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Introduced invalidation of ranges for later optimization code
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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
117enum wxSeekMode
118{
119 wxFromStart,
120 wxFromCurrent,
121 wxFromEnd
122};
123
124enum 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 #if wxHAS_HUGE_FILES
280 #if wxUSE_UNICODE && defined(__WATCOMC__)
281 #define wxStructStat struct _wstati64
282 #else
283 #define wxStructStat struct _stati64
284 #endif
285 #else
286 #if wxUSE_UNICODE && defined(__WATCOMC__)
287 #define wxStructStat struct _wstat
288 #else
289 #define wxStructStat struct _stat
290 #endif
291 #endif
292
293 // constants (unless already defined by the user code)
294 #if !defined(__BORLANDC__) && !defined(__WATCOMC__) && !defined(__WXPALMOS__)
295 #ifndef O_RDONLY
296 #define O_RDONLY _O_RDONLY
297 #define O_WRONLY _O_WRONLY
298 #define O_RDWR _O_RDWR
299 #define O_EXCL _O_EXCL
300 #define O_CREAT _O_CREAT
301 #define O_BINARY _O_BINARY
302 #endif
303
304 #ifndef S_IFMT
305 #define S_IFMT _S_IFMT
306 #define S_IFDIR _S_IFDIR
307 #define S_IFREG _S_IFREG
308 #endif
309 #endif
310
311 // It's a private define, undefine it so nobody gets tempted to use it
312 #undef wxHAS_HUGE_FILES
313#else // Unix platforms using configure
314 typedef off_t wxFileOffset;
315 #ifdef _LARGE_FILES
316 #define wxFileOffsetFmtSpec wxLongLongFmtSpec
317 wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
318 BadFileSizeType );
319 #else
320 #define wxFileOffsetFmtSpec _T("")
321 #endif
322 // functions
323 #define wxClose close
324 #define wxRead ::read
325 #define wxWrite ::write
326 #define wxLseek lseek
327 #define wxSeek lseek
328 #define wxFsync fsync
329 #define wxEof eof
330
331 #define wxMkDir mkdir
332 #define wxRmDir rmdir
333
334 #define wxTell(fd) lseek(fd, 0, SEEK_CUR)
335
336 #define wxStructStat struct stat
337
338 #if wxUSE_UNICODE
339 #define wxNEED_WX_UNISTD_H
340 #if defined(__DMC__)
341 typedef unsigned long mode_t;
342 #endif
343 WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
344 WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
345 WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
346 #else
347 #define wxOpen open
348 #define wxStat stat
349 #define wxAccess access
350 #endif
351#endif // platforms
352
353#if defined(__VISAGECPP__) && __IBMCPP__ >= 400
354//
355// VisualAge C++ V4.0 cannot have any external linkage const decs
356// in headers included by more than one primary source
357//
358extern const int wxInvalidOffset;
359#else
360const int wxInvalidOffset = -1;
361#endif
362
363// ----------------------------------------------------------------------------
364// functions
365// ----------------------------------------------------------------------------
366WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
367
368// does the path exist? (may have or not '/' or '\\' at the end)
369WXDLLIMPEXP_BASE bool wxDirExists(const wxChar *pszPathName);
370
371WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
372
373// Get filename
374WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
375WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
376
377// Get directory
378WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
379
380// wxString version
381WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path);
382
383WXDLLIMPEXP_BASE void wxDos2UnixFilename(wxChar *s);
384
385WXDLLIMPEXP_BASE void wxUnix2DosFilename(wxChar *s);
386
387// Strip the extension, in situ
388WXDLLIMPEXP_BASE void wxStripExtension(wxChar *buffer);
389WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer);
390
391// Get a temporary filename
392WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = (wxChar *) NULL);
393WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf);
394
395// Expand file name (~/ and ${OPENWINHOME}/ stuff)
396WXDLLIMPEXP_BASE wxChar* wxExpandPath(wxChar *dest, const wxChar *path);
397WXDLLIMPEXP_BASE bool wxExpandPath(wxString& dest, const wxChar *path);
398
399// Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
400// and make (if under the home tree) relative to home
401// [caller must copy-- volatile]
402WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
403 const wxString& envname = wxEmptyString,
404 const wxString& user = wxEmptyString);
405
406// Destructive removal of /./ and /../ stuff
407WXDLLIMPEXP_BASE wxChar* wxRealPath(wxChar *path);
408
409// Allocate a copy of the full absolute path
410WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path);
411
412// Get first file name matching given wild card.
413// Flags are reserved for future use.
414#define wxFILE 1
415#define wxDIR 2
416WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxChar *spec, int flags = wxFILE);
417WXDLLIMPEXP_BASE wxString wxFindNextFile();
418
419// Does the pattern contain wildcards?
420WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
421
422// Does the pattern match the text (usually a filename)?
423// If dot_special is true, doesn't match * against . (eliminating
424// `hidden' dot files)
425WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern, const wxString& text, bool dot_special = true);
426
427// Concatenate two files to form third
428WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
429
430// Copy file1 to file2
431WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
432 bool overwrite = true);
433
434// Remove file
435WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
436
437// Rename file
438WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2);
439
440// Get current working directory.
441// If buf is NULL, allocates space using new, else
442// copies into buf.
443// IMPORTANT NOTE getcwd is know not to work under some releases
444// of Win32s 1.3, according to MS release notes!
445WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000);
446// new and preferred version of wxGetWorkingDirectory
447// NB: can't have the same name because of overloading ambiguity
448WXDLLIMPEXP_BASE wxString wxGetCwd();
449
450// Set working directory
451WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
452
453// Make directory
454WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);
455
456// Remove directory. Flags reserved for future use.
457WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
458
459// Return the type of an open file
460WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
461WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
462
463// compatibility defines, don't use in new code
464// consider removal droping 2.4 compatibility
465// #if WXWIN_COMPATIBILITY_2_4
466wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
467inline bool wxPathExists(const wxChar *pszPathName)
468{
469 return wxDirExists(pszPathName);
470}
471// #endif //WXWIN_COMPATIBILITY_2_4
472
473// ----------------------------------------------------------------------------
474// separators in file names
475// ----------------------------------------------------------------------------
476
477// between file name and extension
478#define wxFILE_SEP_EXT wxT('.')
479
480// between drive/volume name and the path
481#define wxFILE_SEP_DSK wxT(':')
482
483// between the path components
484#define wxFILE_SEP_PATH_DOS wxT('\\')
485#define wxFILE_SEP_PATH_UNIX wxT('/')
486#define wxFILE_SEP_PATH_MAC wxT(':')
487#define wxFILE_SEP_PATH_VMS wxT('.') // VMS also uses '[' and ']'
488
489// separator in the path list (as in PATH environment variable)
490// there is no PATH variable in Classic Mac OS so just use the
491// semicolon (it must be different from the file name separator)
492// NB: these are strings and not characters on purpose!
493#define wxPATH_SEP_DOS wxT(";")
494#define wxPATH_SEP_UNIX wxT(":")
495#define wxPATH_SEP_MAC wxT(";")
496
497// platform independent versions
498#if defined(__UNIX__) && !defined(__OS2__)
499 // CYGWIN also uses UNIX settings
500 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_UNIX
501 #define wxPATH_SEP wxPATH_SEP_UNIX
502#elif defined(__MAC__)
503 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_MAC
504 #define wxPATH_SEP wxPATH_SEP_MAC
505#else // Windows and OS/2
506 #define wxFILE_SEP_PATH wxFILE_SEP_PATH_DOS
507 #define wxPATH_SEP wxPATH_SEP_DOS
508#endif // Unix/Windows
509
510// this is useful for wxString::IsSameAs(): to compare two file names use
511// filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
512#if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
513 #define wxARE_FILENAMES_CASE_SENSITIVE true
514#else // Windows, Mac OS and OS/2
515 #define wxARE_FILENAMES_CASE_SENSITIVE false
516#endif // Unix/Windows
517
518// is the char a path separator?
519inline bool wxIsPathSeparator(wxChar c)
520{
521 // under DOS/Windows we should understand both Unix and DOS file separators
522#if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
523 return c == wxFILE_SEP_PATH;
524#else
525 return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
526#endif
527}
528
529// does the string ends with path separator?
530WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);
531
532// split the full path into path (including drive for DOS), name and extension
533// (understands both '/' and '\\')
534WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
535 wxString *pstrPath,
536 wxString *pstrName,
537 wxString *pstrExt);
538
539// find a file in a list of directories, returns false if not found
540WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);
541
542// Get the OS directory if appropriate (such as the Windows directory).
543// On non-Windows platform, probably just return the empty string.
544WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
545
546// Get file modification time
547WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
548
549// Parses the wildCard, returning the number of filters.
550// Returns 0 if none or if there's a problem,
551// The arrays will contain an equal number of items found before the error.
552// wildCard is in the form:
553// "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
554WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
555
556// ----------------------------------------------------------------------------
557// classes
558// ----------------------------------------------------------------------------
559
560#ifdef __UNIX__
561
562// set umask to the given value in ctor and reset it to the old one in dtor
563class WXDLLIMPEXP_BASE wxUmaskChanger
564{
565public:
566 // change the umask to the given one if it is not -1: this allows to write
567 // the same code whether you really want to change umask or not, as is in
568 // wxFileConfig::Flush() for example
569 wxUmaskChanger(int umaskNew)
570 {
571 m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
572 }
573
574 ~wxUmaskChanger()
575 {
576 if ( m_umaskOld != -1 )
577 umask((mode_t)m_umaskOld);
578 }
579
580private:
581 int m_umaskOld;
582};
583
584// this macro expands to an "anonymous" wxUmaskChanger object under Unix and
585// nothing elsewhere
586#define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
587
588#else // !__UNIX__
589
590#define wxCHANGE_UMASK(m)
591
592#endif // __UNIX__/!__UNIX__
593
594
595// Path searching
596class WXDLLIMPEXP_BASE wxPathList : public wxStringList
597{
598public:
599 // avoid GCC warning about virtual functions w/o virtual dtor
600 virtual ~wxPathList() {}
601
602 // Adds all paths in environment variable
603 void AddEnvList(const wxString& envVariable);
604
605 void Add(const wxString& path);
606 // Find the first full path for which the file exists
607 wxString FindValidPath(const wxString& filename);
608 // Find the first full path for which the file exists; ensure it's an
609 // absolute path that gets returned.
610 wxString FindAbsoluteValidPath(const wxString& filename);
611 // Given full path and filename, add path to list
612 void EnsureFileAccessible(const wxString& path);
613 // Returns true if the path is in the list
614 bool Member(const wxString& path);
615
616private:
617 // DECLARE_DYNAMIC_CLASS(wxPathList)
618};
619
620#endif
621 // _WX_FILEFN_H_
wxWidgets (Impactor)