locals make math math.bitwise namespaces sequences
specialized-arrays system threads tr windows windows.errors
windows.handles windows.kernel32 windows.shell32 windows.time
-windows.types ;
+windows.types fry ;
SPECIALIZED-ARRAY: ushort
IN: io.files.windows
ERROR: invalid-file-size n ;
-: handle>file-size ( handle -- n )
+: (handle>file-size) ( handle -- n )
0 ulonglong <ref> [ GetFileSizeEx win32-error=0/f ] keep ulonglong deref ;
+! Returns T{ windows-error f 1 "Incorrect function." } if stream is not seekable
+: handle>file-size ( handle -- n/f )
+ '[ _ (handle>file-size) ]
+ [ dup n>> 1 = [ drop f ] [ rethrow ] if ] recover ;
+
ERROR: seek-before-start n ;
: set-seek-ptr ( n handle -- )
} case ;
M: windows can-seek-handle? ( handle -- ? )
- handle>> handle>file-size zero? not ;
+ handle>> handle>file-size >boolean ;
M: windows handle-length ( handle -- n/f )
- handle>> handle>file-size [ f ] when-zero ;
+ handle>> handle>file-size
+ dup { 0 f } member? [ drop f ] when ;
: file-error? ( n -- eof? )
zero? [