[p5sagit/p5-mst-13.2.git] / lib / CPAN / FirstTime.pm

package CPAN::Mirrored::By;

sub new { 
    my($self,@arg) = @_;
    bless [@arg], $self;
}
sub continent { shift->[0] }
sub country { shift->[1] }
sub url { shift->[2] }

package CPAN::FirstTime;

use strict;
use ExtUtils::MakeMaker qw(prompt);
use FileHandle ();
use File::Basename ();
use File::Path ();
use vars qw($VERSION);
$VERSION = substr q$Revision: 1.44 $, 10;

=head1 NAME

CPAN::FirstTime - Utility for CPAN::Config file Initialization

=head1 SYNOPSIS

CPAN::FirstTime::init()

=head1 DESCRIPTION

The init routine asks a few questions and writes a CPAN::Config
file. Nothing special.

=cut


sub init {
    my($configpm) = @_;
    use Config;
    unless ($CPAN::VERSION) {
	require CPAN::Nox;
    }
    eval {require CPAN::Config;};
    $CPAN::Config ||= {};
    local($/) = "\n";
    local($\) = "";
    local($|) = 1;

    my($ans,$default,$local,$cont,$url,$expected_size);

    #
    # Files, directories
    #

    print qq[

CPAN is the world-wide archive of perl resources. It consists of about
100 sites that all replicate the same contents all around the globe.
Many countries have at least one CPAN site already. The resources
found on CPAN are easily accessible with the CPAN.pm module. If you
want to use CPAN.pm, you have to configure it properly.

If you do not want to enter a dialog now, you can answer 'no' to this
question and I\'ll try to autoconfigure. (Note: you can revisit this
dialog anytime later by typing 'o conf init' at the cpan prompt.)

];

    my $manual_conf =
	ExtUtils::MakeMaker::prompt("Are you ready for manual configuration?",
				    "yes");
    my $fastread;
    {
      local $^W;
      if ($manual_conf =~ /^\s*y/i) {
	$fastread = 0;
	*prompt = \&ExtUtils::MakeMaker::prompt;
      } else {
	$fastread = 1;
	$CPAN::Config->{urllist} ||= [];
	# prototype should match that of &MakeMaker::prompt
	*prompt = sub ($;$) {
	  my($q,$a) = @_;
	  my($ret) = defined $a ? $a : "";
	  printf qq{%s [%s]\n\n}, $q, $ret;
	  $ret;
	};
      }
    }
    print qq{

The following questions are intended to help you with the
configuration. The CPAN module needs a directory of its own to cache
important index files and maybe keep a temporary mirror of CPAN files.
This may be a site-wide directory or a personal directory.

};

    my $cpan_home = $CPAN::Config->{cpan_home} || MM->catdir($ENV{HOME}, ".cpan");
    if (-d $cpan_home) {
	print qq{

I see you already have a  directory
    $cpan_home
Shall we use it as the general CPAN build and cache directory?

};
    } else {
	print qq{

First of all, I\'d like to create this directory. Where?

};
    }

    $default = $cpan_home;
    while ($ans = prompt("CPAN build and cache directory?",$default)) {
      eval { File::Path::mkpath($ans); }; # dies if it can't
      if ($@) {
	warn "Couldn't create directory $ans.
Please retry.\n";
	next;
      }
      if (-d $ans && -w _) {
	last;
      } else {
	warn "Couldn't find directory $ans
  or directory is not writable. Please retry.\n";
      }
    }
    $CPAN::Config->{cpan_home} = $ans;

    print qq{

If you want, I can keep the source files after a build in the cpan
home directory. If you choose so then future builds will take the
files from there. If you don\'t want to keep them, answer 0 to the
next question.

};

    $CPAN::Config->{keep_source_where} = MM->catdir($CPAN::Config->{cpan_home},"sources");
    $CPAN::Config->{build_dir} = MM->catdir($CPAN::Config->{cpan_home},"build");

    #
    # Cache size, Index expire
    #

    print qq{

How big should the disk cache be for keeping the build directories
with all the intermediate files\?

};

    $default = $CPAN::Config->{build_cache} || 10;
    $ans = prompt("Cache size for build directory (in MB)?", $default);
    $CPAN::Config->{build_cache} = $ans;

    # XXX This the time when we refetch the index files (in days)
    $CPAN::Config->{'index_expire'} = 1;

    print qq{

By default, each time the CPAN module is started, cache scanning
is performed to keep the cache size in sync. To prevent from this,
disable the cache scanning with 'never'.

};

    $default = $CPAN::Config->{scan_cache} || 'atstart';
    do {
        $ans = prompt("Perform cache scanning (atstart or never)?", $default);
    } while ($ans ne 'atstart' && $ans ne 'never');
    $CPAN::Config->{scan_cache} = $ans;

    print qq{

To speed up the initial CPAN shell startup, it is possible to use
Storable to create an cache of metadata. If Storable is not available,
the normal index mechanism will be used. This feature is still
considered experimental and not recommended for production use.

};

    defined($default = $CPAN::Config->{cache_metadata}) or $default = 0;
    do {
        $ans = prompt("Cache metadata (yes/no)?", ($default ? 'yes' : 'no'));
    } while ($ans !~ /^\s*[yn]/i);
    $CPAN::Config->{cache_metadata} = ($ans =~ /^\s*y/i ? 1 : 0);

    #
    # prerequisites_policy
    # Do we follow PREREQ_PM?
    #
    print qq{

The CPAN module can detect when a module that which you are trying to
build depends on prerequisites. If this happens, it can build the
prerequisites for you automatically ('follow'), ask you for
confirmation ('ask'), or just ignore them ('ignore'). Please set your
policy to one of the three values.

};

    $default = $CPAN::Config->{prerequisites_policy} || 'ask';
    do {
      $ans =
	  prompt("Policy on building prerequisites (follow, ask or ignore)?",
		 $default);
    } while ($ans ne 'follow' && $ans ne 'ask' && $ans ne 'ignore');
    $CPAN::Config->{prerequisites_policy} = $ans;

    #
    # External programs
    #

    print qq{

The CPAN module will need a few external programs to work
properly. Please correct me, if I guess the wrong path for a program.
Don\'t panic if you do not have some of them, just press ENTER for
those.

};

    my $old_warn = $^W;
    local $^W if $^O eq 'MacOS';
    my(@path) = split /$Config{'path_sep'}/, $ENV{'PATH'};
    local $^W = $old_warn;
    my $progname;
    for $progname (qw/gzip tar unzip make lynx ncftpget ncftp ftp/){
      if ($^O eq 'MacOS') {
          $CPAN::Config->{$progname} = 'not_here';
          next;
      }
      my $progcall = $progname;
      # we don't need ncftp if we have ncftpget
      next if $progname eq "ncftp" && $CPAN::Config->{ncftpget} gt " ";
      my $path = $CPAN::Config->{$progname} 
	  || $Config::Config{$progname}
	      || "";
      if (MM->file_name_is_absolute($path)) {
	# testing existence is not good enough, some have these exe
	# extensions

	# warn "Warning: configured $path does not exist\n" unless -e $path;
	# $path = "";
      } else {
	$path = '';
      }
      unless ($path) {
	# e.g. make -> nmake
	$progcall = $Config::Config{$progname} if $Config::Config{$progname};
      }

      $path ||= find_exe($progcall,[@path]);
      warn "Warning: $progcall not found in PATH\n" unless
	  $path; # not -e $path, because find_exe already checked that
      $ans = prompt("Where is your $progname program?",$path) || $path;
      $CPAN::Config->{$progname} = $ans;
    }
    my $path = $CPAN::Config->{'pager'} || 
	$ENV{PAGER} || find_exe("less",[@path]) || 
	    find_exe("more",[@path]) || ($^O eq 'MacOS' ? $ENV{EDITOR} : 0 )
	    || "more";
    $ans = prompt("What is your favorite pager program?",$path);
    $CPAN::Config->{'pager'} = $ans;
    $path = $CPAN::Config->{'shell'};
    if (MM->file_name_is_absolute($path)) {
	warn "Warning: configured $path does not exist\n" unless -e $path;
	$path = "";
    }
    $path ||= $ENV{SHELL};
    if ($^O eq 'MacOS') {
        $CPAN::Config->{'shell'} = 'not_here';
    } else {
        $path =~ s,\\,/,g if $^O eq 'os2';	# Cosmetic only
        $ans = prompt("What is your favorite shell?",$path);
        $CPAN::Config->{'shell'} = $ans;
    }

    #
    # Arguments to make etc.
    #

    print qq{

Every Makefile.PL is run by perl in a separate process. Likewise we
run \'make\' and \'make install\' in processes. If you have any parameters
\(e.g. PREFIX, INSTALLPRIVLIB, UNINST or the like\) you want to pass to
the calls, please specify them here.

If you don\'t understand this question, just press ENTER.

};

    $default = $CPAN::Config->{makepl_arg} || "";
    $CPAN::Config->{makepl_arg} =
	prompt("Parameters for the 'perl Makefile.PL' command?",$default);
    $default = $CPAN::Config->{make_arg} || "";
    $CPAN::Config->{make_arg} = prompt("Parameters for the 'make' command?",$default);

    $default = $CPAN::Config->{make_install_arg} || $CPAN::Config->{make_arg} || "";
    $CPAN::Config->{make_install_arg} =
	prompt("Parameters for the 'make install' command?",$default);

    #
    # Alarm period
    #

    print qq{

Sometimes you may wish to leave the processes run by CPAN alone
without caring about them. As sometimes the Makefile.PL contains
question you\'re expected to answer, you can set a timer that will
kill a 'perl Makefile.PL' process after the specified time in seconds.

If you set this value to 0, these processes will wait forever. This is
the default and recommended setting.

};

    $default = $CPAN::Config->{inactivity_timeout} || 0;
    $CPAN::Config->{inactivity_timeout} =
	prompt("Timeout for inactivity during Makefile.PL?",$default);

    # Proxies

    print qq{

If you\'re accessing the net via proxies, you can specify them in the
CPAN configuration or via environment variables. The variable in
the \$CPAN::Config takes precedence.

};

    for (qw/ftp_proxy http_proxy no_proxy/) {
	$default = $CPAN::Config->{$_} || $ENV{$_};
	$CPAN::Config->{$_} = prompt("Your $_?",$default);
    }

    #
    # MIRRORED.BY
    #

    conf_sites() unless $fastread;

    unless (@{$CPAN::Config->{'wait_list'}||[]}) {
	print qq{

WAIT support is available as a Plugin. You need the CPAN::WAIT module
to actually use it.  But we need to know your favorite WAIT server. If
you don\'t know a WAIT server near you, just press ENTER.

};
	$default = "wait://ls6.informatik.uni-dortmund.de:1404";
	$ans = prompt("Your favorite WAIT server?\n  ",$default);
	push @{$CPAN::Config->{'wait_list'}}, $ans;
    }

    # We don't ask that now, it will be noticed in time, won't it?
    $CPAN::Config->{'inhibit_startup_message'} = 0;
    $CPAN::Config->{'getcwd'} = 'cwd';

    print "\n\n";
    CPAN::Config->commit($configpm);
}

sub conf_sites {
  my $m = 'MIRRORED.BY';
  my $mby = MM->catfile($CPAN::Config->{keep_source_where},$m);
  File::Path::mkpath(File::Basename::dirname($mby));
  if (-f $mby && -f $m && -M $m < -M $mby) {
    require File::Copy;
    File::Copy::copy($m,$mby) or die "Could not update $mby: $!";
  }
  my $loopcount = 0;
  local $^T = time;
  while ($mby) {
    if ( ! -f $mby ){
      print qq{You have no $mby
  I\'m trying to fetch one
};
      $mby = CPAN::FTP->localize($m,$mby,3);
    } elsif (-M $mby > 60 && $loopcount == 0) {
      print qq{Your $mby is older than 60 days,
  I\'m trying to fetch one
};
      $mby = CPAN::FTP->localize($m,$mby,3);
      $loopcount++;
    } elsif (-s $mby == 0) {
      print qq{You have an empty $mby,
  I\'m trying to fetch one
};
      $mby = CPAN::FTP->localize($m,$mby,3);
    } else {
      last;
    }
  }
  read_mirrored_by($mby);
  bring_your_own();
}

sub find_exe {
    my($exe,$path) = @_;
    my($dir);
    #warn "in find_exe exe[$exe] path[@$path]";
    for $dir (@$path) {
	my $abs = MM->catfile($dir,$exe);
	if (($abs = MM->maybe_command($abs))) {
	    return $abs;
	}
    }
}

sub picklist {
    my($items,$prompt,$default,$require_nonempty,$empty_warning)=@_;
    $default ||= '';

    my ($item, $i);
    for $item (@$items) {
	printf "(%d) %s\n", ++$i, $item;
    }

    my @nums;
    while (1) {
	my $num = prompt($prompt,$default);
	@nums = split (' ', $num);
	(warn "invalid items entered, try again\n"), next
	    if grep (/\D/ || $_ < 1 || $_ > $i, @nums);
	if ($require_nonempty) {
	    (warn "$empty_warning\n"), next
		unless @nums;
	}
	last;
    }
    print "\n";
    for (@nums) { $_-- }
    @{$items}[@nums];
}

sub read_mirrored_by {
    my $local = shift or return;
    my(%all,$url,$expected_size,$default,$ans,$host,$dst,$country,$continent,@location);
    my $fh = FileHandle->new;
    $fh->open($local) or die "Couldn't open $local: $!";
    local $/ = "\012";
    while (<$fh>) {
	($host) = /^([\w\.\-]+)/ unless defined $host;
	next unless defined $host;
	next unless /\s+dst_(dst|location)/;
	/location\s+=\s+\"([^\"]+)/ and @location = (split /\s*,\s*/, $1) and
	    ($continent, $country) = @location[-1,-2];
	$continent =~ s/\s\(.*//;
	$continent =~ s/\W+$//; # if Jarkko doesn't know latitude/longitude
	/dst_dst\s+=\s+\"([^\"]+)/  and $dst = $1;
	next unless $host && $dst && $continent && $country;
	$all{$continent}{$country}{$dst} = CPAN::Mirrored::By->new($continent,$country,$dst);
	undef $host;
	$dst=$continent=$country="";
    }
    $fh->close;
    $CPAN::Config->{urllist} ||= [];
    my(@previous_urls);
    if (@previous_urls = @{$CPAN::Config->{urllist}}) {
	$CPAN::Config->{urllist} = [];
    }

    print qq{

Now we need to know where your favorite CPAN sites are located. Push
a few sites onto the array (just in case the first on the array won\'t
work). If you are mirroring CPAN to your local workstation, specify a
file: URL.

First, pick a nearby continent and country (you can pick several of
each, separated by spaces, or none if you just want to keep your
existing selections). Then, you will be presented with a list of URLs
of CPAN mirrors in the countries you selected, along with previously
selected URLs. Select some of those URLs, or just keep the old list.
Finally, you will be prompted for any extra URLs -- file:, ftp:, or
http: -- that host a CPAN mirror.

};

    my (@cont, $cont, %cont, @countries, @urls, %seen);
    my $no_previous_warn = 
       "Sorry! since you don't have any existing picks, you must make a\n" .
       "geographic selection.";
    @cont = picklist([sort keys %all],
                     "Select your continent (or several nearby continents)",
                     '',
                     ! @previous_urls,
                     $no_previous_warn);


    foreach $cont (@cont) {
        my @c = sort keys %{$all{$cont}};
        @cont{@c} = map ($cont, 0..$#c);
        @c = map ("$_ ($cont)", @c) if @cont > 1;
        push (@countries, @c);
    }

    if (@countries) {
        @countries = picklist (\@countries,
                               "Select your country (or several nearby countries)",
                               '',
                               ! @previous_urls,
                               $no_previous_warn);
        %seen = map (($_ => 1), @previous_urls);
        # hmmm, should take list of defaults from CPAN::Config->{'urllist'}...
        foreach $country (@countries) {
            (my $bare_country = $country) =~ s/ \(.*\)//;
            my @u = sort keys %{$all{$cont{$bare_country}}{$bare_country}};
            @u = grep (! $seen{$_}, @u);
            @u = map ("$_ ($bare_country)", @u)
               if @countries > 1;
            push (@urls, @u);
        }
    }
    push (@urls, map ("$_ (previous pick)", @previous_urls));
    my $prompt = "Select as many URLs as you like";
    if (@previous_urls) {
       $default = join (' ', ((scalar @urls) - (scalar @previous_urls) + 1) ..
                             (scalar @urls));
       $prompt .= "\n(or just hit RETURN to keep your previous picks)";
    }

    @urls = picklist (\@urls, $prompt, $default);
    foreach (@urls) { s/ \(.*\)//; }
    push @{$CPAN::Config->{urllist}}, @urls;
}

sub bring_your_own {
    my %seen = map (($_ => 1), @{$CPAN::Config->{urllist}});
    my($ans,@urls);
    do {
	my $prompt = "Enter another URL or RETURN to quit:";
	unless (%seen) {
	    $prompt = qq{CPAN.pm needs at least one URL where it can fetch CPAN files from.

Please enter your CPAN site:};
	}
        $ans = prompt ($prompt, "");

        if ($ans) {
            $ans =~ s|/?\z|/|; # has to end with one slash
            $ans = "file:$ans" unless $ans =~ /:/; # without a scheme is a file:
            if ($ans =~ /^\w+:\/./) {
               push @urls, $ans unless $seen{$ans}++;
            } else {
                print qq{"$ans" doesn\'t look like an URL at first sight.
I\'ll ignore it for now.  You can add it to $INC{'CPAN/MyConfig.pm'}
later if you\'re sure it\'s right.\n};
            }
        }
    } while $ans || !%seen;

    push @{$CPAN::Config->{urllist}}, @urls;
    # xxx delete or comment these out when you're happy that it works
    print "New set of picks:\n";
    map { print "  $_\n" } @{$CPAN::Config->{urllist}};
}

1;
Commit	Line	Data
5f05dabc	1	package CPAN::Mirrored::By;
	2
	3	sub new {
	4	my($self,@arg) = @_;
	5	bless [@arg], $self;
	6	}
da199366	7	sub continent { shift->[0] }
da199366	8	sub country { shift->[1] }
5f05dabc	9	sub url { shift->[2] }
	10
	11	package CPAN::FirstTime;
	12
	13	use strict;
	14	use ExtUtils::MakeMaker qw(prompt);
05454584	15	use FileHandle ();
09d9d230	16	use File::Basename ();
05454584	17	use File::Path ();
5f05dabc	18	use vars qw($VERSION);
6d29edf5	19	$VERSION = substr q$Revision: 1.44 $, 10;
5f05dabc	20
	21	=head1 NAME
	22
	23	CPAN::FirstTime - Utility for CPAN::Config file Initialization
	24
	25	=head1 SYNOPSIS
	26
	27	CPAN::FirstTime::init()
	28
	29	=head1 DESCRIPTION
	30
	31	The init routine asks a few questions and writes a CPAN::Config
	32	file. Nothing special.
	33
	34	=cut
	35
	36
	37	sub init {
	38	my($configpm) = @_;
	39	use Config;
f610777f	40	unless ($CPAN::VERSION) {
	41	require CPAN::Nox;
	42	}
5f05dabc	43	eval {require CPAN::Config;};
5f05dabc	44	$CPAN::Config \|\|= {};
da199366	45	local($/) = "\n";
da199366	46	local($\) = "";
13bc20ff	47	local($\|) = 1;
da199366	48
5f05dabc	49	my($ans,$default,$local,$cont,$url,$expected_size);
f610777f	50
da199366	51	#
	52	# Files, directories
	53	#
	54
2e2b7522	55	print qq[
09d9d230	56
	57	CPAN is the world-wide archive of perl resources. It consists of about
	58	100 sites that all replicate the same contents all around the globe.
	59	Many countries have at least one CPAN site already. The resources
	60	found on CPAN are easily accessible with the CPAN.pm module. If you
	61	want to use CPAN.pm, you have to configure it properly.
	62
	63	If you do not want to enter a dialog now, you can answer 'no' to this
	64	question and I\'ll try to autoconfigure. (Note: you can revisit this
	65	dialog anytime later by typing 'o conf init' at the cpan prompt.)
	66
2e2b7522	67	];
09d9d230	68
	69	my $manual_conf =
	70	ExtUtils::MakeMaker::prompt("Are you ready for manual configuration?",
	71	"yes");
	72	my $fastread;
	73	{
	74	local $^W;
	75	if ($manual_conf =~ /^\s*y/i) {
	76	$fastread = 0;
	77	*prompt = \&ExtUtils::MakeMaker::prompt;
	78	} else {
	79	$fastread = 1;
36263cb3	80	$CPAN::Config->{urllist} \|\|= [];
c9d9b473	81	# prototype should match that of &MakeMaker::prompt
c9d9b473	82	*prompt = sub ($;$) {
09d9d230	83	my($q,$a) = @_;
	84	my($ret) = defined $a ? $a : "";
	85	printf qq{%s [%s]\n\n}, $q, $ret;
	86	$ret;
	87	};
	88	}
	89	}
	90	print qq{
	91
	92	The following questions are intended to help you with the
	93	configuration. The CPAN module needs a directory of its own to cache
	94	important index files and maybe keep a temporary mirror of CPAN files.
	95	This may be a site-wide directory or a personal directory.
	96
5f05dabc	97	};
	98
	99	my $cpan_home = $CPAN::Config->{cpan_home} \|\| MM->catdir($ENV{HOME}, ".cpan");
	100	if (-d $cpan_home) {
	101	print qq{
	102
	103	I see you already have a directory
	104	$cpan_home
	105	Shall we use it as the general CPAN build and cache directory?
	106
	107	};
	108	} else {
	109	print qq{
	110
	111	First of all, I\'d like to create this directory. Where?
	112
	113	};
	114	}
	115
	116	$default = $cpan_home;
05454584	117	while ($ans = prompt("CPAN build and cache directory?",$default)) {
36263cb3	118	eval { File::Path::mkpath($ans); }; # dies if it can't
	119	if ($@) {
	120	warn "Couldn't create directory $ans.
	121	Please retry.\n";
	122	next;
	123	}
	124	if (-d $ans && -w _) {
	125	last;
	126	} else {
	127	warn "Couldn't find directory $ans
10b2abe6	128	or directory is not writable. Please retry.\n";
36263cb3	129	}
10b2abe6	130	}
5f05dabc	131	$CPAN::Config->{cpan_home} = $ans;
f610777f	132
5f05dabc	133	print qq{
	134
	135	If you want, I can keep the source files after a build in the cpan
	136	home directory. If you choose so then future builds will take the
	137	files from there. If you don\'t want to keep them, answer 0 to the
	138	next question.
	139
	140	};
	141
	142	$CPAN::Config->{keep_source_where} = MM->catdir($CPAN::Config->{cpan_home},"sources");
	143	$CPAN::Config->{build_dir} = MM->catdir($CPAN::Config->{cpan_home},"build");
	144
da199366	145	#
	146	# Cache size, Index expire
	147	#
	148
5f05dabc	149	print qq{
	150
	151	How big should the disk cache be for keeping the build directories
de34a54b	152	with all the intermediate files\?
5f05dabc	153
	154	};
	155
	156	$default = $CPAN::Config->{build_cache} \|\| 10;
	157	$ans = prompt("Cache size for build directory (in MB)?", $default);
	158	$CPAN::Config->{build_cache} = $ans;
	159
	160	# XXX This the time when we refetch the index files (in days)
	161	$CPAN::Config->{'index_expire'} = 1;
	162
f610777f	163	print qq{
	164
	165	By default, each time the CPAN module is started, cache scanning
	166	is performed to keep the cache size in sync. To prevent from this,
	167	disable the cache scanning with 'never'.
	168
	169	};
	170
	171	$default = $CPAN::Config->{scan_cache} \|\| 'atstart';
	172	do {
	173	$ans = prompt("Perform cache scanning (atstart or never)?", $default);
	174	} while ($ans ne 'atstart' && $ans ne 'never');
	175	$CPAN::Config->{scan_cache} = $ans;
	176
5e05dca5	177	print qq{
	178
	179	To speed up the initial CPAN shell startup, it is possible to use
c4d24d4c	180	Storable to create an cache of metadata. If Storable is not available,
c4d24d4c	181	the normal index mechanism will be used. This feature is still
6d29edf5	182	considered experimental and not recommended for production use.
5e05dca5	183
	184	};
	185
c4d24d4c	186	defined($default = $CPAN::Config->{cache_metadata}) or $default = 0;
5e05dca5	187	do {
	188	$ans = prompt("Cache metadata (yes/no)?", ($default ? 'yes' : 'no'));
	189	} while ($ans !~ /^\s*[yn]/i);
	190	$CPAN::Config->{cache_metadata} = ($ans =~ /^\s*y/i ? 1 : 0);
	191
f610777f	192	#
	193	# prerequisites_policy
	194	# Do we follow PREREQ_PM?
	195	#
	196	print qq{
	197
	198	The CPAN module can detect when a module that which you are trying to
	199	build depends on prerequisites. If this happens, it can build the
	200	prerequisites for you automatically ('follow'), ask you for
	201	confirmation ('ask'), or just ignore them ('ignore'). Please set your
	202	policy to one of the three values.
	203
	204	};
	205
de34a54b	206	$default = $CPAN::Config->{prerequisites_policy} \|\| 'ask';
f610777f	207	do {
f14b5cec	208	$ans =
	209	prompt("Policy on building prerequisites (follow, ask or ignore)?",
	210	$default);
f610777f	211	} while ($ans ne 'follow' && $ans ne 'ask' && $ans ne 'ignore');
	212	$CPAN::Config->{prerequisites_policy} = $ans;
	213
da199366	214	#
	215	# External programs
	216	#
	217
5f05dabc	218	print qq{
	219
	220	The CPAN module will need a few external programs to work
	221	properly. Please correct me, if I guess the wrong path for a program.
05454584	222	Don\'t panic if you do not have some of them, just press ENTER for
05454584	223	those.
5f05dabc	224
	225	};
	226
f14b5cec	227	my $old_warn = $^W;
f14b5cec	228	local $^W if $^O eq 'MacOS';
55e314ee	229	my(@path) = split /$Config{'path_sep'}/, $ENV{'PATH'};
f14b5cec	230	local $^W = $old_warn;
09d9d230	231	my $progname;
2e2b7522	232	for $progname (qw/gzip tar unzip make lynx ncftpget ncftp ftp/){
f14b5cec	233	if ($^O eq 'MacOS') {
	234	$CPAN::Config->{$progname} = 'not_here';
	235	next;
	236	}
09d9d230	237	my $progcall = $progname;
2e2b7522	238	# we don't need ncftp if we have ncftpget
	239	next if $progname eq "ncftp" && $CPAN::Config->{ncftpget} gt " ";
	240	my $path = $CPAN::Config->{$progname}
	241	\|\| $Config::Config{$progname}
	242	\|\| "";
	243	if (MM->file_name_is_absolute($path)) {
	244	# testing existence is not good enough, some have these exe
	245	# extensions
	246
	247	# warn "Warning: configured $path does not exist\n" unless -e $path;
	248	# $path = "";
	249	} else {
	250	$path = '';
	251	}
	252	unless ($path) {
	253	# e.g. make -> nmake
	254	$progcall = $Config::Config{$progname} if $Config::Config{$progname};
	255	}
09d9d230	256
2e2b7522	257	$path \|\|= find_exe($progcall,[@path]);
	258	warn "Warning: $progcall not found in PATH\n" unless
	259	$path; # not -e $path, because find_exe already checked that
	260	$ans = prompt("Where is your $progname program?",$path) \|\| $path;
	261	$CPAN::Config->{$progname} = $ans;
5f05dabc	262	}
	263	my $path = $CPAN::Config->{'pager'} \|\|
	264	$ENV{PAGER} \|\| find_exe("less",[@path]) \|\|
f14b5cec	265	find_exe("more",[@path]) \|\| ($^O eq 'MacOS' ? $ENV{EDITOR} : 0 )
f14b5cec	266	\|\| "more";
55e314ee	267	$ans = prompt("What is your favorite pager program?",$path);
5f05dabc	268	$CPAN::Config->{'pager'} = $ans;
55e314ee	269	$path = $CPAN::Config->{'shell'};
	270	if (MM->file_name_is_absolute($path)) {
	271	warn "Warning: configured $path does not exist\n" unless -e $path;
	272	$path = "";
	273	}
	274	$path \|\|= $ENV{SHELL};
f14b5cec	275	if ($^O eq 'MacOS') {
	276	$CPAN::Config->{'shell'} = 'not_here';
	277	} else {
	278	$path =~ s,\\,/,g if $^O eq 'os2'; # Cosmetic only
	279	$ans = prompt("What is your favorite shell?",$path);
	280	$CPAN::Config->{'shell'} = $ans;
	281	}
da199366	282
	283	#
	284	# Arguments to make etc.
	285	#
	286
5f05dabc	287	print qq{
5f05dabc	288
da199366	289	Every Makefile.PL is run by perl in a separate process. Likewise we
5f05dabc	290	run \'make\' and \'make install\' in processes. If you have any parameters
	291	\(e.g. PREFIX, INSTALLPRIVLIB, UNINST or the like\) you want to pass to
	292	the calls, please specify them here.
	293
05454584	294	If you don\'t understand this question, just press ENTER.
05454584	295
5f05dabc	296	};
	297
	298	$default = $CPAN::Config->{makepl_arg} \|\| "";
	299	$CPAN::Config->{makepl_arg} =
	300	prompt("Parameters for the 'perl Makefile.PL' command?",$default);
	301	$default = $CPAN::Config->{make_arg} \|\| "";
	302	$CPAN::Config->{make_arg} = prompt("Parameters for the 'make' command?",$default);
	303
	304	$default = $CPAN::Config->{make_install_arg} \|\| $CPAN::Config->{make_arg} \|\| "";
	305	$CPAN::Config->{make_install_arg} =
	306	prompt("Parameters for the 'make install' command?",$default);
	307
da199366	308	#
	309	# Alarm period
	310	#
	311
10b2abe6	312	print qq{
	313
	314	Sometimes you may wish to leave the processes run by CPAN alone
	315	without caring about them. As sometimes the Makefile.PL contains
	316	question you\'re expected to answer, you can set a timer that will
	317	kill a 'perl Makefile.PL' process after the specified time in seconds.
	318
e50380aa	319	If you set this value to 0, these processes will wait forever. This is
e50380aa	320	the default and recommended setting.
10b2abe6	321
	322	};
	323
	324	$default = $CPAN::Config->{inactivity_timeout} \|\| 0;
	325	$CPAN::Config->{inactivity_timeout} =
09d9d230	326	prompt("Timeout for inactivity during Makefile.PL?",$default);
10b2abe6	327
09d9d230	328	# Proxies
da199366	329
09d9d230	330	print qq{
10b2abe6	331
09d9d230	332	If you\'re accessing the net via proxies, you can specify them in the
	333	CPAN configuration or via environment variables. The variable in
	334	the \$CPAN::Config takes precedence.
5f05dabc	335
05454584	336	};
09d9d230	337
	338	for (qw/ftp_proxy http_proxy no_proxy/) {
	339	$default = $CPAN::Config->{$_} \|\| $ENV{$_};
	340	$CPAN::Config->{$_} = prompt("Your $_?",$default);
5f05dabc	341	}
5f05dabc	342
09d9d230	343	#
	344	# MIRRORED.BY
	345	#
	346
	347	conf_sites() unless $fastread;
	348
d4fd5c69	349	unless (@{$CPAN::Config->{'wait_list'}\|\|[]}) {
d4fd5c69	350	print qq{
da199366	351
05454584	352	WAIT support is available as a Plugin. You need the CPAN::WAIT module
	353	to actually use it. But we need to know your favorite WAIT server. If
	354	you don\'t know a WAIT server near you, just press ENTER.
	355
	356	};
d4fd5c69	357	$default = "wait://ls6.informatik.uni-dortmund.de:1404";
	358	$ans = prompt("Your favorite WAIT server?\n ",$default);
	359	push @{$CPAN::Config->{'wait_list'}}, $ans;
	360	}
05454584	361
e50380aa	362	# We don't ask that now, it will be noticed in time, won't it?
5f05dabc	363	$CPAN::Config->{'inhibit_startup_message'} = 0;
e50380aa	364	$CPAN::Config->{'getcwd'} = 'cwd';
5f05dabc	365
	366	print "\n\n";
	367	CPAN::Config->commit($configpm);
	368	}
	369
09d9d230	370	sub conf_sites {
	371	my $m = 'MIRRORED.BY';
	372	my $mby = MM->catfile($CPAN::Config->{keep_source_where},$m);
	373	File::Path::mkpath(File::Basename::dirname($mby));
	374	if (-f $mby && -f $m && -M $m < -M $mby) {
	375	require File::Copy;
	376	File::Copy::copy($m,$mby) or die "Could not update $mby: $!";
	377	}
911a92db	378	my $loopcount = 0;
de34a54b	379	local $^T = time;
de34a54b	380	while ($mby) {
36263cb3	381	if ( ! -f $mby ){
36263cb3	382	print qq{You have no $mby
09d9d230	383	I\'m trying to fetch one
09d9d230	384	};
36263cb3	385	$mby = CPAN::FTP->localize($m,$mby,3);
911a92db	386	} elsif (-M $mby > 60 && $loopcount == 0) {
911a92db	387	print qq{Your $mby is older than 60 days,
09d9d230	388	I\'m trying to fetch one
09d9d230	389	};
36263cb3	390	$mby = CPAN::FTP->localize($m,$mby,3);
911a92db	391	$loopcount++;
36263cb3	392	} elsif (-s $mby == 0) {
	393	print qq{You have an empty $mby,
	394	I\'m trying to fetch one
	395	};
	396	$mby = CPAN::FTP->localize($m,$mby,3);
	397	} else {
	398	last;
	399	}
09d9d230	400	}
09d9d230	401	read_mirrored_by($mby);
de34a54b	402	bring_your_own();
09d9d230	403	}
09d9d230	404
5f05dabc	405	sub find_exe {
5f05dabc	406	my($exe,$path) = @_;
55e314ee	407	my($dir);
55e314ee	408	#warn "in find_exe exe[$exe] path[@$path]";
5f05dabc	409	for $dir (@$path) {
55e314ee	410	my $abs = MM->catfile($dir,$exe);
13bc20ff	411	if (($abs = MM->maybe_command($abs))) {
5f05dabc	412	return $abs;
	413	}
	414	}
	415	}
	416
f610777f	417	sub picklist {
	418	my($items,$prompt,$default,$require_nonempty,$empty_warning)=@_;
	419	$default \|\|= '';
	420
	421	my ($item, $i);
	422	for $item (@$items) {
	423	printf "(%d) %s\n", ++$i, $item;
	424	}
	425
	426	my @nums;
	427	while (1) {
	428	my $num = prompt($prompt,$default);
	429	@nums = split (' ', $num);
	430	(warn "invalid items entered, try again\n"), next
	431	if grep (/\D/ \|\| $_ < 1 \|\| $_ > $i, @nums);
	432	if ($require_nonempty) {
	433	(warn "$empty_warning\n"), next
	434	unless @nums;
	435	}
	436	last;
	437	}
	438	print "\n";
	439	for (@nums) { $_-- }
	440	@{$items}[@nums];
	441	}
	442
5f05dabc	443	sub read_mirrored_by {
de34a54b	444	my $local = shift or return;
5f05dabc	445	my(%all,$url,$expected_size,$default,$ans,$host,$dst,$country,$continent,@location);
05454584	446	my $fh = FileHandle->new;
05454584	447	$fh->open($local) or die "Couldn't open $local: $!";
f14b5cec	448	local $/ = "\012";
05454584	449	while (<$fh>) {
5f05dabc	450	($host) = /^([\w\.\-]+)/ unless defined $host;
	451	next unless defined $host;
	452	next unless /\s+dst_(dst\|location)/;
	453	/location\s+=\s+\"([^\"]+)/ and @location = (split /\s,\s/, $1) and
	454	($continent, $country) = @location[-1,-2];
	455	$continent =~ s/\s\(.*//;
f610777f	456	$continent =~ s/\W+$//; # if Jarkko doesn't know latitude/longitude
5f05dabc	457	/dst_dst\s+=\s+\"([^\"]+)/ and $dst = $1;
	458	next unless $host && $dst && $continent && $country;
	459	$all{$continent}{$country}{$dst} = CPAN::Mirrored::By->new($continent,$country,$dst);
	460	undef $host;
	461	$dst=$continent=$country="";
	462	}
05454584	463	$fh->close;
5f05dabc	464	$CPAN::Config->{urllist} \|\|= [];
f610777f	465	my(@previous_urls);
f610777f	466	if (@previous_urls = @{$CPAN::Config->{urllist}}) {
5f05dabc	467	$CPAN::Config->{urllist} = [];
5f05dabc	468	}
f610777f	469
5f05dabc	470	print qq{
5f05dabc	471
f610777f	472	Now we need to know where your favorite CPAN sites are located. Push
5f05dabc	473	a few sites onto the array (just in case the first on the array won\'t
	474	work). If you are mirroring CPAN to your local workstation, specify a
	475	file: URL.
	476
f610777f	477	First, pick a nearby continent and country (you can pick several of
	478	each, separated by spaces, or none if you just want to keep your
	479	existing selections). Then, you will be presented with a list of URLs
	480	of CPAN mirrors in the countries you selected, along with previously
	481	selected URLs. Select some of those URLs, or just keep the old list.
	482	Finally, you will be prompted for any extra URLs -- file:, ftp:, or
	483	http: -- that host a CPAN mirror.
5f05dabc	484
	485	};
	486
f610777f	487	my (@cont, $cont, %cont, @countries, @urls, %seen);
	488	my $no_previous_warn =
	489	"Sorry! since you don't have any existing picks, you must make a\n" .
	490	"geographic selection.";
	491	@cont = picklist([sort keys %all],
	492	"Select your continent (or several nearby continents)",
	493	'',
	494	! @previous_urls,
	495	$no_previous_warn);
	496
	497
	498	foreach $cont (@cont) {
	499	my @c = sort keys %{$all{$cont}};
	500	@cont{@c} = map ($cont, 0..$#c);
	501	@c = map ("$_ ($cont)", @c) if @cont > 1;
	502	push (@countries, @c);
5f05dabc	503	}
f610777f	504
	505	if (@countries) {
	506	@countries = picklist (\@countries,
	507	"Select your country (or several nearby countries)",
	508	'',
	509	! @previous_urls,
	510	$no_previous_warn);
	511	%seen = map (($_ => 1), @previous_urls);
	512	# hmmm, should take list of defaults from CPAN::Config->{'urllist'}...
	513	foreach $country (@countries) {
	514	(my $bare_country = $country) =~ s/ \(.*\)//;
	515	my @u = sort keys %{$all{$cont{$bare_country}}{$bare_country}};
	516	@u = grep (! $seen{$_}, @u);
	517	@u = map ("$_ ($bare_country)", @u)
	518	if @countries > 1;
	519	push (@urls, @u);
	520	}
	521	}
	522	push (@urls, map ("$_ (previous pick)", @previous_urls));
	523	my $prompt = "Select as many URLs as you like";
	524	if (@previous_urls) {
	525	$default = join (' ', ((scalar @urls) - (scalar @previous_urls) + 1) ..
	526	(scalar @urls));
	527	$prompt .= "\n(or just hit RETURN to keep your previous picks)";
	528	}
	529
	530	@urls = picklist (\@urls, $prompt, $default);
	531	foreach (@urls) { s/ \(.*\)//; }
de34a54b	532	push @{$CPAN::Config->{urllist}}, @urls;
de34a54b	533	}
f610777f	534
de34a54b	535	sub bring_your_own {
	536	my %seen = map (($_ => 1), @{$CPAN::Config->{urllist}});
	537	my($ans,@urls);
f610777f	538	do {
de34a54b	539	my $prompt = "Enter another URL or RETURN to quit:";
	540	unless (%seen) {
	541	$prompt = qq{CPAN.pm needs at least one URL where it can fetch CPAN files from.
	542
	543	Please enter your CPAN site:};
	544	}
	545	$ans = prompt ($prompt, "");
f610777f	546
f610777f	547	if ($ans) {
de34a54b	548	$ans =~ s\|/?\z\|/\|; # has to end with one slash
f610777f	549	$ans = "file:$ans" unless $ans =~ /:/; # without a scheme is a file:
f610777f	550	if ($ans =~ /^\w+:\/./) {
de34a54b	551	push @urls, $ans unless $seen{$ans}++;
de34a54b	552	} else {
f610777f	553	print qq{"$ans" doesn\'t look like an URL at first sight.
	554	I\'ll ignore it for now. You can add it to $INC{'CPAN/MyConfig.pm'}
	555	later if you\'re sure it\'s right.\n};
	556	}
	557	}
de34a54b	558	} while $ans \|\| !%seen;
f610777f	559
	560	push @{$CPAN::Config->{urllist}}, @urls;
	561	# xxx delete or comment these out when you're happy that it works
	562	print "New set of picks:\n";
	563	map { print " $_\n" } @{$CPAN::Config->{urllist}};
5f05dabc	564	}
	565
	566	1;