fix references to implicit claset and simpset;

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/Tools/fixclasimp	Mon Nov 03 11:48:56 1997 +0100
@@ -0,0 +1,42 @@
+#!/bin/bash
+#
+# $Id$
+#
+# DESCRIPTION: fix references to implicit claset and simpset
+
+
+## diagnostics
+
+PRG=$(basename $0)
+
+function usage()
+{
+  echo
+  echo "Usage: $PRG [FILES|DIRS...]"
+  echo
+  echo "  Recursively find .ML files, fixing references to"
+  echo "  implicit claset and simpset:"
+  echo
+  echo "  FIXME"
+  echo
+  echo "  Renames old versions of FILES by appending \"~~\"."
+  echo
+  exit 1
+}
+
+
+## process command line
+
+[ $# -eq 0 -o "$1" = "-?" ] && usage
+
+SPECS="$@"; shift $#
+
+
+## main
+
+PERL=$(type -path perl)
+if [ -z $PERL ]; then
+  echo "$PRG fatal error: no perl!?"
+else
+  find $SPECS -name \*.ML -print | xargs $PERL $ISABELLE_HOME/lib/scripts/fixclasimp.pl
+fi

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/scripts/fixclasimp.pl	Mon Nov 03 11:48:56 1997 +0100
@@ -0,0 +1,46 @@
+#
+# $Id$
+#
+# fixclasimp.pl - fix references to implicit claset and simpset
+#
+
+sub fixclasimp {
+    my ($file) = @_;
+
+    open (FILE, $file) || die $!;
+    undef $/; $text = <FILE>; $/ = "\n";         # slurp whole file
+    close FILE || die $!;
+
+    $_ = $text;
+
+    s/set_current_thy\s"([^"]*)"/context $1.thy/sg;
+
+    s/!\s*simpset/simpset()/sg;
+    s/simpset\s*:=/simpset_ref() :=/sg;
+    s/simpset_of\s*"([^"]*)"/simpset_of $1.thy/sg;
+
+    s/!\s*claset/claset()/sg;
+    s/claset\s*:=/claset_ref() :=/sg;
+    s/claset_of\s*"([^"]*)"/claset_of $1.thy/sg;
+
+
+    $result = $_;
+
+    if ($text ne $result) {
+	print STDERR "fixing $file\n";
+        if (! -f "$file~~") {
+	    rename $file, "$file~~" || die $!;
+        }
+	open (FILE, "> $file") || die $!;
+	print FILE $result;
+	close FILE || die $!;
+    }
+}
+
+
+## main
+
+foreach $file (@ARGV) {
+  eval { &fixclasimp($file); };
+  if ($@) { print STDERR "*** fixclasimp $file: ", $@, "\n"; }
+}