changing file permissions ...

--- a/lib/scripts/fixheaders.pl	Wed Jul 06 00:08:57 2005 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,113 +0,0 @@
-#!/usr/bin/env perl -w
-#
-# $Id$
-# Author: Florian Haftmann, TUM
-#
-# DESCRIPTION: migrates theory header (of new-style theories) to non-deprecated syntax
-
-use strict;
-use File::Find;
-use File::Basename;
-use File::Copy;
-
-# configuration
-my @suffices = ('\.thy');
-my $backupsuffix = '~~';
-
-# migrator function
-sub fixheaders {
-
-    my ($file) = @_;
-
-    open(ISTREAM, $file) or die $!;
-    my @content = <ISTREAM>;
-    close ISTREAM or die $!;
-    my $content = join("", @content);
-    $_ = $content;
-    if (m!^theory!cgoms) {
-        my $prelude = $`;
-        my $thyheader = "theory";
-        $thyheader .= skip_wscomment();
-        if (m!\G(\S+)!cgoms) {
-            $thyheader .= $1;
-            $thyheader .= skip_wscomment();
-            if (m!\G(?:imports|=)!cgoms) {
-                $thyheader .= "imports";
-                $thyheader .= skip_wscomment() || " ";
-                while (m/\G(?!uses|files|begin|:)/cgoms && m!\G(?:[\w_]+|"[^"]+")!cgoms) {
-                    $thyheader .= $&;
-                    $thyheader .= skip_wscomment();
-                    if (m!\G\+!cgoms) {
-                        m!\G ?!cgoms;
-                    }
-                    $thyheader .= skip_wscomment();
-                }
-            }
-            if (m!\G(?:files|uses)!cgoms) {
-                $thyheader .= "uses";
-                $thyheader .= skip_wscomment();
-                while (m/\G(?!begin|:)/cgoms && m!\G(\("[^"]+"\)|"[^"]+"|[^"\s]+)!cgoms) {
-                    $thyheader .= $&;
-                    $thyheader .= skip_wscomment();
-                }
-            }
-
-            if (m!\G(?:begin|:)!cgoms) {
-                my $postlude = $';
-                if ($& eq ":") {
-                    $thyheader .= " ";
-                }
-                $thyheader .=  "begin";
-                my $newcontent = "$prelude$thyheader$postlude";
-                if ($content ne $newcontent) {
-                    print STDERR "fixing $file\n";
-                    my $backupfile = "$file$backupsuffix";
-                    if (! -f $backupfile) {
-                        rename $file, $backupfile or die $!;
-                    }
-                    open(OSTREAM, ">$file") or die $!;
-                    print OSTREAM $newcontent;
-                    close(OSTREAM) or die $!;
-                }
-            }
-        }
-    }
-
-}
-
-# utility functions
-sub skip_wscomment {
-    my $commentlevel = 0;
-    my @skipped = ();
-    while () {
-        if (m!\G\(\*!cgoms) {
-            push(@skipped, $&);
-            $commentlevel++;
-        } elsif ($commentlevel > 0) {
-            if (m!\G\*\)!cgoms) {
-                push(@skipped, $&);
-                $commentlevel--;
-            } elsif (m/\G(?:
-                        \*(?!\))|\((?!\*)|[^(*]
-                       )*/cgomsx) {
-                push(@skipped, $&);
-            } else {
-                die "probably incorrectly nested comment";
-            }
-        } elsif (m!\G\s+!cgoms) {
-            push(@skipped, $&);
-        } else {
-            return join('', @skipped);
-        }
-    }
-}
-
-# main
-foreach my $file (@ARGV) {
-    eval {
-        fixheaders($file);
-    };
-    if ($@) {
-        print STDERR "*** fixheaders $file: ", $@, "\n";
-    }
-}