extensions-tool: Add a man page

https://gitlab.gnome.org/GNOME/gnome-shell/issues/1234

meson.build

@@ -137,6 +137,10 @@ bash_completion = dependency('bash-completion', required: false)
 if get_option('man')
   xsltproc = find_program('xsltproc')
 
+  if get_option('extensions_tool')
+    a2x = find_program('a2x')
+  endif
+
   subdir('man')
 endif
 

src/extensions-tool/man/gnome-extensions.txt

@@ -0,0 +1,100 @@
+GNOME-EXTENSIONS(1)
+===================
+:man manual: User Commands
+:man source: GNOME-EXTENSIONS-TOOL
+:doctype: manpage
+:date: August 2018
+
+NAME
+----
+gnome-extensions - Command line tool for managing GNOME extensions
+
+SYNOPSIS
+--------
+*gnome-extensions* help ['COMMAND']
+
+*gnome-extensions* version
+
+*gnome-extensions* enable 'UUID'
+
+*gnome-extensions* disable 'UUID'
+
+*gnome-extensions* list ['OPTION'...]
+
+*gnome-extensions* create ['OPTION'...]
+
+DESCRIPTION
+-----------
+*gnome-extensions* is a utility that makes some common GNOME extensions
+operations available on the command line.
+
+COMMANDS
+--------
+*help* ['COMMAND']::
+Displays a short synopsis of the available commands or provides
+detailed help on a specific command.
+
+*version*::
+Prints the program version.
+
+*enable* 'UUID'::
+Enables the extension identified by 'UUID'.
++
+The command will not detect any errors from the extension itself, use the
+*info* command to confirm that the extension state is *ENABLED*.
++
+If the extension is already enabled, the command will do nothing.
+
+*disable* 'UUID'::
+Disables the extension identified by 'UUID'.
++
+If the extension is not enabled, the command will do nothing.
+
+*list* ['OPTION'...]::
+Displays a list of installed extensions.
++
+.Options
+  *--user*;;
+    Include extensions installed in the user's *$HOME*
+
+  *--system*;;
+    Include extensions installed in the system
+
+  *--enabled*;;
+    Include enabled extensions
+
+  *--disabled*;;
+    Include disabled extensions
+
+  *-d*;;
+  *--details*;;
+    Show some extra information for each extension
+
+*create* ['OPTION'...]::
+Creates a new extension from a template.
++
+.Options
+  *--name*='NAME':::
+    Set the user-visible name in the extension's metadata
+    to 'NAME'
+
+  *--description*='DESC':::
+    Set the description in the extension's metadata to 'DESC'
+
+  *--uuid*='UUID':::
+    Set the unique extension ID in the metadata to 'UUID'
+
+  *-i*:::
+  *--interactive*:::
+    Prompt for any extension metadata that hasn't been provided
+    on the command line
+
+
+EXIT STATUS
+-----------
+On success 0 is returned, a non-zero failure code otherwise.
+
+BUGS
+----
+The tool is part of the gnome-shell project, and bugs should be reported
+in its issue tracker at https://gitlab.gnome.org/GNOME/gnome-shell/issues.

src/extensions-tool/man/meson.build

@@ -0,0 +1,7 @@
+custom_target('gnome-extensions.1',
+  input: ['gnome-extensions.txt', 'stylesheet.xsl'],
+  output: 'gnome-extensions.1',
+  command: [a2x, '-D', '@OUTDIR@', '--xsl-file', '@INPUT1@', '-f', 'manpage', '@INPUT0@'],
+  install_dir: mandir + '/man1',
+  install: true
+)

src/extensions-tool/man/stylesheet.xsl

@@ -0,0 +1,27 @@
+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+		version='1.0'>
+<xsl:import href="http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"/>
+
+<xsl:template match="variablelist/title">
+  <xsl:text>.PP&#10;</xsl:text>
+  <xsl:call-template name="bold">
+    <xsl:with-param name="node" select="."/>
+    <xsl:with-param name="context" select=".."/>
+  </xsl:call-template>
+  <xsl:text>&#10;</xsl:text>
+</xsl:template>
+
+<xsl:template match="varlistentry[preceding-sibling::title]">
+  <xsl:if test="not(preceding-sibling::varlistentry)">
+    <xsl:text>.RS 4&#10;</xsl:text>
+    <!-- comment out the leading .PP added by the original template -->
+    <xsl:text>.\"</xsl:text>
+  </xsl:if>
+  <xsl:apply-imports/>
+  <xsl:if test="position() = last()">
+    <xsl:text>.RE&#10;</xsl:text>
+  </xsl:if>
+</xsl:template>
+
+</xsl:stylesheet>

src/extensions-tool/meson.build

@@ -32,3 +32,7 @@ if bash_completion.found()
     install_dir: bash_completion.get_pkgconfig_variable('completionsdir')
   )
 endif
+
+if get_option('man')
+  subdir('man')
+endif