updated folder structure

include/common.h

@@ -0,0 +1,116 @@
+/**
+ * common.h
+ * Common includes, defines and macros used throughout the shell
+ */
+
+#ifndef COMMON_H
+#define COMMON_H
+
+// Standard library includes
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>    // For isprint
+#include <fcntl.h>    // For file control
+#include <unistd.h>   // For POSIX API (replaces direct.h)
+#include <sys/types.h>
+#include <sys/wait.h>  // For waitpid
+#include <sys/stat.h>  // For stat (replaces fileapi.h)
+#include <termios.h>   // For terminal control
+#include <sys/ioctl.h> // For console dimensions
+#include <signal.h>    // For signal handling
+#include <time.h>      // For time functions
+#include <limits.h>    // For PATH_MAX
+
+// Define PATH_MAX if not defined
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
+// Common defines
+#define LSH_RL_BUFSIZE 1024
+#define LSH_TOK_BUFSIZE 64
+#define LSH_TOK_DELIM " \t\r\n\a"
+
+// Terminal control and color codes (ANSI sequences)
+#define ANSI_COLOR_RESET   "\x1b[0m"
+#define ANSI_COLOR_BLACK   "\x1b[30m"
+#define ANSI_COLOR_RED     "\x1b[31m"
+#define ANSI_COLOR_GREEN   "\x1b[32m"
+#define ANSI_COLOR_YELLOW  "\x1b[33m"
+#define ANSI_COLOR_BLUE    "\x1b[34m"
+#define ANSI_COLOR_MAGENTA "\x1b[35m"
+#define ANSI_COLOR_CYAN    "\x1b[36m"
+#define ANSI_COLOR_WHITE   "\x1b[37m"
+
+// Background colors
+#define ANSI_BG_BLACK   "\x1b[40m"
+#define ANSI_BG_RED     "\x1b[41m"
+#define ANSI_BG_GREEN   "\x1b[42m"
+#define ANSI_BG_YELLOW  "\x1b[43m"
+#define ANSI_BG_BLUE    "\x1b[44m"
+#define ANSI_BG_MAGENTA "\x1b[45m"
+#define ANSI_BG_CYAN    "\x1b[46m"
+#define ANSI_BG_WHITE   "\x1b[47m"
+
+// Cursor movement and screen control
+#define ANSI_CLEAR_SCREEN "\x1b[2J"
+#define ANSI_CURSOR_HOME  "\x1b[H"
+#define ANSI_SAVE_CURSOR  "\x1b[s"
+#define ANSI_RESTORE_CURSOR "\x1b[u"
+
+// Key code definitions used by the line reader
+#define KEY_BACKSPACE 127  // Different on Linux
+#define KEY_TAB 9
+#define KEY_ENTER 10       // Linux: 10 (LF) or 13 (CR)
+#define KEY_ESCAPE 27
+
+// Special keys (Linux terminal uses escape sequences)
+// These will need handling in the line reader
+#define KEY_UP    1000
+#define KEY_DOWN  1001
+#define KEY_LEFT  1002
+#define KEY_RIGHT 1003
+#define KEY_SHIFT_ENTER 1010
+#define KEY_SHIFT_TAB 1011
+
+// Typedefs for compatibility
+typedef unsigned int UINT;
+typedef unsigned short WORD;
+typedef int BOOL;
+typedef int HANDLE;
+typedef int DWORD;
+
+// Define Windows constants
+#define FALSE 0
+#define TRUE 1
+
+// Struct to replace COORD
+typedef struct {
+    short X;
+    short Y;
+} COORD;
+
+// Struct to replace SMALL_RECT
+typedef struct {
+    short Left;
+    short Top;
+    short Right;
+    short Bottom;
+} SMALL_RECT;
+
+// Struct to replace CONSOLE_SCREEN_BUFFER_INFO
+typedef struct {
+    COORD dwSize;
+    COORD dwCursorPosition;
+    WORD wAttributes;
+    SMALL_RECT srWindow;
+} CONSOLE_SCREEN_BUFFER_INFO;
+
+// Struct to replace CONSOLE_CURSOR_INFO
+typedef struct {
+    DWORD dwSize;
+    BOOL bVisible;
+} CONSOLE_CURSOR_INFO;
+
+#endif // COMMON_H