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[wxWidgets.git] / include / wx / filefn.h
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/filefn.h
3 // Purpose: File- and directory-related functions
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 29/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) 1998 Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifndef _FILEFN_H_
13 #define _FILEFN_H_
14
15 #include "wx/list.h"
16 #include "wx/arrstr.h"
17
18 #ifdef __WXWINCE__
19 #include "wx/msw/wince/time.h"
20 #include "wx/msw/private.h"
21 #else
22 #include <time.h>
23 #endif
24
25 #ifdef __WXWINCE__
26 // Nothing
27 #elif !defined(__MWERKS__)
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #else
31 #ifdef __MACH__
32 #include <sys/types.h>
33 #include <utime.h>
34 #include <sys/stat.h>
35 #include <unistd.h>
36 #else
37 #include <stat.h>
38 #include <unistd.h>
39 #include <unix.h>
40 #endif
41 #endif
42
43 #ifdef __OS2__
44 // need to check for __OS2__ first since currently both
45 // __OS2__ and __UNIX__ are defined.
46 #include <process.h>
47 #include "wx/os2/private.h"
48 #ifdef __WATCOMC__
49 #include <direct.h>
50 #endif
51 #include <io.h>
52 #ifdef __EMX__
53 #include <unistd.h>
54 #endif
55 #elif defined(__UNIX__)
56 #include <unistd.h>
57 #include <dirent.h>
58 #endif
59
60 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
61 #if !defined( __GNUWIN32__ ) && !defined( __MWERKS__ ) && !defined(__SALFORDC__) && !defined(__WXWINCE__) && !defined(__CYGWIN__)
62 #include <direct.h>
63 #include <dos.h>
64 #include <io.h>
65 #endif // __WINDOWS__
66 #endif // native Win compiler
67
68 #if defined(__DOS__)
69 #ifdef __WATCOMC__
70 #include <direct.h>
71 #include <dos.h>
72 #include <io.h>
73 #endif
74 #ifdef __DJGPP__
75 #include <io.h>
76 #include <unistd.h>
77 #endif
78 #endif
79
80 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
81 // this (3.1 I believe) and how to test for it.
82 // If this works for Borland 4.0 as well, then no worries.
83 #include <dir.h>
84 #endif
85
86 #ifdef __SALFORDC__
87 #include <dir.h>
88 #include <unix.h>
89 #endif
90
91 #ifndef __WXWINCE__
92 #include <fcntl.h> // O_RDONLY &c
93 #endif
94 // ----------------------------------------------------------------------------
95 // constants
96 // ----------------------------------------------------------------------------
97
98 #ifdef __WXWINCE__
99 typedef long off_t;
100 #else
101 // define off_t
102 #if !defined(__WXMAC__) || defined(__UNIX__) || defined(__MACH__)
103 #include <sys/types.h>
104 #else
105 typedef long off_t;
106 #endif
107 #endif
108
109 #if (defined(__VISUALC__) && !defined(__WXWINCE__)) || ( defined(__MWERKS__) && defined( __INTEL__) )
110 typedef _off_t off_t;
111 #elif defined(__SYMANTEC__)
112 typedef long off_t;
113 #elif defined(__MWERKS__) && !defined(__INTEL__) && !defined(__MACH__)
114 typedef long off_t;
115 #endif
116
117 enum wxSeekMode
118 {
119 wxFromStart,
120 wxFromCurrent,
121 wxFromEnd
122 };
123
124 enum wxFileKind
125 {
126 wxFILE_KIND_UNKNOWN,
127 wxFILE_KIND_DISK, // a file supporting seeking to arbitrary offsets
128 wxFILE_KIND_TERMINAL, // a tty
129 wxFILE_KIND_PIPE // a pipe
130 };
131
132 // ----------------------------------------------------------------------------
133 // declare our versions of low level file functions: some compilers prepend
134 // underscores to the usual names, some also have Unicode versions of them
135 // ----------------------------------------------------------------------------
136
137 // Wrappers around Win32 api functions like CreateFile, ReadFile and such
138 // Implemented in filefnwce.cpp
139 #if defined( __WXWINCE__)
140 typedef __int64 wxFileOffset;
141 #define wxFileOffsetFmtSpec _("I64")
142 int wxOpen(const wxChar *filename, int oflag, int WXUNUSED(pmode));
143 int wxAccess(const wxChar *name, int WXUNUSED(how));
144 int wxClose(int fd);
145 int wxFsync(int WXUNUSED(fd));
146 int wxRead(int fd, void *buf, unsigned int count);
147 int wxWrite(int fd, const void *buf, unsigned int count);
148 int wxEof(int fd);
149 wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
150 #define wxLSeek wxSeek
151 wxFileOffset wxTell(int fd);
152
153 // always Unicode under WinCE
154 #define wxMkDir _wmkdir
155 #define wxRmDir _wrmdir
156 #define wxStat _wstat
157 #define wxStructStat struct _stat
158
159 // Microsoft compiler loves underscores, feed them to it
160 #elif defined( __VISUALC__ ) \
161 || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
162 || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
163 || ( defined(__DMC__) && defined(__WXMSW__) ) \
164 || ( defined(__WATCOMC__) && defined(__WXMSW__) )
165
166 // detect compilers which have support for huge files (currently only
167 // Digital Mars doesn't)
168 #ifndef __WXPALMOS__
169 #include "wx/msw/private.h"
170 #endif
171
172 #undef wxHAS_HUGE_FILES
173 #if defined(__MINGW32__)
174 #define wxHAS_HUGE_FILES 1
175 #elif defined(__MWERKS__)
176 #define wxHAS_HUGE_FILES 0
177 #elif defined(__DMC__)
178 #define wxHAS_HUGE_FILES 0
179 #elif ((_INTEGRAL_MAX_BITS >= 64) || defined(_LARGE_FILES))
180 #define wxHAS_HUGE_FILES 1
181 #else
182 #define wxHAS_HUGE_FILES 0
183 #endif
184
185 // functions
186 #if defined(__BORLANDC__) || defined(__WATCOMC__)
187 #define _tell tell
188 #endif
189
190 #if wxHAS_HUGE_FILES
191 typedef wxLongLong_t wxFileOffset;
192 #define wxFileOffsetFmtSpec wxLongLongFmtSpec
193 #else
194 typedef off_t wxFileOffset;
195 #endif
196
197 #define wxClose _close
198
199 #if defined(__MWERKS__)
200 #if __MSL__ >= 0x6000
201 #define wxRead(fd, buf, nCount) _read(fd, (void *)buf, nCount)
202 #define wxWrite(fd, buf, nCount) _write(fd, (void *)buf, nCount)
203 #else
204 #define wxRead(fd, buf, nCount)\
205 _read(fd, (const char *)buf, nCount)
206 #define wxWrite(fd, buf, nCount)\
207 _write(fd, (const char *)buf, nCount)
208 #endif
209 #else
210 #if defined(__DMC__) || defined(__WATCOMC__)
211 #define wxRead ::read
212 #define wxWrite ::write
213 #else
214 #define wxRead _read
215 #define wxWrite _write
216 #endif
217 #endif
218 #if wxHAS_HUGE_FILES
219 #define wxSeek _lseeki64
220 #define wxLseek _lseeki64
221 #define wxTell _telli64
222 #else
223 #define wxSeek _lseek
224 #define wxLseek _lseek
225 #define wxTell _tell
226 #endif
227 #define wxFsync _commit
228 #if defined(__WATCOMC__)
229 #define wxEof ::eof
230 #else
231 #define wxEof _eof
232 #endif
233
234 #if wxUSE_UNICODE
235 #if wxUSE_UNICODE_MSLU
236 #define wxOpen wxMSLU__wopen
237
238 #define wxAccess wxMSLU__waccess
239 #define wxMkDir wxMSLU__wmkdir
240 #define wxRmDir wxMSLU__wrmdir
241 #if wxHAS_HUGE_FILES
242 #define wxStat wxMSLU__wstati64
243 #else
244 #define wxStat wxMSLU__wstat
245 #endif
246 #else
247 #define wxOpen _wopen
248 #define wxAccess _waccess
249 #define wxMkDir _wmkdir
250 #define wxRmDir _wrmdir
251 #if wxHAS_HUGE_FILES
252 #define wxStat _wstati64
253 #else
254 #define wxStat _wstat
255 #endif
256 #endif
257 #else // !wxUSE_UNICODE
258 #ifdef __BORLANDC__
259 #define wxOpen open
260 #else
261 #define wxOpen _open
262 #endif
263 #define wxAccess _access
264 #define wxMkDir _mkdir
265 #ifdef __WATCOMC__
266 #define wxRmDir rmdir
267 #else
268 #define wxRmDir _rmdir
269 #endif
270 #if wxHAS_HUGE_FILES
271 #define wxStat _stati64
272 #else
273 #define wxStat _stat
274 #endif
275 #endif
276
277 // Types: Notice that Watcom is the only compiler to have a wide char
278 // version of struct stat as well as a wide char stat function variant.
279 // This was droped since OW 1.4 "for consistency across platforms".
280 #if wxHAS_HUGE_FILES
281 #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
282 #define wxStructStat struct _wstati64
283 #else
284 #define wxStructStat struct _stati64
285 #endif
286 #else
287 #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
288 #define wxStructStat struct _wstat
289 #else
290 #define wxStructStat struct _stat
291 #endif
292 #endif
293
294 // constants (unless already defined by the user code)
295 #if !defined(__BORLANDC__) && !defined(__WATCOMC__) && !defined(__WXPALMOS__)
296 #ifndef O_RDONLY
297 #define O_RDONLY _O_RDONLY
298 #define O_WRONLY _O_WRONLY
299 #define O_RDWR _O_RDWR
300 #define O_EXCL _O_EXCL
301 #define O_CREAT _O_CREAT
302 #define O_BINARY _O_BINARY
303 #endif
304
305 #ifndef S_IFMT
306 #define S_IFMT _S_IFMT
307 #define S_IFDIR _S_IFDIR
308 #define S_IFREG _S_IFREG
309 #endif
310 #endif
311
312 // It's a private define, undefine it so nobody gets tempted to use it
313 #undef wxHAS_HUGE_FILES
314 #else // Unix platforms using configure
315 typedef off_t wxFileOffset;
316 #ifdef _LARGE_FILES
317 #define wxFileOffsetFmtSpec wxLongLongFmtSpec
318 wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
319 BadFileSizeType );
320 #else
321 #define wxFileOffsetFmtSpec _T("")
322 #endif
323 // functions
324 #define wxClose close
325 #define wxRead ::read
326 #define wxWrite ::write
327 #define wxLseek lseek
328 #define wxSeek lseek
329 #define wxFsync fsync
330 #define wxEof eof
331
332 #define wxMkDir mkdir
333 #define wxRmDir rmdir
334
335 #define wxTell(fd) lseek(fd, 0, SEEK_CUR)
336
337 #define wxStructStat struct stat
338
339 #if wxUSE_UNICODE
340 #define wxNEED_WX_UNISTD_H
341 #if defined(__DMC__)
342 typedef unsigned long mode_t;
343 #endif
344 WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
345 WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
346 WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
347 #else
348 #define wxOpen open
349 #define wxStat stat
350 #define wxAccess access
351 #endif
352 #endif // platforms
353
354 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
355 //
356 // VisualAge C++ V4.0 cannot have any external linkage const decs
357 // in headers included by more than one primary source
358 //
359 extern const int wxInvalidOffset;
360 #else
361 const int wxInvalidOffset = -1;
362 #endif
363
364 // ----------------------------------------------------------------------------
365 // functions
366 // ----------------------------------------------------------------------------
367 WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
368
369 // does the path exist? (may have or not '/' or '\\' at the end)
370 WXDLLIMPEXP_BASE bool wxDirExists(const wxChar *pszPathName);
371
372 WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
373
374 // Get filename
375 WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
376 WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
377
378 // Get directory
379 WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
380
381 // wxString version
382 WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path);
383
384 WXDLLIMPEXP_BASE void wxDos2UnixFilename(wxChar *s);
385
386 WXDLLIMPEXP_BASE void wxUnix2DosFilename(wxChar *s);
387
388 // Strip the extension, in situ
389 WXDLLIMPEXP_BASE void wxStripExtension(wxChar *buffer);
390 WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer);
391
392 // Get a temporary filename
393 WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = (wxChar *) NULL);
394 WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf);
395
396 // Expand file name (~/ and ${OPENWINHOME}/ stuff)
397 WXDLLIMPEXP_BASE wxChar* wxExpandPath(wxChar *dest, const wxChar *path);
398 WXDLLIMPEXP_BASE bool wxExpandPath(wxString& dest, const wxChar *path);
399
400 // Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
401 // and make (if under the home tree) relative to home
402 // [caller must copy-- volatile]
403 WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
404 const wxString& envname = wxEmptyString,
405 const wxString& user = wxEmptyString);
406
407 // Destructive removal of /./ and /../ stuff
408 WXDLLIMPEXP_BASE wxChar* wxRealPath(wxChar *path);
409
410 // Allocate a copy of the full absolute path
411 WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path);
412
413 // Get first file name matching given wild card.
414 // Flags are reserved for future use.
415 #define wxFILE 1
416 #define wxDIR 2
417 WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxChar *spec, int flags = wxFILE);
418 WXDLLIMPEXP_BASE wxString wxFindNextFile();
419
420 // Does the pattern contain wildcards?
421 WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
422
423 // Does the pattern match the text (usually a filename)?
424 // If dot_special is true, doesn't match * against . (eliminating
425 // `hidden' dot files)
426 WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern, const wxString& text, bool dot_special = true);
427
428 // Concatenate two files to form third
429 WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
430
431 // Copy file1 to file2
432 WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
433 bool overwrite = true);
434
435 // Remove file
436 WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
437
438 // Rename file
439 WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite = true);
440
441 // Get current working directory.
442 #if WXWIN_COMPATIBILITY_2_6
443 // If buf is NULL, allocates space using new, else
444 // copies into buf.
445 // IMPORTANT NOTE getcwd is know not to work under some releases
446 // of Win32s 1.3, according to MS release notes!
447 wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000) );
448 // new and preferred version of wxGetWorkingDirectory
449 // NB: can't have the same name because of overloading ambiguity
450 #endif // WXWIN_COMPATIBILITY_2_6
451 WXDLLIMPEXP_BASE wxString wxGetCwd();
452
453 // Set working directory
454 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
455
456 // Make directory
457 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);
458
459 // Remove directory. Flags reserved for future use.
460 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
461
462 // Return the type of an open file
463 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
464 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
465
466 #if WXWIN_COMPATIBILITY_2_6
467 // compatibility defines, don't use in new code
468 wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
469 inline bool wxPathExists(const wxChar *pszPathName)
470 {
471 return wxDirExists(pszPathName);
472 }
473 #endif //WXWIN_COMPATIBILITY_2_6
474
475 // ----------------------------------------------------------------------------
476 // separators in file names
477 // ----------------------------------------------------------------------------
478
479 // between file name and extension
480 #define wxFILE_SEP_EXT wxT('.')
481
482 // between drive/volume name and the path
483 #define wxFILE_SEP_DSK wxT(':')
484
485 // between the path components
486 #define wxFILE_SEP_PATH_DOS wxT('\\')
487 #define wxFILE_SEP_PATH_UNIX wxT('/')
488 #define wxFILE_SEP_PATH_MAC wxT(':')
489 #define wxFILE_SEP_PATH_VMS wxT('.') // VMS also uses '[' and ']'
490
491 // separator in the path list (as in PATH environment variable)
492 // there is no PATH variable in Classic Mac OS so just use the
493 // semicolon (it must be different from the file name separator)
494 // NB: these are strings and not characters on purpose!
495 #define wxPATH_SEP_DOS wxT(";")
496 #define wxPATH_SEP_UNIX wxT(":")
497 #define wxPATH_SEP_MAC wxT(";")
498
499 // platform independent versions
500 #if defined(__UNIX__) && !defined(__OS2__)
501 // CYGWIN also uses UNIX settings
502 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_UNIX
503 #define wxPATH_SEP wxPATH_SEP_UNIX
504 #elif defined(__MAC__)
505 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_MAC
506 #define wxPATH_SEP wxPATH_SEP_MAC
507 #else // Windows and OS/2
508 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_DOS
509 #define wxPATH_SEP wxPATH_SEP_DOS
510 #endif // Unix/Windows
511
512 // this is useful for wxString::IsSameAs(): to compare two file names use
513 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
514 #if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
515 #define wxARE_FILENAMES_CASE_SENSITIVE true
516 #else // Windows, Mac OS and OS/2
517 #define wxARE_FILENAMES_CASE_SENSITIVE false
518 #endif // Unix/Windows
519
520 // is the char a path separator?
521 inline bool wxIsPathSeparator(wxChar c)
522 {
523 // under DOS/Windows we should understand both Unix and DOS file separators
524 #if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
525 return c == wxFILE_SEP_PATH;
526 #else
527 return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
528 #endif
529 }
530
531 // does the string ends with path separator?
532 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);
533
534 // split the full path into path (including drive for DOS), name and extension
535 // (understands both '/' and '\\')
536 WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
537 wxString *pstrPath,
538 wxString *pstrName,
539 wxString *pstrExt);
540
541 // find a file in a list of directories, returns false if not found
542 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);
543
544 // Get the OS directory if appropriate (such as the Windows directory).
545 // On non-Windows platform, probably just return the empty string.
546 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
547
548 // Get file modification time
549 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
550
551 // Parses the wildCard, returning the number of filters.
552 // Returns 0 if none or if there's a problem,
553 // The arrays will contain an equal number of items found before the error.
554 // wildCard is in the form:
555 // "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
556 WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
557
558 // ----------------------------------------------------------------------------
559 // classes
560 // ----------------------------------------------------------------------------
561
562 #ifdef __UNIX__
563
564 // set umask to the given value in ctor and reset it to the old one in dtor
565 class WXDLLIMPEXP_BASE wxUmaskChanger
566 {
567 public:
568 // change the umask to the given one if it is not -1: this allows to write
569 // the same code whether you really want to change umask or not, as is in
570 // wxFileConfig::Flush() for example
571 wxUmaskChanger(int umaskNew)
572 {
573 m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
574 }
575
576 ~wxUmaskChanger()
577 {
578 if ( m_umaskOld != -1 )
579 umask((mode_t)m_umaskOld);
580 }
581
582 private:
583 int m_umaskOld;
584 };
585
586 // this macro expands to an "anonymous" wxUmaskChanger object under Unix and
587 // nothing elsewhere
588 #define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
589
590 #else // !__UNIX__
591
592 #define wxCHANGE_UMASK(m)
593
594 #endif // __UNIX__/!__UNIX__
595
596
597 // Path searching
598 class WXDLLIMPEXP_BASE wxPathList : public wxArrayString
599 {
600 public:
601 wxPathList() {}
602 wxPathList(const wxArrayString &arr)
603 { Add(arr); }
604
605 // Adds all paths in environment variable
606 void AddEnvList(const wxString& envVariable);
607
608 // Adds given path to this list
609 void Add(const wxString& path);
610 void Add(const wxArrayString &paths);
611
612 // Find the first full path for which the file exists
613 wxString FindValidPath(const wxString& filename) const;
614
615 // Find the first full path for which the file exists; ensure it's an
616 // absolute path that gets returned.
617 wxString FindAbsoluteValidPath(const wxString& filename) const;
618
619 // Given full path and filename, add path to list
620 void EnsureFileAccessible(const wxString& path);
621
622 // Returns true if the path is in the list
623 wxDEPRECATED( bool Member(const wxString& path) const );
624 };
625
626 #endif // _WX_FILEFN_H_
wxWidgets (Impactor)