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<!--
Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 The SCons Foundation
This file is processed by the bin/SConsDoc.py module.
See its __doc__ string for a discussion of the format.
-->
<tool name="msgmerge">
<summary>
This scons tool is a part of scons &t-link-gettext; toolset. It provides
scons interface to <command>msgmerge(1)</command> command, which merges two
Uniform style <filename>.po</filename> files together.
</summary>
<sets>
MSGMERGE
MSGMERGECOM
MSGMERGECOMSTR
MSGMERGEFLAGS
POSUFFIX
POTSUFFIX
POUPDATE_ALIAS
</sets>
<uses>
POTDOMAIN
LINGUAS_FILE
POAUTOINIT
</uses>
</tool>
<builder name="POUpdate">
<summary>
The builder belongs to &t-link-msgmerge; tool. The builder updates
<literal>PO</literal> files with <command>msgmerge(1)</command>, or initializes
missing <literal>PO</literal> files as described in documentation of
&t-link-msginit; tool and &b-link-POInit; builder (see also
&cv-link-POAUTOINIT;). Note, that &b-POUpdate; <emphasis>does not add its
targets to <literal>po-create</literal> alias</emphasis> as &b-link-POInit;
does.
Target nodes defined through &b-POUpdate; are not built by default
(they're <literal>Ignore</literal>d from <literal>'.'</literal> node). Instead,
they are added automatically to special <literal>Alias</literal>
(<literal>'po-update'</literal> by default). The alias name may be changed
through the &cv-link-POUPDATE_ALIAS; construction variable. You can easilly
update <literal>PO</literal> files in your project by <command>scons
po-update</command>.
<emphasis>Example 1.</emphasis>
Update <filename>en.po</filename> and <filename>pl.po</filename> from
<filename>messages.pot</filename> template (see also &cv-link-POTDOMAIN;),
assuming that the later one exists or there is rule to build it (see
&b-link-POTUpdate;):
<example>
# ...
env.POUpdate(['en','pl']) # messages.pot --> [en.po, pl.po]
</example>
<emphasis>Example 2.</emphasis>
Update <filename>en.po</filename> and <filename>pl.po</filename> from
<filename>foo.pot</filename> template:
<example>
# ...
env.POUpdate(['en', 'pl'], ['foo']) # foo.pot --> [en.po, pl.pl]
</example>
<emphasis>Example 3.</emphasis>
Update <filename>en.po</filename> and <filename>pl.po</filename> from
<filename>foo.pot</filename> (another version):
<example>
# ...
env.POUpdate(['en', 'pl'], POTDOMAIN='foo') # foo.pot -- > [en.po, pl.pl]
</example>
<emphasis>Example 4.</emphasis>
Update files for languages defined in <filename>LINGUAS</filename> file. The
files are updated from <filename>messages.pot</filename> template:
<example>
# ...
env.POUpdate(LINGUAS_FILE = 1) # needs 'LINGUAS' file
</example>
<emphasis>Example 5.</emphasis>
Same as above, but update from <filename>foo.pot</filename> template:
<example>
# ...
env.POUpdate(LINGUAS_FILE = 1, source = ['foo'])
</example>
<emphasis>Example 6.</emphasis>
Update <filename>en.po</filename> and <filename>pl.po</filename> plus files for
languages defined in <filename>LINGUAS</filename> file. The files are updated
from <filename>messages.pot</filename> template:
<example>
# produce 'en.po', 'pl.po' + files defined in 'LINGUAS':
env.POUpdate(['en', 'pl' ], LINGUAS_FILE = 1)
</example>
<emphasis>Example 7.</emphasis>
Use &cv-link-POAUTOINIT; to automatically initialize <literal>PO</literal> file
if it doesn't exist:
<example>
# ...
env.POUpdate(LINGUAS_FILE = 1, POAUTOINIT = 1)
</example>
<emphasis>Example 8.</emphasis>
Update <literal>PO</literal> files for languages defined in
<filename>LINGUAS</filename> file. The files are updated from
<filename>foo.pot</filename> template. All necessary settings are
pre-configured via environment.
<example>
# ...
env['POAUTOINIT'] = 1
env['LINGUAS_FILE'] = 1
env['POTDOMAIN'] = 'foo'
env.POUpdate()
</example>
</summary>
</builder>
<!-- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -->
<cvar name="POUPDATE_ALIAS">
<summary>
Common alias for all <literal>PO</literal> files being defined with
&b-link-POUpdate; builder (default: <literal>'po-update'</literal>).
See &t-link-msgmerge; tool and &b-link-POUpdate; builder.
</summary>
</cvar>
<!-- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -->
<cvar name="MSGMERGE">
<summary>
Absolute path to <command>msgmerge(1)</command> binary as found by
<function>Detect()</function>.
See &t-link-msgmerge; tool and &b-link-POUpdate; builder.
</summary>
</cvar>
<!-- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -->
<cvar name="MSGMERGECOM">
<summary>
Complete command line to run <command>msgmerge(1)</command> command.
See &t-link-msgmerge; tool and &b-link-POUpdate; builder.
</summary>
</cvar>
<!-- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -->
<cvar name="MSGMERGECOMSTR">
<summary>
String to be displayed when <command>msgmerge(1)</command> is invoked
(default: <literal>''</literal>, which means ``print &cv-link-MSGMERGECOM;'').
See &t-link-msgmerge; tool and &b-link-POUpdate; builder.
</summary>
</cvar>
<!-- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -->
<cvar name="MSGMERGEFLAGS">
<summary>
Additional flags to <command>msgmerge(1)</command> command.
See &t-link-msgmerge; tool and &b-link-POUpdate; builder.
</summary>
</cvar>
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