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- =====( UnPack V0.21 )==============================================
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- Trion 'Unpack' Utility.
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- (c) Copyright Paul Spijkerman, '96-'98. All rights reserved.
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- Written for use with the Trion BBS package.
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- ===================================================================
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- Unpack is a simple Shell userinterface (frontend) for archiver programs.
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- Adds wildcards to archivers without wildcards.
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- Do you ever wanted to Unarchive a lot of ARJ archives and
- discovered that 'unarj' doesn't support wildcards.
- So you have to type all the names in shell to extract.
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- Now you just type 'Unpack e #?'
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- (same goes for RAR, ARC and others)
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- Unpacking in one pass of different types of archives.
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- Did you ever had a directory of Archives you wanted to
- Unarchive and discovered you needed a different programm
- for each archive.
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- Now you just type 'Unpack e #?'
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- Did you ever had archives without extensions so you didn't
- knew what type they where.
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- Now you just type 'Unpack i #?'
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- Did you ever got a new type of archive (like RAR or LZX)
- and forget how to operate the new different archiver.
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- Now you just type 'Unpack e #?'
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- You have to remember 1 command to Unarchive or view archives.
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- With 'Unpack l #?' you can view archives.
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- Unpack uses the 'trion:cfg/unpack.cfg' for it's data about
- archivers, but it can also be placed in S: for systems
- without the BBS package on disk.
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- Unpack works by comparing the first 10 bytes of the
- archive with bytes suplied in the configuration to
- find out what type of archive we are handling.
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- Note that the 'recognition' codes of some archives not
- always start on position zero .. so for the first bytes
- without any meaning for the recognition code you can
- suply a "??" .. so the programm knows that byte
- doesn't matter.
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- Note that Unpack is stopable with Ctrl-C.
- This works in the list modes , but when it starts programmas
- like LHA they sook up all the Ctrl-C's .. because the machine
- is so quick. At the moment you type the next Ctrl-C Unpack
- has already started the next programm. So you end up terminating
- all started programmas until the end of the dir has been reached.
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- The default version of the Unpack configuration file also
- contains code to recognize IFF, JPEG and GIF files.
- Which can be usefull
- if you have a load of files without (proper) extensions.
- It also shows the pictures in Unpack mode.
- It has one drawback .. when there are archives in the same dir
- they are Unpacked.
- (Maybe a PicView mode would be nice, have to think about the
- usefullness and future of this util)
- But it also has some advantages .. cause I use ViewTek to
- show pictures, but when ViewTek shows the next picture it
- still shows the previous. I have only 512K of chip mem. so
- big pictures are a problem. With Unpack ViewTek shows
- 1 picture at a time and saves a lot of chip mem.
- Because I have an OCS (old) chipset ViewTek shows pictures only
- in 16 colors and always in hires/interlace .. even if they are
- very small. You can fix this by typing 'LO NL' on the command
- line when using ViewTek. But it's more work and people forget
- quick .. so it's usefull when it's done for you with Unpack :)
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- The recognition of picture files is used in the ViewArchive
- script .. if the BBS couldn't findout the type of the
- archive the ViewArchive script starts Unpack .. if
- the file is indeed a picture .. unpack will start Viewtek
- and Viewtek will give the resolution and depth of the
- picture.
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- Unpack is used by typing a command at the command line
- with an archive name or a wildcard.
- And an optional path when in extract mode.
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- Usage: Unpack command [-options] archive [path]
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- commands:
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- E, X = Extract archives.
- L = List archives.
- I = Info on archive types.
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