Embed mruby and better clipboard support

include/io/knot.h

@@ -115,8 +115,8 @@ LineIterator *begin_l_iter(Knot *root, uint32_t start_line);
 // Each subsequent call returns the next line as a null terminated string
 // `it` is the iterator returned from begin_l_iter
 // After getting the necessary lines free the iterator (no need to go upto
-// the end) returns null if there are no more lines All return strings
-// `must` be freed by the caller
+// the end) returns null if there are no more lines
+// The string must not be freed
 char *next_line(LineIterator *it, uint32_t *out_len);
 
 // Returns the previous line as a null terminated string

include/pch.h

@@ -4,12 +4,12 @@
 #define PCRE2_CODE_UNIT_WIDTH 8
 #define PCRE_WORKSPACE_SIZE 512
 
-#include <mruby.h>
-#include <mruby/array.h>
-#include <mruby/compile.h>
-#include <mruby/hash.h>
-#include <mruby/irep.h>
-#include <mruby/string.h>
+#include "mruby.h"
+#include "mruby/array.h"
+#include "mruby/compile.h"
+#include "mruby/hash.h"
+#include "mruby/irep.h"
+#include "mruby/string.h"
 #include <nlohmann/json.hpp>
 #include <pcre2.h>
 extern "C" {

include/scripting/decl.h

@@ -29,6 +29,8 @@ struct BarLine {
 void setup_ruby_bindings(mrb_state *mrb, RClass *C_module);
 void ruby_start();
 void ruby_shutdown();
+void ruby_copy(const char *text, size_t len);
+std::string ruby_paste();
 void load_theme();
 void load_languages_info();
 uint8_t read_line_endings();

include/scripting/libcrib.rb

@@ -1,3 +1,65 @@
+module Clipboard
+  @clip = ""
+  @os = :os_name_placed_here
+
+  class << self
+    def command_exists?(cmd)
+      system("command -v #{cmd} > /dev/null 2>&1")
+    end
+    def copy(text)
+      if @os == :windows
+        IO.popen("clip", "w") { |f| f.write(text) }
+      elsif @os == :mac
+        IO.popen("pbcopy", "w") { |f| f.write(text) }
+      elsif @os == :linux
+        if ENV["XDG_SESSION_TYPE"]&.downcase == "wayland" || ENV["WAYLAND_DISPLAY"]
+          if command_exists?("wl-copy")
+            IO.popen("wl-copy", "w") { |f| f.write(text) }
+          else
+            osc52_copy(text)
+          end
+        elsif ENV["XDG_SESSION_TYPE"]&.downcase == "x11" || ENV["DISPLAY"]
+          if command_exists?("xsel")
+            IO.popen("xsel --clipboard --input", "w") { |f| f.write(text) }
+          elsif command_exists?("xclip")
+            IO.popen("xclip -selection clipboard", "w") { |f| f.write(text) }
+          else
+            osc52_copy(text)
+          end
+        end
+      end
+      @clip = text
+    end
+    def paste
+      if @os == :windows
+        return `powershell -NoProfile -Command Get-Clipboard`
+      elsif @os == :mac
+        return `pbpaste`
+      elsif @os == :linux
+        if ENV["XDG_SESSION_TYPE"]&.downcase == "wayland" || ENV["WAYLAND_DISPLAY"]
+          if command_exists?("wl-copy")
+            return `wl-paste`
+          end
+        elsif ENV["XDG_SESSION_TYPE"]&.downcase == "x11" || ENV["DISPLAY"]
+          if command_exists?("xsel")
+            return `xsel --clipboard --output`
+          elsif command_exists?("xclip")
+            return `xclip -selection clipboard -o`
+          else
+            return @clip
+          end
+        end
+      end
+      return ""
+    end
+    def osc52_copy(text)
+      encoded = [text].pack("m0")
+      print "\e]52;c;#{encoded}\a"
+      text
+    end
+  end
+end
+
 module C
   @lsp_config = {
     "clangd" => [
@@ -262,7 +324,7 @@ module C
   @highlighters = {}
   @b_startup = nil
   @b_shutdown = nil
-  @b_bar = lambda do |info|
+  @b_bar = proc do |info|
     # mode, lang_name, warnings, lsp_name, filename, foldername, line, max_line, width
     # puts info.inspect
     mode_color = 0x82AAFF
@@ -294,20 +356,27 @@ module C
     highlights << { fg: lang_info[:color], bg: 0x24272d, start: 13, length: 2 }
     highlights << { fg: 0xced4df, bg: 0x24272d, start: 15, length: filename.length }
     highlights << { fg: 0x24272d, bg: 0x000000, start: 15 + filename.length, length: 1 }
-    return {
+    next {
       text: starting,
       highlights: highlights
     }
   end
+  @b_copy = proc do |text|
+    Clipboard.copy(text)
+  end
+  @b_paste = proc do
+    next Clipboard.paste
+  end
 
   class << self
     attr_accessor :theme, :lsp_config, :languages,
                   :line_endings, :highlighters
-    attr_reader :b_startup, :b_shutdown, :b_extra_highlights, :b_bar
+    attr_reader :b_startup, :b_shutdown, :b_extra_highlights,
+                :b_bar, :b_copy, :b_paste
 
-    # def bar=(block)
-    #   @b_bar = block
-    # end
+    def bar=(&block)
+      @b_bar = block
+    end
 
     def startup(&block)
       @b_startup = block
@@ -317,6 +386,14 @@ module C
       @b_shutdown = block
     end
 
+    def copy(&block)
+      @b_copy = block
+    end
+
+    def paste(&block)
+      @b_paste = block
+    end
+
     def extra_highlights(&block)
       @b_extra_highlights = block
     end

include/syntax/line_tree.h

@@ -5,17 +5,12 @@
 
 struct LineTree {
   void clear() {
-    std::unique_lock lock(mtx);
     clear_node(root);
     root = nullptr;
     stack_size = 0;
   }
-  void build(uint32_t x) {
-    std::unique_lock lock(mtx);
-    root = build_node(x);
-  }
+  void build(uint32_t x) { root = build_node(x); }
   LineData *at(uint32_t x) {
-    std::shared_lock lock(mtx);
     LineNode *n = root;
     while (n) {
       uint32_t left_size = n->left ? n->left->size : 0;
@@ -31,7 +26,6 @@ struct LineTree {
     return nullptr;
   }
   LineData *start_iter(uint32_t x) {
-    std::shared_lock lock(mtx);
     stack_size = 0;
     LineNode *n = root;
     while (n) {
@@ -52,7 +46,6 @@ struct LineTree {
   }
   void end_iter() { stack_size = 0; }
   LineData *next() {
-    std::shared_lock lock(mtx);
     while (stack_size) {
       auto &f = stack[stack_size - 1];
       LineNode *n = f.node;
@@ -73,21 +66,16 @@ struct LineTree {
     return nullptr;
   }
   void insert(uint32_t x, uint32_t y) {
-    std::unique_lock lock(mtx);
     if (x > subtree_size(root))
       x = subtree_size(root);
     root = insert_node(root, x, y);
   }
   void erase(uint32_t x, uint32_t y) {
-    std::unique_lock lock(mtx);
     if (x + y > subtree_size(root))
       x = subtree_size(root) - y;
     root = erase_node(root, x, y);
   }
-  uint32_t count() {
-    std::shared_lock lock(mtx);
-    return subtree_size(root);
-  }
+  uint32_t count() { return subtree_size(root); }
   ~LineTree() { clear(); }
 
 private:
@@ -117,7 +105,6 @@ private:
   LineNode *root = nullptr;
   Frame stack[32];
   std::atomic<uint8_t> stack_size = 0;
-  std::shared_mutex mtx;
   static constexpr uint32_t LEAF_TARGET = 256;
   LineTree::LineNode *erase_node(LineNode *n, uint32_t x, uint32_t y) {
     if (!n || y == 0)

include/syntax/parser.h

@@ -17,10 +17,8 @@ struct Parser {
   mrb_value parser_block = mrb_nil_value();
   mrb_value match_block = mrb_nil_value();
   bool is_custom{false};
-  std::atomic<uint32_t> scroll_max{UINT32_MAX - 2048};
+  std::atomic<uint32_t> scroll_max{0};
   std::atomic<bool> scroll_dirty{false};
-  std::mutex mutex;
-  std::mutex data_mutex;
   LineTree line_tree;
   UniqueQueue<uint32_t> dirty_lines;
 

include/utils/utils.h

@@ -155,9 +155,6 @@ std::string get_exe_dir();
 char *load_file(const char *path, uint32_t *out_len, bool *out_eol);
 Language language_for_file(const char *filename);
 
-void copy_to_clipboard(const char *text, size_t len);
-char *get_from_clipboard(uint32_t *out_len);
-
 template <typename T>
 inline T *safe_get(std::map<uint16_t, T> &m, uint16_t key) {
   auto it = m.find(key);