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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: filefn.h | |
3 | // Purpose: interface of wxPathList and file functions | |
4 | // Author: wxWidgets team | |
5 | // RCS-ID: $Id$ | |
6 | // Licence: wxWindows license | |
7 | ///////////////////////////////////////////////////////////////////////////// | |
8 | ||
9 | /** | |
10 | @class wxPathList | |
11 | @wxheader{filefn.h} | |
12 | ||
13 | The path list is a convenient way of storing a number of directories, and | |
14 | when presented with a filename without a directory, searching for an | |
15 | existing file in those directories. | |
16 | ||
17 | Be sure to look also at wxStandardPaths if you only want to search files in | |
18 | some standard paths. | |
19 | ||
20 | @library{wxbase} | |
21 | @category{file} | |
22 | ||
23 | @see wxArrayString, wxStandardPaths, wxFileName | |
24 | */ | |
25 | class wxPathList : public wxArrayString | |
26 | { | |
27 | public: | |
28 | wxPathList(); | |
29 | ||
30 | /** | |
31 | Constructs the object calling the Add() function. | |
32 | */ | |
33 | wxPathList(const wxArrayString& arr); | |
34 | ||
35 | /** | |
36 | Adds the given directory to the path list, if the @a path is not already in the list. | |
37 | If the path cannot be normalized for some reason, it returns @false. | |
38 | ||
39 | The @a path is always considered to be a directory but no existence checks will be | |
40 | done on it (because if it doesn't exist, it could be created later and thus result a | |
41 | valid path when FindValidPath() is called). | |
42 | ||
43 | @note if the given path is relative, it won't be made absolute before adding it | |
44 | (this is why FindValidPath() may return relative paths). | |
45 | */ | |
46 | bool Add(const wxString& path); | |
47 | ||
48 | /** | |
49 | Adds all elements of the given array as paths. | |
50 | */ | |
51 | void Add(const wxArrayString& arr); | |
52 | ||
53 | /** | |
54 | Finds the value of the given environment variable, and adds all paths | |
55 | to the path list. | |
56 | ||
57 | Useful for finding files in the @c PATH variable, for example. | |
58 | */ | |
59 | void AddEnvList(const wxString& env_variable); | |
60 | ||
61 | /** | |
62 | Given a full filename (with path), calls Add() with the path of the file. | |
63 | */ | |
64 | bool EnsureFileAccessible(const wxString& filename); | |
65 | ||
66 | /** | |
67 | Like FindValidPath() but this function always returns an absolute path | |
68 | (eventually prepending the current working directory to the value returned | |
69 | wxPathList::FindValidPath()) or an empty string. | |
70 | */ | |
71 | wxString FindAbsoluteValidPath(const wxString& file) const; | |
72 | ||
73 | /** | |
74 | Searches the given file in all paths stored in this class. | |
75 | ||
76 | The first path which concatenated to the given string points to an existing | |
77 | file (see wxFileExists()) is returned. | |
78 | ||
79 | If the file wasn't found in any of the stored paths, an empty string is returned. | |
80 | ||
81 | The given string must be a file name, eventually with a path prefix (if the path | |
82 | prefix is absolute, only its name will be searched); i.e. it must not end with | |
83 | a directory separator (see wxFileName::GetPathSeparator) otherwise an assertion | |
84 | will fail. | |
85 | ||
86 | The returned path may be relative to the current working directory. | |
87 | ||
88 | Note in fact that wxPathList can be used to store both relative and absolute | |
89 | paths so that if you added relative paths, then the current working directory | |
90 | (see wxGetCwd() and wxSetWorkingDirectory()) may affect the value returned | |
91 | by this function! | |
92 | */ | |
93 | wxString FindValidPath(const wxString& file) const; | |
94 | }; | |
95 | ||
96 | ||
97 | ||
98 | // ============================================================================ | |
99 | // Global functions/macros | |
100 | // ============================================================================ | |
101 | ||
102 | /** @ingroup group_funcmacro_file */ | |
103 | //@{ | |
104 | ||
105 | /** | |
106 | Under Unix this macro changes the current process umask to the given value, | |
107 | unless it is equal to -1 in which case nothing is done, and restores it to | |
108 | the original value on scope exit. It works by declaring a variable which | |
109 | sets umask to @a mask in its constructor and restores it in its destructor. | |
110 | Under other platforms this macro expands to nothing. | |
111 | ||
112 | @header{wx/filefn.h} | |
113 | */ | |
114 | #define wxCHANGE_UMASK(int mask) | |
115 | ||
116 | /** | |
117 | This function returns the total number of bytes and number of free bytes on | |
118 | the disk containing the directory @a path (it should exist). Both @a total | |
119 | and @a free parameters may be @NULL if the corresponding information is not | |
120 | needed. | |
121 | ||
122 | @since 2.3.2 | |
123 | ||
124 | @note The generic Unix implementation depends on the system having the | |
125 | @c statfs() or @c statvfs() function. | |
126 | ||
127 | @returns @true on success, @false if an error occurred (for example, the | |
128 | directory doesn’t exist). | |
129 | ||
130 | @header{wx/filefn.h} | |
131 | */ | |
132 | bool wxGetDiskSpace(const wxString& path, | |
133 | wxLongLong total = NULL, | |
134 | wxLongLong free = NULL); | |
135 | ||
136 | /** | |
137 | Returns the Windows directory under Windows; other platforms return an | |
138 | empty string. | |
139 | ||
140 | @header{wx/filefn.h} | |
141 | */ | |
142 | wxString wxGetOSDirectory(); | |
143 | ||
144 | /** | |
145 | Parses the @a wildCard, returning the number of filters. Returns 0 if none | |
146 | or if there's a problem. | |
147 | ||
148 | The arrays will contain an equal number of items found before the error. On | |
149 | platforms where native dialogs handle only one filter per entry, entries in | |
150 | arrays are automatically adjusted. @a wildCard is in the form: | |
151 | ||
152 | @code | |
153 | "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png" | |
154 | @endcode | |
155 | ||
156 | @header{wx/filefn.h} | |
157 | */ | |
158 | int wxParseCommonDialogsFilter(const wxString& wildCard, | |
159 | wxArrayString& descriptions, | |
160 | wxArrayString& filters); | |
161 | ||
162 | /** | |
163 | Converts a DOS to a Unix filename by replacing backslashes with forward | |
164 | slashes. | |
165 | ||
166 | @header{wx/filefn.h} | |
167 | */ | |
168 | void wxDos2UnixFilename(wxChar* s); | |
169 | ||
170 | /** | |
171 | @warning This function is deprecated, use wxFileName instead. | |
172 | ||
173 | Converts a Unix to a DOS filename by replacing forward slashes with | |
174 | backslashes. | |
175 | ||
176 | @header{wx/filefn.h} | |
177 | */ | |
178 | void wxUnix2DosFilename(wxChar* s); | |
179 | ||
180 | /** | |
181 | Returns @true if @a dirname exists and is a directory. | |
182 | ||
183 | @header{wx/filefn.h} | |
184 | */ | |
185 | bool wxDirExists(const wxString& dirname); | |
186 | ||
187 | /** | |
188 | @warning This function is obsolete, please use wxFileName::SplitPath() | |
189 | instead. | |
190 | ||
191 | This function splits a full file name into components: the path (including | |
192 | possible disk/drive specification under Windows), the base name, and the | |
193 | extension. Any of the output parameters (@a path, @a name or @a ext) may be | |
194 | @NULL if you are not interested in the value of a particular component. | |
195 | ||
196 | wxSplitPath() will correctly handle filenames with both DOS and Unix path | |
197 | separators under Windows, however it will not consider backslashes as path | |
198 | separators under Unix (where backslash is a valid character in a filename). | |
199 | ||
200 | On entry, @a fullname should be non-@NULL (it may be empty though). | |
201 | ||
202 | On return, @a path contains the file path (without the trailing separator), | |
203 | @a name contains the file name and @c ext contains the file extension | |
204 | without leading dot. All three of them may be empty if the corresponding | |
205 | component is. The old contents of the strings pointed to by these | |
206 | parameters will be overwritten in any case (if the pointers are not @NULL). | |
207 | ||
208 | @header{wx/filefn.h} | |
209 | */ | |
210 | void wxSplitPath(const wxString& fullname, | |
211 | wxString* path, | |
212 | wxString* name, | |
213 | wxString* ext); | |
214 | ||
215 | /** | |
216 | Returns time of last modification of given file. | |
217 | ||
218 | The function returns <tt>(time_t)-1</tt> if an error occurred (e.g. file | |
219 | not found). | |
220 | ||
221 | @header{wx/filefn.h} | |
222 | */ | |
223 | time_t wxFileModificationTime(const wxString& filename); | |
224 | ||
225 | /** | |
226 | Renames @a file1 to @e file2, returning @true if successful. | |
227 | ||
228 | If @a overwrite parameter is @true (default), the destination file is | |
229 | overwritten if it exists, but if @a overwrite is @false, the functions | |
230 | fails in this case. | |
231 | ||
232 | @header{wx/filefn.h} | |
233 | */ | |
234 | bool wxRenameFile(const wxString& file1, | |
235 | const wxString& file2, | |
236 | bool overwrite = true); | |
237 | ||
238 | /** | |
239 | Copies @a file1 to @e file2, returning @true if successful. If @a overwrite | |
240 | parameter is @true (default), the destination file is overwritten if it | |
241 | exists, but if @a overwrite is @false, the functions fails in this case. | |
242 | ||
243 | This function supports resources forks under Mac OS. | |
244 | ||
245 | @header{wx/filefn.h} | |
246 | */ | |
247 | bool wxCopyFile(const wxString& file1, | |
248 | const wxString& file2, | |
249 | bool overwrite = true); | |
250 | ||
251 | /** | |
252 | Returns @true if the file exists and is a plain file. | |
253 | ||
254 | @header{wx/filefn.h} | |
255 | */ | |
256 | bool wxFileExists(const wxString& filename); | |
257 | ||
258 | /** | |
259 | Returns @true if the @a pattern matches the @e text; if @a dot_special is | |
260 | @true, filenames beginning with a dot are not matched with wildcard | |
261 | characters. | |
262 | ||
263 | @see wxIsWild() | |
264 | ||
265 | @header{wx/filefn.h} | |
266 | */ | |
267 | bool wxMatchWild(const wxString& pattern, | |
268 | const wxString& text, | |
269 | bool dot_special); | |
270 | ||
271 | /** | |
272 | @warning This function is deprecated, use wxGetCwd() instead. | |
273 | ||
274 | Copies the current working directory into the buffer if supplied, or copies | |
275 | the working directory into new storage (which you must delete yourself) if | |
276 | the buffer is @NULL. | |
277 | ||
278 | @a sz is the size of the buffer if supplied. | |
279 | ||
280 | @header{wx/filefn.h} | |
281 | */ | |
282 | wxString wxGetWorkingDirectory(char* buf = NULL, int sz = 1000); | |
283 | ||
284 | /** | |
285 | Returns the directory part of the filename. | |
286 | ||
287 | @header{wx/filefn.h} | |
288 | */ | |
289 | wxString wxPathOnly(const wxString& path); | |
290 | ||
291 | /** | |
292 | Returns @true if the pattern contains wildcards. | |
293 | ||
294 | @see wxMatchWild() | |
295 | ||
296 | @header{wx/filefn.h} | |
297 | */ | |
298 | bool wxIsWild(const wxString& pattern); | |
299 | ||
300 | /** | |
301 | Returns @true if the argument is an absolute filename, i.e. with a slash | |
302 | or drive name at the beginning. | |
303 | ||
304 | @header{wx/filefn.h} | |
305 | */ | |
306 | bool wxIsAbsolutePath(const wxString& filename); | |
307 | ||
308 | /** | |
309 | Returns a string containing the current (or working) directory. | |
310 | ||
311 | @header{wx/filefn.h} | |
312 | */ | |
313 | wxString wxGetCwd(); | |
314 | ||
315 | /** | |
316 | Sets the current working directory, returning @true if the operation | |
317 | succeeded. Under MS Windows, the current drive is also changed if @a dir | |
318 | contains a drive specification. | |
319 | ||
320 | @header{wx/filefn.h} | |
321 | */ | |
322 | bool wxSetWorkingDirectory(const wxString& dir); | |
323 | ||
324 | /** | |
325 | Concatenates @a file1 and @a file2 to @e file3, returning @true if | |
326 | successful. | |
327 | ||
328 | @header{wx/filefn.h} | |
329 | */ | |
330 | bool wxConcatFiles(const wxString& file1, | |
331 | const wxString& file2, | |
332 | const wxString& file3); | |
333 | ||
334 | /** | |
335 | Removes @e file, returning @true if successful. | |
336 | ||
337 | @header{wx/filefn.h} | |
338 | */ | |
339 | bool wxRemoveFile(const wxString& file); | |
340 | ||
341 | /** | |
342 | Makes the directory @a dir, returning @true if successful. | |
343 | ||
344 | @a perm is the access mask for the directory for the systems on which it is | |
345 | supported (Unix) and doesn't have any effect on the other ones. | |
346 | ||
347 | @header{wx/filefn.h} | |
348 | */ | |
349 | bool wxMkdir(const wxString& dir, int perm = 0777); | |
350 | ||
351 | /** | |
352 | Removes the directory @a dir, returning @true if successful. Does not work | |
353 | under VMS. | |
354 | ||
355 | The @a flags parameter is reserved for future use. | |
356 | ||
357 | @note There is also a wxRmDir() function which simply wraps the standard | |
358 | POSIX @c rmdir() function and so return an integer error code instead | |
359 | of a boolean value (but otherwise is currently identical to | |
360 | wxRmdir()), don't confuse these two functions. | |
361 | ||
362 | @header{wx/filefn.h} | |
363 | */ | |
364 | bool wxRmdir(const wxString& dir, int flags = 0); | |
365 | ||
366 | /** | |
367 | Returns the next file that matches the path passed to wxFindFirstFile(). | |
368 | ||
369 | See wxFindFirstFile() for an example. | |
370 | ||
371 | @header{wx/filefn.h} | |
372 | */ | |
373 | wxString wxFindNextFile(); | |
374 | ||
375 | /** | |
376 | This function does directory searching; returns the first file that matches | |
377 | the path @a spec, or the empty string. Use wxFindNextFile() to get the next | |
378 | matching file. Neither will report the current directory "." or the parent | |
379 | directory "..". | |
380 | ||
381 | @warning As of 2.5.2, these functions are not thread-safe! (they use static | |
382 | variables). You probably want to use wxDir::GetFirst() or | |
383 | wxDirTraverser instead. | |
384 | ||
385 | @a spec may contain wildcards. | |
386 | ||
387 | @a flags may be wxDIR for restricting the query to directories, wxFILE for | |
388 | files or zero for either. | |
389 | ||
390 | For example: | |
391 | ||
392 | @code | |
393 | wxString f = wxFindFirstFile("/home/project/*.*"); | |
394 | while ( !f.empty() ) | |
395 | { | |
396 | ... | |
397 | f = wxFindNextFile(); | |
398 | } | |
399 | @endcode | |
400 | ||
401 | @header{wx/filefn.h} | |
402 | */ | |
403 | wxString wxFindFirstFile(const wxString& spec, int flags = 0); | |
404 | ||
405 | /** | |
406 | File kind enumerations returned from wxGetFileKind(). | |
407 | ||
408 | @header{wx/filefn.h} | |
409 | */ | |
410 | enum wxFileKind | |
411 | { | |
412 | wxFILE_KIND_UNKNOWN, ///< Unknown file kind, or unable to determine | |
413 | wxFILE_KIND_DISK, ///< A file supporting seeking to arbitrary offsets | |
414 | wxFILE_KIND_TERMINAL, ///< A tty | |
415 | wxFILE_KIND_PIPE ///< A pipe | |
416 | }; | |
417 | ||
418 | //@} | |
419 | ||
420 | /** @ingroup group_funcmacro_file */ | |
421 | //@{ | |
422 | /** | |
423 | Returns the type of an open file. Possible return values are enumerations | |
424 | of ::wxFileKind. | |
425 | ||
426 | @header{wx/filefn.h} | |
427 | */ | |
428 | wxFileKind wxGetFileKind(int fd); | |
429 | wxFileKind wxGetFileKind(FILE* fp); | |
430 | //@} | |
431 | ||
432 | /** @ingroup group_funcmacro_file */ | |
433 | //@{ | |
434 | /** | |
435 | @warning This function is obsolete, please use wxFileName::SplitPath() | |
436 | instead. | |
437 | ||
438 | Returns the filename for a full path. The second form returns a pointer to | |
439 | temporary storage that should not be deallocated. | |
440 | ||
441 | @header{wx/filefn.h} | |
442 | */ | |
443 | wxString wxFileNameFromPath(const wxString& path); | |
444 | char* wxFileNameFromPath(char* path); | |
445 | //@} | |
446 | ||
447 | /** @ingroup group_funcmacro_file */ | |
448 | //@{ | |
449 | /** | |
450 | @warning This function is obsolete, please use | |
451 | wxFileName::CreateTempFileName() instead. | |
452 | ||
453 | @header{wx/filefn.h} | |
454 | */ | |
455 | char* wxGetTempFileName(const wxString& prefix, char* buf = NULL); | |
456 | bool wxGetTempFileName(const wxString& prefix, wxString& buf); | |
457 | //@} | |
458 |