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# Copyrights 2007-2011 by Mark Overmeer.
# For other contributors see ChangeLog.
# See the manual pages for details on the licensing terms.
# Pod stripped from pm file by OODoc 2.00.
use warnings;
use strict;
package Log::Report::Lexicon::POTcompact;
use vars '$VERSION';
$VERSION = '0.94';
use base 'Exporter';
# permit "mixins", not for end-users
our @EXPORT_OK = qw/_plural_algorithm _nr_plurals _escape _unescape/;
use IO::Handle;
use IO::File;
use List::Util qw/sum/;
use Log::Report 'log-report', syntax => 'SHORT';
use Log::Report::Util qw/escape_chars unescape_chars/;
sub _plural_algorithm($);
sub _nr_plurals($);
sub _unescape($$);
sub read($@)
{ my ($class, $fn, %args) = @_;
my $self = bless {}, $class;
my $charset = $args{charset}
or error __x"charset parameter required for {fn}", fn => $fn;
open my $fh, "<:encoding($charset)", $fn
or fault __x"cannot read in {cs} from file {fn}"
, cs => $charset, fn => $fn;
# Speed!
my ($last, $msgid, @msgstr);
LINE:
while(my $line = $fh->getline)
{ next if substr($line, 0, 1) eq '#';
if($line =~ m/^\s*$/) # blank line starts new
{ if(@msgstr)
{ $self->{index}{$msgid} = @msgstr > 1 ? [@msgstr] : $msgstr[0];
($msgid, @msgstr) = ();
}
next LINE;
}
if($line =~ s/^msgid\s+//)
{ $msgid = _unescape $line, $fn;
$last = \$msgid;
}
elsif($line =~ s/^msgstr\[(\d+)\]\s*//)
{ $last = \($msgstr[$1] = _unescape $line, $fn);
}
elsif($line =~ s/^msgstr\s+//)
{ $msgstr[0] = _unescape $line, $fn;
$last = \$msgstr[0];
}
elsif($last && $line =~ m/^\s*\"/)
{ $$last .= _unescape $line, $fn;
}
}
$self->{index}{$msgid} = (@msgstr > 1 ? \@msgstr : $msgstr[0])
if @msgstr; # don't forget the last
close $fh
or failure __x"failed reading from file {fn}", fn => $fn;
$self->{filename} = $fn;
my $forms = $self->header('Plural-Forms');
$self->{algo} = _plural_algorithm $forms;
$self->{nrplurals} = _nr_plurals $forms;
$self;
}
sub index() {shift->{index}}
sub filename() {shift->{filename}}
sub nrPlurals() {shift->{nrplurals}}
sub algorithm() {shift->{algo}}
sub msgid($) { $_[0]->{index}{$_[1]} }
# speed!!!
sub msgstr($;$)
{ my $po = $_[0]->{index}{$_[1]}
or return undef;
ref $po # no plurals defined
or return $po;
$po->[$_[0]->{algo}->(defined $_[2] ? $_[2] : 1)]
|| $po->[$_[0]->{algo}->(1)];
}
sub header($)
{ my ($self, $field) = @_;
my $header = $self->msgid('') or return;
$header =~ m/^\Q$field\E\:\s*([^\n]*?)\;?\s*$/im ? $1 : undef;
}
#
### internal helper routines, shared with ::PO.pm and ::POT.pm
#
# extract algoritm from forms string
sub _plural_algorithm($)
{ my $forms = shift || '';
my $alg = $forms =~ m/plural\=([n%!=><\s\d|&?:()]+)/ ? $1 : "n!=1";
$alg =~ s/\bn\b/(\$_[0])/g;
my $code = eval "sub(\$) {$alg}";
$@ and error __x"invalid plural-form algorithm '{alg}'", alg => $alg;
$code;
}
# extract number of plural versions in the language from forms string
sub _nr_plurals($)
{ my $forms = shift || '';
$forms =~ m/\bnplurals\=(\d+)/ ? $1 : 2;
}
sub _unescape($$)
{ unless( $_[0] =~ m/^\s*\"(.*)\"\s*$/ )
{ warning __x"string '{text}' not between quotes at {location}"
, text => $_[0], location => $_[1];
return $_[0];
}
unescape_chars $1;
}
sub _escape($$)
{ my @escaped = map { '"' . escape_chars($_) . '"' }
defined $_[0] && length $_[0] ? split(/(?<=\n)/, $_[0]) : '';
unshift @escaped, '""' if @escaped > 1;
join $_[1], @escaped;
}
1;
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