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bit7z is a C++ static library which allows to compress and extract many file archive formats, all through a clean, simple and entirely object-oriented interface to the dynamic libraries from the 7-zip project (https://www.7-zip.org/).
It supports compression and extraction to and from the filesystem or the memory, reading of archives metadata, updating existing archives, creation of multi-volume archives, operation progress callbacks and many other functionalities.
- Compression of files and directories using the following archive formats: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM.
- Extraction of the following archive formats: 7z, AR, ARJ, BZIP2, CAB, CHM, CPIO, CramFS, DEB, DMG, EXT, FAT, GPT, GZIP, HFS, HXS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RAR5, RPM, SquashFS, TAR, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR, XZ, Z and ZIP.
- Reading metadata of archives and of their content (from v3.x).
- Testing archives for errors (from v3.x).
- Updating existing file archives (from v3.1.x).
- Compression and extraction to and from memory (from v2.x — compression to memory is supported only for BZIP2, GZIP, XZ and TAR formats).
- Compression and extraction to and from C++ standard streams (from v3.1.x).
- Compression using a custom directory system in the output archives (from v3.x)
- Selective extraction of only specified files/folders using wildcards (from v3.x) and regexes (from v3.1.x).
- Creation of encrypted archives (strong AES-256 encryption — only for 7z and ZIP formats).
- Archive header encryption (only for 7z format).
- Choice of the compression level (from none to ultra, not all supported by every output archive format).
- Choice of the compression method (from v3.1.x — see the wiki for the supported methods).
- Choice of the compression dictionary size (from v3.1.x).
- Automatic input archive format detection (from v3.1.x).
- Solid archives (only for 7z).
- Multi-volume archives (from v2.1.x).
- Operation callbacks, through which it is possible to obtain real time information about the ongoing extraction or compression operation (from v2.1.x).
Please note that the presence or not of some of the above features depends on the particular .dll used along with bit7z.
For example, the 7z.dll should support all these features, while 7za.dll should support only the 7z file format and the 7zxa.dll can only extract 7z files. For more information about the 7-zip DLLs, please see this wiki page.
In the end, some other features (e.g. automatic format detection and selective extraction using regexes) are disabled by default and macros defines must be used during compilation to have them available (wiki).
If you have found this project useful, please consider supporting it with a small donation or buying me a coffee/beer, so that I can keep improving it! Thank you! :)
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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.