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
|
#!/usr/bin/perl
# Copyright 2022 Jeffrey Kegler
# This file is part of Marpa::R2. Marpa::R2 is free software: you can
# redistribute it and/or modify it under the terms of the GNU Lesser
# General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later version.
#
# Marpa::R2 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser
# General Public License along with Marpa::R2. If not, see
# http://www.gnu.org/licenses/.
use 5.010001;
use strict;
use warnings;
use LWP::UserAgent;
use URI::URL;
use HTML::LinkExtor;
use English qw( -no_match_vars );
use Fatal qw(open close);
use CPAN;
use Getopt::Long;
my $verbose = 0;
Carp::croak("usage: $PROGRAM_NAME [--verbose=[0|1|2] [distribution]")
if not Getopt::Long::GetOptions( 'verbose=i' => \$verbose );
use constant OK => 200;
my $most_recent_distribution = pop @ARGV;
if ( not $most_recent_distribution ) {
my @distributions =
grep {/\A Marpa [-] R2 [-] \d /xms}
sort map { $_->[2] }
CPAN::Shell->expand( 'Author', 'JKEGL' )->ls( 'Marpa-R2-*', 2 );
$most_recent_distribution = pop @distributions;
$most_recent_distribution =~ s/\.tar\.gz$//xms;
} ## end if ( not $most_recent_distribution )
my $cpan_base = 'http://search.cpan.org';
my $marpa_doc_base = $cpan_base . '/~jkegl/' . "$most_recent_distribution/";
if ($verbose) {
print "Starting at $marpa_doc_base\n"
or Carp::croak("Cannot print: $ERRNO");
}
$OUTPUT_AUTOFLUSH = 1;
my @doc_urls = ();
{
my $p = HTML::LinkExtor->new();
my $ua = LWP::UserAgent->new;
# Request document and parse it as it arrives
my $response = $ua->request( HTTP::Request->new( GET => $marpa_doc_base ),
sub { $p->parse( $_[0] ) } );
my $page_response_status_line = $response->status_line;
if ( $response->code != OK ) {
Carp::croak( 'PAGE: ', $page_response_status_line, q{ },
$marpa_doc_base );
}
my @links =
map { $_->[2] }
grep { $_->[0] eq 'a' and $_->[1] eq 'href' and $_->[2] !~ /^[#]/xms }
$p->links();
@doc_urls = grep {/^pod\//xms} @links;
}
my %url_seen = ();
my $at_col_0 = 1;
PAGE: for my $url (@doc_urls) {
$url = $marpa_doc_base . $url;
print "Examining document $url" or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 0;
my $p = HTML::LinkExtor->new();
my $ua = LWP::UserAgent->new;
# Request document and parse it as it arrives
my $response = $ua->request( HTTP::Request->new( GET => $url ),
sub { $p->parse( $_[0] ) } );
my $page_response_status_line = $response->status_line;
if ( $response->code != OK ) {
say 'PAGE: ', $page_response_status_line, q{ }, $url
or Carp::croak("Cannot print: $ERRNO");
next PAGE;
}
my @links =
map { $_->[2] }
grep { $_->[0] eq 'a' and $_->[1] eq 'href' } $p->links();
LINK: for my $link (@links) {
given ($link) {
when (/\A\//xms) {
$link = 'http://search.cpan.org' . $link;
}
when (/\A[#]/xms) {
$link = $url . $link;
}
} ## end given
if ( $url_seen{$link}++ ) {
if ( $verbose >= 2 ) {
say {*STDERR} "Already tried $link"
or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 1;
}
next LINK;
} ## end if ( $url_seen{$link}++ )
if ( $verbose > 1 ) {
$at_col_0 or print "\n" or Carp::croak("Cannot print: $ERRNO");
say {*STDERR} "Trying $link"
or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 1;
} ## end if ( $verbose > 1 )
my $link_response =
$ua->request( HTTP::Request->new( GET => $link ) );
if ( $link_response->code != OK ) {
$at_col_0 or print "\n" or Carp::croak("Cannot print: $ERRNO");
say 'FAIL: ', $link_response->status_line, q{ }, $link
or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 1;
next LINK;
} ## end if ( $link_response->code != OK )
if ( not $verbose ) {
print {*STDERR} q{.}
or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 0;
}
if ($verbose) {
$at_col_0 or print "\n" or Carp::croak("Cannot print: $ERRNO");
my $uri = $link_response->base();
say {*STDERR} "FOUND $link"
or Carp::croak("Cannot print: $ERRNO");
say {*STDERR} " uri: $uri"
or Carp::croak("Cannot print: $ERRNO");
if ( $verbose >= 3 ) {
for my $redirect ( $link_response->redirects() ) {
my $redirect_uri = $redirect->base();
say {*STDERR} " redirect: $redirect_uri"
or Carp::croak("Cannot print: $ERRNO");
}
} ## end if ( $verbose >= 3 )
$at_col_0 = 1;
} ## end if ($verbose)
} ## end for my $link (@links)
$at_col_0 or print "\n" or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 1;
if ($verbose) {
say " PAGE: $page_response_status_line: $url"
or Carp::croak("Cannot print: $ERRNO");
$at_col_0 = 1;
}
} ## end for my $url (@doc_urls)
|
