X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2c5e5cbdb438a3c2717a32ffa50177a319708c23..1a9a3ce9a39580a537b1cd25b4e207ac760075d6:/include/wx/filefn.h

diff --git a/include/wx/filefn.h b/include/wx/filefn.h
index 5839b81095..be3b3f1b53 100644
--- a/include/wx/filefn.h
+++ b/include/wx/filefn.h
@@ -155,30 +155,28 @@ enum wxFileKind
     #define   wxRmDir      _wrmdir
     #define   wxStat       _wstat
     #define   wxStructStat struct _stat
-
-// Microsoft compiler loves underscores, feed them to it
-#elif defined( __VISUALC__ ) \
-    || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
-    || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
-    || ( defined(__DMC__) && defined(__WXMSW__) ) \
-    || ( defined(__WATCOMC__) && defined(__WXMSW__) )
-
-    // detect compilers which have support for huge files (currently only
-    // Digital Mars doesn't)
-    #ifndef __WXPALMOS__
-    #include "wx/msw/private.h"
-    #endif
+#elif defined(__WXMSW__) && !defined(__WXPALMOS__) && \
+      ( \
+        defined(__VISUALC__) || \
+        (defined(__MINGW32__) && !defined(__WINE__) && \
+                                wxCHECK_W32API_VERSION(0, 5)) || \
+        defined(__MWERKS__) || \
+        defined(__DMC__) || \
+        defined(__WATCOMC__) || \
+        defined(__BORLANDC__) \
+      )
 
     #undef wxHAS_HUGE_FILES
-    #if defined(__MINGW32__)
+
+    // detect compilers which have support for huge files (notice that the
+    // first case covers MSVC, so we don't have to test for it explicitly)
+    #if ((_INTEGRAL_MAX_BITS >= 64) || defined(_LARGE_FILES))
         #define wxHAS_HUGE_FILES 1
-    #elif defined(__MWERKS__)
-        #define wxHAS_HUGE_FILES 0
-    #elif defined(__DMC__)
-        #define wxHAS_HUGE_FILES 0
-    #elif ((_INTEGRAL_MAX_BITS >= 64) || defined(_LARGE_FILES))
+    #elif defined(__MINGW32__)
         #define wxHAS_HUGE_FILES 1
     #else
+        // DMC, Watcom, Metrowerks and Borland don't have huge file support (or
+        // at least not all functions needed for it by wx) currently
         #define wxHAS_HUGE_FILES 0
     #endif
 
@@ -211,20 +209,22 @@ enum wxFileKind
             #define wxRead        ::read
             #define wxWrite       ::write
         #else
-            #define wxRead        _read
+            #define wxRead         _read
             #define wxWrite        _write
         #endif
     #endif
     #if wxHAS_HUGE_FILES
-        #define   wxSeek      _lseeki64
+        #define   wxSeek       _lseeki64
         #define   wxLseek      _lseeki64
         #define   wxTell       _telli64
-    #else
-        #define   wxSeek      _lseek
+    #else // !wxHAS_HUGE_FILES
+        #define   wxSeek       _lseek
         #define   wxLseek      _lseek
         #define   wxTell       _tell
-    #endif
+    #endif // wxHAS_HUGE_FILES/!wxHAS_HUGE_FILES
+
     #define   wxFsync      _commit
+
     #if defined(__WATCOMC__)
         #define   wxEof        ::eof
     #else
@@ -272,7 +272,7 @@ enum wxFileKind
         #else
             #define   wxStat       _stat
         #endif
-    #endif
+    #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 
     // Types: Notice that Watcom is the only compiler to have a wide char
     // version of struct stat as well as a wide char stat function variant.
@@ -292,7 +292,7 @@ enum wxFileKind
     #endif
 
     // constants (unless already defined by the user code)
-    #if !defined(__BORLANDC__) && !defined(__WATCOMC__) && !defined(__WXPALMOS__)
+    #if !defined(__BORLANDC__) && !defined(__WATCOMC__)
         #ifndef O_RDONLY
             #define   O_RDONLY    _O_RDONLY
             #define   O_WRONLY    _O_WRONLY
@@ -309,14 +309,31 @@ enum wxFileKind
         #endif
     #endif
 
-    // It's a private define, undefine it so nobody gets tempted to use it
+    #if wxHAS_HUGE_FILES
+        // wxFile is present and supports large files. Currently wxFFile
+        // doesn't have large file support with any Windows compiler (even
+        // Win64 ones).
+        #if wxUSE_FILE
+            #define wxHAS_LARGE_FILES
+        #endif
+    #endif
+
+    // it's a private define, undefine it so that nobody gets tempted to use it
     #undef wxHAS_HUGE_FILES
-#else // Unix platforms using configure
+#else // Unix or Windows using unknown compiler, assume POSIX supported
     typedef off_t wxFileOffset;
     #ifdef _LARGE_FILES
         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
         wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
                                 BadFileSizeType );
+        // wxFile is present and supports large files
+        #ifdef wxUSE_FILE
+            #define wxHAS_LARGE_FILES
+        #endif
+        // wxFFile is present and supports large files
+        #if SIZEOF_LONG == 8 || defined HAVE_FSEEKO
+            #define wxHAS_LARGE_FFILES
+        #endif
     #else
         #define wxFileOffsetFmtSpec _T("")
     #endif
@@ -342,15 +359,31 @@ enum wxFileKind
             typedef unsigned long mode_t;
         #endif
         WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
+        WXDLLIMPEXP_BASE int wxLstat( const wxChar *file_name, wxStructStat *buf );
         WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
         WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
     #else
         #define   wxOpen       open
         #define   wxStat       stat
+        #define   wxLstat      lstat
         #define   wxAccess     access
     #endif
+
+    #define wxHAS_NATIVE_LSTAT
 #endif // platforms
 
+#ifdef O_BINARY
+    #define wxO_BINARY O_BINARY
+#else
+    #define wxO_BINARY 0
+#endif
+
+// if the platform doesn't have symlinks, define wxLstat to be the same as
+// wxStat to avoid #ifdefs in the code using it
+#ifndef wxHAS_NATIVE_LSTAT
+    #define wxLstat wxStat
+#endif
+
 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 //
 // VisualAge C++ V4.0 cannot have any external linkage const decs
@@ -472,6 +505,11 @@ inline bool wxPathExists(const wxChar *pszPathName)
 }
 #endif //WXWIN_COMPATIBILITY_2_6
 
+// permissions; these functions work both on files and directories:
+WXDLLIMPEXP_BASE bool wxIsWritable(const wxString &path);
+WXDLLIMPEXP_BASE bool wxIsReadable(const wxString &path);
+WXDLLIMPEXP_BASE bool wxIsExecutable(const wxString &path);
+
 // ----------------------------------------------------------------------------
 // separators in file names
 // ----------------------------------------------------------------------------