zOs/REXX/EXPDS
call syscalls on
address sysCall 'readdir' "//'a540769.wk.rexx'" dd.
say rc dd.0
do i=1 to dd.0
say i dd.i
end
exit
say i.0 i.1
call err 'wie gehts'
/* copy adrTso begin *************************************************/
/*--- send ggTsoCmd to tso, fail if rc <> 0 or not listed in ggRet ---*/
adrTso:
parse arg m.tso_stmt, ggRet
call outtrap m.tso_trap.
address tso m.tso_stmt
m.tso_rc = rc
call outtrap off
if m.tso_rc == 0 then
return 0
m.tso_trap = ''
do ggXx=1 to min(7, m.tso_trap.0)
m.tso_trap = m.tso_trap'\n'strip(m.tso_trap.ggXx)
end
if m.tso_trap.0 > 7 then do
if m.tso_trap.0 > 14 then
m.tso_trap = m.tso_trap'\n............'
do ggXx=max(8, m.tso_trap.0-6) to m.tso_trap.0
m.tso_trap = m.tso_trap'\n'strip(m.tso_trap.ggXx)
end
end
if ggRet <> '*' & wordPos(m.tso_rc, ggRet) <= 0 then
call err 'adrTso rc=' m.tso_rc 'stmt='m.tso_stmt m.tso_trap
return m.tso_rc
endSubroutine adrTso
/*--- format dsn from tso format to jcl format -----------------------*/
dsn2jcl: procedure expose m.
parse upper arg dsn ., addPrefix
if left(dsn,1) = "'" then
return strip(dsn, 'b', "'")
sp = sysvar('SYSPREF')
if sp == '' then
sp = userid()
cx = pos('~', dsn)
if cx < 1 & addPrefix == 1 then
return sp'.'dsn
do while cx \== 0
le = left(dsn, cx-1)
ri = substr(dsn, cx+1)
if right(le, 1) == '.' | left(ri, 1) == '.' then
dsn = le || sp || ri
else
dsn = le || left('.', le \== '') || sp ,
|| left('.', ri \== '') || ri
cx = pos('~', spec, cx)
end
return dsn
endProcedure dsn2Jcl
/*--- format dsn from jcl format to tso format -----------------------*/
jcl2dsn: procedure expose m.
parse arg dsn .
return "'"dsn"'"
endProcedure jcl2dsn
dsnSetMbr: procedure expose m.
parse arg dsn, mbr
bx = pos('(', dsn)
if bx > 0 then
dsn = strip(left(dsn, bx-1))
if mbr <> '' then
dsn = dsn'('strip(mbr)')'
return dsn
endProcedure dsnSetMbr
dsnGetMbr: procedure expose m.
parse arg dsn
lx = pos('(', dsn)
rx = pos(')', dsn, lx+1)
if lx < 1 then
return arg(2)
else if lx < rx then
return substr(dsn, lx+1, rx-lx-1)
else
return strip(substr(dsn,lx+1))
endProcedure dsnGetMbr
/**********************************************************************
io: read or write a dataset with the following callsequences:
read: tsoOpen...'R', readDD*, tsoClose
write: tsoOpen...'W', writeDD*, tsoClose
readDD returns true if data read, false at eof
do not forget that open is mandatory to write empty file|
***********************************************************************/
/*--- open dd for read (rw='R') or write (rw='W') --------------------*/
tsoOpen: procedure expose m.
parse upper arg dd, rw
return adrTso('execio' 0 'disk'RW dd '(open)')
return /* end tsoOpen */
/*--- close dd -----------------------------------------------------*/
tsoClose: procedure expose m.
parse upper arg dd
return adrTso('execio 0 diskR' dd '(finis)')
endProcedure tsoClose
/*--- read from DD ggDD into ggSt, return false at eof ---------------*/
readDD:
parse arg ggDD, ggSt, ggCnt
if ggCnt = '' then
ggCnt = 100
call adrTso 'execio' ggCnt 'diskR' ggDD '(stem' ggSt')', 2
return (value(ggSt'0') > 0)
return /* end readDD */
/*--- write to gg ggDD from stem ggSt, ggCnt records -----------------*/
writeDD:
parse arg ggDD, ggSt, ggCnt
if ggCnt == '' then
ggCnt = value(ggst'0')
call adrTso 'execio' ggCnt 'diskW' ggDD '(stem' ggSt')'
return
endSubroutine writeDD
/*--- readNx: read next line, using buffer ---------------------------*/
/*--- begin: allocate dsnSpec and ini ------------------------ -------*/
readNxBegin: procedure expose m.
parse arg m, m.m.dsn, m.m.dd, m.m.Cnt
if m.m.dd = '' then
m.m.dd = 'DDNX*'
if m.m.cnt = '' then
m.m.cnt = 1000
m.m.cx = m.m.cnt + 999
m.m.buf0x = 0
m.m.0 = 0
parse value dsnAlloc('dd('m.m.dd')' m.m.dsn) with m.m.dd m.m.free
call tsoOpen m.m.dd, 'R'
return m
endProcedure readDDNxBegin
/*--- return the stem of the next line, or '' at end -----------------*/
readNx: procedure expose m.
parse arg m
m.m.cx = m.m.cx + 1
if m.m.cx <= m.m.0 then
return m'.'m.m.cx
m.m.buf0x = m.m.buf0x + m.m.0
if \ readDD(m.m.dd, 'M.'m'.', m.m.cnt)then
return ''
m.m.cx = 1
return m'.1'
endProcedure readDDNx
/*--- return the stem of the curr line, '' at end --------------------*/
readNxCur: procedure expose m.
parse arg m
if m.m.cx <= m.m.0 then
return m'.'m.m.cx
else
return ''
endProcedure readNxCur
/*--- return the position (line number) of reader
plus le characters of the current line (default 50) ------*/
readnxPos: procedure expose m.
parse arg m, le
li = m'.'m.m.cx
li = strip(m.li, 't')
if arg() < 2 then
le = 50
if le < 1 then
li = ''
else if length(li) <= le then
li = ':' li
else
li = ':' left(li, le-3)'...'
return 'line' (m.m.buf0x + m.m.cx)li
endProcedure readnxPos
/*--- close and deallocate ------------------------------------------*/
readNxEnd: procedure expose m.
parse arg m
call tsoClose m.m.dd
call tsoFree m.m.free
return
endProcedure readDDNxEnd
/*--- standardise a dsn spec
word1 dsName or -
word2 dd or -
word3 disp or -
word4 to first : attributes in tso format
after first : attributes for new allocation
----------------------------------------------------------------------*/
dsnSpec: procedure expose m.
parse upper arg spec
rr = '' /* put leading - in separate words */
do sx=1 while words(rr) < 3 & wx \= ''
wx = word(spec, sx)
do while abbrev(wx, '-') & words(rr) < 3
wx = substr(wx, 2)
rr = rr '-'
end
rr = rr wx
end
spec = rr subWord(spec, sx)
na = ''
dd = ''
di = ''
if left(spec, 1) = '&' then /* external spec is handled ok */
spec = strip(substr(spec, 2))
do wx=1 by 1
w = word(spec, wx)
if w = '' | abbrev(w, '.') | abbrev(w, ':') then
leave
else if wordPos(w, 'OLD SHR MOD NEW')>0 | abbrev(w, 'SYSO') then
di = w
else if w == 'CATALOG' | w == 'CAT' then
di = di 'CAT'
else if abbrev(w, 'DD(') then
dd = substr(w, 4, length(w)-4)
else if abbrev(w, 'DSN(') then
na = strip(substr(w, 5, length(w)-5))
else if na == '' then
na = dsn2jcl(w)
else if pos('(', w) > 0 then
leave
else if dd == '' then
dd = w
else if di == '' then
di = w
else
leave
end
if na == '' then
na = '-'
else if abbrev(na, "'") then
na = substr(na, 2, length(na)-2)
if dd == '' then dd = '-'
if di == '' then di = '-'
re = subword(spec, wx)
if abbrev(re, '.') then
re = substr(re, 2)
return na dd di re
endProcedure dsnSpec
/*--- alloc a dsn with dsnAlloc
if the dsn is inuse wait and retry
until either the allocation is successfull
or the timeout occurs --------------------------------------*/
dsnAllocWait: procedure expose m.
parse upper arg spec, pDi, pDD, timeOut
x = max(1, arg() - 1)
do rt=0
m.tso_trap.1 = ''
m.tso_trap.2 = ''
m.tso_trap.3 = ''
res = dsnAlloc(spec, pDi, pDD, '*')
if \ datatype(res, 'n') then
return res
msg = m.tso_trap.1'\n'm.tso_trap.2'\n'm.tso_trap.3
if rt > timeOut & timeOut \== '' then
return err('timeout allocating' spec time() '\n'msg)
if pos('DATA SET IS ALLOCATED TO ANOTHER', msg) < 1 then
return err('allocating' spec'\n'msg)
say time() 'sleep and retry alloc' spec
call sleep 1, 0
end
endProcedure dsnAllocWait
/*--- alloc a dsn or a dd
spec '-'<ddName>
datasetName? disposition? '.'? attributes? (':' newAtts)?
disp default disposition
dd default dd name
retRc erlaubte ReturnCodes (leer = 0)
returns if ok then ddName <rexx for free> otherwise rc -----*/
dsnAlloc: procedure expose m.
parse upper arg spec, pDi, pDD, retRc
parse value dsnSpec(spec) with na dd di rest
if dd == '-' & pDD \== '' then
dd = pDD
if dd == '-' then
dd = 'DD*'
dd = tsoDD(dd, 'a')
m.tso_dsn.dd = ''
if na == '-' & di == '-' & rest = '' then
return dd
if di = '-' then
if pDi == '' then
di = 'SHR'
else
di = pDi
if pos('(', na) < 1 then
nop
else if di = 'MOD' then
call err 'disp mod for' na
else
di = 'SHR'
if lastPos('/', na, 6) > 0 then
rx = csmAlloc(na dd di rest, retRc)
else
rx = tsoAlloc(na dd di rest, retRc)
if rx = 0 then
return dd dd
else
return rx
endProcedure dsnAlloc
/*--- find a free dd with prefix dd ----------------------------------*/
tsoDD: procedure expose m.
parse upper arg dd, f, noErr
if symbol('m.tso_ddAll') \== 'VAR' then do
call errIni
m.tso_ddAll = ''
end
if f == '-' then do
ax = wordPos(dd, m.tso_ddAll)
if ax > 0 then
m.tso_ddAll = delWord(m.tso_ddAll, ax, 1)
else if noErr \== 1 then
call err 'tsoDD dd' dd 'not used' m.tso_ddAll
end
else if f <> 'A' then
call err 'tsoDD bad fun' f
else do
if right(dd, 1) = '*' then do
d0 = left(dd, length(dd)-1) || m.err.screen
dd = d0
do dx=1 while wordPos(dd, m.tso_ddAll) > 0
dd = d0 || dx
end
end
else if pos('?', dd) > 0 then
dd = repAll(dd, '?', m.err.screen)
if wordPos(dd, m.tso_ddAll) < 1 then
m.tso_ddAll = strip(m.tso_ddAll dd)
m.tso_dsn.dd = ''
m.tso_dsOrg.dd = ''
end
return dd
endProcedure tsoDD
tsoAlloc: procedure expose m.
parse arg na dd disp rest ':' nn, retRc
dd = translate(dd)
c = 'alloc dd('dd')' disp
if na == '-' then
m.tso_dsn.dd = ''
else if na \== 'INTRDR' then do
c = c "DSN('"na"')"
m.tso_dsn.dd = na
end
else do
c = c "sysout(*) writer(intRdr)"
m.tso_dsn.dd = '*intRdr'
end
if wordPos(disp, 'NEW MOD') > 0 & nn \== '' then
c = c dsnCreateAtts(,nn)
if adrTso(c rest, '*') = 0 then
return 0
if pos('IKJ56246I', m.tso_trap) > 0 then
if pos('TED, FILE IN USE', m.tso_trap) > 0 then do
/* IKJ56246I DATA SET A540769.WK.REXX NOT ALLOCATED, FILE IN USE */
say 'tsoAlloc dd' dd 'already in use:' substr(m.tso_trap, 3)
say '.... trying to free'
call tsoFree dd, 1
say '.... retrying to allocate' c rest
if adrTso(c rest, '*') = 0 then
return 0
end
if nn \= '' & wordPos(disp, 'OLD SHR') > 0 ,
& pos('IKJ56228I', m.tso_trap) > 0 ,
& pos(' NOT IN CATALOG ', m.tso_trap) > 0 then do
/* IKJ56228I DATA SET A540769.XY.REXX NOT IN CATALOG OR CATAL*/
say 'tsoAlloc creating' c rest ':'nn
call adrTso 'alloc dd('dd') new catalog' dsnCreateAtts(na, nn)
call adrTso 'free dd('dd')'
return tsoAlloc(na dd disp rest, retRc)
end
if pos('*', retRc) < 1 & wordPos(m.tso_rc, retRc) < 1 then
call err 'tsoAlloc rc='m.tso_rc 'tsoStmt='m.tso_stmt m.tso_trap
call sayNl 'tsoAlloc rc='m.tso_rc 'tsoStmt='m.tso_stmt m.tso_trap
return m.tso_rc
endProcedure tsoAlloc
dsnExists: procedure expose m.
parse upper arg aDsn
parse value csmSysDsn(aDsn) with sys '/' dsn
dsn = dsnSetMbr(dsn)
if sys == '*' then
return sysDsn("'"dsn"'") == 'OK'
lc = adrCsm('dslist system('sys') dsnMask('dsn') short', 4)
if stemsize = 0 | stemSize = 1 then
return stemSize
call err 'csmExists stemSize='stemsize 'for dsn='dsn n
endProcedure dsnExists
dsnLikeAtts: procedure expose m.
parse upper arg dsn, isFile
if isFile then do
ddDsn = m.tso_dsn.dsn
if lastPos('/', m.tso_dsn.dsn, 4) < 1 then
return tsoLikeAtts(dsn, 1)
dsn = m.tso_dsn.dsn
end
sx = lastPos('/', dsn, 4)
if sx < 1 then
return tsoLikeAtts(dsn, 0)
else if abbrev(dsn, '*/') | abbrev(dsn, sysVar('SYSNODE')'/') then
return tsoLikeAtts(substr(dsn, sx+1), 0)
else
return csmLikeAtts(dsn)
endProcedure dsnLikeAtts
tsoLikeAtts: procedure expose m.
parse arg dsn, isFile
rc = listDsi("'"dsn"'" copies('FILE', isFile) "SMSINFO")
if rc = 0 then
r = ''
else if rc = 4 & sysReason = 19 then do
r = 'UCOUNT(30)' /* 7.8.13 corrected attribute */
say 'creating' dsn 'with multi volume' mv
end
else if rc ^= 0 then
call err 'listDsi rc' rc 'reason' sysReason,
sysMsgLvl1 sysMsgLvl2
if right(sysDsSms, 7) == 'LIBRARY' | abbrev(sysDsSms, 'PDS') ,
| sysDsOrg = 'PO' then
r = 'dsOrg(PO) DSNTYPE(LIBRARY)' r
else
r = "dsOrg("sysDSorg")" r
if sysUnits = 'TRACK' then
sysUnits = 'TRACKS'
return r "MGMTCLAS("sysMgmtClass")",
"DATACLAS("sysDataClass")" ,
"RECFM("strip(translate('1 2 3', ' 'sysREcFM, '123'))")",
"LRECL("SYSLRECL")",
"SPACE("sysPrimary"," sysSeconds")" ,
sysUnits || left('S', sysUnits == 'TRACK')
/* "blksize("sysBLkSIZE")" removed 3.4.13: let sms do the magic */
endProcedure tsoLikeAtts
tsoFree: procedure expose m.
parse arg ddList, tryClose
do dx=1 to words(ddList)
dd = word(ddList, dx)
if adrTso('free dd('dd')', '*') <> 0 then do
if pos('IKJ56861I', m.tso_trap) > 0 & tryClose == 1 then
if pos('NOT FREED, DATA SET IS OPEN', m.tso_trap),
> 0 then do
/* IKJ56861I FILE A1 NOT FREED, DATA SET IS OPEN */
say 'dataset open:' substr(m.tso_trap, 3)
say '.... trying to close'
if adrTso('execio 0 diskR' dd '(finis)', '*') = 0 then
call adrTso 'free dd('dd')', '*'
end
if m.tso_rc \== 0 then
call sayNl 'rc='m.tso_rc 'tsoStmt='m.tso_stmt m.tso_trap
end
call tsoDD dd, '-', 1
end
return
endProcedure tsoFree
dsnCreateAtts: procedure expose m.
parse arg dsn, atts
res = ''
if dsn \== '' & \ abbrev(dsn, '-') then
res = "dataset('"dsnSetMbr(dsn)"')"
if abbrev(atts, ':') then do
parse var atts a1 atts
rl = substr(a1, 3)
if abbrev(a1, ':F') then do
if rl = '' then
rl = 80
res = res "recfm("space(f b)") lrecl("rl")"
end
else if abbrev(a1, ':V') then do
if rl = '' then
rl = 32756
res = res "recfm("space(v b)") lrecl("rl")"
end
else if abbrev(a1, ':L') then
res = res dsnLikeAtts(rl, 0)
else if abbrev(a1, ':D') then
res = res dsnLikeAtts(rl, 1)
else
call err 'csnCreateAtt bad :' a1
end
aU = ' 'translate(atts)
hasOrg = pos(' DSORG(', aU) > 0 | pos(' DSNTYPE(', aU) > 0
hasMbr = pos('(', dsn) > 0
if hasMbr & \ hasOrg then
atts = atts 'dsorg(po) dsntype(library)'
if hasOrg | hasMbr then do
ww = DSORG DSNTYPE
do wx=1 to words(ww)
do forever
cx = pos(' 'word(ww, wx)'(', ' 'translate(res))
if cx == 0 then
leave
cy = pos(')', res, cx)
res = delstr(res, cx, cy+1-cx)
end
end
end
res = res atts
aU = ' 'translate(res)
if pos(' MGMTCLAS(', aU) < 1 then
res = res 'mgmtclas(COM#A091)'
if pos(' SPACE(', aU) < 1 then
res = res 'space(1, 50) cylinders'
return res
endProcedure dsnCreateAtts
/*--- check if a dataset is archive ------------------------------------
returns 'ok' if dataset on disk
'not' if dataset is not catalogued
'arc' if dataset archived
listDsi errorMsg otherwise ------------------*/
dsnArc: procedure expose m.
parse upper arg dsn
lc = listDsi("'"strip(dsn)"' noRecall")
if lc = 0 then
return 'ok'
else if lc=4 & sysReason = 19 then /* multiple volumes */
return 'ok'
else if lc=16 & sysReason = 5 then
return 'notCat'
else if lc=16 & sysReason = 9 then
return 'arc'
else
return 'listDsi cc='lc', sysReason='sysReason ,
'm2='sysMsgLvl2', m1='sysMsgLvl1
endProcedure dsnArc
/*--- read the dataset specified in ggDsnSpec to stem ggSt -----------*/
readDSN:
parse arg ggDsnSpec, ggSt
ggAlloc = dsnAlloc(ggDsnSpec, 'SHR', 'readDsN')
call adrTso 'execio * diskr' word(ggAlloc, 1) '(stem' ggSt' finis)'
call tsoFree word(ggAlloc, 2)
return
endSubroutine readDsn
/*--- write the dataset specified in ggDsnSpec from stem ggSt
write ggCnt records if not empty otherwise ggst0
if ggSay 1 then say ... records written to ... -------------*/
writeDSN:
parse arg ggDsnSpec, ggSt, ggCnt, ggSay
if ggCnt == '' then
ggCnt = value(ggst'0')
ggAlloc = dsnAlloc(ggDsnSpec, 'OLD', 'readDsN')
call adrTso 'execio' ggCnt 'diskw' word(ggAlloc, 1) ,
'(stem' ggSt 'open finis)'
call tsoFree word(ggAlloc, 2)
if ggSay == 1 | m.debug == 1 then
say ggCnt 'records written to' ggDsnSpec
return
endSubroutine writeDsn
copyDSN: procedure expose m.
parse arg frSpec, toSpec, ggSay
parse value dsnAlloc(frSpec, 'SHR', 'FRDD') with frDD frFr
parse value dsnAlloc(toSpec, 'OLD', 'TODD') with toDD toFr
call tsoOpen frDD, 'R'
call tsoOpen toDD, 'W'
cnt = 0
do while readDD(frDD, r.)
call writeDD toDD, r.
cnt = cnt + r.0
end
call tsoClose frDD
call tsoClose toDD
call tsoFree frFr toFr
if ggSay == 1 | m.debug == 1 then
say cnt 'records copied from' frSpec 'to' to toSpec
return
endSubroutine writeDsn
/* copy adrTso end ****************************************************/
/* copy err begin *** errorhandling, messages, help ****************/
errIni: procedure expose m.
if m.err.ini == 1 then
return
m.err.ini = 1
m.err.handler = ''
m.err.cleanup = ';'
m.err.opt = ''
parse source m.err.os .
m.err.ispf = 0
m.err.screen = 0
if m.err.os \== 'LINUX' then do
address tso 'profile MsgId' /* brauchen wir in tsoAlloc| */
if sysVar('sysISPF') = 'ACTIVE' then do
m.err.ispf = 1
address ispExec 'vget zScreen shared'
m.err.screen = zScreen
end
end
return
endProcedure errIni
/* configure err -----------------------------------------------------*/
errReset: procedure expose m.
call errIni
parse arg m.err.opt, m.err.handler
if pos('I', translate(m.err.opt)) > 0 & m.err.ispf then
address ispExec 'control errors return'
return
endSubroutine errReset
/*--- error routine: abend with message ------------------------------*/
err:
parse arg ggTxt, ggOpt
call errIni
drop err handler cleanup opt call return stackHistory
if ggOpt == '' & m.err.handler \== '' then
interpret m.err.handler
call errSay 'f}'ggTxt
call errCleanup
if ggOpt == '' then
ggOpt = m.err.opt
upper ggOpt
if pos('T', ggOpt) > 0 then do
trace ?r
say 'trace ?r in err'
end
if pos('H', ggOpt) > 0 & m.err.eCat == 'f' then
x = show + stackHistory + by + bad + arithmetic + conversion
call errSay ' }errorhandler exiting with exit(12)'
exit errSetRc(12)
endSubroutine err
/*--- set rc for ispf: -------------------------------------------------
if a cmd is run by ispStart, its RC is ignored,
but ISPF passes the value of the shared variable zIspfRc
back as return code
----------------------------------------------------------------------*/
errSetRc: procedure expose m.
parse arg zIspfRc
if m.err.ispf then
address ispExec vput 'zIspfRc' shared
return zIspfRc
endProcedure errSetRc
/*--- error routine: user message cleanup exit -----------------------*/
errAddCleanup: procedure expose m.
parse arg code
call errIni
/* concatenate backwards, then it is executed also backwards */
m.err.cleanup = ';'code || m.err.cleanup
return
endProcedure errAddCleanup
errRmCleanup: procedure expose m.
parse arg code
call errIni
cx = pos(';'code';', m.err.cleanup)
if cx > 0 then
m.err.cleanup = left(m.err.cleanup, cx) ,
|| substr(m.err.cleanup, cx + length(code)+2)
return
endProcedure errRmCleanup
errCleanup: procedure expose m.
call errIni
errCleanup = m.err.cleanup
if errCleanup <> ';' then do
m.err.cleanup = ';'
say 'err cleanup begin' errCleanup
interpret errCleanup
say 'err cleanup end' errCleanup
end
if symbol('m.tso_ddAll') == 'VAR' then
call tsoFree m.tso_ddAll, 1
return
endProcedure errCleanup
/*--- say an errorMessage msg with pref and linesplits --------------*/
errSay: procedure expose m.
parse arg msg
return sayNl(errMsg(msg))
/*--- prefix an errormessage with pref,
split it into lines at \n to stem m.err -------------------*/
errMsg: procedure expose m.
parse arg msg
m.err.eCat = 'f'
do while substr(msg, 2, 1) == '}'
parse var msg m.err.eCat '}' msg
end
res = msg
if m.err.eCat <> '' then do
pTxt = ',error,fatal error,input error,s-}scanErr,warning,'
/* pTxt = ',error,fatal error,input error,syntax error,warning,' */
px = pos(','m.err.eCat, pTxt)
if px < 1 then do
m.err.eCat = 'f'
px = pos(','m.err.eCat, pTxt)
end
res = substr(pTxt, px+1, pos(',', pTxt, px+2)-px-1)
if substr(res, 3, 1) == '}' then
parse var res 2 opt 3 br 4 res
if opt == '-' then
res = res msg
else do
parse source . . s3 . /* current rexx */
res = res 'in' s3':' msg
end
end
return res
endProcedure errMsg
splitNL: procedure expose m.
parse arg st, msg
bx = 1
do lx=1 to 20
ex = pos('\n', msg, bx)
if ex < bx then
leave
m.st.lx = substr(msg, bx, ex-bx)
bx = ex+2
end
m.st.lx = substr(msg, bx)
m.st.0 = lx
return st
endProcedure splitNL
outNL: procedure expose m.
parse arg msg
bx = 1
do lx=1 to 20
ex = pos('\n', msg, bx)
if ex < bx then
leave
call out substr(msg, bx, ex-bx)
bx = ex+2
end
call out substr(msg, bx)
return
endProcedure outNL
/*--- say (part of) the lines of a stem ----------------------------*/
sayNl: procedure expose m.
parse arg msg
bx = 1
do lx=1 to 20
ex = pos('\n', msg, bx)
if ex < bx then
leave
say strip(substr(msg, bx, ex-bx), 't')
bx = ex+2
end
say strip(substr(msg, bx), 't')
return 0
endProcedure sayNl
/*--- say a trace message if m.trace is set --------------------------*/
debug: procedure expose m.
parse arg msg
if m.debug == 1 then
say 'debug:' msg
return
endProcedure debug
/*--- output a trace if m.trace is set -------------------------------*/
trc: procedure expose m.
parse arg msg
if m.trace == 1 then
call out 'trc:' msg
return
endProcedure trc
/*--- assert that the passed rexx expression evaluates to true -------*/
assert:
interpret 'if ('arg(1)') == 1 then return 1'
interpret 'call err' quote('assert failed' arg(1) ':' arg(2) '==>'),
arg(2)
endProcedure assert
/*--- abend with Message after displaying help -----------------------*/
errHelp: procedure expose m.
parse arg msg
call errSay 'i}'msg
call help 0
call err 'i}'msg
endProcedure errHelp
/*--- display the first comment block of the source as help ----------*/
help: procedure expose m.
parse arg doClear
if doClear \== 0 then
address tso 'clear'
parse source . . s3 .
say right(' help for rexx' s3, 72, '*')
do lx=1 while pos('/*', sourceLine(lx)) < 1
if lx > 10 then
return err('initial commentblock not found for help')
end
doInc = 1
ho = m.err.helpOpt
do lx=lx+1 to sourceline() while pos('*/', sourceline(lx)) = 0
li = strip(sourceLine(lx), 't')
cx = lastPos('{', li)
if cx > 0 then do
if length(ho) = 1 then
doInc = cx = length(li) | pos(ho, li, cx+1) > 0
li = left(li, cx-1)
end
if doInc then
say li
end
say right(' end help for rexx' s3, 72, '*')
return 4
endProcedure help
/* copy err end *****************************************************/