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package OpenSLX::Basics;
use strict;
use vars qw(@ISA @EXPORT $VERSION);
use Exporter;
$VERSION = 0.02;
@ISA = qw(Exporter);
@EXPORT = qw(
&openslxInit %openslxConfig
&_tr &trInit
&vlog
);
use vars qw(%openslxConfig);
################################################################################
### Module implementation
################################################################################
use Carp;
use FindBin;
use Getopt::Long;
my %translations;
my $loadedTranslationModule;
# this hash will hold the active openslx configuration,
# it is populated from config files and/or cmdline arguments:
%openslxConfig = (
'db-name' => 'openslx',
'db-type' => 'CSV',
'locale' => $ENV{LANG},
# TODO: may need to be improved in order to be portable
'private-basepath' => '/var/lib/openslx',
'public-basepath' => '/srv/openslx',
'shared-basepath' => '/usr/share/openslx',
'temp-basepath' => '/tmp',
);
$openslxConfig{'db-basepath'} = "$openslxConfig{'private-basepath'}/db",
# specification of cmdline arguments that are shared by all openslx-scripts:
my %openslxCmdlineArgs = (
'db-basepath=s' => \$openslxConfig{'db-basepath'},
# basic path to openslx database, defaults to "$private-basepath/db"
'db-datadir=s' => \$openslxConfig{'db-datadir'},
# data folder created under db-basepath, default depends on db-type
'db-spec=s' => \$openslxConfig{'db-spec'},
# full specification of database, a special string defining the
# precise database to connect to (the contents of this string
# depend on db-type)
'db-name=s' => \$openslxConfig{'db-name'},
# name of database, defaults to 'openslx'
'db-type=s' => \$openslxConfig{'db-type'},
# type of database to connect to (CSV, SQLite, ...), defaults to 'CSV'
'locale=s' => \$openslxConfig{'locale'},
# locale to use for translations
'logfile=s' => \$openslxConfig{'locale'},
# file to write logging output to, defaults to STDERR
'private-basepath=s' => \$openslxConfig{'private-basepath'},
# basic path to private data (which is accessible for clients and
# contains all data required for booting the clients)
'public-basepath=s' => \$openslxConfig{'public-basepath'},
# basic path to public data (which contains database, vendorOSes
# and all local extensions [system specific scripts])
'shared-basepath=s' => \$openslxConfig{'shared-basepath'},
# basic path to shared data (functionality templates and distro-specs)
'temp-basepath=s' => \$openslxConfig{'temp-basepath'},
# basic path to temporary data (used during demuxing)
'verbose-level=i' => \$openslxConfig{'verbose-level'},
# level of logging verbosity (0-3)
);
# filehandle used for logging:
my $openslxLog = *STDERR;
# ------------------------------------------------------------------------------
sub vlog
{
my $minLevel = shift;
return if $minLevel > $openslxConfig{'verbose-level'};
print $openslxLog '-'x$minLevel, @_, "\n";
}
# ------------------------------------------------------------------------------
sub openslxInit
{
# try to read and evaluate config files:
foreach my $f ("OpenSLX/openslxrc", "$ENV{HOME}/.openslxrc") {
next unless open(CONFIG, "<$f");
while(<CONFIG>) {
chomp;
s/#.*//;
s/^\s+//;
s/\s+$//;
next unless length;
my ($key, $value) = split(/\s*=\s*/, $_, 2);
$openslxConfig{$key} = $value;
}
close CONFIG;
}
# push any cmdline argument directly into our config hash:
GetOptions(%openslxCmdlineArgs);
if (defined $openslxConfig{'logfile'}
&& open(LOG, ">>$openslxConfig{'logfile'}")) {
$openslxLog
}
if ($openslxConfig{'verbose-level'} >= 2) {
foreach my $k (sort keys %openslxConfig) {
vlog 2, "dump-config: $k = $openslxConfig{$k}";
}
}
# setup translation "engine":
trInit();
}
# ------------------------------------------------------------------------------
sub trInit
{
my $locale = $openslxConfig{'locale'};
$locale =~ tr[A-Z.\-][a-z__];
my $trModule = "OpenSLX::Translations::$locale";
if ($loadedTranslationModule eq $trModule) {
# requested translations have already been loaded
return;
}
# load Posix-Translations first in order to fall back to English strings
# if a specific translation isn't available:
if (eval "require OpenSLX::Translations::posix") {
%translations = %OpenSLX::Translations::posix::translations;
} else {
carp "Unable to load translations module 'posix' ($!).";
}
if ($locale ne 'posix') {
if (eval "require $trModule") {
# Access OpenSLX::Translations::$locale::%translations
# via a symbolic reference...
no strict 'refs';
my $translationsRef = \%{"${trModule}::translations"};
# ...and copy the available translations into our hash:
foreach my $k (keys %{$translationsRef}) {
$translations{$k} = $translationsRef->{$k};
}
$loadedTranslationModule = $trModule;
} else {
carp "Unable to load translations module '$locale' ($!).";
}
}
}
# ------------------------------------------------------------------------------
sub _tr
{
my $trKey = shift;
my $formatStr = $translations{$trKey};
if (!defined $formatStr) {
# carp "Translation key '$trKey' not found.";
$formatStr = $trKey;
}
return sprintf($formatStr, @_);
}
1;
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