implementation of jump_to_dir

interactions.c

@@ -378,7 +378,33 @@ void not_implemented(unsigned long passes, int index){
 	TODO;
 }
 void jump_to_dir(unsigned long passes, int index){
-	TODO;
+	(void)passes;
+
+	unsigned long len;
+	char *c = strchr(key_binding[index].black_magic, '/');
+	if (c) {
+		len = c - (char*)key_binding[index].black_magic;
+	} else {
+		len = strlen(key_binding[index].black_magic);
+	}
+
+	char *to_env = malloc(len + 1);
+	memcpy(to_env, key_binding[index].black_magic, len);
+	to_env[len] = '\0';
+	char *env = getenv(to_env + 1); /*+1 to remove the '$' prefix, freeing env always segfaults*/
+
+	if (env) {
+		char *path = malloc(strlen(key_binding[index].black_magic) + strlen(env) + 1);
+		memcpy(path, env, strlen(env));
+		memcpy(path + strlen(env), key_binding[index].black_magic + len, strlen(key_binding[index].black_magic)+1);
+		change_dir(path);
+		free(path);
+	} else {
+		change_dir(key_binding[index].black_magic);
+	}
+	free(to_env);
+
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY );
 }
 void order_by(unsigned long passes, int index){
 	(void)passes;