Implement RENAME-FILE

[pforth] / fth / file.fth

diff --git a/fth/file.fth b/fth/file.fth
index bc81f3a..5393392 100644 (file)
--- a/fth/file.fth
+++ b/fth/file.fth
@@ -50,6 +50,8 @@ private{
 create (LINE-TERMINATOR) \n c,
 : LINE-TERMINATOR ( -- c-addr u ) (line-terminator) 1 ;
 
 create (LINE-TERMINATOR) \n c,
 : LINE-TERMINATOR ( -- c-addr u ) (line-terminator) 1 ;
 

+-72 constant THROW_RENAME_FILE
+

 }private
 
 \ This treats \n, \r\n, and \r as line terminator.  Reading is done
 }private
 
 \ This treats \n, \r\n, and \r as line terminator.  Reading is done


@@ -85,4 +87,19 @@ create (LINE-TERMINATOR) \n c,
     THEN
 ;
 
     THEN
 ;
 

+: RENAME-FILE ( c-addr1 u1 c-addr2 u2 -- ior )
+    { a1 u1 a2 u2 | new }
+    \ Convert the file-names to C-strings by copying them after HERE
+    \ with trailing zeros added.
+    a1 here u1 move
+    0 here u1 chars + c!
+    here u1 1+ chars + to new
+    a2 new u2 move
+    0 new u2 chars + c!
+    here new (rename-file) 0=
+    IF 0
+    ELSE throw_rename_file
+    THEN
+;
+

 privatize
 privatize