add: load ENV variables as args

main.lua

@@ -2,6 +2,8 @@ local fs      = require 'bee.filesystem'
 local util    = require 'utility'
 local version = require 'version'
 
+require 'config.env'
+
 local function getValue(value)
     if     value == 'true' or value == nil then
         value = true

script/config/env.lua

@@ -0,0 +1,67 @@
+-- Handles loading environment arguments
+
+---Convert a string to boolean
+---@param v string
+local function strToBool(v)
+    return v == "true"
+end
+
+---ENV args are defined here.
+---- `name` is the ENV arg name
+---- `key` is the value used to index `_G` for setting the argument
+---- `converter` if present, will be used to convert the string value into another type
+---@type { name: string, key: string, converter: fun(value: string): any }[]
+local vars = {
+    {
+        name = "LLS_CHECK_LEVEL",
+        key = "CHECKLEVEL",
+    },
+    {
+        name = "LLS_CHECK_PATH",
+        key = "CHECK",
+    },
+    {
+        name = "LLS_CONFIG_PATH",
+        key = "CONFIGPATH",
+    },
+    {
+        name = "LLS_DOC_OUT_PATH",
+        key = "DOC_OUT_PATH",
+    },
+    {
+        name = "LLS_DOC_PATH",
+        key = "DOC",
+    },
+    {
+        name = "LLS_FORCE_ACCEPT_WORKSPACE",
+        key = "FORCE_ACCEPT_WORKSPACE",
+        converter = strToBool,
+    },
+    {
+        name = "LLS_LOCALE",
+        key = "LOCALE",
+    },
+    {
+        name = "LLS_LOG_LEVEL",
+        key = "LOGLEVEL",
+    },
+    {
+        name = "LLS_LOG_PATH",
+        key = "LOGPATH",
+    },
+    {
+        name = "LLS_META_PATH",
+        key = "METAPATH",
+    },
+}
+
+for _, var in ipairs(vars) do
+    local value = os.getenv(var.name)
+    if value then
+        if var.converter then
+            value = var.converter(value)
+        end
+
+        _G[var.key] = value
+    end
+end