Provided by: liblocale-maketext-lexicon-perl_1.00-1_all 
NAME
Locale::Maketext::Extract - Extract translatable strings from source
VERSION
version 1.00
SYNOPSIS
my $Ext = Locale::Maketext::Extract->new;
$Ext->read_po('messages.po');
$Ext->extract_file($_) for <*.pl>;
# Set $entries_are_in_gettext_format if the .pl files above use
# loc('%1') instead of loc('[_1]')
$Ext->compile($entries_are_in_gettext_format);
$Ext->write_po('messages.po');
-----------------------------------
### Specifying parser plugins ###
my $Ext = Locale::Maketext::Extract->new(
# Specify which parser plugins to use
plugins => {
# Use Perl parser, process files with extension .pl .pm .cgi
perl => [],
# Use YAML parser, process all files
yaml => ['*'],
# Use TT2 parser, process files with extension .tt2 .tt .html
# or which match the regex
tt2 => [
'tt2',
'tt',
'html',
qr/\.tt2?\./
],
# Use My::Module as a parser for all files
'My::Module' => ['*'],
},
# Warn if a parser can't process a file or problems loading a plugin
warnings => 1,
# List processed files
verbose => 1,
);
DESCRIPTION
This module can extract translatable strings from files, and write them back to PO files.
It can also parse existing PO files and merge their contents with newly extracted strings.
A command-line utility, xgettext.pl, is installed with this module as well.
The format parsers are loaded as plugins, so it is possible to define your own parsers.
Following formats of input files are supported:
Perl source files (plugin: perl)
Valid localization function names are: "translate", "maketext", "gettext", "l", "loc",
"x", "_" and "__".
For a slightly more accurate, but much slower Perl parser, you can use the PPI
plugin. This does not have a short name (like "perl"), but must be specified in full.
HTML::Mason (Mason 1) and Mason (Mason 2) (plugin: mason)
HTML::Mason (aka Mason 1)
Strings inside <&|/l>...</&> and <&|/loc>...</&> are extracted.
Mason (aka Mason 2) Strings inside <% $.floc { %>...</%> or <% $.fl { %>...</%> or <%
$self->floc { %>...</%> or <% $self->fl { %>...</%> are extracted.
Template Toolkit (plugin: tt2)
Valid forms are:
[% | l(arg1,argn) %]string[% END %]
[% 'string' | l(arg1,argn) %]
[% l('string',arg1,argn) %]
FILTER and | are interchangeable
l and loc are interchangeable
args are optional
Text::Template (plugin: text)
Sentences between "STARTxxx" and "ENDxxx" are extracted individually.
YAML (plugin: yaml)
Valid forms are _"string" or _'string', eg:
title: _"My title"
desc: _'My "quoted" string'
Quotes do not have to be escaped, so you could also do:
desc: _"My "quoted" string"
HTML::FormFu (plugin: formfu)
HTML::FormFu uses a config-file to generate forms, with built in support for
localizing errors, labels etc.
We extract the text after "_loc: ":
content_loc: this is the string
message_loc: ['Max string length: [_1]', 10]
Generic Template (plugin: generic)
Strings inside {{...}} are extracted.
METHODS
Constructor
new()
new(
plugins => {...},
warnings => 1 | 0,
verbose => 0 | 1 | 2 | 3,
)
See "Plugins", "Warnings" and "Verbose" for details
Plugins
$ext->plugins({...});
Locale::Maketext::Extract uses plugins (see below for the list) to parse different
formats.
Each plugin can also specify which file types it can parse.
# use only the YAML plugin
# only parse files with the default extension list defined in the plugin
# ie .yaml .yml .conf
$ext->plugins({
yaml => [],
})
# use only the Perl plugin
# parse all file types
$ext->plugins({
perl => '*'
})
$ext->plugins({
tt2 => [
'tt', # matches base filename against /\.tt$/
qr/\.tt2?\./, # matches base filename against regex
\&my_filter, # codref called
]
})
sub my_filter {
my ($base_filename,$path_to_file) = @_;
return 1 | 0;
}
# Specify your own parser
# only parse files with the default extension list defined in the plugin
$ext->plugins({
'My::Extract::Parser' => []
})
By default, if no plugins are specified, it first tries to determine which plugins are
intended specifically for the file type and uses them. If no such plugins are found, it
then uses all of the builtin plugins, overriding the file types specified in each.
Available plugins
"perl" : Locale::Maketext::Extract::Plugin::Perl
For a slightly more accurate but much slower Perl parser, you can use the PPI plugin.
This does not have a short name, but must be specified in full, ie:
Locale::Maketext::Extract::Plugin::PPI
"tt2" : Locale::Maketext::Extract::Plugin::TT2
"yaml" : Locale::Maketext::Extract::Plugin::YAML
"formfu" : Locale::Maketext::Extract::Plugin::FormFu
"mason" : Locale::Maketext::Extract::Plugin::Mason
"text" : Locale::Maketext::Extract::Plugin::TextTemplate
"generic" : Locale::Maketext::Extract::Plugin::Generic
Also, see Locale::Maketext::Extract::Plugin::Base for details of how to write your own
plugin.
Warnings
Because the YAML and TT2 plugins use proper parsers, rather than just regexes, if a source
file is not valid and it is unable to parse the file, then the parser will throw an error
and abort parsing.
The next enabled plugin will be tried.
By default, you will not see these errors. If you would like to see them, then enable
warnings via new(). All parse errors will be printed to STDERR.
Also, if developing your own plugin, turn on warnings to see any errors that result from
loading your plugin.
Verbose
If you would like to see which files have been processed, which plugins were used, and
which strings were extracted, then enable "verbose". If no acceptable plugin was found, or
no strings were extracted, then the file is not listed:
$ext = Locale::Extract->new( verbose => 1 | 2 | 3);
OR
xgettext.pl ... -v # files reported
xgettext.pl ... -v -v # files and plugins reported
xgettext.pl ... -v -v -v # files, plugins and strings reported
Accessors
header, set_header
lexicon, set_lexicon, msgstr, set_msgstr
entries, set_entries, entry, add_entry, del_entry
compiled_entries, set_compiled_entries, compiled_entry,
add_compiled_entry, del_compiled_entry
clear
PO File manipulation
method read_po ($file)
method write_po ($file, $add_format_marker?)
Extraction
extract
extract_file
Compilation
compile($entries_are_in_gettext_style?)
Merges the "entries" into "compiled_entries".
If $entries_are_in_gettext_style is true, the previously extracted entries are assumed to
be in the Gettext style (e.g. %1).
Otherwise they are assumed to be in Maketext style (e.g. "[_1]") and are converted into
Gettext style before merging into "compiled_entries".
The "entries" are not cleared after each compilation; use "-"set_entries()> to clear them
if you need to extract from sources with varying styles.
normalize_space
Lexicon accessors
msgids, has_msgid,
msgstr, set_msgstr
msg_positions, msg_variables, msg_format, msg_out
Internal utilities
_default_header
_maketext_to_gettext
_escape
_format
_plugins_specifically_for_file
ACKNOWLEDGMENTS
Thanks to Jesse Vincent for contributing to an early version of this module.
Also to Alain Barbet, who effectively re-wrote the source parser with a flex-like
algorithm.
SEE ALSO
xgettext.pl, Locale::Maketext, Locale::Maketext::Lexicon
AUTHORS
Audrey Tang <cpan@audreyt.org>
COPYRIGHT
Copyright 2003-2013 by Audrey Tang <cpan@audreyt.org>.
This software is released under the MIT license cited below.
The "MIT" License
Permission is hereby granted, free of charge, to any person obtaining a copy of this
software and associated documentation files (the "Software"), to deal in the Software
without restriction, including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
AUTHORS
• Clinton Gormley <drtech@cpan.org>
• Audrey Tang <cpan@audreyt.org>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2014 by Audrey Tang.
This is free software, licensed under:
The MIT (X11) License