scripts: use the WpSettings safe APIs

Avoids Lua errors if a setting cannot be parsed or does not exist.

src/scripts/create-item.lua

@@ -16,7 +16,7 @@ function configProperties (node)
     ["item.node"] = node,
     ["item.plugged.usec"] = GLib.get_monotonic_time (),
     ["item.features.no-dsp"] =
-        Settings.get ("default-policy-audio.no-dsp"):parse(),
+        Settings.parse_boolean_safe ("default-policy-audio.no-dsp", false),
     ["item.features.monitor"] = true,
     ["item.features.control-port"] = false,
     ["node.id"] = node ["bound-id"],

src/scripts/monitors/v4l2.lua

@@ -5,9 +5,7 @@
 --
 -- SPDX-License-Identifier: MIT
 
-local config_settings = {
-
-}
+local config_settings = {}
 
 -- apply properties from rules defined in JSON .conf file
 function rulesApplyProperties(properties)

src/scripts/policy-bluetooth.lua

@@ -27,9 +27,9 @@
 -- settings file: policy.conf
 
 local use_persistent_storage =
-    Settings.get ("bt-policy-use-persistent-storage"):parse() or false
+    Settings.parse_boolean_safe ("bt-policy-use-persistent-storage", false)
 local use_headset_profile =
-    Settings.get ("bt-policy-media-role.use-headset-profile"):parse() or false
+    Settings.parse_boolean_safe ("bt-policy-media-role.use-headset-profile", true)
 
 local applications = {}
 local profile_restore_timeout_msec = 2000
@@ -45,8 +45,8 @@ local last_profiles = {}
 local active_streams = {}
 local previous_streams = {}
 
-local apps_setting = Settings.get ("bt-policy-media-role.applications"):parse()
-
+local apps_setting =
+    Settings.parse_array_safe ("bt-policy-media-role.applications")
 for i = 1, #apps_setting do
   applications [apps_setting [i]] = true
 end

src/scripts/policy-device-routes.lua

@@ -19,27 +19,11 @@
 -- settings file: device.conf
 
 local use_persistent_storage =
-  Settings.get ("device.use-persistent-storage"):parse() or false
-
--- the default volume to apply (optional property)
-local default_volume = 0.4^3
-local default_volume_json = Settings.get ("device.default-volume")
-if default_input_volume_json ~= nil then
-  local val = default_volume_json:parse()
-  if val ~= nil then
-    default_volume = val
-  end
-end
-
--- the default input volume to apply (optional property)
-local default_input_volume = 1.0
-local default_input_volume_json = Settings.get ("default-input-volume")
-if default_input_volume_json ~= nil then
-  local val = default_input_volume_json:parse()
-  if val ~= nil then
-    default_input_volume = val
-  end
-end
+    Settings.parse_boolean_safe ("device.use-persistent-storage", true)
+local default_volume =
+    Settings.parse_float_safe ("device.default-volume", 0.4^3)
+local default_input_volume =
+    Settings.parse_float_safe ("default-input-volume", 1.0)
 
 -- table of device info
 dev_infos = {}

src/scripts/policy-endpoint-client-links.lua

@@ -5,16 +5,8 @@
 --
 -- SPDX-License-Identifier: MIT
 
-local duck_level = Settings.get ("default-policy-duck.level"):parse() or 0.3
-
-local roles = {}
-local roles_json = Settings.get ("endpoints-roles")
-if roles_json ~= nil then
-  local val = roles_json:parse()
-  if val ~= nil then
-    roles = val
-  end
-end
+local duck_level = Settings.parse_float_safe ("default-policy-duck.level", 0.3)
+local roles = Settings.parse_object_safe ("endpoints-roles")
 
 function findRole(role)
   if role and not roles[role] then

src/scripts/policy-endpoint-client.lua

@@ -6,14 +6,8 @@
 -- SPDX-License-Identifier: MIT
 
 -- Receive script arguments from config.lua
-local roles = {}
-local roles_json = Settings.get ("endpoints-roles")
-if roles_json ~= nil then
-  local val = roles_json:parse()
-  if val ~= nil then
-    roles = val
-  end
-end
+
+local roles = Settings.parse_object_safe ("endpoints-roles")
 
 local self = {}
 self.scanning = false

src/scripts/policy-endpoint-device.lua

@@ -5,8 +5,8 @@
 --
 -- SPDX-License-Identifier: MIT
 
-local move = Settings.get ("default-policy-move"):parse() or false
-local follow = Settings.get ("default-policy-follow"):parse() or false
+local move = Settings.parse_boolean_safe ("default-policy-move", false)
+local follow = Settings.parse_boolean_safe ("default-policy-follow", false)
 
 local self = {}
 self.scanning = false

src/scripts/policy-hooks.lua

@@ -12,7 +12,7 @@
 local putils = require ("policy-utils")
 local cutils = require ("common-utils")
 
-local move = Settings.get ("default-policy-move"):parse () or false
+local move = Settings.parse_boolean_safe ("default-policy-move", false)
 
 function parseBool (var)
   return cutils.parseBool (var)

src/scripts/policy-node.lua

@@ -16,9 +16,10 @@
 
 -- settings file: policy.conf
 
-local move = Settings.get ("default-policy-move"):parse () or false
-local follow = Settings.get ("default-policy-follow"):parse () or false
-local filter_forward_format = Settings.get ("filter.forward-format"):parse () or false
+local move = Settings.parse_boolean_safe ("default-policy-move", false)
+local follow = Settings.parse_boolean_safe ("default-policy-follow", false)
+local filter_forward_format =
+    Settings.parse_boolean_safe ("filter.forward-format", false)
 
 local putils = require ("policy-utils")
 local cutils = require ("common-utils")

src/scripts/restore-stream.lua

@@ -18,12 +18,12 @@
 
 -- settings file: stream.conf
 
-config_restore_props = Settings.get ("stream_default.restore-props"):parse()
-    or false
-config_restore_target = Settings.get ("stream_default.restore-target"):parse()
-    or false
-config_default_channel_volume = Settings.get_float ("stream.default-channel-volume")
-    or 1.0
+config_restore_props =
+    Settings.parse_boolean_safe ("stream_default.restore-props", false)
+config_restore_target =
+    Settings.parse_boolean_safe ("stream_default.restore-target", false)
+config_default_channel_volume =
+    Settings.parse_float_safe ("stream.default-channel-volume", 1.0)
 
 function rulesApplyProperties (properties)
   local matched, mprops = Settings.apply_rule ("stream_default", properties)

src/scripts/static-endpoints.lua

@@ -6,14 +6,7 @@
 -- SPDX-License-Identifier: MIT
 
 -- Receive script arguments from config.lua
-local endpoints = {}
-local endpoints_json = Settings.get ("endpoints")
-if endpoints_json ~= nil then
-  local val = endpoints_json:parse()
-  if val ~= nil then
-    endpoints = val
-  end
-end
+local endpoints = Settings.parse_object_safe ("endpoints")
 
 function createEndpoint (factory_name, properties)
   -- create endpoint