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1#!/usr/bin/env perl
2#***************************************************************************
3#                                  _   _ ____  _
4#  Project                     ___| | | |  _ \| |
5#                             / __| | | | |_) | |
6#                            | (__| |_| |  _ <| |___
7#                             \___|\___/|_| \_\_____|
8#
9# Copyright (C) 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
10#
11# This software is licensed as described in the file COPYING, which
12# you should have received as part of this distribution. The terms
13# are also available at https://curl.haxx.se/docs/copyright.html.
14#
15# You may opt to use, copy, modify, merge, publish, distribute and/or sell
16# copies of the Software, and permit persons to whom the Software is
17# furnished to do so, under the terms of the COPYING file.
18#
19# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20# KIND, either express or implied.
21#
22###########################################################################
23#
24# scan nroff pages to find basic syntactic problems such as unbalanced \f
25# codes or references to non-existing curl man pages.
26
27my $docsroot = $ARGV[0];
28
29if(!$docsroot || ($docsroot eq "-g")) {
30    print "Usage: nroff-scan.pl <docs root dir> [nroff files]\n";
31    exit;
32}
33
34
35shift @ARGV;
36
37my @f = @ARGV;
38
39my %manp;
40
41sub manpresent {
42    my ($man) = @_;
43    if($manp{$man}) {
44        return 1;
45    }
46    elsif(-r "$docsroot/$man" ||
47          -r "$docsroot/libcurl/$man" ||
48          -r "$docsroot/libcurl/opts/$man") {
49        $manp{$man}=1;
50        return 1;
51    }
52    return 0;
53}
54
55sub file {
56    my ($f) = @_;
57    open(F, "<$f") ||
58        die "no file";
59    my $line = 1;
60    while(<F>) {
61        chomp;
62        my $l = $_;
63        while($l =~ s/\\f(.)([^ ]*)\\f(.)//) {
64            my ($pre, $str, $post)=($1, $2, $3);
65            if($post ne "P") {
66                print STDERR "error: $f:$line: missing \\fP after $str\n";
67                $errors++;
68            }
69            if($str =~ /((libcurl|curl)([^ ]*))\(3\)/i) {
70                my $man = "$1.3";
71                if(!manpresent($man)) {
72                    print STDERR "error: $f:$line: refering to non-existing man page $man\n";
73                    $errors++;
74                }
75                if($pre ne "I") {
76                    print STDERR "error: $f:$line: use \\fI before $str\n";
77                    $errors++;
78                }
79            }
80        }
81        if($l =~ /(curl([^ ]*)\(3\))/i) {
82            print STDERR "error: $f:$line: non-referencing $1\n";
83            $errors++;
84        }
85        if($l =~ /^\.BR (.*)/) {
86            my $i= $1;
87            while($i =~ s/((lib|)curl([^ ]*)) *\"\(3\)(,|) *\" *//i ) {
88                my $man = "$1.3";
89                if(!manpresent($man)) {
90                    print STDERR "error: $f:$line: refering to non-existing man page $man\n";
91                    $errors++;
92                }
93            }
94        }
95        $line++;
96    }
97    close(F);
98}
99
100foreach my $f (@f) {
101    file($f);
102}
103
104exit $errors?1:0;
105