57 lines
2.2 KiB
Text
57 lines
2.2 KiB
Text
|
(Message inbox:40)
|
||
|
|
Date: Tue, 17 Jul 1990 11:56 EDT
|
||
|
|
From: swl26%CAS.BITNET@CORNELLC.cit.cornell.edu
|
||
|
|
Subject: Re(2): port of flex-2.3 to IBM/MVS
|
||
|
|
To: vern@cs.cornell.edu
|
||
|
|
|
||
|
|
>Message received. I'm sending this response to
|
||
|
|
>swl26%CAS.BITNET@CORNELLC.cit.cornell.edu.
|
||
|
|
|
||
|
|
Great -- we can talk.
|
||
|
|
|
||
|
|
>How extensive are the diffs? If they're fairly short then yes, please
|
||
|
|
>send them. If they're pretty involved then probably not, as I'm not aware
|
||
|
|
>of many MVS flex users ...
|
||
|
|
|
||
|
|
I've built a context diff file which is ~850 lines.
|
||
|
|
|
||
|
|
Summary of major changes necessary:
|
||
|
|
|
||
|
|
o a new initscan.c -- because MVS is ebcdic, the initial scanner had
|
||
|
|
to be changed. I built a scanner from scan.l using -Ce, then
|
||
|
|
hand-manipulated the yy_ec table to fit EBCDIC instead of ASCII
|
||
|
|
chars. (This is not included in the diff file above.)
|
||
|
|
|
||
|
|
o changes in main and flexdef.h to change how files are handled. (No
|
||
|
|
dynamic file names, etc.)
|
||
|
|
|
||
|
|
o Some lines had to be shortened to 80 bytes. This mostly impacted
|
||
|
|
your RCSID lines, which with the full path name were too long.
|
||
|
|
|
||
|
|
o SASC and the linker don't allow externals to be longer than 8 chars.
|
||
|
|
I thus wrote a Q&D program to shorten all externals. (This would be
|
||
|
|
a separate file 'fixit.l', which is not included in the diffs.)
|
||
|
|
|
||
|
|
o There are several places where there are tests for 'isascii' (which I
|
||
|
|
deleted conditionally, using #ifdefs), and tests for 'A' <= x <= 'Z'
|
||
|
|
which I changed to 'isupper'.
|
||
|
|
|
||
|
|
Many of the changes I've incorporated without impacting other systems.
|
||
|
|
Others are with 'ifdefs'. Still others (the short external names and new
|
||
|
|
initscan) are 'isolable' as separate files which would have to be
|
||
|
|
included with a distribution.
|
||
|
|
|
||
|
|
Obviously, you are not going to want to (even if you can :-) ) worry about
|
||
|
|
testing new versions in the MVS environment. Likewise, I don't have the
|
||
|
|
time or resources to provide much support. (I'm not sure my management
|
||
|
|
would allow any :-( )
|
||
|
|
|
||
|
|
With all of the above feel free to say "Thanks, but no thanks." If you
|
||
|
|
want to see the diffs anyway, I will certainly mail them.
|
||
|
|
|
||
|
|
Thanks for your time and efforts.
|
||
|
|
|
||
|
|
Steve Layten
|
||
|
|
Chemical Abstracts Service, PO Box 3012, Columbus, OH 43210, +1 614 421-3600
|
||
|
|
INET: swl26%cas.BITNET@CUNYVM.CUNY.Edu
|