Martin Michelsen
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
#include "PatchFileIndex.hh"
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#include <stdio.h>
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#include <string.h>
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#include <functional>
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#include <stdexcept>
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#include <phosg/Filesystem.hh>
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#include <phosg/Hash.hh>
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#include <phosg/Strings.hh>
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#include "Loggers.hh"
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using namespace std;
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PatchFileIndex::File::File() : crc32(0) { }
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void PatchFileIndex::File::load_data(const string& root_dir) {
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string full_path = root_dir + '/' + join(this->path_directories, "/") + '/' + this->name;
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auto f = fopen_unique(full_path, "rb");
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string file_data = load_file(full_path);
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this->data.reset(new string(move(file_data)));
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this->crc32 = ::crc32(this->data->data(), this->data->size());
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for (size_t x = 0; x < this->data->size(); x += 0x4000) {
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size_t chunk_bytes = min<size_t>(this->data->size() - x, 0x4000);
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this->chunk_crcs.emplace_back(::crc32(this->data->data() + x, chunk_bytes));
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}
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}
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PatchFileIndex::PatchFileIndex(const string& root_dir)
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: root_dir(root_dir) {
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vector<string> path_directories;
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function<void(const string&)> collect_dir = [&](const string& dir) -> void {
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path_directories.emplace_back(dir);
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string relative_dirs = join(path_directories, "/");
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string full_dir_path = root_dir + '/' + relative_dirs;
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patch_index_log.info("Listing directory %s", full_dir_path.c_str());
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for (const auto& item : list_directory(full_dir_path)) {
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// Skip invisible files (e.g. .DS_Store on macOS)
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if (starts_with(item, ".")) {
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continue;
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}
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string relative_item_path = relative_dirs + '/' + item;
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string full_item_path = root_dir + '/' + relative_item_path;
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if (isdir(full_item_path)) {
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collect_dir(item);
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} else if (isfile(full_item_path)) {
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shared_ptr<File> f(new File());
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f->path_directories = path_directories;
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f->name = item;
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f->load_data(root_dir);
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this->files_by_patch_order.emplace_back(f);
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this->files_by_name.emplace(relative_item_path, f);
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patch_index_log.info("Added file %s (%zu bytes; %zu chunks; %08" PRIX32 ")",
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full_item_path.c_str(), f->data->size(), f->chunk_crcs.size(), f->crc32);
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}
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}
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path_directories.pop_back();
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};
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collect_dir(".");
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}
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const vector<shared_ptr<const PatchFileIndex::File>>&
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PatchFileIndex::all_files() const {
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return this->files_by_patch_order;
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}
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shared_ptr<const PatchFileIndex::File> PatchFileIndex::get(
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const string& filename) const {
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return this->files_by_name.at(filename);
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}
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