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

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

$VERSION = sprintf "%.6f", substr(q$Rev: 809 $,4)/1000000 + 5.4;

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

%keys = map { $_ => undef } (
                             #  allow_unauthenticated ?? some day...
                             "build_cache",
                             "build_dir",
                             "bzip2",
                             "cache_metadata",
                             "check_sigs",
                             "colorize_output",
                             "colorize_print",
                             "colorize_warn",
                             "commandnumber_in_prompt",
                             "cpan_home",
                             "curl",
                             "dontload_hash", # deprecated after 1.83_68 (rev. 581)
                             "dontload_list",
                             "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",
                             "password",
                             "prefer_installer",
                             "prerequisites_policy",
                             "proxy_pass",
                             "proxy_user",
                             "scan_cache",
                             "shell",
                             "show_upload_date",
                             "tar",
                             "term_is_latin",
                             "term_ornaments",
                             "test_report",
                             "unzip",
                             "urllist",
                             "username",
                             "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}) {
            for ("deleting previously set config variable '$k' => '$CPAN::Config->{$k}'") {
                $CPAN::Frontend ? $CPAN::Frontend->mywarn($_) : warn $_;
            }
            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); # o conf init => sub init => sub load
	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 ($changed) {
                if ($o eq "urllist") {
                    # reset the cached values
                    undef $CPAN::FTP::Thesite;
                    undef $CPAN::FTP::Themethod;
                } elsif ($o eq "dontload_list") {
                    # empty it, it will be built up again
                    $CPAN::META->{dontload_hash} = {};
                }
            }
            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);
            return 1;
	}
    }
}

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;
}

=head2 C<< CLASS->safe_quote ITEM >>

Quotes an item to become safe against spaces
in shell interpolation. An item is enclosed
in double quotes if:

  - the item contains spaces in the middle
  - the item does not start with a quote

This happens to avoid shell interpolation
problems when whitespace is present in
directory names.

This method uses C<commands_quote> to determine
the correct quote. If C<commands_quote> is
a space, no quoting will take place.


if it starts and ends with the same quote character: leave it as it is

if it contains no whitespace: leave it as it is

if it contains whitespace, then

if it contains quotes: better leave it as it is

else: quote it with the correct quote type for the box we're on

=cut

{
    # Instead of patching the guess, set commands_quote
    # to the right value
    my ($quotes,$use_quote)
        = $^O eq 'MSWin32'
            ? ('"', '"')
                : (q<"'>, "'")
                    ;

    sub safe_quote {
        my ($self, $command) = @_;
        # Set up quote/default quote
        my $quote = $CPAN::Config->{commands_quote} || $quotes;

        if ($quote ne ' '
            and $command =~ /\s/
            and $command !~ /[$quote]/) {
            return qq<$use_quote$command$use_quote>
        }
        return $command;
    }
}

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 require_myconfig_or_config () {
    return if $INC{"CPAN/MyConfig.pm"};
    local @INC = @INC;
    my $home = home();
    unshift @INC, File::Spec->catdir($home,'.cpan');
    eval { require CPAN::MyConfig };
    my $err_myconfig = $@;
    if ($err_myconfig and $err_myconfig !~ m#locate CPAN/MyConfig\.pm#) {
        die "Error while requiring CPAN::MyConfig:\n$err_myconfig";
    }
    unless ($INC{"CPAN/MyConfig.pm"}) { # this guy has settled his needs already
      eval {require CPAN::Config;}; # not everybody has one
      my $err_config = $@;
      if ($err_config and $err_config !~ m#locate CPAN/Config\.pm#) {
          die "Error while requiring CPAN::Config:\n$err_config";
      }
    }
}

sub home () {
    my $home;
    if ($CPAN::META->has_usable("File::HomeDir")) {
        $home = File::HomeDir->my_data;
    } else {
        $home = $ENV{HOME};
    }
    $home;
}

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

    my(@miss);
    use Carp;
    require_myconfig_or_config;
    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) {
	    $configpmdir = File::Spec->catdir(home,".cpan","CPAN");
	    File::Path::mkpath($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($") = ", ";
    if ($redo && ! $theycalled){
        $CPAN::Frontend->myprint(<<END);
Sorry, we have to rerun the configuration dialog for CPAN.pm due to
the following indispensable but missing parameters:

@miss
END
        $args{args} = ["\\b".join("|",@miss)."\\b"];
    }
    $CPAN::Frontend->myprint(qq{
$configpm initialized.
});
    CPAN::FirstTime::init($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:
  commit    commit session changes to disk
  defaults  reload default config values from disk
  help      this help
  init      go through a dialog to set all parameters

Edit key values as in the following (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/
  o conf inhibit_startup_message 1

]);
    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
        $words[2] =~ /list$/
        and
	(
	 @words == 3
	 ||
	 @words == 4 && length($word)
	)
       ) {
	return grep /^\Q$word\E/, qw(splice shift unshift pop push);
    } elsif (defined($words[2])
             and
             $words[2] eq "init"
             and
            (
             @words == 3
             ||
             @words == 4 && length($word)
            )) {
	return sort grep /^\Q$word\E/, keys %keys;
    } elsif (@words >= 4) {
	return ();
    }
    my %seen;
    my(@o_conf) =  sort grep { !$seen{$_}++ }
        keys %can,
            keys %$CPAN::Config,
                keys %keys;
    return grep /^\Q$word\E/, @o_conf;
}


package
    CPAN::Config; ####::###### #hide from indexer
# 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: 809 $,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;
87892b73	3	use vars qw(%can %keys $VERSION);
1a43333d	4
8962fc49	5	$VERSION = sprintf "%.6f", substr(q$Rev: 809 $,4)/1000000 + 5.4;
e82b9348	6
e82b9348	7	%can = (
4d1321a7	8	commit => "Commit changes to disk",
	9	defaults => "Reload defaults from disk",
	10	help => "Short help about 'o conf' usage",
	11	init => "Interactive setting of all options",
e82b9348	12	);
e82b9348	13
4d1321a7	14	%keys = map { $_ => undef } (
ed84aac9	15	# allow_unauthenticated ?? some day...
4d1321a7	16	"build_cache",
	17	"build_dir",
	18	"bzip2",
	19	"cache_metadata",
ed84aac9	20	"check_sigs",
8962fc49	21	"colorize_output",
	22	"colorize_print",
	23	"colorize_warn",
4d1321a7	24	"commandnumber_in_prompt",
	25	"cpan_home",
	26	"curl",
	27	"dontload_hash", # deprecated after 1.83_68 (rev. 581)
	28	"dontload_list",
	29	"ftp",
	30	"ftp_passive",
	31	"ftp_proxy",
	32	"getcwd",
	33	"gpg",
	34	"gzip",
	35	"histfile",
	36	"histsize",
	37	"http_proxy",
	38	"inactivity_timeout",
	39	"index_expire",
	40	"inhibit_startup_message",
	41	"keep_source_where",
	42	"lynx",
	43	"make",
	44	"make_arg",
	45	"make_install_arg",
	46	"make_install_make_command",
	47	"makepl_arg",
	48	"mbuild_arg",
	49	"mbuild_install_arg",
	50	"mbuild_install_build_command",
	51	"mbuildpl_arg",
	52	"ncftp",
	53	"ncftpget",
	54	"no_proxy",
	55	"pager",
ed84aac9	56	"password",
4d1321a7	57	"prefer_installer",
4d1321a7	58	"prerequisites_policy",
8962fc49	59	"proxy_pass",
8962fc49	60	"proxy_user",
4d1321a7	61	"scan_cache",
	62	"shell",
	63	"show_upload_date",
	64	"tar",
	65	"term_is_latin",
ed84aac9	66	"term_ornaments",
8962fc49	67	"test_report",
4d1321a7	68	"unzip",
4d1321a7	69	"urllist",
ed84aac9	70	"username",
4d1321a7	71	"wait_list",
	72	"wget",
	73	);
44d21104	74	if ($^O eq "MSWin32") {
	75	for my $k (qw(
	76	mbuild_install_build_command
	77	make_install_make_command
	78	)) {
	79	delete $keys{$k};
	80	if (exists $CPAN::Config->{$k}) {
87892b73	81	for ("deleting previously set config variable '$k' => '$CPAN::Config->{$k}'") {
	82	$CPAN::Frontend ? $CPAN::Frontend->mywarn($_) : warn $_;
	83	}
44d21104	84	delete $CPAN::Config->{$k};
	85	}
	86	}
	87	}
e82b9348	88
	89	# returns true on successful action
	90	sub edit {
	91	my($self,@args) = @_;
	92	return unless @args;
	93	CPAN->debug("self[$self]args[".join(" \| ",@args)."]");
	94	my($o,$str,$func,$args,$key_exists);
	95	$o = shift @args;
9ddc4ed0	96	$DB::single = 1;
e82b9348	97	if($can{$o}) {
8962fc49	98	$self->$o(args => \@args); # o conf init => sub init => sub load
e82b9348	99	return 1;
	100	} else {
	101	CPAN->debug("o[$o]") if $CPAN::DEBUG;
	102	unless (exists $keys{$o}) {
	103	$CPAN::Frontend->mywarn("Warning: unknown configuration variable '$o'\n");
	104	}
	105	if ($o =~ /list$/) {
	106	$func = shift @args;
	107	$func \|\|= "";
	108	CPAN->debug("func[$func]") if $CPAN::DEBUG;
	109	my $changed;
	110	# Let's avoid eval, it's easier to comprehend without.
	111	if ($func eq "push") {
	112	push @{$CPAN::Config->{$o}}, @args;
	113	$changed = 1;
	114	} elsif ($func eq "pop") {
	115	pop @{$CPAN::Config->{$o}};
	116	$changed = 1;
	117	} elsif ($func eq "shift") {
	118	shift @{$CPAN::Config->{$o}};
	119	$changed = 1;
	120	} elsif ($func eq "unshift") {
	121	unshift @{$CPAN::Config->{$o}}, @args;
	122	$changed = 1;
	123	} elsif ($func eq "splice") {
	124	splice @{$CPAN::Config->{$o}}, @args;
	125	$changed = 1;
	126	} elsif (@args) {
	127	$CPAN::Config->{$o} = [@args];
	128	$changed = 1;
	129	} else {
	130	$self->prettyprint($o);
	131	}
4d1321a7	132	if ($changed) {
	133	if ($o eq "urllist") {
	134	# reset the cached values
	135	undef $CPAN::FTP::Thesite;
	136	undef $CPAN::FTP::Themethod;
	137	} elsif ($o eq "dontload_list") {
	138	# empty it, it will be built up again
	139	$CPAN::META->{dontload_hash} = {};
	140	}
e82b9348	141	}
e82b9348	142	return $changed;
ca79d794	143	} elsif ($o =~ /_hash$/) {
44d21104	144	@args = () if @args==1 && $args[0] eq "";
ca79d794	145	push @args, "" if @args % 2;
	146	$CPAN::Config->{$o} = { @args };
	147	} else {
e82b9348	148	$CPAN::Config->{$o} = $args[0] if defined $args[0];
e82b9348	149	$self->prettyprint($o);
8962fc49	150	return 1;
e82b9348	151	}
	152	}
	153	}
	154
	155	sub prettyprint {
	156	my($self,$k) = @_;
	157	my $v = $CPAN::Config->{$k};
	158	if (ref $v) {
9ddc4ed0	159	my(@report);
	160	if (ref $v eq "ARRAY") {
	161	@report = map {"\t[$_]\n"} @$v;
	162	} else {
	163	@report = map { sprintf("\t%-18s => %s\n",
	164	map { "[$_]" } $_,
	165	defined $v->{$_} ? $v->{$_} : "UNDEFINED"
	166	)} keys %$v;
	167	}
e82b9348	168	$CPAN::Frontend->myprint(
	169	join(
	170	"",
	171	sprintf(
	172	" %-18s\n",
	173	$k
	174	),
9ddc4ed0	175	@report
e82b9348	176	)
	177	);
	178	} elsif (defined $v) {
	179	$CPAN::Frontend->myprint(sprintf " %-18s [%s]\n", $k, $v);
	180	} else {
	181	$CPAN::Frontend->myprint(sprintf " %-18s [%s]\n", $k, "UNDEFINED");
	182	}
	183	}
	184
	185	sub commit {
9ddc4ed0	186	my($self,@args) = @_;
	187	my $configpm;
	188	if (@args) {
	189	if ($args[0] eq "args") {
	190	# we have not signed that contract
	191	} else {
	192	$configpm = $args[0];
	193	}
	194	}
e82b9348	195	unless (defined $configpm){
	196	$configpm \|\|= $INC{"CPAN/MyConfig.pm"};
	197	$configpm \|\|= $INC{"CPAN/Config.pm"};
	198	$configpm \|\| Carp::confess(q{
	199	CPAN::Config::commit called without an argument.
	200	Please specify a filename where to save the configuration or try
	201	"o conf init" to have an interactive course through configing.
	202	});
	203	}
	204	my($mode);
	205	if (-f $configpm) {
	206	$mode = (stat $configpm)[2];
	207	if ($mode && ! -w _) {
	208	Carp::confess("$configpm is not writable");
	209	}
	210	}
	211
	212	my $msg;
	213	$msg = <<EOF unless $configpm =~ /MyConfig/;
	214
	215	# This is CPAN.pm's systemwide configuration file. This file provides
	216	# defaults for users, and the values can be changed in a per-user
	217	# configuration file. The user-config file is being looked for as
	218	# ~/.cpan/CPAN/MyConfig.pm.
	219
	220	EOF
	221	$msg \|\|= "\n";
	222	my($fh) = FileHandle->new;
	223	rename $configpm, "$configpm~" if -f $configpm;
	224	open $fh, ">$configpm" or
	225	$CPAN::Frontend->mydie("Couldn't open >$configpm: $!");
	226	$fh->print(qq[$msg\$CPAN::Config = \{\n]);
	227	foreach (sort keys %$CPAN::Config) {
44d21104	228	unless (exists $keys{$_}) {
	229	$CPAN::Frontend->mywarn("Dropping unknown config variable '$_'\n");
	230	delete $CPAN::Config->{$_};
	231	next;
	232	}
e82b9348	233	$fh->print(
e82b9348	234	" '$_' => ",
ca79d794	235	$self->neatvalue($CPAN::Config->{$_}),
e82b9348	236	",\n"
	237	);
	238	}
	239
	240	$fh->print("};\n1;\n__END__\n");
	241	close $fh;
	242
	243	#$mode = 0444 \| ( $mode & 0111 ? 0111 : 0 );
	244	#chmod $mode, $configpm;
	245	###why was that so? $self->defaults;
9ddc4ed0	246	$CPAN::Frontend->myprint("commit: wrote '$configpm'\n");
e82b9348	247	1;
	248	}
	249
ca79d794	250	# stolen from MakeMaker; not taking the original because it is buggy;
	251	# bugreport will have to say: keys of hashes remain unquoted and can
	252	# produce syntax errors
	253	sub neatvalue {
	254	my($self, $v) = @_;
	255	return "undef" unless defined $v;
	256	my($t) = ref $v;
	257	return "q[$v]" unless $t;
	258	if ($t eq 'ARRAY') {
	259	my(@m, @neat);
	260	push @m, "[";
	261	foreach my $elem (@$v) {
	262	push @neat, "q[$elem]";
	263	}
	264	push @m, join ", ", @neat;
	265	push @m, "]";
	266	return join "", @m;
	267	}
	268	return "$v" unless $t eq 'HASH';
	269	my(@m, $key, $val);
	270	while (($key,$val) = each %$v){
	271	last unless defined $key; # cautious programming in case (undef,undef) is true
	272	push(@m,"q[$key]=>".$self->neatvalue($val)) ;
	273	}
	274	return "{ ".join(', ',@m)." }";
	275	}
	276
e82b9348	277	sub defaults {
e82b9348	278	my($self) = @_;
c9869e1c	279	my $done;
	280	for my $config (qw(CPAN/MyConfig.pm CPAN/Config.pm)) {
	281	CPAN::Shell->reload_this($config) and $done++;
	282	last if $done;
	283	}
e82b9348	284	1;
	285	}
	286
ed84aac9	287	=head2 C<< CLASS->safe_quote ITEM >>
	288
	289	Quotes an item to become safe against spaces
	290	in shell interpolation. An item is enclosed
	291	in double quotes if:
	292
	293	- the item contains spaces in the middle
	294	- the item does not start with a quote
	295
	296	This happens to avoid shell interpolation
	297	problems when whitespace is present in
	298	directory names.
	299
	300	This method uses C<commands_quote> to determine
	301	the correct quote. If C<commands_quote> is
	302	a space, no quoting will take place.
	303
	304
	305	if it starts and ends with the same quote character: leave it as it is
	306
	307	if it contains no whitespace: leave it as it is
	308
	309	if it contains whitespace, then
	310
	311	if it contains quotes: better leave it as it is
	312
	313	else: quote it with the correct quote type for the box we're on
	314
	315	=cut
	316
	317	{
	318	# Instead of patching the guess, set commands_quote
	319	# to the right value
	320	my ($quotes,$use_quote)
	321	= $^O eq 'MSWin32'
	322	? ('"', '"')
	323	: (q<"'>, "'")
	324	;
	325
	326	sub safe_quote {
	327	my ($self, $command) = @_;
	328	# Set up quote/default quote
	329	my $quote = $CPAN::Config->{commands_quote} \|\| $quotes;
	330
	331	if ($quote ne ' '
	332	and $command =~ /\s/
	333	and $command !~ /[$quote]/) {
	334	return qq<$use_quote$command$use_quote>
	335	}
	336	return $command;
	337	}
	338	}
	339
e82b9348	340	sub init {
9ddc4ed0	341	my($self,@args) = @_;
e82b9348	342	undef $CPAN::Config->{'inhibit_startup_message'}; # lazy trick to
	343	# have the least
	344	# important
	345	# variable
	346	# undefined
9ddc4ed0	347	$self->load(@args);
e82b9348	348	1;
	349	}
	350
	351	# This is a piece of repeated code that is abstracted here for
	352	# maintainability. RMB
	353	#
	354	sub _configpmtest {
	355	my($configpmdir, $configpmtest) = @_;
	356	if (-w $configpmtest) {
	357	return $configpmtest;
	358	} elsif (-w $configpmdir) {
	359	#_#_# following code dumped core on me with 5.003_11, a.k.
	360	my $configpm_bak = "$configpmtest.bak";
	361	unlink $configpm_bak if -f $configpm_bak;
	362	if( -f $configpmtest ) {
	363	if( rename $configpmtest, $configpm_bak ) {
	364	$CPAN::Frontend->mywarn(<<END);
	365	Old configuration file $configpmtest
	366	moved to $configpm_bak
	367	END
	368	}
	369	}
	370	my $fh = FileHandle->new;
	371	if ($fh->open(">$configpmtest")) {
	372	$fh->print("1;\n");
	373	return $configpmtest;
	374	} else {
	375	# Should never happen
	376	Carp::confess("Cannot open >$configpmtest");
	377	}
	378	} else { return }
	379	}
	380
87892b73	381	sub require_myconfig_or_config () {
	382	return if $INC{"CPAN/MyConfig.pm"};
	383	local @INC = @INC;
	384	my $home = home();
	385	unshift @INC, File::Spec->catdir($home,'.cpan');
	386	eval { require CPAN::MyConfig };
ed84aac9	387	my $err_myconfig = $@;
	388	if ($err_myconfig and $err_myconfig !~ m#locate CPAN/MyConfig\.pm#) {
	389	die "Error while requiring CPAN::MyConfig:\n$err_myconfig";
	390	}
87892b73	391	unless ($INC{"CPAN/MyConfig.pm"}) { # this guy has settled his needs already
87892b73	392	eval {require CPAN::Config;}; # not everybody has one
ed84aac9	393	my $err_config = $@;
	394	if ($err_config and $err_config !~ m#locate CPAN/Config\.pm#) {
	395	die "Error while requiring CPAN::Config:\n$err_config";
	396	}
87892b73	397	}
	398	}
	399
	400	sub home () {
	401	my $home;
	402	if ($CPAN::META->has_usable("File::HomeDir")) {
	403	$home = File::HomeDir->my_data;
	404	} else {
	405	$home = $ENV{HOME};
	406	}
	407	$home;
	408	}
	409
e82b9348	410	sub load {
	411	my($self, %args) = @_;
	412	$CPAN::Be_Silent++ if $args{be_silent};
	413
	414	my(@miss);
	415	use Carp;
87892b73	416	require_myconfig_or_config;
e82b9348	417	return unless @miss = $self->missing_config_data;
	418
	419	require CPAN::FirstTime;
	420	my($configpm,$fh,$redo,$theycalled);
	421	$redo \|\|= "";
	422	$theycalled++ if @miss==1 && $miss[0] eq 'inhibit_startup_message';
	423	if (defined $INC{"CPAN/Config.pm"} && -w $INC{"CPAN/Config.pm"}) {
	424	$configpm = $INC{"CPAN/Config.pm"};
	425	$redo++;
	426	} elsif (defined $INC{"CPAN/MyConfig.pm"} && -w $INC{"CPAN/MyConfig.pm"}) {
	427	$configpm = $INC{"CPAN/MyConfig.pm"};
	428	$redo++;
	429	} else {
	430	my($path_to_cpan) = File::Basename::dirname($INC{"CPAN.pm"});
	431	my($configpmdir) = File::Spec->catdir($path_to_cpan,"CPAN");
	432	my($configpmtest) = File::Spec->catfile($configpmdir,"Config.pm");
c9869e1c	433	my $inc_key;
e82b9348	434	if (-d $configpmdir or File::Path::mkpath($configpmdir)) {
c9869e1c	435	$configpm = _configpmtest($configpmdir,$configpmtest);
c9869e1c	436	$inc_key = "CPAN/Config.pm";
e82b9348	437	}
e82b9348	438	unless ($configpm) {
87892b73	439	$configpmdir = File::Spec->catdir(home,".cpan","CPAN");
e82b9348	440	File::Path::mkpath($configpmdir);
e82b9348	441	$configpmtest = File::Spec->catfile($configpmdir,"MyConfig.pm");
c9869e1c	442	$configpm = _configpmtest($configpmdir,$configpmtest);
c9869e1c	443	$inc_key = "CPAN/MyConfig.pm";
e82b9348	444	}
c9869e1c	445	if ($configpm) {
	446	$INC{$inc_key} = $configpm;
	447	} else {
	448	my $text = qq{WARNING: CPAN.pm is unable to } .
	449	qq{create a configuration file.};
	450	output($text, 'confess');
	451	}
	452
e82b9348	453	}
e82b9348	454	local($") = ", ";
8962fc49	455	if ($redo && ! $theycalled){
8962fc49	456	$CPAN::Frontend->myprint(<<END);
0cf35e6a	457	Sorry, we have to rerun the configuration dialog for CPAN.pm due to
0cf35e6a	458	the following indispensable but missing parameters:
e82b9348	459
	460	@miss
	461	END
8962fc49	462	$args{args} = ["\\b".join("\|",@miss)."\\b"];
8962fc49	463	}
e82b9348	464	$CPAN::Frontend->myprint(qq{
	465	$configpm initialized.
	466	});
e82b9348	467	CPAN::FirstTime::init($configpm, %args);
	468	}
	469
	470	sub missing_config_data {
	471	my(@miss);
	472	for (
0cf35e6a	473	"build_cache",
	474	"build_dir",
	475	"cache_metadata",
	476	"cpan_home",
	477	"ftp_proxy",
ed84aac9	478	#"gzip",
0cf35e6a	479	"http_proxy",
	480	"index_expire",
	481	"inhibit_startup_message",
	482	"keep_source_where",
ed84aac9	483	#"make",
0cf35e6a	484	"make_arg",
	485	"make_install_arg",
	486	"makepl_arg",
	487	"mbuild_arg",
	488	"mbuild_install_arg",
	489	"mbuild_install_build_command",
	490	"mbuildpl_arg",
	491	"no_proxy",
ed84aac9	492	#"pager",
e82b9348	493	"prerequisites_policy",
0cf35e6a	494	"scan_cache",
ed84aac9	495	#"tar",
ed84aac9	496	#"unzip",
0cf35e6a	497	"urllist",
e82b9348	498	) {
44d21104	499	next unless exists $keys{$_};
e82b9348	500	push @miss, $_ unless defined $CPAN::Config->{$_};
	501	}
	502	return @miss;
	503	}
	504
e82b9348	505	sub help {
	506	$CPAN::Frontend->myprint(q[
	507	Known options:
e82b9348	508	commit commit session changes to disk
4d1321a7	509	defaults reload default config values from disk
4d1321a7	510	help this help
e82b9348	511	init go through a dialog to set all parameters
e82b9348	512
4d1321a7	513	Edit key values as in the following (the "o" is a literal letter o):
e82b9348	514	o conf build_cache 15
e82b9348	515	o conf build_dir "/foo/bar"
e82b9348	516	o conf urllist shift
e82b9348	517	o conf urllist unshift ftp://ftp.foo.bar/
4d1321a7	518	o conf inhibit_startup_message 1
e82b9348	519
	520	]);
	521	undef; #don't reprint CPAN::Config
	522	}
	523
	524	sub cpl {
	525	my($word,$line,$pos) = @_;
	526	$word \|\|= "";
	527	CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
	528	my(@words) = split " ", substr($line,0,$pos+1);
	529	if (
	530	defined($words[2])
	531	and
8962fc49	532	$words[2] =~ /list$/
8962fc49	533	and
e82b9348	534	(
8962fc49	535	@words == 3
e82b9348	536	\|\|
8962fc49	537	@words == 4 && length($word)
e82b9348	538	)
	539	) {
	540	return grep /^\Q$word\E/, qw(splice shift unshift pop push);
8962fc49	541	} elsif (defined($words[2])
	542	and
	543	$words[2] eq "init"
	544	and
	545	(
	546	@words == 3
	547	\|\|
	548	@words == 4 && length($word)
	549	)) {
	550	return sort grep /^\Q$word\E/, keys %keys;
e82b9348	551	} elsif (@words >= 4) {
	552	return ();
	553	}
	554	my %seen;
	555	my(@o_conf) = sort grep { !$seen{$_}++ }
	556	keys %can,
	557	keys %$CPAN::Config,
	558	keys %keys;
	559	return grep /^\Q$word\E/, @o_conf;
	560	}
	561
9ddc4ed0	562
4d1321a7	563	package
4d1321a7	564	CPAN::Config; ####::###### #hide from indexer
9ddc4ed0	565	# note: J. Nick Koston wrote me that they are using
	566	# CPAN::Config->commit although undocumented. I suggested
	567	# CPAN::Shell->o("conf","commit") even when ugly it is at least
	568	# documented
	569
	570	# that's why I added the CPAN::Config class with autoload and
	571	# deprecated warning
	572
	573	use strict;
	574	use vars qw($AUTOLOAD $VERSION);
8962fc49	575	$VERSION = sprintf "%.2f", substr(q$Rev: 809 $,4)/100;
9ddc4ed0	576
	577	# formerly CPAN::HandleConfig was known as CPAN::Config
	578	sub AUTOLOAD {
	579	my($l) = $AUTOLOAD;
	580	$CPAN::Frontend->mywarn("Dispatching deprecated method '$l' to CPAN::HandleConfig");
	581	$l =~ s/.*:://;
	582	CPAN::HandleConfig->$l(@_);
	583	}
	584
e82b9348	585	1;
0cf35e6a	586
	587	__END__
	588	# Local Variables:
	589	# mode: cperl
ca79d794	590	# cperl-indent-level: 4
0cf35e6a	591	# End: