writing to restore file

src/rexbacklight.c

@@ -227,7 +227,7 @@ void do_get(const char* device){
 	if(return_value == RETVAL_INVALID_FILE && (!curr || !max)){
 		fprintf(stdout, "%s", device);
 	}else{
-		fprintf(stdout, "%-25s %.2f\n", device, get_brightness(brightness_file) / get_brightness(max_brightness_file) * 100);
+		fprintf(stdout, "%-25s %.2f\n", device, curr / max * 100);
 	}
 }
 
@@ -319,11 +319,11 @@ void individual_device_loop(struct arg_values* a){
 		}
 		return_value = individual_device_op(curr);
 		if(return_value == RETVAL_INTERNAL_ERROR){
-			rjp_free(root);
+			rjp_free_value(root);
 			return;
 		}
 	}
-	rjp_free(root);
+	rjp_free_value(root);
 }
 
 void process_restore_file(void){
@@ -339,7 +339,7 @@ void process_restore_file(void){
 		tmp.delta = rjp_value_dfloat(curr);
 		individual_device_op(&tmp);
 	}
-	rjp_free(root);
+	rjp_free_value(root);
 }
 
 //If no devices were specified, this function will run
@@ -390,6 +390,45 @@ void all_device_loop(struct string_array* device_names, struct arg_values* args)
 	}
 }
 
+void save_restore_file(struct string_array* devices){
+	RJP_value* root = rjp_init_json();
+	for(size_t i = 0;i < devices->size;++i){
+		if(chdir(devices->list[i])){
+			io_error_2(IO_ERROR_OPEN, IO_ERROR_DIR, device_dir, devices->list[i]);
+			return_value = RETVAL_INVALID_DIR;
+			continue;
+		}
+		size_t esc_name_len = rjp_escape_strlen(devices->list[i]);
+		char* esc_str = rjp_alloc(esc_name_len + 1);
+		rjp_escape_strcpy(esc_str, devices->list[i]);
+
+		float curr = get_brightness(brightness_file);
+		float max = get_brightness(max_brightness_file);
+		if(return_value == RETVAL_INVALID_FILE && (!curr || !max)){
+			rjp_add_member(root, 0, esc_str, 0, rjp_null());
+		}else{
+			rjp_add_member(root, 0, esc_str, 0, rjp_dfloat(curr/max*100));
+		}
+
+		if(chdir(device_dir)){
+			io_error(IO_ERROR_OPEN, IO_ERROR_DIR, device_dir);
+			return_value = RETVAL_INVALID_DIR;
+			rjp_free_value(root);
+			free(esc_str);
+			return;
+		}
+	}
+	char* tmp = rjp_to_json(root);
+	FILE* restf = fopen(restore_file, "w");
+	if(!restf){
+		io_error(IO_ERROR_OPEN, IO_ERROR_FILE, restore_file);
+	}else{
+		fprintf(restf, "//File generated by rexbacklight\n%s\n", tmp);
+		fclose(restf);
+	}
+	rjp_free(tmp);
+	rjp_free_value(root);
+}
 
 int main(int argc, char** argv){
 
@@ -450,6 +489,7 @@ int main(int argc, char** argv){
 	}else{
 		all_device_loop(&device_names, &args);
 	}
+	save_restore_file(&device_names);
 
 	CLEANUP();
 	return return_value;