godot/scene/resources/text_file.cpp

/*************************************************************************/
/*  text_file.cpp                                                        */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "text_file.h"

#include "core/os/file_access.h"

bool TextFile::has_text() const {
	return text != "";
}

String TextFile::get_text() const {
	return text;
}

void TextFile::set_text(const String &p_code) {
	text = p_code;
}

void TextFile::reload_from_file() {
	load_text(path);
}

Error TextFile::load_text(const String &p_path) {
	Vector<uint8_t> sourcef;
	Error err;
	FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);

	ERR_FAIL_COND_V_MSG(err, err, "Cannot open TextFile '" + p_path + "'.");

	uint64_t len = f->get_length();
	sourcef.resize(len + 1);
	uint8_t *w = sourcef.ptrw();
	uint64_t r = f->get_buffer(w, len);
	f->close();
	memdelete(f);
	ERR_FAIL_COND_V(r != len, ERR_CANT_OPEN);
	w[len] = 0;

	String s;
	ERR_FAIL_COND_V_MSG(s.parse_utf8((const char *)w), ERR_INVALID_DATA, "Script '" + p_path + "' contains invalid unicode (UTF-8), so it was not loaded. Please ensure that scripts are saved in valid UTF-8 unicode.");
	text = s;
	path = p_path;
	return OK;
}