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
  21 #ifndef __WXWINCE__
  22 #include <time.h>
  23 #endif
  24
  25 // ----------------------------------------------------------------------------
  26 // constants
  27 // ----------------------------------------------------------------------------
  28
  29 #ifdef __WXWINCE__
  30     typedef long off_t;
  31 #else
  32
  33 // define off_t
  34 #if !defined(__WXMAC__) || defined(__UNIX__) || defined(__MACH__)
  35     #include  <sys/types.h>
  36 #else
  37     typedef long off_t;
  38 #endif
  39
  40 #if defined(__VISUALC__) || ( defined(__MWERKS__) && defined( __INTEL__) )
  41     typedef _off_t off_t;
  42 #elif defined(__BORLANDC__) && defined(__WIN16__)
  43     typedef long off_t;
  44 #elif defined(__SYMANTEC__)
  45     typedef long off_t;
  46 #elif defined(__MWERKS__) && !defined(__INTEL__) && !defined(__MACH__)
  47     typedef long off_t;
  48 #endif
  49
  50 #endif
  51
  52 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
  53 //
  54 // VisualAge C++ V4.0 cannot have any external linkage const decs
  55 // in headers included by more than one primary source
  56 //
  57 extern const off_t wxInvalidOffset;
  58 #else
  59 const off_t wxInvalidOffset = (off_t)-1;
  60 #endif
  61
  62 enum wxSeekMode
  63 {
  64   wxFromStart,
  65   wxFromCurrent,
  66   wxFromEnd
  67 };
  68
  69 // ----------------------------------------------------------------------------
  70 // declare our versions of low level file functions: some compilers prepend
  71 // underscores to the usual names, some also have Unicode versions of them
  72 // ----------------------------------------------------------------------------
  73
  74 // Microsoft compiler loves underscores, feed them to it
  75 #if defined( __VISUALC__ ) \
  76     || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
  77     || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
  78     || ( defined(__WATCOMC__) && defined(__WXMSW__) )
  79     // functions
  80 #if defined(__BORLANDC__) || defined(__WATCOMC__)
  81     #define   _tell        tell
  82 #endif
  83     #define   wxClose      _close
  84     #define   wxRead       _read
  85     #define   wxWrite      _write
  86     #define   wxLseek      _lseek
  87     #define   wxFsync      _commit
  88     #define   wxEof        _eof
  89
  90     #define   wxTell       _tell
  91
  92     #if wxUSE_UNICODE
  93         #if wxUSE_UNICODE_MSLU
  94             #define   wxOpen       wxMSLU__wopen
  95
  96             #define   wxAccess     wxMSLU__waccess
  97             #define   wxMkDir      wxMSLU__wmkdir
  98             #define   wxRmDir      wxMSLU__wrmdir
  99             #define   wxStat       wxMSLU__wstat
 100         #else
 101             #define   wxOpen       _wopen
 102             #define   wxAccess     _waccess
 103             #define   wxMkDir      _wmkdir
 104             #define   wxRmDir      _wrmdir
 105             #define   wxStat       _wstat
 106         #endif
 107     #else // !wxUSE_UNICODE
 108 #ifdef __BORLANDC__
 109         #define   wxOpen       open
 110 #else
 111         #define   wxOpen       _open
 112 #endif
 113         #define   wxAccess     _access
 114         #define   wxMkDir      _mkdir
 115 #ifdef __WATCOMC__
 116         #define   wxRmDir      rmdir
 117 #else
 118         #define   wxRmDir      _rmdir
 119 #endif
 120         #define   wxStat       _stat
 121     #endif
 122
 123     // types
 124 #if defined(__WATCOMC__)&& wxUSE_UNICODE
 125     #define   wxStructStat struct _wstat
 126 #else
 127     #define   wxStructStat struct _stat
 128 #endif
 129
 130     // constants (unless already defined by the user code)
 131     #if !defined(O_RDONLY) && !defined(__BORLANDC__) && !defined(__WATCOMC__)
 132         #define   O_RDONLY    _O_RDONLY
 133         #define   O_WRONLY    _O_WRONLY
 134         #define   O_RDWR      _O_RDWR
 135         #define   O_EXCL      _O_EXCL
 136         #define   O_CREAT     _O_CREAT
 137         #define   O_BINARY    _O_BINARY
 138     #endif
 139
 140     #if !defined(__BORLANDC__) && !defined(__WATCOMC__)
 141         #define   S_IFMT      _S_IFMT
 142         #define   S_IFDIR     _S_IFDIR
 143         #define   S_IFREG     _S_IFREG
 144     #endif // O_RDONLY
 145 #else
 146     // functions
 147     #define   wxClose      close
 148     #define   wxRead       read
 149     #define   wxWrite      write
 150     #define   wxLseek      lseek
 151     #define   wxFsync      commit
 152     #define   wxEof        eof
 153
 154     #define   wxMkDir      mkdir
 155     #define   wxRmDir      rmdir
 156
 157     #define   wxTell(fd)   lseek(fd, 0, SEEK_CUR)
 158
 159     #define   wxStructStat struct stat
 160
 161 #if wxUSE_UNICODE
 162 #   define wxNEED_WX_UNISTD_H
 163 #if defined(__MWERKS__) && defined(macintosh)
 164         #include <sys/stat.h>
 165 #endif
 166 WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
 167 WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
 168 WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
 169 #else
 170     #define   wxOpen       open
 171     #define   wxStat       stat
 172     #define   wxAccess     access
 173 #endif
 174
 175 #endif  // VC++
 176
 177 // ----------------------------------------------------------------------------
 178 // functions
 179 // ----------------------------------------------------------------------------
 180 WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
 181
 182 // does the path exist? (may have or not '/' or '\\' at the end)
 183 WXDLLIMPEXP_BASE bool wxPathExists(const wxChar *pszPathName);
 184
 185 WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
 186
 187 // Get filename
 188 WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
 189 WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
 190
 191 // Get directory
 192 WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
 193
 194 // wxString version
 195 WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path);
 196
 197 WXDLLIMPEXP_BASE void wxDos2UnixFilename(wxChar *s);
 198
 199 WXDLLIMPEXP_BASE void wxUnix2DosFilename(wxChar *s);
 200
 201 // Strip the extension, in situ
 202 WXDLLIMPEXP_BASE void wxStripExtension(wxChar *buffer);
 203 WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer);
 204
 205 // Get a temporary filename
 206 WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = (wxChar *) NULL);
 207 WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf);
 208
 209 // Expand file name (~/ and ${OPENWINHOME}/ stuff)
 210 WXDLLIMPEXP_BASE wxChar* wxExpandPath(wxChar *dest, const wxChar *path);
 211 WXDLLIMPEXP_BASE bool wxExpandPath(wxString& dest, const wxChar *path);
 212
 213 // Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
 214 // and make (if under the home tree) relative to home
 215 // [caller must copy-- volatile]
 216 WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
 217                                    const wxString& envname = wxEmptyString,
 218                                    const wxString& user = wxEmptyString);
 219
 220 // Destructive removal of /./ and /../ stuff
 221 WXDLLIMPEXP_BASE wxChar* wxRealPath(wxChar *path);
 222
 223 // Allocate a copy of the full absolute path
 224 WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path);
 225
 226 // Get first file name matching given wild card.
 227 // Flags are reserved for future use.
 228 #define wxFILE  1
 229 #define wxDIR   2
 230 WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxChar *spec, int flags = wxFILE);
 231 WXDLLIMPEXP_BASE wxString wxFindNextFile();
 232
 233 // Does the pattern contain wildcards?
 234 WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
 235
 236 // Does the pattern match the text (usually a filename)?
 237 // If dot_special is TRUE, doesn't match * against . (eliminating
 238 // `hidden' dot files)
 239 WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern,  const wxString& text, bool dot_special = TRUE);
 240
 241 // Concatenate two files to form third
 242 WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
 243
 244 // Copy file1 to file2
 245 WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
 246                             bool overwrite = TRUE);
 247
 248 // Remove file
 249 WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
 250
 251 // Rename file
 252 WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2);
 253
 254 // Get current working directory.
 255 // If buf is NULL, allocates space using new, else
 256 // copies into buf.
 257 // IMPORTANT NOTE getcwd is know not to work under some releases
 258 // of Win32s 1.3, according to MS release notes!
 259 WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000);
 260 // new and preferred version of wxGetWorkingDirectory
 261 // NB: can't have the same name because of overloading ambiguity
 262 WXDLLIMPEXP_BASE wxString wxGetCwd();
 263
 264 // Set working directory
 265 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
 266
 267 // Make directory
 268 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);
 269
 270 // Remove directory. Flags reserved for future use.
 271 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
 272
 273 // compatibility defines, don't use in new code
 274 #define wxDirExists wxPathExists
 275
 276 // ----------------------------------------------------------------------------
 277 // separators in file names
 278 // ----------------------------------------------------------------------------
 279
 280 // between file name and extension
 281 #define wxFILE_SEP_EXT        wxT('.')
 282
 283 // between drive/volume name and the path
 284 #define wxFILE_SEP_DSK        wxT(':')
 285
 286 // between the path components
 287 #define wxFILE_SEP_PATH_DOS   wxT('\\')
 288 #define wxFILE_SEP_PATH_UNIX  wxT('/')
 289 #define wxFILE_SEP_PATH_MAC   wxT(':')
 290 #define wxFILE_SEP_PATH_VMS   wxT('.') // VMS also uses '[' and ']'
 291
 292 // separator in the path list (as in PATH environment variable)
 293 // there is no PATH variable in Classic Mac OS so just use the
 294 // semicolon (it must be different from the file name separator)
 295 // NB: these are strings and not characters on purpose!
 296 #define wxPATH_SEP_DOS        wxT(";")
 297 #define wxPATH_SEP_UNIX       wxT(":")
 298 #define wxPATH_SEP_MAC        wxT(";")
 299
 300 // platform independent versions
 301 #if defined(__UNIX__) && !defined(__CYGWIN__)
 302   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_UNIX
 303   #define wxPATH_SEP          wxPATH_SEP_UNIX
 304 #elif defined(__MAC__)
 305   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_MAC
 306   #define wxPATH_SEP          wxPATH_SEP_MAC
 307 #elif defined(__CYGWIN__) // Cygwin
 308   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
 309   #define wxPATH_SEP          wxPATH_SEP_UNIX
 310 #else   // Windows and OS/2
 311   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
 312   #define wxPATH_SEP          wxPATH_SEP_DOS
 313 #endif  // Unix/Windows
 314
 315 // this is useful for wxString::IsSameAs(): to compare two file names use
 316 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
 317 #if defined(__UNIX__) && !defined(__DARWIN__)
 318   #define wxARE_FILENAMES_CASE_SENSITIVE  TRUE
 319 #else   // Windows, Mac OS and OS/2
 320   #define wxARE_FILENAMES_CASE_SENSITIVE  FALSE
 321 #endif  // Unix/Windows
 322
 323 // is the char a path separator?
 324 inline bool wxIsPathSeparator(wxChar c)
 325 {
 326     // under DOS/Windows we should understand both Unix and DOS file separators
 327 #if defined(__UNIX__) || defined(__MAC__)
 328     return c == wxFILE_SEP_PATH;
 329 #else
 330     return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
 331 #endif
 332 }
 333
 334 // does the string ends with path separator?
 335 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);
 336
 337 // split the full path into path (including drive for DOS), name and extension
 338 // (understands both '/' and '\\')
 339 WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
 340                              wxString *pstrPath,
 341                              wxString *pstrName,
 342                              wxString *pstrExt);
 343
 344 // find a file in a list of directories, returns false if not found
 345 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);
 346
 347 // Get the OS directory if appropriate (such as the Windows directory).
 348 // On non-Windows platform, probably just return the empty string.
 349 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
 350
 351 // Get file modification time
 352 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
 353
 354 // ----------------------------------------------------------------------------
 355 // classes
 356 // ----------------------------------------------------------------------------
 357
 358 // Path searching
 359 class WXDLLIMPEXP_BASE wxPathList : public wxStringList
 360 {
 361 public:
 362     // avoid GCC warning about virtual functions w/o virtual dtor
 363     virtual ~wxPathList() {}
 364
 365     // Adds all paths in environment variable
 366     void AddEnvList(const wxString& envVariable);
 367
 368     void Add(const wxString& path);
 369     // Find the first full path for which the file exists
 370     wxString FindValidPath(const wxString& filename);
 371     // Find the first full path for which the file exists; ensure it's an
 372     // absolute path that gets returned.
 373     wxString FindAbsoluteValidPath(const wxString& filename);
 374     // Given full path and filename, add path to list
 375     void EnsureFileAccessible(const wxString& path);
 376     // Returns TRUE if the path is in the list
 377     bool Member(const wxString& path);
 378
 379 private:
 380     // DECLARE_DYNAMIC_CLASS(wxPathList)
 381 };
 382
 383 #endif
 384   // _WX_FILEFN_H_