#ifndef __WIN32__
// Under Unix-ish systems (basically everything except Windows) we may work
-// either with the file itself or its target in case it's a symbolic link, as
-// determined by wxFileName::ShouldFollowLink(). StatAny() can be used to stat
-// the appropriate file with an extra twist that it also works (by following
-// the symlink by default) when there is no wxFileName object at all, as is the
-// case in static methods.
+// either with the file itself or its target if it's a symbolic link and we
+// should dereference it, as determined by wxFileName::ShouldFollowLink() and
+// the absence of the wxFILE_EXISTS_NO_FOLLOW flag. StatAny() can be used to
+// stat the appropriate file with an extra twist that it also works when there
+// is no wxFileName object at all, as is the case in static methods.
// Private implementation, don't call directly, use one of the overloads below.
-bool DoStatAny(wxStructStat& st, wxString path, const wxFileName* fn)
+bool DoStatAny(wxStructStat& st, wxString path, bool dereference)
{
// We need to remove any trailing slashes from the path because they could
// interfere with the symlink following decision: even if we use lstat(),
// path and not for the last path element itself.
while ( wxEndsWithPathSeparator(path) )
- path.RemoveLast();
+ {
+ const size_t posLast = path.length() - 1;
+ if ( !posLast )
+ {
+ // Don't turn "/" into empty string.
+ break;
+ }
- int ret = !fn || fn->ShouldFollowLink() ? wxStat(path, &st)
- : wxLstat(path, &st);
+ path.erase(posLast);
+ }
+
+ int ret = dereference ? wxStat(path, &st) : wxLstat(path, &st);
return ret == 0;
}
// Overloads to use for a case when we don't have wxFileName object and when we
// do have one.
inline
-bool StatAny(wxStructStat& st, const wxString& path)
+bool StatAny(wxStructStat& st, const wxString& path, int flags)
{
- return DoStatAny(st, path, NULL);
+ return DoStatAny(st, path, !(flags & wxFILE_EXISTS_NO_FOLLOW));
}
inline
bool StatAny(wxStructStat& st, const wxFileName& fn)
{
- return DoStatAny(st, fn.GetFullPath(), &fn);
+ return DoStatAny(st, fn.GetFullPath(), fn.ShouldFollowLink());
}
#endif // !__WIN32__
namespace
{
-// Flags for wxFileSystemObjectExists() asking it to check for:
-enum
-{
- wxFileSystemObject_File = 1, // file existence
- wxFileSystemObject_Dir = 2, // directory existence
- wxFileSystemObject_Other = 4, // existence of something else, e.g.
- // device, socket, FIFO under Unix
- wxFileSystemObject_Any = 7 // existence of anything at all
-};
-
#if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
void RemoveTrailingSeparatorsFromPath(wxString& strPath)
#endif // __WINDOWS__ || __OS2__
bool
-wxFileSystemObjectExists(const wxString& path, int flags,
- const wxFileName* fn = NULL)
+wxFileSystemObjectExists(const wxString& path, int flags)
{
- wxUnusedVar(fn); // It's only used under Unix
// Should the existence of file/directory with this name be accepted, i.e.
// result in the true return value from this function?
- const bool acceptFile = (flags & wxFileSystemObject_File) != 0;
- const bool acceptDir = (flags & wxFileSystemObject_Dir) != 0;
+ const bool acceptFile = (flags & wxFILE_EXISTS_REGULAR) != 0;
+ const bool acceptDir = (flags & wxFILE_EXISTS_DIR) != 0;
wxString strPath(path);
// We consider that the path must exist if we get a sharing violation for
// it but we don't know what is it in this case.
if ( rc == ERROR_SHARING_VIOLATION )
- return flags & wxFileSystemObject_Other;
+ return flags & wxFILE_EXISTS_ANY;
// Any other error (usually ERROR_PATH_NOT_FOUND), means there is nothing
// there.
return false;
#else // Non-MSW, non-OS/2
wxStructStat st;
- if ( !DoStatAny(st, strPath, fn) )
+ if ( !StatAny(st, strPath, flags) )
return false;
if ( S_ISREG(st.st_mode) )
return acceptFile;
if ( S_ISDIR(st.st_mode) )
return acceptDir;
-
- return flags & wxFileSystemObject_Other;
+ if ( S_ISLNK(st.st_mode) )
+ return (flags & wxFILE_EXISTS_SYMLINK) != 0;
+ if ( S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode) )
+ return (flags & wxFILE_EXISTS_DEVICE) != 0;
+ if ( S_ISFIFO(st.st_mode) )
+ return (flags & wxFILE_EXISTS_FIFO) != 0;
+ if ( S_ISSOCK(st.st_mode) )
+ return (flags & wxFILE_EXISTS_SOCKET) != 0;
+
+ return flags & wxFILE_EXISTS_ANY;
#endif // Platforms
}
bool wxFileName::FileExists() const
{
- return wxFileSystemObjectExists(GetFullPath(), wxFileSystemObject_File, this);
+ int flags = wxFILE_EXISTS_REGULAR;
+ if ( !ShouldFollowLink() )
+ flags |= wxFILE_EXISTS_NO_FOLLOW;
+
+ return wxFileSystemObjectExists(GetFullPath(), flags);
}
/* static */
bool wxFileName::FileExists( const wxString &filePath )
{
- return wxFileSystemObjectExists(filePath, wxFileSystemObject_File);
+ return wxFileSystemObjectExists(filePath, wxFILE_EXISTS_REGULAR);
}
bool wxFileName::DirExists() const
{
- return wxFileSystemObjectExists(GetPath(), wxFileSystemObject_Dir, this);
+ int flags = wxFILE_EXISTS_DIR;
+ if ( !ShouldFollowLink() )
+ flags |= wxFILE_EXISTS_NO_FOLLOW;
+
+ return Exists(GetFullPath(), flags);
}
/* static */
bool wxFileName::DirExists( const wxString &dirPath )
{
- return wxFileSystemObjectExists(dirPath, wxFileSystemObject_Dir);
+ return wxFileSystemObjectExists(dirPath, wxFILE_EXISTS_DIR);
}
-bool wxFileName::Exists() const
+bool wxFileName::Exists(int flags) const
{
- return wxFileSystemObjectExists(GetFullPath(), wxFileSystemObject_Any, this);
+ // Notice that wxFILE_EXISTS_NO_FOLLOW may be specified in the flags even
+ // if our DontFollowLink() hadn't been called and we do honour it then. But
+ // if the user took the care of calling DontFollowLink(), it is always
+ // taken into account.
+ if ( !ShouldFollowLink() )
+ flags |= wxFILE_EXISTS_NO_FOLLOW;
+
+ return wxFileSystemObjectExists(GetFullPath(), flags);
}
/* static */
-bool wxFileName::Exists(const wxString& path)
+bool wxFileName::Exists(const wxString& path, int flags)
{
- return wxFileSystemObjectExists(path, wxFileSystemObject_Any);
+ return wxFileSystemObjectExists(path, flags);
}
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff