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96 lines
2.1 KiB
96 lines
2.1 KiB
#!/usr/bin/env perl
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use strict;
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use warnings;
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use 5.10.0;
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use Cwd;
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use File::Basename;
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use Text::Markdown::Discount;
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# Enable html5 block-level tags:
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Text::Markdown::Discount::with_html5_tags();
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my $flags = Text::Markdown::Discount::MKD_EXTRA_FOOTNOTE();
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my $markdown = Text::Markdown::Discount->new;
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my $cwd = Cwd::getcwd();
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my $full_source = '';
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while (my $source = get_input()) {
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# A simple preprocessor:
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my ($basename, $dir) = fileparse($ARGV); # get path of target file
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chdir $dir;
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# XXX: temporarily disabled until code examples are updated:
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# $source =~ s{<!-- exec -->(.*?)<!-- end -->}{handle_block($1);}egs;
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chdir $cwd;
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$full_source .= "\n\n----\n\n" . $source;
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}
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print replace_some_stuff($markdown->markdown($full_source, $flags));
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sub get_input {
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local $/ = undef;
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my $source = <>;
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return $source;
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}
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sub handle_block {
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my ($block) = @_;
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my $cmd;
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if ($block =~ m/\$ (.*?)$/m) {
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$cmd = $1;
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} else {
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die "bogus cmd";
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}
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my $result = `$cmd`;
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# indent 4 spaces so we get a code block:
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$result =~ s/^/ /gm;
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return "<!-- exec -->\n\n \$ " . $cmd . "\n" . $result . "\n<!-- end -->";
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}
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# super cheeseball, man
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sub replace_some_stuff {
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my ($markup) = @_;
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# bold first "$ command" string in a code block
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# $markup =~ s{<code>(\$ .*?)$}{<code><b>$1</b>}gm;
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my @contents;
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# insert anchors in headers, accumulate a table of contents
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$markup =~ s{<(h[12])(.*?)>(.*?)</h[12]>}{
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my ($tag, $attributes, $text) = ($1, $2, $3);
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my $a_name = $text;
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$a_name =~ s/[^a-z]+/-/ig;
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$a_name =~ s/^-|-$//g;
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push @contents, make_contents_link($tag, $a_name, $text);
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"<$tag$attributes><a name=$a_name href=#$a_name>#</a> $text</$tag>";
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}iesg;
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my $contents_text = '<div class=contents>'
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. $markdown->markdown((join "\n", @contents), $flags)
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. '</div>';
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$markup =~ s/\{\{contents\}\}/$contents_text/g;
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return $markup;
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}
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# make an individual element of a markdown list
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sub make_contents_link {
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my ($tag, $a_name, $text) = @_;
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if ($tag eq 'h2') {
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return " * [$text](#$a_name)";
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} elsif ($tag eq 'h1') {
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return "* [$text](#$a_name)";
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}
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}
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