File: CHANGES

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libfile-cache-perl 0.16-15
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Revision history for File::Cache

0.16 2001-04-18-11-52
  - prepared version 0.16 for release
  - replaced the explicit system( ) call to invoke the subprocess get test
    with a fork( ) instead
  - changed email address to dewitt@unto.net
  - started version 0.16

0.15 2001-04-17-15-07
  - prepared version 0.15 for release
  - added a note about the release of Cache::Cache
  - Updated documentation to indicate that $File::Cache::sNO_MAX_SIZE is the
    default cache size. (David Coppit <david@coppit.org>)
  - added a patch by Michael Blakely to allow for $sEXPIRES_NEVER to 
    be used as the $expires_in parameter on a set
  - started version 0.15

0.14 2000-11-27-09-45
  - prepared version 0.14 for release
  - documented the optional usage of Storable in the README
  - added requirement for File::Spec 0.82
  - removed "use Data::Dumper"
  - the .description file now uses a global friendly umask
  - started version 0.14
  
0.13 2000-10-07-19-22
  - binmode is now used to avoid problems with setting/getting binary data
    from the cache (This change probably means that the segfault
    above is no longer a problem. However, it's still a good idea to use a
    canonical format in case processes on different platforms are accessing
    the same cache over NFS.)
  - Removed unreferenced subroutine _purge_all
  - Minor formatting changes
  - Internal subroutines get_user_path() and get_namespace_path(), are
    now prefixed by an underscore
  - Names of non-method subroutines are now all consistently uppercase
  - File::Cache::REDUCE_SIZE was coded as a method, but documented as
    an object-independent function. Fixed it, and made
    _choose_victim_file an object-independent function
  - Added POD documentation for get_namespace(), set_namespace(),
    get_max_size(), set_max_size(), get_cache_depth(), and
    set_cache_depth()
  - "cache entry" changed to "cache object" for consistency in
    terminology
  - Cache size reduction is now done, if necessary, when
    set_max_size() called 
  - Minor portability improvements
  - Improved error checking for REDUCE_SIZE
  - Added parameter checking to subroutines
  - Removed $sGET_STALE_ONLY and $sGET_FRESH_ONLY from @EXPORT_OK list
    (these are internal constants)
  - Internal subroutines get_username_path() and get_namespace_path()
    now build the path directly from the cache key, username, and
    namespace parameters. Internal subroutines set_username_path() and
    set_namespace_path() removed.
  - Improved directory verification so that it only happens when the
    cache key, user, or namespace change.
  - Modified some functions to return references instead of operating
    on reference parameters
  - Added cache metadata support (useful for checking that an existing
    cache is compatible with the current version of File::Cache)
  - Added $CACHE_OBJECT_VERSION, which describes the version of cache
    objects that the current version of File::Cache can work with.
  - Added support for choosing the persistence mechanism to be either
    Storable (the traditional and default mechanism) or Data::Dumper.
    (Data::Dumper is slower, but (1) is a standard Perl module, (2) is
    written entirely in Perl (no compilation difficulties), and (3)
    generates human-readable cache entries.)
  - minor formatting change to better fit 80 columns
  - changed _UNTAINT_STRING to take a untainted regex
  - added _UNTAINT_FILE_PATH to call _UNTAINT_STRING with the file path regex
  - Changed default cache key from $TMPDIR/File::Cache to $TMPDIR/FileCache on
    DOS/Windows platforms, since the former is illegal.
  - retroactively split version 0.13 from 0.12
  - Corrupted cache objects stored using Data::Dumper are automatically
    detected and removed from the cache
  - Cache_Description.pl was changed to .description 
  - .description files now use a proprietary format instead of Data::Dumper
  - changed test.pl to always quote the call to the subprocess
  - changed test/test_get.pl to strip quotes if needed
  - wrote _RECURSIVELY_REMOVE_DIRECTORY to avoid taint failures in File::Path
  - switched to finddepth() instead of find() in File::Find because finddepth()
    doesn't use Cwd, which in turn is not taint safe.
  - removed the unused _UNTAINT_CACHE_DESCRIPTION_CODE() and
    $sUNTAINTED_CACHE_DESCRIPTION_CODE_REGEX
  - updated the README to mention the cache upgrade issues
  - updated the CREDITS file
  - changed _WRITE_FILE to write to a temp file then rename to
    avoid corruption race (thanks Randal!)
  - better documentation for get, get_stale, and set (thanks Randal!)
  - added two tests for getting and setting blessed objects
  

0.12 2000-08-25-09-58 (not public)
  - fixed a typo in CHANGES
  - added a more generic taint check called _untaint_string, this
    is called everywhere tainting could occur
  - use File::Spec::Functions::tmpdir to remove OS dependency for temp
    directory (Bug ID 104869)
  - removed last TODO item
  - cache directories are now only created when needed (David Coppit
    <david@coppit.org>)
  - fixed the second test "21" in test.pl
  - switched to nfreeze() instead of freeze to avoid segfault (thanks
    David!)

0.11 2000-06-22-09-23
  - updated the CREDITS file
  - updated Cache.pm for version 0.11

0.10 2000-06-22-09-07
  - updated Cache.pm for version 0.10
  - added the remove($identifier) method to allow keys to be selectively
    removed
  - added a test for remove
  - changed email address in the docs to <dewitt@avacet.com>
  - reformatted for 80 column displays
  - updated the _write_file routine to make it pass taint checking
    (jhoward@fastmail.fm)
  - updated the purge() routine to make it pass taint checking
    (jhoward@fastmail.fm)

0.09 2000-04-28-12-43
  - perldoc updates for get and get_stale (Bug ID 104432)
  - added public constants to EXPORT_OK (Bug ID 104433)
  - modified test scripts to make use of EXPORT_OK'd vars
  - updated the TODO list

0.08 2000-04-12-10-31
  - added get_creation_time() (David Coppit <david@coppit.org>)
  - added get_expiration_time() (David Coppit <david@coppit.org>)
  - updated the perldoc (David Coppit <david@coppit.org>)
  - updated the test.pl script to include tests for get_creation_time() and
    get_expiration_time() (David Coppit <david@coppit.org>)


0.07 2000-04-10-09-45
  - added support for the "cache_depth" option that enables
    subdirectories in the cache to increase performance when caching
    large numbers of objects
  - rewrote the _recursive_find_nearest_expiration and
    _recursive_find_latest_accessed routines to actually work recursively
    (needed to support cache_depth)
  - added a routine that avoids a race when removing files from the
    cache (thanks to Jessica Mintz)

 
0.06 2000-03-06-11-12
  - bug fixed where purge() didn't actually delete the cache file
    (David Coppit <david@coppit.org>)
  - auto_purge, username, max_size, and filemode options added (David
    Coppit <david@coppit.org>)
  - cache_path was renamed user_path
  - set/get methods added for auto_purge, username, max_size,
    expires_in and filemode, namespace_path, cache_key, cache_path,
    and user_path (David Coppit <david@coppit.org>)
  - automatic cache size reduction added to set() method, and
    reduce_size() method created (David Coppit <david@coppit.org>)
  - fixed the CHANGES file to reflect the version 0.05 changes
  - updated the perldoc (David Coppit <david@coppit.org>)
  - now using File::Spec for the path generation (thanks for David for
    the idea)
  - updated the test.pl and test/test_get.pl scripts to include tests
    for setting the username, filemode, and max_size


0.05 2000-02-22-16-23
  - updated the requirements in the README
  - provided a default username if getpwuid is not available (MacOS)
  - fixed a problem where _purge failed on FreeBSD (thanks to
    Doug Steinwand)


0.04 2000-02-16-14-48
  - create a per-user namespace to better deal with file 
    permission problems when more than one user wants
    to use File::Cache
  - only create a globally read/write directory for 
    the default root of the cache (i.e., /tmp/File::Cache/)
  - implemented size and SIZE
  - added the _verify_directory routine for better 
    encapsulation of that functionality
  - updated documentation
  - first submitted to CPAN
  - modified test.pl to use "/tmp/TMPC" as a namespace
  - updated the requirements in Makefile.PL


0.03 2000-02-16-02-10
  - set the default file and directory creation umask
    to 0000 as a *really* temporary fix


0.02 2000-02-14-16-52
  - set the default file and directory creation umask
    to 0000 as a temporary fix to the file permission
    problem


0.01 2000-02-10-09-22
  - original version, created by dclinton@eziba.com