DP Tool Club 12/CD_ASCQ_12_0294.iso/maj/2090/ziprpro.rev

Text File | 1994-01-19 | 18KB | 424 lines

        ZIP'R Professional For DOS Revision History


01-20-94 ■ Version 1.19

           . Added additional error messages for new error checking
             procedures, and corrected a typo in a separate error
             message.

           . Enhanced the conventional memory available routine to
             provide a more accurate estimate of the amount of
             conventional memory available on the system.  (This
             figure approximates the free memory reported by MEM.)

           . Corrected a problem where the logic controlling the
             loading of a command processor was backwards when
             executing a .BAT or .BTM file

           . Added a check to force a command processor to be
             loaded if the program to be executed contains a
             .BAT or .BTM extension.

           . Added support to execute the desired program without
             loading a command processor first.  This increases
             the memory available to the program by about 3-5K.

           . Removed unnecessary "Continue" statements from the
             INI and ZIF file read routines.

           . Converted internal string pointer variables to use
             INI and ZIF records.

           . Added support in the TSR Container file section to
             use the AlternateEXELaunchDirectory feature.

           . Fixed a problem where the "CALL" statement was not
             being placed in front of the program name in the TSR
             Container file if the Parameters field was blank.

           . Corrected a potential problem where the current drive
             and directory was not being set prior to executing
             OUT commands.  This could have been a problem if the
             current drive and/or directory was changed during
             program execution, such as when shelling to DOS.

           . Added support for an alternate EXE launch directory
             to make it possible to launch a program from a
             directory other than the one in which the executable
             file resides.  (The program does NOT have to be an
             EXE file.)  This feature allows programs, such as
             Microsoft Works, Borland Pascal, and others, to be
             executed from a data subdirectory.

           . Added preliminary support for string encryption and
             decryption.


01-06-94 ■ Version 1.18

           . Improved the Conventional memory estimate on the
             prelog screen to more accurately reflect the amount
             of memory available after swapping.

           . Updated the BIOS screens to match the direct-write
             screens.

           . Added support for AUTO, DIRECT, and BIOS screen write
             modes.  This should help to solve any screen-related
             compatibility problems that might exist.

           . Added video mode detection when using the AUTO screen
             writes option.

           . Updated the prelog screen to display the status of the
             Use Atomic Lock Files option.

           . Updated the prelog screen to display the Selective
             Extraction (SXT) and Selective Exclusion (SXC) entries
             separately.  (If either option is disabled, the
             corresponding entry count will be 0.)

           . Updated the prelog screen to display the status of the
             new Subdirectory Deletion option.

           . Added support to NOT delete sub-directories when using
             PKZIP v2.04g.  This switch is necessary when an OS/2
             system is operating on a network in combination with
             other systems.  Due to some sort of conflict, sub-
             directories can not be re-created under OS/2.  (Unsure
             whether this is an OS/2, NetWare Requester, or PKZIP
             caused problem.)  This switch can only be used with
             PKZIP v2.04g.

           . Added preliminary support for compression program version
             number tracking.  Future versions of ZIP'R Professional
             may support compression program features that might not
             be available in previous versions of the compression
             program.

           . Corrected an alignment problem on the FileCount indicator.

           . Added a FileCount / Twirling Bar indicator to the AFSC
             Level 4 screen to display the progress of the file size
             scanning.  (Due to the high scanning speed, this feature
             will be useful only on compressed files with an extremely
             high number of files.)


01-01-94 ■ Version 1.17

           . Corrected a problem where .SXT signal files were not
             being deleted when the /CLEANUP switch was used.

           . Corrected a possible ambiguity in the ExecDOS error
             messages.  (#-5 changed to # -5.)

           . Updated the AFSC routines to use integer division, which
             eliminates the extra rounding step needed for reals.

           . Corrected a problem in the AFSC Level 4 (ZIP) calculation
             procedure that would cause erroneous calculations.  (The
             file size returned would always be 0.)


12-27-93 ■ Version 1.16

           . Fixed a problem where an extra hyphen was being prepended
             to the compression command line.

           . Added CompressionOptions support to the ARJ and LHA
             compression procedures.  (LHA does not currently support
             this feature.)

           . Fixed a problem where the CompressionOptions field in the
             .ZPD file was not being passed to PKZIP.

       . Fixed a minor problem where ".ZIP" was hard-coded onto the
         Query For Compression screen.  If ARJ or LHA was being used,
         the screen would still say that the resulting compressed file
         would have a .ZIP extension.

       . Added an additional check for PKZIP.EXE before decompressing
         a .ZIP file when using Selective Extraction or Selective
         Exclusion.  This is important, because when these options are
         enabled, the program MUST be re-compressed to preserve all
         data files.

       . Fixed a potential problem where the existence of PKZIP.EXE
         was not being verified before deleting files from the
         original .ZIP file.

       . Fixed a potential problem where ZIP'R Professional was not
         verifying the existence of PKUNZIP.EXE and PKZIP.EXE before
         attempting to create the temporary file lists.

       . Added an additional check to attempt to locate the selected
         compressor on the DOS PATH.  ZIP'R Professional will use the
         path specified in the ZIPRPRO.INI file if the program exists.
         If the program cannot be found, the ZIPRPRO directory is
         searched.  If this search fails, the DOS PATH is searched.


12-25-93 ■ Version 1.15

       . Cleaned up some internal routines related to cleaning up
         signal files before exiting ZIP'R Professional.

       . Changed the .ZPD and .INI file read routines to reduce
         overhead and increase speed.


12-22-93 ■ Version 1.14

       . Added error reporting to the error trapping sections of
         the IN Command, Program, and OUT Command routines.  If an
         error is detected in any of these routines, ZIP'R Pro will
         report the error and query the user whether to continue.
         The error reporting routines will also report whether the
         error was generated by the command processor (Error Code)
         or by the IN Command, OUT Command, or Program (Exit Code).

       . Corrected a problem in the Accurate File Size Calculation
         routines where the selective extraction and exclusion
         entries were still being used, even if the file was being
         decompressed from a floppy disk.

       . Fixed a major problem where data loss could occur if the
         compressed file was stored on a floppy diskette, and
         selective extraction or selective exclusion was enabled.
         This is a rather rare combination of options, but since
         data loss is likely, it is prudent to upgrade previous
         versions of ZIP'R Professional For DOS.

       . Corrected a problem where the cursor would disappear
         following some query screens.

       . Added /CLEANUP option to erase all signal files from the
         ZIPRPRO sub-directory.  This option should be used with
         care to ensure that no other processes are using ZIP'R
         Professional.


12-20-93 ■ Version 1.13

       . Corrected a problem where a program that is executed
         using a batch file, that also used a TSR container file
         would not return control to ZIP'R Professional for
         re-compression.  The solution was to "CALL" the batch
         file from the TSR container file.

       . Corrected a problem where the Decompression Signal File
         might not get deleted under some error situations.

       . Completed the transfer of code to common units to allow
         code sharing between different components of the ZIP'R
         Professional series of programs.

       . Added conditional defines to allow code sharing between
         ZIP'R Professional For DOS and the ZProcessor component
         of ZIP'R Professional For Windows.

       . Isolated a problem creating sub-directories under OS/2
         to the use of "Global" network sessions.  The Novell
         OS/2 requestor handles directory creation differently
         under global or private network sessions.  ZIP'R Pro
         should be used in a private session if sub-directories
         must be re-created.

       . Checked into a potential problem with AFSC Level 4 if
         the lines were too long, and wrapped on the screen.
         The function used to handle the string to long integer
         conversion correctly handles this situation, and ignores
         any strings that it can't convert.  No action necessary.


12-05-93 ■ Version 1.12

       . Added error checking to make sure that compression
         cannot occur to floppy drives unless the compression
         program being used is PKZIP.  (Other compression
         programs do not currently support spanning floppies.)

       . Changed the way ZIP'R Professional deals with the
         attributes of a compressed file that resides on a
         floppy diskette.  The attributes of these files
         will not be changed, since we do not know which
         diskette is in the drive, and multiple diskettes
         may be required to store the compressed file.

       . Fixed a problem with floppy compression where the
         query for compression floppy diskette was occurring
         too late.  This caused programs to be compressed
         to floppy diskettes properly, but they could not be
         decompressed.  (After further checking, the programs
         could be decompressed, but the prompt for the
         decompression floppy disk was in the wrong position.
         A work-around was to simply make sure that the disk
         was in the drive.)

       . Added Compress/Decompress and TSR Entries indicators
         to prelog screen.  Separated Net/Multi to be two
         separate indicators, and added code to detect them
         individually.

       . Added a program halt command following the error
         message display if the ZIPRPRO.INI file cannot be
         found.

       . Corrected a problem where the .ZIP file was not
         being deleted if Update mode and Compress/Decompress
         only mode were enabled.

       . Added code to force a total decompression if
         "Compress/Decompress Only" is enabled.  This will
         prevent problems if all files are not extracted.

       . Corrected a problem where the .DSF file was not
         being deleted under various circumstances in the
         decompression module.

       . Corrected a potential problem where logging to a
         non-existent program or program parent directory
         was not calling the "Done" procedure.

       . Removed unnecessary ZipName pointer variable, and
         replaced with CompressedFileName pointer variable.

       . Corrected a problem where the .DSF (Decompression
         Signal File) was not being deleted if an error
         occurred during the CheckSpaceForDecompression
         procedure.  (This problem could manifest itself
         if the compressed file was corrupt.)


11-26-93 ■ Version 1.11

       . Added error message if Selective Exclusion is enabled,
         but no file specifications have been entered.

       . Corrected problems where three delete routines were
         not marking the compressed file with normal attributes,
         generating a run-time error.  (Code 5, File Access
         Denied)  This error would occur when query mode was
         enabled, and the program was not re-compressed.

       . Updated random filename generator code in the DECOMP
         procedure to use the new method for generating
         random filename prefixes.

       . Added "Selective Exclusion" feature to complement
         Selective Extraction.  Selective Exclusion allows
         certain files or groups of files to be excluded
         from extraction.

       . Changed the prelog screen to display the number of
         Selective Extraction files (entries) and the number
         of simultaneous ZIPRPRO licenses.


11-21-93 ■ Version 1.10

       . Changed the logic in the prelog screen to highlight
         Query Option if Selective Extraction is enabled, but
         the compression type is not ZIP.

       . Changed the countdown code on the prelog screen to
         count to 0.

       . Added code to mark the compressed file as ReadOnly
         during ZIPRPRO operations.  This should help to
         reduce the chances of accidently deleting the original
         compressed file during update mode (inconvenience) or
         during selective extraction (potential disaster).

       . Added code to mark all signal and temporary files
         ReadOnly, to prevent other processes from erasing them.
         Also added code to mark files as normal before attempting
         to delete them.

       . Corrected a problem where the atomic lock files were
         not being closed properly after creation.

       . Re-worked the token and temporary file creation and
         detection routines to use variable names and file
         extensions that fit their function.

       . Moved the code to generate a random filename prefix
         to a separate, common procedure, reducing the
         complexity of the routines that require these names.

       . Added error message codes to trap the condition if
         more than one users attempts to access a compressed
         file when Selective Extraction is turned on.

       . Fixed a problem where the .TK1 file was being created
         on programs that did not need to be decompressed, and
         the .TK1 file was not being deleted.

       . Moved .TK1 and .TK2 file detection and creation to a
         common area of the DecompressZipFile procedure.

       . Changed the signal file checking order to accomodate
         the new Selective Extraction .SXT file.

       . Fixed a problem where the Selective Extraction .SXT
         signal file was being created in error.  (A non-atomic
         file was being created.)

       . Added code to limit access to the compressed file if
         selective extraction is being used by any user.

       . Added error message code to trap the condition if
         Selective Extraction is turned on, but no files are
         entered for extraction.

       . Corrected a problem where the procedure to calculate
         the space required to decompress the compressed file
         was being executed when the compression type was NONE,
         and no compressed file existed.

       . Checked out a potential problem with PKUNZIP erroring
         out if files specified for extraction did not exist.
         It turns out that PKUNZIP simply ignores this type of
         error, eliminating the need to deal with it in ZIPRPRO.

       . Added code to disable Query mode if using Selective
         Extraction.  (This is necessary to insure the integrity
         of the original compressed file, and to prevent errors
         when attempting to decompress files a second time.)

       . Corrected problems in the CheckSpaceForDecompression
         procedure where an EXIT was being executed before the
         selective extraction container file was generated.

       . Revised the code in the CalculateExactFileSize routine
         to base its calculations on the list of files to be
         extracted, if Selective Extraction is enabled.

       . Added the more rigid compressed file type checking to
         the internal CalculateExactFileSize, DecompressZipFile,
         and CheckSpaceForDecompression procedures.

       . Eliminated the automatic detection of compressed file
         archive types.  Now, the type of compressed file must
         match the compression type specified in the .ZPD file.
         (If users wish to change compression types, they must
         use a compression type of "NONE" for one pass.  Then,
         the file may be re-compressed with the new compressor.)

       . Added fail-safe code to the prelog screen procedure
         that will show grayed-out check marks if any options
         have been disabled by ZIP'R Professional.

       . Updated prelog screen to show the status of the new
         "Selective Extraction" option.

       . Added support for "Selective Extraction" when using
         PKZIP/PKUNZIP.


11-15-93 ■ Version 1.00

       . Initial release of ZIP'R Professional For DOS.