feat: add alias command

nature/commands/alias.lua

@@ -0,0 +1,38 @@
+local commander = require 'commander'
+
+local function removeQuote(str)
+	if (string.sub(str, 1, 1) == '"' and string.sub(str, #str, #str) == '"') or
+		(string.sub(str, 1, 1) == '\'' and string.sub(str, #str, #str) == '\'') then
+		return string.sub(str, 2, #str - 1)
+	end
+
+	return str
+end
+
+commander.register('alias', function(args, sinks)
+	local aliases = hilbish.aliases.list()
+	local function printAlias(name)
+		sinks.out:writeln(name .. "='" .. aliases[name] .. "'")
+	end
+
+	if #args == 0 then
+		for alias, _ in pairs(aliases) do
+			printAlias(alias)
+		end
+		return
+	end
+
+	local sepIdx = string.find(args[1], "=")
+	if sepIdx == nil then
+		if aliases[args[1]] == nil then
+			return 1
+		end
+
+		printAlias(args[1])
+		return
+	end
+
+	local alias = string.sub(args[1], 1, sepIdx - 1)
+	local cmd = removeQuote(string.sub(args[1], sepIdx + 1))
+	hilbish.aliases.add(alias, cmd)
+end)