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auto_profiles.lua: apply profiles when conditions are truthy

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Instead of erroring when values returned by profile-cond expressions
aren't booleans, apply the relative profiles as long as the return
values are truthy. This allows shortening conditions like

profile-cond=path:match('foo') ~= nil

to

profile-cond=path:match('foo')
This commit is contained in:
Guido Cella 2023-04-04 21:38:04 +02:00 committed by Dudemanguy
parent b7ffe0d16e
commit 41372c5e1f
2 changed files with 11 additions and 13 deletions
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19
DOCS/man/mpv.rst
View File

@ -793,9 +793,10 @@ Conditional auto profiles
Profiles which have the ``profile-cond`` option set are applied automatically
if the associated condition matches (unless auto profiles are disabled). The
option takes a string, which is interpreted as Lua condition. If evaluating the
expression returns true, the profile is applied, if it returns false, it is
ignored. This Lua code execution is not sandboxed.
option takes a string, which is interpreted as Lua expression. If the
expression evaluates as truthy, the profile is applied. If the expression
errors or evaluates as falsy, the profile is not applied. This Lua code
execution is not sandboxed.
Any variables in condition expressions can reference properties. If an
identifier is not already defined by Lua or mpv, it is interpreted as property.
@ -816,13 +817,13 @@ cause errors if used in expressions. These are logged in verbose mode, and the
expression is considered to be false.
Whenever a property referenced by a profile condition changes, the condition
is re-evaluated. If the return value of the condition changes from false or
error to true, the profile is applied.
is re-evaluated. If the return value of the condition changes from falsy or
error to truthy, the profile is applied.
This mechanism tries to "unapply" profiles once the condition changes from true
to false. If you want to use this, you need to set ``profile-restore`` for the
profile. Another possibility it to create another profile with an inverse
condition to undo the other profile.
This mechanism tries to "unapply" profiles once the condition changes from
truthy to falsy or error. If you want to use this, you need to set
``profile-restore`` for the profile. Another possibility it to create another
profile with an inverse condition to undo the other profile.
Recursive profiles can be used. But it is discouraged to reference other
conditional profiles in a conditional profile, since this can lead to tricky

5
player/lua/auto_profiles.lua
View File

@ -25,11 +25,8 @@ local function evaluate(profile)
-- errors can be "normal", e.g. in case properties are unavailable
msg.verbose("Profile condition error on evaluating: " .. res)
res = false
elseif type(res) ~= "boolean" then
msg.verbose("Profile condition did not return a boolean, but "
.. type(res) .. ".")
res = false
end
res = not not res
if res ~= profile.status then
if res == true then
msg.info("Applying auto profile: " .. profile.name)