From 4be8a483e2f9d657772922a0b46d8759ed3970c4 Mon Sep 17 00:00:00 2001
From: Possseidon <xpossseidon@gmail.com>
Date: Tue, 20 Sep 2022 16:36:37 +0200
Subject: [PATCH] Start implementation of clipboard.

---
 code/Editor.lua    | 19 ++++++++++++++++---
 code/clipboard.lua | 23 +++++++++++++++++++++++
 code/update.lua    |  1 +
 3 files changed, 40 insertions(+), 3 deletions(-)
 create mode 100644 code/clipboard.lua

diff --git a/code/Editor.lua b/code/Editor.lua
index ea9f697..d2a4f64 100644
--- a/code/Editor.lua
+++ b/code/Editor.lua
@@ -1,4 +1,5 @@
 local lexLua = require "code.lexers.lexLua"
+local clipboard = require "code.clipboard"
 local Highlighter = require "code.Highlighter"
 
 ---@class Point
@@ -686,17 +687,29 @@ end
 
 ---TODO
 function Editor:cut()
-  -- TODO
+  self:copy()
 end
 
 ---TODO
 function Editor:copy()
-  -- TODO
+  local selectedText = self:selectedText()
+  if selectedText then
+    clipboard.set(selectedText, false)
+  else
+    -- local x, y =
+    -- clipboard.set(self:(), true)
+  end
 end
 
 ---TODO
 function Editor:paste()
-  -- TODO
+  local text, fullLine = clipboard.get()
+  if fullLine then
+    local x, y = self:getCursor()
+    self:replaceLines(y, y - 1, text, x, y) -- TODO: Where to put cursor? Same x next line?
+  else
+    self:insert(text)
+  end
 end
 
 ---TODO
diff --git a/code/clipboard.lua b/code/clipboard.lua
new file mode 100644
index 0000000..941b0b5
--- /dev/null
+++ b/code/clipboard.lua
@@ -0,0 +1,23 @@
+local clipboard = {}
+
+local filename = ".code-clipboard"
+
+---Returns the current content of the clipboard.
+---@return string text, boolean fullLine
+function clipboard.get()
+  local file = fs.open(filename, "rb")
+  local data = file.readAll()
+  file.close()
+  return data:sub(2), data:sub(1, 1) == "\1"
+end
+
+---Sets the content of the clipboard with the given values.
+---@param text string
+---@param fullLine boolean?
+function clipboard.set(text, fullLine)
+  local file = fs.open(filename, "wb")
+  file.write((fullLine and "\1" or "\0") .. text)
+  file.close()
+end
+
+return clipboard
diff --git a/code/update.lua b/code/update.lua
index 5d10dc0..3d8bbdd 100644
--- a/code/update.lua
+++ b/code/update.lua
@@ -21,6 +21,7 @@ local githubPossseidon = "https://raw.githubusercontent.com/Possseidon/"
 addRequests(githubPossseidon .. "cc-code/main", "", {
   "code/highlighter/vscode.lua",
   "code/class.lua",
+  "code/clipboard.lua",
   "code/Code.lua",
   "code/Editor.lua",
   "code/Highlighter.lua",