implement builder and instance

1 files changed, 54 insertions, 0 deletions

diff --git a/src/lib/instance.lua b/src/lib/instance.lua
new file mode 100644
index 0000000..2de2c5f
--- /dev/null
+++ b/src/lib/instance.lua
@@ -0,0 +1,54 @@
+Instance = {}
+
+function Instance:new()
+	local instance = {
+		entries = {},
+	}
+
+	setmetatable(instance, self)
+	self.__index = self
+
+	return instance
+end
+
+function Instance:register(path, content)
+	self.entries[#self.entries + 1] = {
+		path = path,
+		content = content,
+	}
+end
+
+function Instance:save_to(target)
+	for _, entry in ipairs(self.entries) do
+		local target_entry = Path:new(target) / entry.path
+
+		if entry.content == nil then
+			target_entry:make_directory { create_parents = true }
+		else
+			target_entry:parent():make_directory { create_parents = true }
+			local file = target_entry:open('w')
+			file:write(entry.content)
+			file:close()
+		end
+	end
+end
+
+function Instance:__tostring()
+	local output = [[{
+  entries = {
+]]
+
+	for _, entry in ipairs(self.entries) do
+		output = output .. [[    {
+      path = ]] .. tostring(entry.path) .. [[,
+      content = ]] .. (entry.content and ("[[\n        " .. entry.content:gsub('\n', '\n        ') .. "\n      ]]") or "nil") .. [[,
+    },
+]]
+	end
+
+	output = output .. [[  }
+}
+]]
+
+	return output
+end