1 package CPAN::HandleConfig;
3 use vars qw(%can %keys $loading $VERSION);
11 CPAN::HandleConfig - internal configuration handling for CPAN.pm
15 $VERSION = "5.5008"; # see also CPAN::Config::VERSION at end of file
18 commit => "Commit changes to disk",
19 defaults => "Reload defaults from disk",
20 help => "Short help about 'o conf' usage",
21 init => "Interactive setting of all options",
24 # Q: where is the "How do I add a new config option" HOWTO?
25 # A1: svn diff -r 757:758 # where dagolden added test_report [git e997b71de88f1019a1472fc13cb97b1b7f96610f]
26 # A2: svn diff -r 985:986 # where andk added yaml_module [git 312b6d9b12b1bdec0b6e282d853482145475021f]
27 # A3: 1. add new config option to %keys below
28 # 2. add a Pod description in CPAN::FirstTime; it should include a
29 # prompt line; see others for examples
30 # 3. add a "matcher" section in CPAN::FirstTime::init that includes
31 # a prompt function; see others for examples
32 # 4. add config option to documentation section in CPAN.pm
34 %keys = map { $_ => undef }
41 "build_requires_install_policy",
45 "cleanup_after_install",
50 "commandnumber_in_prompt",
52 "connect_to_internet_ok",
55 "dontload_hash", # deprecated after 1.83_68 (rev. 581)
71 "inhibit_startup_message",
73 "load_module_verbosity",
78 "make_install_make_command",
82 "mbuild_install_build_command",
93 "prefer_external_tar",
96 "prerequisites_policy",
103 "show_unparsable_versions",
105 "show_zero_versions",
112 "trust_test_report_history",
115 "use_prompt_default",
125 my %prefssupport = map { $_ => 1 }
127 "build_requires_install_policy",
130 "make_install_make_command",
135 # returns true on successful action
137 my($self,@args) = @_;
139 CPAN->debug("self[$self]args[".join(" | ",@args)."]");
140 my($o,$str,$func,$args,$key_exists);
143 my $success = $self->$o(args => \@args); # o conf init => sub init => sub load
145 die "Panic: could not configure CPAN.pm for args [@args]. Giving up.";
148 CPAN->debug("o[$o]") if $CPAN::DEBUG;
149 unless (exists $keys{$o}) {
150 $CPAN::Frontend->mywarn("Warning: unknown configuration variable '$o'\n");
155 # one day I used randomize_urllist for a boolean, so we must
156 # list them explicitly --ak
158 } elsif ($o =~ /^(wait_list|urllist|dontload_list|plugin_list)$/) {
166 CPAN->debug("func[$func]args[@args]") if $CPAN::DEBUG;
167 # Let's avoid eval, it's easier to comprehend without.
168 if ($func eq "push") {
169 push @{$CPAN::Config->{$o}}, @args;
171 } elsif ($func eq "pop") {
172 pop @{$CPAN::Config->{$o}};
174 } elsif ($func eq "shift") {
175 shift @{$CPAN::Config->{$o}};
177 } elsif ($func eq "unshift") {
178 unshift @{$CPAN::Config->{$o}}, @args;
180 } elsif ($func eq "splice") {
181 my $offset = shift @args || 0;
182 my $length = shift @args || 0;
183 splice @{$CPAN::Config->{$o}}, $offset, $length, @args; # may warn
186 $CPAN::Config->{$o} = [$func, @args];
189 $self->prettyprint($o);
192 if ($o eq "urllist") {
193 # reset the cached values
194 undef $CPAN::FTP::Thesite;
195 undef $CPAN::FTP::Themethod;
196 $CPAN::Index::LAST_TIME = 0;
197 } elsif ($o eq "dontload_list") {
198 # empty it, it will be built up again
199 $CPAN::META->{dontload_hash} = {};
202 } elsif ($o =~ /_hash$/) {
208 if (@args==1 && $args[0] eq "") {
210 } elsif (@args % 2) {
213 $CPAN::Config->{$o} = { @args };
221 if (defined $args[0]) {
222 $CPAN::CONFIG_DIRTY = 1;
223 $CPAN::Config->{$o} = $args[0];
226 $self->prettyprint($o)
227 if exists $keys{$o} or defined $CPAN::Config->{$o};
230 if ($CPAN::Config->{auto_commit}) {
233 $CPAN::CONFIG_DIRTY = 1;
234 $CPAN::Frontend->myprint("Please use 'o conf commit' to ".
235 "make the config permanent!\n\n");
243 my $v = $CPAN::Config->{$k};
246 if (ref $v eq "ARRAY") {
247 @report = map {"\t$_ \[$v->[$_]]\n"} 0..$#$v;
251 sprintf "\t%-18s => %s\n",
253 defined $v->{$_} ? "[$v->{$_}]" : "undef"
256 $CPAN::Frontend->myprint(
266 } elsif (defined $v) {
267 $CPAN::Frontend->myprint(sprintf " %-18s [%s]\n", $k, $v);
269 $CPAN::Frontend->myprint(sprintf " %-18s undef\n", $k);
273 # generally, this should be called without arguments so that the currently
274 # loaded config file is where changes are committed.
276 my($self,@args) = @_;
277 CPAN->debug("args[@args]") if $CPAN::DEBUG;
278 if ($CPAN::RUN_DEGRADED) {
279 $CPAN::Frontend->mydie(
280 "'o conf commit' disabled in ".
281 "degraded mode. Maybe try\n".
282 " !undef \$CPAN::RUN_DEGRADED\n"
285 my ($configpm, $must_reload);
287 # XXX does anything do this? can it be simplified? -- dagolden, 2011-01-19
289 if ($args[0] eq "args") {
290 # we have not signed that contract
292 $configpm = $args[0];
296 # use provided name or the current config or create a new MyConfig
297 $configpm ||= require_myconfig_or_config() || make_new_config();
299 # commit to MyConfig if we can't write to Config
300 if ( ! -w $configpm && $configpm =~ m{CPAN/Config\.pm} ) {
301 my $myconfig = _new_config_name();
302 $CPAN::Frontend->mywarn(
303 "Your $configpm file\n".
304 "is not writable. I will attempt to write your configuration to\n" .
305 "$myconfig instead.\n\n"
307 $configpm = make_new_config();
308 $must_reload++; # so it gets loaded as $INC{'CPAN/MyConfig.pm'}
311 # XXX why not just "-w $configpm"? -- dagolden, 2011-01-19
314 $mode = (stat $configpm)[2];
315 if ($mode && ! -w _) {
316 _die_cant_write_config($configpm);
320 $self->_write_config_file($configpm);
321 require_myconfig_or_config() if $must_reload;
323 #$mode = 0444 | ( $mode & 0111 ? 0111 : 0 );
324 #chmod $mode, $configpm;
325 ###why was that so? $self->defaults;
326 $CPAN::Frontend->myprint("commit: wrote '$configpm'\n");
327 $CPAN::CONFIG_DIRTY = 0;
331 sub _write_config_file {
332 my ($self, $configpm) = @_;
334 $msg = <<EOF if $configpm =~ m{CPAN/Config\.pm};
336 # This is CPAN.pm's systemwide configuration file. This file provides
337 # defaults for users, and the values can be changed in a per-user
338 # configuration file.
342 my($fh) = FileHandle->new;
343 rename $configpm, "$configpm~" if -f $configpm;
344 open $fh, ">$configpm" or
345 $CPAN::Frontend->mydie("Couldn't open >$configpm: $!");
346 $fh->print(qq[$msg\$CPAN::Config = \{\n]);
347 foreach (sort keys %$CPAN::Config) {
348 unless (exists $keys{$_}) {
349 # do not drop them: forward compatibility!
350 $CPAN::Frontend->mywarn("Unknown config variable '$_'\n");
355 $self->neatvalue($CPAN::Config->{$_}),
359 $fh->print("};\n1;\n__END__\n");
366 # stolen from MakeMaker; not taking the original because it is buggy;
367 # bugreport will have to say: keys of hashes remain unquoted and can
368 # produce syntax errors
371 return "undef" unless defined $v;
380 foreach my $elem (@$v) {
381 push @neat, "q[$elem]";
383 push @m, join ", ", @neat;
387 return "$v" unless $t eq 'HASH';
389 foreach my $key (sort keys %$v) {
390 my $val = $v->{$key};
391 push(@m,"q[$key]=>".$self->neatvalue($val)) ;
393 return "{ ".join(', ',@m)." }";
398 if ($CPAN::RUN_DEGRADED) {
399 $CPAN::Frontend->mydie(
400 "'o conf defaults' disabled in ".
401 "degraded mode. Maybe try\n".
402 " !undef \$CPAN::RUN_DEGRADED\n"
406 for my $config (qw(CPAN/MyConfig.pm CPAN/Config.pm)) {
408 CPAN->debug("INC{'$config'}[$INC{$config}]") if $CPAN::DEBUG;
409 CPAN::Shell->_reload_this($config,{reloforce => 1});
410 $CPAN::Frontend->myprint("'$INC{$config}' reread\n");
414 $CPAN::CONFIG_DIRTY = 0;
418 =head2 C<< CLASS->safe_quote ITEM >>
420 Quotes an item to become safe against spaces
421 in shell interpolation. An item is enclosed
424 - the item contains spaces in the middle
425 - the item does not start with a quote
427 This happens to avoid shell interpolation
428 problems when whitespace is present in
431 This method uses C<commands_quote> to determine
432 the correct quote. If C<commands_quote> is
433 a space, no quoting will take place.
436 if it starts and ends with the same quote character: leave it as it is
438 if it contains no whitespace: leave it as it is
440 if it contains whitespace, then
442 if it contains quotes: better leave it as it is
444 else: quote it with the correct quote type for the box we're on
449 # Instead of patching the guess, set commands_quote
451 my ($quotes,$use_quote)
458 my ($self, $command) = @_;
459 # Set up quote/default quote
460 my $quote = $CPAN::Config->{commands_quote} || $quotes;
463 and defined($command )
465 and $command !~ /[$quote]/) {
466 return qq<$use_quote$command$use_quote>
473 my($self,@args) = @_;
474 CPAN->debug("self[$self]args[".join(",",@args)."]");
475 $self->load(do_init => 1, @args);
479 # Loads CPAN::MyConfig or fall-back to CPAN::Config. Will not reload a file
480 # if already loaded. Returns the path to the file %INC or else the empty string
482 # Note -- if CPAN::Config were loaded and CPAN::MyConfig subsequently
483 # created, calling this again will leave *both* in %INC
485 sub require_myconfig_or_config () {
486 if ( $INC{"CPAN/MyConfig.pm"} || _try_loading("CPAN::MyConfig", cpan_home())) {
487 return $INC{"CPAN/MyConfig.pm"};
489 elsif ( $INC{"CPAN/Config.pm"} || _try_loading("CPAN::Config") ) {
490 return $INC{"CPAN/Config.pm"};
497 # Load a module, but ignore "can't locate..." errors
498 # Optionally take a list of directories to add to @INC for the load
500 my ($module, @dirs) = @_;
501 (my $file = $module) =~ s{::}{/}g;
505 for my $dir ( @dirs ) {
506 if ( -f File::Spec->catfile($dir, $file) ) {
512 eval { require $file };
513 my $err_myconfig = $@;
514 if ($err_myconfig and $err_myconfig !~ m#locate \Q$file\E#) {
515 die "Error while requiring ${module}:\n$err_myconfig";
520 # prioritized list of possible places for finding "CPAN/MyConfig.pm"
521 sub cpan_home_dir_candidates {
523 my $old_v = $CPAN::Config->{load_module_verbosity};
524 $CPAN::Config->{load_module_verbosity} = q[none];
525 if ($CPAN::META->has_usable('File::HomeDir')) {
526 if ($^O ne 'darwin') {
527 push @dirs, File::HomeDir->my_data;
528 # my_data is ~/Library/Application Support on darwin,
529 # which causes issues in the toolchain.
531 push @dirs, File::HomeDir->my_home;
533 # Windows might not have HOME, so check it first
534 push @dirs, $ENV{HOME} if $ENV{HOME};
535 # Windows might have these instead
536 push( @dirs, File::Spec->catpath($ENV{HOMEDRIVE}, $ENV{HOMEPATH}, '') )
537 if $ENV{HOMEDRIVE} && $ENV{HOMEPATH};
538 push @dirs, $ENV{USERPROFILE} if $ENV{USERPROFILE};
540 $CPAN::Config->{load_module_verbosity} = $old_v;
541 my $dotcpan = $^O eq 'VMS' ? '_cpan' : '.cpan';
542 @dirs = map { File::Spec->catdir($_, $dotcpan) } grep { defined } @dirs;
543 return wantarray ? @dirs : $dirs[0];
547 my($self, %args) = @_;
548 $CPAN::Be_Silent+=0; # protect against 'used only once'
549 $CPAN::Be_Silent++ if $args{be_silent}; # do not use; planned to be removed in 2011
550 my $do_init = delete $args{do_init} || 0;
551 my $make_myconfig = delete $args{make_myconfig};
552 $loading = 0 unless defined $loading;
554 my $configpm = require_myconfig_or_config;
555 my @miss = $self->missing_config_data;
556 CPAN->debug("do_init[$do_init]loading[$loading]miss[@miss]") if $CPAN::DEBUG;
557 return unless $do_init || @miss;
559 # I'm not how we'd ever wind up in a recursive loop, but I'm leaving
560 # this here for safety's sake -- dagolden, 2011-01-19
562 local $loading = ($loading||0) + 1;
564 # Warn if we have a config file, but things were found missing
565 if ($configpm && @miss && !$do_init) {
566 if ($make_myconfig || ( ! -w $configpm && $configpm =~ m{CPAN/Config\.pm})) {
567 $configpm = make_new_config();
568 $CPAN::Frontend->myprint(<<END);
569 The system CPAN configuration file has provided some default values,
570 but you need to complete the configuration dialog for CPAN.pm.
571 Configuration will be written to
576 $CPAN::Frontend->myprint(<<END);
577 Sorry, we have to rerun the configuration dialog for CPAN.pm due to
578 some missing parameters. Configuration will be written to
585 require CPAN::FirstTime;
586 return CPAN::FirstTime::init($configpm || make_new_config(), %args);
589 # Creates a new, empty config file at the preferred location
590 # Any existing will be renamed with a ".bak" suffix if possible
591 # If the file cannot be created, an exception is thrown
592 sub make_new_config {
593 my $configpm = _new_config_name();
594 my $configpmdir = File::Basename::dirname( $configpm );
595 File::Path::mkpath($configpmdir) unless -d $configpmdir;
597 if ( -w $configpmdir ) {
598 #_#_# following code dumped core on me with 5.003_11, a.k.
600 my $configpm_bak = "$configpm.bak";
601 unlink $configpm_bak if -f $configpm_bak;
602 if( rename $configpm, $configpm_bak ) {
603 $CPAN::Frontend->mywarn(<<END);
604 Old configuration file $configpm
605 moved to $configpm_bak
609 my $fh = FileHandle->new;
610 if ($fh->open(">$configpm")) {
615 _die_cant_write_config($configpm);
618 sub _die_cant_write_config {
620 $CPAN::Frontend->mydie(<<"END");
621 WARNING: CPAN.pm is unable to write a configuration file. You
622 must be able to create and write to '$configpm'.
624 Aborting configuration.
629 # From candidate directories, we would like (in descending preference order):
630 # * the one that contains a MyConfig file
631 # * one that exists (even without MyConfig)
632 # * the first one on the list
634 my @dirs = cpan_home_dir_candidates();
636 return $d if -f "$d/CPAN/MyConfig.pm";
644 sub _new_config_name {
645 return File::Spec->catfile(cpan_home(), 'CPAN', 'MyConfig.pm');
648 # returns mandatory but missing entries in the Config
649 sub missing_config_data {
661 #"inhibit_startup_message",
668 "mbuild_install_arg",
669 ($^O eq "MSWin32" ? "" : "mbuild_install_build_command"),
673 "prerequisites_policy",
679 next unless exists $keys{$_};
680 push @miss, $_ unless defined $CPAN::Config->{$_};
686 $CPAN::Frontend->myprint(q[
688 commit commit session changes to disk
689 defaults reload default config values from disk
691 init enter a dialog to set all or a set of parameters
693 Edit key values as in the following (the "o" is a literal letter o):
694 o conf build_cache 15
695 o conf build_dir "/foo/bar"
697 o conf urllist unshift ftp://ftp.foo.bar/
698 o conf inhibit_startup_message 1
701 1; #don't reprint CPAN::Config
705 my($word,$line,$pos) = @_;
707 CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
708 my(@words) = split " ", substr($line,0,$pos+1);
717 @words == 4 && length($word)
720 return grep /^\Q$word\E/, qw(splice shift unshift pop push);
721 } elsif (defined($words[2])
728 @words >= 4 && length($word)
730 return sort grep /^\Q$word\E/, keys %keys;
731 } elsif (@words >= 4) {
735 my(@o_conf) = sort grep { !$seen{$_}++ }
739 return grep /^\Q$word\E/, @o_conf;
743 my($self,$distro,$what) = @_;
745 if ($prefssupport{$what}) {
746 return $CPAN::Config->{$what} unless
749 and $distro->prefs->{cpanconfig}
750 and defined $distro->prefs->{cpanconfig}{$what};
751 return $distro->prefs->{cpanconfig}{$what};
753 $CPAN::Frontend->mywarn("Warning: $what not yet officially ".
754 "supported for distroprefs, doing a normal lookup");
755 return $CPAN::Config->{$what};
762 CPAN::Config; ####::###### #hide from indexer
763 # note: J. Nick Koston wrote me that they are using
764 # CPAN::Config->commit although undocumented. I suggested
765 # CPAN::Shell->o("conf","commit") even when ugly it is at least
768 # that's why I added the CPAN::Config class with autoload and
772 use vars qw($AUTOLOAD $VERSION);
775 # formerly CPAN::HandleConfig was known as CPAN::Config
776 sub AUTOLOAD { ## no critic
777 my $class = shift; # e.g. in dh-make-perl: CPAN::Config
779 $CPAN::Frontend->mywarn("Dispatching deprecated method '$l' to CPAN::HandleConfig\n");
781 CPAN::HandleConfig->$l(@_);
791 This program is free software; you can redistribute it and/or
792 modify it under the same terms as Perl itself.
798 # cperl-indent-level: 4
800 # vim: ts=4 sts=4 sw=4: