res results from the CPAN

AI-MaxEntropy

#line 1
package Module::AutoInstall;

use strict;
use Cwd                 ();
use ExtUtils::MakeMaker ();

use vars qw{$VERSION};
BEGIN {
	$VERSION = '1.03';
}

# special map on pre-defined feature sets
my %FeatureMap = (
    ''      => 'Core Features',    # XXX: deprecated
    '-core' => 'Core Features',
);

# various lexical flags
my ( @Missing, @Existing,  %DisabledTests, $UnderCPAN,     $HasCPANPLUS );
my ( $Config,  $CheckOnly, $SkipInstall,   $AcceptDefault, $TestOnly );
my ( $PostambleActions, $PostambleUsed );

# See if it's a testing or non-interactive session
_accept_default( $ENV{AUTOMATED_TESTING} or ! -t STDIN ); 
_init();

sub _accept_default {
    $AcceptDefault = shift;
}

sub missing_modules {
    return @Missing;
}

sub do_install {
    __PACKAGE__->install(
        [
            $Config
            ? ( UNIVERSAL::isa( $Config, 'HASH' ) ? %{$Config} : @{$Config} )
            : ()
        ],
        @Missing,
    );
}

# initialize various flags, and/or perform install
sub _init {
    foreach my $arg (
        @ARGV,
        split(
            /[\s\t]+/,
            $ENV{PERL_AUTOINSTALL} || $ENV{PERL_EXTUTILS_AUTOINSTALL} || ''
        )
      )
    {
        if ( $arg =~ /^--config=(.*)$/ ) {
            $Config = [ split( ',', $1 ) ];
        }
        elsif ( $arg =~ /^--installdeps=(.*)$/ ) {
            __PACKAGE__->install( $Config, @Missing = split( /,/, $1 ) );
            exit 0;
        }
        elsif ( $arg =~ /^--default(?:deps)?$/ ) {
            $AcceptDefault = 1;
        }
        elsif ( $arg =~ /^--check(?:deps)?$/ ) {
            $CheckOnly = 1;
        }
        elsif ( $arg =~ /^--skip(?:deps)?$/ ) {
            $SkipInstall = 1;
        }
        elsif ( $arg =~ /^--test(?:only)?$/ ) {
            $TestOnly = 1;
        }
    }
}

# overrides MakeMaker's prompt() to automatically accept the default choice
sub _prompt {
    goto &ExtUtils::MakeMaker::prompt unless $AcceptDefault;

    my ( $prompt, $default ) = @_;
    my $y = ( $default =~ /^[Yy]/ );

    print $prompt, ' [', ( $y ? 'Y' : 'y' ), '/', ( $y ? 'n' : 'N' ), '] ';
    print "$default\n";
    return $default;
}

# the workhorse
sub import {
    my $class = shift;
    my @args  = @_ or return;
    my $core_all;

    print "*** $class version " . $class->VERSION . "\n";
    print "*** Checking for Perl dependencies...\n";

    my $cwd = Cwd::cwd();

    $Config = [];

    my $maxlen = length(
        (
            sort   { length($b) <=> length($a) }
              grep { /^[^\-]/ }
              map  {
                ref($_)
                  ? ( ( ref($_) eq 'HASH' ) ? keys(%$_) : @{$_} )
                  : ''
              }
              map { +{@args}->{$_} }
              grep { /^[^\-]/ or /^-core$/i } keys %{ +{@args} }
        )[0]
    );

    while ( my ( $feature, $modules ) = splice( @args, 0, 2 ) ) {
        my ( @required, @tests, @skiptests );
        my $default  = 1;
        my $conflict = 0;

        if ( $feature =~ m/^-(\w+)$/ ) {
            my $option = lc($1);

            # check for a newer version of myself
            _update_to( $modules, @_ ) and return if $option eq 'version';

            # sets CPAN configuration options
            $Config = $modules if $option eq 'config';

            # promote every features to core status
            $core_all = ( $modules =~ /^all$/i ) and next
              if $option eq 'core';

            next unless $option eq 'core';
        }

        print "[" . ( $FeatureMap{ lc($feature) } || $feature ) . "]\n";

        $modules = [ %{$modules} ] if UNIVERSAL::isa( $modules, 'HASH' );

        unshift @$modules, -default => &{ shift(@$modules) }
          if ( ref( $modules->[0] ) eq 'CODE' );    # XXX: bugward combatability

        while ( my ( $mod, $arg ) = splice( @$modules, 0, 2 ) ) {
            if ( $mod =~ m/^-(\w+)$/ ) {
                my $option = lc($1);

                $default   = $arg    if ( $option eq 'default' );
                $conflict  = $arg    if ( $option eq 'conflict' );
                @tests     = @{$arg} if ( $option eq 'tests' );
                @skiptests = @{$arg} if ( $option eq 'skiptests' );

                next;
            }

            printf( "- %-${maxlen}s ...", $mod );

            if ( $arg and $arg =~ /^\D/ ) {
                unshift @$modules, $arg;
                $arg = 0;
            }

            # XXX: check for conflicts and uninstalls(!) them.
            if (
                defined( my $cur = _version_check( _load($mod), $arg ||= 0 ) ) )
            {
                print "loaded. ($cur" . ( $arg ? " >= $arg" : '' ) . ")\n";
                push @Existing, $mod => $arg;
                $DisabledTests{$_} = 1 for map { glob($_) } @skiptests;
            }
            else {
                print "missing." . ( $arg ? " (would need $arg)" : '' ) . "\n";
                push @required, $mod => $arg;
            }
        }

        next unless @required;

        my $mandatory = ( $feature eq '-core' or $core_all );

        if (
            !$SkipInstall
            and (
                $CheckOnly
                or _prompt(
                    qq{==> Auto-install the }
                      . ( @required / 2 )
                      . ( $mandatory ? ' mandatory' : ' optional' )
                      . qq{ module(s) from CPAN?},
                    $default ? 'y' : 'n',

inc/Module/AutoInstall.pm view on Meta::CPAN


    return $installed;
}

sub _has_cpanplus {
    return (
        $HasCPANPLUS = (
            $INC{'CPANPLUS/Config.pm'}
              or _load('CPANPLUS::Shell::Default')
        )
    );
}

# make guesses on whether we're under the CPAN installation directory
sub _under_cpan {
    require Cwd;
    require File::Spec;

    my $cwd  = File::Spec->canonpath( Cwd::cwd() );
    my $cpan = File::Spec->canonpath( $CPAN::Config->{cpan_home} );

    return ( index( $cwd, $cpan ) > -1 );
}

sub _update_to {
    my $class = __PACKAGE__;
    my $ver   = shift;

    return
      if defined( _version_check( _load($class), $ver ) );  # no need to upgrade

    if (
        _prompt( "==> A newer version of $class ($ver) is required. Install?",
            'y' ) =~ /^[Nn]/
      )
    {
        die "*** Please install $class $ver manually.\n";
    }

    print << ".";
*** Trying to fetch it from CPAN...
.

    # install ourselves
    _load($class) and return $class->import(@_)
      if $class->install( [], $class, $ver );

    print << '.'; exit 1;

*** Cannot bootstrap myself. :-( Installation terminated.
.
}

# check if we're connected to some host, using inet_aton
sub _connected_to {
    my $site = shift;

    return (
        ( _load('Socket') and Socket::inet_aton($site) ) or _prompt(
            qq(
*** Your host cannot resolve the domain name '$site', which
    probably means the Internet connections are unavailable.
==> Should we try to install the required module(s) anyway?), 'n'
          ) =~ /^[Yy]/
    );
}

# check if a directory is writable; may create it on demand
sub _can_write {
    my $path = shift;
    mkdir( $path, 0755 ) unless -e $path;

    return 1 if -w $path;

    print << ".";
*** You are not allowed to write to the directory '$path';
    the installation may fail due to insufficient permissions.
.

    if (
        eval '$>' and lc(`sudo -V`) =~ /version/ and _prompt(
            qq(
==> Should we try to re-execute the autoinstall process with 'sudo'?),
            ((-t STDIN) ? 'y' : 'n')
        ) =~ /^[Yy]/
      )
    {

        # try to bootstrap ourselves from sudo
        print << ".";
*** Trying to re-execute the autoinstall process with 'sudo'...
.
        my $missing = join( ',', @Missing );
        my $config = join( ',',
            UNIVERSAL::isa( $Config, 'HASH' ) ? %{$Config} : @{$Config} )
          if $Config;

        return
          unless system( 'sudo', $^X, $0, "--config=$config",
            "--installdeps=$missing" );

        print << ".";
*** The 'sudo' command exited with error!  Resuming...
.
    }

    return _prompt(
        qq(
==> Should we try to install the required module(s) anyway?), 'n'
    ) =~ /^[Yy]/;
}

# load a module and return the version it reports
sub _load {
    my $mod  = pop;    # class/instance doesn't matter
    my $file = $mod;

    $file =~ s|::|/|g;
    $file .= '.pm';

    local $@;

inc/Module/AutoInstall.pm view on Meta::CPAN


# nothing; this usage is deprecated.
sub main::PREREQ_PM { return {}; }

sub _make_args {
    my %args = @_;

    $args{PREREQ_PM} = { %{ $args{PREREQ_PM} || {} }, @Existing, @Missing }
      if $UnderCPAN or $TestOnly;

    if ( $args{EXE_FILES} and -e 'MANIFEST' ) {
        require ExtUtils::Manifest;
        my $manifest = ExtUtils::Manifest::maniread('MANIFEST');

        $args{EXE_FILES} =
          [ grep { exists $manifest->{$_} } @{ $args{EXE_FILES} } ];
    }

    $args{test}{TESTS} ||= 't/*.t';
    $args{test}{TESTS} = join( ' ',
        grep { !exists( $DisabledTests{$_} ) }
          map { glob($_) } split( /\s+/, $args{test}{TESTS} ) );

    my $missing = join( ',', @Missing );
    my $config =
      join( ',', UNIVERSAL::isa( $Config, 'HASH' ) ? %{$Config} : @{$Config} )
      if $Config;

    $PostambleActions = (
        $missing
        ? "\$(PERL) $0 --config=$config --installdeps=$missing"
        : "\$(NOECHO) \$(NOOP)"
    );

    return %args;
}

# a wrapper to ExtUtils::MakeMaker::WriteMakefile
sub Write {
    require Carp;
    Carp::croak "WriteMakefile: Need even number of args" if @_ % 2;

    if ($CheckOnly) {
        print << ".";
*** Makefile not written in check-only mode.
.
        return;
    }

    my %args = _make_args(@_);

    no strict 'refs';

    $PostambleUsed = 0;
    local *MY::postamble = \&postamble unless defined &MY::postamble;
    ExtUtils::MakeMaker::WriteMakefile(%args);

    print << "." unless $PostambleUsed;
*** WARNING: Makefile written with customized MY::postamble() without
    including contents from Module::AutoInstall::postamble() --
    auto installation features disabled.  Please contact the author.
.

    return 1;
}

sub postamble {
    $PostambleUsed = 1;

    return << ".";

config :: installdeps
\t\$(NOECHO) \$(NOOP)

checkdeps ::
\t\$(PERL) $0 --checkdeps

installdeps ::
\t$PostambleActions

.

}

1;

__END__

#line 1003

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