Get/Set Configuration Script
The lazyman menus include the capability to get and set configuration values for the Lazyman, LazyIde, and Webdev Neovim configurations. This is done using a new Neovim feature introduced in version 0.9, the ability to invoke Neovim with a Lua script:
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nvim -l /path/to/some_script.lua
The specified Lua script is executed in the Neovim runtime environment and then Neovim exits.
Lazyman uses the Lua script ~/.config/nvim-Lazyman/scripts/get_conf.lua to manage Neovim configuration settings. This script can retrieve the current value of a setting, set the value of a supported setting, list all supported setting names, or display the location of the Neovim configuration.
Lazyman configuration script
The ~/.config/nvim-Lazyman/scripts/lazyman_config.sh script is used to display the Lazyman Neovim Configuration menus and invoke the get_conf.lua script to get and set configuration values. The usage message of lazyman_config.sh:
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Usage: lazyman_config [-a] [-d] [-i] [-m menu] [-s name value] [-u]
Where:
-a lists all configuration names and exits
-d specifies debug mode
-i indicates initialize conditional plugin configurations and exit
-m 'menu' specifies the menu to display (conf, form, lsp, plugins)
-s 'name value' indicates set the value of configuration 'name' to 'value'
if 'name' is 'get' then 'value' is the configuration name to get
if 'name' is a table then 'value' is the table entry to set
follow 'value' with 'enable' or 'disable'
-u displays this usage message and exits
Examples:
Display the 'Formatters' menu
lazyman_config -m form
Set the theme to 'kanagawa'
lazyman_config -s theme kanagawa
Get the theme setting
lazyman_config -s get theme
Disable 'gopls' language server
lazyman_config -s lsp_servers gopls disable
Get/Set configuration script source
The scripts/get_conf.lua script is used to get or set configuration values for those Lazyman Neovim configurations with a lazyman menu configuration interface.
The scripts/get_conf.lua source code:
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-- Invoke with 'nvim -l get_conf.lua conf_name'
-- Where 'conf_name' is:
-- - one of the entries in lua/configuration.lua
-- - the keyword 'config_home' to get configuration location info
-- - the keyword 'list_names' to lists all configuration entry names
-- - an option/variable name to retrieve its value
--
-- For example, to retrieve the Lazyman configuration 'namespace' setting:
--
-- #!/bin/bash
-- NVIM_APPNAME="nvim-Lazyman" \
-- nvim -l ~/.config/nvim-Lazyman/scripts/get_conf.lua namespace
--
-- or, to retrieve the value of the 'mouse' option in the Webdev config:
--
-- #!/bin/bash
-- NVIM_APPNAME="nvim-Webdev" \
-- nvim -l ~/.config/nvim-Lazyman/scripts/get_conf.lua mouse
local config = vim.inspect(_G.arg[1])
local arg = string.gsub(config, '"', "")
local app_name = os.getenv("NVIM_APPNAME") or ""
local function get_var(var_name, default_value)
local s, v = pcall(function()
return vim.api.nvim_get_option(var_name)
end)
if s then
return v
else
s, v = pcall(function()
return vim.api.nvim_get_var(var_name)
end)
if s then
return v
else
return default_value
end
end
end
local function print_var(entry)
if type(entry) == "string" then
io.write(entry .. "\n")
elseif type(entry) == "table" then
table.sort(entry)
for _, val in ipairs(entry) do
io.write(val .. "\n")
end
else
io.write(tostring(entry) .. "\n")
end
end
if arg == "config_home" then
local config_home = vim.fn.stdpath("config")
io.write("Neovim configuration location = " .. vim.fn.expand(config_home) .. "\n")
io.write("NVIM_APPNAME = " .. app_name .. "\n")
else
local var_val = ""
if app_name == "nvim-Lazyman" then
local settings = require("configuration")
if arg == "list_names" then
for k,_ in pairs(settings) do
io.write(k .. "\n")
end
else
local entry = settings[arg]
if entry ~= nil then
print_var(entry)
else
var_val = get_var(arg, "")
print_var(var_val)
end
end
else
var_val = get_var(arg, "")
print_var(var_val)
end
end