logging_implementation

main_logging.c

@@ -0,0 +1,145 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <termios.h>
+
+#define MAX_SIZE 1024
+#define HISTORY_SIZE 10
+
+// Global variable for termios
+struct termios orig_termios;
+
+// Terminal input helpers
+void EnableRawMode(struct termios* orig_termios) {
+    struct termios raw = *orig_termios;
+    raw.c_lflag &= ~(ECHO | ICANON); // Disable echo and canonical mode
+    tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw);
+}
+
+void DisableRawMode(struct termios* orig_termios) {
+    tcsetattr(STDIN_FILENO, TCSAFLUSH, orig_termios);
+}
+
+// Wrapper function to pass DisableRawMode with argument
+void DisableRawModeWrapper() {
+    DisableRawMode(&orig_termios);
+}
+
+int LogCommandHistory(char* buf, char** command_log, int* n) {
+    int index = *n % HISTORY_SIZE;
+    int prev_index = (*n == 0) ? HISTORY_SIZE - 1 : (*n - 1) % HISTORY_SIZE;
+
+    if (command_log[prev_index] != NULL && strcmp(buf, command_log[prev_index]) == 0) {
+        return 0;
+    }
+    if (command_log[index] != NULL) {
+        free(command_log[index]);
+    }
+
+    command_log[index] = strdup(buf);
+    (*n)++;
+
+    return 0;
+}
+
+
+void FreeCommandHistory(char** command_log, int n) {
+    for (int i = 0; i < n; i++) {
+        free(command_log[i]);
+    }
+}
+
+// Get input with arrow key navigation
+void GetInputWithHistory(char* buf, char** command_log, int n) {
+    int index = n % HISTORY_SIZE;
+    int history_counter = 0;
+    int pos = 0;
+    char c;
+
+    while (1) {
+        c = getchar();
+
+
+        if (c == '\n') { // Enter key
+            buf[pos] = '\0';
+            printf("\n");
+            return;
+        } else if (c == 127 || c == '\b') { // Backspace
+            if (pos > 0) {
+                pos--;
+                buf[pos] = '\0';
+                printf("\b \b");
+            }
+        } else if (c == '\033') { // Inputting arrow keys
+            getchar();           // Skipping the first '[' character
+            char arrow = getchar();
+            if (arrow == 'A' && history_counter < HISTORY_SIZE) { // Up arrow
+                int prev_index = (index == 0) ? HISTORY_SIZE - 1 : (index - 1) % HISTORY_SIZE;
+                if (command_log[prev_index] != NULL) {
+                    index = (index == 0) ? HISTORY_SIZE - 1 : index - 1; // Decrease the index
+                    history_counter++;
+
+                    strcpy(buf, command_log[index]);
+                    printf("\33[2K\r"); // Clear line
+                    printf("[%s] $ %s", getcwd(NULL, 0), buf);
+                    pos = strlen(buf);
+                }
+            } else if (arrow == 'B') { // Down arrow
+                if (history_counter > 1) {
+                    index = (index + 1) % HISTORY_SIZE;
+                    history_counter--;
+
+                    strcpy(buf, command_log[index]);
+                    printf("\33[2K\r"); // Clear line
+                    printf("[%s] $ %s", getcwd(NULL, 0), buf);
+                    pos = strlen(buf);
+                } else if (history_counter == 1) {
+                    history_counter--;
+                    index++;
+
+                    buf[0] = '\0'; // Clear buffer
+                    printf("\33[2K\r"); // Clear line
+                    printf("[%s] $ ", getcwd(NULL, 0));
+                    pos = 0;
+                }
+            }
+        } else { // Regular character
+            if (pos < MAX_SIZE - 1) {
+                buf[pos++] = c;
+                buf[pos] = '\0';
+                printf("%c", c);
+            }
+        }
+    }
+}
+
+int main() {
+    char buf[MAX_SIZE];
+    char* command_log[HISTORY_SIZE] = {NULL};
+    int n = 0;
+
+    tcgetattr(STDIN_FILENO, &orig_termios);
+
+    // Register atexit to call DisableRawModeWrapper when the program exits
+    atexit(DisableRawModeWrapper);
+
+    while (1) {
+        printf("[%s] $ ", getcwd(NULL, 0));
+
+        // Enable raw mode for manual input handling
+        EnableRawMode(&orig_termios);
+        GetInputWithHistory(buf, command_log, n);
+        DisableRawMode(&orig_termios);
+
+        if (strcmp(buf, "exit") == 0) {
+            break;
+        }
+
+        LogCommandHistory(buf, command_log, &n);
+        printf("Executed: %s\n", buf); // For testing, replace with actual command handling
+    }
+
+    FreeCommandHistory(command_log, n);
+    return 0;
+}