124 lines
2.6 KiB
Plaintext
124 lines
2.6 KiB
Plaintext
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#!/usr/bin/perl
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use strict;
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use warnings;
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use File::Which;
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use File::Path qw(make_path);
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use JSON;
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# Accept input on stdin regardless of whether the 'md2gemini' executable
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# is present, to avoid "Broken pipe" errors from mdBook.
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my $data;
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{
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local $/;
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undef $/;
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$data = <>;
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}
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if (! defined which 'md2gemini') {
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print "'md2gemini' not found in PATH; not building Gemini output\n";
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# We can't return non-zero here, as that would cause the entire
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# mdBook build process to fail.
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exit 0;
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}
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my $json = JSON->new->decode($data);
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my $sections = $json->{book}->{sections};
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# Create toc.gmi from SUMMARY.md
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my $leader;
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open(my $summary, '<', '../../src/SUMMARY.md')
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or die "Can't open SUMMARY.md for reading: $!\n";
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open(my $toc, '>', 'toc.gmi')
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or die "Can't open toc.gmi for writing: $!\n";
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print $toc "# Table of Contents\n\n";
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while (<$summary>) {
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if (/^(\s*)- \[([^\]]+)\]\(([^\)]+)\)/) {
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my $depth = $1;
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my $heading = $2;
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my $path = $3;
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if (length($depth) == 0) {
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$leader = '-';
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} else {
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$leader = '-' x (1 + (length($depth) / 3));
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}
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$path =~ s/\.md$/.gmi/;
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print $toc "=> " . $path . " " . $leader . " " . $heading . "\n";
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}
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}
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close($summary)
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or die "Can't close SUMMARY.md after reading: $!\n";
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close($toc)
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or die "Can't close toc.gmi after writing: $!\n";
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# Create individual pages.
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foreach my $i (@$sections) {
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process_json($i);
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}
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exit 0;
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### Functions
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sub process_json {
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my $i = shift;
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my $type = ref($i);
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if ($type eq 'HASH') {
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if (defined $i->{content}) {
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process_content($i->{path},$i->{content});
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}
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if (defined $i->{Chapter}) {
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process_json($i->{Chapter});
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}
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if (defined $i->{sub_items}) {
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foreach my $j ($i->{sub_items}) {
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process_json($j);
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}
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}
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}
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if ($type eq 'ARRAY') {
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foreach my $j (@{$i}) {
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process_json($j);
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}
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}
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}
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sub process_content {
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my $path = shift;
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my $directory = $path;
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my $filename = $path;
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my $content = shift;
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my $fh;
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$directory =~ s|/[^/]+\.md$||;
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$filename =~ s|^.*/([^/]+)\.md$|$1.gmi|;
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make_path($directory);
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open($fh, "| md2gemini --links copy --md-links --ascii-table > " .
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$directory . '/' . $filename)
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or die "Can't open pipe to md2gemini: $!\n";
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print $fh $content;
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print $fh "\n\n" . "=> /toc.gmi Table of Contents" . "\n";
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close $fh
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or die "Can't close pipe to md2gemini: $!\n";
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}
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