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#!/usr/bin/perl
# gen.pl -- generate static files for perlisdead.org
use 5.010;
use strict;
use warnings;
use experimental 'switch';
use File::Copy;
use FindBin '$Bin';
use Getopt::Std;
# Parse command-line options
my %opt;
$Getopt::Std::STANDARD_HELP_VERSION = 1;
getopts('d', \%opt);
sub main::HELP_MESSAGE {
print <<HELP;
usage: $0 [-d]
-d enable debug messages
HELP
}
sub main::VERSION_MESSAGE {}
# Change directory to script path
chdir $Bin;
# Generate index.html
mkdir 'out' if ! -d 'out';
open my $src, '<', 'src/index.html' or die "Could not open < src/index.html: $!";
open my $out, '>', 'out/index.html.tmp' or die "Could not open > out/index.html.tmp: $!";
for (<$src>) {
when (/^\.inc (.*)/) {
open my $h, '<', "inc/$1" or do {
warn "Could not open inc/$1: $!";
next;
};
print STDERR "INCLUDE: $_\n" if $opt{d};
print $out $_ while <$h>;
close $h;
}
when (/^\.eval (.*)/) {
print STDERR "EVAL: $1\n" if $opt{d};
{
no strict; no warnings; no experimental;
select $out;
eval $1;
select STDOUT;
warn $@ if $@;
}
}
when (/^\.run (.*)/) {
open my $h, '<', "run/$1" or do {
warn "Could not open run/$1: $!";
next;
};
print STDERR "RUN: $1\n" if $opt{d};
my $c = do { local $/; <$h> };
close $h;
{
no strict; no warnings; no experimental;
local $0 = "run/$1";
select $out;
eval $c;
select STDOUT;
warn $@ if $@;
}
# I guess you *could* just run the script in a separate process...
}
default {
print $out $_;
}
}
close $out;
close $src;
# Rename temporary file
move 'out/index.html.tmp' => 'out/index.html';
# Copy modified static files
opendir $src, 'src' or die "Could not open directory src: $!";
opendir $out, 'out' or die "Could not open directory src: $!";
my %src = map { ($_, (stat "src/$_")[9]||0) } grep { not /^\./ or /^index\.html$/ } readdir $src;
my %out = map { ($_, (stat "out/$_")[9]||0) } grep { not /^\./ or /^index\.html$/ } readdir $out;
for (keys %src) {
no warnings 'uninitialized';
if ($src{$_} > $out{$_}) {
print STDERR "COPY: src/$_ => out/$_\n" if $opt{d};
copy "src/$_" => "out/$_";
}
}
closedir $out;
closedir $src;
print STDERR "DONE\n" if $opt{d};
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