Mercurial > urweb

changeset 1343:0a2b630f2463

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Enforce character constraints on source filenames
author Adam Chlipala <adam@chlipala.net>
date Thu, 16 Dec 2010 09:59:05 -0500
parents 78fe9841c39d
children 660a2715e2bd
files src/compiler.sml
diffstat 1 files changed, 13 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/src/compiler.sml	Wed Dec 15 09:42:35 2010 -0500
+++ b/src/compiler.sml	Thu Dec 16 09:59:05 2010 -0500
@@ -794,7 +794,19 @@
 
                   val anyErrors = ref false
                   fun checkErrors () = anyErrors := (!anyErrors orelse ErrorMsg.anyErrors ())
-                  fun nameOf fname = capitalize (OS.Path.file fname)
+                  fun nameOf fname =
+                      let
+                          val fname = OS.Path.file fname
+                          val fst = if size fname = 0 then #"!" else String.sub (fname, 0)
+                      in
+                          if not (Char.isAlpha fst) then
+                              ErrorMsg.error ("Filename doesn't start with letter: " ^ fname)
+                          else if CharVector.exists (fn ch => not (Char.isAlphaNum ch) andalso ch <> #"_") fname then
+                              ErrorMsg.error ("Filename contains a character that isn't alphanumeric or underscore: " ^ fname)
+                          else
+                              ();
+                          capitalize fname
+                      end
 
                   fun parseFfi fname =
                       let