feature: log level on kprintf (color)

fix: kprintf now uses concatenated strings for the flag

src/shell/exec.c

@@ -32,19 +32,19 @@ static void help(void)
 {
 	const size_t padding = 15;
 
-	kprintf(0, "%s\n", BORDER);
-	kprintf(0, " %s\n", HEADER);
-	kprintf(0, "%s\n", BORDER);
+	kprintf("%s\n", BORDER);
+	kprintf(" %s\n", HEADER);
+	kprintf("%s\n", BORDER);
 
 	for (size_t i = 0; i < sizeof(commands) / sizeof(commands[0]); i++) {
-		kprintf(0, " %s", commands[i].name);
+		kprintf(" %s", commands[i].name);
 		for (size_t j = 0; j < (padding - strlen(commands[i].name));
 		     j++)
-			kprintf(0, " ");
-		kprintf(0, ": %s\n", commands[i].description);
+			kprintf(" ");
+		kprintf(": %s\n", commands[i].description);
 	}
 
-	kprintf(0, "%s\n", BORDER);
+	kprintf("%s\n", BORDER);
 }
 
 static void auto_complete(void)
@@ -63,7 +63,7 @@ static void auto_complete(void)
 		return;
 	for (size_t i = len; last_match[i]; i++) {
 		screen->line[i] = last_match[i];
-		kprintf(0, "%c", screen->line[i]);
+		kprintf("%c", screen->line[i]);
 	}
 }
 
@@ -89,7 +89,7 @@ static void read_line(void)
 			} else if (ev.scan_code == KEY_TAB && i) {
 				auto_complete();
 			} else if (ev.c && i < size - 1) {
-				kprintf(0, "%c", ev.c);
+				kprintf("%c", ev.c);
 				buf[i++] = ev.c;
 			}
 			if (i >= size)
@@ -97,14 +97,14 @@ static void read_line(void)
 		}
 		prev_scan_code = ev.scan_code;
 	}
-	kprintf(0, "\n");
+	kprintf("\n");
 	screen->line[i] = '\0';
 }
 
 void shell_init(void)
 {
 	while (1) {
-		kprintf(0, PROMPT);
+		kprintf(PROMPT);
 		read_line();
 		bool invalid = true;
 		for (int i = 0; i < NB_CMDS; i++) {
@@ -115,7 +115,7 @@ void shell_init(void)
 			}
 		}
 		if (invalid && screen->line[0])
-			kprintf(0, "invalid command: %s\n", screen->line);
+			kprintf("invalid command: %s\n", screen->line);
 		memset(screen->line, '\0', sizeof(screen->line));
 	}
 }

src/shell/misc_cmds.c

@@ -3,5 +3,5 @@
 
 void merdella(void)
 {
-	kprintf(0, POOP);
+	kprintf(POOP);
 }