mr: Make check() even more pedantic

[code/myrepos.git] / webcheckout

diff --git a/webcheckout b/webcheckout
index 33bccb99e292b778195d9f0e6225ba7a4eb40976..e48d9de34dd9ed6ecd2fe6d8fb824711edc31e54 100755 (executable)
--- a/webcheckout
+++ b/webcheckout
@@ -1,19 +1,89 @@
 #!/usr/bin/perl
 #!/usr/bin/perl

+
+=head1 NAME
+
+webcheckout - check out repositories referenced on a web page
+
+=head1 SYNOPSIS
+
+B<webcheckout> [options] url [destdir]
+
+=head1 DESCRIPTION
+
+B<webcheckout> downloads an url and parses it, looking for version control 
+repositories referenced by the page. It checks out each repository into
+a subdirectory of the current directory, using whatever VCS program is
+appropriate for that repository (git, svn, etc).
+
+The information about the repositories is embedded in the web page using
+the rel=vcs-* microformat, which is documented at
+<http://kitenet.net/~joey/rfc/rel-vcs/>.
+
+If the optional destdir parameter is specified, VCS programs will be asked
+to check out repositories into that directory. If there are multiple
+repositories to check out, each will be checked out into a separate
+subdirectory of the destdir.
+
+=head1 OPTIONS
+
+=over 4
+
+=item -a, --auth
+
+Prefer authenticated repositories. By default, webcheckout will use
+anonymous repositories when possible. If you have an account that
+allows you to use authenticated repositories, you might want to use this
+option.
+
+=item --no-act, -n
+
+Do not actually check anything out, just print out the commands that would
+be run to check out the repositories.
+
+=item --quiet, -q
+
+Quiet mode. Do not print out the commands being run. (The VCS commands
+may still be noisy however.)
+
+=back
+
+=head1 PREREQUISITES
+
+To use this program you will need lots of VCS programs installed,
+obviously. It also depends on the perl LWP and HTML::Parser modules.
+
+If the perl URI module is installed, webcheckout can heuristically guess
+what you mean by partial URLs, such as "kitenet.net/~joey"'
+
+=head1 AUTHOR
+
+Copyright 2009 Joey Hess <joey@kitenet.net>
+
+Licensed under the GNU GPL version 2 or higher.
+
+This program is included in myrepos <http://myrepos.branchable.com/>
+
+=cut
+

 use LWP::Simple;
 use HTML::Parser;
 use LWP::Simple;
 use HTML::Parser;

+use Getopt::Long;

 use warnings;
 use strict;
 
 use warnings;
 use strict;
 

+# What to download.
+my $url;
+

 # Controls whether to print what is being done.
 # Controls whether to print what is being done.

-my $verbose=1;
+my $quiet=0;

 
 # Controls whether to actually check anything out.
 
 # Controls whether to actually check anything out.

-my $noact=1;
+my $noact=0;

 
 # Controls whether to perfer repos that use authentication.
 my $want_auth=0;
 
 
 # Controls whether to perfer repos that use authentication.
 my $want_auth=0;
 

-# Controls where to check out to. If not set, the vcs is allowed to
+# Controls where to check out to. If not set, the VCS is allowed to

 # decide.
 my $destdir;
 
 # decide.
 my $destdir;
 


@@ -35,9 +105,33 @@ my @anon_urls=(
        qr/^http:\/\//i, # generally the worst transport
 );
 
        qr/^http:\/\//i, # generally the worst transport
 );
 

+sub getopts {
+       Getopt::Long::Configure("bundling", "no_permute");
+       my $result=GetOptions(
+               "q|quiet" => \$quiet,
+               "n|noact" => \$noact,
+               "a|auth", => \$want_auth,
+       );
+       if (! $result || @ARGV < 1) {
+               die "usage: webcheckout [options] url [destdir]\n";
+       }
+
+       $url=shift @ARGV;
+       $destdir=shift @ARGV;
+
+       eval q{use URI::Heuristic};
+       if (! $@) {
+               $url=URI::Heuristic::uf_uristr($url);
+       }
+
+       if ($noact) {
+               $quiet=0;
+       }
+}
+

 sub doit {
        my @args=grep { defined } @_;
 sub doit {
        my @args=grep { defined } @_;

-       print join(" ", @args)."\n" if $verbose;
+       print join(" ", @args)."\n" unless $quiet;

        return 0 if $noact;
        return system(@args);
 }
        return 0 if $noact;
        return system(@args);
 }


@@ -46,23 +140,26 @@ sub doit {
 sub better {
        my ($a, $b)=@_;
 
 sub better {
        my ($a, $b)=@_;
 

-       my $firstanon=$b;
+       my @anon;

        foreach my $r (@anon_urls) {
                if ($a->{href} =~ /$r/) {
        foreach my $r (@anon_urls) {
                if ($a->{href} =~ /$r/) {

-                       $firstanon=$a;
-                       last;
+                       push @anon, $a;

                }
                elsif ($b->{href} =~ /$r/) {
                }
                elsif ($b->{href} =~ /$r/) {

-                       $firstanon=$b;
-                       last;
+                       push @anon, $b;

                }
        }
 
        if ($want_auth) {
                }
        }
 
        if ($want_auth) {

-               return $firstanon != $a;
+               # Whichever is authed is better.
+               return 1 if ! @anon || ! grep { $_ eq $a } @anon;
+               return 0 if ! grep { $_ eq $b } @anon;
+               # Neither is authed, so the better anon method wins.
+               return $anon[0] == $a;

        }
        else {
        }
        else {

-               return $firstanon == $a;
+               # Better anon method wins.
+               return @anon && $anon[0] == $a;

        }
 }
 
        }
 }
 


@@ -71,21 +168,26 @@ sub better {
 sub dedup {
        my %seenhref;
        my %bytitle;
 sub dedup {
        my %seenhref;
        my %bytitle;

+       my @others;

        foreach my $repo (@_) {
                if (exists $repo->{title} &&
        foreach my $repo (@_) {
                if (exists $repo->{title} &&

-                   length $repo->{title} &&
-                   exists $bytitle{$repo->{title}}) {
-                       my $other=$bytitle{$repo->{title}};
-                       next unless better($repo, $other);
-                       delete $bytitle{$other->{title}}
-               }
+                   length $repo->{title}) {
+                       if (exists $bytitle{$repo->{title}}) {
+                               my $other=$bytitle{$repo->{title}};
+                               next unless better($repo, $other);
+                               delete $bytitle{$other->{title}}
+                       }

 
 

-               if (! $seenhref{$repo->{href}}++) {
-                       $bytitle{$repo->{title}}=$repo;
+                       if (! $seenhref{$repo->{href}}++) {
+                               $bytitle{$repo->{title}}=$repo;
+                       }
+               }
+               else {
+                       push @others, $repo;

                }
        }
 
                }
        }
 

-       return values %bytitle;
+       return values %bytitle, @others;

 }
 
 sub parse {
 }
 
 sub parse {


@@ -93,25 +195,45 @@ sub parse {
 
        my @ret;
        my $parser=HTML::Parser->new(api_version => 3);
 
        my @ret;
        my $parser=HTML::Parser->new(api_version => 3);

+       my $abody=undef;
+       my $aref=undef;

        $parser->handler(start => sub {
                my $tagname=shift;
                my $attr=shift;
        $parser->handler(start => sub {
                my $tagname=shift;
                my $attr=shift;

-               return if lc $tagname ne 'link';
-               return if ! exists $attr->{rel} || lc $attr->{rel} ne 'vcs';
+

                return if ! exists $attr->{href} || ! length $attr->{href};
                return if ! exists $attr->{href} || ! length $attr->{href};

-               return if ! exists $attr->{type} || ! length $attr->{type};
+               return if ! exists $attr->{rel} || $attr->{rel} !~ /^vcs-(.+)/i;
+               $attr->{type}=lc($1);
+
+               # need to collect the body of the <a> tag if there is no title
+               if ($tagname eq "a" && ! exists $attr->{title}) {
+                       $abody="";
+                       $aref=$attr;
+               }
+

                push @ret, $attr;
        }, "tagname, attr");
                push @ret, $attr;
        }, "tagname, attr");

+       $parser->handler(text => sub {
+               if (defined $aref) {
+                       $abody.=join(" ", @_);
+               }
+       }, "text");
+       $parser->handler(end => sub {
+               my $tagname=shift;
+               if ($tagname eq "a" && defined $aref) {
+                       $aref->{title}=$abody;
+                       $aref=undef;
+                       $abody=undef;
+               }
+       }, "tagname");
+       $parser->report_tags(qw{link a});

        $parser->parse($page);
        $parser->eof;
 
        return @ret;
 }
 
        $parser->parse($page);
        $parser->eof;
 
        return @ret;
 }
 

-my $url=shift;
-if (! defined $url) {
-       die "usage: webcheckout url\n";
-}
+getopts();

 
 my $page=get($url);
 if (! defined $page) {
 
 my $page=get($url);
 if (! defined $page) {


@@ -123,6 +245,19 @@ if (! @repos) {
        die "no repositories found on $url\n";
 }
 
        die "no repositories found on $url\n";
 }
 

+#use Data::Dumper;
+#print Dumper(\@repos);
+#exit;
+
+if (defined $destdir && @repos > 1) {
+       # create subdirs of $destdir for the multiple repos
+       if (! $noact) {
+               mkdir($destdir);
+               chdir($destdir) || die "failed to chdir to $destdir: $!";
+       }
+       $destdir=undef;
+}
+

 my $errors=0;
 foreach my $repo (@repos) {
        my $handler=$handlers{$repo->{type}};
 my $errors=0;
 foreach my $repo (@repos) {
        my $handler=$handlers{$repo->{type}};


@@ -139,6 +274,3 @@ foreach my $repo (@repos) {
        }
 }
 exit($errors > 0);
        }
 }
 exit($errors > 0);

-
-#use Data::Dumper;
-#print Dumper(\@repos);