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![Jason St. John](/assets/img/avatar_default.png)
Before: libsystemd-daemonpkg-config(1) After: libsystemd-daemon pkg-config(1) This fix is more complicated than it should be due to the consecutive XML elements separated by collapsible whitespace. Merging the lines and separating the XML elements with an en space or a non-breaking space is the only solution that results in one, and only one, space being inserted between them when testing. An em space results in two spaces being inserted.
142 lines
6.4 KiB
XML
142 lines
6.4 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="sd_journal_get_catalog">
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<refentryinfo>
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<title>sd_journal_get_catalog</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>sd_journal_get_catalog</refentrytitle>
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<manvolnum>3</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>sd_journal_get_catalog</refname>
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<refname>sd_journal_get_catalog_for_message_id</refname>
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<refpurpose>Retrieve message catalog entry</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcsynopsisinfo>#include <systemd/sd-journal.h></funcsynopsisinfo>
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<funcprototype>
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<funcdef>int <function>sd_journal_get_catalog</function></funcdef>
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<paramdef>sd_journal* <parameter>j</parameter></paramdef>
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<paramdef>char** <parameter>ret</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>int <function>sd_journal_get_catalog_for_message_id</function></funcdef>
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<paramdef>sd_id128_t <parameter>id</parameter></paramdef>
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<paramdef>char** <parameter>ret</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><function>sd_journal_get_catalog()</function>
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retrieves a message catalog entry for the current
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journal entry. This will look up an entry in the
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message catalog by using the
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<literal>MESSAGE_ID=</literal> field of the current
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journal entry. Before returning the entry all journal
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field names in the catalog entry text enclosed in "@"
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will be replaced by the respective field values of the
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current entry. If a field name referenced in the
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message catalog entry does not exist it the current
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journal entry the "@" will be removed but the field
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name otherwise left untouched.</para>
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<para><function>sd_journal_get_catalog_for_message_id()</function>
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works similar to
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<function>sd_journal_get_catalog()</function> but the
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entry is looked up by the specified message ID (no
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open journal context is necessary for this), and no
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field substitution is performed.</para>
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<para>For more information about the journal message
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catalog please refer to the <ulink
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url="http://www.freedesktop.org/wiki/Software/systemd/catalog">Journal
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Message Catalogs</ulink> documentation page.</para>
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</refsect1>
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<refsect1>
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<title>Return Value</title>
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<para><function>sd_journal_get_catalog()</function>
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and
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<function>sd_journal_get_catalog_for_message_id()</function>
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return 0 on success or a negative errno-style error
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code. If no matching message catalog entry is found
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-ENOENT is returned.</para>
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<para>On successful return, <parameter>ret</parameter>
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points to a new string, which must be freed with
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<citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
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</para>
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</refsect1>
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<refsect1>
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<title>Notes</title>
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<para>The <function>sd_journal_get_catalog()</function> and
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<function>sd_journal_get_catalog_for_message_id()</function>
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interfaces are available as shared library, which can
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be compiled and linked to with the
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<constant>libsystemd-journal</constant> <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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file.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_journal_open</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_journal_next</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_journal_get_data</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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<citerefentry><refentrytitle>malloc</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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