1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
#!/usr/bin/env perl
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
=begin comment
This script converts an nroff file to curldown
Example: cd2nroff [options] <file.md> > <file.3>
Note: when converting .nf sections, this tool does not know if the
section is code or just regular quotes. It then assumes and uses ~~~c
for code.
=end comment
=cut
my $nroff2cd = "0.1"; # to keep check
sub single {
my ($f)=@_;
open(F, "<:crlf", "$f") ||
return 1;
my $line;
my $title;
my $section;
my $source;
my @seealso;
my @desc;
my $header; # non-zero when TH is passed
my $quote = 0; # quote state
while(<F>) {
$line++;
my $d = $_;
if($_ =~ /^.\\\"/) {
# a comment we can ignore
next;
}
if(!$header) {
if($d =~ /.so (.*)/) {
# this is basically an include, so do that
my $f = $1;
# remove leading directory
$f =~ s/(.*?\/)//;
close(F);
open(F, "<:crlf", "$f") || return 1;
}
if($d =~ /^\.TH ([^ ]*) (\d) \"(.*?)\" ([^ \n]*)/) {
# header, this needs to be the first thing after leading comments
$title = $1;
$section = $2;
# date is $3
$source = $4;
# if there are enclosing quotes around source, remove them
$source =~ s/[\"\'](.*)[\"\']\z/$1/;
$header = 1;
print <<HEAD
---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: $title
Section: $section
Source: $source
HEAD
;
}
next;
}
if($quote) {
if($d =~ /^\.SH/) {
#end of quote without an .fi
$quote = 0;
push @desc, "~~~\n";
}
elsif($d =~ /^\.fi/) {
#end of quote
$quote = 0;
push @desc, "~~~\n";
next;
}
else {
# double-backslashes converted to single ones
$d =~ s/\\\\/\\/g;
push @desc, $d;
next;
}
}
if($d =~ /^\.SH (.*)/) {
my $word = $1;
# if there are enclosing quotes, remove them first
$word =~ s/[\"\'](.*)[\"\']\z/$1/;
if($word eq "SEE ALSO") {
# we just slurp up this section
next;
}
push @desc, "\n# $word\n\n";
}
elsif($d =~ /^\.(RS|RE)/) {
# ignore these
}
elsif($d =~ /^\.IP (.*)/) {
my $word = $1;
# if there are enclosing quotes, remove them first
$word =~ s/[\"\'](.*)[\"\']\z/$1/;
push @desc, "\n## $word\n\n";
}
elsif($d =~ /^\.IP/) {
# .IP with no text we just skip
}
elsif($d =~ /^\.BR (.*)/) {
# only used for SEE ALSO
my $word = $1;
# remove trailing comma
$word =~ s/,\z//;
for my $s (split(/,/, $word)) {
# remove all double quotes
$s =~ s/\"//g;
# tream leading whitespace
$s =~ s/^ +//g;
push @seealso, $s;
}
}
elsif($d =~ /^\.I (.*)/) {
push @desc, "*$1*\n";
}
elsif($d =~ /^\.B (.*)/) {
push @desc, "**$1**\n";
}
elsif($d =~ /^\.nf/) {
push @desc, "~~~c\n";
$quote = 1;
}
else {
# embolden
$d =~ s/\\fB(.*?)\\fP/**$1**/g;
# links to "curl.*()" are left bare since cd2nroff handles them
# specially
$d =~ s/\\fI(curl.*?\(3\))\\fP/$1/ig;
# emphasize
$d =~ s/\\fI(.*?)\\fP/*$1*/g;
# emphasize on a split line
$d =~ s/\\fI/*/g;
# bold on a split line
$d =~ s/\\fB/**/g;
# remove backslash amp
$d =~ s/\\&//g;
# remove backslashes
$d =~ s/\\//g;
# fix single quotes
$d =~ s/\(aq/'/g;
# fix double quotes
$d =~ s/\(dq/\"/g;
push @desc, $d;
}
}
close(F);
print "See-also:\n";
for my $s (sort @seealso) {
print " - $s\n" if($s);
}
print "---\n";
print @desc;
return !$header;
}
exit single($ARGV[0]);
|
