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-
- Unix System V ARC Version 1.1
-
-
- This is a COMPLETE (I hope!) version of PC ARC v5.12, ported to System V.
- It contains as much of the functionality of PC ARC as I could incorporate,
- and fixes all known bugs.
-
- Version 1.1 is based on the version posted to the net by Mike Stump,
- with several fixes and enhancements, as well as some general clean-up.
-
- Some enhancements:
-
- Timestamping - arc will now stamp file upon extraction with the
- date and time contained in the header. This feature may cause
- some discomfort with the recent change in Daylight Savings Time.
-
-
- Full wildcard/pattern matching - arc will take over for the shell
- if it receives standard shell-type wildcards and/or patterns.
- Remember, though, that the shell will always try to expand what
- it can FIRST, so if you explicitly want arc to do expansion,
- quote the arguments. Also, arc will NOT search for real files
- based on wildcard matches. I have left that under shell control;
- i.e., typing:
-
- arc -v "*.c"<RETURN>
-
- will work whether or not real files exist that match the pattern,
- but typing:
-
- arc -a "*.c"<RETURN>
-
- will report that file '*.c' was not found.
-
-
- 14 character file name entries - by default arc now supports
- full 14 character file names in its entries. This will, however,
- cause the archive to be incompatible with PC ARC, so I have
- added an option ('i') to truncate file names to the standard
- PC limit of 12 characters. Archives created with this option are
- FULLY compatible with PC ARC.
-
-
- Some Bug Fixes:
-
- An archive will no longer try to archive itself, even if it is
- explicitly requested from the command line. However, an archive
- with a similar name, but in a different directory, can be added.
-
- Arguments passed to arc are now sorted, eliminating the
- possibility of duplicate entries for the same file in an archive.
- The arguments are also checked for duplicates, so it is impossible
- to add the same file name from multiple directories. Only the
- first occurence is used.
-
- Arc will not core dump if any of the file name arguments cannot
- be found.
-
- Arc now cleans up after itself if it is aborted early. Also,
- no damage will be done to the archive if arc is aborted.
-
-
- Cleanup:
-
- I tried my best to make the code uniform, removed some unused
- variables and functions, and added/changed some of the comments.
-
- I ran the resulting code through lint, which still considers
- the code somewhat inconsistent, but otherwise acceptible,
- with the exception of 'arclzw.c'. Oh well, we can only do
- so much...
-
-
- Known limitations:
-
- Ther is a REMOTE possibility that an archive can become corrupted
- if the IBM(TM) PC compatibility option ('i') is used/not used when it
- should/shouldn't be. This only happened to me once out of 150+
- archives, and even that was during the early stages of the cleanup.
- As a rule, if I can't remember whether or not the 'i' option was
- used, I simply test the archive in questoion. Testing an archive
- can do NO damage to it.
-
-
- This code has been thoroughly (if there is such a thing) tested on an
- AT&T 3B5, 3B15, 3B2/300, and 3B2/400, running SYS V release 2 and release 3.
-
- I tried to keep things fairly portable, though I am not that familiar with
- BSD. I imagine that most things should work (I did change all the 'rindex'
- calls to 'strrchr', sorry BSD), but I imagine that the setstamp() function
- is fairly System V dependent. In any event, I will cheerfully listen to
- any reports of bugs and/or fixes, and will try to maintain the code as well
- as I can.
-
- Chris Seaman
- {ihnp4, rtech}!cpsc6a!crs
-