3 use vars qw($Needs_Write $Verbose @Changed $TAP);
8 # Common functions needed by the regen scripts
10 $Needs_Write = $^O eq 'cygwin' || $^O eq 'os2' || $^O eq 'MSWin32';
13 @ARGV = grep { not($_ eq '-q' and $Verbose = -1) }
14 grep { not($_ eq '--tap' and $TAP = 1) }
15 grep { not($_ eq '-v' and $Verbose = 1) } @ARGV;
18 print STDOUT "Changed: @Changed\n" if @Changed;
26 foreach $name (@names) {
28 chmod 0777, $name if $Needs_Write;
29 ( CORE::unlink($name) and ++$cnt
30 or warn "Couldn't unlink $name: $!\n" );
35 sub safer_rename_silent {
38 # Some dosish systems can't rename over an existing file:
40 chmod 0600, $from if $Needs_Write;
44 sub rename_if_different {
48 my $not = compare($from, $to) ? 'not ' : '';
49 print STDOUT $not . "ok - $0 $to\n";
53 if (compare($from, $to) == 0) {
54 warn "no changes between '$from' & '$to'\n" if $Verbose > 0;
58 warn "changed '$from' to '$to'\n" if $Verbose > 0;
59 push @Changed, $to unless $Verbose < 0;
60 safer_rename_silent($from, $to) or die "renaming $from to $to: $!";
63 # Saf*er*, but not totally safe. And assumes always open for output.
65 my ($name, $final_name) = @_;
67 unlink $name or die "$name exists but can't unlink: $!";
70 open $fh, ">$name" or die "Can't create $name: $!";
71 *{$fh}->{name} = $name;
72 if (defined $final_name) {
73 *{$fh}->{final_name} = $final_name;
74 *{$fh}->{lang} = ($final_name =~ /\.(?:c|h|tab|act)$/ ? 'C' : 'Perl');
82 close $fh or die 'Error closing ' . *{$fh}->{name} . ": $!";
87 die "Missing language argument" unless defined $args{lang};
88 die "Unknown language argument '$args{lang}'"
89 unless $args{lang} eq 'Perl' or $args{lang} eq 'C';
90 my $style = $args{style} ? " $args{style} " : ' ';
92 my $raw = "-*- buffer-read-only: t -*-\n";
95 $raw .= "\n $args{file}\n";
97 if ($args{copyright}) {
99 local $Text::Wrap::columns = 75;
100 $raw .= wrap(' ', ' ', <<"EOM") . "\n";
102 Copyright (C) @{$args{copyright}} by\0Larry\0Wall\0and\0others
104 You may distribute under the terms of either the GNU General Public
105 License or the Artistic License, as specified in the README file.
109 $raw .= "!!!!!!! DO NOT EDIT THIS FILE !!!!!!!\n";
112 $raw .= "This file is built by $args{by}";
114 my @from = ref $args{from} eq 'ARRAY' ? @{$args{from}} : $args{from};
115 my $last = pop @from;
117 $raw .= ' from ' . join (', ', @from) . " and $last";
119 $raw .= " from $last";
124 $raw .= "Any changes made here will be lost!\n";
125 $raw .= $args{final} if $args{final};
127 local $Text::Wrap::columns = 78;
128 my $cooked = $args{lang} eq 'Perl'
129 ? wrap('# ', '# ', $raw) . "\n" : wrap('/* ', $style, $raw) . " */\n\n";
130 $cooked =~ tr/\0/ /; # Don't break Larry's name etc
131 $cooked =~ s/ +$//mg; # Remove all trailing spaces
135 sub read_only_bottom_close_and_rename {
136 my ($fh, $sources) = @_;
137 my $name = *{$fh}->{name};
138 my $lang = *{$fh}->{lang};
139 die "No final name specified at open time for $name"
140 unless *{$fh}->{final_name};
143 $comment = "Generated from:\n";
144 foreach my $file (sort @$sources) {
145 my $digest = digest($file);
146 $comment .= "$digest $file\n";
149 $comment .= "ex: set ro:";
151 if ($lang eq 'Perl') {
152 $comment =~ s/^/# /mg;
154 $comment =~ s/^/ * /mg;
155 $comment =~ s! \* !/* !;
158 print $fh "\n$comment\n";
160 rename_if_different($name, *{$fh}->{final_name});
165 $t .= "\t" x ($l - (length($t) + 1) / 8);
171 # Need to defer loading this, as the main regen scripts work back to 5.004,
172 # and likely we don't even have this module on every 5.8 install yet:
176 open FH, "$file" or die "Can't open $file: $!";
178 close FH or die "Can't close $file: $!";
179 return Digest::SHA::sha256_hex($raw);