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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 enum wxFileKind
126 {
127 wxFILE_KIND_UNKNOWN,
128 wxFILE_KIND_DISK, // a file supporting seeking to arbitrary offsets
129 wxFILE_KIND_TERMINAL, // a tty
130 wxFILE_KIND_PIPE // a pipe
131 };
132
133 // ----------------------------------------------------------------------------
134 // declare our versions of low level file functions: some compilers prepend
135 // underscores to the usual names, some also have Unicode versions of them
136 // ----------------------------------------------------------------------------
137
138 // Wrappers around Win32 api functions like CreateFile, ReadFile and such
139 // Implemented in filefnwce.cpp
140 #if defined( __WXWINCE__)
141 typedef __int64 wxFileOffset;
142 #define wxFileOffsetFmtSpec _("I64")
143 int wxOpen(const wxChar *filename, int oflag, int WXUNUSED(pmode));
144 int wxAccess(const wxChar *name, int WXUNUSED(how));
145 int wxClose(int fd);
146 int wxFsync(int WXUNUSED(fd));
147 int wxRead(int fd, void *buf, unsigned int count);
148 int wxWrite(int fd, const void *buf, unsigned int count);
149 int wxEof(int fd);
150 wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
151 #define wxLSeek wxSeek
152 wxFileOffset wxTell(int fd);
153
154 // always Unicode under WinCE
155 #define wxMkDir _wmkdir
156 #define wxRmDir _wrmdir
157 #define wxStat _wstat
158 #define wxStructStat struct _stat
159
160 // Microsoft compiler loves underscores, feed them to it
161 #elif defined( __VISUALC__ ) \
162 || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
163 || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
164 || ( defined(__DMC__) && defined(__WXMSW__) ) \
165 || ( defined(__WATCOMC__) && defined(__WXMSW__) )
166
167 // detect compilers which have support for huge files (currently only
168 // Digital Mars doesn't)
169 #ifndef __WXPALMOS__
170 #include "wx/msw/private.h"
171 #endif
172
173 #undef wxHAS_HUGE_FILES
174 #if defined(__MINGW32__)
175 #define wxHAS_HUGE_FILES 1
176 #elif defined(__MWERKS__)
177 #define wxHAS_HUGE_FILES 0
178 #elif defined(__DMC__)
179 #define wxHAS_HUGE_FILES 0
180 #elif ((_INTEGRAL_MAX_BITS >= 64) || defined(_LARGE_FILES))
181 #define wxHAS_HUGE_FILES 1
182 #else
183 #define wxHAS_HUGE_FILES 0
184 #endif
185
186 // functions
187 #if defined(__BORLANDC__) || defined(__WATCOMC__)
188 #define _tell tell
189 #endif
190
191 #if wxHAS_HUGE_FILES
192 typedef wxLongLong_t wxFileOffset;
193 #define wxFileOffsetFmtSpec wxLongLongFmtSpec
194 #else
195 typedef off_t wxFileOffset;
196 #endif
197
198 #define wxClose _close
199
200 #if defined(__MWERKS__)
201 #if __MSL__ >= 0x6000
202 #define wxRead(fd, buf, nCount) _read(fd, (void *)buf, nCount)
203 #define wxWrite(fd, buf, nCount) _write(fd, (void *)buf, nCount)
204 #else
205 #define wxRead(fd, buf, nCount)\
206 _read(fd, (const char *)buf, nCount)
207 #define wxWrite(fd, buf, nCount)\
208 _write(fd, (const char *)buf, nCount)
209 #endif
210 #else
211 #if defined(__DMC__) || defined(__WATCOMC__)
212 #define wxRead ::read
213 #define wxWrite ::write
214 #else
215 #define wxRead _read
216 #define wxWrite _write
217 #endif
218 #endif
219 #if wxHAS_HUGE_FILES
220 #define wxSeek _lseeki64
221 #define wxLseek _lseeki64
222 #define wxTell _telli64
223 #else
224 #define wxSeek _lseek
225 #define wxLseek _lseek
226 #define wxTell _tell
227 #endif
228 #define wxFsync _commit
229 #if defined(__WATCOMC__)
230 #define wxEof ::eof
231 #else
232 #define wxEof _eof
233 #endif
234
235 #if wxUSE_UNICODE
236 #if wxUSE_UNICODE_MSLU
237 #define wxOpen wxMSLU__wopen
238
239 #define wxAccess wxMSLU__waccess
240 #define wxMkDir wxMSLU__wmkdir
241 #define wxRmDir wxMSLU__wrmdir
242 #if wxHAS_HUGE_FILES
243 #define wxStat wxMSLU__wstati64
244 #else
245 #define wxStat wxMSLU__wstat
246 #endif
247 #else
248 #define wxOpen _wopen
249 #define wxAccess _waccess
250 #define wxMkDir _wmkdir
251 #define wxRmDir _wrmdir
252 #if wxHAS_HUGE_FILES
253 #define wxStat _wstati64
254 #else
255 #define wxStat _wstat
256 #endif
257 #endif
258 #else // !wxUSE_UNICODE
259 #ifdef __BORLANDC__
260 #define wxOpen open
261 #else
262 #define wxOpen _open
263 #endif
264 #define wxAccess _access
265 #define wxMkDir _mkdir
266 #ifdef __WATCOMC__
267 #define wxRmDir rmdir
268 #else
269 #define wxRmDir _rmdir
270 #endif
271 #if wxHAS_HUGE_FILES
272 #define wxStat _stati64
273 #else
274 #define wxStat _stat
275 #endif
276 #endif
277
278 // types: notice that Watcom is the only compiler to have a wide char
279 // version of struct stat as well as a wide char stat function variant
280 #if wxHAS_HUGE_FILES
281 #if wxUSE_UNICODE && defined(__WATCOMC__)
282 #define wxStructStat struct _wstati64
283 #else
284 #define wxStructStat struct _stati64
285 #endif
286 #else
287 #if wxUSE_UNICODE && defined(__WATCOMC__)
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 commit
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);
440
441 // Get current working directory.
442 // If buf is NULL, allocates space using new, else
443 // copies into buf.
444 // IMPORTANT NOTE getcwd is know not to work under some releases
445 // of Win32s 1.3, according to MS release notes!
446 WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000);
447 // new and preferred version of wxGetWorkingDirectory
448 // NB: can't have the same name because of overloading ambiguity
449 WXDLLIMPEXP_BASE wxString wxGetCwd();
450
451 // Set working directory
452 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
453
454 // Make directory
455 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);
456
457 // Remove directory. Flags reserved for future use.
458 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
459
460 // Return the type of an open file
461 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
462 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
463
464 // compatibility defines, don't use in new code
465 // consider removal droping 2.4 compatibility
466 // #if WXWIN_COMPATIBILITY_2_4
467 wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
468 inline bool wxPathExists(const wxChar *pszPathName)
469 {
470 return wxDirExists(pszPathName);
471 }
472 // #endif //WXWIN_COMPATIBILITY_2_4
473
474 // ----------------------------------------------------------------------------
475 // separators in file names
476 // ----------------------------------------------------------------------------
477
478 // between file name and extension
479 #define wxFILE_SEP_EXT wxT('.')
480
481 // between drive/volume name and the path
482 #define wxFILE_SEP_DSK wxT(':')
483
484 // between the path components
485 #define wxFILE_SEP_PATH_DOS wxT('\\')
486 #define wxFILE_SEP_PATH_UNIX wxT('/')
487 #define wxFILE_SEP_PATH_MAC wxT(':')
488 #define wxFILE_SEP_PATH_VMS wxT('.') // VMS also uses '[' and ']'
489
490 // separator in the path list (as in PATH environment variable)
491 // there is no PATH variable in Classic Mac OS so just use the
492 // semicolon (it must be different from the file name separator)
493 // NB: these are strings and not characters on purpose!
494 #define wxPATH_SEP_DOS wxT(";")
495 #define wxPATH_SEP_UNIX wxT(":")
496 #define wxPATH_SEP_MAC wxT(";")
497
498 // platform independent versions
499 #if defined(__UNIX__) && !defined(__OS2__)
500 // CYGWIN also uses UNIX settings
501 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_UNIX
502 #define wxPATH_SEP wxPATH_SEP_UNIX
503 #elif defined(__MAC__)
504 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_MAC
505 #define wxPATH_SEP wxPATH_SEP_MAC
506 #else // Windows and OS/2
507 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_DOS
508 #define wxPATH_SEP wxPATH_SEP_DOS
509 #endif // Unix/Windows
510
511 // this is useful for wxString::IsSameAs(): to compare two file names use
512 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
513 #if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
514 #define wxARE_FILENAMES_CASE_SENSITIVE true
515 #else // Windows, Mac OS and OS/2
516 #define wxARE_FILENAMES_CASE_SENSITIVE false
517 #endif // Unix/Windows
518
519 // is the char a path separator?
520 inline bool wxIsPathSeparator(wxChar c)
521 {
522 // under DOS/Windows we should understand both Unix and DOS file separators
523 #if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
524 return c == wxFILE_SEP_PATH;
525 #else
526 return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
527 #endif
528 }
529
530 // does the string ends with path separator?
531 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);
532
533 // split the full path into path (including drive for DOS), name and extension
534 // (understands both '/' and '\\')
535 WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
536 wxString *pstrPath,
537 wxString *pstrName,
538 wxString *pstrExt);
539
540 // find a file in a list of directories, returns false if not found
541 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);
542
543 // Get the OS directory if appropriate (such as the Windows directory).
544 // On non-Windows platform, probably just return the empty string.
545 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
546
547 // Get file modification time
548 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
549
550 // Parses the wildCard, returning the number of filters.
551 // Returns 0 if none or if there's a problem,
552 // The arrays will contain an equal number of items found before the error.
553 // wildCard is in the form:
554 // "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
555 WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
556
557 // ----------------------------------------------------------------------------
558 // classes
559 // ----------------------------------------------------------------------------
560
561 #ifdef __UNIX__
562
563 // set umask to the given value in ctor and reset it to the old one in dtor
564 class WXDLLIMPEXP_BASE wxUmaskChanger
565 {
566 public:
567 // change the umask to the given one if it is not -1: this allows to write
568 // the same code whether you really want to change umask or not, as is in
569 // wxFileConfig::Flush() for example
570 wxUmaskChanger(int umaskNew)
571 {
572 m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
573 }
574
575 ~wxUmaskChanger()
576 {
577 if ( m_umaskOld != -1 )
578 umask((mode_t)m_umaskOld);
579 }
580
581 private:
582 int m_umaskOld;
583 };
584
585 // this macro expands to an "anonymous" wxUmaskChanger object under Unix and
586 // nothing elsewhere
587 #define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
588
589 #else // !__UNIX__
590
591 #define wxCHANGE_UMASK(m)
592
593 #endif // __UNIX__/!__UNIX__
594
595
596 // Path searching
597 class WXDLLIMPEXP_BASE wxPathList : public wxStringList
598 {
599 public:
600 // avoid GCC warning about virtual functions w/o virtual dtor
601 virtual ~wxPathList() {}
602
603 // Adds all paths in environment variable
604 void AddEnvList(const wxString& envVariable);
605
606 void Add(const wxString& path);
607 // Find the first full path for which the file exists
608 wxString FindValidPath(const wxString& filename);
609 // Find the first full path for which the file exists; ensure it's an
610 // absolute path that gets returned.
611 wxString FindAbsoluteValidPath(const wxString& filename);
612 // Given full path and filename, add path to list
613 void EnsureFileAccessible(const wxString& path);
614 // Returns true if the path is in the list
615 bool Member(const wxString& path);
616
617 private:
618 // DECLARE_DYNAMIC_CLASS(wxPathList)
619 };
620
621 #endif
622 // _WX_FILEFN_H_
wxWidgets (Impactor)