105 lines
No EOL
3.3 KiB
C++
105 lines
No EOL
3.3 KiB
C++
/*
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* This file is part of Universal-Updater
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* Copyright (C) 2019-2020 Universal-Team
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
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* * Requiring preservation of specified reasonable legal notices or
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* author attributions in that material or in the Appropriate Legal
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* Notices displayed by works containing it.
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* * Prohibiting misrepresentation of the origin of that material,
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* or requiring that modified versions of such material be marked in
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* reasonable ways as different from the original version.
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*/
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#include "extract.hpp"
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#include "logging.hpp"
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#include <archive.h>
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#include <archive_entry.h>
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#include <regex>
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int filesExtracted = 0;
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std::string extractingFile = "";
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// That are our File Progressbar variable.
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u64 extractSize = 0, writeOffset = 0;
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Result extractArchive(std::string archivePath, std::string wantedFile, std::string outputPath) {
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extractSize = 0, writeOffset = 0, filesExtracted = 0;
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archive *a = archive_read_new();
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archive_entry *entry;
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int flags;
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/* Select which attributes we want to restore. */
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flags = ARCHIVE_EXTRACT_TIME;
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flags |= ARCHIVE_EXTRACT_PERM;
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flags |= ARCHIVE_EXTRACT_ACL;
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flags |= ARCHIVE_EXTRACT_FFLAGS;
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a = archive_read_new();
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archive_read_support_format_all(a);
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if (archive_read_open_filename(a, archivePath.c_str(), 0x4000) != ARCHIVE_OK) {
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return EXTRACT_ERROR_OPENFILE;
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}
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while(archive_read_next_header(a, &entry) == ARCHIVE_OK) {
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if (archive_entry_size(entry) > 0) { // Ignore folders
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std::smatch match;
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std::string entryName(archive_entry_pathname(entry));
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if (std::regex_search(entryName, match, std::regex(wantedFile))) {
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extractingFile = outputPath + match.suffix().str();
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// make directories
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int substrPos = 1;
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while(extractingFile.find("/", substrPos)) {
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mkdir(extractingFile.substr(0, substrPos).c_str(), 0777);
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substrPos = extractingFile.find("/", substrPos) + 1;
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}
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uint sizeLeft = archive_entry_size(entry);
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extractSize = sizeLeft;
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writeOffset = 0;
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FILE *file = fopen(extractingFile.c_str(), "wb");
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if (!file) {
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return EXTRACT_ERROR_WRITEFILE;
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}
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u8 *buf = new u8[0x30000];
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if (buf == nullptr) {
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return EXTRACT_ERROR_ALLOC;
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}
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while(sizeLeft > 0) {
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u64 toRead = std::min(0x30000u, sizeLeft);
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ssize_t size = archive_read_data(a, buf, toRead);
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fwrite(buf, 1, size, file);
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sizeLeft -= size;
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writeOffset += size;
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}
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filesExtracted++;
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fclose(file);
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delete[] buf;
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}
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}
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}
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archive_read_close(a);
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archive_read_free(a);
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return EXTRACT_ERROR_NONE;
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} |