When using the Show Disks icon option, single window navigaton mode,
and starting navigation by the Disks icon, these bugs would occurs
upon entering child poses :
*) The draggable icon at the top right wouldn't appear
*) The file menu wouldn't update properly (for example, the New folder
menu item won't show)
Based in part on dru_ed's patch.
Besides that this is a nicer interface, it allows us to get a the HPKG
header as a side effect of initializing the reader, thus preventing
seeking backward in the file. This makes "package recompress - <file>"
work.
Until now we always declared in the HPKG header that the package file is
zlib compressed. For uncompressed files we would just store all
individual chunks uncompressed. Now we handle completely uncompressed
files slightly differently: We don't write the redundant chunk size
table anymore. The size savings are minor, but it makes the uncompressed
format read-streamable which may be handy.
* PackageFileHeap{Reader,Writer} as well as Package{Reader,Writer} and
their implementation and super classes do now internally use a
BPositionIO instead of a FD to access the package file. This provides
more flexibility needed for features to come.
* BPackageReader has already grown a new Init() version with a
BPositionIO* parameter.
Simple BPositionIO implementation using the POSIX API on a FD. In effect
similar to BFile, but more easily ported to kernel and boot loader (and
the FD is reusable).
Make sure the compressed/uncompressed heap size and the chunk size
table look plausible, so we can rely on the values later. Fixes
potential crashes for corrupt packages.
This reverts commit 256080b112e417fc4fd2f3f9fcb23485e1b23b42.
With the following changes:
* Adjusted to the BZlibCompressionAlgorithm API.
* Add some error handling.
* BCompressionAlgorithm is a base class for classes that provide
compression/decompression functionality. There are methods for
compressing/decompressing a single buffer and factory methods for
a compressing/decompressing input/output BDataIO.
* BZlibCompressionAlgorithm is a BCompressionAlgorithm implementation
using zlib.
Keep the brief description as a regular comment above each public method.
Leave the docs of private methods.
Some variable renaming mostly because of abbreviations.
Add documentation for all the public methods and app_info members and defines
that didn't have docs in the cpp file.
* FDDataWriter and ZlibDataWriter weren't used anymore.
* AbstractDataWriter was implemented only by PackageFileHeapWriter,
which was only used by WriterImplBase.
* Add a PackageFileHeapWriter::AddDataThrows() which has semantics
equivalent to the previously inherited WriteDataThrows().
