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-
- +----------------------------------------------------+
- | LHA Chunker, (C) Copyright 1991-92, Scott Jibben |
- | Version 1.00 |
- +----------------------------------------------------+
-
-
- This is a list of the files that should accompany this software
- package:
-
- LC.DOC - LHA Chunker Documentation.
- LC.EXE - LHA Chunker executable.
- DISTSAMP.DOC - Sample of a distribution license.
- SITESAMP.DOC - Sample of a site license.
- SITEINFO.DOC - Information and applications of licensing.
- LICENSE.DOC - License for LHA Chunker software.
- PRICE.DOC - Pricing guidelines for site/distribution licenses.
- ORDERFRM.DOC - The order form.
- CC-ORDER.DOC - Information to register by credit card.
- CATALOG.JSW - Information on Jibben Software Products.
- WHATSNEW.TXT - The Version History of LHA Chunker.
-
-
- What this software does
-
- This software is a file splitting utility. It supports two modes of
- operation.
-
- 1. It can split ANY type of file to a desired size creating multiple
- files with the AS file extension. These file will be exactly the
- size requested except for the last file created. Using this mode of
- operation you will be able to split any file to your requirements.
- The only disadvantage of using this method is that you will have to
- use LHA Chunker ( or Archive Sizer ) to "reassemble" the files back
- to the original file.
-
- 2. It can split files created by the LHA software to your desired
- size. This will create multiple files that retain compatibility
- with the LHA software. The only disadvantage to using this method
- is if the internal compressed files are larger than the requested
- size. LHA Chunker can't force the files to be smaller and retain
- compatibility. In this case it is recommended to use method 1.
-
- The only compression software files that LHA Chunker supports is:
-
- LHA created by Haruyasu Yoshizaki's LHA software.
-
-
-
- Requirements for LHA Chunker
-
- LHA Chunker allocates memory as needed when processing. However, I
- suggest that you have at least 200KB of free memory to run it.
- If you are going to process large LHA files (with a lot of files, not
- total size), I suggest that you have 400KB of free memory to run LHA
- Chunker.
-
-
- Installation Instructions
-
- It is relatively simple to install LHA Chunker. All you have to do
- is copy the files to a subdirectory that is listed in your PATH
- statement in your AUTOEXEC.BAT file. You could also just create a
- new subdirectory, copy the files there, and then add the new sub-
- directory to the PATH statement. I won't go into the details of making
- subdirectories and modifying your path as you should have good examples
- of this in your DOS manual.
-
-
-
-
- The concept of Shareware
-
- LHA Chunker is being released as a Shareware product. Shareware is
- a marketing concept, in which you get to try out a software package
- for a period of time. If you find that the software is useful
- to you (you are still using it), you are obligated to send in a
- registration fee for that software to the author.
-
- LHA Chunker's trial period is 21 days. That means, once you start
- using LHA Chunker, you have 21 days to decide whether or not it is
- useful to you. If it is useful to you, please promptly send in the
- requested registration fee. If it is not useful to you, you are
- expected to delete it and stop using it.
-
- LHA Chunker is fully functional. However, it has a message that will
- appear every time it is used to size or reassemble files.
-
- Here's what you get when you register (Please use ORDER.FRM to order
- this software):
-
- 1. Support. You can call and leave e-mail to me on any of the BBS'
- listed in the Technical Support section of this document or
- CompuServe and get a response from me. I will more than likely
- answer all questions, but the registered individuals will
- definitely get top priority. You will also receive unlimited
- telephone support for the program. Registered users will get a
- phone number that they will be able to use to receive support
- between the hours of 6:00 pm - 10:00 pm (Central Standard Time)
- Monday-Friday.
-
- 2. You will receive a disk with the most recent version of LHA
- Chunker. The software will also have the registration reminder
- screen removed. Your name and serial number will also be displayed
- when the software is run.
-
- 3. Special access to new products. You will be allowed access to
- beta test any software package that I'm in the process of creating.
- The beta software will be available on the Warehouse BBS and
- CompuServe. Also, you must make arrangements with Jibben Software
- to get access to the new software. (see Technical Support section
- of this document for details).
-
- 4. You will also have low cost upgrades of this software.
-
-
-
- Advantages of Using LHA Chunker
-
- I've designed LHA Chunker to make the least demands on your
- hardware. It is the fastest file splitting utility available (not
- counting other Jibben Software products).
-
- One other benefit from using LHA Chunker is the amount of disk
- space it requires to process an archive file. It uses the absolute
- minimum disk space that is required to process a file. LHA Chunker
- automatically determines the disk space required and will tell you if
- you don't have enough BEFORE you create the files.
-
- The algorithm in which I calculate the amount of files to put in a
- archive file is highly optimized. LHA Chunker will sometimes have
- one less file than other software packages of this type and the files
- will be closer to the requested size.
-
- LHA Chunker can handle any file created using LHA. One of my beta
- testers ran LC on a 170 Megabyte LHA file and LC processed it without
- problems.
-
- Archive Sizer and LHA Chunker are the only software packages that I
- know of that supports the LHA file format as well as any file sizing.
-
-
-
- Using LHA Chunker
-
- The software is fairly straight-forward and easy to use. In fact,
- I doubt that you will need to read this document in order to be
- able to use the software. LHA Chunker will always display all of
- your options when you just type in LC and press Enter. The
- following is a list of the options with their descriptions. Since
- there are two modes of operating LC, I've listed the examples for
- these modes separately following the parameter descriptions.
-
-
- +------------------------+
- | Parameter Descriptions |
- +------------------------+
-
- [/L] - This option causes LHA Chunker to display its license
- information and information about contacting the author
- for support.
-
- [file] - This parameter is to be replaced with the name of the file
- that you wish to size. If there is an LHA file in the
- location that you've specified, LC will be able to detect
- the file by the files extension. Therefore, you would be
- able to just type in ARCFILE instead of ARCFILE.LZH. If
- you specify a file that doesn't have LZH for the file
- extension, LC will default to the AS file format. You can
- also 'force' this method of sizing with the /A option.
- Also, if you specify just an AS file, (no other
- parameters), LC will report information on the AS file.
-
- [max size] - This is option is used for specifying the maximum size of
- the files that you wish to create. LC will use this
- value in attempting to keep your files a certain size or
- smaller. There are several ways to specify this size.
- The first is to just specify a size in bytes, like 200000.
- Note that there are NO commas in this number. The other
- two methods are 'preset' values for floppy disk sizes.
- The old Zip Chunker presets are available, /5L, /5H, /3L,
- and /3H. There is also a new one called /3E for the new
- 2.88MB floppy disks. The last method is using the /S:
- option. After /S: you specify the size of the floppy that
- you wish to size to. The list of different options is
- listed on the info screen. For example, to size for a
- 3.5" high density floppy, the option would be /S:1.44.
- The default [max size] is 1.44MB.
-
- [/E] - Using this option will cause LHA Chunker to erase the
- original LHA file. This only works for LHA files.
- NOTE: It has been disabled for AS files.
-
-
- +------------------------+
- | Parameter Descriptions |
- +------------------------+
-
- [/F] - This option is only valid for LHA files, NOT AS files. It
- is used to make LC size the resulting files so that when
- the new files are uncompressed they will fit on the [max
- size] that you specified using a floppy size. Note: this
- only works when using a valid floppy disk preset (see the
- [max size] option).
-
- [/D:path] - This option is used to tell LC where to put the files that
- it creates. This is how you tell LC to put the new files
- on a floppy disk. LC will prompt you to put in a new
- floppy disk when it is needed. You can also use this
- option to put the files on another hard disk or
- sub-directory. It will work as long as you provide a
- valid destination. Note: when using this option with a
- floppy disk size preset (see [max size] option), the disk
- must be able to support the size you requested. Also,
- when sizing to a floppy drive, make sure you have enough
- blank, formatted disks available for the process.
-
- [/A] - This option is used for 'force' sizing the file into an AS
- file. This is helpful if you want to size an LHA file to
- fit on a floppy when there are internal files that are
- larger than the disk size you are attempting to size for.
-
- [/R] - This option is used to reassemble AS files back to the
- original file. It is simple to use. Just supply one of
- the AS filenames and this option and LC will reassemble it
- back together.
-
- [/M] - This option will report the smallest allowable value for
- [max size]. It is useful for determining the value that
- you can use for [max size] before making the attempt to
- size a file.
-
- [/N] - This option will report the number of new files that will
- be created without actually creating them.
-
- [/T] - This option will allow LHA Chunker to use the current
- date and time for the new files that are created.
-
-
- +----------+
- | Examples |
- +----------+
-
- For All Types of Files
- ----------------------
-
- C:\WORK>LC
-
- The example above will display LHA Chunker's Information screen. This
- displays all the available command line options.
-
-
- C:\WORK>LC \L
-
- The example above will display LHA Chunker's license information. It
- also displays information about support BBS and the authors CompuServe
- ID.
-
-
- C:\WORK>LC workdata /m
-
- The example above will display the smallest allowable size for the [max
- size] parameter for sizing.
-
-
- C:\WORK>LC file 500000 /n
-
- The example above will display the number of new files that will be
- created when sizing the file. It doesn't actually size the file.
-
-
- C:\WORK>LC myfile 500000 /t
-
- The example above will size myfile to be 500,000 bytes and will use the
- current system date and time on the files.
-
-
- +----------+
- | Examples |
- +----------+
-
- For LHA Files
- -------------
-
- Here are some examples on the use of LC for archive files:
-
- C:\WORK>LC workdata
-
- The above example will break out files from WORKDATA.LZH that will
- be equal to or smaller than the size of a file that would fit on a
- 3.5" HD disk. It will also save the original file.
-
-
- C:\WORK>LC 123data.LZH /5L /E
-
- The above example will break out files from 123DATA.LZH and these
- files will be equal to or smaller than what would fit on a 5.25"
- low density disk. It will delete 123DATA.LZH when it is done.
-
-
- C:\WORK>as 123data.LZH /S:360 /E
-
- The above example will work exactly as the previous example. The only
- difference is the use of the /S: parameter instead of /5l.
-
-
- C:\TELIX\UL>LC e:\games\biggame.LZH 200000
-
- The above example will break out files from E:\GAMES\BIGGAME.LZH
- and these files will be equal to or smaller than 200,000 bytes.
- The original file, E:\GAMES\BIGGAME.LZH, will be saved as well.
- Also, the new LHA files will be created in C:\TELIX\UL.
-
-
- C:\EXCEL\XLS>LC XLSHEETS.LZH /s:1.44 /d:a:
-
- The above example will break out files from XLSHEETS.LZH. The new
- files will fit on a 1.44MB floppy. The files will be created on
- drive A:. When the floppy is filled with a file, LHA Chunker will
- prompt for a formatted blank disk for the next file. The original
- file will be saved. This process requires NO hard disk space, only
- formatted blank floppy disks. Also, LC will check to determine if the
- size you specified matches type of floppy hardware is available. At
- any prompt you can press Esc to abort the process.
-
-
- +----------+
- | Examples |
- +----------+
-
- C:\CLIPART\PICS>LC CA-PICS.LZH /s:1.44 /f
-
- The above example will break out files from CAP-PICS.LZH. The new LHA
- files when uncompressed will fit on a 1.44MB floppy disk. The original
- file will be saved. This process requires NO hard disk space, only
- formatted blank floppy disks. Also, LC will check to determine if the
- size you specified matches type of floppy hardware is available. At
- any prompt you can press Esc to abort the process.
-
-
-
-
- For AS Files
- ------------
-
- C:\WORK>as bigdb-1
-
- The above example will display the AS file information for the
- BIGDB-1.AS file. Note: the file extension is optional.
-
-
- C:\WORK>as bigdata.db
-
- The above example will size the BIGDATA.DB file into AS files. The new
- AS files will be created in the C:\WORK directory. BIGDATA.DB will not
- be erased when processing is completed.
-
-
- C:\WORK>as data.LZH /a
-
- The above example will size the DATA.LZH file into AS files. The new
- AS files will be created in the C:\WORK directory. Note: the /A option
- over-rides the normal LHA file sizing. DATA.LZH will not be erased
- when processing is completed.
-
-
- C:\WORK>as bigdata.db /d:a: /s:1.44
-
- The above example will size the BIGDATA.DB file into AS files. The new
- AS files will be created on the A: drive (if A: is a 1.44MB drive).
- LHA Chunker will prompt for new disks. This option requires NO hard
- disk space for processing. BIGDATA.DB will not be erased when
- processing is completed.
-
-
- +----------+
- | Examples |
- +----------+
-
- C:\WORK>as bigdb-1 /r
-
- The above example will reassemble the AS files in the BIGDB-#.AS series
- of file names.
-
-
- C:\WORK>as bigdb-3 /r
-
- The above example will reassemble the AS files in the BIGDB-?.AS series
- of file names. Note: LHA Chunker will start at the first file name
- in the series even though the file above is not the first file.
-
-
- C:\WORK>as bigdb-1 /r /d:d:\access
-
- The above example will reassemble the AS files in the BIGDB-?.AS series
- of file names. The created file will be placed in the D:\ACCESS
- directory.
-
-
- C:\WORK>as a:bigdb-1 /r
-
- The above example will reassemble the AS files in the BIGDB-?.AS series
- of file names from the A: floppy drive. LC will prompt for each
- disk in the series to reassemble the file. The created file will be
- placed in the C:\WORK directory.
-
-
-
-
-
- Miscellaneous
-
- LHA Chunker will not allow you to process a file if there isn't
- enough free disk space available.
-
- If LHA Chunker finds a file in the original archive file that is
- larger than the maximum size specified, it will give you the option of
- continuing to process the archive file. The result of this type of
- operation is that there will be some files that have only one file in
- them but they will still be larger than the maximum size.
-
- If the original file is already smaller than the maximum size then
- LHA Chunker will tell you and not process the file.
-
- LHA Chunker will in most cases be able to detect that a file passed
- to it is a valid LHA file or not. It will not be able to detect if
- the internal files have been corrupted, though.
-
-
- +--------------------------------+
- | LHA Chunker Programming Info |
- +--------------------------------+
-
-
- LHA Chunker will return the following DOS Error Levels when it
- aborts in an error state:
-
- 1. Out of memory.
- 2. Incorrect [max size] for floppy drive specified.
- 3. Can't open file.
- 4. Reserved.
- 5. Reserved.
- 6. File version isn't compatible.
- 7. File is already an *.AS file.
- 8. The requested max size will create too many files.
- 9. File is not an *.AS file.
- 10. Process aborted.
- 11. There isn't enough disk space available to process file(s).
- 12. The internal data of this *.AS is corrupt/invalid.
- 13. Reserved.
- 14. Lzh file is corrupt/invalid.
- 15. A file exists that AS wanted to create.
- 16. Couldn't find the requested file.
- 17. The file name given isn't specific enough.
- 18. The [max size] value is invalid.
- 19. Reserved.
- 20. Reserved.
- 21. Reserved.
- 22. Reserved.
- 23. Unknown/All other errors.
-
-
- This is the format of AS files (in C notation):
-
- struct as_header {
- unsigned long signature; // always 0x10af5341
- unsigned int version;
- char file_name[13];
- struct ftime file_date_time; // Borland C++ ftime struct
- int file_attributes;
- unsigned long this_file_size;
- unsigned long total_file_size;
- unsigned long this_file_num;
- unsigned long total_file_num;
- unsigned long crc32;
- unsigned long original_crc32;
- };
-
- This header will always be present at the beginning of an AS file.
-
-
-
- Technical Data
-
- LHA Chunker was written entirely in C/C++ using Borland C++ 3.1.
- This is a partial explanation of LC's speed and size. The other main
- reason for LC's speed and size is that I access the LHA file directly
- vs. making calls to the LHA software.
-
-
- Technical Support
-
- For technical support I (Scott Jibben) can be reached at the following
- on-line systems:
-
- The Warehouse BBS: 612-379-8272 1200-57600 baud V.32bis/HST 16.8K
- (N81) - 6 Lines. The Warehouse is my first (main) line of support.
- Since I am a co-sysop of this BBS, I usually log on several times a day
- to check for email. This BBS is a subscription BBS, however anyone
- logging on will receive access rights to the file area where my
- software can be downloaded for FREE and a message area that is
- dedicated to my software.
-
- Terrapin Station BBS: 612-623-0152 1200-9600 V.32 (N81)
- Terrapin Station is the second home for LHA Chunker. This BBS is
- used by many professional computer people. One of it's focal points is
- programming, but there are several other topics that are discussed on
- this BBS. I usually check into this BBS at least once a day.
-
- Painters Workshop BBS: 414-722-0242 1200-14400 V.32bis/HST (N81)
- Painters Workshop is Distribution Site #00 3 for Jibben Software. If
- you need help with Jibben Software products the sysop, Duane Heller
- will be able to help you. I log onto this BBS once every two weeks.
- Duane contacts me at least once a week.
-
- CompuServe:
- My CompuServe ID is 72657,3303. Feel free to send me an E-Mail any
- time. I usually log on to CompuServe at least once a day.
-
-
-
- Acknowledgments
-
-
- I would like to thank those people that have assisted me in the
- development of this software:
-
- Travis Carter, sysop of the Warehouse BBS, for testing the software
- and providing a message forum for supporting software written by
- me.
-
- Howard Ekman, sysop of Terrapin Station DBBS, for providing a second
- home for LHA Chunker.
-
- Keith Ledbetter, author of the BEST file finding utility money can
- buy; Supersonic Search Tool (SST), for providing valuable information
- about the internal file formats of several archiving software
- packages. This saved me valuable time and effort.
-
- Kenjirou Okubo and Haruyasu Yoshizaki (Author of LHA) for testing LC to
- ensure it works properly with LHA archive files.
-
- My wife, for the patient support and active involvement in getting
- this business rolling.
-
- Finally, all of the people who've registered my software. I really
- appreciate it!
-
-
-
-
- Disclaimers, etc.
-
-
- Jibben Software specifically disclaims all other warranties, expressed
- or implied, including but not limited to implied warranties of
- merchantability and fitness for a particular purpose, functionality or
- data integrity. In no event shall Jibben Software be liable for any
- loss of profit or any other commercial damage, including but not
- limited to special, incidental, consequential or other damages.
-
-
-
- Borland is a registered trademark of Borland International, Inc.
-
-
-