Started Implementing a BASIC interpriter

.vscode/c_cpp_properties.json

@@ -0,0 +1,22 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${default}",
+                "${workspaceFolder}/**"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ],
+            "windowsSdkVersion": "10.0.22621.0",
+            "compilerPath": "C:/msys64/mingw64/bin/gcc.exe",
+            "cStandard": "c17",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "linux-gcc-x64"
+        }
+    ],
+    "version": 4
+}

src/impl/kernel/main.c

@@ -10,11 +10,9 @@
 #include "window.h"
 #include "fs.h"
 #include "fat12.h"
+#include "basic.h"
 
-
-
-
-#define COMMAND_BUFFER_SIZE 256  // Increase buffer size to handle longer commands
+#define COMMAND_BUFFER_SIZE 256 // Increase buffer size to handle longer commands
 #define BACKSPACE_KEY 8
 #define HISTORY_SIZE 10
 #define COMMAND_BUFFER_SIZE 256
@@ -22,29 +20,31 @@
 
 extern void kpanic(int error_code);
 
-
-void shutdown_system() {
-    __asm__ (
-        "movl $1, %eax\n"         // syscall number for sys_reboot (1 in this case)
-        "movl $0, %ebx\n"         // reboot flags
-        "movl $0, %ecx\n"         // no additional arguments
-        "movl $0, %edx\n"         // no additional arguments
-        "int $0x80\n"             // interrupt to invoke syscall
+void shutdown_system()
+{
+    __asm__(
+        "movl $1, %eax\n" // syscall number for sys_reboot (1 in this case)
+        "movl $0, %ebx\n" // reboot flags
+        "movl $0, %ecx\n" // no additional arguments
+        "movl $0, %edx\n" // no additional arguments
+        "int $0x80\n"     // interrupt to invoke syscall
     );
 }
 
-
-
-
 char commandHistory[HISTORY_SIZE][COMMAND_BUFFER_SIZE];
 int currentHistoryIndex = 0;
 int historyCount = 0;
 
-void add_to_history(const char* command) {
-    if (historyCount < HISTORY_SIZE) {
+void add_to_history(const char *command)
+{
+    if (historyCount < HISTORY_SIZE)
+    {
         historyCount++;
-    } else {
-        for (int i = 1; i < HISTORY_SIZE; i++) {
+    }
+    else
+    {
+        for (int i = 1; i < HISTORY_SIZE; i++)
+        {
             strcpy(commandHistory[i - 1], commandHistory[i]);
         }
     }
@@ -52,23 +52,26 @@ void add_to_history(const char* command) {
     currentHistoryIndex = historyCount;
 }
 
-const char* get_previous_command() {
-    if (currentHistoryIndex > 0) {
+const char *get_previous_command()
+{
+    if (currentHistoryIndex > 0)
+    {
         currentHistoryIndex--;
         return commandHistory[currentHistoryIndex];
     }
     return NULL;
 }
 
-const char* get_next_command() {
-    if (currentHistoryIndex < historyCount - 1) {
+const char *get_next_command()
+{
+    if (currentHistoryIndex < historyCount - 1)
+    {
         currentHistoryIndex++;
         return commandHistory[currentHistoryIndex];
     }
     return NULL;
 }
 
-
 const void clear()
 {
     print_set_color(PRINT_COLOR_WHITE, PRINT_COLOR_BLACK); // Set text color
@@ -79,113 +82,127 @@ const void clear()
     print_setup_prompt();
 }
 
-
-
-
-void halt(){
+void halt()
+{
     print_str("[ WARN ] HALT\n");
-    while (1) {}
+    while (1)
+    {
+    }
 }
 
-void commandHandler(char* command) {
+void commandHandler(char *command)
+{
     printf("\n");
 
-    if (strcmp(command, "cls") == 0) {
+    if (strcmp(command, "cls") == 0)
+    {
         clear();
-    } else if (strcmp(command, "knp") == 0) {
+    }
+    else if (strcmp(command, "knp") == 0)
+    {
         kpanic(1);
-    } else if (int_strncmp(command, "echo ", 5) == 0) {
-        char* message = command + 5;  // Skip the "echo " part
+    }
+    else if (int_strncmp(command, "echo ", 5) == 0)
+    {
+        char *message = command + 5; // Skip the "echo " part
         print_str("\n");
         print_str(message);
         print_str("\n");
-    } else if (int_strncmp(command, "cwin", 4) == 0) {
+    }
+    else if (int_strncmp(command, "cwin", 4) == 0)
+    {
         // Define window properties
         Window myWindow;
-        int x = 8; // X position of the window
-        int y = 4; // Y position of the window
-        int width = 30; // Width of the window
-        int height = 10; // Height of the window
-        uint8_t borderColor = PRINT_COLOR_RED; // Border color
+        int x = 8;                                  // X position of the window
+        int y = 4;                                  // Y position of the window
+        int width = 30;                             // Width of the window
+        int height = 10;                            // Height of the window
+        uint8_t borderColor = PRINT_COLOR_RED;      // Border color
         uint8_t backgroundColor = PRINT_COLOR_BLUE; // Background color
-    
+
         // Create and display the window
         create_window(&myWindow, x, y, width, height, borderColor, backgroundColor, "Main Window");
-    
+
         // Print text inside the window
         print_set_color(PRINT_COLOR_WHITE, PRINT_COLOR_BLUE); // Set text color
         print_text_in_window(&myWindow, 2, 2, "Window Manager is a ");
         print_text_in_window(&myWindow, 2, 3, "Work in progress, Sorry :("); // Print text inside the window
-        print_text_in_window(&myWindow, 2, 4, "do [ cls ] to clear"); // Print text inside the window
-        
-        
-        
-    } else if (int_strncmp(command, "exit", 4) == 0) {
+        print_text_in_window(&myWindow, 2, 4, "do [ cls ] to clear");        // Print text inside the window
+    }
+    else if (int_strncmp(command, "exit", 4) == 0)
+    {
         printf("Driver Call [ shutdown_system(); ] \n");
         shutdown_system();
-        
-        
-    }  else if (int_strncmp(command, "panic_test", 10) == 0) {
-        int _y = 1/0;
+    }
+    else if (int_strncmp(command, "panic_test", 10) == 0)
+    {
+        int _y = 1 / 0;
         printf("Output %d\n", _y);
-        
-    } else if (int_strncmp(command, "test", 4) == 0) {
-        
+    }
+    else if (int_strncmp(command, "test", 4) == 0)
+    {
+
         //// Test custom malloc and free
-        //void* block1 = malloc(32);
-        //void* block2 = malloc(64);
-        //void* block3 = malloc(128);
-    //
+        // void* block1 = malloc(32);
+        // void* block2 = malloc(64);
+        // void* block3 = malloc(128);
+        //
         //// List used blocks
-        //list_used_blocks();
-    //
+        // list_used_blocks();
+        //
         //// Free a block and check again
-        //free(block2);
-        //printf("\nAfter freeing block2:\n");
-        //list_used_blocks();
+        // free(block2);
+        // printf("\nAfter freeing block2:\n");
+        // list_used_blocks();
         //
-        //void* block4 = malloc(64);
+        // void* block4 = malloc(64);
         //
-        //list_used_blocks();
-        
-        
+        // list_used_blocks();
+
         create_game();
-        
-    } else if (int_strncmp(command, "split", 5) == 0) {
+    }
+    else if (int_strncmp(command, "split", 5) == 0)
+    {
         printf("Kernel Call [ split_string(); ]\n");
-        
+
         // Check the length of the command string and use it properly
-        char** new_command = split_string(command, ",", strlen(command));
-        
-        //char** new_command = {{NULL, NULL, NULL, NULL}};
-    
-        if (new_command) {
+        char **new_command = split_string(command, ",", strlen(command));
+
+        // char** new_command = {{NULL, NULL, NULL, NULL}};
+
+        if (new_command)
+        {
             // Add a loop to print all the elements in the new_command array for debugging
-            for (int i = 0; new_command[i] != NULL; i++) {
+            for (int i = 0; new_command[i] != NULL; i++)
+            {
                 printf("new_command[%d]: %s\n", i, new_command[i]);
             }
-            
-            //halt();  // Debug halt
-    
+
+            // halt();  // Debug halt
+
             // Ensure that new_command[1] exists before accessing it
-            if (new_command[1] != NULL) {
+            if (new_command[1] != NULL)
+            {
                 printf("%s\n", new_command[1]);
-            } else {
+            }
+            else
+            {
                 printf("Error: new_command[1] is NULL\n");
             }
-    } else {
-        printf("Error: split_string returned NULL\n");
+        }
+        else
+        {
+            printf("Error: split_string returned NULL\n");
+        }
     }
-
-
-    } else {
+    else
+    {
         printf("Unknown command: %s\n", command);
     }
 }
 
-
-
-void print_setup_prompt() {
+void print_setup_prompt()
+{
     move_cursor(0, 0);
     print_set_color(PRINT_COLOR_LIGHT_RED, PRINT_COLOR_BLACK);
     print_str("-------------------- ");
@@ -197,34 +214,58 @@ void print_setup_prompt() {
     print_str("V 1.5.01\n");
 }
 
+int test_basic()
+{
+    InterpreterState state;
+    init_state(&state);
 
+    const char *program[] = {
+        "LET A = 10",
+        "LET B = 20",
+        "PRINT A + B",
+        "LET A = \"Hello\"",
+        "LET B = \" World\"",
+        "PRINT A + B",
+        "END",
+
+    };
+
+    for (size_t i = 0; i < sizeof(program) / sizeof(program[0]); i++)
+    {
+        execute_line(&state, program[i]);
+        if (!state.running)
+            break;
+    }
+
+    return 0;
+}
+
+void kernel_main()
+{
 
-void kernel_main() {
-    
     init_keyboard_driver();
-    
-    
-    
-    
+
     idt_install();
-    
-    
+
     print_str("[ WARN ] Skipping File System Initialization...\n[ INFO ] Do [ fsinit ] to initalize the filesystem\n");
-    
-    if (fat12_init() == 0) {
+
+    if (fat12_init() == 0)
+    {
         printf("Filesystem mounted\n");
 
         fat12_read_root_directory();
-        
+
         fat12_dir_entry_t entry;
-        if (fat12_find_file("HELLOTXT", &entry)) {
+        if (fat12_find_file("HELLOTXT", &entry))
+        {
             printf("File found: HELLO.TXT\n");
         }
     }
-    
-    
-    print_setup_prompt();
+    clear();
 
+    test_basic();
+
+    print_setup_prompt();
 
     print_str(" > ");
 
@@ -232,57 +273,64 @@ void kernel_main() {
     char key;
     bool keydown = false;
     char commandBuffer[COMMAND_BUFFER_SIZE];
-    size_t commandLength = 0;  // To track the length of the current command
+    size_t commandLength = 0; // To track the length of the current command
 
-
-    while (1) {
+    while (1)
+    {
         key = read_key();
 
-        if (key != 0) {
-            if (!keydown) {
+        if (key != 0)
+        {
+            if (!keydown)
+            {
                 CursorPosition pos = get_print_cursor_pos();
-                move_cursor(pos.x,pos.y);
-                if (key == 10) {  // Enter key
-                    commandBuffer[commandLength] = '\0';  // Null-terminate the command
+                move_cursor(pos.x, pos.y);
+                if (key == 10)
+                {                                        // Enter key
+                    commandBuffer[commandLength] = '\0'; // Null-terminate the command
                     commandHandler(commandBuffer);
 
                     // Reset command buffer for the next input
                     commandLength = 0;
                     print_str(" > ");
-
-                } else if (key == BACKSPACE_KEY) {  // Backspace key
-                    if (commandLength > 0) {
+                }
+                else if (key == BACKSPACE_KEY)
+                { // Backspace key
+                    if (commandLength > 0)
+                    {
                         // Remove the last character from the buffer
                         commandLength--;
-                        commandBuffer[commandLength] = '0';  // Null-terminate after removal
+                        commandBuffer[commandLength] = '0'; // Null-terminate after removal
 
                         // Clear the character from the screen (overwrite with space)
                         // Move cursor back one position
-                        offset_print_cursor(-1,0);
-                        print_char(' ');  // Overwrite the character
-                        offset_print_cursor(-1,0); // Move cursor back one position(because its moved left one by the rpintf)
-
-
+                        offset_print_cursor(-1, 0);
+                        print_char(' ');            // Overwrite the character
+                        offset_print_cursor(-1, 0); // Move cursor back one position(because its moved left one by the rpintf)
                     }
-
-                } else {
-                    if (key >= 32 && key <= 126) {  // Check if the key is a printable character
-                        if (commandLength < COMMAND_BUFFER_SIZE - 1) {
-                            commandBuffer[commandLength++] = key;  // Append character to buffer
+                }
+                else
+                {
+                    if (key >= 32 && key <= 126)
+                    { // Check if the key is a printable character
+                        if (commandLength < COMMAND_BUFFER_SIZE - 1)
+                        {
+                            commandBuffer[commandLength++] = key; // Append character to buffer
                             commandBuffer[commandLength] = '\0';  // Null-terminate the buffer
-                            print_char(key);  // Print key to the screen
+                            print_char(key);                      // Print key to the screen
                         }
                     }
                 }
                 keydown = true;
             }
-        } else {
+        }
+        else
+        {
             keydown = false;
         }
-        
+
         // int x = 100/0;
     }
 
     kpanic(2);
-
 }

src/impl/x86_64/basic.c

@@ -0,0 +1,184 @@
+#include "memory.h"
+#include "print.h"
+#include "strings.h"
+#include "stdint.h"
+#include "stddef.h"
+#include "basic.h"
+
+
+
+// Utility: Find or create a variable by name
+Variable* get_variable(InterpreterState* state, const char* name) {
+    for (size_t i = 0; i < state->variable_count; i++) {
+        if (strcmp(state->variables[i].name, name) == 0) {
+            return &state->variables[i];
+        }
+    }
+    if (state->variable_count < MAX_VARIABLES) {
+        Variable* var = &state->variables[state->variable_count++];
+        strncpy(var->name, name, sizeof(var->name) - 1);
+        var->name[sizeof(var->name) - 1] = '\0';
+        var->value = 0;
+        var->str_value = NULL;
+        return var;
+    }
+    return NULL; // No space for more variables
+}
+
+// Parse an integer from a string, skipping leading whitespace
+int parse_int(const char* str) {
+    while (*str == ' ') str++; // Skip leading spaces
+    int result = 0;
+    int sign = 1;
+    if (*str == '-') {
+        sign = -1;
+        str++;
+    }
+    while (*str >= '0' && *str <= '9') {
+        result = result * 10 + (*str - '0');
+        str++;
+    }
+    return result * sign;
+}
+
+
+
+
+const char* evaluate_expression(InterpreterState* state, const char* expr) {
+    char buffer[64];
+    strncpy(buffer, expr, sizeof(buffer) - 1);
+    buffer[sizeof(buffer) - 1] = '\0';
+
+    char* plus = strrchr(buffer, '+');
+    if (plus) {
+        *plus = '\0';
+
+        // Evaluate the left and right sides only once
+        const char* left = evaluate_expression(state, buffer);
+        const char* right = evaluate_expression(state, plus + 1);
+
+        // Debug output
+        printf("DEBUG: Left operand: %s\n", left);
+        printf("DEBUG: Right operand: %s\n", right);
+
+        // Check if both sides are numeric
+        int left_is_number = (left[0] >= '0' && left[0] <= '9') || (left[0] == '-' && left[1] >= '0' && left[1] <= '9');
+        int right_is_number = (right[0] >= '0' && right[0] <= '9') || (right[0] == '-' && right[1] >= '0' && right[1] <= '9');
+
+        static char result[128];
+
+        if (left_is_number && right_is_number) {
+            // Parse the left and right operands
+            int left_value = parse_int(left);
+            int right_value = parse_int(right);
+
+            // Correct addition logic
+            int sum = left_value + right_value;
+
+            // Debug addition
+            printf("DEBUG: Adding %d + %d = %d\n", left_value, right_value, sum);
+
+            // Format the result as a string
+            snprintf(result, sizeof(result), "%d", sum);
+        } else {
+            // Concatenate strings
+            snprintf(result, sizeof(result), "%s%s", left, right);
+
+            // Debug string concatenation
+            printf("DEBUG: Concatenating strings: %s + %s = %s\n", left, right, result);
+        }
+        return result;
+    }
+
+    // Trim leading and trailing spaces
+    const char* start = buffer;
+    while (*start == ' ') start++;
+
+    char* end = buffer + strlen(buffer) - 1;
+    while (end > start && *end == ' ') *end-- = '\0';
+
+    if (start[0] >= 'A' && start[0] <= 'Z') {
+        Variable* var = get_variable(state, start);
+        if (var) {
+            static char var_result[64];
+            if (var->str_value) {
+                strncpy(var_result, var->str_value, sizeof(var_result) - 1);
+                var_result[sizeof(var_result) - 1] = '\0';
+                return var_result;
+            } else {
+                snprintf(var_result, sizeof(var_result), "%d", var->value);
+                return var_result;
+            }
+        }
+    }
+
+    if (start[0] == '"') {
+        // String literal
+        size_t len = strlen(start);
+        if (start[len - 1] == '"') {
+            static char str_result[64];
+            strncpy(str_result, start + 1, len - 2);
+            str_result[len - 2] = '\0';
+            return str_result;
+        }
+    }
+
+    static char int_result[16];
+    snprintf(int_result, sizeof(int_result), "%d", parse_int(start));
+    return int_result;
+}
+
+
+
+// Interpret a single line of code
+void interpret_line(InterpreterState* state, const char* line) {
+    if (strncmp(line, "LET", 3) == 0) {
+        const char* rest = line + 3;
+        while (*rest == ' ') rest++;
+        const char* equals = strchr(rest, '=');
+        if (!equals) return;
+
+        char var_name[16];
+        strncpy(var_name, rest, equals - rest);
+        var_name[equals - rest] = '\0';
+
+        // Trim trailing spaces from var_name
+        size_t len = strlen(var_name);
+        while (len > 0 && var_name[len - 1] == ' ') {
+            var_name[--len] = '\0';
+        }
+
+        Variable* var = get_variable(state, var_name);
+        if (var) {
+            const char* value = evaluate_expression(state, equals + 1);
+            if (value[0] >= '0' && value[0] <= '9') {
+                var->value = parse_int(value);
+                var->str_value = NULL;
+            } else {
+                var->str_value = malloc(strlen(value) + 1);
+                strcpy(var->str_value, value);
+            }
+        }
+    } else if (strncmp(line, "PRINT", 5) == 0) {
+        const char* rest = line + 5;
+        while (*rest == ' ') rest++;
+        const char* value = evaluate_expression(state, rest);
+        printf("%s\n", value);
+    } else if (strncmp(line, "END", 3) == 0) {
+        printf("Program terminated.\n");
+        state->running = 0;
+    }
+}
+
+// Initialize interpreter state
+void init_state(InterpreterState* state) {
+    state->variable_count = 0;
+    state->running = 1;
+}
+
+// Execute a single line in the context of a state
+void execute_line(InterpreterState* state, const char* line) {
+    printf("Executing line: %s\n", line); // Debugging
+    interpret_line(state, line);
+}
+

src/impl/x86_64/boot/isr.asm

@@ -1,139 +1,139 @@
-; isr.asm - ISR assembly stubs
-
-global isr0, isr1, isr2, isr3, isr4, isr5, isr6, isr7, isr8, isr9, isr10, isr11, isr12, isr13, isr14, isr15
-global isr16, isr17, isr18, isr19, isr20, isr21, isr22, isr23, isr24, isr25, isr26, isr27, isr28, isr29, isr30, isr31
-extern isr_common_handler
-
-section .text
-
-; ISRs 0 to 13 (no error code pushed by CPU)
-isr0:
-    cli
-    push 0             ; Push error code (none for isr0)
-    push 0             ; Push interrupt number
-    jmp isr_common_handler
-
-isr1:
-    cli
-    push 0
-    push 1
-    jmp isr_common_handler
-
-isr2:
-    cli
-    push 0
-    push 2
-    jmp isr_common_handler
-
-isr3:
-    cli
-    push 0
-    push 3
-    jmp isr_common_handler
-
-isr4:
-    cli
-    push 0
-    push 4
-    jmp isr_common_handler
-
-isr5:
-    cli
-    push 0
-    push 5
-    jmp isr_common_handler
-
-isr6:
-    cli
-    push 0
-    push 6
-    jmp isr_common_handler
-
-isr7:
-    cli
-    push 0
-    push 7
-    jmp isr_common_handler
-
-isr8:
-    cli
-    push 0
-    push 8
-    jmp isr_common_handler
-
-isr9:
-    cli
-    push 0
-    push 9
-    jmp isr_common_handler
-
-isr10:
-    cli
-    push 0
-    push 10
-    jmp isr_common_handler
-
-isr11:
-    cli
-    push 0
-    push 11
-    jmp isr_common_handler
-
-isr12:
-    cli
-    push 0
-    push 12
-    jmp isr_common_handler
-
-isr13:
-    cli
-    push 0
-    push 13
-    jmp isr_common_handler
-
-; ISR 14 (Page Fault) requires error code pushed by CPU
-isr14:
-    cli
-    push 14            ; Push interrupt number
-    jmp isr_common_handler
-
-; ISRs 15 to 31 (no error code pushed by CPU)
-isr15:
-    cli
-    push 0
-    push 15
-    jmp isr_common_handler
-
-isr16:
-    cli
-    push 0
-    push 16
-    jmp isr_common_handler
-
-isr17:
-    cli
-    push 0
-    push 17
-    jmp isr_common_handler
-
-isr18:
-    cli
-    push 0
-    push 18
-    jmp isr_common_handler
-
-isr19:
-    cli
-    push 0
-    push 19
-    jmp isr_common_handler
-
-isr20:
-    cli
-    push 0
-    push 20
-    jmp isr_common_handler
-
-
-
-
+; isr.asm - ISR assembly stubs
+
+global isr0, isr1, isr2, isr3, isr4, isr5, isr6, isr7, isr8, isr9, isr10, isr11, isr12, isr13, isr14, isr15
+global isr16, isr17, isr18, isr19, isr20, isr21, isr22, isr23, isr24, isr25, isr26, isr27, isr28, isr29, isr30, isr31
+extern isr_common_handler
+
+section .text
+
+; ISRs 0 to 13 (no error code pushed by CPU)
+isr0:
+    cli
+    push 0             ; Push error code (none for isr0)
+    push 0             ; Push interrupt number
+    jmp isr_common_handler
+
+isr1:
+    cli
+    push 0
+    push 1
+    jmp isr_common_handler
+
+isr2:
+    cli
+    push 0
+    push 2
+    jmp isr_common_handler
+
+isr3:
+    cli
+    push 0
+    push 3
+    jmp isr_common_handler
+
+isr4:
+    cli
+    push 0
+    push 4
+    jmp isr_common_handler
+
+isr5:
+    cli
+    push 0
+    push 5
+    jmp isr_common_handler
+
+isr6:
+    cli
+    push 0
+    push 6
+    jmp isr_common_handler
+
+isr7:
+    cli
+    push 0
+    push 7
+    jmp isr_common_handler
+
+isr8:
+    cli
+    push 0
+    push 8
+    jmp isr_common_handler
+
+isr9:
+    cli
+    push 0
+    push 9
+    jmp isr_common_handler
+
+isr10:
+    cli
+    push 0
+    push 10
+    jmp isr_common_handler
+
+isr11:
+    cli
+    push 0
+    push 11
+    jmp isr_common_handler
+
+isr12:
+    cli
+    push 0
+    push 12
+    jmp isr_common_handler
+
+isr13:
+    cli
+    push 0
+    push 13
+    jmp isr_common_handler
+
+; ISR 14 (Page Fault) requires error code pushed by CPU
+isr14:
+    cli
+    push 14            ; Push interrupt number
+    jmp isr_common_handler
+
+; ISRs 15 to 31 (no error code pushed by CPU)
+isr15:
+    cli
+    push 0
+    push 15
+    jmp isr_common_handler
+
+isr16:
+    cli
+    push 0
+    push 16
+    jmp isr_common_handler
+
+isr17:
+    cli
+    push 0
+    push 17
+    jmp isr_common_handler
+
+isr18:
+    cli
+    push 0
+    push 18
+    jmp isr_common_handler
+
+isr19:
+    cli
+    push 0
+    push 19
+    jmp isr_common_handler
+
+isr20:
+    cli
+    push 0
+    push 20
+    jmp isr_common_handler
+
+
+
+

src/impl/x86_64/driver/disk_io.c

@@ -1,43 +1,43 @@
-// disk_io.c
-
-#include "disk_io.h"
-#include "print.h"  // Assuming you have a function for kernel printing
-
-#define SECTOR_SIZE 512
-
-// Function to read sectors from disk
-int disk_read(uint32_t lba, void *buffer, uint32_t size) {
-    // lba: logical block address
-    // buffer: where to store the read data
-    // size: number of bytes to read
-
-    if (size % SECTOR_SIZE != 0) {
-        printf("Read size must be a multiple of 512 bytes\n");
-        return -1;
-    }
-
-    for (uint32_t i = 0; i < size / SECTOR_SIZE; i++) {
-        // Placeholder for actual disk sector read. Replace with proper implementation
-        if (!bios_read_sector(lba + i, buffer + (i * SECTOR_SIZE))) {
-            printf("Error reading sector from disk\n");
-            return -1;
-        }
-    }
-
-    return 0;
-}
-
-// Placeholder function to simulate reading sectors from the disk
-// Replace this with actual disk reading logic depending on the platform
-int bios_read_sector(uint32_t lba, void *buffer) {
-    // Simulate disk sector read
-    // In an actual kernel, you'd use interrupts or other mechanisms to read from disk
-
-    // For now, just zero out the buffer to simulate
-    for (int i = 0; i < SECTOR_SIZE; i++) {
-        ((uint8_t*)buffer)[i] = 0;  // Fill buffer with zeros
-    }
-
-    return 1;  // Success
-}
-
+// disk_io.c
+
+#include "disk_io.h"
+#include "print.h"  // Assuming you have a function for kernel printing
+
+#define SECTOR_SIZE 512
+
+// Function to read sectors from disk
+int disk_read(uint32_t lba, void *buffer, uint32_t size) {
+    // lba: logical block address
+    // buffer: where to store the read data
+    // size: number of bytes to read
+
+    if (size % SECTOR_SIZE != 0) {
+        printf("Read size must be a multiple of 512 bytes\n");
+        return -1;
+    }
+
+    for (uint32_t i = 0; i < size / SECTOR_SIZE; i++) {
+        // Placeholder for actual disk sector read. Replace with proper implementation
+        if (!bios_read_sector(lba + i, buffer + (i * SECTOR_SIZE))) {
+            printf("Error reading sector from disk\n");
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+// Placeholder function to simulate reading sectors from the disk
+// Replace this with actual disk reading logic depending on the platform
+int bios_read_sector(uint32_t lba, void *buffer) {
+    // Simulate disk sector read
+    // In an actual kernel, you'd use interrupts or other mechanisms to read from disk
+
+    // For now, just zero out the buffer to simulate
+    for (int i = 0; i < SECTOR_SIZE; i++) {
+        ((uint8_t*)buffer)[i] = 0;  // Fill buffer with zeros
+    }
+
+    return 1;  // Success
+}
+

src/impl/x86_64/driver/print.c

@@ -334,6 +334,48 @@ int my_sscanf(const char *input, const char *format, char *output) {
     return match_count;
 }
 
+snprintf(char* buffer, size_t size, const char* format, ...) {
+    va_list args;
+    va_start(args, format);
+
+    const char* traverse = format;
+    size_t written = 0;
+
+    while (*traverse && written < size - 1) {
+        if (*traverse == '%' && *(traverse + 1)) {
+            traverse++;
+            if (*traverse == 's') {
+                const char* str = va_arg(args, const char*);
+                while (*str && written < size - 1) {
+                    buffer[written++] = *str++;
+                }
+            } else if (*traverse == 'd') {
+                int num = va_arg(args, int);
+                char num_buffer[16];
+                int num_len = 0;
+                if (num < 0) {
+                    if (written < size - 1) buffer[written++] = '-';
+                    num = -num;
+                }
+                do {
+                    num_buffer[num_len++] = '0' + (num % 10);
+                    num /= 10;
+                } while (num > 0);
+                while (num_len > 0 && written < size - 1) {
+                    buffer[written++] = num_buffer[--num_len];
+                }
+            }
+        } else {
+            buffer[written++] = *traverse;
+        }
+        traverse++;
+    }
+
+    buffer[written] = '\0';
+    va_end(args);
+    return written;
+}
+
 
 void printf(const char* format, ...) {
     va_list args;

src/impl/x86_64/driver/vector.c

@@ -1,80 +1,80 @@
-#include "vector.h"
-
-// Initial capacity for a new vector
-#define VECTOR_INITIAL_CAPACITY 4
-
-// Create a new vector
-vector* vector_create() {
-    vector* v = (vector*)malloc(sizeof(vector));
-    if (!v) return NULL; // Return NULL if allocation fails
-
-    v->capacity = VECTOR_INITIAL_CAPACITY;
-    v->size = 0;
-    v->items = (void**)malloc(sizeof(void*) * v->capacity);
-    if (!v->items) {
-        free(v); // Free the vector if item allocation fails
-        return NULL;
-    }
-
-    return v;
-}
-
-// Destroy the vector and free allocated memory
-void vector_destroy(vector* v) {
-    if (v) {
-        free(v->items);
-        free(v);
-    }
-}
-
-// Push an item to the back of the vector
-int vector_push_back(vector* v, void* item) {
-    // Resize the vector if it's full
-    if (v->size == v->capacity) {
-        if (vector_resize(v, v->capacity * 2) != 0) {
-            return -1; // Return -1 on failure to resize
-        }
-    }
-
-    v->items[v->size++] = item; // Add the new item
-    return 0; // Success
-}
-
-// Get the item at a specific index
-void* vector_get(vector* v, size_t index) {
-    if (index >= v->size) return NULL; // Return NULL if index is out of bounds
-    return v->items[index];
-}
-
-// Set an item at a specific index
-int vector_set(vector* v, size_t index, void* item) {
-    if (index >= v->size) return -1; // Return -1 if index is out of bounds
-    v->items[index] = item;
-    return 0; // Success
-}
-
-// Get the size of the vector
-size_t vector_size(vector* v) {
-    return v->size;
-}
-
-// Resize the vector's internal array
-int vector_resize(vector* v, size_t new_capacity) {
-    // Allocate new memory for the resized array
-    void** new_items = (void**)malloc(sizeof(void*) * new_capacity);
-    if (!new_items) return -1; // Return -1 on failure
-
-    // Copy the old items into the new array
-    for (size_t i = 0; i < v->size; i++) {
-        new_items[i] = v->items[i];
-    }
-
-    // Free the old memory
-    free(v->items);
-
-    // Update the vector's internal state
-    v->items = new_items;
-    v->capacity = new_capacity;
-
-    return 0; // Success
-}
+#include "vector.h"
+
+// Initial capacity for a new vector
+#define VECTOR_INITIAL_CAPACITY 4
+
+// Create a new vector
+vector* vector_create() {
+    vector* v = (vector*)malloc(sizeof(vector));
+    if (!v) return NULL; // Return NULL if allocation fails
+
+    v->capacity = VECTOR_INITIAL_CAPACITY;
+    v->size = 0;
+    v->items = (void**)malloc(sizeof(void*) * v->capacity);
+    if (!v->items) {
+        free(v); // Free the vector if item allocation fails
+        return NULL;
+    }
+
+    return v;
+}
+
+// Destroy the vector and free allocated memory
+void vector_destroy(vector* v) {
+    if (v) {
+        free(v->items);
+        free(v);
+    }
+}
+
+// Push an item to the back of the vector
+int vector_push_back(vector* v, void* item) {
+    // Resize the vector if it's full
+    if (v->size == v->capacity) {
+        if (vector_resize(v, v->capacity * 2) != 0) {
+            return -1; // Return -1 on failure to resize
+        }
+    }
+
+    v->items[v->size++] = item; // Add the new item
+    return 0; // Success
+}
+
+// Get the item at a specific index
+void* vector_get(vector* v, size_t index) {
+    if (index >= v->size) return NULL; // Return NULL if index is out of bounds
+    return v->items[index];
+}
+
+// Set an item at a specific index
+int vector_set(vector* v, size_t index, void* item) {
+    if (index >= v->size) return -1; // Return -1 if index is out of bounds
+    v->items[index] = item;
+    return 0; // Success
+}
+
+// Get the size of the vector
+size_t vector_size(vector* v) {
+    return v->size;
+}
+
+// Resize the vector's internal array
+int vector_resize(vector* v, size_t new_capacity) {
+    // Allocate new memory for the resized array
+    void** new_items = (void**)malloc(sizeof(void*) * new_capacity);
+    if (!new_items) return -1; // Return -1 on failure
+
+    // Copy the old items into the new array
+    for (size_t i = 0; i < v->size; i++) {
+        new_items[i] = v->items[i];
+    }
+
+    // Free the old memory
+    free(v->items);
+
+    // Update the vector's internal state
+    v->items = new_items;
+    v->capacity = new_capacity;
+
+    return 0; // Success
+}

src/impl/x86_64/game.c

@@ -1,185 +1,185 @@
-#include "game.h"
-#include "print.h"
-#include "keydriver.h"
-#include "strings.h"
-#include "stdint.h"
-
-// Define constants for the game
-#define ROOM_COUNT 5
-#define INVENTORY_SIZE 5
-
-// Global variable to hold the game state
-static GameState game_state;
-
-// Room descriptions and connected rooms
-typedef struct {
-    const char* description;
-    int north;
-    int south;
-    int east;
-    int west;
-} Room;
-
-static const Room rooms[ROOM_COUNT] = {
-    { "You are in a dark forest. There are paths to the north and east.", 1, -1, 2, -1 },
-    { "You are on a beach. There is a cave to the west.", -1, 0, -1, 3 },
-    { "You are inside a cave. It’s damp and dark.", -1, -1, -1, 0 },
-    { "You are in a small village. There's a shop to the north and a forest to the east.", 4, -1, -1, -1 },
-    { "You are in a shop filled with various items. The village is to the south.", -1, 3, -1, -1 }
-};
-
-// Player's inventory
-static const char* inventory[INVENTORY_SIZE];
-static int inventory_count = 0;
-
-// Command buffer
-static char commandBuffer[MAX_COMMAND_LENGTH];
-static size_t commandLength = 0;
-
-bool keydown = false;
-
-// Function to handle user input commands
-void handle_command(const char* command) {
-    
-    
-    game_clear();
-    
-    
-    if (strcmp(command, "look") == 0) {
-        printf(rooms[game_state.current_room].description);
-        printf("\n");
-    } else if (strcmp(command, "north") == 0) {
-        if (rooms[game_state.current_room].north != -1) {
-            game_state.current_room = rooms[game_state.current_room].north;
-            printf("You walk north.\n");
-            printf("%s\n", rooms[game_state.current_room].description);
-        } else {
-            printf("You can't go that way.\n");
-        }
-    } else if (strcmp(command, "south") == 0) {
-        if (rooms[game_state.current_room].south != -1) {
-            game_state.current_room = rooms[game_state.current_room].south;
-            printf("You walk south.\n");
-            printf("%s\n", rooms[game_state.current_room].description);
-        } else {
-            printf("You can't go that way.\n");
-        }
-    } else if (strcmp(command, "east") == 0) {
-        if (rooms[game_state.current_room].east != -1) {
-            game_state.current_room = rooms[game_state.current_room].east;
-            printf("You walk east.\n");
-            printf("%s\n", rooms[game_state.current_room].description);
-        } else {
-            printf("You can't go that way.\n");
-        }
-    } else if (strcmp(command, "west") == 0) {
-        if (rooms[game_state.current_room].west != -1) {
-            game_state.current_room = rooms[game_state.current_room].west;
-            printf("You walk west.\n");
-            printf("%s\n", rooms[game_state.current_room].description);
-        } else {
-            printf("You can't go that way.\n");
-        }
-    } else if (strcmp(command, "inventory") == 0) {
-        printf("You are carrying:\n");
-        for (int i = 0; i < inventory_count; ++i) {
-            printf("- %s\n", inventory[i]);
-        }
-        if (inventory_count == 0) {
-            printf("Nothing.\n");
-        }
-    } else if (strcmp(command, "take key") == 0) {
-        if (game_state.current_room == 1) {
-            if (inventory_count < INVENTORY_SIZE) {
-                inventory[inventory_count++] = "key";
-                printf("You picked up a key.\n");
-            } else {
-                printf("Your inventory is full.\n");
-            }
-        } else {
-            printf("There is no key here.\n");
-        }
-    } else if (strcmp(command, "use key") == 0) {
-        bool has_key = false;
-        for (int i = 0; i < inventory_count; ++i) {
-            if (strcmp(inventory[i], "key") == 0) {
-                has_key = true;
-                break;
-            }
-        }
-        if (has_key && game_state.current_room == 2) {
-            printf("You unlock the door in the cave and find a treasure!\n");
-            game_state.game_active = false;  // End the game
-        } else {
-            printf("You can't use the key here.\n");
-        }
-    } else if (strcmp(command, "quit") == 0) {
-        printf("You quit the game.\n");
-        game_state.game_active = false;
-    } else {
-        printf("Unknown command.\n");
-    }
-}
-
-// Function to print the prompt for the player
-void print_prompt() {
-    printf(" > ");
-}
-
-const void game_clear()
-{
-    print_set_color(PRINT_COLOR_WHITE, PRINT_COLOR_BLACK); // Set text color
-
-    move_print_cursor(0, 0);
-    move_cursor(0, 0);
-    print_clear();
-}
-
-// Function to initialize and run the game
-void create_game() {
-    // Initialize the game state
-    game_state.current_room = 0;
-    game_state.game_active = true;
-
-    printf("Welcome to the text adventure game!\n");
-    printf("Type 'look' to see where you are, 'north', 'south', 'east', 'west' to move, or 'quit' to exit.\n");
-    printf("You can 'take key' or 'use key' in the appropriate places.\n");
-
-    print_prompt();
-
-    // Main game loop
-    while (game_state.game_active) {
-        char key = read_key();  // Get key input
-        
-        if (key != 0) {
-            if (!keydown) {
-                if (key == 10) {  // Enter key
-                    printf("\n");
-                    commandBuffer[commandLength] = '\0';  // Null-terminate the command
-                    handle_command(commandBuffer);  // Process the command
-                    commandLength = 0;  // Reset command buffer
-                    if (game_state.game_active) {
-                        print_prompt();  // Print prompt for the next command
-                    }
-                } else if (key == 8) {  // Backspace key
-                    if (commandLength > 0) {
-                        commandLength--;
-                        offset_print_cursor(-1, 0);
-                        print_char(' ');  // Overwrite the character
-                        offset_print_cursor(-1, 0);
-                    }
-                } else if (key >= 32 && key <= 126) {  // Printable characters
-                    if (commandLength < MAX_COMMAND_LENGTH - 1) {
-                        commandBuffer[commandLength++] = key;
-                        print_char(key);  // Display the key on the screen
-                    }
-                }
-                keydown = true;
-            }
-        } else {
-            keydown = false;
-        }
-    }
-
-    printf("Thanks for playing!\n");
-}
+#include "game.h"
+#include "print.h"
+#include "keydriver.h"
+#include "strings.h"
+#include "stdint.h"
+
+// Define constants for the game
+#define ROOM_COUNT 5
+#define INVENTORY_SIZE 5
+
+// Global variable to hold the game state
+static GameState game_state;
+
+// Room descriptions and connected rooms
+typedef struct {
+    const char* description;
+    int north;
+    int south;
+    int east;
+    int west;
+} Room;
+
+static const Room rooms[ROOM_COUNT] = {
+    { "You are in a dark forest. There are paths to the north and east.", 1, -1, 2, -1 },
+    { "You are on a beach. There is a cave to the west.", -1, 0, -1, 3 },
+    { "You are inside a cave. It’s damp and dark.", -1, -1, -1, 0 },
+    { "You are in a small village. There's a shop to the north and a forest to the east.", 4, -1, -1, -1 },
+    { "You are in a shop filled with various items. The village is to the south.", -1, 3, -1, -1 }
+};
+
+// Player's inventory
+static const char* inventory[INVENTORY_SIZE];
+static int inventory_count = 0;
+
+// Command buffer
+static char commandBuffer[MAX_COMMAND_LENGTH];
+static size_t commandLength = 0;
+
+bool keydown = false;
+
+// Function to handle user input commands
+void handle_command(const char* command) {
+    
+    
+    game_clear();
+    
+    
+    if (strcmp(command, "look") == 0) {
+        printf(rooms[game_state.current_room].description);
+        printf("\n");
+    } else if (strcmp(command, "north") == 0) {
+        if (rooms[game_state.current_room].north != -1) {
+            game_state.current_room = rooms[game_state.current_room].north;
+            printf("You walk north.\n");
+            printf("%s\n", rooms[game_state.current_room].description);
+        } else {
+            printf("You can't go that way.\n");
+        }
+    } else if (strcmp(command, "south") == 0) {
+        if (rooms[game_state.current_room].south != -1) {
+            game_state.current_room = rooms[game_state.current_room].south;
+            printf("You walk south.\n");
+            printf("%s\n", rooms[game_state.current_room].description);
+        } else {
+            printf("You can't go that way.\n");
+        }
+    } else if (strcmp(command, "east") == 0) {
+        if (rooms[game_state.current_room].east != -1) {
+            game_state.current_room = rooms[game_state.current_room].east;
+            printf("You walk east.\n");
+            printf("%s\n", rooms[game_state.current_room].description);
+        } else {
+            printf("You can't go that way.\n");
+        }
+    } else if (strcmp(command, "west") == 0) {
+        if (rooms[game_state.current_room].west != -1) {
+            game_state.current_room = rooms[game_state.current_room].west;
+            printf("You walk west.\n");
+            printf("%s\n", rooms[game_state.current_room].description);
+        } else {
+            printf("You can't go that way.\n");
+        }
+    } else if (strcmp(command, "inventory") == 0) {
+        printf("You are carrying:\n");
+        for (int i = 0; i < inventory_count; ++i) {
+            printf("- %s\n", inventory[i]);
+        }
+        if (inventory_count == 0) {
+            printf("Nothing.\n");
+        }
+    } else if (strcmp(command, "take key") == 0) {
+        if (game_state.current_room == 1) {
+            if (inventory_count < INVENTORY_SIZE) {
+                inventory[inventory_count++] = "key";
+                printf("You picked up a key.\n");
+            } else {
+                printf("Your inventory is full.\n");
+            }
+        } else {
+            printf("There is no key here.\n");
+        }
+    } else if (strcmp(command, "use key") == 0) {
+        bool has_key = false;
+        for (int i = 0; i < inventory_count; ++i) {
+            if (strcmp(inventory[i], "key") == 0) {
+                has_key = true;
+                break;
+            }
+        }
+        if (has_key && game_state.current_room == 2) {
+            printf("You unlock the door in the cave and find a treasure!\n");
+            game_state.game_active = false;  // End the game
+        } else {
+            printf("You can't use the key here.\n");
+        }
+    } else if (strcmp(command, "quit") == 0) {
+        printf("You quit the game.\n");
+        game_state.game_active = false;
+    } else {
+        printf("Unknown command.\n");
+    }
+}
+
+// Function to print the prompt for the player
+void print_prompt() {
+    printf(" > ");
+}
+
+const void game_clear()
+{
+    print_set_color(PRINT_COLOR_WHITE, PRINT_COLOR_BLACK); // Set text color
+
+    move_print_cursor(0, 0);
+    move_cursor(0, 0);
+    print_clear();
+}
+
+// Function to initialize and run the game
+void create_game() {
+    // Initialize the game state
+    game_state.current_room = 0;
+    game_state.game_active = true;
+
+    printf("Welcome to the text adventure game!\n");
+    printf("Type 'look' to see where you are, 'north', 'south', 'east', 'west' to move, or 'quit' to exit.\n");
+    printf("You can 'take key' or 'use key' in the appropriate places.\n");
+
+    print_prompt();
+
+    // Main game loop
+    while (game_state.game_active) {
+        char key = read_key();  // Get key input
+        
+        if (key != 0) {
+            if (!keydown) {
+                if (key == 10) {  // Enter key
+                    printf("\n");
+                    commandBuffer[commandLength] = '\0';  // Null-terminate the command
+                    handle_command(commandBuffer);  // Process the command
+                    commandLength = 0;  // Reset command buffer
+                    if (game_state.game_active) {
+                        print_prompt();  // Print prompt for the next command
+                    }
+                } else if (key == 8) {  // Backspace key
+                    if (commandLength > 0) {
+                        commandLength--;
+                        offset_print_cursor(-1, 0);
+                        print_char(' ');  // Overwrite the character
+                        offset_print_cursor(-1, 0);
+                    }
+                } else if (key >= 32 && key <= 126) {  // Printable characters
+                    if (commandLength < MAX_COMMAND_LENGTH - 1) {
+                        commandBuffer[commandLength++] = key;
+                        print_char(key);  // Display the key on the screen
+                    }
+                }
+                keydown = true;
+            }
+        } else {
+            keydown = false;
+        }
+    }
+
+    printf("Thanks for playing!\n");
+}

src/impl/x86_64/strings.c

@@ -89,4 +89,14 @@ int strncmp(const char *s1, const char *s2, size_t n) {
     } else {
         return (*(unsigned char *)s1 - *(unsigned char *)s2);
     }
-}
+}
+
+char* strchr(const char* str, int ch) {
+    while (*str) {
+        if (*str == (char)ch) {
+            return (char*)str;
+        }
+        str++;
+    }
+    return NULL;
+}

src/intf/basic.h

@@ -0,0 +1,32 @@
+#ifndef BASIC_INTERPRETER_H
+#define BASIC_INTERPRETER_H
+
+#include "stdint.h"
+#include "stddef.h"
+
+#define MAX_LINE_LENGTH 128
+#define MAX_VARIABLES 32
+
+typedef struct {
+    char name[16];
+    int value;
+    char* str_value;
+} Variable;
+
+typedef struct {
+    Variable variables[MAX_VARIABLES];
+    size_t variable_count;
+    int running;
+} InterpreterState;
+
+// Initialize the interpreter state
+void init_state(InterpreterState* state);
+
+// Execute a single line of code in the context of a state
+void execute_line(InterpreterState* state, const char* line);
+
+// Utility to evaluate an expression (exposed for potential reuse)
+const char* evaluate_expression(InterpreterState* state, const char* expr);
+
+
+#endif // BASIC_INTERPRETER_H

src/intf/disk_io.h

@@ -1,17 +1,17 @@
-// disk_io.h
-
-#ifndef DISK_IO_H
-#define DISK_IO_H
-
-#include <stdint.h>
-
-// Read sectors from the disk
-int disk_read(uint32_t lba, void *buffer, uint32_t size);
-
-// Optional: Write sectors to the disk (not implemented)
-int disk_write(uint32_t lba, const void *buffer, uint32_t size);
-
-
-int bios_read_sector(uint32_t lba, void *buffer);
-
+// disk_io.h
+
+#ifndef DISK_IO_H
+#define DISK_IO_H
+
+#include <stdint.h>
+
+// Read sectors from the disk
+int disk_read(uint32_t lba, void *buffer, uint32_t size);
+
+// Optional: Write sectors to the disk (not implemented)
+int disk_write(uint32_t lba, const void *buffer, uint32_t size);
+
+
+int bios_read_sector(uint32_t lba, void *buffer);
+
 #endif // DISK_IO_H

src/intf/game.h

@@ -1,25 +1,25 @@
-#ifndef GAME_H
-#define GAME_H
-
-#include "stdint.h"
-
-
-// Define the maximum length of a command
-#define MAX_COMMAND_LENGTH 128
-
-// Game state structure
-typedef struct {
-    int current_room;
-    bool game_active;
-} GameState;
-
-// Function to initialize and run the game
-void create_game();
-
-// Function to handle the command input by the player
-void handle_command(const char* command);
-
-// Function to print the current prompt
-void print_prompt();
-
-#endif
+#ifndef GAME_H
+#define GAME_H
+
+#include "stdint.h"
+
+
+// Define the maximum length of a command
+#define MAX_COMMAND_LENGTH 128
+
+// Game state structure
+typedef struct {
+    int current_room;
+    bool game_active;
+} GameState;
+
+// Function to initialize and run the game
+void create_game();
+
+// Function to handle the command input by the player
+void handle_command(const char* command);
+
+// Function to print the current prompt
+void print_prompt();
+
+#endif

src/intf/print.h

@@ -29,6 +29,7 @@ enum {
 };
 
 void sscanf(const char *str, const char *format, char *filename, char *content);
+snprintf(char* buffer, size_t size, const char* format, ...);
 int my_sscanf(const char *input, const char *format, char *output);
 void print_clear();
 void print_char(char character);

src/intf/strings.h

@@ -5,8 +5,9 @@
 int strcmp(const char *str1, const char *str2);
 size_t strlen(const char *str);
 char *strncpy(char *dest, const char *src, size_t n);
-int int_strncmp(const char* s1, const char* s2, size_t n);
+int int_strncmp(const char *s1, const char *s2, size_t n);
 void strcpy(char *dest, const char *src);
-char* strrchr(const char* str, char ch);
+char *strrchr(const char *str, char ch);
 
-int strncmp(const char *s1, const char *s2, size_t n);
+int strncmp(const char *s1, const char *s2, size_t n);
+char *strchr(const char *str, int ch);

src/intf/vector.h

@@ -1,22 +1,22 @@
-#ifndef VECTOR_H
-#define VECTOR_H
-
-#include <stddef.h>
-
-// Define the vector structure
-typedef struct {
-    void** items;     // Pointer to the array of items
-    size_t capacity;  // Maximum number of items the vector can hold
-    size_t size;      // Current number of items in the vector
-} vector;
-
-// Function prototypes
-vector* vector_create();
-void vector_destroy(vector* v);
-int vector_push_back(vector* v, void* item);
-void* vector_get(vector* v, size_t index);
-int vector_set(vector* v, size_t index, void* item);
-size_t vector_size(vector* v);
-int vector_resize(vector* v, size_t new_capacity);
-
-#endif
+#ifndef VECTOR_H
+#define VECTOR_H
+
+#include <stddef.h>
+
+// Define the vector structure
+typedef struct {
+    void** items;     // Pointer to the array of items
+    size_t capacity;  // Maximum number of items the vector can hold
+    size_t size;      // Current number of items in the vector
+} vector;
+
+// Function prototypes
+vector* vector_create();
+void vector_destroy(vector* v);
+int vector_push_back(vector* v, void* item);
+void* vector_get(vector* v, size_t index);
+int vector_set(vector* v, size_t index, void* item);
+size_t vector_size(vector* v);
+int vector_resize(vector* v, size_t new_capacity);
+
+#endif