add utf8_char_t struct

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/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 */
 };
 

include/define.h

@@ -8,19 +8,10 @@
 #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}
 

include/editor_op.h

@@ -2,9 +2,9 @@
 #define EDITOR_OP_H_
 
 #include "data.h"
-void editorInsertChar(int c);
+void editorInsertChar(utf_8_char_t *c);
 
-void editorInsertNewLine();
+void editorInsertNewLine(void);
 
 void editorDelChar();
 

include/input.h

@@ -24,9 +24,9 @@ char *editorPrompt(char *prompt, char * PlaceHolder, char bPathMode);
 
 char *key_to_string(int key);
 
-void editorMoveCursor(int key);
+void editorMoveCursor(KeyInfo * key);
 
-int executeKeyBind(char *key_sequence);
+int executeKeyBind(KeyInfo *key_sequence);
 
 /**
  * \fn void editorProcessKeypress()

include/row_op.h

@@ -20,7 +20,7 @@ void editorFreeRow(erow *row);
 
 void editorDelRow(int at);
 
-void editorRowInsertChar(erow *row, int at, int c);
+void editorRowInsertChar(erow *row, int at, utf_8_char_t c);
 
 void editorRowAppendString(erow *row, char *s, size_t len);
 

include/terminal.h

@@ -25,10 +25,12 @@ void disableRawMode();
 
 void enableRawMode();
 
-int editorReadKey();
+KeyInfo * editorReadKey();
 
 int getCursorPosition(int *rows, int *cols);
 
+KeyInfo *stringToCodepoint(const char *string);
+
 int getWindowSize(int *rows, int *cols);
 
 #endif