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oddmuse/modules/markdown-converter.pl
2018-11-21 09:40:03 +01:00

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#! /usr/bin/perl
# Copyright (C) 2018 Alex Schroeder <alex@gnu.org>
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use v5.10;
use utf8;
AddModuleDescription('markdown-converter.pl', 'Markdown Convert');
our (%Action, @MyAdminCode, $q, $OpenPageName, %Page, @MyRules);
push(@MyAdminCode, \&MarkdownConvertMenu);
sub MarkdownConvertMenu {
my ($id, $menuref, $restref) = @_;
my $name = $id;
$name =~ s/_/ /g;
if ($id) {
push(@$menuref, ScriptLink('action=convert;id=' . $id, Ts('Help convert %s to Markdown', $name), 'convert'));
}
push(@$menuref, ScriptLink('action=conversion-candidates', Ts('List all non-Markdown pages'), 'convert'));
}
$Action{convert} = \&MarkdownConvert;
# some text that doesn't start and end with a space, or just one non-space
sub MarkdownConvertString {
my $c = shift;
return qr"([^\\$c \n][^\\$c\n]*[^\\$c \n]|[^\\$c \n])";
}
sub MarkdownConvert {
my $id = GetParam('id', '');
ValidIdOrDie($id);
print GetHeader('', Ts('Converting %s', $id), '');
$_ = GetPageContent($id);
s/^\{\{\{((?:.*\n)+?)\}\}\}$/```$1```/gm;
s/\{\{\{(.+?)\}\}\}/`$1`/gm;
my $s = MarkdownConvertString('*');
s/\*$s\*/**$1**/g;
# avoid URL schemas like http://example.org
$s = MarkdownConvertString('/');
s#(?<!:/)/$s/#*$1*#g;
s#(?<!:)//$s//#*$1*#g;
s/^# /1. /gm;
s/##(.*?)##/`$1`/g;
s/^(=+) *(.*?) ?=*$/'#' x length($1) . ' ' . $2/gme;
s!\[(https?://\S+) (.*?)\]![$2]($1)!g;
return DoEdit($id, "#MARKDOWN\n" . $_, 1); # preview
}
$Action{'conversion-candidates'} = \&MarkdownConversionCandidates;
sub MarkdownConversionCandidates {
# from Search
print GetHeader('', Ts('Candidates for Conversion to Markdown'));
print $q->start_div({-class=>'content'});
print $q->start_ol();
# from SearchTitleAndBody
my $regex = qr'^(?!#MARKDOWN)';
foreach my $id (Filtered($regex, AllPagesList())) {
my $name = NormalToFree($id);
my ($text) = PageIsUploadedFile($id); # set to mime-type if this is an uploaded file
local ($OpenPageName, %Page); # this is local!
if (not $text) { # not uploaded file, therefore allow searching of page body
OpenPage($id); # this opens a page twice if it is not uploaded, but that's ok
if ($Page{text} =~ /$regex/) {
my $action = 'action=convert;id=' . UrlEncode($id);
my $name = NormalToFree($id);
print $q->li(GetPageLink($id, $name) . ' '
. ScriptLink($action, Ts('Help convert %s to Markdown', $name)));
}
}
}
print $q->end_ol();
print $q->end_div();
PrintFooter();
}
push(@MyRules, \&MarkdownConvertRule);
sub MarkdownConvertRule {
if (pos == 0 and /\G#MARKDOWN\n/gc) {
return '';
}
return;
}