Provided by: liblog-report-lexicon-perl_1.09-1_all 
NAME
Log::Report::Extract::Template - collect translatable strings from template files
INHERITANCE
Log::Report::Extract::Template
is a Log::Report::Extract
SYNOPSIS
# First use of this module: extract msgids from various kinds
# of text-files, usually web templates.
# See script "xgettext-perl" for standard wrapper script
my $extr = Log::Report::Extract::Template->new
( lexicon => '/usr/share/locale'
, domain => 'my-web-site'
, pattern => 'TT2-loc'
);
$extr->process('website/page.html'); # many times
$extr->showStats;
$extr->write;
# Second use: connect to Template::Toolkit
# See DETAILS chapter below
[% loc("Greetings {name},", name => client.name) %]
[% | loc(name => client.name) %]Greetings {name}[% END %]
[% 'Greetings {name}' | loc(name => client.name) %]
DESCRIPTION
This module helps maintaining the POT files which list translatable strings from template
files (or other flat text files) by updating the list of message-ids which are kept in
them.
After initiation, the process() method needs to be called for each file in the domain and
the existing PO files will get updated accordingly.
If no translations exist yet, one "$textdomain.po" file will be created as point to start.
Copy that file into "$textdomain/$lang.po"
Extends "DESCRIPTION" in Log::Report::Extract.
METHODS
Extends "METHODS" in Log::Report::Extract.
Constructors
Extends "Constructors" in Log::Report::Extract.
Log::Report::Extract::Template->new(%options)
-Option --Defined in --Default
charset Log::Report::Extract 'utf-8'
domain <required>
lexicon Log::Report::Extract <required>
pattern <undef>
charset => STRING
domain => DOMAIN
There is no syntax for specifying domains in templates (yet), so you must be
explicit about the collection we are making now.
lexicon => DIRECTORY
pattern => PREDEFINED|CODE
See the DETAILS section below for a detailed explenation.
Accessors
Extends "Accessors" in Log::Report::Extract.
$obj->addPot($domain, $pot, %options)
Inherited, see "Accessors" in Log::Report::Extract
$obj->charset()
Inherited, see "Accessors" in Log::Report::Extract
$obj->domain()
$obj->domains()
Inherited, see "Accessors" in Log::Report::Extract
$obj->index()
Inherited, see "Accessors" in Log::Report::Extract
$obj->pattern()
$obj->pots($domain)
Inherited, see "Accessors" in Log::Report::Extract
Processors
Extends "Processors" in Log::Report::Extract.
$obj->cleanup(%options)
Inherited, see "Processors" in Log::Report::Extract
$obj->process($filename, %options)
Update the domains mentioned in the $filename. All textdomains defined in the file
will get updated automatically, but not written before all files where processed.
-Option --Default
charset 'utf-8'
pattern <from new(pattern)>
charset => STRING
The character encoding used in this template file.
pattern => PREDEFINED|CODE
Read the DETAILS section about this.
$obj->showStats( [$domains] )
Inherited, see "Processors" in Log::Report::Extract
$obj->store( $domain, $filename, $linenr, $context, $msg, [$msg_plural] )
Inherited, see "Processors" in Log::Report::Extract
$obj->write( [$domain] )
Inherited, see "Processors" in Log::Report::Extract
DETAILS
Scan Patterns
Various template systems use different conventions for denoting strings to be translated.
Predefined for Template-Toolkit
There is not a single convention for translations in "Template-Toolkit" (see Template), so
you need to specify which version TT you use and which function name you want to use. In
extreme cases, you may even build separate translation tables by simply providing using
functions.
For instance
pattern => 'TT2-loc'
will scan for
[% loc("msgid", key => value, ...) %]
[% loc('msgid', key => value, ...) %]
[% loc("msgid|plural", count, key => value, ...) %]
[% INCLUDE
title = loc('something')
%]
[% | loc(n => name) %]hi {n}[% END %]
[% 'hi {n}' | loc(n => name) %]
For TT1, the brackets can either be '[%...%]' or '%%...%%'. The function name is treated
case-sensitive. Some people prefer 'l()' or 'L()'.
The code needed
# during initiation of the webserver, once in your script (before fork)
my $lexicons = 'some-directory-for-translation-tables';
my $translator = Log::Report::Translator::POT->new(lexicons => $lexicons);
my $domain = textdomain $textdomain;
$domain->configure(translator => $translator);
# your standard template driver
sub handler {
...
my $vars = { ...all kinds of values... };
$vars->{loc} = \&translate; # <--- this is extra
my $output = '';
my $templater = Template->new(...);
$templater->process($template_fn, $vars, \$output);
print $output;
}
# anywhere in the same file
sub translate {
my $textdomain = ...; # your choice when running xgettext-perl
my $lang = ...; # how do you figure that out?
my $msg = Log::Report::Message->fromTemplateToolkit($textdomain, @_);
$msg->toString($lang);
}
To generate the pod tables, run in the shell something like
xgettext-perl -p $lexicons --template TT2-loc \
--domain $textdomain $templates_dir
If you want to implement your own extractor --to avoid "xgettext-perl"-- you need to run
something like this:
my $extr = Log::Report::Extract::Template->new
( lexicon => $output
, charset => 'utf-8'
, domain => $domain
, pattern => 'TT2-loc'
);
$extr->process($_) for @filenames;
$extr->write;
Use in combination with contexts
This example extends the previous with using context sensitive translations, as
implemented by Log::Report::Translator::Context.
Let's say that the translation of some of the sentences on the website depend on the
gender of the addressed person. An example of the use in a TT2 template:
[% loc("{name<gender} forgot his key", name => person.name) %]
The extraction script xgettext-perl will expand this into two records in the PO file,
respectively with msgctxt attribute 'gender=male' and 'gender=female'.
When your PO-files are not generated by 'xgettext-perl', you do not need a separate domain
configuration file:
$domain->configure
( context_rules => +{gender => ['male','female']}
, translator => $translator
);
When your PO-files are generated by 'xgettext-perl', you need to share the context-rules
between that msgid extractor and your runtime code. That same file needs to be passed with
the 'domain' parameter to the script.
# add context_rules either explicit or via 'config' filename
$domain->configure
( config => 'my/own/$domain.conf'
, translator => $translator
);
Now, when you generate the pages, you need to set-up the right context. In this case, we
set-up the gender of the person who gets addressed. (The name 'gender' is good for
examples, but quite non-descriptive. Maybe 'user_gender' is more maintainable)
$domain->setContext( +{gender => 'male'} ); # or ('gender=male')
$domain->setContext( "gender=male" ); # same
SEE ALSO
This module is part of Log-Report-Lexicon distribution version 1.09, built on August 28,
2017. Website: http://perl.overmeer.net/log-report/
LICENSE
Copyrights 2007-2017 by [Mark Overmeer]. For other contributors see ChangeLog.
This program is free software; you can redistribute it and/or modify it under the same
terms as Perl itself. See http://dev.perl.org/licenses/