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🎥 Command line media player
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-- converts val to type of desttypevallocal function typeconv(desttypeval, val) if type(desttypeval) == "boolean" then if val == "yes" then val = true elseif val == "no" then val = false else msg.error("Error: Can't convert '" .. val .. "' to boolean!") val = nil end elseif type(desttypeval) == "number" then if tonumber(val) ~= nil then val = tonumber(val) else msg.error("Error: Can't convert '" .. val .. "' to number!") val = nil end end return valend
-- performs a deep-copy of the given option valuelocal function opt_copy(val) return val -- no tables currentlyend
-- compares the given option values for equalitylocal function opt_equal(val1, val2) return val1 == val2end
-- performs a deep-copy of an entire option tablelocal function opt_table_copy(opts) local copy = {} for key, value in pairs(opts) do copy[key] = opt_copy(value) end return copyend
local function read_options(options, identifier, on_update) local option_types = opt_table_copy(options) if identifier == nil then identifier = mp.get_script_name() end msg.debug("reading options for " .. identifier)
-- read config file local conffilename = "script-opts/" .. identifier .. ".conf" local conffile = mp.find_config_file(conffilename) local f = conffile and io.open(conffile,"r") if f == nil then -- config not found msg.debug(conffilename .. " not found.") else -- config exists, read values msg.verbose("Opened config file " .. conffilename .. ".") local linecounter = 1 for line in f:lines() do if line:sub(#line) == "\r" then line = line:sub(1, #line - 1) end if string.find(line, "#") ~= 1 then local eqpos = string.find(line, "=") if eqpos ~= nil then local key = string.sub(line, 1, eqpos-1) local val = string.sub(line, eqpos+1)
-- match found values with defaults if option_types[key] == nil then msg.warn(conffilename..":"..linecounter.. " unknown key '" .. key .. "', ignoring") else local convval = typeconv(option_types[key], val) if convval == nil then msg.error(conffilename..":"..linecounter.. " error converting value '" .. val .. "' for key '" .. key .. "'") else options[key] = convval end end end end linecounter = linecounter + 1 end io.close(f) end
--parse command-line options local prefix = identifier.."-" -- command line options are always applied on top of these local conf_and_default_opts = opt_table_copy(options)
local function parse_opts(full, opt) for key, val in pairs(full) do if string.find(key, prefix, 1, true) == 1 then key = string.sub(key, string.len(prefix)+1)
-- match found values with defaults if option_types[key] == nil then msg.warn("script-opts: unknown key " .. key .. ", ignoring") else local convval = typeconv(option_types[key], val) if convval == nil then msg.error("script-opts: error converting value '" .. val .. "' for key '" .. key .. "'") else opt[key] = convval end end end end end
--initial parse_opts(mp.get_property_native("options/script-opts"), options)
--runtime updates if on_update then local last_opts = opt_table_copy(options)
mp.observe_property("options/script-opts", "native", function(_, val) local new_opts = opt_table_copy(conf_and_default_opts) parse_opts(val, new_opts) local changelist = {} for k, v in pairs(new_opts) do if not opt_equal(last_opts[k], v) then -- copy to user options[k] = opt_copy(v) changelist[k] = true end end last_opts = new_opts if next(changelist) ~= nil then on_update(changelist) end end) end
end
-- backwards compatibility with broken read_options export_G.read_options = read_options
return { read_options = read_options,}