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Give pointers to runtime Unicode changes.
[perl5.git] / regen.pl
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1#!/usr/bin/perl -w
2use strict;
3use vars qw($Is_W32 $Is_OS2 $Is_Cygwin $Is_NetWare $Needs_Write);
4use Config; # Remember, this is running using an existing perl
5
6# Common functions needed by the regen scripts
7
8$Is_W32 = $^O eq 'MSWin32';
9$Is_OS2 = $^O eq 'os2';
10$Is_Cygwin = $^O eq 'cygwin';
11$Is_NetWare = $Config{osname} eq 'NetWare';
12if ($Is_NetWare) {
13 $Is_W32 = 0;
14}
15
16$Needs_Write = $Is_OS2 || $Is_W32 || $Is_Cygwin || $Is_NetWare;
17
18sub safer_unlink {
19 my @names = @_;
20 my $cnt = 0;
21
22 my $name;
23 foreach $name (@names) {
24 next unless -e $name;
25 chmod 0777, $name if $Needs_Write;
26 ( CORE::unlink($name) and ++$cnt
27 or warn "Couldn't unlink $name: $!\n" );
28 }
29 return $cnt;
30}
31
32sub safer_rename_silent {
33 my ($from, $to) = @_;
34
35 # Some dosish systems can't rename over an existing file:
36 safer_unlink $to;
37 chmod 0600, $from if $Needs_Write;
38 rename $from, $to;
39}
40
41sub safer_rename {
42 my ($from, $to) = @_;
43 safer_rename_silent($from, $to) or die "renaming $from to $to: $!";
44}
451;