DP Tool Club 22/CD_ASCQ_22_0695.iso/win/tools/zprow214/zprocess.rev

Text File | 1995-04-09 | 16KB | 368 lines

                        ZProcessor Revision History


04-10-95 ■ Version 2.14

         . Changed the memory requirements in the ZPROCESS.PIF file
           from 350K to 512K.  This reduces the likelihood of any
           "Insufficient Memory" errors occurring when using Internal
           ZIP compression.  (If you do not use Internal ZIP compression,
           but instead use PKZIP, ARJ, or LHA, you may reduce these
           requirements at your own risk.  See the documentation file
           for more information.)

         . Reduced the memory requirements for the ZProcessor by
           reducing the code size (a couple of unnecessary units were
           being linked into the code), and overlaying more units.

         . Rewrote the reading routines to use some common reading
           functions from our internal STSI libraries.


04-05-95 ■ Version 2.13

         . New "Child Process Checking" feature added.  See the file
           ZPROWIN.REV for details.


03-13-95 ■ Version 2.12

         . Fixed a problem with internal ZIP compression that occurred
           when the user specified a location for the Compressed File
           that was different than where the program was being executed
           from.  (Various error messages could be noted at the end of
           the compression process.)  Internal ZIP was not changing to
           the compressed file directory before creating the ZIP file,
           causing it to be created in the wrong place.  Made sure that
           new code changes to the compressed file directory before
           creating the compressed file, and changes back to the program
           (parent) directory after the compression process is finished.


03-02-95 ■ Version 2.11

         . Minor coding changes to clarify and simplify code.  See the
           file ZPROWIN.REV for other changes.


02-16-95 ■ Version 2.10

         . Fixed a problem with internal compression where the error
           "Could not erase the file nnn.ZIP" was being reported at
           the end of the compression process on single-user systems.
           This error message was generated as a result of an unsuccessful
           call to the "SameFile" routine.  Although the error message
           was being issued, this problem should not have affected the
           user's data in any way.  (This error message did not appear
           on network systems.)


01-27-95 ■ Version 2.09

         . Updated code with newest library updates for compression
           routines.


11-24-94 ■ Version 2.08

         . Fixed a major problem where using Internal ZIP compression
           to decompress a file would cause an error "Error opening
           ZIP file.  File access denied".  The compressed file is
           marked read-only at various times by ZIP'R Pro as a
           precautionary measure, to prevent against accidental deletion,
           either by ZIP'R Pro or any other source.  In this instance,
           the compressed file was marked as read-only, but was not
           returned to normal attributes before an attempt was made to
           decompress it.  (This was due to a missing semi-colon after
           a statement that needed to be terminated.)  This problem only
           manifested itself on a true-blue Windows system, not on an
           OS/2 Windows system (WIN-OS2 session).  (Since STSI's main
           beta-testing platform is OS/2, this problem was not detected
           until recently.)

         . Fixed an obscure problem where the file closing routine
           for redirected files was not working properly when used
           under Windows NT.  Old routine called Interrupt 21, with
           AH=$3E.  New routine uses Pascal's internal Close command.
           This would produce an error "Unable to create StringArray,
           Status = 5" when calculating the disk space requirements
           for a compressed file (only when the Accurate File Size
           Calculation was set to level 3 or level 4).


11-16-94 ■ Version 2.07

         . Fixed a significant problem where the screen would be filled
           with garbage characters immediately after trying to execute
           ZIP'R Pro.  This behavior occurred if the Video Display was
           set to Direct screen writes or Auto Detect with an EGA or
           VGA monitor (and only if the prelog screen was supposed to
           be displayed).  The direct screen writing was being done from
           an overlaid unit, which called an assembly language OBJ file,
           thus causing corruption on the screen.  This screen writing
           procedure has been moved into a non-overlaid unit.  (This
           problem was introduced in version 2.06, when overlays were
           added.)


11-13-94 ■ Version 2.06

         . Overlaid ZPROCESS.EXE to reduce the memory requirements needed
           to perform operations, especially internal ZIP compression
           and decompression.  Previously, users with memory limited
           systems (less than 512K free before ZIP'R Pro was launched)
           who chose to use internal ZIP compression would experience
           an error #8 (insufficient memory) when compressing programs.
           Now, users with as little as 465K free (before ZIP'R Pro is
           launched) can use internal ZIP compression.

           IMPORTANT:  Although ZIP'R Pro only requires 465K of free
           conventional memory, you must have at least enough conventional
           memory to execute the program that is being launched through
           ZIP'R Pro.  For example, if your program requires 540K of free
           conventional memory, you must have at least 550K of free memory
           before launching ZIP'R Pro.  (ZIP'R Pro's overhead, along with
           the secondary command processor consume about 10K of memory.)
           On the other hand, if your program only requires 400K of free
           conventional memory, you must have at least 465K of free memory,
           since this is the amount required by ZIP'R Pro, in order to
           operate properly.


11-06-94 ■ Version 2.05

         . Included file ERRORS.OPL with distribution package,
           which was previously omitted.


10-29-94 ■ Version 2.04

         . Fixed a problem where one of the error messages was
           being truncated on the error message display screen.

         . Fixed a problem where the amount of memory being used when
           ZProcess swapped itself out to execute a DOS program was much
           greater than it should have been.  (OpExec was being referenced
           in more than 1 unit.)  Symptoms of this problem would be DOS
           programs reporting "Out of memory" errors when they were run
           through ZIP'R Pro For Windows.


10-10-94 ■ Version 2.03

         . Updated code and documentation for ASP compliance.  STSI
           is now an ASP approved author!


08-16-94 ■ Version 2.02

         . Fixed a major problem when using internal ZIP compression.
           When attempting to recompress a program using the Update
           option, users would receive an Error Number 5, (File Access
           Denied).  The compressed file had been marked as read-only, and
           therefore could not be initialized for any other action.  This
           error condition did not appear when using a Novell network, so
           internal beta-testing efforts did not catch the problem.  Added
           code to make sure the compressed file's attributes were properly
           set before any action to the file is attempted.


08-09-94 ■ Version 2.01

         . No changes made.


08-04-94 ■ Version 2.00

         . Enhanced ZProcessor's ability to handle "overwrite" error
           messages generated by PKUNZIP.EXE or ARJ.EXE.  When either
           of these programs detects a file on the hard drive that
           already exists in the compressed file, they will issue an
           overwrite message, prompting the user whether or not the
           file should be replaced with the one located in the
           compressed file.  Each of these programs will then generate
           an exit code, which normally causes the ZProcessor to cease the
           program execution and terminate.  Since these errors are
           non-fatal errors, ZIP'R Pro (ZProcessor) now offers users the
           choice of whether to continue with normal program execution
           or not.

           Why is this necessary?  The most common need for this feature
           is when programs such as Central Point Anti-Virus or Microsoft
           Anti-Virus place "CHKLIST.CPS" or "CHKLIST.MS" files in each
           directory when a virus scan is executed on a user's computer.
           The first time this happens, the compressor (PKZIP, for example)
           adds the left-over virus file into the archive.  The next time
           a virus scan is executed, PKUNZIP detects that a file by the
           same name exists in the program directory, generates an exit
           code, and thus causes ZProcessor to terminate execution.  (This
           could prove to be frustrating, since a file by this name is
           placed in EVERY scanned directory.)  ZProcessor will now detect
           if an overwrite message occurs, and will display a message
           box, allowing the user the option of whether to continue
           with the normal program execution or not.


07-19-94 ■ Version 1.03

         . Fixed several Clear-Screen problems by replacing the
           built-in Clear-Screen command with a custom routine
           that resets the Window to 1,1, 80,25.


04-22-94 ■ Version 1.02

           . No modifications.  (See ZIFPROW.REV for modifications
             to the ZIF Editor Pro.)


03-29-94 ■ Version 1.01

           . Removed support for the /CLEANUP option and moved
             operational code to the ZIF Editor Pro.  The
             (uncompressed) code size was reduced by about 11K.

           . Corrected a problem where the ZIPRPROPath was not
             being set before attempting to read the .INI file.

           . Rearranged the processing order to more closely
             reflect the order used in ZIP'R Pro For DOS.

           . Added support for the /TEST and /CLEANUP options.


03-24-94 ■ Version 1.00

           . Fixed a problem where the compression signal file
             was not being deleted if an error occured while
             attempting to test the archive integrity.

           . Fixed a problem where the compression process would
             be placed in a window rather than as an icon to
             prepare for the Query process, even if Query mode
             had been internally disabled.

           . Added code throughout ZPROCESS to append an error
             code to the ZPROC signal file to signal ZPROWIN that
             an error had occurred.

           . Combined all of the ...Append... procedures into a
             common procedure using enumerated types.

           . Increased the stack size to 12280, to match ZIP'R
             Professional.


02-24-94 ■ Version 0.6ß

           . Created an enumerated type called a LaunchType for
             launching the compression program, decompression program,
             and program.

           . Corrected a problem where a runtime error 2 would occur
             in the CreateSubDirectoriesUnderOS2 procedure, because
             an Else statement was omitted.

           . Brought the ZProcessor code to the same feature level
             as ZIP'R Pro.

           . Added support for the new Instance ID file created by
             ZPROWIN.  It is the responsibility of the ZProcessor
             to delete this file when finished with its operations.

           . Changed the name of the EXECZPRO unit to MAIN.

           . Moved the procedure to create the ZProcessor signal file
             to ZPROWIN.  Altered the ZProcessor code to write to the
             file, but not to create it.

           . Modified error messages unit to include code for
             ZIP'R Pro For Windows.  Added conditional defines to
             make code shareable between the DOS and Windows versions.


12-20-93 ■ Version 0.5ß

           . Corrected a problem where the NetworkMultitasker flag
             was not being set, causing ZIP'R not to create the
             necessary signal files.

           . Corrected a problem where the .ZIP file was deleted
             when Compress/Decompress Only was used in combination
             with Selective Exclusion (also possibly Selective
             Extraction).

           . Corrected a problem with appending .ZFW extensions to
             the passed ZIP'R Information File name.

           . Corrected a problem where Windows programs were being
             executed if Compress/Decompress Only was selected.

           . Added code to allow ZIP'R Information Files to contain
             a .ZFW extension, but not require it.

           . Completed the transfer of ZIP'R Professional For DOS
             code into the ZProcessor.  All units are common, which
             will allow much easier maintenance of the code, and
             keep the ZProcessor at the same feature level as ZIP'R Pro.

           . Corrected a problem that occurred if the .CSF or .DSF
             files exist when executing a windows app.  The error was
             being reported, but the application was being executed
             anyway.

           . Corrected a problem where PKUNZIP would report an Error #9
             (File not found.  No ZIP files found.) when using Selective
             Extraction or Selective Exclusion.  The problem was that
             the selective extraction and exclusion filenames were
             generated during the decompression phase, but the compression
             phase didn't know the filenames.  The solution was to write
             the filenames to the .ZSF file.

           . Re-wrote the ZProcessor in Pascal, borrowing code sections
             from ZIP'R Professional For DOS.


07-16-93 ■ Version 0.3ß

           . Made sure that the current directory is correct
             before executing the compression programs.

           . Extended passed parameter capability to 14 parameters.

           . Added Update Option related code.

           . Added Query Option related code.


07-05-93 ■ Version 0.2ß

           . Added code to echo the ERRORLEVEL generated by PKZIP/
             PKUNZIP to the temporary file.

           . Changed parameter handling to accomodate the new
             ActionToBeTaken parameter issued by ZIPRWIN.EXE.

           . Increased the number of parameters that ZPROCESS can
             handle to 14.


04-10-93 ■ Version 0.1ß

           . Added code to handle the creation of temporary file
             when calculating the disk space required to decompress
             a compressed file.  (This eliminates the need for the
             ZTEMP.BAT file.)


04-06-93 ■ Version 0.0ß

           . Added code to handle all compression and decompression
             routines using information passed from ZIPRW.EXE.
             (This eliminates the need for the ZARJ, ZLHA, ZSQZ,
             ZPKZIP, and ZPKUNZIP .BAT files and their associated
             .PIF files.

           . Initial coding.