-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
-<!ENTITY % entities SYSTEM "custom-entities.ent" >
-%entities;
-]>
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
-<!--
- This file is part of systemd.
-
- Copyright 2014 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="sd_bus_path_encode">
+<refentry id="sd_bus_path_encode" xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>sd_bus_path_encode</title>
<productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>A monkey with a typewriter</contrib>
- <firstname>Zbigniew</firstname>
- <surname>Jędrzejewski-Szmek</surname>
- <email>zbyszek@in.waw.pl</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<refnamediv>
<refname>sd_bus_path_encode</refname>
+ <refname>sd_bus_path_encode_many</refname>
<refname>sd_bus_path_decode</refname>
+ <refname>sd_bus_path_decode_many</refname>
<refpurpose>Convert an external identifier into an object path and back</refpurpose>
</refnamediv>
<paramdef>char **<parameter>ret_path</parameter></paramdef>
</funcprototype>
+ <funcprototype>
+ <funcdef>int <function>sd_bus_path_encode_many</function></funcdef>
+ <paramdef>char **<parameter>out</parameter></paramdef>
+ <paramdef>const char *<parameter>path_template</parameter></paramdef>
+ <paramdef>…</paramdef>
+ </funcprototype>
+
<funcprototype>
<funcdef>int <function>sd_bus_path_decode</function></funcdef>
<paramdef>const char *<parameter>path</parameter></paramdef>
<paramdef>const char *<parameter>prefix</parameter></paramdef>
<paramdef>char **<parameter>ret_external_id</parameter></paramdef>
</funcprototype>
+
+ <funcprototype>
+ <funcdef>int <function>sd_bus_path_decode_many</function></funcdef>
+ <paramdef>const char *<parameter>path</parameter></paramdef>
+ <paramdef>const char *<parameter>path_template</parameter></paramdef>
+ <paramdef>…</paramdef>
+ </funcprototype>
</funcsynopsis>
</refsynopsisdiv>
always be <constant>NUL</constant>-terminated. The returned string
will be the concatenation of the bus path prefix plus an escaped
version of the external identifier string. This operation may be
- reversed with <function>sd_bus_decode()</function>. It is
+ reversed with <function>sd_bus_path_decode()</function>. It is
recommended to only use external identifiers that generally
require little escaping to be turned into valid bus path
identifiers (for example, by sticking to a 7-bit ASCII character
invalid in a bus object path by <literal>_</literal>, followed by a
hexadecimal value. As a special case, the empty string will be
replaced by a lone <literal>_</literal>.</para>
+
+ <para><function>sd_bus_path_encode_many()</function> works like
+ its counterpart <function>sd_bus_path_encode()</function>, but
+ takes a path template as argument and encodes multiple labels
+ according to its embedded directives. For each
+ <literal>%</literal> character found in the template, the caller
+ must provide a string via varargs, which will be encoded and
+ embedded at the position of the <literal>%</literal> character.
+ Any other character in the template is copied verbatim into the
+ encoded path.</para>
+
+ <para><function>sd_bus_path_decode_many()</function> does the
+ reverse of <function>sd_bus_path_encode_many()</function>. It
+ decodes the passed object path according to the given
+ path template. For each <literal>%</literal> character in the
+ template, the caller must provide an output storage
+ (<literal>char **</literal>) via varargs. The decoded label
+ will be stored there. Each <literal>%</literal> character will
+ only match the current label. It will never match across labels.
+ Furthermore, only a single directive is allowed per label.
+ If <literal>NULL</literal> is passed as output storage, the
+ label is verified but not returned to the caller.</para>
</refsect1>
<refsect1>
by the caller.</para>
</refsect1>
- <refsect1>
- <title>Notes</title>
-
- <para><function>sd_bus_path_encode()</function> and
- <function>sd_bus_path_decode()</function> are available as a
- shared library, which can be compiled and linked to with the
- <constant>libsystemd</constant> <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- file.</para>
- </refsect1>
+ <xi:include href="libsystemd-pkgconfig.xml" />
<refsect1>
<title>See Also</title>
projects / thirdparty / systemd.git / blobdiff