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David Sde
New User
Joined: 24 Apr 2011
Posts: 23
Location: USA
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Hi,
I hope someone can help me. I'm having trouble figuring out to to use VER to validate an ISPF panel field. This is a 16-character field, defined with CAPS(ON), which must be of a particular format. The first n characters must be uppercase alphabetic (A-Z), followed by a single hyphen, followed by m numeric characters (0-9). Trailing blanks are okay, but embedded blanks are not.
E.g., these are okay:
ABC-1234
A-9
ABCDEF-01234
These are invalid:
I couldn't figure out how to write the VER statement to enforce these rules (or if it's even possible), because the number of alphabetic characters preceding the hyphen isn't fixed, nor is the number of digits following the hyphen. Can anyone provide any guidance?
Thanks so much,
David |
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daveporcelan
Active Member
Joined: 01 Dec 2006
Posts: 669
Location: Pennsylvania
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What I have done when the VER statement does not suit my needs is pass the value to an instream Rexx process.
This Rexx can be as complex as you need it.
If it is valid I set my valid return value to the original, otherwise I set it to something else.
I do a simple VER when I return.
See a small example here:
| Code: |
ED = 'ABC-1234'
*REXX (ED,VALSW)
IF ED = YADAYADA THEN VALSW = ED
ELSE VALSW = 'XXXXX'
*ENDREXX
VER (ED,NB,LISTV,&VALSW,MSG=SPECMSG) |
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enrico-sorichetti
Global Moderator
Joined: 14 Mar 2007
Posts: 10274
Location: italy
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here is a snippet to check for Your formats
| Code: |
****** ***************************** Top of Data ******************************
000001 /*REXX - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
000002 /* */
000003 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
000004 Trace "O"
000005
000006 line.1 = "ABC-123"
000007 line.2 = "ABC"
000008 line.3 = "123"
000009 line.4 = "ABC-"
000010 line.5 = "-123"
000011 line.6 = "AB -123"
000012 line.7 = "ABC- 23"
000013 line.8 = "abc-123"
000014 line.9 = "ABC-1"
000015 line.0 = 9
000016
000017 do l = 1 to line.0
000018 err = valid
000019 do 1
000020 if pos(" ", line.l) > 0 then do
000021 err = "Embedded blanks"
000022 leave
000023 end
000024
000025 if pos("-", line.l) = 0 then do
000026 err = "missing '-'"
000027 leave
000028 end
000029
000030 parse var line.l alf "-" num
000031
000032 if alf = "" then do
000033 err = "missing alf"
000034 leave
000035 end
000036
000037 if num = "" then do
000038 err = "missing num"
000039 leave
000040 end
000041
000042 if \datatype(alf,"U") then do
000043 err = "not upper case"
000044 leave
000045 end
000046
000047 if \datatype(num,"N") then do
000048 err = "not numeric"
000049 leave
000050 end
000051
000052 end
000053
000054 say right(l,2) left(line.l, 20) err
000055
000056 end
000057
000058 Exit 0
000059
****** **************************** Bottom of Data ****************************
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the result
| Code: |
1 ABC-123 VALID
2 ABC missing '-'
3 123 missing '-'
4 ABC- missing num
5 -123 missing alf
6 AB -123 Embedded blanks
7 ABC- 23 Embedded blanks
8 abc-123 not upper case
9 ABC-1 VALID
***
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David Sde
New User
Joined: 24 Apr 2011
Posts: 23
Location: USA
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Many thanks to both of you; this is great!
David |
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