/* REXX SAMPLE ...a PDS by looking at the first-n lines of each member. Written by Frank Clarke, HAS, Inc. Impact Analysis . SYSPROC TRAPOUT Modification History 20030214 fxc REXXSKEL v.20020513; 20030428 fxc upgrade HELPtext */ arg argline address TSO /* REXXSKEL ver.20020513 */ arg parms "((" opts signal on syntax signal on novalue call TOOLKIT_INIT /* conventional start-up -*/ rc = Trace("O"); rc = Trace(tv) info = parms /* to enable parsing */ call A_INIT /* -*/ "NEWSTACK" call B_GET_TEXT /* -*/ if \sw.0error_found then, call C_OUTPUT /* -*/ "DELSTACK" if \sw.nested then call DUMP_QUEUE /* -*/ exit /*@ SAMPLE */ /* . ----------------------------------------------------------------- */ A_INIT: /*@ */ if branch then call BRANCH address TSO if parms = '' then call HELP call AK_KEYWDS /* -*/ parse var parms dsn parms /* which dataset ? */ if Substr(dsn,1,1) = "'" then, parse var dsn "'" dsn "'" /* unquoted, fully-qualified */ else, dsn = Userid()"."dsn if sw.0Prealloc then return outdsn = "$$TEMP$$" alloc.0 = "NEW CATALOG UNIT(SYSDA) SPACE(8 8) TRACKS", "RECFM(V B) LRECL(255) BLKSIZE(0)" alloc.1 = "SHR" /* if it already exists... */ tempstat = Sysdsn(outdsn) = "OK" |, /* 1=exists, 0=missing */ Sysdsn(outdsn) = "MEMBER NOT FOUND" "ALLOC FI(LIST) DA("outdsn") REU" alloc.tempstat return /*@ A_INIT */ /* . ----------------------------------------------------------------- */ AK_KEYWDS: /*@ */ if branch then call BRANCH address TSO sw.0Prealloc = SWITCH("NOALLOC") memmask = KEYWD("MEMBERSLIKE") lomem = KEYWD("MEMBERSFROM") himem = KEYWD("MEMBERSTO") parse value KEYWD("LINES") 5 with lc . return /*@ AK_KEYWDS */ /* . ----------------------------------------------------------------- */ B_GET_TEXT: /*@ */ if branch then call BRANCH address TSO "NEWSTACK" "MEMBERS '"dsn"' ((STACK LINE" /* get a member-list */ pull mbrlist "DELSTACK" if mbrlist = "(EMPTY)" then do sw.0error_found = 1 return end call BA_TRIM_MBRLIST /* snip unwanted members -*/ do ii = 1 to Words(mbrlist) mbr = Word(mbrlist,ii) "ALLOC FI(IN) DA('"dsn"("mbr")') SHR REU" queue "MBR="mbr "EXECIO" lc "DISKR IN (FINIS" queue " ------------------------------------------------" end return /*@ B_GET_TEXT */ /* . ----------------------------------------------------------------- */ BA_TRIM_MBRLIST: /*@ */ if branch then call BRANCH address TSO if lomem <> "" then do pt = Pos(" "lomem,mbrlist) if pt > 0 then do mbrlist = Delstr(mbrlist,1,pt) lomem = "" /* bypass further processing */ end end if himem <> "" then do pt = Pos(" "himem,mbrlist) if pt > 0 then do mbrlist = Substr(mbrlist,1,pt) himem = "" /* bypass further processing */ end end if lomem <> "" then do finished = "0" /* not finished */ hipt = Words(mbrlist) lopt = 1 midpt = (hipt + lopt) % 2 do until finished /* */ if lomem < Word(mbrlist,midpt) then, parse value midpt lopt (midpt+lopt)%2 with , hipt lopt midpt . ; else, if lomem > Word(mbrlist,midpt) then, parse value hipt midpt (midpt+hipt)%2 with , hipt lopt midpt . ; else, finished = "1" /* equals midpt */ if midpt = lopt then finished = "1" /* not found */ end /* finished */ mbrlist = Delword(mbrlist,1,midpt-1) end if lomem <> "" then do do Words(mbrlist) /* each membername */ parse var mbrlist mbr mbrlist if mbr < lomem then iterate /* discard */ mbrlist = mbr mbrlist /* restore */ leave /* all done */ end /* words */ end if himem <> "" then do finished = "0" /* not finished */ hipt = Words(mbrlist) lopt = 1 midpt = (hipt + lopt) % 2 do until finished /* */ if himem < Word(mbrlist,midpt) then, parse value midpt lopt (midpt+lopt)%2 with , hipt lopt midpt . ; else, if himem > Word(mbrlist,midpt) then, parse value hipt midpt (midpt+hipt)%2 with , hipt lopt midpt . ; else, finished = "1" /* equals midpt */ if midpt = lopt then finished = "1" /* not found */ end /* finished */ mbrlist = Delword(mbrlist,midpt+1) end if himem <> "" then do do bx = Words(mbrlist) to 1 by -1 if Word(mbrlist,bx) > himem then, mbrlist = DelWord(mbrlist,bx,1) else leave end /* bx */ end if memmask <> "" then do memmask = Strip(memmask,"T","*")"*" maskl = Length(memmask) lomask = Translate(memmask, '00'x , "*") himask = Translate(memmask, 'FF'x , "*") do Words(mbrlist) /* each membername */ parse var mbrlist mbr mbrlist if BitAnd(himask,Left(mbr,maskl)) = , BitOr(lomask,Left(mbr,maskl)) then, mbrlist = mbrlist mbr end /* words */ end return /*@ BA_TRIM_MBRLIST */ /* . ----------------------------------------------------------------- */ C_OUTPUT: /*@ */ if branch then call BRANCH address TSO "EXECIO" queued() "DISKW LIST (FINIS" "FREE FI(IN)" if sw.inISPF then do address ISPEXEC "LMINIT DATAID(DDNID) DDNAME(LIST)" "VIEW DATAID("ddnid")" end return /*@ C_OUTPUT */ /* . ----------------------------------------------------------------- */ LOCAL_PREINIT: /*@ customize opts */ address TSO return /*@ LOCAL_PREINIT */ /* subroutines below LOCAL_PREINIT are not selected by SHOWFLOW */ /* . ----------------------------------------------------------------- */ HELP: /*@ */ address TSO;"CLEAR" if helpmsg <> "" then do ; say helpmsg; say ""; end ex_nam = Left(exec_name,8) /* predictable size */ say " " say " "ex_nam" extracts the first-n lines from each member of " say " a designated PDS. " say " " say " Syntax: "ex_nam" " say " " say " " say " " say " " say " " say " " say " specifies the number of lines to extract " say " from each member " say " " say " is a wild-carded member name using '*' to specify " say " the positions which may be any character. " say " " "NEWSTACK"; pull ; "CLEAR" ; "DELSTACK" say " specifies either the earliest named member to be " say " selected (MEMBERFROM) or the earliest named member " say " which will cause selection to halt (MEMBERTO). " say " Absent MEMBERFROM, selection begins with the first " say " member; absent MEMBERTO, selection continues to the " say " last member. Both may be specified. " say " " say " causes the output to be written to DD LIST which " say " must be pre-allocated. " say " " "NEWSTACK"; pull ; "CLEAR" ; "DELSTACK" say " Debugging tools provided include: " say " " say " MONITOR: displays key information throughout processing. " say " " say " NOUPDT: by-pass all update logic. " say " " say " BRANCH: show all paragraph entries. " say " " say " TRACE tv: will use value following TRACE to place the " say " execution in REXX TRACE Mode. " say " " say " " say " Debugging tools can be accessed in the following manner: " say " " say " TSO "ex_nam" parameters (( debug-options " say " " say " For example: " say " " say " TSO "ex_nam" (( MONITOR TRACE ?R " address ISPEXEC "CONTROL DISPLAY REFRESH" exit /*@ HELP */ /* . ----------------------------------------------------------------- */ BRANCH: Procedure expose, /*@ */ sigl exec_name rc = trace("O") /* we do not want to see this */ arg brparm . origin = sigl /* where was I called from ? */ do currln = origin to 1 by -1 /* inch backward to label */ if Right(Word(Sourceline(currln),1),1) = ":" then do parse value sourceline(currln) with pgfname ":" . /* Label */ leave ; end /* name */ end /* currln */ select when brparm = "NAME" then return(pgfname) /* Return full name */ when brparm = "ID" then do /* wants the prefix */ parse var pgfname pgfpref "_" . /* get the prefix */ return(pgfpref) end /* brparm = "ID" */ otherwise say left(sigl,6) left(pgfname,40) exec_name "Time:" time("L") end /* select */ return /*@ BRANCH */ /* . ----------------------------------------------------------------- */ DUMP_QUEUE: /*@ Take whatever is in stack */ rc = trace("O") /* and write to the screen */ address TSO "QSTACK" /* how many stacks? */ stk2dump = rc - tk_init_stacks /* remaining stacks */ if stk2dump = 0 & queued() = 0 then return say "Total Stacks" rc , /* rc = #of stacks */ " Begin Stacks" tk_init_stacks , /* Stacks present at start */ " Excess Stacks to dump" stk2dump do dd = rc to tk_init_stacks by -1 /* empty each one. */ say "Processing Stack #" dd " Total Lines:" queued() do queued();pull line;say line;end /* pump to the screen */ "DELSTACK" /* remove stack */ end /* dd = 1 to rc */ return /*@ DUMP_QUEUE */ /* Handle CLIST-form keywords added 20020513 . ----------------------------------------------------------------- */ CLKWD: Procedure expose info /*@ hide all except info */ arg kw kw = kw"(" /* form is 'KEY(DATA)' */ kw_pos = Pos(kw,info) /* find where it is, maybe */ if kw_pos = 0 then return "" /* send back a null, not found*/ rtpt = Pos(") ",info" ",kw_pos) /* locate end-paren */ slug = Substr(info,kw_pos,rtpt-kw_pos+1) /* isolate */ info = Delstr(info,kw_pos,rtpt-kw_pos+1) /* excise */ parse var slug (kw) slug /* drop kw */ slug = Reverse(Substr(Reverse(Strip(slug)),2)) return slug /*@CLKWD */ /* Handle multi-word keys 20020513 . ----------------------------------------------------------------- */ KEYWD: Procedure expose info /*@ hide all vars, except info*/ arg kw kw_pos = wordpos(kw,info) /* find where it is, maybe */ if kw_pos = 0 then return "" /* send back a null, not found*/ kw_val = word(info,kw_pos+Words(kw))/* get the next word */ info = Delword(info,kw_pos,2) /* remove both */ return kw_val /*@ KEYWD */ /* . ----------------------------------------------------------------- */ KEYPHRS: Procedure expose, /*@ */ info helpmsg exec_name /* except these three */ arg kp wp = wordpos(kp,info) /* where is it? */ if wp = 0 then return "" /* not found */ front = subword(info,1,wp-1) /* everything before kp */ back = subword(info,wp+1) /* everything after kp */ parse var back dlm back /* 1st token must be 2 bytes */ if length(dlm) <> 2 then /* Must be two bytes */ helpmsg = helpmsg "Invalid length for delimiter("dlm") with KEYPHRS("kp")" if wordpos(dlm,back) = 0 then /* search for ending delimiter*/ helpmsg = helpmsg "No matching second delimiter("dlm") with KEYPHRS("kp")" if helpmsg <> "" then call HELP /* Something is wrong */ parse var back kpval (dlm) back /* get everything b/w delim */ info = front back /* restore remainder */ return Strip(kpval) /*@ KEYPHRS */ /* . ----------------------------------------------------------------- */ NOVALUE: /*@ */ say exec_name "raised NOVALUE at line" sigl say " " say "The referenced variable is" condition("D") say " " zsigl = sigl signal SHOW_SOURCE /*@ NOVALUE */ /* . ----------------------------------------------------------------- */ SHOW_SOURCE: /*@ */ call DUMP_QUEUE /* Spill contents of stacks -*/ if sourceline() <> "0" then /* to screen */ say sourceline(zsigl) rc = trace("?R") nop exit /*@ SHOW_SOURCE */ /* . ----------------------------------------------------------------- */ SS: Procedure /*@ Show Source */ arg ssbeg ssend . if ssend = "" then ssend = 10 if \datatype(ssbeg,"W") | \datatype(ssend,"W") then return ssend = ssbeg + ssend do ssii = ssbeg to ssend ; say Strip(sourceline(ssii),'T') ; end return /*@ SS */ /* . ----------------------------------------------------------------- */ SWITCH: Procedure expose info /*@ */ arg kw sw_val = Wordpos(kw,info) > 0 /* exists = 1; not found = 0 */ if sw_val then /* exists */ info = Delword(info,Wordpos(kw,info),1) /* remove it */ return sw_val /*@ SWITCH */ /* . ----------------------------------------------------------------- */ SYNTAX: /*@ */ errormsg = exec_name "encountered REXX error" rc "in line" sigl":", errortext(rc) say errormsg zsigl = sigl signal SHOW_SOURCE /*@ SYNTAX */ /* Can call TRAPOUT. . ----------------------------------------------------------------- */ TOOLKIT_INIT: /*@ */ address TSO info = Strip(opts,"T",")") /* clip trailing paren */ parse source sys_id how_invokt exec_name DD_nm DS_nm, as_invokt cmd_env addr_spc usr_tokn parse value "" with tv helpmsg . parse value 0 "ISR00000 YES" "Error-Press PF1" with, sw. zerrhm zerralrm zerrsm if SWITCH("TRAPOUT") then do "TRAPOUT" exec_name parms "(( TRACE R" info exit end /* trapout */ if Word(parms,1) = "?" then call HELP /* I won't be back */ "QSTACK" ; tk_init_stacks = rc /* How many stacks? */ parse value SWITCH("BRANCH") SWITCH("MONITOR") SWITCH("NOUPDT") with, branch monitor noupdt . parse value mvsvar("SYSNAME") sysvar("SYSNODE") with, #tk_cpu node . sw.nested = sysvar("SYSNEST") = "YES" sw.batch = sysvar("SYSENV") = "BACK" sw.inispf = sysvar("SYSISPF") = "ACTIVE" parse value KEYWD("TRACE") "O" with tv . tk_globalvars = "exec_name tv helpmsg sw. zerrhm zerralrm ", "zerrsm zerrlm tk_init_stacks branch monitor ", "noupdt" call LOCAL_PREINIT /* for more opts -*/ return /*@ TOOLKIT_INIT */