmptyString; |
| 115 | int i, l = location.Length(); |
| 116 | bool fnd; |
| 117 | |
| 118 | fnd = FALSE; |
| 119 | for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) || (!fnd)); i--) { |
| 120 | if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = TRUE; |
| 121 | } |
| 122 | if (!fnd) return wxT("file"); |
| 123 | for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i]; |
| 124 | return s; |
| 125 | } |
| 126 | |
| 127 | |
| 128 | wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const |
| 129 | { |
| 130 | int i; |
| 131 | bool fnd; |
| 132 | |
| 133 | fnd = FALSE; |
| 134 | for (i = location.Length()-1; i >= 0; i--) { |
| 135 | if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = TRUE; |
| 136 | else if (fnd && (location[i] == wxT('#'))) return location.Left(i); |
| 137 | } |
| 138 | return wxEmptyString; |
| 139 | } |
| 140 | |
| 141 | wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const |
| 142 | { |
| 143 | int i, l = location.Length(); |
| 144 | int l2 = l + 1; |
| 145 | for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) || (i == 1) || (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;} |
| 146 | if (i == 0) return wxEmptyString; |
| 147 | else return location.Mid(i + 1, l2 - i - 2); |
| 148 | } |
| 149 | |
| 150 | wxString wxFileSystemHandler::GetAnchor(const wxString& location) const |
| 151 | { |
| 152 | char c; |
| 153 | int l = location.Length(); |
| 154 | |
| 155 | for (int i = l-1; i >= 0; i--) { |
| 156 | c = location[i]; |
| 157 | if (c == wxT('#')) return location.Right(l-i-1); |
| 158 | else if ((c == wxT('.')) || (c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) return wxEmptyString; |
| 159 | } |
| 160 | return wxEmptyString; |
| 161 | } |
| 162 | |
| 163 | |
| 164 | wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec), |
| 165 | int WXUNUSED(flags)) |
| 166 | { |
| 167 | return wxEmptyString; |
| 168 | } |
| 169 | |
| 170 | wxString wxFileSystemHandler::FindNext() |
| 171 | { |
| 172 | return wxEmptyString; |
| 173 | } |
| 174 | |
| 175 | //-------------------------------------------------------------------------------- |
| 176 | // wxLocalFSHandler |
| 177 | //-------------------------------------------------------------------------------- |
| 178 | |
| 179 | class wxLocalFSHandler : public wxFileSystemHandler |
| 180 | { |
| 181 | public: |
| 182 | virtual bool CanOpen(const wxString& location); |
| 183 | virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location); |
| 184 | virtual wxString FindFirst(const wxString& spec, int flags = 0); |
| 185 | virtual wxString FindNext(); |
| 186 | }; |
| 187 | |
| 188 | |
| 189 | bool wxLocalFSHandler::CanOpen(const wxString& location) |
| 190 | { |
| 191 | return GetProtocol(location) == wxT("file"); |
| 192 | } |
| 193 | |
| 194 | wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location) |
| 195 | { |
| 196 | wxString right = GetRightLocation(location); |
| 197 | if (wxFileExists(right)) |
| 198 | return new wxFSFile(new wxFileInputStream(right), |
| 199 | right, |
| 200 | GetMimeTypeFromExt(location), |
| 201 | GetAnchor(location)); |
| 202 | else return (wxFSFile*) NULL; |
| 203 | } |
| 204 | |
| 205 | wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags) |
| 206 | { |
| 207 | wxString right = GetRightLocation(spec); |
| 208 | return wxFindFirstFile(right, flags); |
| 209 | } |
| 210 | |
| 211 | wxString wxLocalFSHandler::FindNext() |
| 212 | { |
| 213 | return wxFindNextFile(); |
| 214 | } |
| 215 | |
| 216 | |
| 217 | |
| 218 | //----------------------------------------------------------------------------- |
| 219 | // wxFileSystem |
| 220 | //----------------------------------------------------------------------------- |
| 221 | |
| 222 | IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject) |
| 223 | |
| 224 | |
| 225 | wxList wxFileSystem::m_Handlers; |
| 226 | |
| 227 | |
| 228 | |
| 229 | void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir) |
| 230 | { |
| 231 | int i, pathpos = -1; |
| 232 | m_Path = location; |
| 233 | |
| 234 | for (i = m_Path.Length()-1; i >= 0; i--) |
| 235 | if (m_Path[(unsigned int) i] == wxT('\\')) m_Path.GetWritableChar(i) = wxT('/'); // wanna be windows-safe |
| 236 | |
| 237 | if (is_dir) |
| 238 | { |
| 239 | if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':')) |
| 240 | m_Path << wxT('/'); |
| 241 | } |
| 242 | |
| 243 | else |
| 244 | { |
| 245 | for (i = m_Path.Length()-1; i >= 0; i--) |
| 246 | { |
| 247 | if (m_Path[(unsigned int) i] == wxT('/')) |
| 248 | { |
| 249 | if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':'))) |
| 250 | { |
| 251 | i -= 2; |
| 252 | continue; |
| 253 | } |
| 254 | else |
| 255 | { |
| 256 | pathpos = i; |
| 257 | break; |
| 258 | } |
| 259 | } |
| 260 | else if (m_Path[(unsigned int) i] == wxT(':')) { |
| 261 | pathpos = i; |
| 262 | break; |
| 263 | } |
| 264 | } |
| 265 | if (pathpos == -1) |
| 266 | { |
| 267 | for (i = 0; i < (int) m_Path.Length(); i++) |
| 268 | { |
| 269 | if (m_Path[(unsigned int) i] == wxT(':')) |
| 270 | { |
| 271 | m_Path.Remove(i+1); |
| 272 | break; |
| 273 | } |
| 274 | } |
| 275 | if (i == (int) m_Path.Length()) |
| 276 | m_Path = wxEmptyString; |
| 277 | } |
| 278 | else |
| 279 | { |
| 280 | m_Path.Remove(pathpos+1); |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | |
| 286 | |
| 287 | wxFSFile* wxFileSystem::OpenFile(const wxString& location) |
| 288 | { |
| 289 | wxString loc = location; |
| 290 | int i, ln; |
| 291 | char meta; |
| 292 | wxFSFile *s = NULL; |
| 293 | wxNode *node; |
| 294 | |
| 295 | ln = loc.Length(); |
| 296 | meta = 0; |
| 297 | for (i = 0; i < ln; i++) |
| 298 | { |
| 299 | if (loc[(unsigned int) i] == wxT('\\')) loc.GetWritableChar(i) = wxT('/'); // wanna be windows-safe |
| 300 | if (!meta) |
| 301 | switch (loc[(unsigned int) i]) |
| 302 | { |
| 303 | case wxT('/') : case wxT(':') : case wxT('#') : meta = loc[(unsigned int) i]; |
| 304 | } |
| 305 | } |
| 306 | m_LastName = wxEmptyString; |
| 307 | |
| 308 | // try relative paths first : |
| 309 | if (meta != wxT(':')) |
| 310 | { |
| 311 | node = m_Handlers.GetFirst(); |
| 312 | while (node) |
| 313 | { |
| 314 | wxFileSystemHandler *h = (wxFileSystemHandler*) node -> GetData(); |
| 315 | if (h->CanOpen(m_Path + loc)) |
| 316 | { |
| 317 | s = h->OpenFile(*this, m_Path + loc); |
| 318 | if (s) { m_LastName = m_Path + loc; break; } |
| 319 | } |
| 320 | node = node->GetNext(); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | // if failed, try absolute paths : |
| 325 | if (s == NULL) |
| 326 | { |
| 327 | node = m_Handlers.GetFirst(); |
| 328 | while (node) |
| 329 | { |
| 330 | wxFileSystemHandler *h = (wxFileSystemHandler*) node->GetData(); |
| 331 | if (h->CanOpen(loc)) |
| 332 | { |
| 333 | s = h->OpenFile(*this, loc); |
| 334 | if (s) { m_LastName = loc; break; } |
| 335 | } |
| 336 | node = node->GetNext(); |
| 337 | } |
| 338 | } |
| 339 | return (s); |
| 340 | } |
| 341 | |
| 342 | |
| 343 | |
| 344 | wxString wxFileSystem::FindFirst(const wxString& spec, int flags) |
| 345 | { |
| 346 | wxNode *node; |
| 347 | wxString spec2(spec); |
| 348 | |
| 349 | m_FindFileHandler = NULL; |
| 350 | |
| 351 | for (int i = spec2.Length()-1; i >= 0; i--) |
| 352 | if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // wanna be windows-safe |
| 353 | |
| 354 | node = m_Handlers.GetFirst(); |
| 355 | while (node) |
| 356 | { |
| 357 | m_FindFileHandler = (wxFileSystemHandler*) node -> GetData(); |
| 358 | if (m_FindFileHandler -> CanOpen(m_Path + spec2)) |
| 359 | return m_FindFileHandler -> FindFirst(m_Path + spec2, flags); |
| 360 | node = node->GetNext(); |
| 361 | } |
| 362 | |
| 363 | node = m_Handlers.GetFirst(); |
| 364 | while (node) |
| 365 | { |
| 366 | m_FindFileHandler = (wxFileSystemHandler*) node -> GetData(); |
| 367 | if (m_FindFileHandler -> CanOpen(spec2)) |
| 368 | return m_FindFileHandler -> FindFirst(spec2, flags); |
| 369 | node = node->GetNext(); |
| 370 | } |
| 371 | |
| 372 | return wxEmptyString; |
| 373 | } |
| 374 | |
| 375 | |
| 376 | |
| 377 | wxString wxFileSystem::FindNext() |
| 378 | { |
| 379 | if (m_FindFileHandler == NULL) return wxEmptyString; |
| 380 | else return m_FindFileHandler -> FindNext(); |
| 381 | } |
| 382 | |
| 383 | |
| 384 | |
| 385 | void wxFileSystem::AddHandler(wxFileSystemHandler *handler) |
| 386 | { |
| 387 | m_Handlers.Append(handler); |
| 388 | } |
| 389 | |
| 390 | |
| 391 | void wxFileSystem::CleanUpHandlers() |
| 392 | { |
| 393 | m_Handlers.DeleteContents(TRUE); |
| 394 | m_Handlers.Clear(); |
| 395 | } |
| 396 | |
| 397 | |
| 398 | |
| 399 | |
| 400 | ///// Module: |
| 401 | |
| 402 | class wxFileSystemModule : public wxModule |
| 403 | { |
| 404 | DECLARE_DYNAMIC_CLASS(wxFileSystemModule) |
| 405 | |
| 406 | public: |
| 407 | virtual bool OnInit() |
| 408 | { |
| 409 | wxFileSystem::AddHandler(new wxLocalFSHandler); |
| 410 | return TRUE; |
| 411 | } |
| 412 | virtual void OnExit() |
| 413 | { |
| 414 | wxFileSystemHandler::CleanUpStatics(); |
| 415 | wxFileSystem::CleanUpHandlers(); |
| 416 | } |
| 417 | }; |
| 418 | |
| 419 | IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule) |
| 420 | |
| 421 | #endif |
| 422 | // (wxUSE_FS_INET || wxUSE_FS_ZIP) && wxUSE_STREAMS |
| 423 | |
| 424 | |
| 425 | |