[nautilus/wip/jtojnar/gi-docgen] docs: Switch to gi-docgen

[Jan Tojnar <jtojnar src gnome org>]

commit 5cbe0ee354d18ccac9073e59eb45e7ee6c98730b
Author: Jan Tojnar <jtojnar gmail com>
Date:   Wed Aug 10 21:15:44 2022 +0200

    docs: Switch to gi-docgen

 .../libnautilus-extension-docs.xml                 |  39 ------
 .../libnautilus-extension-overrides.txt            |   0
 .../libnautilus-extension-sections.txt             | 154 ---------------------
 docs/reference/libnautilus-extension/meson.build   |  20 ---
 .../reference/libnautilus-extension/version.xml.in |   1 -
 docs/reference/meson.build                         |  32 ++++-
 docs/reference/nautilus.toml.in                    |  22 +++
 docs/reference/urlmap.js                           |   9 ++
 libnautilus-extension/meson.build                  |   2 +-
 meson.build                                        |   4 +-
 10 files changed, 66 insertions(+), 217 deletions(-)
---
diff --git a/docs/reference/meson.build b/docs/reference/meson.build
index a352d2680..b617ba914 100644
--- a/docs/reference/meson.build
+++ b/docs/reference/meson.build
@@ -1 +1,31 @@
-subdir('libnautilus-extension')
+toml_data = configuration_data()
+toml_data.set('VERSION', meson.project_version())
+
+nautilus_toml = configure_file(
+  input: 'nautilus.toml.in',
+  output: 'nautilus.toml',
+  configuration: toml_data,
+)
+
+custom_target(
+  'nautilus-doc',
+  input: [
+    nautilus_toml,
+    nautilus_extension_gir[0],
+  ],
+  output: 'nautilus',
+  command: [
+    gi_docgen,
+    'generate',
+    '--quiet',
+    '--add-include-path=@0@'.format(meson.project_source_root() / 'libnautilus-extension'),
+    '--config=@INPUT0@',
+    '--output-dir=@OUTPUT@',
+    '--no-namespace-dir',
+    '--content-dir=@0@'.format(meson.current_source_dir()),
+    '@INPUT1@',
+  ],
+  build_by_default: true,
+  install: true,
+  install_dir: docdir,
+)
diff --git a/docs/reference/nautilus.toml.in b/docs/reference/nautilus.toml.in
new file mode 100644
index 000000000..1d160ad62
--- /dev/null
+++ b/docs/reference/nautilus.toml.in
@@ -0,0 +1,22 @@
+[library]
+version = "@VERSION@"
+description = "Nautilus Extension API"
+license = "GPL-2.0-or-later"
+browse_url = "https://gitlab.gnome.org/GNOME/nautilus/";
+repository_url = "https://gitlab.gnome.org/GNOME/nautilus.git";
+devhelp = true
+search_index = true
+
+[theme]
+name = "basic"
+show_index_summary = true
+show_class_hierarchy = true
+
+[source-location]
+# The base URL for the web UI
+base_url = "https://gitlab.gnome.org/GNOME/nautilus/-/blob/master/";
+# The format for links, using "filename" and "line" for the format
+file_format = "{filename}#L{line}"
+
+[extra]
+urlmap_file = "urlmap.js"
diff --git a/docs/reference/urlmap.js b/docs/reference/urlmap.js
new file mode 100644
index 000000000..84b05c3e6
--- /dev/null
+++ b/docs/reference/urlmap.js
@@ -0,0 +1,9 @@
+// SPDX-FileCopyrightText: 2021 GNOME Foundation
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+// A map between namespaces and base URLs for their online documentation
+baseURLs = [
+  ["GLib", "https://docs.gtk.org/glib/";],
+  ["Gio", "https://docs.gtk.org/gio/";],
+  ["GObject", "https://docs.gtk.org/gobject/";],
+];
diff --git a/libnautilus-extension/meson.build b/libnautilus-extension/meson.build
index 457166993..3c2ab4bcf 100644
--- a/libnautilus-extension/meson.build
+++ b/libnautilus-extension/meson.build
@@ -65,7 +65,7 @@ libnautilus_extension = shared_library(
 )
 
 if get_option('introspection')
-  gnome.generate_gir(
+  nautilus_extension_gir = gnome.generate_gir(
     libnautilus_extension,
     export_packages: [
       'libnautilus-extension'
diff --git a/meson.build b/meson.build
index 99464e9ff..65dacb133 100644
--- a/meson.build
+++ b/meson.build
@@ -23,6 +23,7 @@ desktopdir = join_paths(datadir, 'applications')
 includedir = get_option('includedir')
 libdir = get_option('libdir')
 localedir = get_option('localedir')
+docdir = datadir / 'doc'
 extensiondir = join_paths(libdir, 'nautilus', 'extensions-' + nautilus_extension_version)
 servicedir = join_paths(datadir, 'dbus-1', 'services')
 
@@ -121,6 +122,7 @@ endif
 tracker_sparql = dependency('tracker-sparql-3.0')
 xml = dependency('libxml-2.0', version: '>= 2.7.8')
 cloudproviders = dependency('cloudproviders', version: '>= 0.3.1')
+gi_docgen = find_program('gi-docgen', required: get_option('docs'))
 
 ####################
 # End dependencies #
@@ -203,7 +205,7 @@ subdirs = [
 # Conditional building #
 ########################
 
-if get_option('docs')
+if gi_docgen.found()
   subdirs += 'docs'
 endif
 if get_option('tests') != 'none'