/* REXX EXTTST Demonstrates use of RXVSAM for dealing with VSAM files. Written by Frank Clarke 20020807 Impact Analysis . SYSEXEC LISTCSUM . SYSEXEC TRAPOUT . ISPLLIB RXVSAM Modification History 20030611 fxc enable CLEAR 20030922 fxc allow rkp<>0 20040426 fxc correct LIBDEF to ISPLLIB */ arg argline address ISPEXEC /* 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 */ "LIBDEF ISPLLIB DATASET ID('NTIN.TS.D822.LIB.ISPLLIB') STACK" call A_INIT /* -*/ if \sw.0error_found then, call B_VSAM_OPS /* -*/ "LIBDEF ISPLLIB" if \sw.nested then call DUMP_QUEUE /* -*/ exit /*@ EXTTST */ /* . ----------------------------------------------------------------- */ A_INIT: /*@ */ if branch then call BRANCH address TSO parse value "0 0 0 0 0 0 0" with, ct. . call AK_KEYWDS /* -*/ if vsamdsn = "" then do helpmsg = "DSN is required." call HELP /* -*/ end kl = Length(key) call AL_LISTCSUM /* -*/ colmk = "----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0" uphex = Copies("0",16)Copies("1",16)Copies("2",16)Copies("3",16), || Copies("4",16)Copies("5",16)Copies("6",16)Copies("7",16), || Copies("8",16)Copies("9",16)Copies("A",16)Copies("B",16), || Copies("C",16)Copies("D",16)Copies("E",16)Copies("F",16) dnhex = Copies("0123456789ABCDEF",16) return /*@ A_INIT */ /* . ----------------------------------------------------------------- */ AK_KEYWDS: /*@ */ if branch then call BRANCH address TSO if SWITCH("CLEAR") then "CLEAR" sw.0Generic = SWITCH("GENERIC") parse value KEYWD("KEY") "*" with , key . vsamdsn = KEYWD("DSN") parse value KEYWD("LIMIT") "*" with , limit . sw.0NoKey = key = "*" return /*@ AK_KEYWDS */ /* . ----------------------------------------------------------------- */ AL_LISTCSUM: /*@ */ if branch then call BRANCH address TSO rkp = "?" "ALTLIB ACT APPLICATION(EXEC) DA('DTAFXC.@@.EXEC') " if rc > 4 then do say "ALTLIB failed, RC="rc sw.0error_found = 1 return end "NEWSTACK" "LISTCSUM" vsamdsn "STACK" do queued() pull line parse var line tag ":" value if tag = "DATAATTRIBUTES" then do info = value rkp = KEYWD("RKP") /* relative key position */ end end /* queued */ "DELSTACK" "ALTLIB DEACT APPLICATION(EXEC)" if rkp = "?" |, rkp = " " then do /* oops.... */ say "No RKP returned by LISTCSUM" sw.0error_found = 1 end return /*@ AL_LISTCSUM */ /* . ----------------------------------------------------------------- */ B_VSAM_OPS: /*@ */ if branch then call BRANCH address TSO "ALLOC FI(VSDS) DA("vsamdsn") SHR REU" say "Using" vsamdsn ; say "" rc = RXVSAM('OPENINPUT','VSDS','KSDS') say "OPEN" rc if sw.0Generic then do rc = RXVSAM('READGENERIC','VSDS',key,'VSREC') call BP_PUT_REC /* -*/ end else, /* */ if sw.0NoKey then do rc = RXVSAM('READNEXT','VSDS',,'VSREC') call BP_PUT_REC /* -*/ end else do rc = RXVSAM('READ','VSDS',key,'VSREC') call BP_PUT_REC /* -*/ end do forever if limit <> "*" then, if limit <= ct.read then leave rc = RXVSAM('READNEXT','VSDS',,'VSREC') if rc > 0 then leave if \sw.0NoKey then, If Substr(VSREC,rkp+1,kl) <> key then leave call BP_PUT_REC /* -*/ end /* forever */ say "READ" rc rc = RXVSAM('CLOSE','VSDS') "FREE FI(VSDS)" return /*@ B_VSAM_OPS */ /* . ----------------------------------------------------------------- */ BP_PUT_REC: /*@ */ if branch then call BRANCH address TSO ct.read = ct.read + 1 recl = Length(vsrec) iter = (recl%100) + 1 colln = Left( Copies(colmk,iter) , recl ) uplin = Translate(vsrec,uphex) dnlin = Translate(vsrec,dnhex) say vsrec say colln rc say uplin say dnlin return /*@ BP_PUT_REC */ /* . ----------------------------------------------------------------- */ LOCAL_PREINIT: /*@ customize opts */ address TSO return /*@ LOCAL_PREINIT */ /* subroutines below LOCAL_PREINIT are not selected by SHOWFLOW */ /* . ----------------------------------------------------------------- */ HELP: /*@ */ address TSO;"CLEAR" ; say if helpmsg <> "" then do ; say helpmsg; say ""; end ex_nam = Left(exec_name,8) /* predictable size */ say " "ex_nam" demonstrates a method of reading a VSAM KSDS in REXX. " say " " say " Syntax: "ex_nam" (Required)" say " " say " " say " " say " " say " vsamdsn identifies the CLUSTER for which VSAM I/O is to " say " be done. " say " " say " vsamkey specifies the key (if any) to be used for the " say " initial read. If specified, only records " say " with this key will be read. If no key is " say " specified, all records will be read. " say " " say " GENERIC identifies as a partial (generic) key. " say " " say " CLEAR requests a clear screen before writing output. " 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 */