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package CPAN::HandleConfig;
use strict;
use vars qw(%can %keys $loading $VERSION);
use File::Path ();
use File::Spec ();
use File::Basename ();
use Carp ();
=head1 NAME
CPAN::HandleConfig - internal configuration handling for CPAN.pm
=cut
$VERSION = "5.5003"; # see also CPAN::Config::VERSION at end of file
%can = (
commit => "Commit changes to disk",
defaults => "Reload defaults from disk",
help => "Short help about 'o conf' usage",
init => "Interactive setting of all options",
);
# Q: where is the "How do I add a new config option" HOWTO?
# A1: svn diff -r 757:758 # where dagolden added test_report [git e997b71de88f1019a1472fc13cb97b1b7f96610f]
# A2: svn diff -r 985:986 # where andk added yaml_module [git 312b6d9b12b1bdec0b6e282d853482145475021f]
# A3: 1. add new config option to %keys below
# 2. add a Pod description in CPAN::FirstTime; it should include a
# prompt line; see others for examples
# 3. add a "matcher" section in CPAN::FirstTime::init that includes
# a prompt function; see others for examples
# 4. add config option to documentation section in CPAN.pm
%keys = map { $_ => undef }
(
"applypatch",
"auto_commit",
"build_cache",
"build_dir",
"build_dir_reuse",
"build_requires_install_policy",
"bzip2",
"cache_metadata",
"check_sigs",
"colorize_debug",
"colorize_output",
"colorize_print",
"colorize_warn",
"commandnumber_in_prompt",
"commands_quote",
"connect_to_internet_ok",
"cpan_home",
"curl",
"dontload_hash", # deprecated after 1.83_68 (rev. 581)
"dontload_list",
"ftp",
"ftp_passive",
"ftp_proxy",
"ftpstats_size",
"ftpstats_period",
"getcwd",
"gpg",
"gzip",
"halt_on_failure",
"histfile",
"histsize",
"http_proxy",
"inactivity_timeout",
"index_expire",
"inhibit_startup_message",
"keep_source_where",
"load_module_verbosity",
"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",
"patch",
"patches_dir",
"perl5lib_verbosity",
"prefer_external_tar",
"prefer_installer",
"prefs_dir",
"prerequisites_policy",
"proxy_pass",
"proxy_user",
"randomize_urllist",
"scan_cache",
"shell",
"show_unparsable_versions",
"show_upload_date",
"show_zero_versions",
"tar",
"tar_verbosity",
"term_is_latin",
"term_ornaments",
"test_report",
"trust_test_report_history",
"unzip",
"urllist",
"use_sqlite",
"username",
"version_timeout",
"wait_list",
"wget",
"yaml_load_code",
"yaml_module",
);
my %prefssupport = map { $_ => 1 }
(
"build_requires_install_policy",
"check_sigs",
"make",
"make_install_make_command",
"prefer_installer",
"test_report",
);
# returns true on successful action
sub edit {
my($self,@args) = @_;
return unless @args;
CPAN->debug("self[$self]args[".join(" | ",@args)."]");
my($o,$str,$func,$args,$key_exists);
$o = shift @args;
if($can{$o}) {
my $success = $self->$o(args => \@args); # o conf init => sub init => sub load
unless ($success) {
die "Panic: could not configure CPAN.pm for args [@args]. Giving up.";
}
} else {
CPAN->debug("o[$o]") if $CPAN::DEBUG;
unless (exists $keys{$o}) {
$CPAN::Frontend->mywarn("Warning: unknown configuration variable '$o'\n");
}
my $changed;
# one day I used randomize_urllist for a boolean, so we must
# list them explicitly --ak
if (0) {
} elsif ($o =~ /^(wait_list|urllist|dontload_list)$/) {
#
# ARRAYS
#
$func = shift @args;
$func ||= "";
CPAN->debug("func[$func]args[@args]") if $CPAN::DEBUG;
# Let's avoid eval, it's easier to comprehend without.
if ($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") {
my $offset = shift @args || 0;
my $length = shift @args || 0;
splice @{$CPAN::Config->{$o}}, $offset, $length, @args; # may warn
$changed = 1;
} elsif ($func) {
$CPAN::Config->{$o} = [$func, @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;
$CPAN::Index::LAST_TIME = 0;
} elsif ($o eq "dontload_list") {
# empty it, it will be built up again
$CPAN::META->{dontload_hash} = {};
}
}
} elsif ($o =~ /_hash$/) {
#
# HASHES
#
if (@args==1 && $args[0] eq "") {
@args = ();
} elsif (@args % 2) {
push @args, "";
}
$CPAN::Config->{$o} = { @args };
$changed = 1;
} else {
#
# SCALARS
#
if (defined $args[0]) {
$CPAN::CONFIG_DIRTY = 1;
$CPAN::Config->{$o} = $args[0];
$changed = 1;
}
$self->prettyprint($o)
if exists $keys{$o} or defined $CPAN::Config->{$o};
}
if ($changed) {
if ($CPAN::Config->{auto_commit}) {
$self->commit;
} else {
$CPAN::CONFIG_DIRTY = 1;
$CPAN::Frontend->myprint("Please use 'o conf commit' to ".
"make the config permanent!\n\n");
}
}
}
}
sub prettyprint {
my($self,$k) = @_;
my $v = $CPAN::Config->{$k};
if (ref $v) {
my(@report);
if (ref $v eq "ARRAY") {
@report = map {"\t$_ \[$v->[$_]]\n"} 0..$#$v;
} else {
@report = map
{
sprintf "\t%-18s => %s\n",
"[$_]",
defined $v->{$_} ? "[$v->{$_}]" : "undef"
} 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 undef\n", $k);
}
}
# generally, this should be called without arguments so that the currently
# loaded config file is where changes are committed.
sub commit {
my($self,@args) = @_;
CPAN->debug("args[@args]") if $CPAN::DEBUG;
if ($CPAN::RUN_DEGRADED) {
$CPAN::Frontend->mydie(
"'o conf commit' disabled in ".
"degraded mode. Maybe try\n".
" !undef \$CPAN::RUN_DEGRADED\n"
);
}
my ($configpm, $must_reload);
# XXX does anything do this? can it be simplified? -- dagolden, 2011-01-19
if (@args) {
if ($args[0] eq "args") {
# we have not signed that contract
} else {
$configpm = $args[0];
}
}
# use provided name or the current config or create a new MyConfig
$configpm ||= require_myconfig_or_config() || make_new_config();
# commit to MyConfig if we can't write to Config
if ( ! -w $configpm && $configpm =~ m{CPAN/Config\.pm} ) {
my $myconfig = _new_config_name();
$CPAN::Frontend->mywarn(
"Your $configpm file\n".
"is not writable. I will attempt to write your configuration to\n" .
"$myconfig instead.\n\n"
);
$configpm = make_new_config();
$must_reload++; # so it gets loaded as $INC{'CPAN/MyConfig.pm'}
}
# XXX why not just "-w $configpm"? -- dagolden, 2011-01-19
my($mode);
if (-f $configpm) {
$mode = (stat $configpm)[2];
if ($mode && ! -w _) {
_die_cant_write_config($configpm);
}
}
$self->_write_config_file($configpm);
require_myconfig_or_config() if $must_reload;
#$mode = 0444 | ( $mode & 0111 ? 0111 : 0 );
#chmod $mode, $configpm;
###why was that so? $self->defaults;
$CPAN::Frontend->myprint("commit: wrote '$configpm'\n");
$CPAN::CONFIG_DIRTY = 0;
1;
}
sub _write_config_file {
my ($self, $configpm) = @_;
my $msg;
$msg = <<EOF if $configpm =~ m{CPAN/Config\.pm};
# 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.
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 $keys{$_}) {
# do not drop them: forward compatibility!
$CPAN::Frontend->mywarn("Unknown config variable '$_'\n");
next;
}
$fh->print(
" '$_' => ",
$self->neatvalue($CPAN::Config->{$_}),
",\n"
);
}
$fh->print("};\n1;\n__END__\n");
close $fh;
return;
}
# stolen from MakeMaker; not taking the original because it is buggy;
# bugreport will have to say: keys of hashes remain unquoted and can
# produce syntax errors
sub neatvalue {
my($self, $v) = @_;
return "undef" unless defined $v;
my($t) = ref $v;
unless ($t) {
$v =~ s/\\/\\\\/g;
return "q[$v]";
}
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($self) = @_;
if ($CPAN::RUN_DEGRADED) {
$CPAN::Frontend->mydie(
"'o conf defaults' disabled in ".
"degraded mode. Maybe try\n".
" !undef \$CPAN::RUN_DEGRADED\n"
);
}
my $done;
for my $config (qw(CPAN/MyConfig.pm CPAN/Config.pm)) {
if ($INC{$config}) {
CPAN->debug("INC{'$config'}[$INC{$config}]") if $CPAN::DEBUG;
CPAN::Shell->_reload_this($config,{reloforce => 1});
$CPAN::Frontend->myprint("'$INC{$config}' reread\n");
last;
}
}
$CPAN::CONFIG_DIRTY = 0;
1;
}
=head2 C<< CLASS->safe_quote ITEM >>
Quotes an item to become safe against spaces
in shell interpolation. An item is enclosed
in double quotes if:
- the item contains spaces in the middle
- the item does not start with a quote
This happens to avoid shell interpolation
problems when whitespace is present in
directory names.
This method uses C<commands_quote> to determine
the correct quote. If C<commands_quote> is
a space, no quoting will take place.
if it starts and ends with the same quote character: leave it as it is
if it contains no whitespace: leave it as it is
if it contains whitespace, then
if it contains quotes: better leave it as it is
else: quote it with the correct quote type for the box we're on
=cut
{
# Instead of patching the guess, set commands_quote
# to the right value
my ($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 defined($command )
and $command =~ /\s/
and $command !~ /[$quote]/) {
return qq<$use_quote$command$use_quote>
}
return $command;
}
}
sub init {
my($self,@args) = @_;
CPAN->debug("self[$self]args[".join(",",@args)."]");
$self->load(do_init => 1, @args);
1;
}
# Loads CPAN::MyConfig or fall-back to CPAN::Config. Will not reload a file
# if already loaded. Returns the path to the file %INC or else the empty string
#
# Note -- if CPAN::Config were loaded and CPAN::MyConfig subsequently
# created, calling this again will leave *both* in %INC
sub require_myconfig_or_config () {
if ( $INC{"CPAN/MyConfig.pm"} || _try_loading("CPAN::MyConfig", cpan_home())) {
return $INC{"CPAN/MyConfig.pm"};
}
elsif ( $INC{"CPAN/Config.pm"} || _try_loading("CPAN::Config") ) {
return $INC{"CPAN/Config.pm"};
}
else {
return q{};
}
}
# Load a module, but ignore "can't locate..." errors
# Optionally take a list of directories to add to @INC for the load
sub _try_loading {
my ($module, @dirs) = @_;
(my $file = $module) =~ s{::}{/}g;
$file .= ".pm";
local @INC = @INC;
for my $dir ( @dirs ) {
if ( -f File::Spec->catfile($dir, $file) ) {
unshift @INC, $dir;
last;
}
}
eval { require $file };
my $err_myconfig = $@;
if ($err_myconfig and $err_myconfig !~ m#locate \Q$file\E#) {
die "Error while requiring ${module}:\n$err_myconfig";
}
return $INC{$file};
}
# prioritized list of possible places for finding "CPAN/MyConfig.pm"
sub cpan_home_dir_candidates {
my @dirs;
my $old_v = $CPAN::Config->{load_module_verbosity};
$CPAN::Config->{load_module_verbosity} = q[none];
if ($CPAN::META->has_usable('File::HomeDir')) {
if ($^O ne 'darwin') {
push @dirs, File::HomeDir->my_data;
# my_data is ~/Library/Application Support on darwin,
# which causes issues in the toolchain.
}
push @dirs, File::HomeDir->my_home;
}
# Windows might not have HOME, so check it first
push @dirs, $ENV{HOME} if $ENV{HOME};
# Windows might have these instead
push( @dirs, File::Spec->catpath($ENV{HOMEDRIVE}, $ENV{HOMEPATH}, '') )
if $ENV{HOMEDRIVE} && $ENV{HOMEPATH};
push @dirs, $ENV{USERPROFILE} if $ENV{USERPROFILE};
$CPAN::Config->{load_module_verbosity} = $old_v;
@dirs = map { "$_/.cpan" } grep { defined } @dirs;
return wantarray ? @dirs : $dirs[0];
}
sub load {
my($self, %args) = @_;
$CPAN::Be_Silent+=0; # protect against 'used only once'
$CPAN::Be_Silent++ if $args{be_silent}; # do not use; planned to be removed in 2011
my $do_init = delete $args{do_init} || 0;
my $make_myconfig = delete $args{make_myconfig};
$loading = 0 unless defined $loading;
my $configpm = require_myconfig_or_config;
my @miss = $self->missing_config_data;
CPAN->debug("do_init[$do_init]loading[$loading]miss[@miss]") if $CPAN::DEBUG;
return unless $do_init || @miss;
# I'm not how we'd ever wind up in a recursive loop, but I'm leaving
# this here for safety's sake -- dagolden, 2011-01-19
return if $loading;
local $loading = ($loading||0) + 1;
# Warn if we have a config file, but things were found missing
if ($configpm && @miss && !$do_init) {
if ($make_myconfig || ( ! -w $configpm && $configpm =~ m{CPAN/Config\.pm})) {
$configpm = make_new_config();
$CPAN::Frontend->myprint(<<END);
The system CPAN configuration file has provided some default values,
but you need to complete the configuration dialog for CPAN.pm.
Configuration will be written to
<<$configpm>>
END
}
else {
$CPAN::Frontend->myprint(<<END);
Sorry, we have to rerun the configuration dialog for CPAN.pm due to
some missing parameters. Configuration will be written to
<<$configpm>>
END
}
}
require CPAN::FirstTime;
return CPAN::FirstTime::init($configpm || make_new_config(), %args);
}
# Creates a new, empty config file at the preferred location
# Any existing will be renamed with a ".bak" suffix if possible
# If the file cannot be created, an exception is thrown
sub make_new_config {
my $configpm = _new_config_name();
my $configpmdir = File::Basename::dirname( $configpm );
File::Path::mkpath($configpmdir) unless -d $configpmdir;
if ( -w $configpmdir ) {
#_#_# following code dumped core on me with 5.003_11, a.k.
if( -f $configpm ) {
my $configpm_bak = "$configpm.bak";
unlink $configpm_bak if -f $configpm_bak;
if( rename $configpm, $configpm_bak ) {
$CPAN::Frontend->mywarn(<<END);
Old configuration file $configpm
moved to $configpm_bak
END
}
}
my $fh = FileHandle->new;
if ($fh->open(">$configpm")) {
$fh->print("1;\n");
return $configpm;
}
}
_die_cant_write_config($configpm);
}
sub _die_cant_write_config {
my ($configpm) = @_;
$CPAN::Frontend->mydie(<<"END");
WARNING: CPAN.pm is unable to write a configuration file. You
must be able to create and write to '$configpm'.
Aborting configuration.
END
}
# From candidate directories, we would like (in descending preference order):
# * the one that contains a MyConfig file
# * one that exists (even without MyConfig)
# * the first one on the list
sub cpan_home {
my @dirs = cpan_home_dir_candidates();
for my $d (@dirs) {
return $d if -f "$d/CPAN/MyConfig.pm";
}
for my $d (@dirs) {
return $d if -d $d;
}
return $dirs[0];
}
sub _new_config_name {
return File::Spec->catfile(cpan_home(), 'CPAN', 'MyConfig.pm');
}
# returns mandatory but missing entries in the Config
sub missing_config_data {
my(@miss);
for (
"auto_commit",
"build_cache",
"build_dir",
"cache_metadata",
"cpan_home",
"ftp_proxy",
#"gzip",
"http_proxy",
"index_expire",
#"inhibit_startup_message",
"keep_source_where",
#"make",
"make_arg",
"make_install_arg",
"makepl_arg",
"mbuild_arg",
"mbuild_install_arg",
($^O eq "MSWin32" ? "" : "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 {
$CPAN::Frontend->myprint(q[
Known options:
commit commit session changes to disk
defaults reload default config values from disk
help this help
init enter a dialog to set all or a set of parameters
Edit key values as in the following (the "o" is a literal letter o):
o conf build_cache 15
o conf build_dir "/foo/bar"
o conf urllist shift
o conf urllist unshift ftp://ftp.foo.bar/
o conf inhibit_startup_message 1
]);
1; #don't reprint CPAN::Config
}
sub cpl {
my($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$word\E/, @o_conf;
}
sub prefs_lookup {
my($self,$distro,$what) = @_;
if ($prefssupport{$what}) {
return $CPAN::Config->{$what} unless
$distro
and $distro->prefs
and $distro->prefs->{cpanconfig}
and defined $distro->prefs->{cpanconfig}{$what};
return $distro->prefs->{cpanconfig}{$what};
} else {
$CPAN::Frontend->mywarn("Warning: $what not yet officially ".
"supported for distroprefs, doing a normal lookup");
return $CPAN::Config->{$what};
}
}
{
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 = "5.5001";
# formerly CPAN::HandleConfig was known as CPAN::Config
sub AUTOLOAD { ## no critic
my $class = shift; # e.g. in dh-make-perl: CPAN::Config
my($l) = $AUTOLOAD;
$CPAN::Frontend->mywarn("Dispatching deprecated method '$l' to CPAN::HandleConfig\n");
$l =~ s/.*:://;
CPAN::HandleConfig->$l(@_);
}
}
1;
__END__
=head1 LICENSE
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=cut
# Local Variables:
# mode: cperl
# cperl-indent-level: 4
# End:
# vim: ts=4 sts=4 sw=4:
| .. | |||||
| API | |||||
| Exception | |||||
| FTP | |||||
| HTTP | |||||
| Kwalify | |||||
| LWP | |||||
| Plugin | |||||
| Admin.pm | |||||
| Author.pm | |||||
| Bundle.pm | |||||
| CacheMgr.pm | |||||
| Complete.pm | |||||
| Config.pm | |||||
| Debug.pm | |||||
| DeferredCode.pm | |||||
| Distribution.pm | |||||
| Distroprefs.pm | |||||
| Distrostatus.pm | |||||
| FTP.pm | |||||
| FirstTime.pm | |||||
| HandleConfig.pm | |||||
| Index.pm | |||||
| InfoObj.pm | |||||
| Kwalify.pm | |||||
| Mirrors.pm | |||||
| Module.pm | |||||
| Nox.pm | |||||
| Plugin.pm | |||||
| Prompt.pm | |||||
| Queue.pm | |||||
| Shell.pm | |||||
| Tarzip.pm | |||||
| URL.pm | |||||
| Version.pm |