Update man page generation

Use xsltproc directly, rather than the docbook2man wrapper.
Turn the man page source into xml, and modernize it a bit.
Also, document the available commandline options.

configure.ac

@@ -80,10 +80,10 @@ AC_ARG_ENABLE(man,
                               [generate man pages [default=auto]])],,
               enable_man=maybe)
 AS_IF([test "$enable_man" != no], [
-  AC_PATH_PROG(DOCBOOK2MAN, docbook2man)
-  AS_IF([test -z "$DOCBOOK2MAN"], [
+  AC_PATH_PROG([XSLTPROC], [xsltproc])
+  AS_IF([test -z "$XSLTPROC"], [
     AS_IF([test "$enable_man" = yes], [
-      AC_MSG_ERROR([docbook2man is required for --enable-man])
+      AC_MSG_ERROR([xsltproc is required for --enable-man])
     ])
     enable_man=no
   ])

src/Makefile.am

@@ -119,8 +119,16 @@ if ENABLE_MAN
 man_MANS += gnome-software.1
 endif
 
-gnome-software.1: gnome-software.sgml
-	docbook2man $? > /dev/null
+XSLTPROC_FLAGS = \
+	--nonet \
+	--stringparam man.output.quietly 1 \
+	--stringparam funcsynopsis.style ansi \
+	--stringparam man.th.extra1.suppress 1 \
+	--stringparam man.authors.section.enabled 0 \
+	--stringparam man.copyright.section.enabled 0
+
+gnome-software.1: gnome-software.xml
+	$(AM_V_GEN) $(XSLTPROC) $(XSLTPROC_FLAGS) http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $<
 
 clean-local:
 	rm -f *~

src/gnome-software.sgml → src/gnome-software.xml

-<!doctype refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [
-  <!-- Please adjust the date whenever revising the manpage. -->
-  <!ENTITY package     "gnome-software">
-  <!ENTITY gnu         "<acronym>GNU</acronym>">
-  <!ENTITY gpl         "&gnu; <acronym>GPL</acronym>">
-]>
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+        "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<refentry id="gnome-software">
 
-<refentry>
   <refentryinfo>
-    <address>
-      <email>richard@hughsie.com</email>;
-    </address>
+    <title>gnome-software</title>
+    <productname>GNOME</productname>
     <author>
+      <contrib>Maintainer</contrib>
       <firstname>Richard</firstname>
       <surname>Hughes</surname>
+      <email>richard@hughsie.com</email>
     </author>
     <copyright>
       <year>2013</year>
       <holder>Richard Hughes</holder>
     </copyright>
-    &date;
   </refentryinfo>
+
   <refmeta>
     <refentrytitle>gnome-software</refentrytitle>
     <manvolnum>1</manvolnum>
+    <refmiscinfo class="manual">User Commands</refmiscinfo>
   </refmeta>
+
   <refnamediv>
-    <refname>&package;</refname>
-    <refpurpose>GNOME PackageKit Software Log Viewer</refpurpose>
+    <refname>gnome-software</refname>
+    <refpurpose>Install applications</refpurpose>
   </refnamediv>
+
   <refsynopsisdiv>
     <cmdsynopsis>
-      <command>&package;</command>
-      <arg><option>--verbose</option></arg>
+      <command>gnome-software</command>
+      <arg choice="opt" rep="repeat">OPTION</arg>
     </cmdsynopsis>
   </refsynopsisdiv>
+
   <refsect1>
-    <title>DESCRIPTION</title>
+    <title>Description</title>
     <para>
-      This manual page documents briefly the <command>&package;</command> command.
+      This manual page documents briefly the <command>gnome-software</command> command.
     </para>
     <para>
-      <command>&package;</command> allows you to add and remove applications and
-      update your system.
+      <command>gnome-software</command> allows you to add and remove
+      applications and update your system.
     </para>
   </refsect1>
+
   <refsect1>
-    <title>SEE ALSO</title>
-    <para>gnome-software (1).</para>
+    <title>Options</title>
+    <variablelist>
+      <varlistentry>
+        <term><option>-?</option>, <option>--help</option></term>
+        <listitem><para>Prints a short help text and exits.</para></listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><option>--version</option></term>
+        <listitem><para>Prints the program version and exits.</para></listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><option>--mode</option> <replaceable>MODE</replaceable></term>
+        <listitem><para>Starts gnome-software in the given mode. <replaceable>MODE</replaceable> can be 'updates', 'installed' or 'overview'.</para></listitem>
+      </varlistentry>
+    </variablelist>
   </refsect1>
+
   <refsect1>
-    <title>AUTHOR</title>
+    <title>Author</title>
     <para>This manual page was written by Richard Hughes <email>richard@hughsie.com</email>.
     </para>
   </refsect1>
 </refentry>
-
-<!-- Keep this comment at the end of the file
-Local variables:
-mode: sgml
-sgml-omittag:t
-sgml-shorttag:t
-sgml-minimize-attributes:nil
-sgml-always-quote-attributes:t
-sgml-indent-step:2
-sgml-indent-data:t
-sgml-parent-document:nil
-sgml-default-dtd-file:nil
-sgml-exposed-tags:nil
-sgml-local-catalogs:nil
-sgml-local-ecat-files:nil
-End:
--->
-