1 (Message inbox:40) 2 Date: Tue, 17 Jul 1990 11:56 EDT 3 From: swl26%CAS.BITNET (a] CORNELLC.cit.cornell.edu 4 Subject: Re(2): port of flex-2.3 to IBM/MVS 5 To: vern (a] cs.cornell.edu 6 7 >Message received. I'm sending this response to 8 >swl26%CAS.BITNET (a] CORNELLC.cit.cornell.edu. 9 10 Great -- we can talk. 11 12 >How extensive are the diffs? If they're fairly short then yes, please 13 >send them. If they're pretty involved then probably not, as I'm not aware 14 >of many MVS flex users ... 15 16 I've built a context diff file which is ~850 lines. 17 18 Summary of major changes necessary: 19 20 o a new initscan.c -- because MVS is ebcdic, the initial scanner had 21 to be changed. I built a scanner from scan.l using -Ce, then 22 hand-manipulated the yy_ec table to fit EBCDIC instead of ASCII 23 chars. (This is not included in the diff file above.) 24 25 o changes in main and flexdef.h to change how files are handled. (No 26 dynamic file names, etc.) 27 28 o Some lines had to be shortened to 80 bytes. This mostly impacted 29 your RCSID lines, which with the full path name were too long. 30 31 o SASC and the linker don't allow externals to be longer than 8 chars. 32 I thus wrote a Q&D program to shorten all externals. (This would be 33 a separate file 'fixit.l', which is not included in the diffs.) 34 35 o There are several places where there are tests for 'isascii' (which I 36 deleted conditionally, using #ifdefs), and tests for 'A' <= x <= 'Z' 37 which I changed to 'isupper'. 38 39 Many of the changes I've incorporated without impacting other systems. 40 Others are with 'ifdefs'. Still others (the short external names and new 41 initscan) are 'isolable' as separate files which would have to be 42 included with a distribution. 43 44 Obviously, you are not going to want to (even if you can :-) ) worry about 45 testing new versions in the MVS environment. Likewise, I don't have the 46 time or resources to provide much support. (I'm not sure my management 47 would allow any :-( ) 48 49 With all of the above feel free to say "Thanks, but no thanks." If you 50 want to see the diffs anyway, I will certainly mail them. 51 52 Thanks for your time and efforts. 53 54 Steve Layten 55 Chemical Abstracts Service, PO Box 3012, Columbus, OH 43210, +1 614 421-3600 56 INET: swl26%cas.BITNET (a] CUNYVM.CUNY.Edu 57
