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/*************************************************************************/
/* pck_packer.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "pck_packer.h"
#include "core/io/file_access_pack.h" // PACK_HEADER_MAGIC, PACK_FORMAT_VERSION
#include "core/os/file_access.h"
#include "core/version.h"
static uint64_t _align(uint64_t p_n, int p_alignment) {
if (p_alignment == 0)
return p_n;
uint64_t rest = p_n % p_alignment;
if (rest == 0)
return p_n;
else
return p_n + (p_alignment - rest);
};
static void _pad(FileAccess *p_file, int p_bytes) {
for (int i = 0; i < p_bytes; i++) {
p_file->store_8(0);
};
};
void PCKPacker::_bind_methods() {
ClassDB::bind_method(D_METHOD("pck_start", "pck_name", "alignment"), &PCKPacker::pck_start, DEFVAL(0));
ClassDB::bind_method(D_METHOD("add_file", "pck_path", "source_path"), &PCKPacker::add_file);
ClassDB::bind_method(D_METHOD("flush", "verbose"), &PCKPacker::flush, DEFVAL(false));
};
Error PCKPacker::pck_start(const String &p_file, int p_alignment) {
if (file != nullptr) {
memdelete(file);
}
file = FileAccess::open(p_file, FileAccess::WRITE);
ERR_FAIL_COND_V_MSG(!file, ERR_CANT_CREATE, "Can't open file to write: " + String(p_file) + ".");
alignment = p_alignment;
file->store_32(PACK_HEADER_MAGIC);
file->store_32(PACK_FORMAT_VERSION);
file->store_32(VERSION_MAJOR);
file->store_32(VERSION_MINOR);
file->store_32(VERSION_PATCH);
for (int i = 0; i < 16; i++) {
file->store_32(0); // reserved
};
files.clear();
return OK;
};
Error PCKPacker::add_file(const String &p_file, const String &p_src) {
FileAccess *f = FileAccess::open(p_src, FileAccess::READ);
if (!f) {
return ERR_FILE_CANT_OPEN;
};
File pf;
pf.path = p_file;
pf.src_path = p_src;
pf.size = f->get_len();
pf.offset_offset = 0;
files.push_back(pf);
f->close();
memdelete(f);
return OK;
};
Error PCKPacker::flush(bool p_verbose) {
ERR_FAIL_COND_V_MSG(!file, ERR_INVALID_PARAMETER, "File must be opened before use.");
// write the index
file->store_32(files.size());
for (int i = 0; i < files.size(); i++) {
file->store_pascal_string(files[i].path);
files.write[i].offset_offset = file->get_position();
file->store_64(0); // offset
file->store_64(files[i].size); // size
// # empty md5
file->store_32(0);
file->store_32(0);
file->store_32(0);
file->store_32(0);
};
uint64_t ofs = file->get_position();
ofs = _align(ofs, alignment);
_pad(file, ofs - file->get_position());
const uint32_t buf_max = 65536;
uint8_t *buf = memnew_arr(uint8_t, buf_max);
int count = 0;
for (int i = 0; i < files.size(); i++) {
FileAccess *src = FileAccess::open(files[i].src_path, FileAccess::READ);
uint64_t to_write = files[i].size;
while (to_write > 0) {
int read = src->get_buffer(buf, MIN(to_write, buf_max));
file->store_buffer(buf, read);
to_write -= read;
};
uint64_t pos = file->get_position();
file->seek(files[i].offset_offset); // go back to store the file's offset
file->store_64(ofs);
file->seek(pos);
ofs = _align(ofs + files[i].size, alignment);
_pad(file, ofs - pos);
src->close();
memdelete(src);
count += 1;
if (p_verbose && files.size() > 0) {
if (count % 100 == 0) {
printf("%i/%i (%.2f)\r", count, files.size(), float(count) / files.size() * 100);
fflush(stdout);
};
};
};
if (p_verbose)
printf("\n");
file->close();
memdelete_arr(buf);
return OK;
};
PCKPacker::~PCKPacker() {
if (file != nullptr) {
memdelete(file);
};
file = nullptr;
};
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