| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: filesys.cpp |
| 3 | // Purpose: wxFileSystem class - interface for opening files |
| 4 | // Author: Vaclav Slavik |
| 5 | // Copyright: (c) 1999 Vaclav Slavik |
| 6 | // CVS-ID: $Id$ |
| 7 | // Licence: wxWindows Licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #ifdef __GNUG__ |
| 11 | #pragma implementation |
| 12 | #endif |
| 13 | |
| 14 | #include "wx/wxprec.h" |
| 15 | |
| 16 | #ifdef __BORDLANDC__ |
| 17 | #pragma hdrstop |
| 18 | #endif |
| 19 | |
| 20 | |
| 21 | #if wxUSE_FILESYSTEM |
| 22 | |
| 23 | #include "wx/wfstream.h" |
| 24 | #include "wx/module.h" |
| 25 | #include "wx/filesys.h" |
| 26 | #include "wx/mimetype.h" |
| 27 | #include "wx/filename.h" |
| 28 | |
| 29 | |
| 30 | |
| 31 | //-------------------------------------------------------------------------------- |
| 32 | // wxFileSystemHandler |
| 33 | //-------------------------------------------------------------------------------- |
| 34 | |
| 35 | IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject) |
| 36 | |
| 37 | |
| 38 | static wxFileTypeInfo *gs_FSMimeFallbacks = NULL; |
| 39 | |
| 40 | wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location) |
| 41 | { |
| 42 | wxString ext = wxEmptyString, mime = wxEmptyString; |
| 43 | wxString loc = GetRightLocation(location); |
| 44 | char c; |
| 45 | int l = loc.Length(), l2; |
| 46 | wxFileType *ft; |
| 47 | |
| 48 | l2 = l; |
| 49 | for (int i = l-1; i >= 0; i--) { |
| 50 | c = loc[(unsigned int) i]; |
| 51 | if (c == wxT('#')) l2 = i + 1; |
| 52 | if (c == wxT('.')) {ext = loc.Right(l2-i-1); break;} |
| 53 | if ((c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) {return wxEmptyString;} |
| 54 | } |
| 55 | |
| 56 | static bool s_MinimalMimeEnsured = FALSE; |
| 57 | if (!s_MinimalMimeEnsured) { |
| 58 | wxTheMimeTypesManager -> AddFallbacks(gs_FSMimeFallbacks); |
| 59 | s_MinimalMimeEnsured = TRUE; |
| 60 | } |
| 61 | |
| 62 | ft = wxTheMimeTypesManager -> GetFileTypeFromExtension(ext); |
| 63 | if ( !ft || !ft -> GetMimeType(&mime) ) { |
| 64 | mime = wxEmptyString; |
| 65 | } |
| 66 | |
| 67 | delete ft; |
| 68 | |
| 69 | return mime; |
| 70 | } |
| 71 | |
| 72 | |
| 73 | |
| 74 | wxString wxFileSystemHandler::GetProtocol(const wxString& location) const |
| 75 | { |
| 76 | wxString s = wxEmptyString; |
| 77 | int i, l = location.Length(); |
| 78 | bool fnd; |
| 79 | |
| 80 | fnd = FALSE; |
| 81 | for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) || (!fnd)); i--) { |
| 82 | if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = TRUE; |
| 83 | } |
| 84 | if (!fnd) return wxT("file"); |
| 85 | for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i]; |
| 86 | return s; |
| 87 | } |
| 88 | |
| 89 | |
| 90 | wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const |
| 91 | { |
| 92 | int i; |
| 93 | bool fnd; |
| 94 | |
| 95 | fnd = FALSE; |
| 96 | for (i = location.Length()-1; i >= 0; i--) { |
| 97 | if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = TRUE; |
| 98 | else if (fnd && (location[i] == wxT('#'))) return location.Left(i); |
| 99 | } |
| 100 | return wxEmptyString; |
| 101 | } |
| 102 | |
| 103 | wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const |
| 104 | { |
| 105 | int i, l = location.Length(); |
| 106 | int l2 = l + 1; |
| 107 | for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) || (i == 1) || (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;} |
| 108 | if (i == 0) return wxEmptyString; |
| 109 | else return location.Mid(i + 1, l2 - i - 2); |
| 110 | } |
| 111 | |
| 112 | wxString wxFileSystemHandler::GetAnchor(const wxString& location) const |
| 113 | { |
| 114 | char c; |
| 115 | int l = location.Length(); |
| 116 | |
| 117 | for (int i = l-1; i >= 0; i--) { |
| 118 | c = location[i]; |
| 119 | if (c == wxT('#')) return location.Right(l-i-1); |
| 120 | else if ((c == wxT('.')) || (c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) return wxEmptyString; |
| 121 | } |
| 122 | return wxEmptyString; |
| 123 | } |
| 124 | |
| 125 | |
| 126 | wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec), |
| 127 | int WXUNUSED(flags)) |
| 128 | { |
| 129 | return wxEmptyString; |
| 130 | } |
| 131 | |
| 132 | wxString wxFileSystemHandler::FindNext() |
| 133 | { |
| 134 | return wxEmptyString; |
| 135 | } |
| 136 | |
| 137 | //-------------------------------------------------------------------------------- |
| 138 | // wxLocalFSHandler |
| 139 | //-------------------------------------------------------------------------------- |
| 140 | |
| 141 | |
| 142 | wxString wxLocalFSHandler::ms_root; |
| 143 | |
| 144 | bool wxLocalFSHandler::CanOpen(const wxString& location) |
| 145 | { |
| 146 | return GetProtocol(location) == wxT("file"); |
| 147 | } |
| 148 | |
| 149 | wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location) |
| 150 | { |
| 151 | // location has Unix path separators |
| 152 | wxString right = ms_root + GetRightLocation(location); |
| 153 | wxFileName fn(right, wxPATH_UNIX); |
| 154 | |
| 155 | if (!wxFileExists(fn.GetFullPath())) |
| 156 | return (wxFSFile*) NULL; |
| 157 | |
| 158 | return new wxFSFile(new wxFileInputStream(fn.GetFullPath()), |
| 159 | right, |
| 160 | GetMimeTypeFromExt(location), |
| 161 | GetAnchor(location), |
| 162 | wxDateTime(wxFileModificationTime(fn.GetFullPath()))); |
| 163 | |
| 164 | } |
| 165 | |
| 166 | wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags) |
| 167 | { |
| 168 | wxString right = ms_root + GetRightLocation(spec); |
| 169 | return wxFindFirstFile(right, flags); |
| 170 | } |
| 171 | |
| 172 | wxString wxLocalFSHandler::FindNext() |
| 173 | { |
| 174 | return wxFindNextFile(); |
| 175 | } |
| 176 | |
| 177 | |
| 178 | |
| 179 | //----------------------------------------------------------------------------- |
| 180 | // wxFileSystem |
| 181 | //----------------------------------------------------------------------------- |
| 182 | |
| 183 | IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject) |
| 184 | |
| 185 | |
| 186 | wxList wxFileSystem::m_Handlers; |
| 187 | |
| 188 | |
| 189 | static wxString MakeCorrectPath(const wxString& path) |
| 190 | { |
| 191 | wxString p(path); |
| 192 | wxString r; |
| 193 | int i, j, cnt; |
| 194 | |
| 195 | cnt = p.Length(); |
| 196 | for (i = 0; i < cnt; i++) |
| 197 | if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe |
| 198 | |
| 199 | if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; } |
| 200 | |
| 201 | if (cnt < 3) return p; |
| 202 | |
| 203 | r << p.GetChar(0) << p.GetChar(1); |
| 204 | |
| 205 | // skip trailing ../.., if any |
| 206 | for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') || p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i); |
| 207 | |
| 208 | // remove back references: translate dir1/../dir2 to dir2 |
| 209 | for (; i < cnt; i++) |
| 210 | { |
| 211 | r << p.GetChar(i); |
| 212 | if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.')) |
| 213 | { |
| 214 | for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {} |
| 215 | if (j >= 0 && r.GetChar(j) != wxT(':')) |
| 216 | { |
| 217 | for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {} |
| 218 | r.Remove(j + 1); |
| 219 | } |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | for (; i < cnt; i++) r << p.GetChar(i); |
| 224 | |
| 225 | return r; |
| 226 | } |
| 227 | |
| 228 | |
| 229 | void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir) |
| 230 | { |
| 231 | int i, pathpos = -1; |
| 232 | |
| 233 | m_Path = MakeCorrectPath(location); |
| 234 | |
| 235 | if (is_dir) |
| 236 | { |
| 237 | if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':')) |
| 238 | m_Path << wxT('/'); |
| 239 | } |
| 240 | |
| 241 | else |
| 242 | { |
| 243 | for (i = m_Path.Length()-1; i >= 0; i--) |
| 244 | { |
| 245 | if (m_Path[(unsigned int) i] == wxT('/')) |
| 246 | { |
| 247 | if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':'))) |
| 248 | { |
| 249 | i -= 2; |
| 250 | continue; |
| 251 | } |
| 252 | else |
| 253 | { |
| 254 | pathpos = i; |
| 255 | break; |
| 256 | } |
| 257 | } |
| 258 | else if (m_Path[(unsigned int) i] == wxT(':')) { |
| 259 | pathpos = i; |
| 260 | break; |
| 261 | } |
| 262 | } |
| 263 | if (pathpos == -1) |
| 264 | { |
| 265 | for (i = 0; i < (int) m_Path.Length(); i++) |
| 266 | { |
| 267 | if (m_Path[(unsigned int) i] == wxT(':')) |
| 268 | { |
| 269 | m_Path.Remove(i+1); |
| 270 | break; |
| 271 | } |
| 272 | } |
| 273 | if (i == (int) m_Path.Length()) |
| 274 | m_Path = wxEmptyString; |
| 275 | } |
| 276 | else |
| 277 | { |
| 278 | m_Path.Remove(pathpos+1); |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | |
| 284 | |
| 285 | wxFSFile* wxFileSystem::OpenFile(const wxString& location) |
| 286 | { |
| 287 | wxString loc = MakeCorrectPath(location); |
| 288 | unsigned i, ln; |
| 289 | char meta; |
| 290 | wxFSFile *s = NULL; |
| 291 | wxNode *node; |
| 292 | |
| 293 | ln = loc.Length(); |
| 294 | meta = 0; |
| 295 | for (i = 0; i < ln; i++) |
| 296 | { |
| 297 | switch (loc[i]) |
| 298 | { |
| 299 | case wxT('/') : case wxT(':') : case wxT('#') : |
| 300 | meta = loc[i]; |
| 301 | break; |
| 302 | } |
| 303 | if (meta != 0) break; |
| 304 | } |
| 305 | m_LastName = wxEmptyString; |
| 306 | |
| 307 | // try relative paths first : |
| 308 | if (meta != wxT(':')) |
| 309 | { |
| 310 | node = m_Handlers.GetFirst(); |
| 311 | while (node) |
| 312 | { |
| 313 | wxFileSystemHandler *h = (wxFileSystemHandler*) node -> GetData(); |
| 314 | if (h->CanOpen(m_Path + loc)) |
| 315 | { |
| 316 | s = h->OpenFile(*this, m_Path + loc); |
| 317 | if (s) { m_LastName = m_Path + loc; break; } |
| 318 | } |
| 319 | node = node->GetNext(); |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | // if failed, try absolute paths : |
| 324 | if (s == NULL) |
| 325 | { |
| 326 | node = m_Handlers.GetFirst(); |
| 327 | while (node) |
| 328 | { |
| 329 | wxFileSystemHandler *h = (wxFileSystemHandler*) node->GetData(); |
| 330 | if (h->CanOpen(loc)) |
| 331 | { |
| 332 | s = h->OpenFile(*this, loc); |
| 333 | if (s) { m_LastName = loc; break; } |
| 334 | } |
| 335 | node = node->GetNext(); |
| 336 | } |
| 337 | } |
| 338 | return (s); |
| 339 | } |
| 340 | |
| 341 | |
| 342 | |
| 343 | wxString wxFileSystem::FindFirst(const wxString& spec, int flags) |
| 344 | { |
| 345 | wxNode *node; |
| 346 | wxString spec2(spec); |
| 347 | |
| 348 | m_FindFileHandler = NULL; |
| 349 | |
| 350 | for (int i = spec2.Length()-1; i >= 0; i--) |
| 351 | if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe |
| 352 | |
| 353 | node = m_Handlers.GetFirst(); |
| 354 | while (node) |
| 355 | { |
| 356 | m_FindFileHandler = (wxFileSystemHandler*) node -> GetData(); |
| 357 | if (m_FindFileHandler -> CanOpen(m_Path + spec2)) |
| 358 | return m_FindFileHandler -> FindFirst(m_Path + spec2, flags); |
| 359 | node = node->GetNext(); |
| 360 | } |
| 361 | |
| 362 | node = m_Handlers.GetFirst(); |
| 363 | while (node) |
| 364 | { |
| 365 | m_FindFileHandler = (wxFileSystemHandler*) node -> GetData(); |
| 366 | if (m_FindFileHandler -> CanOpen(spec2)) |
| 367 | return m_FindFileHandler -> FindFirst(spec2, flags); |
| 368 | node = node->GetNext(); |
| 369 | } |
| 370 | |
| 371 | return wxEmptyString; |
| 372 | } |
| 373 | |
| 374 | |
| 375 | |
| 376 | wxString wxFileSystem::FindNext() |
| 377 | { |
| 378 | if (m_FindFileHandler == NULL) return wxEmptyString; |
| 379 | else return m_FindFileHandler -> FindNext(); |
| 380 | } |
| 381 | |
| 382 | |
| 383 | |
| 384 | void wxFileSystem::AddHandler(wxFileSystemHandler *handler) |
| 385 | { |
| 386 | m_Handlers.Append(handler); |
| 387 | } |
| 388 | |
| 389 | |
| 390 | void wxFileSystem::CleanUpHandlers() |
| 391 | { |
| 392 | m_Handlers.DeleteContents(TRUE); |
| 393 | m_Handlers.Clear(); |
| 394 | } |
| 395 | |
| 396 | |
| 397 | |
| 398 | |
| 399 | ///// Module: |
| 400 | |
| 401 | class wxFileSystemModule : public wxModule |
| 402 | { |
| 403 | DECLARE_DYNAMIC_CLASS(wxFileSystemModule) |
| 404 | |
| 405 | public: |
| 406 | virtual bool OnInit() |
| 407 | { |
| 408 | wxFileSystem::AddHandler(new wxLocalFSHandler); |
| 409 | |
| 410 | gs_FSMimeFallbacks = new wxFileTypeInfo[6]; |
| 411 | gs_FSMimeFallbacks[0] = |
| 412 | wxFileTypeInfo("image/jpeg", |
| 413 | "", |
| 414 | "", |
| 415 | "JPEG image (from fallback)", |
| 416 | "jpg", "jpeg", NULL); |
| 417 | gs_FSMimeFallbacks[1] = |
| 418 | wxFileTypeInfo("image/gif", |
| 419 | "", |
| 420 | "", |
| 421 | "GIF image (from fallback)", |
| 422 | "gif", NULL); |
| 423 | gs_FSMimeFallbacks[2] = |
| 424 | wxFileTypeInfo("image/png", |
| 425 | "", |
| 426 | "", |
| 427 | "PNG image (from fallback)", |
| 428 | "png", NULL); |
| 429 | gs_FSMimeFallbacks[3] = |
| 430 | wxFileTypeInfo("image/bmp", |
| 431 | "", |
| 432 | "", |
| 433 | "windows bitmap image (from fallback)", |
| 434 | "bmp", NULL); |
| 435 | gs_FSMimeFallbacks[4] = |
| 436 | wxFileTypeInfo("text/html", |
| 437 | "", |
| 438 | "", |
| 439 | "HTML document (from fallback)", |
| 440 | "htm", "html", NULL); |
| 441 | gs_FSMimeFallbacks[5] = |
| 442 | // must terminate the table with this! |
| 443 | wxFileTypeInfo(); |
| 444 | |
| 445 | return TRUE; |
| 446 | } |
| 447 | virtual void OnExit() |
| 448 | { |
| 449 | delete [] gs_FSMimeFallbacks; |
| 450 | wxFileSystem::CleanUpHandlers(); |
| 451 | } |
| 452 | }; |
| 453 | |
| 454 | IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule) |
| 455 | |
| 456 | #endif |
| 457 | // wxUSE_FILESYSTEM |
| 458 | |
| 459 | |
| 460 | |