| (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 |
