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