| 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 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 11 | #pragma implementation "filesys.h" |
| 12 | #endif |
| 13 | |
| 14 | #include "wx/wxprec.h" |
| 15 | |
| 16 | #ifdef __BORLANDC__ |
| 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 | #include "wx/log.h" |
| 29 | |
| 30 | |
| 31 | //-------------------------------------------------------------------------------- |
| 32 | // wxFileSystemHandler |
| 33 | //-------------------------------------------------------------------------------- |
| 34 | |
| 35 | IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject) |
| 36 | |
| 37 | |
| 38 | wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location) |
| 39 | { |
| 40 | wxString ext, mime; |
| 41 | wxString loc = GetRightLocation(location); |
| 42 | wxChar c; |
| 43 | int l = loc.Length(), l2; |
| 44 | |
| 45 | l2 = l; |
| 46 | for (int i = l-1; i >= 0; i--) |
| 47 | { |
| 48 | c = loc[(unsigned int) i]; |
| 49 | if ( c == wxT('#') ) |
| 50 | l2 = i + 1; |
| 51 | if ( c == wxT('.') ) |
| 52 | { |
| 53 | ext = loc.Right(l2-i-1); |
| 54 | break; |
| 55 | } |
| 56 | if ( (c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':')) ) |
| 57 | return wxEmptyString; |
| 58 | } |
| 59 | |
| 60 | #if wxUSE_MIMETYPE |
| 61 | static bool s_MinimalMimeEnsured = false; |
| 62 | if (!s_MinimalMimeEnsured) |
| 63 | { |
| 64 | static const wxFileTypeInfo fallbacks[] = |
| 65 | { |
| 66 | wxFileTypeInfo(_T("image/jpeg"), |
| 67 | wxEmptyString, |
| 68 | wxEmptyString, |
| 69 | _T("JPEG image (from fallback)"), |
| 70 | _T("jpg"), _T("jpeg"), _T("JPG"), _T("JPEG"), NULL), |
| 71 | wxFileTypeInfo(_T("image/gif"), |
| 72 | wxEmptyString, |
| 73 | wxEmptyString, |
| 74 | _T("GIF image (from fallback)"), |
| 75 | _T("gif"), _T("GIF"), NULL), |
| 76 | wxFileTypeInfo(_T("image/png"), |
| 77 | wxEmptyString, |
| 78 | wxEmptyString, |
| 79 | _T("PNG image (from fallback)"), |
| 80 | _T("png"), _T("PNG"), NULL), |
| 81 | wxFileTypeInfo(_T("image/bmp"), |
| 82 | wxEmptyString, |
| 83 | wxEmptyString, |
| 84 | _T("windows bitmap image (from fallback)"), |
| 85 | _T("bmp"), _T("BMP"), NULL), |
| 86 | wxFileTypeInfo(_T("text/html"), |
| 87 | wxEmptyString, |
| 88 | wxEmptyString, |
| 89 | _T("HTML document (from fallback)"), |
| 90 | _T("htm"), _T("html"), _T("HTM"), _T("HTML"), NULL), |
| 91 | // must terminate the table with this! |
| 92 | wxFileTypeInfo() |
| 93 | }; |
| 94 | wxTheMimeTypesManager->AddFallbacks(fallbacks); |
| 95 | s_MinimalMimeEnsured = true; |
| 96 | } |
| 97 | |
| 98 | wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(ext); |
| 99 | if ( !ft || !ft -> GetMimeType(&mime) ) |
| 100 | { |
| 101 | mime = wxEmptyString; |
| 102 | } |
| 103 | |
| 104 | delete ft; |
| 105 | |
| 106 | return mime; |
| 107 | #else |
| 108 | if ( ext.IsSameAs(wxT("htm"), false) || ext.IsSameAs(_T("html"), false) ) |
| 109 | return wxT("text/html"); |
| 110 | if ( ext.IsSameAs(wxT("jpg"), false) || ext.IsSameAs(_T("jpeg"), false) ) |
| 111 | return wxT("image/jpeg"); |
| 112 | if ( ext.IsSameAs(wxT("gif"), false) ) |
| 113 | return wxT("image/gif"); |
| 114 | if ( ext.IsSameAs(wxT("png"), false) ) |
| 115 | return wxT("image/png"); |
| 116 | if ( ext.IsSameAs(wxT("bmp"), false) ) |
| 117 | return wxT("image/bmp"); |
| 118 | return wxEmptyString; |
| 119 | #endif |
| 120 | } |
| 121 | |
| 122 | |
| 123 | |
| 124 | wxString wxFileSystemHandler::GetProtocol(const wxString& location) const |
| 125 | { |
| 126 | wxString s = wxEmptyString; |
| 127 | int i, l = location.Length(); |
| 128 | bool fnd = false; |
| 129 | |
| 130 | for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) || (!fnd)); i--) { |
| 131 | if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = true; |
| 132 | } |
| 133 | if (!fnd) return wxT("file"); |
| 134 | for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i]; |
| 135 | return s; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const |
| 140 | { |
| 141 | int i; |
| 142 | bool fnd = false; |
| 143 | |
| 144 | for (i = location.Length()-1; i >= 0; i--) { |
| 145 | if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = true; |
| 146 | else if (fnd && (location[i] == wxT('#'))) return location.Left(i); |
| 147 | } |
| 148 | return wxEmptyString; |
| 149 | } |
| 150 | |
| 151 | wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const |
| 152 | { |
| 153 | int i, l = location.Length(); |
| 154 | int l2 = l + 1; |
| 155 | |
| 156 | for (i = l-1; |
| 157 | (i >= 0) && |
| 158 | ((location[i] != wxT(':')) || (i == 1) || (location[i-2] == wxT(':'))); |
| 159 | i--) |
| 160 | { |
| 161 | if (location[i] == wxT('#')) l2 = i + 1; |
| 162 | } |
| 163 | if (i == 0) return wxEmptyString; |
| 164 | else return location.Mid(i + 1, l2 - i - 2); |
| 165 | } |
| 166 | |
| 167 | wxString wxFileSystemHandler::GetAnchor(const wxString& location) const |
| 168 | { |
| 169 | wxChar c; |
| 170 | int l = location.Length(); |
| 171 | |
| 172 | for (int i = l-1; i >= 0; i--) { |
| 173 | c = location[i]; |
| 174 | if (c == wxT('#')) return location.Right(l-i-1); |
| 175 | else if ((c == wxT('.')) || (c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) return wxEmptyString; |
| 176 | } |
| 177 | return wxEmptyString; |
| 178 | } |
| 179 | |
| 180 | |
| 181 | wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec), |
| 182 | int WXUNUSED(flags)) |
| 183 | { |
| 184 | return wxEmptyString; |
| 185 | } |
| 186 | |
| 187 | wxString wxFileSystemHandler::FindNext() |
| 188 | { |
| 189 | return wxEmptyString; |
| 190 | } |
| 191 | |
| 192 | //-------------------------------------------------------------------------------- |
| 193 | // wxLocalFSHandler |
| 194 | //-------------------------------------------------------------------------------- |
| 195 | |
| 196 | |
| 197 | wxString wxLocalFSHandler::ms_root; |
| 198 | |
| 199 | bool wxLocalFSHandler::CanOpen(const wxString& location) |
| 200 | { |
| 201 | return GetProtocol(location) == wxT("file"); |
| 202 | } |
| 203 | |
| 204 | wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location) |
| 205 | { |
| 206 | // location has Unix path separators |
| 207 | wxString right = GetRightLocation(location); |
| 208 | wxFileName fn = wxFileSystem::URLToFileName(right); |
| 209 | wxString fullpath = ms_root + fn.GetFullPath(); |
| 210 | |
| 211 | if (!wxFileExists(fullpath)) |
| 212 | return (wxFSFile*) NULL; |
| 213 | |
| 214 | // we need to check whether we can really read from this file, otherwise |
| 215 | // wxFSFile is not going to work |
| 216 | wxFFileInputStream *is = new wxFFileInputStream(fullpath); |
| 217 | if ( !is->Ok() ) |
| 218 | { |
| 219 | delete is; |
| 220 | return (wxFSFile*) NULL; |
| 221 | } |
| 222 | |
| 223 | return new wxFSFile(is, |
| 224 | right, |
| 225 | GetMimeTypeFromExt(location), |
| 226 | GetAnchor(location) |
| 227 | #if wxUSE_DATETIME |
| 228 | ,wxDateTime(wxFileModificationTime(fullpath)) |
| 229 | #endif // wxUSE_DATETIME |
| 230 | ); |
| 231 | } |
| 232 | |
| 233 | wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags) |
| 234 | { |
| 235 | wxFileName fn = wxFileSystem::URLToFileName(GetRightLocation(spec)); |
| 236 | return wxFindFirstFile(ms_root + fn.GetFullPath(), flags); |
| 237 | } |
| 238 | |
| 239 | wxString wxLocalFSHandler::FindNext() |
| 240 | { |
| 241 | return wxFindNextFile(); |
| 242 | } |
| 243 | |
| 244 | |
| 245 | |
| 246 | //----------------------------------------------------------------------------- |
| 247 | // wxFileSystem |
| 248 | //----------------------------------------------------------------------------- |
| 249 | |
| 250 | IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject) |
| 251 | IMPLEMENT_ABSTRACT_CLASS(wxFSFile, wxObject) |
| 252 | |
| 253 | |
| 254 | wxList wxFileSystem::m_Handlers; |
| 255 | |
| 256 | |
| 257 | static wxString MakeCorrectPath(const wxString& path) |
| 258 | { |
| 259 | wxString p(path); |
| 260 | wxString r; |
| 261 | int i, j, cnt; |
| 262 | |
| 263 | cnt = p.Length(); |
| 264 | for (i = 0; i < cnt; i++) |
| 265 | if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe |
| 266 | |
| 267 | if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; } |
| 268 | |
| 269 | if (cnt < 3) return p; |
| 270 | |
| 271 | r << p.GetChar(0) << p.GetChar(1); |
| 272 | |
| 273 | // skip trailing ../.., if any |
| 274 | for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') || p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i); |
| 275 | |
| 276 | // remove back references: translate dir1/../dir2 to dir2 |
| 277 | for (; i < cnt; i++) |
| 278 | { |
| 279 | r << p.GetChar(i); |
| 280 | if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.')) |
| 281 | { |
| 282 | for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {} |
| 283 | if (j >= 0 && r.GetChar(j) != wxT(':')) |
| 284 | { |
| 285 | for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {} |
| 286 | r.Remove(j + 1); |
| 287 | } |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | for (; i < cnt; i++) r << p.GetChar(i); |
| 292 | |
| 293 | return r; |
| 294 | } |
| 295 | |
| 296 | |
| 297 | void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir) |
| 298 | { |
| 299 | int i, pathpos = -1; |
| 300 | |
| 301 | m_Path = MakeCorrectPath(location); |
| 302 | |
| 303 | if (is_dir) |
| 304 | { |
| 305 | if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':')) |
| 306 | m_Path << wxT('/'); |
| 307 | } |
| 308 | |
| 309 | else |
| 310 | { |
| 311 | for (i = m_Path.Length()-1; i >= 0; i--) |
| 312 | { |
| 313 | if (m_Path[(unsigned int) i] == wxT('/')) |
| 314 | { |
| 315 | if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':'))) |
| 316 | { |
| 317 | i -= 2; |
| 318 | continue; |
| 319 | } |
| 320 | else |
| 321 | { |
| 322 | pathpos = i; |
| 323 | break; |
| 324 | } |
| 325 | } |
| 326 | else if (m_Path[(unsigned int) i] == wxT(':')) { |
| 327 | pathpos = i; |
| 328 | break; |
| 329 | } |
| 330 | } |
| 331 | if (pathpos == -1) |
| 332 | { |
| 333 | for (i = 0; i < (int) m_Path.Length(); i++) |
| 334 | { |
| 335 | if (m_Path[(unsigned int) i] == wxT(':')) |
| 336 | { |
| 337 | m_Path.Remove(i+1); |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | if (i == (int) m_Path.Length()) |
| 342 | m_Path = wxEmptyString; |
| 343 | } |
| 344 | else |
| 345 | { |
| 346 | m_Path.Remove(pathpos+1); |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | |
| 352 | |
| 353 | wxFSFile* wxFileSystem::OpenFile(const wxString& location) |
| 354 | { |
| 355 | wxString loc = MakeCorrectPath(location); |
| 356 | unsigned i, ln; |
| 357 | wxChar meta; |
| 358 | wxFSFile *s = NULL; |
| 359 | wxList::compatibility_iterator node; |
| 360 | |
| 361 | ln = loc.Length(); |
| 362 | meta = 0; |
| 363 | for (i = 0; i < ln; i++) |
| 364 | { |
| 365 | switch (loc[i]) |
| 366 | { |
| 367 | case wxT('/') : case wxT(':') : case wxT('#') : |
| 368 | meta = loc[i]; |
| 369 | break; |
| 370 | } |
| 371 | if (meta != 0) break; |
| 372 | } |
| 373 | m_LastName = wxEmptyString; |
| 374 | |
| 375 | // try relative paths first : |
| 376 | if (meta != wxT(':')) |
| 377 | { |
| 378 | node = m_Handlers.GetFirst(); |
| 379 | while (node) |
| 380 | { |
| 381 | wxFileSystemHandler *h = (wxFileSystemHandler*) node -> GetData(); |
| 382 | if (h->CanOpen(m_Path + loc)) |
| 383 | { |
| 384 | s = h->OpenFile(*this, m_Path + loc); |
| 385 | if (s) { m_LastName = m_Path + loc; break; } |
| 386 | } |
| 387 | node = node->GetNext(); |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | // if failed, try absolute paths : |
| 392 | if (s == NULL) |
| 393 | { |
| 394 | node = m_Handlers.GetFirst(); |
| 395 | while (node) |
| 396 | { |
| 397 | wxFileSystemHandler *h = (wxFileSystemHandler*) node->GetData(); |
| 398 | if (h->CanOpen(loc)) |
| 399 | { |
| 400 | s = h->OpenFile(*this, loc); |
| 401 | if (s) { m_LastName = loc; break; } |
| 402 | } |
| 403 | node = node->GetNext(); |
| 404 | } |
| 405 | } |
| 406 | return (s); |
| 407 | } |
| 408 | |
| 409 | |
| 410 | |
| 411 | wxString wxFileSystem::FindFirst(const wxString& spec, int flags) |
| 412 | { |
| 413 | wxList::compatibility_iterator node; |
| 414 | wxString spec2(spec); |
| 415 | |
| 416 | m_FindFileHandler = NULL; |
| 417 | |
| 418 | for (int i = spec2.Length()-1; i >= 0; i--) |
| 419 | if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe |
| 420 | |
| 421 | node = m_Handlers.GetFirst(); |
| 422 | while (node) |
| 423 | { |
| 424 | m_FindFileHandler = (wxFileSystemHandler*) node -> GetData(); |
| 425 | if (m_FindFileHandler -> CanOpen(m_Path + spec2)) |
| 426 | return m_FindFileHandler -> FindFirst(m_Path + spec2, flags); |
| 427 | node = node->GetNext(); |
| 428 | } |
| 429 | |
| 430 | node = m_Handlers.GetFirst(); |
| 431 | while (node) |
| 432 | { |
| 433 | m_FindFileHandler = (wxFileSystemHandler*) node -> GetData(); |
| 434 | if (m_FindFileHandler -> CanOpen(spec2)) |
| 435 | return m_FindFileHandler -> FindFirst(spec2, flags); |
| 436 | node = node->GetNext(); |
| 437 | } |
| 438 | |
| 439 | return wxEmptyString; |
| 440 | } |
| 441 | |
| 442 | |
| 443 | |
| 444 | wxString wxFileSystem::FindNext() |
| 445 | { |
| 446 | if (m_FindFileHandler == NULL) return wxEmptyString; |
| 447 | else return m_FindFileHandler -> FindNext(); |
| 448 | } |
| 449 | |
| 450 | |
| 451 | |
| 452 | void wxFileSystem::AddHandler(wxFileSystemHandler *handler) |
| 453 | { |
| 454 | m_Handlers.Append(handler); |
| 455 | } |
| 456 | |
| 457 | |
| 458 | void wxFileSystem::CleanUpHandlers() |
| 459 | { |
| 460 | WX_CLEAR_LIST(wxList, m_Handlers); |
| 461 | } |
| 462 | |
| 463 | static const wxString g_unixPathString(wxT("/")); |
| 464 | static const wxString g_nativePathString(wxFILE_SEP_PATH); |
| 465 | |
| 466 | // Returns the native path for a file URL |
| 467 | wxFileName wxFileSystem::URLToFileName(const wxString& url) |
| 468 | { |
| 469 | wxString path = url; |
| 470 | |
| 471 | if ( path.Find(wxT("file://")) == 0 ) |
| 472 | { |
| 473 | path = path.Mid(7); |
| 474 | } |
| 475 | else if ( path.Find(wxT("file:")) == 0 ) |
| 476 | { |
| 477 | path = path.Mid(5); |
| 478 | } |
| 479 | // Remove preceding double slash on Mac Classic |
| 480 | #if defined(__WXMAC__) && !defined(__UNIX__) |
| 481 | else if ( path.Find(wxT("//")) == 0 ) |
| 482 | path = path.Mid(2); |
| 483 | #endif |
| 484 | |
| 485 | path.Replace(wxT("%25"), wxT("%")); |
| 486 | path.Replace(wxT("%3A"), wxT(":")); |
| 487 | |
| 488 | #ifdef __WXMSW__ |
| 489 | // file urls either start with a forward slash (local harddisk), |
| 490 | // otherwise they have a servername/sharename notation, |
| 491 | // which only exists on msw and corresponds to a unc |
| 492 | if ( path[0u] == wxT('/') && path [1u] != wxT('/')) |
| 493 | { |
| 494 | path = path.Mid(1); |
| 495 | } |
| 496 | else if ( (url.Find(wxT("file://")) == 0) && |
| 497 | (path.Find(wxT('/')) != wxNOT_FOUND) && |
| 498 | (path.Length() > 1) && (path[1u] != wxT(':')) ) |
| 499 | { |
| 500 | path = wxT("//") + path; |
| 501 | } |
| 502 | #endif |
| 503 | |
| 504 | path.Replace(g_unixPathString, g_nativePathString); |
| 505 | |
| 506 | return wxFileName(path, wxPATH_NATIVE); |
| 507 | } |
| 508 | |
| 509 | // Returns the file URL for a native path |
| 510 | wxString wxFileSystem::FileNameToURL(const wxFileName& filename) |
| 511 | { |
| 512 | wxFileName fn = filename; |
| 513 | fn.Normalize(wxPATH_NORM_DOTS | wxPATH_NORM_TILDE | wxPATH_NORM_ABSOLUTE); |
| 514 | wxString url = fn.GetFullPath(wxPATH_NATIVE); |
| 515 | |
| 516 | #ifndef __UNIX__ |
| 517 | // unc notation, wxMSW |
| 518 | if ( url.Find(wxT("\\\\")) == 0 ) |
| 519 | { |
| 520 | url = wxT("//") + url.Mid(2); |
| 521 | } |
| 522 | else |
| 523 | { |
| 524 | url = wxT("/") + url; |
| 525 | #ifdef __WXMAC__ |
| 526 | url = wxT("/") + url; |
| 527 | #endif |
| 528 | |
| 529 | } |
| 530 | #endif |
| 531 | |
| 532 | url.Replace(g_nativePathString, g_unixPathString); |
| 533 | url.Replace(wxT("%"), wxT("%25")); |
| 534 | url.Replace(wxT(":"), wxT("%3A")); |
| 535 | url = wxT("file:") + url; |
| 536 | return url; |
| 537 | } |
| 538 | |
| 539 | |
| 540 | ///// Module: |
| 541 | |
| 542 | class wxFileSystemModule : public wxModule |
| 543 | { |
| 544 | DECLARE_DYNAMIC_CLASS(wxFileSystemModule) |
| 545 | |
| 546 | public: |
| 547 | virtual bool OnInit() |
| 548 | { |
| 549 | wxFileSystem::AddHandler(new wxLocalFSHandler); |
| 550 | return true; |
| 551 | } |
| 552 | virtual void OnExit() |
| 553 | { |
| 554 | wxFileSystem::CleanUpHandlers(); |
| 555 | } |
| 556 | }; |
| 557 | |
| 558 | IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule) |
| 559 | |
| 560 | #endif |
| 561 | // wxUSE_FILESYSTEM |
| 562 | |
| 563 | |
| 564 | |