107 lines
No EOL
3.3 KiB
C++
107 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 DeadPhoenix8091, Epicpkmn11, Flame, RocketRobz, StackZ, TotallyNotGuy
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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 "utils/extract.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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Result extractArchive(std::string archivePath, std::string wantedFile, std::string outputPath) {
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archive_entry *entry;
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archive *a = archive_read_new();
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archive_read_support_format_all(a);
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archive_read_support_format_raw(a);
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if(archive_read_open_filename(a, archivePath.c_str(), 0x4000) != ARCHIVE_OK) {
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return EXTRACT_ERROR_ARCHIVE;
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}
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Result ret = EXTRACT_ERROR_FIND;
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while(archive_read_next_header(a, &entry) == ARCHIVE_OK) {
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std::string entryName(archive_entry_pathname(entry));
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std::smatch match;
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if(std::regex_search(entryName, match, std::regex(wantedFile))) {
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ret = EXTRACT_ERROR_NONE;
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// make directories
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std::string out = (outputPath + match.suffix().str());
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int substrPos = 1;
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while(out.find("/", substrPos)) {
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mkdir(out.substr(0, substrPos).c_str(), 0777);
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substrPos = out.find("/", substrPos)+1;
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}
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Handle fileHandle;
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Result res = openFile(&fileHandle, (outputPath + match.suffix().str()).c_str(), true);
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if (R_FAILED(res)) {
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ret = EXTRACT_ERROR_OPENFILE;
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break;
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}
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u64 fileSize = archive_entry_size(entry);
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u32 toRead = 0x4000;
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u8 * buf = (u8 *)malloc(toRead);
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if (buf == NULL) {
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ret = EXTRACT_ERROR_ALLOC;
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FSFILE_Close(fileHandle);
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break;
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}
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u32 bytesWritten = 0;
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u64 offset = 0;
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do {
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if (toRead > fileSize) toRead = fileSize;
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ssize_t size = archive_read_data(a, buf, toRead);
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if (size < 0) {
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ret = EXTRACT_ERROR_READFILE;
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break;
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}
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res = FSFILE_Write(fileHandle, &bytesWritten, offset, buf, toRead, 0);
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if (R_FAILED(res)) {
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ret = EXTRACT_ERROR_WRITEFILE;
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break;
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}
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offset += bytesWritten;
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fileSize -= bytesWritten;
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} while(fileSize);
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FSFILE_Close(fileHandle);
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free(buf);
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filesExtracted++;
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}
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}
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archive_read_free(a);
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return ret;
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} |