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6ccca55752
After some brainstorming with Simon, see https://bugzilla.gnome.org/show_bug.cgi?id=647577#c8 Signed-off-by: David Zeuthen <davidz@redhat.com>
745 lines
27 KiB
XML
745 lines
27 KiB
XML
<refentry id="gdbus-codegen" lang="en">
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<refmeta>
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<refentrytitle>gdbus-codegen</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="manual">User Commands</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>gdbus-codegen</refname>
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<refpurpose>D-Bus code and documentation generator</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>gdbus-codegen</command>
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<arg><option>--interface-prefix</option> <replaceable>org.project.Prefix</replaceable></arg>
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<arg><option>--generate-c-code</option> <replaceable>OUTFILES</replaceable></arg>
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<arg><option>--c-namespace</option> <replaceable>YourProject</replaceable></arg>
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<arg><option>--c-generate-object-manager</option></arg>
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<arg><option>--generate-docbook</option> <replaceable>OUTFILES</replaceable></arg>
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<group choice="plain" rep="repeat">
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<arg>
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<option>--annotate</option>
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<replaceable>element</replaceable>
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<option>--key</option>
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<replaceable>key</replaceable>
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<option>--value</option>
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<replaceable>key</replaceable>
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</arg>
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</group>
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<arg choice="plain">FILE</arg>
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<arg>
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<arg choice="plain" rep="repeat">FILE</arg>
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</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<command>gdbus-codegen</command> is used to generate code and/or
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documentation for one or more D-Bus interfaces. The tool reads
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<ulink
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url="http://dbus.freedesktop.org/doc/dbus-specification.html#introspection-format">D-Bus
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Introspection XML</ulink> files and generates output files. The
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tool currently supports generating C code (via
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<option>--generate-c-code</option>) and Docbook XML (via
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<option>--generate-docbook</option>).
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</para>
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</refsect1>
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<refsect1>
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<title>Generating C code</title>
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<para>
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When generating C code, an abstract
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#GTypeInterface<!-- -->-derived type is generated for each D-Bus
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interface. Additionally, for every generated type,
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<type>FooBar</type>, two concrete instantiable types,
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<type>FooBarProxy</type> and <type>FooBarSkeleton</type>, implementing
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said interface are also generated. The former is derived from
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#GDBusProxy and intended for use on the client side
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while the latter is derived from the
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#GDBusInterfaceSkeleton type making it easy to export on a
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#GDBusConnection either directly or via a
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#GDBusObjectManagerServer instance.
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</para>
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</refsect1>
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<refsect1>
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<title>Generating Docbook documentation</title>
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<para>
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Each generated Docbook XML file (see the
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<option>--generate-docbook</option> option for details) is a <ulink
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url="http://www.docbook.org/tdg/en/html/refentry.html"><literal>RefEntry</literal></ulink>
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article describing the D-Bus interface.
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</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>
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The following options are supported:
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</para>
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<variablelist>
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<varlistentry>
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<term><option>--interface-prefix</option> <replaceable>org.project.Prefix.</replaceable></term>
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<listitem>
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<para>
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A prefix to strip from all D-Bus interface names when
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calculating the typename for the C binding and the Docbook
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<ulink
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url="http://www.docbook.org/tdg/en/html/primary.html">sortas
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attribute</ulink>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--generate-docbook</option> <replaceable>OUTFILES</replaceable></term>
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<listitem>
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<para>
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Generate Docbook Documentation for each D-Bus interface and
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put it in <filename>OUTFILES-NAME.xml</filename> where
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<literal>NAME</literal> is a place-holder for the interface
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name, e.g. <literal>net.Corp.FooBar</literal> and so on.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--generate-c-code</option> <replaceable>OUTFILES</replaceable></term>
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<listitem>
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<para>
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Generate C code for all D-Bus interfaces and put it in
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<filename>OUTFILES.c</filename> and
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<filename>OUTFILES.h</filename>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--c-namespace</option> <replaceable>YourProject</replaceable></term>
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<listitem>
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<para>
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The namespace to use for generated C code. This must be
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provided in CamelCase format.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--c-generate-object-manager</option></term>
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<listitem>
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<para>
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If this option is passed a #GDBusObjectManagerClient
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subclass with an appropriate #GDBusProxyTypeFunc is
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generated.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--annotate</option></term>
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<listitem>
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<para>
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Used together with <option>--key</option> and
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<option>--value</option> to annotate the given XML files. It
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can be used with interfaces, methods, signals, properties
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and arguments in the following way:
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</para>
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<informalexample><programlisting><![CDATA[
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gdbus-codegen --c-namespace MyApp \
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--generate-c-code myapp-generated \
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--annotate "org.project.InterfaceName" \
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--key org.gtk.GDBus.Name --value MyFrobnicator \
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--annotate "org.project.InterfaceName:Property" \
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--key bar --value bat \
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--annotate "org.project.InterfaceName.Method()" \
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--key org.freedesktop.DBus.Deprecated --value true \
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--annotate "org.project.InterfaceName.Method()[arg_name]" \
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--key snake --value hiss \
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--annotate "org.project.InterfaceName::Signal" \
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--key cat --value meow \
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--annotate "org.project.InterfaceName::Signal[arg_name]" \
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--key dog --value wuff \
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myapp-dbus-interfaces.xml
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]]></programlisting></informalexample>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Supported D-Bus Annotations</title>
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<para>
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The following D-Bus annotations are supported by
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<command>gdbus-codegen</command>:
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</para>
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<variablelist>
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<varlistentry>
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<term><literal>org.gtk.GDBus.Name</literal></term>
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<listitem>
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<para>
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Can be used on any <literal><interface></literal>,
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<literal><method></literal>,
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<literal><signal></literal> and
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<literal><property></literal> element to specify the
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name to use.
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</para>
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<para>
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For interfaces where this annotation is not specified, the
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name used is the D-Bus interface name stripped with the
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prefix given with <option>--interface-prefix</option> and with
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the dots removed and initial characters capitalized. For
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example the D-Bus interface
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<literal>com.acme.Coyote</literal> the name used is
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<type>ComAcmeCoyote</type>. For the D-Bus interface
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<literal>org.project.Bar.Frobnicator</literal> with
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<option>--interface-prefix</option>
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<literal>org.project.</literal>, the name used is
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<type>BarFrobnicator</type>.
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</para>
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<para>
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For methods, signals and properties the name used is
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calculated by transforming
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<literal>NameGivenThisWay</literal> into
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<literal>name_given_this_way</literal>, e.g. roughly
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converting from camel-case to lower-case with underscores
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using certain heuristics.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>org.gtk.GDBus.Since</literal></term>
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<listitem>
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<para>
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Can be used on any <literal><interface></literal>,
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<literal><method></literal>,
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<literal><signal></literal> and
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<literal><property></literal> element to specify the
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version (any free-form string but compared using a
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version-aware sort function) the element appeared in.
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</para>
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<para>
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When generating C code, this field is used to ensure
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function pointer order for preserving ABI/API.
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</para>
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<para>
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When generating Docbook XML, the value of this tag appears
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in the documentation.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>org.gtk.GDBus.C.ForceGVariant</literal></term>
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<listitem>
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<para>
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If set to a non-empty string, a #GVariant instance will
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be used instead of the natural C type. This annotation can
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be used on any <literal><arg></literal> and
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<literal><property></literal> element.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>org.gtk.GDBus.DocString</literal></term>
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<listitem>
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<para>
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A string with Docbook content for documentation. This annotation can
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be used on <literal><interface></literal>,
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<literal><method></literal>,
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<literal><signal></literal>,
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<literal><property></literal> and
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<literal><arg></literal> elements.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>org.gtk.GDBus.DocString.Short</literal></term>
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<listitem>
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<para>
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A string with Docbook content for short/brief
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documentation. This annotation can only be used on
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<literal><interface></literal> elements.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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As an easier alternative to using the
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<literal>org.gtk.GDBus.DocString</literal> annotation, note that
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XML parser used by <command>gdbus-codegen</command> parses XML
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comments in a way similar to <ulink
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url="http://www.gtk.org/gtk-doc/">gtk-doc</ulink>:
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<informalexample><programlisting><![CDATA[
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<!--
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net.Corp.Bar:
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@short_description: A short description
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A <emphasis>longer</emphasis> description.
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This is a new paragraph.
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-->
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<interface name="net.corp.Bar">
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<!--
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FooMethod:
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@greeting: The docs for greeting parameter.
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@response: The docs for response parameter.
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The docs for the actual method.
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-->
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<method name="FooMethod">
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<arg name="greeting" direction="in" type="s"/>
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<arg name="response" direction="out" type="s"/>
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</method>
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<!--
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BarSignal:
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@blah: The docs for blah parameter.
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@boo: The docs for boo parameter.
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@since: 2.30
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The docs for the actual signal.
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-->
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<signal name="BarSignal">
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<arg name="blah" type="s"/>
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<arg name="boo" type="s"/>
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</signal>
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<!-- BazProperty: The docs for the property. -->
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<property name="BazProperty" type="s" access="read"/>
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</interface>
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]]></programlisting></informalexample>
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</para>
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<para>
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Note that <literal><![CDATA[@since]]></literal> can be used in any inline
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documentation bit (e.g. for interfaces, methods, signals and
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properties) to set the <literal>org.gtk.GDBus.Since</literal>
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annotation. For the <literal>org.gtk.GDBus.DocString</literal>
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annotation (and inline comments), note that substrings of the form
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<literal><![CDATA[#net.Corp.Bar]]></literal>,
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<literal><![CDATA[net.Corp.Bar.FooMethod()]]></literal>,
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<literal><![CDATA[#net.Corp.Bar::BarSignal]]></literal> and
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<literal><![CDATA[#net.Corp.InlineDocs:BazProperty]]></literal> are all
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expanded to links to the respective interface, method, signal and
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property.
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</para>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<para>
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Consider the following D-Bus Introspection XML.
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</para>
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<informalexample><programlisting><![CDATA[
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<interface name="net.Corp.MyApp.Frobber">
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<method name="HelloWorld">
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<arg name="greeting" direction="in" type="s"/>
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<arg name="response" direction="out" type="s"/>
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</method>
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<signal name="Notification">
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<arg name="icon_blob" type="ay"/>
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<arg name="height" type="i"/>
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<arg name="messages" type="as"/>
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</signal>
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<property name="Verbose" type="b" access="readwrite"/>
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</interface>
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]]></programlisting>
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</informalexample>
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<para>
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If <command>gdbus-codegen</command> is used on this file like this:
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</para>
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<informalexample><programlisting><![CDATA[
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gdbus-codegen --generate-c-code myapp-generated \
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--c-namespace MyApp \
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--interface-prefix net.corp.MyApp. \
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net.Corp.MyApp.Frobber.xml
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]]></programlisting></informalexample>
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<para>
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two files called
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<filename>myapp-generated.[ch]</filename> are
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generated. The files provide an abstract
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#GTypeInterface<!-- -->-derived type called
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<type>MyAppFrobber</type> as well as two instantiable types with
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the same name but suffixed with <type>Proxy</type> and
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<type>Skeleton</type>. The generated file, roughly, contains the
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following facilities:
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</para>
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<informalexample><programlisting><![CDATA[
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/* GType macros for the three generated types */
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#define MY_APP_TYPE_FROBBER (my_app_frobber_get_type ())
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#define MY_APP_TYPE_FROBBER_SKELETON (my_app_frobber_skeleton_get_type ())
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#define MY_APP_TYPE_FROBBER_PROXY (my_app_frobber_proxy_get_type ())
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typedef struct _MyAppFrobber MyAppFrobber; /* Dummy typedef */
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typedef struct
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{
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GTypeInterface parent_iface;
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/* Signal handler for the ::notification signal */
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void (*notification) (MyAppFrobber *proxy,
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GVariant *icon_blob,
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gint height,
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const gchar* const *messages);
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/* Signal handler for the ::handle-hello-world signal */
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gboolean (*handle_hello_world) (MyAppFrobber *proxy,
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GDBusMethodInvocation *invocation,
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const gchar *greeting);
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} MyAppFrobberIface;
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/* Asynchronously calls HelloWorld() */
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void
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my_app_frobber_call_hello_world (MyAppFrobber *proxy,
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const gchar *greeting,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean
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my_app_frobber_call_hello_world_finish (MyAppFrobber *proxy,
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gchar **out_response,
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GAsyncResult *res,
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GError **error);
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/* Synchronously calls HelloWorld(). Blocks calling thread. */
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gboolean
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my_app_frobber_call_hello_world_sync (MyAppFrobber *proxy,
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const gchar *greeting,
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gchar **out_response,
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GCancellable *cancellable,
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GError **error);
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/* Completes handling the HelloWorld() method call */
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void
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my_app_frobber_complete_hello_world (MyAppFrobber *object,
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GDBusMethodInvocation *invocation,
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const gchar *response);
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/* Emits the ::notification signal / Notification() D-Bus signal */
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void
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my_app_frobber_emit_notification (MyAppFrobber *object,
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GVariant *icon_blob,
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gint height,
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const gchar* const *messages);
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/* Gets the :verbose GObject property / Verbose D-Bus property.
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* Does no blocking I/O.
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*/
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gboolean my_app_frobber_get_verbose (MyAppFrobber *object);
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/* Sets the :verbose GObject property / Verbose D-Bus property.
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* Does no blocking I/O.
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*/
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void my_app_frobber_set_verbose (MyAppFrobber *object,
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gboolean value);
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/* Gets the interface info */
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GDBusInterfaceInfo *my_app_frobber_interface_info (void);
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/* Creates a new skeleton object, ready to be exported */
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MyAppFrobber *my_app_frobber_skeleton_new (void);
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/* Client-side proxy constructors.
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*
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* Additionally, _new_for_bus(), _new_for_bus_finish() and
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* _new_for_bus_sync() proxy constructors are also generated.
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*/
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void
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my_app_frobber_proxy_new (GDBusConnection *connection,
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GDBusProxyFlags flags,
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const gchar *name,
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const gchar *object_path,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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MyAppFrobber *
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my_app_frobber_proxy_new_finish (GAsyncResult *res,
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GError **error);
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MyAppFrobber *
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my_app_frobber_proxy_new_sync (GDBusConnection *connection,
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GDBusProxyFlags flags,
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const gchar *name,
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const gchar *object_path,
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GCancellable *cancellable,
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GError **error);
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]]></programlisting></informalexample>
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<para>
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Thus, for every D-Bus method, there will be three C functions for
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calling the method, one #GObject signal for handling an incoming
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call and one C function for completing an incoming call. For every
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D-Bus signal, there's one #GObject signal and one C function for
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emitting it. For every D-Bus property, two C functions are
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generated (one setter, one getter) and one #GObject property. The
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following table summarizes the generated facilities and where they
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are applicable:
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</para>
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<informaltable>
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<tgroup cols="3">
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<thead>
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<row>
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<entry></entry>
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<entry>Client</entry>
|
|
<entry>Server</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>Types</entry>
|
|
<entry>Use <type>MyAppFrobberProxy</type></entry>
|
|
<entry>Any type implementing the <type>MyAppFrobber</type> interface</entry>
|
|
</row>
|
|
<row>
|
|
<entry>Methods</entry>
|
|
<entry>Use <function>m_a_f_hello_world()</function> to call.</entry>
|
|
<entry>Receive via the <function>handle_hello_world()</function> signal handler. Complete the call with <function>m_a_f_complete_hello_world()</function></entry>
|
|
</row>
|
|
<row>
|
|
<entry>Signals</entry>
|
|
<entry>Connect to the <function>::notification</function> GObject signal.</entry>
|
|
<entry>Use <function>m_a_f_emit_notification()</function> to emit signal.</entry>
|
|
</row>
|
|
<row>
|
|
<entry>Properties (Reading)</entry>
|
|
<entry>Use <function>m_a_f_get_verbose()</function> or <parameter>:verbose</parameter>.</entry>
|
|
<entry>Implement #GObject<!-- -->'s <function>get_property()</function> vfunc.</entry>
|
|
</row>
|
|
<row>
|
|
<entry>Properties (writing)</entry>
|
|
<entry>Use <function>m_a_f_set_verbose()</function> or <parameter>:verbose</parameter>.</entry>
|
|
<entry>Implement #GObject<!-- -->'s <function>set_property()</function> vfunc.</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
|
|
<refsect2>
|
|
<title>Client-side usage</title>
|
|
<para>
|
|
You can use the generated proxy type with the generated
|
|
constructors:
|
|
</para>
|
|
<informalexample><programlisting><![CDATA[
|
|
MyAppFrobber *proxy;
|
|
GError *error;
|
|
|
|
error = NULL;
|
|
proxy = my_app_frobber_proxy_new_for_bus_sync (
|
|
G_BUS_TYPE_SESSION,
|
|
G_DBUS_PROXY_FLAGS_NONE,
|
|
"net.Corp.MyApp", /* bus name */
|
|
"/net/Corp/MyApp/SomeFrobber", /* object */
|
|
NULL, /* GCancellable* */
|
|
&error);
|
|
/* do stuff with proxy */
|
|
g_object_unref (proxy);
|
|
]]></programlisting></informalexample>
|
|
<para>
|
|
Instead of using the generic #GDBusProxy facilities, one can use
|
|
the generated methods such as
|
|
<function>my_app_frobber_call_hello_world()</function> to invoke
|
|
the <function>net.Corp.MyApp.Frobber.HelloWorld()</function>
|
|
D-Bus method, connect to the the
|
|
<function>::notification</function> GObject signal to receive
|
|
the <function>net.Corp.MyApp.Frobber::Notication</function>
|
|
D-Bus signal and get/set the
|
|
<parameter>net.Corp.MyApp.Frobber:Verbose</parameter> D-Bus
|
|
Property using either the GObject property
|
|
<parameter>:verbose</parameter> or the
|
|
<function>my_app_get_verbose()</function> and
|
|
<function>my_app_set_verbose()</function> methods. Use the
|
|
standard #GObject::notify signal to listen to property changes.
|
|
</para>
|
|
<para>
|
|
Note that all property access is via #GDBusProxy<!-- -->'s
|
|
property cache so no IO is ever done when reading properties.
|
|
Also note that setting a property will cause the
|
|
<ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-properties">org.freedesktop.DBus.Properties.Set</ulink> method to be
|
|
called on the remote object. This call, however, is asynchronous
|
|
so setting a property won't block. Further, the change is
|
|
delayed and no error checking is possible.
|
|
</para>
|
|
</refsect2>
|
|
|
|
<refsect2>
|
|
<title>Server-side usage</title>
|
|
<para>
|
|
The generated <type>MyAppFrobber</type> interface is designed so
|
|
it is easy to implement it in a #GObject
|
|
subclass. For example, to handle
|
|
<function>HelloWorld()</function> method invocations, set the
|
|
vfunc for <function>handle_hello_hello_world()</function> in the
|
|
<type>MyAppFrobberIface</type> structure. Similary, to handle
|
|
the <parameter>net.Corp.MyApp.Frobber:Verbose</parameter>
|
|
property override the <parameter>:verbose</parameter> #GObject
|
|
property from the subclass. To emit a signal, use
|
|
e.g. <function>my_app_emit_signal()</function> or
|
|
g_signal_emit_by_name().
|
|
</para>
|
|
<para>
|
|
Instead of subclassing, it is often easier to use the generated
|
|
<type>MyAppFrobberSkeleton</type> subclass. To handle incoming
|
|
method calls, use <function>g_signal_connect()</function> with
|
|
the <function>::handle-*</function> signals and instead of
|
|
overriding #GObject<!-- -->'s
|
|
<function>get_property()</function> and
|
|
<function>set_property()</function> vfuncs, use
|
|
g_object_get() and
|
|
g_object_set() or the generated property
|
|
getters and setters (the generated class has an internal
|
|
property bag implementation).
|
|
</para>
|
|
<informalexample><programlisting><![CDATA[
|
|
static gboolean
|
|
on_handle_hello_world (MyAppFrobber *object,
|
|
GDBusMethodInvocation *invocation,
|
|
const gchar *greeting,
|
|
gpointer user_data)
|
|
{
|
|
if (g_strcmp0 (greeting, "Boo") != 0)
|
|
{
|
|
gchar *response;
|
|
response = g_strdup_printf ("Word! You said `%s'.", greeting);
|
|
my_app_complete_hello_world (object, invocation, response);
|
|
g_free (response);
|
|
}
|
|
else
|
|
{
|
|
g_dbus_method_invocation_return_error (MY_APP_ERROR,
|
|
MY_APP_ERROR_NO_WHINING,
|
|
"Hey, %s, there will be no whining!",
|
|
g_dbus_method_invocation_get_sender (invocation));
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
[...]
|
|
|
|
object = my_app_frobber_skeleton_new ();
|
|
my_app_frobber_set_verbose (object, TRUE);
|
|
|
|
g_signal_connect (object,
|
|
"handle-hello-world",
|
|
G_CALLBACK (on_handle_hello-world),
|
|
some_user_data);
|
|
|
|
[...]
|
|
|
|
error = NULL;
|
|
id = g_dbus_interface_register_object (G_DBUS_INTERFACE (object),
|
|
connection,
|
|
"/path/of/object",
|
|
&error);
|
|
]]></programlisting></informalexample>
|
|
<para>
|
|
To facility atomic changesets (multiple properties changing at
|
|
the same time), #GObject::notify signals are queued up when
|
|
received. The queue is drained in an idle handler and will cause
|
|
emissions of the <ulink
|
|
url="http://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-properties">org.freedesktop.DBus.Properties::PropertiesChanged</ulink>
|
|
signal with all the properties that has changed. Use
|
|
g_dbus_interface_skeleton_flush() or g_dbus_object_skeleton_flush() to
|
|
empty the queue immediately.
|
|
</para>
|
|
</refsect2>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>C Type Mapping</title>
|
|
<para>
|
|
Scalar types
|
|
(type-strings
|
|
<link linkend="G-VARIANT-TYPE-BOOLEAN:CAPS">'b'</link>,
|
|
<link linkend="G-VARIANT-TYPE-BYTE:CAPS">'y'</link>,
|
|
<link linkend="G-VARIANT-TYPE-INT16:CAPS">'n'</link>,
|
|
<link linkend="G-VARIANT-TYPE-UINT16:CAPS">'q'</link>,
|
|
<link linkend="G-VARIANT-TYPE-INT32:CAPS">'i'</link>,
|
|
<link linkend="G-VARIANT-TYPE-UINT32:CAPS">'u'</link>,
|
|
<link linkend="G-VARIANT-TYPE-INT64:CAPS">'x'</link>,
|
|
<link linkend="G-VARIANT-TYPE-UINT64:CAPS">'t'</link>,
|
|
<link linkend="G-VARIANT-TYPE-HANDLE:CAPS">'h'</link> and
|
|
<link linkend="G-VARIANT-TYPE-DOUBLE:CAPS">'d'</link>)
|
|
),
|
|
strings (type-strings
|
|
<link linkend="G-VARIANT-TYPE-STRING:CAPS">'s'</link>,
|
|
<link linkend="G-VARIANT-TYPE-BYTESTRING:CAPS">'ay'</link>,
|
|
<link linkend="G-VARIANT-TYPE-OBJECT-PATH:CAPS">'o'</link> and
|
|
<link linkend="G-VARIANT-TYPE-SIGNATURE:CAPS">'g'</link>) and
|
|
arrays of string (type-strings
|
|
<link linkend="G-VARIANT-TYPE-STRING-ARRAY:CAPS">'as'</link> and
|
|
<link linkend="G-VARIANT-TYPE-BYTESTRING-ARRAY:CAPS">'aay'</link>)
|
|
are mapped to the natural types,
|
|
e.g. #gboolean, #gdouble, #gint, <link linkend="gchararray">gchar*</link>,
|
|
<link linkend="GStrv">gchar**</link> and
|
|
so on. Everything else is mapped to the #GVariant
|
|
type.
|
|
</para>
|
|
<para>
|
|
This automatic mapping can be turned off by using the annotation
|
|
<literal>org.gtk.GDBus.C.ForceGVariant</literal> - if used then a
|
|
#GVariant is always exchanged instead of the
|
|
corresponding native C type. This annotation may be convenient to
|
|
use when using
|
|
bytestrings (type-string <link linkend="G-VARIANT-TYPE-BYTESTRING:CAPS">'ay'</link>)
|
|
for data that could have embedded NUL bytes.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Stability Guarantees</title>
|
|
<para>
|
|
No guarantees about the API and ABI of the code generated by
|
|
<command>gdbus-codegen</command> are given. This means that code
|
|
generated by future versions of this program may have a different
|
|
API or ABI even if the underlying D-Bus interface hasn't
|
|
changed. As such, always include the generated code in
|
|
distribution tarballs and never expose the code in any stable
|
|
interfaces.
|
|
</para>
|
|
<para>
|
|
Future versions of <command>gdbus-codegen</command> will provide
|
|
ABI and API guarantees on the generated code.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Author</title>
|
|
<para>
|
|
Written by David Zeuthen <email><![CDATA[zeuthen@gmail.com]]></email> with
|
|
a lot of help from many others.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Bugs</title>
|
|
<para>
|
|
Please send bug reports to either the distribution bug tracker
|
|
or the upstream bug tracker at
|
|
<ulink url="https://bugzilla.gnome.org/enter_bug.cgi?product=glib"/>.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See also</title>
|
|
<para>
|
|
<citerefentry>
|
|
<refentrytitle>gdbus</refentrytitle><manvolnum>1</manvolnum>
|
|
</citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|