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This commit is contained in:
lzwdgc 2023-01-10 20:05:02 +03:00
parent 0b9304181d
commit 3e2c9ba25f
1 changed files with 15 additions and 13 deletions
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28
src/unpaker2/unpaker2.cpp
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@ -1,6 +1,6 @@
/*
* AIM mod_converter
* Copyright (C) 2015 lzwdgc
* AIM unpaker2
* Copyright (C) 2023 lzwdgc
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -69,14 +69,12 @@ struct stream {
primitives::templates2::mmap_file<uint8_t> &m;
uint8_t *p{m.p};
template <typename T>
operator T&() {
template <typename T> operator T&() {
auto &r = *(T*)p;
p += sizeof(T);
return r;
}
template <typename T>
auto span(size_t len) {
template <typename T> auto span(size_t len) {
auto s = std::span<T>((T*)p, len);
p += sizeof(T) * len;
return s;
@ -89,10 +87,15 @@ void unpack_file(path fn) {
pak p = s;
auto descs = s.span<file_description>(p.n_files);
auto segments = s.span<segment>(p.n_blocks);
std::vector<uint8_t> bbb;
bbb.resize((segments.size() + 1) * p.block_size * 4);
auto pp = bbb.data();
for (auto &&seg : segments) {
std::vector<uint8_t> decoded;
decoded.resize((segments.size() + 1) * p.block_size * 4);
auto pp = decoded.data();
int displaylen = 50;
int seglen = segments.size() / displaylen == 0 ? 1 : segments.size() / displaylen;
for (int i = 0; auto &&seg : segments) {
if (i++ % seglen == 0) {
std::cout << "#";
}
s.p = f.p + seg.offset;
uint32_t len = s;
switch (seg.algorithm) {
@ -160,8 +163,7 @@ void unpack_file(path fn) {
throw std::runtime_error{"compression unsupported: "s + std::to_string(seg.algorithm)};
}
}
pp = bbb.data();
std::cout << "\n";
auto dir = fn += ".dir2";
fs::create_directories(dir);
for (auto &&d : descs) {
@ -170,7 +172,7 @@ void unpack_file(path fn) {
std::cout << "unpacking " << fn << "\n";
primitives::templates2::mmap_file<uint8_t> f{fn, primitives::templates2::mmap_file<uint8_t>::rw{}};
f.alloc_raw(d.size);
memcpy(f.p, pp + d.offset, d.size);
memcpy(f.p, decoded.data() + d.offset, d.size);
}
}