add utf8_char_t struct

.gitea/workflows/build.yml

@@ -0,0 +1,35 @@
+name: Build project
+
+on:
+  push:
+    branches: ["main"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          tokens: ${{ secrets.GITEA_TOKEN }}
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y meson ninja-build gcc
+
+      - name: Configure Meson
+        run: meson setup build
+
+      - name: Build project
+        run: meson compile -C build
+
+      - name: Run tests
+        run: ctest --test-dir build || true
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: beluga
+          path: build/beluga

.gitignore

@@ -1,3 +1,3 @@
-tmp/*
-bin/*
+build/*
 doc/*
+beluga.wiki/*

Makefile

@@ -1,32 +0,0 @@
-##
-# TEST
-#
-# @file
-# @version 0.1
-
-BELUGA_OUTPUT=bin
-
-BUILD_FLAGS=-Wall -Wextra -pedantic
-
-build: main.c src/*
-	if [ ! -d $(BELUGA_OUTPUT) ]; then mkdir $(BELUGA_OUTPUT); fi
-	$(CC) main.c -o $(BELUGA_OUTPUT)/beluga src/* $(BUILD_FLAGS)
-
-DEBUG_FLAGS=-Wall -Wextra -pedantic -Werror -fsanitize=address -g
-
-debug:  main.c src/*
-	if [ ! -d $(BELUGA_OUTPUT) ]; then mkdir $(BELUGA_OUTPUT); fi
-	$(CC) main.c -o $(BELUGA_OUTPUT)/beluga src/* $(DEBUG_FLAGS)
-
-doc:
-	if [ ! -d doc/ ]; then mkdir doc; fi
-	doxygen
-
-clean:
-	rm -r $(BELUGA_OUTPUT)
-	rm -rf doc/
-	rm -rf tmp/
-
-all: build doc
-
-# end

README.md

@@ -1,26 +1,33 @@
 # Beluga
 
-Beluga is a project of CLI text editor that will fit perfectly with your azerty keyboard.
+Beluga is a project of CLI text editor that uses lisp as configuration language.
+It's abviously only working for **Linux**.
 
 ## Requirements
 
-You will only need **make** or **gcc** to compile the editor.
+You will only need **meson** and a **C compiler** to compile the editor.
 
 ## Installation
+### From source
+Here is the installation line for development version:
 
-Here is the installation line :
+```git clone https://homelinuxserver.ddns.net/git/arthur/beluga.git ~/.beluga && cd ~/.beluga && meson setup build && meson compile -C build```
 
-```git clone --branch V1.0 --single-branch https://github.com/le-cocotier/beluga.git ~/.beluga && cd ~/.beluga && make build```
+The executable file will be `build/beluga`. Feel free to add it to your path.
 
-The executable file will be in `bin/beluga`. Feel free to add it to your path.
+### From installation script ( prefered )
 
-You can either run `make all` if you're interested by the doxygen documentation.
+Just clone the repo and execute the script `install.sh`. It will automatically add beluga to your path.
 
 ## Getting start
 
 To open an existing file just type :
-```beluga path_to_my_file```
+```./build/beluga path_to_my_file```
 
-The only keybinds that you will need will be :
- - Ctrl-Q : leave the editor
- - Ctrl-S : Save a file
+Here is some few command that you will need :
+
+| keybind| command          |
+|--------|------------------|
+| Ctrl-Q | leave the editor |
+| Ctrl-S | Save a file      |
+| Ctrl-O | open file        |

assets/beluga.txt

@@ -0,0 +1,43 @@
+                      **#%#*****###%**
+                *##+--------------------=##*  
+             #*=----------------------------=*#*                                 
+          #*------------------------------------*#                               
+        %+----------------------------------------=#*                            
+       #+---------------------------------------------##                            
+     *#-------------------------------------------------=##                         
+    *#----------------------------------------------------:-##
+    #----------------------------------------------------------##                   
+   #=--------------------------------------------------------------##                
+  +--------------------------+@#-%*-----------------------------------#*         
+  +--------------------------%@@@@#-------------------------------------**                              BELUGA - VERSION 1.1
+  *-=-------------------------#@@*---------------------------------------=%
+  %*#==--------------------------------------------------------------------+#                           ----- KEY-BINDS -----
+  *%%=-=--------------------------------------------------------------------=#                          CTRL-q         leave
+  %=--------------------------------------------------------------------------#*                        CTRL-s          save
+ %-----------------------------------------------------------------------------**                       CTRL-o     open-file
+*+--=---===----=---------------=*-----------------------------------------------** 
+ #--=##      *#%#*+==----==+**+----------------------=  ***=---------------------% 
+ *%**=-----------====    ==---------------------------------=+#+-----------------=#                                 
+   *%=----------------------------------------------------------=#*---------------#                                 
+     ##=----------------------------------=------------------------+%=------------+#                                
+       #%+---------------------------------=*------------------------+%------------#                                
+         *#%*=-------------=-----------------#-------------------------#+----------#                                
+             **#%#*******+=======-------------#=------------------------#----------#                                
+                #===#*=======------------------#*----=-----------=--=##*-----------#                                
+                 -====##=------------------------*%+------------=*#+=====----------#                                
+                 --=====+#*=----------------------=-=+*#####***+=======-----------=*                                
+                %------=====*%*=-------------------------========-----------------+*                                
+                 *-=--------====%%###+=--------------------------=-----------------#                                
+                  #-----------=%        +*##%%%%%%@@%%%%####*==---------------------**                              
+                    %=-------#*                                  #%*=-----------------+#                              
+                     *%+--=##                                       ##=-----------------=#*                           
+                        **                                       #+----=-------------------#*                       
+                                                               %+----------------------------#*                     
+                                                             *%-------------==----------------+#                    
+                                                            ##--------------==------------------#                     
+                                                           *#--------------===%-----------------=%                  
+                                                          ##---------------=-##*-----------------+#                 
+                                                        *#---------------==#+=#%-----------------%                 
+                                                       *%---------------+#      %*---------------#*                  
+                                                      *#------------=+#*          #%*=-----------#*                  
+                                                       #****##******                 *#%%##+=----%                 

config/init.lisp

@@ -0,0 +1,34 @@
+;; MACROS
+
+(define TAB-LENGTH 4)
+(define QUIT-TIMES 1)
+
+;; FUNCTIONS
+
+(define editor-delete-next-char (lambda () (
+                                            (move-cursor "right")
+                                            (editor-delete-previous-char)
+                                            )
+                                  )
+  )
+
+
+;; KEY MAPPING
+
+(map-key "CTRL-q" editor-quit)
+(map-key "CTRL-d" editor-save)
+(map-key "ARROW-UP" '(move-cursor "up"))
+(map-key "ARROW-DOWN" '(move-cursor "down"))
+(map-key "ARROW-RIGHT" '(move-cursor "right"))
+(map-key "ARROW-LEFT" '(move-cursor "left"))
+(map-key "ENTER" editor-insert-new-line)
+(map-key "CTRL-a" move-cursor-beg-line)
+(map-key "CTRL-e" move-cursor-end-line)
+(map-key "BACKSPACE" editor-delete-previous-char)
+(map-key "DEL" editor-delete-next-char)
+(map-key "PAGE-UP" move-cursor-page-up)
+(map-key "PAGE-DOWN" move-cursor-page-down)
+(map-key "CTRL-o" editor-open-file)
+(map-key "CTRL-k" editor-del-row)
+(map-key "CTRL-s" editor-find)
+

include/append_buffer.h

@@ -5,7 +5,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-void abAppend(struct abuf *ab, const char *s, int len);
+void abAppend(struct abuf *ab, const unsigned char *s, int len);
 
 void abFree(struct abuf *ab);
 

include/builtins.h

@@ -0,0 +1,40 @@
+#ifndef BUILTINS_H_
+#define BUILTINS_H_
+
+#include "lisp.h"
+
+Lisp moveCursor(Lisp args, LispError *e, LispContext ctx);
+
+Lisp mapKey(Lisp args, LispError *e, LispContext ctx);
+
+void registerBuiltin(char * key_sequence, LispCFunc f);
+
+Lisp editorQuit(Lisp args, LispError *e, LispContext ctx);
+
+Lisp l_editorSave(Lisp args, LispError *e, LispContext ctx);
+
+Lisp l_editorInsertNewLine(Lisp args, LispError* e, LispContext ctx);
+
+Lisp moveCursorBeginLine(Lisp args, LispError *e, LispContext ctx);
+
+Lisp moveCursorEndLine(Lisp args, LispError *e, LispContext ctx);
+
+Lisp deletePreviousChar(Lisp args, LispError *e, LispContext ctx);
+
+Lisp editorMoveCursorPageUp(Lisp args, LispError* e, LispContext ctx);
+
+Lisp editorMoveCursorPageDown(Lisp args, LispError *e, LispContext ctx);
+
+Lisp editorOpenFile(Lisp args, LispError *e, LispContext ctx);
+
+Lisp editorPrintC(Lisp args, LispError *e, LispContext ctx);
+
+Lisp addPackage(Lisp args, LispError *e, LispContext ctx);
+
+Lisp editorDelRow_L(Lisp args, LispError *e, LispContext ctx);
+
+Lisp editorFind_L(Lisp args, LispError *e, LispContext ctx);
+
+Lisp editorReadChar_L(Lisp args, LispError *e, LispContext ctx);
+
+#endif

include/data.h

@@ -1,9 +1,18 @@
 #ifndef DATA_H_
 #define DATA_H_
 
+#include <stdio.h>
 #include <termios.h>
 #include <time.h>
 
+#include "lisp.h"
+
+
+typedef struct{
+  unsigned char c[4];
+  char len;
+} utf_8_char_t;
+
 /**
  * \struct erow
  * \brief Store one editor row
@@ -13,10 +22,62 @@
 typedef struct erow {
   int size;     /**< Size of the line */
   int rsize;    /**< Size of the render line */
-  char *chars;  /**< Characters of the line */
-  char *render; /**< The actual line we will print */
+  utf_8_char_t *chars;  /**< Characters of the line */
+  utf_8_char_t *render; /**< The actual line we will print */
 } erow;
 
+enum editorStatus_e {
+  IDLE,
+  READ_ONLY,
+  READ_AND_WRITE, 
+};
+
+struct const_t {
+  int TAB_LENGTH;
+  int QUIT_TIMES;
+};
+
+// Key types
+typedef enum {
+    KEY_CHAR,           // Regular character or UTF-8
+    KEY_CTRL,           // Ctrl+letter
+    KEY_ALT,            // Alt+letter
+    KEY_ARROW,          // Arrow keys
+    KEY_FUNCTION,       // Function keys
+    KEY_SPECIAL,        // Tab, Enter, ESC, Backspace, etc.
+    KEY_NAVIGATION,     // Home, End, PgUp, PgDn, Insert, Delete
+    KEY_UNKNOWN
+} KeyType;
+
+// Modifiers
+typedef enum {
+    MOD_NONE = 0,
+    MOD_SHIFT = 1,
+    MOD_ALT = 2,
+    MOD_CTRL = 4
+} KeyModifier;
+
+// Key information structure
+typedef struct {
+    KeyType type;
+    int modifiers;      // Bitmask of KeyModifier
+    union {
+        unsigned int codepoint;  // For KEY_CHAR
+        char ctrl_char;          // For KEY_CTRL (A-Z)
+        char alt_char;           // For KEY_ALT
+        char arrow;              // For KEY_ARROW (U/D/L/R)
+        int function_num;        // For KEY_FUNCTION (1-12)
+        char special;            // For KEY_SPECIAL and KEY_NAVIGATION
+    } data;
+    utf_8_char_t c;  // Raw bytes
+} KeyInfo;
+
+
+struct keyBind_t {
+  KeyInfo *key_sequence;
+  Lisp command;
+};
+
 /**
  * \struct editorConfig
  * \brief Containing our editor state.
@@ -32,9 +93,23 @@ struct editorConfig {
   erow *row;              /**< Store all the rows printed */
   int dirty;
   char *filename;
+  enum editorStatus_e state;
   char status_msg[80];
   time_t status_msg_time;
   struct termios orig_termios; /**< Terminal communication interface */
+
+  struct const_t constantes;
+  int quit_times_buffer;
+
+  FILE *fd_init_file;
+  Lisp env;
+  LispContext ctx;     /** Lisp context */
+  Lisp ctx_data;       /** Lisp data context */
+  LispError ctx_error; /** Lisp ctx error */
+
+  struct keyBind_t* key_binds;
+  int number_of_keybinds;
+
 };
 
 /**
@@ -43,8 +118,11 @@ struct editorConfig {
  * */
 
 struct abuf {
-  char *b; /**< Text that will be printed */
+  unsigned char *b; /**< Text that will be printed */
   int len; /**< Length of the text */
 };
 
+extern struct editorConfig E;
+
+
 #endif

include/define.h

@@ -8,24 +8,13 @@
 #define HIDE_CURSOR "\x1b[?25l"
 #define SHOW_CURSOR "\x1b[?25h"
 #define ERASE_END_LINE "\x1b[K"
+#define TAB "\x09"
+#define SPACE "\x20"
+
 
-enum editorKey {
-  BACKSPACE = 127,
-  ARROW_LEFT = 1000,
-  ARROW_RIGHT,
-  ARROW_UP,
-  ARROW_DOWN,
-  DEL_KEY,
-  BEG_LINE,
-  END_LINE,
-  PAGE_UP,
-  PAGE_DOWN,
-};
 
 #define ABUF_INIT {NULL, 0}
 
-#define BELUGA_VERSION "1.0"
-#define TAB_LENGTH 4
-#define QUIT_TIMES 1
+#define BELUGA_VERSION "1.1"
 
 #endif // DEFINE_H_

include/editor_op.h

@@ -2,10 +2,10 @@
 #define EDITOR_OP_H_
 
 #include "data.h"
-void editorInsertChar(struct editorConfig *E, int c);
+void editorInsertChar(utf_8_char_t *c);
 
-void editorInsertNewLine(struct editorConfig *E);
+void editorInsertNewLine(void);
 
-void editorDelChar(struct editorConfig *E);
+void editorDelChar();
 
 #endif // EDITOR_OP_H_

include/file_io.h

@@ -8,10 +8,15 @@
 #include <stdlib.h>
 #include <sys/types.h>
 
-char *editorRowsToString(struct editorConfig *E, int *buffer_len);
+char *editorRowsToString(int *buffer_len);
 
-void editorOpen(struct editorConfig *E, char *filename);
 
-void editorSave(struct editorConfig *E);
+void editorCloseFile(void);
+
+void editorOpen(char *filename);
+
+void editorSave();
+
+void editorFind();
 
 #endif // FILE_IO_H_

include/init.h

@@ -1,6 +1,7 @@
 #ifndef INIT_H_
 #define INIT_H_
 
+#include "builtins.h"
 #include "data.h"
 #include "terminal.h"
 #include <stdio.h>
@@ -10,6 +11,8 @@
  * \brief Job's function is to initialize all the fields of editorConfig.
  * */
 
-void initEditor(struct editorConfig *E);
+void initBuiltins();
+
+void initEditor();
 
 #endif // INIT_H_

include/input.h

@@ -5,6 +5,7 @@
 #include "define.h"
 #include "output.h"
 #include "terminal.h"
+#include "builtins.h"
 #include <unistd.h>
 
 // KEYS keycode
@@ -19,15 +20,19 @@
 // END \x1b[4~ || <esc>[8~ || <esc>[F  || <esc>OF
 // DELETE \x1b[3~
 
-char *editorPrompt(struct editorConfig *E, char *prompt);
+char *editorPrompt(char *prompt, char * PlaceHolder, char bPathMode);
 
-void editorMoveCursor(struct editorConfig *E, int key);
+char *key_to_string(int key);
+
+void editorMoveCursor(KeyInfo * key);
+
+int executeKeyBind(KeyInfo *key_sequence);
 
 /**
  * \fn void editorProcessKeypress()
  * \brief Get the last key input and do the proper action.
  */
 
-void editorProcessKeypress(struct editorConfig *E);
+void editorProcessKeypress();
 
 #endif // INPUT_H_

include/output.h

@@ -13,16 +13,16 @@
  * \brief Draws left rows of the editor.
  */
 
-void editorDrawRows(struct editorConfig *E, struct abuf *ab);
+void editorDrawRows(struct abuf *ab);
 
-void editorRefreshScreen(struct editorConfig *E);
+void editorRefreshScreen();
 
-void editorScroll(struct editorConfig *E);
+void editorScroll();
 
-void editorDrawStatusBar(struct editorConfig *E, struct abuf *ab);
+void editorDrawStatusBar(struct abuf *ab);
 
-void editorDrawMessageBar(struct editorConfig *E, struct abuf *ab);
+void editorDrawMessageBar(struct abuf *ab);
 
-void editorSetStatusMessage(struct editorConfig *E, const char *fmt, ...);
+void editorSetStatusMessage(const char *fmt, ...);
 
 #endif // OUTPUT_H_

include/row_op.h

@@ -10,19 +10,20 @@
 
 int editorRowCxToRx(erow *row, int cursor_x);
 
+int editorRowRxToCx(erow *row, int rx);
+
 void editorUpdateRow(erow *row);
 
-void editorInsertRow(struct editorConfig *E, int at, char *s, size_t len);
+void editorInsertRow(int at, char *s, size_t len);
 
 void editorFreeRow(erow *row);
 
-void editorDelRow(struct editorConfig *E, int at);
+void editorDelRow(int at);
 
-void editorRowInsertChar(struct editorConfig *E, erow *row, int at, int c);
+void editorRowInsertChar(erow *row, int at, utf_8_char_t c);
 
-void editorRowAppendString(struct editorConfig *E, erow *row, char *s,
-                           size_t len);
+void editorRowAppendString(erow *row, char *s, size_t len);
 
-void editorRowDelchar(struct editorConfig *E, erow *row, int at);
+void editorRowDelchar(erow *row, int at);
 
 #endif // ROW_OP_H_

include/terminal.h

@@ -21,14 +21,16 @@
 
 void die(const char *s);
 
-void disableRawMode(struct editorConfig *E);
+void disableRawMode();
 
-void enableRawMode(struct editorConfig *E);
+void enableRawMode();
 
-int editorReadKey();
+KeyInfo * editorReadKey();
 
 int getCursorPosition(int *rows, int *cols);
 
+KeyInfo *stringToCodepoint(const char *string);
+
 int getWindowSize(int *rows, int *cols);
 
 #endif

install.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+
+echo "--- Welcome to Beluga installer ---"
+read -p "Do you want to start the installation ? (Y/n)" confirm && [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]] || exit 1
+
+# Check dependencies
+
+if ! command -v "meson" &>/dev/null; then
+    echo "❌ Error: meson not found. Please install it first."
+    exit 1
+fi
+
+
+# Create config files
+
+echo "Create config files ..."
+mkdir -pv ~/.beluga/
+cp -rv ./assets/ ~/.beluga/
+mkdir -pv ~/.beluga/config/
+mkdir -pv ~/.beluga/packages/
+
+read -p "Do you want to replace your config file or keep it (init.lisp.bak) / (init.lisp.new) ? (Y/n)" confirm
+if [[ "$confirm" =~ ^[Yy]$ ]]; then
+    mv ~/.beluga/config/init.lisp  ~/.beluga/config/init.lisp.bak
+    cp -rv ./config/init.lisp ~/.beluga/config/
+else
+    cp -rv ./config/init.lisp ~/.beluga/config/init.lisp.new
+fi
+
+
+# Compile the project
+
+echo "Start compilation ..."
+meson setup build/
+meson compile -C build/
+
+# Add to path
+echo "Adding beluga to the path"
+sudo cp -f ./build/beluga /usr/local/bin/
+
+echo "Installation finish"
+echo "Check ~/.beluga/config/init.lisp for customization"

main.c

@@ -5,6 +5,11 @@
  * interactions. \version 0.1 \date 21 septembre 2024
  */
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
 #define _DEFAULT_SOURCE
 #define _BSD_SOURCE
 #define _GNU_SOURCE
@@ -16,21 +21,39 @@
 #include "include/output.h"
 #include "include/terminal.h"
 
+#include <locale.h>
+#include <wchar.h>
+
+struct editorConfig E;
+
 int main(int argc, char *argv[]) {
 
-  struct editorConfig E;
+  char * splash_screen = (char *) calloc(256, sizeof(char));
 
-  enableRawMode(&E);
-  initEditor(&E);
+  // Set support for utf-8
+  setlocale(LC_ALL, "");
+
+  // INIT
+  
+  enableRawMode();
+  initEditor();
   if (argc >= 2) {
-    editorOpen(&E, argv[1]);
+    E.state = READ_AND_WRITE;
+    editorOpen(argv[1]);
+  } else {
+    strcat(splash_screen, getenv("HOME"));
+    strcat(splash_screen, "/.beluga/assets/beluga.txt");
+    fprintf(stderr, "%s\n", splash_screen);
+    editorOpen(splash_screen);
   }
+  free(splash_screen);
+
+  editorSetStatusMessage("HELP: Ctrl-S = save | Ctrl-Q = quit");
 
-  editorSetStatusMessage(&E, "HELP: Ctrl-S = save | Ctrl-Q = quit");
 
   while (1) {
-    editorRefreshScreen(&E);
-    editorProcessKeypress(&E);
+    editorRefreshScreen();
+    editorProcessKeypress();
   }
   return 0;
 }

meson.build

@@ -0,0 +1,29 @@
+project('beluga', 'c',
+  version : '1.1',
+  default_options : [
+    'c_std=none',
+  ]
+)
+
+cc = meson.get_compiler('c')
+m = cc.find_library('m', required: false)            
+
+# Source files
+src_files = files(
+  'main.c',
+  'src/append_buffer.c',
+  'src/editor_op.c',
+  'src/file_io.c',
+  'src/init.c',
+  'src/input.c',
+  'src/output.c',
+  'src/row_op.c',
+  'src/terminal.c',
+  'src/builtins.c',
+)
+
+# Executable
+executable('beluga',
+  src_files,
+  dependencies: [m]
+)

src/append_buffer.c

@@ -1,7 +1,9 @@
 #include "../include/append_buffer.h"
 
-void abAppend(struct abuf *ab, const char *s, int len) {
-  char *new = realloc(ab->b, ab->len + len);
+extern struct editorConfig E;
+
+void abAppend(struct abuf *ab, const unsigned char *s, int len) {
+  unsigned char *new = realloc(ab->b, ab->len + len);
 
   if (new == NULL) {
     return;

src/builtins.c

@@ -0,0 +1,195 @@
+#include "../include/builtins.h"
+#include "../include/define.h"
+#include "../include/input.h"
+#include "../include/file_io.h"
+#include "../include/editor_op.h"
+#include "../include/row_op.h"
+#include "../include/data.h"
+#include "../include/terminal.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+utf_8_char_t make_utf8_char(const char *bytes, int len) {
+  utf_8_char_t ch;
+  ch.len = len;
+  memcpy(ch.c, bytes, len);
+  return ch;
+}
+
+Lisp mapKey(Lisp args, LispError *e, LispContext ctx) {
+  const char *key_string = lisp_string(lisp_car(args));
+  KeyInfo *key = stringToCodepoint(key_string);
+  args = lisp_cdr(args);
+  // second argument
+  Lisp func = lisp_car(args);
+
+  E.key_binds =
+      (struct keyBind_t *)realloc(E.key_binds, ++E.number_of_keybinds * sizeof(struct keyBind_t));
+  E.key_binds[E.number_of_keybinds - 1].key_sequence = (KeyInfo *) malloc(sizeof(KeyInfo));
+
+  memcpy(E.key_binds[E.number_of_keybinds - 1].key_sequence, key, sizeof(KeyInfo));
+
+  E.key_binds[E.number_of_keybinds - 1].command = func;
+
+  return lisp_null();
+}
+
+Lisp moveCursor(Lisp args, LispError *e, LispContext ctx) {
+  const char *direction = lisp_string(lisp_car(args));
+  KeyInfo key;
+  key.type = KEY_ARROW; 
+  switch (direction[0]) {
+  case 'u':
+    key.data.arrow = 'A';
+    break;
+  case 'd':
+    key.data.arrow = 'B';
+    break;
+  case 'r':
+    key.data.arrow = 'C';
+    break;
+  case 'l':
+    key.data.arrow = 'D';
+    break;
+  }
+  editorMoveCursor(&key);
+
+
+  return lisp_null();
+}
+
+Lisp editorQuit(Lisp args, LispError* e, LispContext ctx) {
+  fprintf(stderr, "quit\n");
+  if (E.dirty && E.quit_times_buffer > 0) {
+    editorSetStatusMessage("WARNING! Changes hasn't been saved. Press Ctrl-Q "
+                           "another time to quit.");
+    --E.quit_times_buffer;
+    return lisp_null();
+  }
+  write(STDOUT_FILENO, "\x1b[2J", 4);
+  write(STDOUT_FILENO, CURSOR_TOP_LEFT, 3);
+  disableRawMode();
+  exit(0);
+
+  return lisp_null();
+
+  
+}
+
+
+Lisp l_editorSave(Lisp args, LispError* e, LispContext ctx) {
+
+  editorSave();
+  
+  return lisp_null();
+
+  
+}
+
+Lisp l_editorInsertNewLine(Lisp args, LispError* e, LispContext ctx) {
+
+  // editorInsertNewLine();
+  
+  return lisp_null();
+
+  
+}
+
+Lisp moveCursorBeginLine(Lisp args, LispError *e, LispContext ctx) {
+  E.cursor_x = 0;
+  return lisp_null();
+}
+
+Lisp moveCursorEndLine(Lisp args, LispError* e, LispContext ctx) {
+  if (E.cursor_y < E.numrows) {
+    E.cursor_x = E.row[E.cursor_y].size;
+  }
+  return lisp_null();
+}
+
+
+Lisp deletePreviousChar(Lisp args, LispError* e, LispContext ctx) {
+  editorDelChar();
+  return lisp_null();
+}
+
+Lisp editorMoveCursorPageUp(Lisp args, LispError* e, LispContext ctx) {
+  E.cursor_y = E.row_offset;
+  int times = E.screenrows;
+  KeyInfo key;
+  key.type = KEY_ARROW;
+  key.data.arrow = 'D';
+  while (--times) {
+    editorMoveCursor(&key);
+  }
+  return lisp_null();
+}
+
+Lisp editorMoveCursorPageDown(Lisp args, LispError* e, LispContext ctx) {
+  E.cursor_y = E.row_offset + E.screenrows - 1;
+  if (E.cursor_y > E.numrows) {
+    E.cursor_y = E.numrows;
+  }
+  int times = E.screenrows;
+  KeyInfo key;
+  key.type = KEY_ARROW;
+  key.data.arrow = 'D';
+  while (--times) {
+    editorMoveCursor(&key);
+  }
+
+  return lisp_null();
+}
+
+Lisp editorOpenFile(Lisp args, LispError *e, LispContext ctx) {
+  char *filename = editorPrompt("Open : %s", getenv("PWD"), 1);
+  if (filename)
+    editorOpen(filename);
+
+  return lisp_null();
+}
+
+
+Lisp editorPrintC(Lisp args, LispError *e, LispContext ctx) {
+  char *c = lisp_string(lisp_car(args));
+  utf_8_char_t ch = make_utf8_char(c, 1);
+  editorInsertChar(&ch);
+  return lisp_null();
+}
+
+Lisp addPackage(Lisp args, LispError *e, LispContext ctx) {
+  const char *package_name = lisp_string(lisp_car(args));
+  char *package_dir = (char *) calloc(256, sizeof(char));
+  FILE *fd_package = NULL;
+  strcat(package_dir, getenv("HOME"));
+  strcat(package_dir, "/.beluga/packages/");
+  strcat(package_dir, package_name);
+  strcat(package_dir, "/init.lisp");
+  fd_package = fopen(package_dir, "r");
+  lisp_eval(lisp_read_file(fd_package, &E.ctx_error, E.ctx), &E.ctx_error,
+            E.ctx);
+  fclose(fd_package);
+  free(package_dir);
+  
+  return lisp_null();
+  
+}
+
+Lisp editorDelRow_L(Lisp args, LispError *e, LispContext ctx) {
+  editorDelRow(E.cursor_y);
+  return lisp_null();
+}
+
+Lisp editorFind_L(Lisp args, LispError *e, LispContext ctx) {
+	editorFind();
+	return lisp_null();
+}
+
+Lisp editorReadChar_L(Lisp args, LispError *e, LispContext ctx) {
+  // fprintf(stderr, "char read : %c\n", E.row[E.cursor_y].render[E.cursor_x]);
+  //  return lisp_make_char(E.row[E.cursor_y].render[E.cursor_x]);
+  return lisp_null();
+}
+

src/editor_op.c

@@ -1,44 +1,94 @@
 #include "../include/editor_op.h"
 #include "../include/row_op.h"
+#include "include/data.h"
+#include <stdio.h>
 
-void editorInsertChar(struct editorConfig *E, int c) {
-  if (E->cursor_y == E->numrows) {
-    editorInsertRow(E, E->numrows, "", 0);
+
+extern struct editorConfig E;
+
+void editorInsertChar(utf_8_char_t *c) {
+  if (E.state == READ_ONLY) return;
+  fprintf(stderr, "Insert char %s %d\n", c->c, c->len);
+  // If cursor is past end of file, add empty rows
+  if (E.cursor_y == E.numrows) {
+    editorInsertRow(E.numrows, "", 0);
   }
-  editorRowInsertChar(E, &E->row[E->cursor_y], E->cursor_x, c);
-  E->cursor_x++;
+  
+  // Insert character at cursor position
+  editorRowInsertChar(&E.row[E.cursor_y], E.cursor_x, *c);
+  E.cursor_x++;
 }
 
-void editorInsertNewLine(struct editorConfig *E) {
-  erow *row;
-  if (!E->cursor_x) {
-    editorInsertRow(E, E->cursor_y, "", 0);
+void editorInsertNewline(void) {
+  if (E.state == READ_ONLY) return;
+  
+  if (E.cursor_x == 0) {
+    // Insert blank line before current line
+    editorInsertRow(E.cursor_y, "", 0);
   } else {
-    row = &E->row[E->cursor_y];
-    editorInsertRow(E, E->cursor_y + 1, &row->chars[E->cursor_x],
-                    row->size - E->cursor_x);
-    row = &E->row[E->cursor_y];
-    row->size = E->cursor_x;
-    row->chars[row->size] = '\0';
+    // Split current line at cursor
+    erow *row = &E.row[E.cursor_y];
+    
+    // Calculate byte length of remaining part
+    int remaining_chars = row->size - E.cursor_x;
+    
+    // Allocate buffer for remaining characters
+    char *buf = malloc(remaining_chars * 4); // Max 4 bytes per UTF-8 char
+    int buf_len = 0;
+    
+    // Convert utf_8_char_t to bytes
+    for (int i = E.cursor_x; i < row->size; i++) {
+      for (int j = 0; j < row->chars[i].len; j++) {
+        buf[buf_len++] = row->chars[i].c[j];
+      }
+    }
+    
+    // Insert new row with remaining text
+    editorInsertRow(E.cursor_y + 1, buf, buf_len);
+    free(buf);
+    
+    // Truncate current row at cursor
+    row = &E.row[E.cursor_y]; // Refresh pointer after realloc
+    row->size = E.cursor_x;
     editorUpdateRow(row);
   }
-  ++E->cursor_y;
-  E->cursor_x = 0;
+  
+  E.cursor_y++;
+  E.cursor_x = 0;
 }
 
-void editorDelChar(struct editorConfig *E) {
-  erow *row;
-  if (E->cursor_y == E->numrows || !(E->cursor_x || E->cursor_y)) {
-    return;
-  }
-  row = &E->row[E->cursor_y];
-  if (E->cursor_x > 0) {
-    editorRowDelchar(E, row, E->cursor_x - 1);
-    --E->cursor_x;
+void editorRowAppendRow(erow *dest, erow *src) {
+  // Allocate space for combined rows
+  utf_8_char_t *new_chars = realloc(dest->chars, 
+                                     sizeof(utf_8_char_t) * (dest->size + src->size));
+  if (!new_chars) return;
+  
+  dest->chars = new_chars;
+  
+  // Copy source row characters
+  memcpy(&dest->chars[dest->size], src->chars, sizeof(utf_8_char_t) * src->size);
+  dest->size += src->size;
+  
+  editorUpdateRow(dest);
+  ++E.dirty;
+}
+
+void editorDelChar(void) {
+  if (E.state == READ_ONLY) return;
+  if (E.cursor_y == E.numrows) return;
+  if (E.cursor_x == 0 && E.cursor_y == 0) return;
+  
+  erow *row = &E.row[E.cursor_y];
+  
+  if (E.cursor_x > 0) {
+    // Delete character before cursor
+    editorRowDelchar(row, E.cursor_x - 1);
+    E.cursor_x--;
   } else {
-    E->cursor_x = E->row[E->cursor_y - 1].size;
-    editorRowAppendString(E, &E->row[E->cursor_y - 1], row->chars, row->size);
-    editorDelRow(E, E->cursor_y);
-    --E->cursor_y;
+    // At beginning of line - join with previous line
+    E.cursor_x = E.row[E.cursor_y - 1].size;
+    editorRowAppendRow(&E.row[E.cursor_y - 1], row);
+    editorDelRow(E.cursor_y);
+    E.cursor_y--;
   }
 }

src/file_io.c

@@ -7,80 +7,211 @@
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
+#include <errno.h>
 
-char *editorRowsToString(struct editorConfig *E, int *buffer_len) {
-  int tot_len = 0;
-  int j;
-  char *buf;
-  char *p;
+extern char *strdup(const char *);
+extern ssize_t getline(char **restrict lineptr, size_t *restrict n,
+                       FILE *restrict stream);
+extern int ftruncate(int fd, off_t length);
+extern struct editorConfig E;
 
-  for (j = 0; j < E->numrows; ++j) {
-    tot_len += E->row[j].size + 1;
-  }
-  *buffer_len = tot_len;
-  buf = malloc(tot_len);
-  p = buf;
-  for (j = 0; j < E->numrows; ++j) {
-    memcpy(p, E->row[j].chars, E->row[j].size);
-    p += E->row[j].size;
-    *p = '\n';
-    p++;
-  }
+// Convert utf_8_char_t array to byte string
+char *editorRowsToString(int *buffer_len) {
+    int tot_len = 0;
+    int j, i;
+    char *buf;
+    char *p;
 
-  return buf;
+    // Calculate total byte length (not character count)
+    for (j = 0; j < E.numrows; ++j) {
+        // Count actual bytes in each character
+        for (i = 0; i < E.row[j].size; i++) {
+            tot_len += E.row[j].chars[i].len;
+        }
+        tot_len++; // For newline
+    }
+    
+    *buffer_len = tot_len;
+    buf = malloc(tot_len);
+    if (!buf) return NULL;
+    
+    p = buf;
+    for (j = 0; j < E.numrows; ++j) {
+        // Copy each character's bytes
+        for (i = 0; i < E.row[j].size; i++) {
+            for (int k = 0; k < E.row[j].chars[i].len; k++) {
+                *p++ = E.row[j].chars[i].c[k];
+            }
+        }
+        *p++ = '\n';
+    }
+
+    return buf;
 }
 
-void editorOpen(struct editorConfig *E, char *filename) {
-  FILE *fp;
-
-  free(E->filename);
-  E->filename = strdup(filename);
-
-  fp = fopen(filename, "r");
-  if (!fp)
-    die("fopen");
-
-  char *line = NULL;
-  size_t line_cap = 0;
-  ssize_t line_len;
-
-  while ((line_len = getline(&line, &line_cap, fp)) != -1) {
-    while (line_len > 0 &&
-           (line[line_len - 1] == '\n' || line[line_len - 1] == '\r')) {
-      --line_len;
+void editorCloseFile(void) {
+    // Free all rows
+    for (int i = 0; i < E.numrows; i++) {
+        editorFreeRow(&E.row[i]);
     }
-    editorInsertRow(E, E->numrows, line, line_len);
-  }
-  free(line);
-  fclose(fp);
-  E->dirty = 0;
+    
+    E.cursor_x = 0;
+    E.cursor_y = 0;
+    E.rx = 0;
+    E.row_offset = 0;
+    E.col_offset = 0;
+    E.numrows = 0;
+    free(E.row);
+    E.row = NULL;
+    E.dirty = 0;
+    free(E.filename);
+    E.filename = NULL;
+    E.status_msg[0] = '\0';
+    E.status_msg_time = 0;
 }
 
-void editorSave(struct editorConfig *E) {
-  int len;
-  char *buf;
-  int fd;
-  if (E->filename == NULL) {
-    E->filename = editorPrompt(E, "Save as: %s (ESC to cancel)");
-    if (E->filename == NULL) {
-      editorSetStatusMessage(E, "Save aborted");
-      return;
+void editorOpen(char *filename) {
+    FILE *fp;
+
+    // Test if a file is already open
+    if (E.filename != NULL) {
+        editorCloseFile();
     }
-  }
-  buf = editorRowsToString(E, &len);
-  fd = open(E->filename, O_RDWR | O_CREAT, 0644);
-  if (fd != -1) {
-    if (ftruncate(fd, len) != -1) {
-      if (write(fd, buf, len) == len) {
-        close(fd);
-        free(buf);
-        E->dirty = 0;
-        editorSetStatusMessage(E, "%d bytes written to disk", len);
+    E.state = READ_AND_WRITE;
+
+    E.filename = strdup(filename);
+
+    fp = fopen(filename, "r");
+    if (!fp) {
+        // File doesn't exist - that's okay, we'll create it on save
+        E.dirty = 0;
         return;
-      }
     }
-    close(fd);
-  }
-  free(buf);
-  editorSetStatusMessage(E, "Can't save! I/O error: %s", strerror(errno));
+
+    char *line = NULL;
+    size_t line_cap = 0;
+    ssize_t line_len;
+
+    while ((line_len = getline(&line, &line_cap, fp)) != -1) {
+        // Strip newline characters
+        while (line_len > 0 &&
+               (line[line_len - 1] == '\n' || line[line_len - 1] == '\r')) {
+            --line_len;
+        }
+        // editorInsertRow will convert bytes to utf_8_char_t
+        editorInsertRow(E.numrows, line, line_len);
+    }
+    free(line);
+    fclose(fp);
+    E.dirty = 0;
+}
+
+void editorSave() {
+    int len;
+    char *buf;
+    int fd;
+    
+    if (E.filename == NULL) {
+        E.filename = editorPrompt("Save as: %s (ESC to cancel)", "", 1);
+        if (E.filename == NULL) {
+            editorSetStatusMessage("Save aborted");
+            return;
+        }
+    }
+    
+    buf = editorRowsToString(&len);
+    if (!buf) {
+        editorSetStatusMessage("Can't save! Memory error");
+        return;
+    }
+    
+    fd = open(E.filename, O_RDWR | O_CREAT | O_TRUNC, 0644);
+    if (fd != -1) {
+        if (write(fd, buf, len) == len) {
+            close(fd);
+            free(buf);
+            E.dirty = 0;
+            editorSetStatusMessage("%d bytes written to disk", len);
+            return;
+        }
+        close(fd);
+    }
+    
+    free(buf);
+    editorSetStatusMessage("Can't save! I/O error: %s", strerror(errno));
+}
+
+// Helper to convert utf_8_char_t array to byte string for searching
+static char *row_to_string(erow *row) {
+    // Calculate byte length
+    int byte_len = 0;
+    for (int i = 0; i < row->rsize; i++) {
+        byte_len += row->render[i].len;
+    }
+    
+    char *str = malloc(byte_len + 1);
+    if (!str) return NULL;
+    
+    // Convert to bytes
+    int pos = 0;
+    for (int i = 0; i < row->rsize; i++) {
+        for (int j = 0; j < row->render[i].len; j++) {
+            str[pos++] = row->render[i].c[j];
+        }
+    }
+    str[pos] = '\0';
+    
+    return str;
+}
+
+void editorFind() {
+    char *query = editorPrompt("Search: %s (ESC to cancel)", "", 0);
+    if (query == NULL) return;
+    
+    int saved_cursor_x = E.cursor_x;
+    int saved_cursor_y = E.cursor_y;
+    int saved_row_offset = E.row_offset;
+    int saved_col_offset = E.col_offset;
+    
+    // Search from current position forward
+    for (int i = E.cursor_y; i < E.numrows; i++) {
+        erow *row = &E.row[i];
+        
+        // Convert row to byte string for searching
+        char *render_str = row_to_string(row);
+        if (!render_str) continue;
+        
+        char *match = strstr(render_str, query);
+        if (match) {
+            E.cursor_y = i;
+            
+            // Find the character index from byte position
+            int byte_pos = match - render_str;
+            int char_idx = 0;
+            int current_byte = 0;
+            
+            for (char_idx = 0; char_idx < row->rsize; char_idx++) {
+                if (current_byte >= byte_pos) break;
+                current_byte += row->render[char_idx].len;
+            }
+            
+            E.cursor_x = editorRowRxToCx(row, char_idx);
+            E.row_offset = E.numrows; // Force scroll
+            
+            free(render_str);
+            free(query);
+            return;
+        }
+        
+        free(render_str);
+    }
+    
+    // Not found - restore cursor position
+    E.cursor_x = saved_cursor_x;
+    E.cursor_y = saved_cursor_y;
+    E.row_offset = saved_row_offset;
+    E.col_offset = saved_col_offset;
+    
+    editorSetStatusMessage("Not found: %s", query);
+    free(query);
 }

src/init.c

@@ -1,19 +1,91 @@
 #include "../include/init.h"
+#include "../include/data.h"
+#include "../include/terminal.h"
+#include "../include/builtins.h"
+#include <stdio.h>
 
-void initEditor(struct editorConfig *E) {
-  E->cursor_x = 0;
-  E->cursor_y = 0;
-  E->rx = 0;
-  E->row_offset = 0;
-  E->col_offset = 0;
-  E->numrows = 0;
-  E->row = NULL;
-  E->dirty = 0;
-  E->filename = NULL;
-  E->status_msg[0] = '\0';
-  E->status_msg_time = 0;
-  if (getWindowSize(&E->screenrows, &E->screencols) == -1) {
+#define LISP_IMPLEMENTATION
+#include "../include/lisp.h"
+#include "../include/lisp_lib.h"
+
+extern struct editorConfig;
+
+
+void registerBuiltin(char *key_sequence, LispCFunc f) {
+  lisp_env_define(E.ctx.p->env, lisp_make_symbol(key_sequence, E.ctx),
+                  lisp_make_func(f), E.ctx);
+  
+}
+
+void initBuiltins() {
+  // move cursor
+  registerBuiltin("MOVE-CURSOR", moveCursor);
+  registerBuiltin("MAP-KEY", mapKey);
+  registerBuiltin("EDITOR-QUIT", editorQuit);
+  registerBuiltin("EDITOR-SAVE", l_editorSave);
+  registerBuiltin("EDITOR-INSERT-NEW-LINE", l_editorInsertNewLine);
+  registerBuiltin("MOVE-CURSOR-BEG-LINE", moveCursorBeginLine);
+  registerBuiltin("MOVE-CURSOR-END-LINE", moveCursorEndLine);
+  registerBuiltin("EDITOR-DELETE-PREVIOUS-CHAR", deletePreviousChar);
+  registerBuiltin("MOVE-CURSOR-PAGE-UP", editorMoveCursorPageUp);
+  registerBuiltin("MOVE-CURSOR-PAGE-DOWN", editorMoveCursorPageDown);
+  registerBuiltin("EDITOR-OPEN-FILE", editorOpenFile);
+  registerBuiltin("EDITOR-INSERT-CHAR", editorPrintC);
+  registerBuiltin("ADD-PACKAGE", addPackage);
+  registerBuiltin("EDITOR-DEL-ROW", editorDelRow_L);
+	registerBuiltin("EDITOR-FIND", editorFind_L);
+	registerBuiltin("EDITOR-READ-CHAR", editorReadChar_L);
+}
+
+void initEditor() {
+  char * init_file_path = (char *) calloc(256, sizeof(char));
+  E.cursor_x = 0;
+  E.cursor_y = 0;
+  E.rx = 0;
+  E.row_offset = 0;
+  E.col_offset = 0;
+  E.numrows = 0;
+  E.row = NULL;
+  E.dirty = 0;
+  E.filename = NULL;
+  E.state = READ_ONLY;
+  E.status_msg[0] = '\0';
+  E.status_msg_time = 0;
+  if (getWindowSize(&E.screenrows, &E.screencols) == -1) {
     die("getWindowSize");
   }
-  E->screenrows -= 2;
+  E.screenrows -= 2;
+
+  E.number_of_keybinds = 0;
+
+  strcat(init_file_path, getenv("HOME"));
+  strcat(init_file_path, "/.beluga/config/init.lisp");
+  printf("%s\n", init_file_path);
+  E.fd_init_file = fopen(init_file_path, "r");
+  E.ctx = lisp_init();
+  E.env = lisp_env(E.ctx);
+  lisp_lib_load(E.ctx);
+  // Init builtins lisp functions
+  initBuiltins();
+
+  // Read config file
+  E.ctx_data = lisp_read_file(E.fd_init_file, &E.ctx_error, E.ctx);
+  free(init_file_path);
+  if (E.ctx_error != LISP_ERROR_NONE) {
+    die("init failed");
+  }
+  lisp_eval(E.ctx_data, &E.ctx_error, E.ctx);
+  
+  // To modify
+
+  E.constantes.TAB_LENGTH =
+      (int)lisp_eval(lisp_read("TAB-LENGTH", &E.ctx_error, E.ctx), &E.ctx_error,
+                     E.ctx)
+          .val.int_val;
+  E.constantes.QUIT_TIMES =
+      (int)lisp_eval(lisp_read("QUIT-TIMES", &E.ctx_error, E.ctx), &E.ctx_error,
+                     E.ctx)
+          .val.int_val;
+  fprintf(stderr, "Tab %d\n", E.constantes.QUIT_TIMES);
+  E.quit_times_buffer = E.constantes.QUIT_TIMES;
 }

src/input.c

@@ -1,168 +1,248 @@
 #include "../include/input.h"
+#include "../include/define.h"
 #include "../include/editor_op.h"
-#include "../include/file_io.h"
 #include "../include/output.h"
+#include "include/data.h"
 #include <ctype.h>
+#include <dirent.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
+extern struct editorConfig E;
+
+char *file_completion(const char *path) {
+  DIR *dir;
+  struct dirent *entry;
+  char directory[128];
+  char predict[128];
+  int predict_len = 0;
+
+  if (path[strlen(path) - 1] == '/') {
+    return strdup(path);
+  }
+
+  // Find dir name
+  char *last_slash = strrchr(path, '/');
+  if (last_slash) {
+    size_t dir_len = last_slash - path + 1;
+    strncpy(directory, path, dir_len);
+    predict_len = strlen(path) - dir_len;
+    strncpy(predict, last_slash + 1, predict_len);
+    directory[dir_len] = '\0';
+    predict[predict_len] = '\0';
+  } else {
+    return NULL;
+  }
+
+  dir = opendir(directory);
+  if (!dir)
+    return NULL;
+
+  while ((entry = readdir(dir)) != NULL) {
+    if (strncmp(entry->d_name, predict, predict_len) == 0) {
+      static char full_path[128];
+      snprintf(full_path, sizeof(full_path), "%s%s", directory, entry->d_name);
+
+      struct stat st;
+      if (stat(full_path, &st) == 0 && S_ISDIR(st.st_mode)) {
+        strcat(full_path, "/");
+      }
+      closedir(dir);
+      return strdup(full_path);
+    }
+  }
+
+  closedir(dir);
+  return NULL;
+}
+
 /**
- * \fn char * editorPrompt(struct editorConfig *E, char *prompt)
+ * \fn char * editorPrompt(struct editorConfig *E, char *prompt, char bPathMode)
  * \brief Return user input in a prompt when enter is hit. */
 
-char *editorPrompt(struct editorConfig *E, char *prompt) {
+char *editorPrompt(char *prompt, char *placeHolder, char bPathMode) {
   size_t buf_size = 128;
   char *buf = malloc(buf_size);
   size_t buf_len = 0;
-  int c = 0;
   buf[0] = '\0';
+  strcpy(buf, placeHolder);
+  buf_len = strlen(placeHolder);
 
   while (1) {
-    editorSetStatusMessage(E, prompt, buf);
-    editorRefreshScreen(E);
-    c = editorReadKey();
-    if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
+    editorSetStatusMessage(prompt, buf);
+    editorRefreshScreen();
+    
+    KeyInfo *key = editorReadKey();
+    
+    // Handle backspace/delete
+    if (key->type == KEY_SPECIAL && (key->data.special == 127 || key->data.special == 8)) {
       if (buf_len != 0) {
         buf[--buf_len] = '\0';
       }
-    } else if (c == ESCAPE) {
-      fprintf(stderr, "escape");
-      editorSetStatusMessage(E, "");
+    }
+    // Handle Ctrl+H (backspace)
+    else if (key->type == KEY_CTRL && key->data.ctrl_char == 'H') {
+      if (buf_len != 0) {
+        buf[--buf_len] = '\0';
+      }
+    }
+    // Handle ESC
+    else if (key->type == KEY_SPECIAL && key->data.special == 27) {
+      editorSetStatusMessage("");
       free(buf);
       return NULL;
-    } else if (c == '\r') {
+    }
+    // Handle Enter
+    else if (key->type == KEY_SPECIAL && (key->data.special == 13 || key->data.special == 10)) {
       if (buf_len != 0) {
-        editorSetStatusMessage(E, "");
+        editorSetStatusMessage("");
         return buf;
       }
-    } else if (!iscntrl(c) && c < 128) {
+    }
+    // Handle Tab for path completion
+    else if (bPathMode && key->type == KEY_SPECIAL && key->data.special == 9) {
+      char path[128];
+      char *pwd;
+      if (buf[0] != '/') {
+        pwd = getenv("PWD");
+        snprintf(path, sizeof(path), "%s/%s", pwd, buf);
+      } else {
+        strcpy(path, buf);
+      }
+      
+      char *completion = file_completion(path);
+      if (completion) {
+        memset(buf, 0, buf_size);
+        strcpy(buf, completion);
+        buf_len = strlen(buf);
+        free(completion);
+      }
+    }
+    // Handle regular characters (ASCII only for prompts)
+    else if (key->type == KEY_CHAR && key->data.codepoint < 128) {
       if (buf_len == buf_size - 1) {
         buf_size *= 2;
         buf = realloc(buf, buf_size);
       }
-      buf[buf_len++] = c;
+      buf[buf_len++] = (char)key->data.codepoint;
       buf[buf_len] = '\0';
     }
   }
 }
 
-void editorMoveCursor(struct editorConfig *E, int key) {
-  erow *row = (E->cursor_y >= E->numrows) ? NULL : &E->row[E->cursor_y];
+void editorMoveCursor(KeyInfo *key) {
+  if (key->type != KEY_ARROW) return;
+  
+  erow *row = (E.cursor_y >= E.numrows) ? NULL : &E.row[E.cursor_y];
   int row_len;
-  switch (key) {
-  case ARROW_RIGHT:
-    if (row && E->cursor_x < row->size) {
-      ++E->cursor_x;
-    } else if (row && E->cursor_x == row->size) {
-      E->cursor_y++;
-      E->cursor_x = 0;
+  
+  switch (key->data.arrow) {
+  case 'C': // Right
+    if (row && E.cursor_x < row->size) {
+      ++E.cursor_x;
+    } else if (row && E.cursor_x == row->size) {
+      E.cursor_y++;
+      E.cursor_x = 0;
     }
     break;
-  case ARROW_DOWN:
-    if (E->cursor_y < E->numrows) {
-      ++E->cursor_y;
+  case 'B': // Down
+    if (E.cursor_y < E.numrows) {
+      ++E.cursor_y;
     }
     break;
-  case ARROW_UP:
-    if (E->cursor_y != 0) {
-      --E->cursor_y;
+  case 'A': // Up
+    if (E.cursor_y != 0) {
+      --E.cursor_y;
     }
     break;
-  case ARROW_LEFT:
-    if (E->cursor_x != 0) {
-      --E->cursor_x;
-    } else if (E->cursor_y > 0) {
-      --E->cursor_y;
-      E->cursor_x = E->row[E->cursor_y].size;
+  case 'D': // Left
+    if (E.cursor_x != 0) {
+      --E.cursor_x;
+    } else if (E.cursor_y > 0) {
+      --E.cursor_y;
+      E.cursor_x = E.row[E.cursor_y].size;
     }
     break;
   }
 
-  row = (E->cursor_y >= E->numrows) ? NULL : &E->row[E->cursor_y];
+  row = (E.cursor_y >= E.numrows) ? NULL : &E.row[E.cursor_y];
   row_len = row ? row->size : 0;
-  if (E->cursor_x > row_len) {
-    E->cursor_x = row_len;
+  if (E.cursor_x > row_len) {
+    E.cursor_x = row_len;
   }
 }
 
-void editorProcessKeypress(struct editorConfig *E) {
-  static int quit_times = QUIT_TIMES;
-  int c = editorReadKey();
-  int times;
-
-  switch (c) {
-
-  case '\r':
-    editorInsertNewLine(E);
-    break;
-  case CTRL_KEY('q'):
-    if (E->dirty && quit_times > 0) {
-      editorSetStatusMessage(E,
-                             "WARNING! Changes hasn't been saved. Press Ctrl-Q "
-                             "another time to quit.");
-      --quit_times;
-      return;
+KeyInfo *stringToCodepoint(const char *string) {
+  KeyInfo *key = (KeyInfo *)malloc(sizeof(KeyInfo));
+  // test control key
+  if (!strncmp("CTRL", string, 4)) {
+    key->type = KEY_CTRL;
+    key->data.ctrl_char = toupper(string[6]) + 64;
+  } else if (!strncmp("ARROW", string, 5)) {
+    key->type = KEY_ARROW;
+    if (!strcmp("UP", string + 7)) {
+      key->data.arrow = 'A';
+    } else if (!strcmp("DOWN", string + 7)) {
+      key->data.arrow = 'B';
+    } else if (!strcmp("RIGHT", string + 7)) {
+      key->data.arrow = 'C';
+    } else if (!strcmp("LEFT", string + 7)) {
+      key->data.arrow = 'D';
     }
-    write(STDOUT_FILENO, "\x1b[2J", 4);
-    write(STDOUT_FILENO, CURSOR_TOP_LEFT, 3);
-    disableRawMode(E);
-    exit(0);
-    break;
-
-  case CTRL_KEY('s'):
-    editorSave(E);
-    break;
-
-  case BEG_LINE:
-    E->cursor_x = 0;
-    break;
-
-  case END_LINE:
-    if (E->cursor_y < E->numrows) {
-      E->cursor_x = E->row[E->cursor_y].size;
-    }
-    break;
-
-  case BACKSPACE:
-  case CTRL_KEY('h'):
-  case DEL_KEY:
-    if (c == DEL_KEY) {
-      editorMoveCursor(E, ARROW_RIGHT);
-    }
-    editorDelChar(E);
-    break;
-
-  case PAGE_UP:
-  case PAGE_DOWN: {
-    if (c == PAGE_UP) {
-      E->cursor_y = E->row_offset;
-    } else if (c == PAGE_DOWN) {
-      E->cursor_y = E->row_offset + E->screenrows - 1;
-      if (E->cursor_y > E->numrows) {
-        E->cursor_y = E->numrows;
-      }
-    }
-    times = E->screenrows;
-    while (--times) {
-      editorMoveCursor(E, c == PAGE_UP ? ARROW_UP : ARROW_DOWN);
-    }
-  } break;
-
-  case ARROW_UP:
-  case ARROW_DOWN:
-  case ARROW_LEFT:
-  case ARROW_RIGHT:
-    editorMoveCursor(E, c);
-    break;
-
-  case CTRL_KEY('l'):
-  case '\x1b':
-    break;
-  default:
-    editorInsertChar(E, c);
-    break;
   }
-  quit_times = QUIT_TIMES;
+
+  return key;
+}
+
+static int key_match(KeyInfo *a, KeyInfo *b) {
+  if (a->type != b->type) return 0;
+  if (a->modifiers != b->modifiers) return 0;
+  
+  switch (a->type) {
+    case KEY_CTRL:
+      return toupper(a->data.ctrl_char) == toupper(b->data.ctrl_char);
+    case KEY_ALT:
+      return a->data.alt_char == b->data.alt_char;
+    case KEY_ARROW:
+      return a->data.arrow == b->data.arrow;
+    case KEY_FUNCTION:
+      return a->data.function_num == b->data.function_num;
+    case KEY_CHAR:
+      return a->data.codepoint == b->data.codepoint;
+    case KEY_SPECIAL:
+    case KEY_NAVIGATION:
+      return a->data.special == b->data.special;
+    default:
+      return 0;
+  }
+}
+
+int executeKeyBind(KeyInfo *key_sequence) {
+  for (int i = 0; i < E.number_of_keybinds; ++i) {
+    fprintf(stderr, "Keybind found\n");
+    if (key_match(key_sequence, E.key_binds[i].key_sequence)) {
+      // Execute the lisp command
+      lisp_eval(lisp_cons(E.key_binds[i].command, lisp_null(), E.ctx),
+                &E.ctx_error, E.ctx);
+      return 1;
+    }
+  }
+  return 0;
+}
+
+void editorProcessKeypress() {
+  KeyInfo *key = editorReadKey();
+  if (!key)
+    return;
+
+  if (executeKeyBind(key)) {
+    fprintf(stderr, "Keybinds found\n");
+    return;
+  }
+  editorInsertChar(&key->c);
+  E.quit_times_buffer = E.constantes.QUIT_TIMES;
 }

src/output.c

@@ -4,24 +4,37 @@
 #include <string.h>
 #include <time.h>
 
-void editorDrawRows(struct editorConfig *E, struct abuf *ab) {
+extern struct editorConfig E;
+
+static void utf8_to_bytes(utf_8_char_t *chars, int count, unsigned char *output, int *output_len) {
+  int pos = 0;
+  for (int i = 0; i < count; i++) {
+    for (int j = 0; j < chars[i].len; j++) {
+      output[pos++] = chars[i].c[j];
+    }
+    fprintf(stderr, "bytes length : %s %d\n", chars[i].c, pos);
+  }
+  *output_len = pos;
+}
+
+void editorDrawRows(struct abuf *ab) {
   int y;
   char welcome[80];
   int welcome_len;
   int padding;
   int len;
   int file_row;
-  for (y = 0; y < E->screenrows; ++y) {
-    file_row = y + E->row_offset;
-    if (file_row >= E->numrows) {
-      if (E->numrows == 0 && y == E->screenrows / 3) {
+  for (y = 0; y < E.screenrows; ++y) {
+    file_row = y + E.row_offset;
+    if (file_row >= E.numrows) {
+      if (E.numrows == 0 && y == E.screenrows / 3) {
         welcome_len =
             snprintf(welcome, sizeof(welcome),
                      "Beluga text editor -- version %s", BELUGA_VERSION);
-        if (welcome_len > E->screencols) {
-          welcome_len = E->screencols;
+        if (welcome_len > E.screencols) {
+          welcome_len = E.screencols;
         }
-        padding = (E->screencols - welcome_len) / 2;
+        padding = (E.screencols - welcome_len) / 2;
         if (padding) {
           abAppend(ab, "~", 1);
           --padding;
@@ -34,54 +47,63 @@ void editorDrawRows(struct editorConfig *E, struct abuf *ab) {
         abAppend(ab, "~", 1);
       }
     } else {
-      len = E->row[file_row].rsize - E->col_offset;
+      len = E.row[file_row].rsize - E.col_offset;
       if (len < 0)
         len = 0;
-      if (len > E->screencols)
-        len = E->screencols;
-      abAppend(ab, &E->row[file_row].render[E->col_offset], len);
+      if (len > E.screencols)
+        len = E.screencols;
+      if (len > 0) {
+        unsigned char *display_buf = malloc(len * 4); // Max 4 bytes per char
+        int byte_len;
+
+        utf8_to_bytes(&E.row[file_row].render[E.col_offset], len, display_buf,
+                      &byte_len);
+        abAppend(ab, display_buf, byte_len);
+        fprintf(stderr, "display buffer : %s %d\n", display_buf, byte_len);
+        free(display_buf);
+      }
     }
     abAppend(ab, ERASE_END_LINE, 3);
     abAppend(ab, "\r\n", 2);
   }
 }
 
-void editorScroll(struct editorConfig *E) {
-  E->rx = E->cursor_x;
-  if (E->cursor_y < E->numrows) {
-    E->rx = editorRowCxToRx(&E->row[E->cursor_y], E->cursor_x);
+void editorScroll() {
+  E.rx = E.cursor_x;
+  if (E.cursor_y < E.numrows) {
+    E.rx = editorRowCxToRx(&E.row[E.cursor_y], E.cursor_x);
   }
 
-  if (E->cursor_y < E->row_offset) {
-    E->row_offset = E->cursor_y;
+  if (E.cursor_y < E.row_offset) {
+    E.row_offset = E.cursor_y;
   }
-  if (E->cursor_y >= E->row_offset + E->screenrows) {
-    E->row_offset = E->cursor_y - E->screenrows + 1;
+  if (E.cursor_y >= E.row_offset + E.screenrows) {
+    E.row_offset = E.cursor_y - E.screenrows + 1;
   }
-  if (E->rx < E->col_offset) {
-    E->col_offset = E->rx;
+  if (E.rx < E.col_offset) {
+    E.col_offset = E.rx;
   }
-  if (E->rx >= E->col_offset + E->screencols) {
-    E->col_offset = E->rx - E->screencols + 1;
+  if (E.rx >= E.col_offset + E.screencols) {
+    E.col_offset = E.rx - E.screencols + 1;
   }
 }
 
-void editorDrawStatusBar(struct editorConfig *E, struct abuf *ab) {
+void editorDrawStatusBar(struct abuf *ab) {
   int len, render_len;
   char status[80], render_status[80];
 
   abAppend(ab, "\x1b[7m", 4); // inverting colors
   len = snprintf(status, sizeof(status), "%.20s - %d lines%s",
-                 E->filename ? E->filename : "[No Name]", E->numrows,
-                 E->dirty ? "*" : "");
+                 E.filename ? E.filename : "[No Name]", E.numrows,
+                 E.dirty ? "*" : "");
   render_len = snprintf(render_status, sizeof(render_status), "%d/%d",
-                        E->cursor_y + 1, E->numrows);
-  if (len > E->screencols) {
-    len = E->screencols;
+                        E.cursor_y + 1, E.numrows);
+  if (len > E.screencols) {
+    len = E.screencols;
   }
   abAppend(ab, status, len);
-  while (len < E->screencols) {
-    if (E->screencols - len == render_len) {
+  while (len < E.screencols) {
+    if (E.screencols - len == render_len) {
       abAppend(ab, render_status, render_len);
       break;
     } else {
@@ -93,31 +115,31 @@ void editorDrawStatusBar(struct editorConfig *E, struct abuf *ab) {
   abAppend(ab, "\r\n", 2);
 }
 
-void editorDrawMessageBar(struct editorConfig *E, struct abuf *ab) {
-  int msg_len = strlen(E->status_msg);
+void editorDrawMessageBar(struct abuf *ab) {
+  int msg_len = strlen(E.status_msg);
   abAppend(ab, ERASE_END_LINE, 3);
-  if (msg_len > E->screencols) {
-    msg_len = E->screencols;
+  if (msg_len > E.screencols) {
+    msg_len = E.screencols;
   }
-  if (msg_len && time(NULL) - E->status_msg_time < 5) {
-    abAppend(ab, E->status_msg, msg_len);
+  if (msg_len && time(NULL) - E.status_msg_time < 5) {
+    abAppend(ab, E.status_msg, msg_len);
   }
 }
 
-void editorRefreshScreen(struct editorConfig *E) {
-  editorScroll(E);
+void editorRefreshScreen() {
+  editorScroll();
   struct abuf ab = ABUF_INIT;
   char buf[32];
 
   abAppend(&ab, HIDE_CURSOR, 6);
   abAppend(&ab, CURSOR_TOP_LEFT, 3);
 
-  editorDrawRows(E, &ab);
-  editorDrawStatusBar(E, &ab);
-  editorDrawMessageBar(E, &ab);
+  editorDrawRows(&ab);
+  editorDrawStatusBar(&ab);
+  editorDrawMessageBar(&ab);
 
-  snprintf(buf, sizeof(buf), "\x1b[%d;%dH", (E->cursor_y - E->row_offset) + 1,
-           (E->rx - E->col_offset) + 1);
+  snprintf(buf, sizeof(buf), "\x1b[%d;%dH", (E.cursor_y - E.row_offset) + 1,
+           (E.rx - E.col_offset) + 1);
   abAppend(&ab, buf, strlen(buf));
 
   abAppend(&ab, SHOW_CURSOR, 6);
@@ -126,10 +148,10 @@ void editorRefreshScreen(struct editorConfig *E) {
   abFree(&ab);
 }
 
-void editorSetStatusMessage(struct editorConfig *E, const char *fmt, ...) {
+void editorSetStatusMessage(const char *fmt, ...) {
   va_list ap;
   va_start(ap, fmt);
-  vsnprintf(E->status_msg, sizeof(E->status_msg), fmt, ap);
+  vsnprintf(E.status_msg, sizeof(E.status_msg), fmt, ap);
   va_end(ap);
-  E->status_msg_time = time(NULL);
+  E.status_msg_time = time(NULL);
 }

src/row_op.c

@@ -1,20 +1,55 @@
 #include "../include/row_op.h"
+#include "include/data.h"
+#include "include/define.h"
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 
+extern struct editorConfig E;
+
+static int is_tab(utf_8_char_t *ch) {
+  return ch->len == 1 && ch->c[0] == '\t';
+}
+
+// Helper function to check if two utf_8_char_t are equal
+static int utf8_char_equal(utf_8_char_t *a, utf_8_char_t *b) {
+  if (a->len != b->len) return 0;
+  return memcmp(a->c, b->c, a->len) == 0;
+}
+
+// Helper function to create a space character
+static utf_8_char_t make_space() {
+  utf_8_char_t space;
+  space.c[0] = ' ';
+  space.len = 1;
+  return space;
+}
+
 int editorRowCxToRx(erow *row, int cursor_x) {
   int render_x = 0;
   int i;
   for (i = 0; i < cursor_x; ++i) {
-    if (row->chars[i] == '\t') {
-      render_x += (TAB_LENGTH - 1) - (render_x % TAB_LENGTH);
+    if (is_tab(&row->chars[i])) {
+      render_x += (E.constantes.TAB_LENGTH - 1) - (render_x % E.constantes.TAB_LENGTH);
     }
     render_x++;
   }
   return render_x;
 }
 
+int editorRowRxToCx(erow *row, int rx) {
+  int cur_rx = 0;
+  int cx;
+  for (cx = 0; cx < row->size; cx++) {
+    if (is_tab(&row->chars[cx]))
+      cur_rx += (E.constantes.TAB_LENGTH - 1) - (cur_rx % E.constantes.TAB_LENGTH);
+    cur_rx++;
+    if (cur_rx > rx) return cx;
+  }
+  return cx;
+}
+
 /**
  * \fn editorUpdateRow(erow *row)
  * \brief Copy content of \p row in \p row->render.
@@ -24,95 +59,161 @@ void editorUpdateRow(erow *row) {
   int i, i_render;
   int tabs = 0;
 
-  // counting number of tabs
-
+  // Count number of tabs
   for (i = 0; i < row->size; ++i) {
-    tabs +=
-        (row->chars[i] == '\t'); /**< increment tabs of 1 if chars[i] is one. */
+    if (is_tab(&row->chars[i])) {
+      tabs++;
+    }
   }
 
   free(row->render);
-  row->render = malloc(row->size + tabs * (TAB_LENGTH - 1) +
-                       1); /**< Tabs needs TAB_LENGTH chars so TAB_LENGTH - 1
-                              more than the first already counted. */
+  // Allocate space for utf_8_char_t array
+  row->render = malloc(sizeof(utf_8_char_t) * (row->size + tabs * (E.constantes.TAB_LENGTH - 1)));
+  
+  if (!row->render) {
+    row->rsize = 0;
+    return;
+  }
 
-  // end of counting
   i_render = 0;
   for (i = 0; i < row->size; ++i) {
-    if (row->chars[i] == '\t') {
-      row->render[i_render++] = ' ';
-      while (i_render % TAB_LENGTH) {
-        row->render[i_render++] =
-            ' '; /**< Addind the right amount of spaces for tabs */
+    if (is_tab(&row->chars[i])) {
+      // Replace tab with spaces
+      row->render[i_render++] = make_space();
+      while (i_render % E.constantes.TAB_LENGTH) {
+        row->render[i_render++] = make_space();
       }
     } else {
       row->render[i_render++] = row->chars[i];
     }
   }
-  row->render[i_render] = '\0'; // Don't forget the end of string character.
   row->rsize = i_render;
 }
 
-void editorInsertRow(struct editorConfig *E, int at, char *s, size_t len) {
-  if (at < 0 || at > E->numrows) {
+void editorInsertRow(int at, char *s, size_t len) {
+  if (at < 0 || at > E.numrows) {
     return;
   }
   
-  E->row = realloc(E->row, sizeof(erow) * (E->numrows + 1));
-  memmove(&E->row[at + 1], &E->row[at], sizeof(erow) * (E->numrows - at));
+  erow *tmp = (erow *)realloc(E.row, sizeof(erow) * (E.numrows + 1));
+  if (!tmp) {
+    return;
+  }
+  E.row = tmp;
+  memmove(&E.row[at + 1], &E.row[at], sizeof(erow) * (E.numrows - at));
 
-  E->row[at].size = len;
-  E->row[at].chars = malloc(len + 1);
-  memcpy(E->row[at].chars, s, len);
-  E->row[at].chars[len] = '\0';
+  // Initialize the new row
+  E.row[at].size = 0;
+  E.row[at].chars = NULL;
+  E.row[at].rsize = 0;
+  E.row[at].render = NULL;
 
-  E->row[at].rsize = 0;
-  E->row[at].render = NULL;
-  editorUpdateRow(&E->row[at]);
+  // Count UTF-8 characters first
+  int char_count = 0;
+  int i = 0;
+  while (i < len) {
+    unsigned char first = (unsigned char)s[i];
+    int char_len;
     
-  ++E->numrows;
-  ++E->dirty;
+    if ((first & 0x80) == 0) {
+      char_len = 1;
+    } else if ((first & 0xE0) == 0xC0) {
+      char_len = 2;
+    } else if ((first & 0xF0) == 0xE0) {
+      char_len = 3;
+    } else if ((first & 0xF8) == 0xF0) {
+      char_len = 4;
+    } else {
+      char_len = 1; // Invalid, treat as single byte
+    }
+    
+    i += char_len;
+    char_count++;
+  }
+
+  // Allocate for the actual number of characters
+  if (char_count > 0) {
+    E.row[at].chars = malloc(sizeof(utf_8_char_t) * char_count);
+    if (!E.row[at].chars) {
+      return;
+    }
+  }
+  
+  // Now convert to utf_8_char_t array
+  i = 0;
+  E.row[at].size = 0;
+  while (i < len && E.row[at].size < char_count) {
+    utf_8_char_t ch;
+    
+    unsigned char first = (unsigned char)s[i];
+    if ((first & 0x80) == 0) {
+      ch.len = 1;
+    } else if ((first & 0xE0) == 0xC0) {
+      ch.len = 2;
+    } else if ((first & 0xF0) == 0xE0) {
+      ch.len = 3;
+    } else if ((first & 0xF8) == 0xF0) {
+      ch.len = 4;
+    } else {
+      ch.len = 1;
+    }
+    
+    // Copy bytes
+    for (int j = 0; j < ch.len && i < len; j++) {
+      ch.c[j] = s[i++];
+    }
+    
+    E.row[at].chars[E.row[at].size++] = ch;
+  }
+
+  editorUpdateRow(&E.row[at]);
+
+  
+  ++E.numrows;
+  ++E.dirty;
 }
 
+
 void editorFreeRow(erow *row) {
   free(row->render);
   free(row->chars);
 }
 
-void editorDelRow(struct editorConfig *E, int at) {
-  if (at < 0 || at >= E->numrows) {
+void editorDelRow(int at) {
+  if (at < 0 || at >= E.numrows) {
     return;
   }
-  editorFreeRow(&E->row[at]);
-  memmove(&E->row[at], &E->row[at + 1], sizeof(erow) * (E->numrows - at - 1));
-  --E->numrows;
-  ++E->dirty;
+  editorFreeRow(&E.row[at]);
+  memmove(&E.row[at], &E.row[at + 1], sizeof(erow) * (E.numrows - at - 1));
+  --E.numrows;
+  ++E.dirty;
 }
 
 /**
  * \fn editorRowInsertChar(erow *row, int at, int c)
  * \param at Index of where we want to insert the char */
 
-void editorRowInsertChar(struct editorConfig *E, erow *row, int at, int c) {
+void editorRowInsertChar(erow *row, int at, utf_8_char_t c) {
+  if (E.state == READ_ONLY)
+    return;
   if (at < 0 || at > row->size) {
     at = row->size;
   }
-  row->chars = realloc(row->chars, row->size + 2);
+  row->chars = realloc(row->chars, row->size + 1);
   memmove(&row->chars[at + 1], &row->chars[at], row->size - at + 1);
-  ++row->size;
+  ++(row->size);
   row->chars[at] = c;
+  fprintf(stderr, "Row insert : %s %d\n", c.c, c.len);
   editorUpdateRow(row);
-  ++E->dirty;
+  ++E.dirty;
 }
 
-void editorRowAppendString(struct editorConfig *E, erow *row, char *s,
-                           size_t len) {
+void editorRowAppendString(erow *row, char *s, size_t len) {
   row->chars = realloc(row->chars, row->size + len + 1);
   memcpy(&row->chars[row->size], s, len);
   row->size += len;
-  row->chars[row->size] = '\0';
   editorUpdateRow(row);
-  ++E->dirty;
+  ++E.dirty;
 }
 
 /**
@@ -120,12 +221,12 @@ void editorRowAppendString(struct editorConfig *E, erow *row, char *s,
  * \brief Delete the a char at the chosen position on the given row
  * \param at Index of the char to delete
  * \param row Row on operation is made */
-void editorRowDelchar(struct editorConfig *E, erow *row, int at) {
+void editorRowDelchar(erow *row, int at) {
   if (at < 0 || at >= row->size) {
     return;
   }
   memmove(&row->chars[at], &row->chars[at + 1], row->size - at);
   --row->size;
   editorUpdateRow(row);
-  ++E->dirty;
+  ++E.dirty;
 }

src/terminal.c

@@ -1,24 +1,30 @@
 #include "../include/terminal.h"
+#include "../include/data.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
 
 void die(const char *s) {
   write(STDOUT_FILENO, "\x1b[2J", 4);
   write(STDOUT_FILENO, CURSOR_TOP_LEFT, 3);
+  lisp_shutdown(E.ctx);
   perror(s);
   exit(1);
 }
 
-void disableRawMode(struct editorConfig *E) {
-  if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &E->orig_termios) == -1) {
+void disableRawMode() {
+  if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &E.orig_termios) == -1) {
     die("tcsetattr");
   }
 }
 
-void enableRawMode(struct editorConfig *E) {
-  if (tcgetattr(STDIN_FILENO, &E->orig_termios) == -1) {
+void enableRawMode() {
+  if (tcgetattr(STDIN_FILENO, &E.orig_termios) == -1) {
     die("tcgetattr");
   }
 
-  struct termios raw = E->orig_termios;
+  struct termios raw = E.orig_termios;
   raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
   raw.c_oflag &= ~(OPOST);
   raw.c_cflag |= (CS8);
@@ -31,73 +37,211 @@ void enableRawMode(struct editorConfig *E) {
   }
 }
 
-int editorReadKey() {
-  int nread;
-  char c;
-  char seq[3];
-  while ((nread = read(STDIN_FILENO, &c, 1)) != 1) {
-    if (nread == -1 && errno != EAGAIN) {
-      die("read");
+int utf8_char_length(unsigned char first_byte) {
+  if ((first_byte & 0x80) == 0)
+    return 1; // 0xxxxxxx - ASCII
+  if ((first_byte & 0xE0) == 0xC0)
+    return 2; // 110xxxxx - 2 bytes
+  if ((first_byte & 0xF0) == 0xE0)
+    return 3; // 1110xxxx - 3 bytes
+  if ((first_byte & 0xF8) == 0xF0)
+    return 4; // 11110xxx - 4 bytes
+  return 1;   // Invalid, treat as single byte
+}
+
+// Convert UTF-8 to Unicode code point
+unsigned int utf8_to_codepoint(const unsigned char *bytes, int len) {
+  if (len == 1)
+    return bytes[0];
+  if (len == 2)
+    return ((bytes[0] & 0x1F) << 6) | (bytes[1] & 0x3F);
+  if (len == 3)
+    return ((bytes[0] & 0x0F) << 12) | ((bytes[1] & 0x3F) << 6) |
+           (bytes[2] & 0x3F);
+  if (len == 4)
+    return ((bytes[0] & 0x07) << 18) | ((bytes[1] & 0x3F) << 12) |
+           ((bytes[2] & 0x3F) << 6) | (bytes[3] & 0x3F);
+  return 0;
+}
+
+void parse_key(unsigned char *seq, int len, KeyInfo *key) {
+  memcpy(key->c.c, seq, len);
+  key->c.len = len;
+  key->modifiers = MOD_NONE;
+  key->type = KEY_UNKNOWN;
+
+  // Control characters (Ctrl+A to Ctrl+Z)
+  if (len == 1 && seq[0] < 32 && seq[0] != 27 && seq[0] != 9 && seq[0] != 10 &&
+      seq[0] != 13) {
+    key->type = KEY_CTRL;
+    key->data.ctrl_char = seq[0] + 64;
+    return;
+  }
+
+  // Special single characters
+  if (len == 1) {
+    switch (seq[0]) {
+    case 9:
+    case 10:
+    case 13:
+    case 27:
+    case 127:
+      key->type = KEY_SPECIAL;
+      key->data.special = seq[0];
+      return;
     }
   }
 
-  if (c == '\x1b') {
-    if (read(STDIN_FILENO, &seq[0], 1) != 1 ||
-        read(STDIN_FILENO, &seq[1], 1) != 1) {
-      return '\x1b';
+  // Escape sequences
+  if (len >= 2 && seq[0] == 27) {
+    // Alt+key combinations
+    if (len == 2 && seq[1] >= 32 && seq[1] < 127) {
+      key->type = KEY_ALT;
+      key->data.alt_char = seq[1];
+      return;
     }
-    if (seq[0] == '[') {
-      if (seq[1] >= '0' && seq[1] <= '9') {
-        if (read(STDIN_FILENO, &seq[2], 1) != 1) {
-          return '\x1b';
+
+    // CSI sequences (ESC [ ...)
+    if (len >= 3 && seq[1] == '[') {
+      // Arrow keys
+      if (len == 3) {
+        switch (seq[2]) {
+        case 'A':
+        case 'B':
+        case 'C':
+        case 'D':
+          key->type = KEY_ARROW;
+          key->data.arrow = seq[2];
+          return;
+        case 'H':
+        case 'F':
+          key->type = KEY_NAVIGATION;
+          key->data.special = seq[2];
+          return;
         }
-        if (seq[2] == '~') {
-          switch (seq[1]) {
-          case '1':
-            return BEG_LINE;
-          case '3':
-            return DEL_KEY;
-          case '4':
-            return END_LINE;
-          case '5':
-            return PAGE_UP;
-          case '6':
-            return PAGE_DOWN;
-          case '7':
-            return BEG_LINE;
-          case '8':
-            return END_LINE;
+      }
+
+      // Modified keys (ESC [ 1 ; modifier letter)
+      if (len >= 6 && seq[2] == '1' && seq[3] == ';') {
+        int modifier = seq[4] - '0';
+        char k = seq[5];
+
+        if (modifier & 1)
+          key->modifiers |= MOD_SHIFT;
+        if (modifier & 2)
+          key->modifiers |= MOD_ALT;
+        if (modifier & 4)
+          key->modifiers |= MOD_CTRL;
+
+        switch (k) {
+        case 'A':
+        case 'B':
+        case 'C':
+        case 'D':
+          key->type = KEY_ARROW;
+          key->data.arrow = k;
+          return;
+        case 'H':
+        case 'F':
+          key->type = KEY_NAVIGATION;
+          key->data.special = k;
+          return;
+        }
+      }
+
+      // Function keys and navigation
+      if (len == 4 && seq[3] == '~') {
+        int num = seq[2] - '0';
+        if (num >= 1 && num <= 6) {
+          key->type = KEY_NAVIGATION;
+          key->data.special = seq[2];
+          return;
+        }
+      }
+
+      if (len == 5 && seq[4] == '~') {
+        int num = (seq[2] - '0') * 10 + (seq[3] - '0');
+        if (num >= 15 && num <= 24) {
+          key->type = KEY_FUNCTION;
+          // Map to F5-F12
+          int f_map[] = {15, 17, 18, 19, 20, 21, 23, 24};
+          for (int i = 0; i < 8; i++) {
+            if (f_map[i] == num) {
+              key->data.function_num = i + 5;
+              return;
+            }
           }
         }
-      } else {
-
-        switch (seq[1]) {
-        case 'A':
-          return ARROW_UP;
-        case 'B':
-          return ARROW_DOWN;
-        case 'C':
-          return ARROW_RIGHT;
-        case 'D':
-          return ARROW_LEFT;
-        case 'H':
-          return BEG_LINE;
-        case 'F':
-          return END_LINE;
-        }
-      }
-    } else if (seq[0] == 'O') {
-      switch (seq[1]) {
-      case 'H':
-        return BEG_LINE;
-      case 'F':
-        return END_LINE;
       }
     }
-    return '\x1b';
-  } else {
-    return c;
+
+    // SS3 sequences (ESC O ...)
+    if (len == 3 && seq[1] == 'O') {
+      switch (seq[2]) {
+      case 'P':
+      case 'Q':
+      case 'R':
+      case 'S':
+        key->type = KEY_FUNCTION;
+        key->data.function_num = seq[2] - 'P' + 1;
+        return;
+      case 'H':
+      case 'F':
+        key->type = KEY_NAVIGATION;
+        key->data.special = seq[2];
+        return;
+      }
+    }
   }
+
+  // UTF-8 character
+  if (seq[0] >= 32 || (seq[0] & 0x80)) {
+    int char_len = utf8_char_length(seq[0]);
+    fprintf(stderr, "char length : %d\n", char_len);
+    if (char_len <= len) {
+      key->type = KEY_CHAR;
+      memcpy(key->c.c, seq, len);
+      key->c.len = len;
+      return;
+    }
+  }
+}
+
+KeyInfo *editorReadKey() {
+  fd_set fds;
+  int timeout_ms = 10;
+  struct timeval tv;
+  int total = 0;
+  KeyInfo *key = (KeyInfo *)malloc(sizeof(KeyInfo));
+  int len;
+  unsigned char buffer[20];
+
+  if (read(STDIN_FILENO, &buffer[0], 1) <= 0)
+    return 0;
+
+  while (total < 20) {
+    FD_ZERO(&fds);
+    FD_SET(STDIN_FILENO, &fds);
+    tv.tv_sec = 0;
+    tv.tv_usec = timeout_ms * 1000;
+
+    int ret = select(STDIN_FILENO + 1, &fds, NULL, NULL, &tv);
+    if (ret <= 0)
+      break;
+
+    if (read(STDIN_FILENO, &buffer[total], 1) <= 0)
+      break;
+    total++;
+  }
+  total++;
+
+  parse_key(buffer, total, key);
+
+  // DEBUG
+
+  fprintf(stderr, "%s %d %d %s %d\n", buffer, buffer[0], buffer[1], key->c.c, key->c.len);
+  
+  return key;
 }
 
 int getCursorPosition(int *rows, int *cols) {