[~bandali/bndl.org] / txt2html

#!/usr/bin/env perl
# txt2html --- simple script to convert my site's txt files to html

# Copyright (C) 2014-2021 all contributors <meta@public-inbox.org>
# Copyright (c) 2021 Amin Bandali <bandali@gnu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# This simple script borrows from the wonderful `txt2pre' from
# public-inbox.git, under AGPLv3+, with a few additions of my own.


use strict;
use warnings 'all';
use Getopt::Long;

my $opt_lang = 'en';
my $opt_index;
GetOptions ('lang=s' => \$opt_lang,
            'index' => \$opt_index)
    or die("bad command line arguments\n");

my $link_re =
    qr{([\('!])?\b((?:ftps?|https?|nntps?|imaps?|s?news|gopher)://
       [\@:\w\.-]+(?:/
         (?:[a-z0-9\-\._~!\$\&\';\(\)\*\+,;=:@/%]*)
         (?:\?[a-z0-9\-\._~!\$\&\';\(\)\*\+,;=:@/%]+)?
         (?:\#[a-z0-9\-\._~!\$\&\';\(\)\*\+,;=:@/%\?]+)?
       )?
    )}xi;

my %pairs = (
    "(" => qr/(\)[\.,;\+]?)\z/, # Markdown (,), Ruby (+) (, for arrays)
    "'" => qr/('[\.,;\+]?)\z/, # Perl / Ruby
    "!" => qr/(![\.,;\+]?)\z/, # Perl / Ruby
);

my %html_map = (
    '&' => '&amp;',
    '<' => '&lt;',
    '>' => '&gt;',
    # '"' => '&quot;',
    # "'" => '&#39;',
);

sub html_esc {
    my ($s) = @_;
    $s =~ s/([&<>])/$html_map{$1}/sge;
    $s;
}

sub linkify {
    my ($s) = @_;
    $s =~ s^$link_re^
        my $beg = $1 || '';
        my $url = $2;
        my $end = '';

        # it's fairly common to end URLs in messages with
        # '.', ',' or ';' to denote the end of a statement;
        # assume the intent was to end the statement/sentence
        # in English
        if (defined(my $re = $pairs{$beg})) {
            if ($url =~ s/$re//) {
                $end = $1;
            }
        } elsif ($url =~ s/(\))?([\.,;])\z//) {
            $end = $2;
            # require ')' to be paired with '('
            if (defined $1) { # ')'
                if (index($url, '(') < 0) {
                    $end = ")$end";
                } else {
                    $url .= ')';
                }
            }
        } elsif ($url !~ /\(/ && $url =~ s/\)\z//) {
            $end = ')';
        }

        $beg . "<a href=\"$url\">$url</a>" . $end;
    ^geo;
    $s;
}


my $txt = do { local $/; <STDIN> };

my $title = html_esc($txt =~ /\A([^\n]+)/);
$title =~ s/^\s+|\s+$//g;
if ($opt_lang eq 'fa') {
    $title .= ' &mdash; بندعلی' if $title !~ /بندعلی/;
} else {
    $title .= ' &mdash; bandali' if $title !~ /bandali/;
}

my ($upd, $pub, $url) = $txt =~ /(.*)\r?\n(.*)\r?\n(.*)\r?\n?\z/;
($upd) = $upd =~ /(?:updated|ویرایش): (.*)/ if $upd;
($pub) = $pub =~ /(?:published|انتشار): (.*)/ if $pub;
($url) = $url =~ /(?:plain text|متن ساده): (.*)/ if $url;
$url = 'https://bndl.org/bandali-cv.txt'
    if (!$url and $title =~ /curriculum vitae/);
$url = html_esc($url) if $url;

$txt = linkify(html_esc($txt));

print("<!doctype html>",
      qq(<html lang="$opt_lang"),
      $opt_lang eq 'fa' ? ' dir="rtl"' : '',
      ">",
      qq(<head>
<meta http-equiv="Content-Type"
content="text/html; charset=utf-8" />\n),
      "<title>$title</title>\n",
      qq(<link rel="icon" href="data:,">\n),
      $url ? qq(<link rel="alternate" href="$url"
title="plain text" type="text/plain" />\n) : '',
      ($opt_index and $opt_lang eq 'en')
      ? qq(<link rel="alternate" href="https://bndl.org/fa/"
hreflang="fa" title="persian" />\n)
      : ($opt_index and $opt_lang eq 'fa')
      ? qq(<link rel="alternate" href="https://bndl.org/"
hreflang="en" title="english" />\n)
      : '',
      qq(<style>\@media(prefers-color-scheme:dark){
body{background:#1c1c1c;color:white;}a:link{color:#acdeff;}
a:visited{color:#f8f;}a:active{color:#e00;}}),
      $opt_lang eq 'fa'
      ? qq(\n\@font-face{font-family:sahel;font-weight:normal;
src:local('Sahel WOL'),local('Sahel'),
url('sahel.woff2')format('woff2');}pre{font-family:sahel})
      : '',
      "</style>\n",
      "</head><body><pre>$txt</pre></body></html>\n");
STDOUT->flush;
Commit	Line	Data
d3adcff4 AB	1	#!/usr/bin/env perl
	2	# txt2html --- simple script to convert my site's txt files to html
	3
	4	# Copyright (C) 2014-2021 all contributors <meta@public-inbox.org>
	5	# Copyright (c) 2021 Amin Bandali <bandali@gnu.org>
	6	#
	7	# This program is free software: you can redistribute it and/or modify
	8	# it under the terms of the GNU Affero General Public License as
	9	# published by the Free Software Foundation, either version 3 of the
	10	# License, or (at your option) any later version.
	11	#
	12	# This program is distributed in the hope that it will be useful,
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	# GNU Affero General Public License for more details.
	16	#
	17	# You should have received a copy of the GNU Affero General Public License
	18	# along with this program. If not, see <https://www.gnu.org/licenses/>.
	19
	20	# This simple script borrows from the wonderful `txt2pre' from
	21	# public-inbox.git, under AGPLv3+, with a few additions of my own.
	22
	23
	24	use strict;
	25	use warnings 'all';
e02deb23 AB	26	use Getopt::Long;
	27
	28	my $opt_lang = 'en';
ce2fcdbc AB	29	my $opt_index;
	30	GetOptions ('lang=s' => \$opt_lang,
	31	'index' => \$opt_index)
e02deb23	32	or die("bad command line arguments\n");
d3adcff4 AB	33
	34	my $link_re =
	35	qr{([\('!])?\b((?:ftps?\|https?\|nntps?\|imaps?\|s?news\|gopher)://
	36	[\@:\w\.-]+(?:/
	37	(?:[a-z0-9\-\._~!\$\&\';\(\)\\+,;=:@/%])
	38	(?:\?[a-z0-9\-\._~!\$\&\';\(\)\*\+,;=:@/%]+)?
	39	(?:\#[a-z0-9\-\._~!\$\&\';\(\)\*\+,;=:@/%\?]+)?
	40	)?
	41	)}xi;
	42
	43	my %pairs = (
	44	"(" => qr/(\)[\.,;\+]?)\z/, # Markdown (,), Ruby (+) (, for arrays)
	45	"'" => qr/('[\.,;\+]?)\z/, # Perl / Ruby
	46	"!" => qr/(![\.,;\+]?)\z/, # Perl / Ruby
	47	);
	48
	49	my %html_map = (
	50	'&' => '&',
	51	'<' => '<',
	52	'>' => '>',
	53	# '"' => '"',
	54	# "'" => ''',
	55	);
	56
	57	sub html_esc {
	58	my ($s) = @_;
	59	$s =~ s/([&<>])/$html_map{$1}/sge;
	60	$s;
	61	}
	62
	63	sub linkify {
	64	my ($s) = @_;
	65	$s =~ s^$link_re^
	66	my $beg = $1 \|\| '';
	67	my $url = $2;
	68	my $end = '';
	69
	70	# it's fairly common to end URLs in messages with
	71	# '.', ',' or ';' to denote the end of a statement;
	72	# assume the intent was to end the statement/sentence
	73	# in English
	74	if (defined(my $re = $pairs{$beg})) {
	75	if ($url =~ s/$re//) {
	76	$end = $1;
	77	}
	78	} elsif ($url =~ s/(\))?([\.,;])\z//) {
	79	$end = $2;
	80	# require ')' to be paired with '('
	81	if (defined $1) { # ')'
	82	if (index($url, '(') < 0) {
	83	$end = ")$end";
	84	} else {
	85	$url .= ')';
	86	}
	87	}
	88	} elsif ($url !~ /\(/ && $url =~ s/\)\z//) {
	89	$end = ')';
	90	}
	91
	92	$beg . "<a href=\"$url\">$url</a>" . $end;
	93	^geo;
	94	$s;
	95	}
	96
97
98	my $txt = do { local $/; <STDIN> };
212ec2e6	99
d3adcff4 AB	100	my $title = html_esc($txt =~ /\A([^\n]+)/);
d3adcff4 AB	101	$title =~ s/^\s+\|\s+$//g;
e02deb23	102	if ($opt_lang eq 'fa') {
d3adcff4 AB	103	$title .= ' — بندعلی' if $title !~ /بندعلی/;
	104	} else {
	105	$title .= ' — bandali' if $title !~ /bandali/;
	106	}
212ec2e6 AB	107
	108	my ($upd, $pub, $url) = $txt =~ /(.)\r?\n(.)\r?\n(.*)\r?\n?\z/;
	109	($upd) = $upd =~ /(?:updated\|ویرایش): (.*)/ if $upd;
	110	($pub) = $pub =~ /(?:published\|انتشار): (.*)/ if $pub;
	111	($url) = $url =~ /(?:plain text\|متن ساده): (.*)/ if $url;
ce2fcdbc AB	112	$url = 'https://bndl.org/bandali-cv.txt'
	113	if (!$url and $title =~ /curriculum vitae/);
	114	$url = html_esc($url) if $url;
d3adcff4 AB	115
	116	$txt = linkify(html_esc($txt));
	117
ce2fcdbc	118	print("<!doctype html>",
e02deb23	119	qq(<html lang="$opt_lang"),
ce2fcdbc AB	120	$opt_lang eq 'fa' ? ' dir="rtl"' : '',
	121	">",
	122	qq(<head>
	123	<meta http-equiv="Content-Type"
	124	content="text/html; charset=utf-8" />\n),
	125	"<title>$title</title>\n",
4236f6db	126	qq(<link rel="icon" href="data:,">\n),
ce2fcdbc AB	127	$url ? qq(<link rel="alternate" href="$url"
	128	title="plain text" type="text/plain" />\n) : '',
	129	($opt_index and $opt_lang eq 'en')
	130	? qq(<link rel="alternate" href="https://bndl.org/fa/"
	131	hreflang="fa" title="persian" />\n)
	132	: ($opt_index and $opt_lang eq 'fa')
	133	? qq(<link rel="alternate" href="https://bndl.org/"
	134	hreflang="en" title="english" />\n)
	135	: '',
19580079 AB	136	qq(<style>\@media(prefers-color-scheme:dark){
	137	body{background:#1c1c1c;color:white;}a:link{color:#acdeff;}
	138	a:visited{color:#f8f;}a:active{color:#e00;}}),
e02deb23	139	$opt_lang eq 'fa'
19580079	140	? qq(\n\@font-face{font-family:sahel;font-weight:normal;
d3adcff4	141	src:local('Sahel WOL'),local('Sahel'),
19580079	142	url('sahel.woff2')format('woff2');}pre{font-family:sahel})
d3adcff4	143	: '',
19580079	144	"</style>\n",
ce2fcdbc	145	"</head><body><pre>$txt</pre></body></html>\n");
d3adcff4	146	STDOUT->flush;