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

package CPAN::HandleConfig;
use strict;
use vars qw(%can %keys $dot_cpan $VERSION);

$VERSION = sprintf "%.2f", substr(q$Rev: 488 $,4)/100;

%can = (
  'commit' => "Commit changes to disk",
  'defaults' => "Reload defaults from disk",
  'init'   => "Interactive setting of all options",
);

%keys = map { $_ => undef } qw(
    build_cache build_dir bzip2
    cache_metadata commandnumber_in_prompt cpan_home curl
    dontload_hash
    ftp ftp_passive ftp_proxy
    getcwd gpg gzip
    histfile histsize http_proxy
    inactivity_timeout index_expire inhibit_startup_message
    keep_source_where
    lynx
    make make_arg make_install_arg make_install_make_command makepl_arg
    mbuild_arg mbuild_install_arg mbuild_install_build_command mbuildpl_arg
    ncftp ncftpget no_proxy pager
    prefer_installer prerequisites_policy
    scan_cache shell show_upload_date
    tar term_is_latin
    unzip urllist
    wait_list wget
);
if ($^O eq "MSWin32") {
    for my $k (qw(
                  mbuild_install_build_command
                  make_install_make_command
                 )) {
        delete $keys{$k};
        if (exists $CPAN::Config->{$k}) {
            $CPAN::Frontend->mywarn("deleting previously set config variable ".
                                    "'$k' => '$CPAN::Config->{$k}'");
            delete $CPAN::Config->{$k};
        }
    }
}

# returns true on successful action
sub edit {
    my($self,@args) = @_;
    return unless @args;
    CPAN->debug("self[$self]args[".join(" | ",@args)."]");
    my($o,$str,$func,$args,$key_exists);
    $o = shift @args;
    $DB::single = 1;
    if($can{$o}) {
	$self->$o(args => \@args);
	return 1;
    } else {
        CPAN->debug("o[$o]") if $CPAN::DEBUG;
        unless (exists $keys{$o}) {
            $CPAN::Frontend->mywarn("Warning: unknown configuration variable '$o'\n");
        }
	if ($o =~ /list$/) {
	    $func = shift @args;
	    $func ||= "";
            CPAN->debug("func[$func]") if $CPAN::DEBUG;
            my $changed;
	    # Let's avoid eval, it's easier to comprehend without.
	    if ($func eq "push") {
		push @{$CPAN::Config->{$o}}, @args;
                $changed = 1;
	    } elsif ($func eq "pop") {
		pop @{$CPAN::Config->{$o}};
                $changed = 1;
	    } elsif ($func eq "shift") {
		shift @{$CPAN::Config->{$o}};
                $changed = 1;
	    } elsif ($func eq "unshift") {
		unshift @{$CPAN::Config->{$o}}, @args;
                $changed = 1;
	    } elsif ($func eq "splice") {
		splice @{$CPAN::Config->{$o}}, @args;
                $changed = 1;
	    } elsif (@args) {
		$CPAN::Config->{$o} = [@args];
                $changed = 1;
	    } else {
                $self->prettyprint($o);
	    }
            if ($o eq "urllist" && $changed) {
                # reset the cached values
                undef $CPAN::FTP::Thesite;
                undef $CPAN::FTP::Themethod;
            }
            return $changed;
        } elsif ($o =~ /_hash$/) {
            @args = () if @args==1 && $args[0] eq "";
            push @args, "" if @args % 2;
            $CPAN::Config->{$o} = { @args };
        } else {
	    $CPAN::Config->{$o} = $args[0] if defined $args[0];
	    $self->prettyprint($o);
	}
    }
}

sub prettyprint {
  my($self,$k) = @_;
  my $v = $CPAN::Config->{$k};
  if (ref $v) {
    my(@report);
    if (ref $v eq "ARRAY") {
      @report = map {"\t[$_]\n"} @$v;
    } else {
      @report = map { sprintf("\t%-18s => %s\n",
                              map { "[$_]" } $_,
                              defined $v->{$_} ? $v->{$_} : "UNDEFINED"
                             )} keys %$v;
    }
    $CPAN::Frontend->myprint(
                             join(
                                  "",
                                  sprintf(
                                          "    %-18s\n",
                                          $k
                                         ),
                                  @report
                                 )
                            );
  } elsif (defined $v) {
    $CPAN::Frontend->myprint(sprintf "    %-18s [%s]\n", $k, $v);
  } else {
    $CPAN::Frontend->myprint(sprintf "    %-18s [%s]\n", $k, "UNDEFINED");
  }
}

sub commit {
    my($self,@args) = @_;
    my $configpm;
    if (@args) {
      if ($args[0] eq "args") {
        # we have not signed that contract
      } else {
        $configpm = $args[0];
      }
    }
    unless (defined $configpm){
	$configpm ||= $INC{"CPAN/MyConfig.pm"};
	$configpm ||= $INC{"CPAN/Config.pm"};
	$configpm || Carp::confess(q{
CPAN::Config::commit called without an argument.
Please specify a filename where to save the configuration or try
"o conf init" to have an interactive course through configing.
});
    }
    my($mode);
    if (-f $configpm) {
	$mode = (stat $configpm)[2];
	if ($mode && ! -w _) {
	    Carp::confess("$configpm is not writable");
	}
    }

    my $msg;
    $msg = <<EOF unless $configpm =~ /MyConfig/;

# This is CPAN.pm's systemwide configuration file. This file provides
# defaults for users, and the values can be changed in a per-user
# configuration file. The user-config file is being looked for as
# ~/.cpan/CPAN/MyConfig.pm.

EOF
    $msg ||= "\n";
    my($fh) = FileHandle->new;
    rename $configpm, "$configpm~" if -f $configpm;
    open $fh, ">$configpm" or
        $CPAN::Frontend->mydie("Couldn't open >$configpm: $!");
    $fh->print(qq[$msg\$CPAN::Config = \{\n]);
    foreach (sort keys %$CPAN::Config) {
        unless (exists $keys{$_}) {
            $CPAN::Frontend->mywarn("Dropping unknown config variable '$_'\n");
            delete $CPAN::Config->{$_};
            next;
        }
	$fh->print(
		   "  '$_' => ",
		   $self->neatvalue($CPAN::Config->{$_}),
		   ",\n"
		  );
    }

    $fh->print("};\n1;\n__END__\n");
    close $fh;

    #$mode = 0444 | ( $mode & 0111 ? 0111 : 0 );
    #chmod $mode, $configpm;
###why was that so?    $self->defaults;
    $CPAN::Frontend->myprint("commit: wrote '$configpm'\n");
    1;
}

# stolen from MakeMaker; not taking the original because it is buggy;
# bugreport will have to say: keys of hashes remain unquoted and can
# produce syntax errors
sub neatvalue {
    my($self, $v) = @_;
    return "undef" unless defined $v;
    my($t) = ref $v;
    return "q[$v]" unless $t;
    if ($t eq 'ARRAY') {
        my(@m, @neat);
        push @m, "[";
        foreach my $elem (@$v) {
            push @neat, "q[$elem]";
        }
        push @m, join ", ", @neat;
        push @m, "]";
        return join "", @m;
    }
    return "$v" unless $t eq 'HASH';
    my(@m, $key, $val);
    while (($key,$val) = each %$v){
        last unless defined $key; # cautious programming in case (undef,undef) is true
        push(@m,"q[$key]=>".$self->neatvalue($val)) ;
    }
    return "{ ".join(', ',@m)." }";
}

sub defaults {
    my($self) = @_;
    my $done;
    for my $config (qw(CPAN/MyConfig.pm CPAN/Config.pm)) {
      CPAN::Shell->reload_this($config) and $done++;
      last if $done;
    }
    1;
}

sub init {
    my($self,@args) = @_;
    undef $CPAN::Config->{'inhibit_startup_message'}; # lazy trick to
                                                      # have the least
                                                      # important
                                                      # variable
                                                      # undefined
    $self->load(@args);
    1;
}

# This is a piece of repeated code that is abstracted here for
# maintainability.  RMB
#
sub _configpmtest {
    my($configpmdir, $configpmtest) = @_; 
    if (-w $configpmtest) {
        return $configpmtest;
    } elsif (-w $configpmdir) {
        #_#_# following code dumped core on me with 5.003_11, a.k.
        my $configpm_bak = "$configpmtest.bak";
        unlink $configpm_bak if -f $configpm_bak;
        if( -f $configpmtest ) {
            if( rename $configpmtest, $configpm_bak ) {
				$CPAN::Frontend->mywarn(<<END);
Old configuration file $configpmtest
    moved to $configpm_bak
END
	    }
	}
	my $fh = FileHandle->new;
	if ($fh->open(">$configpmtest")) {
	    $fh->print("1;\n");
	    return $configpmtest;
	} else {
	    # Should never happen
	    Carp::confess("Cannot open >$configpmtest");
	}
    } else { return }
}

sub load {
    my($self, %args) = @_;
	$CPAN::Be_Silent++ if $args{be_silent};

    my(@miss);
    use Carp;
    unless ($INC{"CPAN/MyConfig.pm"}) { # this guy has settled his needs already
      eval {require CPAN::Config;}; # not everybody has one
    }
    unless ($dot_cpan++){
      unshift @INC, File::Spec->catdir($ENV{HOME},".cpan");
      eval {require CPAN::MyConfig;}; # override system wide settings
      shift @INC;
    }
    return unless @miss = $self->missing_config_data;

    require CPAN::FirstTime;
    my($configpm,$fh,$redo,$theycalled);
    $redo ||= "";
    $theycalled++ if @miss==1 && $miss[0] eq 'inhibit_startup_message';
    if (defined $INC{"CPAN/Config.pm"} && -w $INC{"CPAN/Config.pm"}) {
	$configpm = $INC{"CPAN/Config.pm"};
	$redo++;
    } elsif (defined $INC{"CPAN/MyConfig.pm"} && -w $INC{"CPAN/MyConfig.pm"}) {
	$configpm = $INC{"CPAN/MyConfig.pm"};
	$redo++;
    } else {
	my($path_to_cpan) = File::Basename::dirname($INC{"CPAN.pm"});
	my($configpmdir) = File::Spec->catdir($path_to_cpan,"CPAN");
	my($configpmtest) = File::Spec->catfile($configpmdir,"Config.pm");
        my $inc_key;
	if (-d $configpmdir or File::Path::mkpath($configpmdir)) {
	    $configpm = _configpmtest($configpmdir,$configpmtest);
            $inc_key = "CPAN/Config.pm";
	}
	unless ($configpm) {
	    $configpmdir = File::Spec->catdir($ENV{HOME},".cpan","CPAN");
	    File::Path::mkpath($configpmdir);
	    $configpmtest = File::Spec->catfile($configpmdir,"MyConfig.pm");
	    $configpm = _configpmtest($configpmdir,$configpmtest);
            $inc_key = "CPAN/MyConfig.pm";
	}
        if ($configpm) {
          $INC{$inc_key} = $configpm;
        } else {
          my $text = qq{WARNING: CPAN.pm is unable to } .
              qq{create a configuration file.};
          output($text, 'confess');
        }

    }
    local($") = ", ";
    $CPAN::Frontend->myprint(<<END) if $redo && ! $theycalled;
Sorry, we have to rerun the configuration dialog for CPAN.pm due to
the following indispensable but missing parameters:

@miss
END
    $CPAN::Frontend->myprint(qq{
$configpm initialized.
});

    sleep 2;
    CPAN::FirstTime::init($configpm, %args);
}

sub missing_config_data {
    my(@miss);
    for (
         "build_cache",
         "build_dir",
         "cache_metadata",
         "cpan_home",
         "ftp_proxy",
         "gzip",
         "http_proxy",
         "index_expire",
         "inhibit_startup_message",
         "keep_source_where",
         "make",
         "make_arg",
         "make_install_arg",
         "makepl_arg",
         "mbuild_arg",
         "mbuild_install_arg",
         "mbuild_install_build_command",
         "mbuildpl_arg",
         "no_proxy",
         "pager",
         "prerequisites_policy",
         "scan_cache",
         "tar",
         "unzip",
         "urllist",
        ) {
        next unless exists $keys{$_};
	push @miss, $_ unless defined $CPAN::Config->{$_};
    }
    return @miss;
}

sub help {
    $CPAN::Frontend->myprint(q[
Known options:
  defaults  reload default config values from disk
  commit    commit session changes to disk
  init      go through a dialog to set all parameters

You may edit key values in the follow fashion (the "o" is a literal
letter o):

  o conf build_cache 15

  o conf build_dir "/foo/bar"

  o conf urllist shift

  o conf urllist unshift ftp://ftp.foo.bar/

]);
    undef; #don't reprint CPAN::Config
}

sub cpl {
    my($word,$line,$pos) = @_;
    $word ||= "";
    CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
    my(@words) = split " ", substr($line,0,$pos+1);
    if (
	defined($words[2])
	and
	(
	 $words[2] =~ /list$/ && @words == 3
	 ||
	 $words[2] =~ /list$/ && @words == 4 && length($word)
	)
       ) {
	return grep /^\Q$word\E/, qw(splice shift unshift pop push);
    } elsif (@words >= 4) {
	return ();
    }
    my %seen;
    my(@o_conf) =  sort grep { !$seen{$_}++ }
        keys %can,
            keys %$CPAN::Config,
                keys %keys;
    return grep /^\Q$word\E/, @o_conf;
}


package ####::###### #hide from indexer
    CPAN::Config;
# note: J. Nick Koston wrote me that they are using
# CPAN::Config->commit although undocumented. I suggested
# CPAN::Shell->o("conf","commit") even when ugly it is at least
# documented

# that's why I added the CPAN::Config class with autoload and
# deprecated warning

use strict;
use vars qw($AUTOLOAD $VERSION);
$VERSION = sprintf "%.2f", substr(q$Rev: 488 $,4)/100;

# formerly CPAN::HandleConfig was known as CPAN::Config
sub AUTOLOAD {
  my($l) = $AUTOLOAD;
  $CPAN::Frontend->mywarn("Dispatching deprecated method '$l' to CPAN::HandleConfig");
  $l =~ s/.*:://;
  CPAN::HandleConfig->$l(@_);
}

1;

__END__
# Local Variables:
# mode: cperl
# cperl-indent-level: 4
# End:
Commit	Line	Data
e82b9348	1	package CPAN::HandleConfig;
e82b9348	2	use strict;
1a43333d	3	use vars qw(%can %keys $dot_cpan $VERSION);
1a43333d	4
44d21104	5	$VERSION = sprintf "%.2f", substr(q$Rev: 488 $,4)/100;
e82b9348	6
	7	%can = (
	8	'commit' => "Commit changes to disk",
	9	'defaults' => "Reload defaults from disk",
	10	'init' => "Interactive setting of all options",
	11	);
	12
	13	%keys = map { $_ => undef } qw(
	14	build_cache build_dir bzip2
9ddc4ed0	15	cache_metadata commandnumber_in_prompt cpan_home curl
e82b9348	16	dontload_hash
ca79d794	17	ftp ftp_passive ftp_proxy
e82b9348	18	getcwd gpg gzip
	19	histfile histsize http_proxy
	20	inactivity_timeout index_expire inhibit_startup_message
	21	keep_source_where
	22	lynx
	23	make make_arg make_install_arg make_install_make_command makepl_arg
	24	mbuild_arg mbuild_install_arg mbuild_install_build_command mbuildpl_arg
	25	ncftp ncftpget no_proxy pager
	26	prefer_installer prerequisites_policy
	27	scan_cache shell show_upload_date
	28	tar term_is_latin
	29	unzip urllist
	30	wait_list wget
	31	);
44d21104	32	if ($^O eq "MSWin32") {
	33	for my $k (qw(
	34	mbuild_install_build_command
	35	make_install_make_command
	36	)) {
	37	delete $keys{$k};
	38	if (exists $CPAN::Config->{$k}) {
	39	$CPAN::Frontend->mywarn("deleting previously set config variable ".
	40	"'$k' => '$CPAN::Config->{$k}'");
	41	delete $CPAN::Config->{$k};
	42	}
	43	}
	44	}
e82b9348	45
	46	# returns true on successful action
	47	sub edit {
	48	my($self,@args) = @_;
	49	return unless @args;
	50	CPAN->debug("self[$self]args[".join(" \| ",@args)."]");
	51	my($o,$str,$func,$args,$key_exists);
	52	$o = shift @args;
9ddc4ed0	53	$DB::single = 1;
e82b9348	54	if($can{$o}) {
9ddc4ed0	55	$self->$o(args => \@args);
e82b9348	56	return 1;
	57	} else {
	58	CPAN->debug("o[$o]") if $CPAN::DEBUG;
	59	unless (exists $keys{$o}) {
	60	$CPAN::Frontend->mywarn("Warning: unknown configuration variable '$o'\n");
	61	}
	62	if ($o =~ /list$/) {
	63	$func = shift @args;
	64	$func \|\|= "";
	65	CPAN->debug("func[$func]") if $CPAN::DEBUG;
	66	my $changed;
	67	# Let's avoid eval, it's easier to comprehend without.
	68	if ($func eq "push") {
	69	push @{$CPAN::Config->{$o}}, @args;
	70	$changed = 1;
	71	} elsif ($func eq "pop") {
	72	pop @{$CPAN::Config->{$o}};
	73	$changed = 1;
	74	} elsif ($func eq "shift") {
	75	shift @{$CPAN::Config->{$o}};
	76	$changed = 1;
	77	} elsif ($func eq "unshift") {
	78	unshift @{$CPAN::Config->{$o}}, @args;
	79	$changed = 1;
	80	} elsif ($func eq "splice") {
	81	splice @{$CPAN::Config->{$o}}, @args;
	82	$changed = 1;
	83	} elsif (@args) {
	84	$CPAN::Config->{$o} = [@args];
	85	$changed = 1;
	86	} else {
	87	$self->prettyprint($o);
	88	}
	89	if ($o eq "urllist" && $changed) {
	90	# reset the cached values
	91	undef $CPAN::FTP::Thesite;
	92	undef $CPAN::FTP::Themethod;
	93	}
	94	return $changed;
ca79d794	95	} elsif ($o =~ /_hash$/) {
44d21104	96	@args = () if @args==1 && $args[0] eq "";
ca79d794	97	push @args, "" if @args % 2;
	98	$CPAN::Config->{$o} = { @args };
	99	} else {
e82b9348	100	$CPAN::Config->{$o} = $args[0] if defined $args[0];
	101	$self->prettyprint($o);
	102	}
	103	}
	104	}
	105
	106	sub prettyprint {
	107	my($self,$k) = @_;
	108	my $v = $CPAN::Config->{$k};
	109	if (ref $v) {
9ddc4ed0	110	my(@report);
	111	if (ref $v eq "ARRAY") {
	112	@report = map {"\t[$_]\n"} @$v;
	113	} else {
	114	@report = map { sprintf("\t%-18s => %s\n",
	115	map { "[$_]" } $_,
	116	defined $v->{$_} ? $v->{$_} : "UNDEFINED"
	117	)} keys %$v;
	118	}
e82b9348	119	$CPAN::Frontend->myprint(
	120	join(
	121	"",
	122	sprintf(
	123	" %-18s\n",
	124	$k
	125	),
9ddc4ed0	126	@report
e82b9348	127	)
	128	);
	129	} elsif (defined $v) {
	130	$CPAN::Frontend->myprint(sprintf " %-18s [%s]\n", $k, $v);
	131	} else {
	132	$CPAN::Frontend->myprint(sprintf " %-18s [%s]\n", $k, "UNDEFINED");
	133	}
	134	}
	135
	136	sub commit {
9ddc4ed0	137	my($self,@args) = @_;
	138	my $configpm;
	139	if (@args) {
	140	if ($args[0] eq "args") {
	141	# we have not signed that contract
	142	} else {
	143	$configpm = $args[0];
	144	}
	145	}
e82b9348	146	unless (defined $configpm){
	147	$configpm \|\|= $INC{"CPAN/MyConfig.pm"};
	148	$configpm \|\|= $INC{"CPAN/Config.pm"};
	149	$configpm \|\| Carp::confess(q{
	150	CPAN::Config::commit called without an argument.
	151	Please specify a filename where to save the configuration or try
	152	"o conf init" to have an interactive course through configing.
	153	});
	154	}
	155	my($mode);
	156	if (-f $configpm) {
	157	$mode = (stat $configpm)[2];
	158	if ($mode && ! -w _) {
	159	Carp::confess("$configpm is not writable");
	160	}
	161	}
	162
	163	my $msg;
	164	$msg = <<EOF unless $configpm =~ /MyConfig/;
	165
	166	# This is CPAN.pm's systemwide configuration file. This file provides
	167	# defaults for users, and the values can be changed in a per-user
	168	# configuration file. The user-config file is being looked for as
	169	# ~/.cpan/CPAN/MyConfig.pm.
	170
	171	EOF
	172	$msg \|\|= "\n";
	173	my($fh) = FileHandle->new;
	174	rename $configpm, "$configpm~" if -f $configpm;
	175	open $fh, ">$configpm" or
	176	$CPAN::Frontend->mydie("Couldn't open >$configpm: $!");
	177	$fh->print(qq[$msg\$CPAN::Config = \{\n]);
	178	foreach (sort keys %$CPAN::Config) {
44d21104	179	unless (exists $keys{$_}) {
	180	$CPAN::Frontend->mywarn("Dropping unknown config variable '$_'\n");
	181	delete $CPAN::Config->{$_};
	182	next;
	183	}
e82b9348	184	$fh->print(
e82b9348	185	" '$_' => ",
ca79d794	186	$self->neatvalue($CPAN::Config->{$_}),
e82b9348	187	",\n"
	188	);
	189	}
	190
	191	$fh->print("};\n1;\n__END__\n");
	192	close $fh;
	193
	194	#$mode = 0444 \| ( $mode & 0111 ? 0111 : 0 );
	195	#chmod $mode, $configpm;
	196	###why was that so? $self->defaults;
9ddc4ed0	197	$CPAN::Frontend->myprint("commit: wrote '$configpm'\n");
e82b9348	198	1;
	199	}
	200
ca79d794	201	# stolen from MakeMaker; not taking the original because it is buggy;
	202	# bugreport will have to say: keys of hashes remain unquoted and can
	203	# produce syntax errors
	204	sub neatvalue {
	205	my($self, $v) = @_;
	206	return "undef" unless defined $v;
	207	my($t) = ref $v;
	208	return "q[$v]" unless $t;
	209	if ($t eq 'ARRAY') {
	210	my(@m, @neat);
	211	push @m, "[";
	212	foreach my $elem (@$v) {
	213	push @neat, "q[$elem]";
	214	}
	215	push @m, join ", ", @neat;
	216	push @m, "]";
	217	return join "", @m;
	218	}
	219	return "$v" unless $t eq 'HASH';
	220	my(@m, $key, $val);
	221	while (($key,$val) = each %$v){
	222	last unless defined $key; # cautious programming in case (undef,undef) is true
	223	push(@m,"q[$key]=>".$self->neatvalue($val)) ;
	224	}
	225	return "{ ".join(', ',@m)." }";
	226	}
	227
e82b9348	228	sub defaults {
e82b9348	229	my($self) = @_;
c9869e1c	230	my $done;
	231	for my $config (qw(CPAN/MyConfig.pm CPAN/Config.pm)) {
	232	CPAN::Shell->reload_this($config) and $done++;
	233	last if $done;
	234	}
e82b9348	235	1;
	236	}
	237
	238	sub init {
9ddc4ed0	239	my($self,@args) = @_;
e82b9348	240	undef $CPAN::Config->{'inhibit_startup_message'}; # lazy trick to
	241	# have the least
	242	# important
	243	# variable
	244	# undefined
9ddc4ed0	245	$self->load(@args);
e82b9348	246	1;
	247	}
	248
	249	# This is a piece of repeated code that is abstracted here for
	250	# maintainability. RMB
	251	#
	252	sub _configpmtest {
	253	my($configpmdir, $configpmtest) = @_;
	254	if (-w $configpmtest) {
	255	return $configpmtest;
	256	} elsif (-w $configpmdir) {
	257	#_#_# following code dumped core on me with 5.003_11, a.k.
	258	my $configpm_bak = "$configpmtest.bak";
	259	unlink $configpm_bak if -f $configpm_bak;
	260	if( -f $configpmtest ) {
	261	if( rename $configpmtest, $configpm_bak ) {
	262	$CPAN::Frontend->mywarn(<<END);
	263	Old configuration file $configpmtest
	264	moved to $configpm_bak
	265	END
	266	}
	267	}
	268	my $fh = FileHandle->new;
	269	if ($fh->open(">$configpmtest")) {
	270	$fh->print("1;\n");
	271	return $configpmtest;
	272	} else {
	273	# Should never happen
	274	Carp::confess("Cannot open >$configpmtest");
	275	}
	276	} else { return }
	277	}
	278
	279	sub load {
	280	my($self, %args) = @_;
	281	$CPAN::Be_Silent++ if $args{be_silent};
	282
	283	my(@miss);
	284	use Carp;
9ddc4ed0	285	unless ($INC{"CPAN/MyConfig.pm"}) { # this guy has settled his needs already
	286	eval {require CPAN::Config;}; # not everybody has one
	287	}
e82b9348	288	unless ($dot_cpan++){
e82b9348	289	unshift @INC, File::Spec->catdir($ENV{HOME},".cpan");
9ddc4ed0	290	eval {require CPAN::MyConfig;}; # override system wide settings
e82b9348	291	shift @INC;
	292	}
	293	return unless @miss = $self->missing_config_data;
	294
	295	require CPAN::FirstTime;
	296	my($configpm,$fh,$redo,$theycalled);
	297	$redo \|\|= "";
	298	$theycalled++ if @miss==1 && $miss[0] eq 'inhibit_startup_message';
	299	if (defined $INC{"CPAN/Config.pm"} && -w $INC{"CPAN/Config.pm"}) {
	300	$configpm = $INC{"CPAN/Config.pm"};
	301	$redo++;
	302	} elsif (defined $INC{"CPAN/MyConfig.pm"} && -w $INC{"CPAN/MyConfig.pm"}) {
	303	$configpm = $INC{"CPAN/MyConfig.pm"};
	304	$redo++;
	305	} else {
	306	my($path_to_cpan) = File::Basename::dirname($INC{"CPAN.pm"});
	307	my($configpmdir) = File::Spec->catdir($path_to_cpan,"CPAN");
	308	my($configpmtest) = File::Spec->catfile($configpmdir,"Config.pm");
c9869e1c	309	my $inc_key;
e82b9348	310	if (-d $configpmdir or File::Path::mkpath($configpmdir)) {
c9869e1c	311	$configpm = _configpmtest($configpmdir,$configpmtest);
c9869e1c	312	$inc_key = "CPAN/Config.pm";
e82b9348	313	}
	314	unless ($configpm) {
	315	$configpmdir = File::Spec->catdir($ENV{HOME},".cpan","CPAN");
	316	File::Path::mkpath($configpmdir);
	317	$configpmtest = File::Spec->catfile($configpmdir,"MyConfig.pm");
c9869e1c	318	$configpm = _configpmtest($configpmdir,$configpmtest);
c9869e1c	319	$inc_key = "CPAN/MyConfig.pm";
e82b9348	320	}
c9869e1c	321	if ($configpm) {
	322	$INC{$inc_key} = $configpm;
	323	} else {
	324	my $text = qq{WARNING: CPAN.pm is unable to } .
	325	qq{create a configuration file.};
	326	output($text, 'confess');
	327	}
	328
e82b9348	329	}
	330	local($") = ", ";
	331	$CPAN::Frontend->myprint(<<END) if $redo && ! $theycalled;
0cf35e6a	332	Sorry, we have to rerun the configuration dialog for CPAN.pm due to
0cf35e6a	333	the following indispensable but missing parameters:
e82b9348	334
	335	@miss
	336	END
	337	$CPAN::Frontend->myprint(qq{
	338	$configpm initialized.
	339	});
	340
	341	sleep 2;
	342	CPAN::FirstTime::init($configpm, %args);
	343	}
	344
	345	sub missing_config_data {
	346	my(@miss);
	347	for (
0cf35e6a	348	"build_cache",
	349	"build_dir",
	350	"cache_metadata",
	351	"cpan_home",
	352	"ftp_proxy",
	353	"gzip",
	354	"http_proxy",
	355	"index_expire",
	356	"inhibit_startup_message",
	357	"keep_source_where",
	358	"make",
	359	"make_arg",
	360	"make_install_arg",
	361	"makepl_arg",
	362	"mbuild_arg",
	363	"mbuild_install_arg",
	364	"mbuild_install_build_command",
	365	"mbuildpl_arg",
	366	"no_proxy",
e82b9348	367	"pager",
e82b9348	368	"prerequisites_policy",
0cf35e6a	369	"scan_cache",
	370	"tar",
	371	"unzip",
	372	"urllist",
e82b9348	373	) {
44d21104	374	next unless exists $keys{$_};
e82b9348	375	push @miss, $_ unless defined $CPAN::Config->{$_};
	376	}
	377	return @miss;
	378	}
	379
e82b9348	380	sub help {
	381	$CPAN::Frontend->myprint(q[
	382	Known options:
	383	defaults reload default config values from disk
	384	commit commit session changes to disk
	385	init go through a dialog to set all parameters
	386
	387	You may edit key values in the follow fashion (the "o" is a literal
	388	letter o):
	389
	390	o conf build_cache 15
	391
	392	o conf build_dir "/foo/bar"
	393
	394	o conf urllist shift
	395
	396	o conf urllist unshift ftp://ftp.foo.bar/
	397
	398	]);
	399	undef; #don't reprint CPAN::Config
	400	}
	401
	402	sub cpl {
	403	my($word,$line,$pos) = @_;
	404	$word \|\|= "";
	405	CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
	406	my(@words) = split " ", substr($line,0,$pos+1);
	407	if (
	408	defined($words[2])
	409	and
	410	(
	411	$words[2] =~ /list$/ && @words == 3
	412	\|\|
	413	$words[2] =~ /list$/ && @words == 4 && length($word)
	414	)
	415	) {
	416	return grep /^\Q$word\E/, qw(splice shift unshift pop push);
	417	} elsif (@words >= 4) {
	418	return ();
	419	}
	420	my %seen;
	421	my(@o_conf) = sort grep { !$seen{$_}++ }
	422	keys %can,
	423	keys %$CPAN::Config,
	424	keys %keys;
	425	return grep /^\Q$word\E/, @o_conf;
	426	}
	427
9ddc4ed0	428
	429	package ####::###### #hide from indexer
	430	CPAN::Config;
	431	# note: J. Nick Koston wrote me that they are using
	432	# CPAN::Config->commit although undocumented. I suggested
	433	# CPAN::Shell->o("conf","commit") even when ugly it is at least
	434	# documented
	435
	436	# that's why I added the CPAN::Config class with autoload and
	437	# deprecated warning
	438
	439	use strict;
	440	use vars qw($AUTOLOAD $VERSION);
44d21104	441	$VERSION = sprintf "%.2f", substr(q$Rev: 488 $,4)/100;
9ddc4ed0	442
	443	# formerly CPAN::HandleConfig was known as CPAN::Config
	444	sub AUTOLOAD {
	445	my($l) = $AUTOLOAD;
	446	$CPAN::Frontend->mywarn("Dispatching deprecated method '$l' to CPAN::HandleConfig");
	447	$l =~ s/.*:://;
	448	CPAN::HandleConfig->$l(@_);
	449	}
	450
e82b9348	451	1;
0cf35e6a	452
	453	__END__
	454	# Local Variables:
	455	# mode: cperl
ca79d794	456	# cperl-indent-level: 4
0cf35e6a	457	# End: