How to deal with linking problems in Microsoft Visual Studio?
- If you receive LNK2005, your application probably uses
different run-time libraries that the ZipArchive Library was compiled for.
- If you receive LNK1104 (e.g. cannot open the mfc42u.lib file), you probably haven't installed Unicode libraries.
To resolve both problems, make sure you have followed the information given in
Compilation of the ZipArchive Library and Integration with Applications.
How to create an archive larger than 4GB or compress more than 65535 files inside
it?
The standard zip format does not support large archives or large files inside archives
(even if a compressed file was smaller than 4GB). You need to use the Zip64 extensions.
See
Zip64 Format: Crossing the Limits of File Sizes and Number of Files and Segments for more information. This functionality
is available only to the purchasers of the Full Version license.
Will the ZipArchive Library work with .NET applications?
You can use the Library with a C++/CLI application. See
Compilation of the ZipArchive Library and Integration with Applications
for more information.
Can I perform multithreaded operations on an archive?
Why I can't make the libray to work as expected in a MFC application?
Make sure that your application defines
ZIP_ARCHIVE_MFC.
See
Compilation of the ZipArchive Library and Integration with Applications for more information.
- Some archives are not entirely consistent in their structure, however the compressed
data may be correct. Try relaxing some of the consistency checks with the CZipArchive::SetIgnoredConsistencyChecks() method.
- Another reason is that data in the archive is compressed using imploded method (usually
by old archivers). The ZipArchive Library supports only deflation (which is the
most commonly used by archivers) and storing. To determine the compression method
for a particular file, obtain the information data (see Requesting Information, Predicting Names and Sizes)
and examine the CZipFileHeader::m_uMethod field.
Why I receive the CZipException::cdirNotFound exception
when trying to open a segmented archive?
You need to open the last segment. For more information about dealing with this
problem in spanned archives, see
Segmented Archives: Splitting and Spanning.
How can I detect the segmentation mode of an archive?
You need to open the archive and the call the
CZipArchive::GetSegmMode()
method.
How to use a partial path for the filename inside an archive?
For example, if you compress a directory
c:\Program Files\Example,
the full path of the file inside the archive is stored. If you would like to store
the path for the file, e.g. in
c:\Program Files\Example\text\txt\file.dat,
as
Example\text\txt\file.dat, use the
CZipArchive::SetRootPath() method. In this example, you would set it
to
c:\Program Files\. Remember about setting
bFullPath
argument in compression methods to
false.
How to create an archive under Windows that will be readable under Linux?
Inside archives there is information stored about the system it was created under.
It helps converting the file attributes that are stored inside the archive to file
attributes that are used on the system on which the file is extracted. Some Linux
archivers cannot convert Windows attributes to Unix, so that it is needed to create
the archive with the Linux attributes already (and the internal info about the system
set to the Linux value). To do it, simply call the
CZipArchive::SetSystemCompatibility()
method with the argument set to
ZipCompatibility::zcUnix.
How to extract or delete files that match a specified wildcard pattern?
You need to build a
CZipIndexesArray object with the
CZipArchive::FindMatches() method and then:
Why an exception is thrown when I call one of CZipArchive::CloseFile()
methods?
If you haven't extracted all of the file contents (e.g. only the beginning) or you
have encountered an exception during extraction, you need to call the
CZipArchive::CloseFile(LPCTSTR, bool) with
bAfterException
parameter set to
true.
