/* REXX EXTTST Demonstrates use of RXVSAM for dealing with VSAM files. Customize by specifying the loadlib holding RXVSAM and the appropriate EXEC library in LOCAL_PREINIT. Use '(routine name) ?' for HELP-text. Written by Frank Clarke 20020807 Impact Analysis . SYSEXEC LISTCSUM . SYSEXEC TRAPOUT . ISPLLIB RXVSAM Modification History 20030611 fxc enable CLEAR 20030922 fxc allow rkp<>0 20230514 fxc adjust HELP; 20230815 fxc enable NOHEX; 20240415 fxc DUMP_QUEUE quiet; 20250918 fxc SPACEOUT; new BACKEND; 20250925 fxc chg setting of sw. to sw.0; */ 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( "RXVSAMll" ) STACK" call A_INIT /* -*/ if \sw.0error_found then, call B_VSAM_OPS /* -*/ "LIBDEF ISPLLIB" if \sw.0nested then call DUMP_QUEUE 'quiet' /* -*/ 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( "EXEClib" ) " 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 ) say vsrec if sw.0ShowHex then do uplin = Translate( vsrec,uphex ) dnlin = Translate( vsrec,dnhex ) say colln rc say uplin say dnlin end /* Show hex */ return /*@ BP_PUT_REC */ /* . ----------------------------------------------------------------- */ LOCAL_PREINIT: /*@ customize opts */ address TSO RXVSAMll = "'SYS1.CBT.LINKLIB'" EXEClib = "'FCLARKE.FB80.SYSEXEC'" sw.0ShowHex = ^SWITCH( "NOHEX" ) return /*@ LOCAL_PREINIT */ /* subroutines below LOCAL_PREINIT are not selected by SHOWFLOW */ /* . ----------------------------------------------------------------- */ HELP: /*@ */ address TSO;"CLEAR" ; say if helpmsg <> "" then say helpmsg ex_nam = Left(exec_name,8) /* predictable size */ say " " say " "ex_nam" demonstrates a method of reading a VSAM KSDS in REXX. " say " " say " Syntax: "ex_nam" DSN vsamdsn (Required)" say " KEY vsamkey " say " GENERIC " say " CLEAR " say " (( NOHEX " say " " say " vsamdsn identifies the CLUSTER for which VSAM I/O is to be " say " done. " say " " say " vsamkey specifies the key (if any) to be used for the " say " initial read. If specified, only records with this " say " key will be read. If no key is specified, all " say " records will be read. " say " " say " GENERIC identifies vsamkey as a partial (generic) key. " say " " say " CLEAR requests a clear screen before writing output. " say " " say " NOHEX suppresses hex display of output " say " " "NEWSTACK"; pull ; "CLEAR" ; "DELSTACK" say " Debugging tools provided include: " say " " say " BRANCH: show all paragraph entries. " say " " say " TRACE tv: will use value following TRACE to place the execution in" say " 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" (( BRANCH TRACE ?R " if sysvar( "SYSISPF" ) = "ACTIVE" then, 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 ) /* 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 arg mode . "QSTACK" /* how many stacks? */ stk2dump = rc - tk_init_stacks /* remaining stacks */ if stk2dump = 0 & queued() = 0 then return if mode <> "QUIET" then, 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. */ if mode <> "QUIET" then, say "Processing Stack #" dd " Total Lines:" queued() do queued();parse 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( '5d40'x,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" )", info if wordpos( dlm,back ) = 0 then /* search for ending delimiter*/ helpmsg = helpmsg, "No matching second delimiter( "dlm" ) with KEYPHRS( "kp" )", info 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','5d'x ) /* 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 */ sw.0nested = sysvar( "SYSNEST" ) = "YES" sw.0batch = sysvar( "SYSENV" ) = "BACK" sw.0inispf = sysvar( "SYSISPF" ) = "ACTIVE" parse value KEYWD( "TRACE" ) "N" with tv . 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 . 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 */