add utf8_char_t struct

include/data.h

@@ -7,6 +7,12 @@
 
 #include "lisp.h"
 
+
+typedef struct{
+  unsigned char c[4];
+  char len;
+} utf_8_char_t;
+
 /**
  * \struct erow
  * \brief Store one editor row
@@ -16,8 +22,8 @@
 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 {
@@ -31,10 +37,45 @@ struct const_t {
   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 {
-  char *key_sequence;
+  KeyInfo *key_sequence;
   Lisp command;
-  
 };
 
 /**
@@ -77,7 +118,7 @@ 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 */
 };