/* REXX ALIASGEN generate DELETE ALIAS and DEFINE ALIAS statements from a pre-set list of names. Use '(routine name) ?' for HELP-text. Written by Frank Clarke rexxhead@yahoo.com 19921124 Impact Analysis . SYSEXEC TRAPOUT Modification History 20010329 fxc conform to REXXSKEL v.19991109; DECOMM; 20211026 fxc allow for comments in DEFN 20230726 fxc adjust HELP; 20230806 fxc chg SYSPROC to SYSEXEC in Impact Analysis; 20240414 fxc DUMP_QUEUE quiet; 20250810 fxc adjust HELP; 20250916 fxc new BACKEND; new Spaceout; 20250925 fxc chg setting of sw. to sw.0; */ arg argline address TSO /* REXXSKEL ver.19991109 */ 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 /* -*/ call B_GEN_ALIASES /* -*/ if \sw.0nested then call DUMP_QUEUE 'quiet' /* -*/ exit /*@ ALIASGEN */ /* . ----------------------------------------------------------------- */ A_INIT: /*@ */ if branch then call BRANCH address TSO def. = ""; del.="" /* prepare arrays */ parse var info dsn . if dsn = "?" then call HELP if dsn = "" then dsn = defn_dsn source = dsn"(ALIASES)" define = dsn"(DEFALIAS)" delete = dsn"(DELALIAS)" return /*@ A_INIT */ /* (1) Read the list of aliases and create (1a) new definitions and (1b) DELETE statements for the aliases which are about to be defined. (2) If a 'delete' member currently exists, run it. (3) Create/replace the delete-member with the latest DELETE statements. (4) Build the new aliases. . ----------------------------------------------------------------- */ B_GEN_ALIASES: /*@ */ if branch then call BRANCH address TSO /* Read the list */ "ALLOC FI( DEFN ) DA( '"source"' ) SHR REU" if rc <> 0 then do /* ALLOC failed */ "CLEAR" say "Allocation of definition file failed, RC="rc exit end /* (1) Read the list of aliases */ "EXECIO * DISKR DEFN (FINIS STEM DEF." zz = 0 do bx = 1 to def.0 /* for every definition */ if Left( def.bx,1 ) = "*" then iterate zz = zz + 1 parse var def.bx alias base . /* get aliasname and basename */ del.zz = " DELETE ("alias") ALIAS" /* Create DELETE statement */ queue " DEFINE ALIAS ( NAME ("alias") +" queue " RELATE ("base") )" /* Create DEFINE */ end del.0 = zz "ALLOC FI( DEFN ) DA( '"define"' ) SHR REU" "EXECIO" queued() "DISKW DEFN (FINIS" /* load new DEFINEs */ "ALLOC FI( SYSPRINT ) DA( * ) SHR REU" "ALLOC FI( SYSIN ) DA( '"delete"' ) SHR REU" /* (2) If a 'delete' member currently exists, run it. */ if Sysdsn( "'"delete"'" ) = "OK" then, address LINKMVS "IDCAMS" /* delete existing ALIASes */ /* (3) Create/replace the delete-member */ "EXECIO" del.0 "DISKW SYSIN (FINIS STEM DEL." /* reload DELETEs */ /* (4) Build the new aliases. */ "ALLOC FI( SYSIN ) DA( '"define"' ) SHR REU" address LINKMVS "IDCAMS" /* define new ALIASes */ "FREE FI( SYSIN DEFN )" /* clean up */ "ALLOC FI( SYSIN ) DA( * ) REU" return /*@ B_GEN_ALIASES */ /* . ----------------------------------------------------------------- */ LOCAL_PREINIT: /*@ customize opts */ address TSO defn_dsn = "FCLARKE.FB80.ISPSLIB" /* default source */ return /*@ LOCAL_PREINIT */ /* subroutines below LOCAL_PREINIT are not selected by SHOWFLOW */ /* . ----------------------------------------------------------------- */ HELP: /*@ */ address TSO;"CLEAR" if helpmsg <> "" then say helpmsg; say "" ex_nam = Left( exec_name,8 ) /* predictable size */ say " "ex_nam" helps you build and maintain dataset aliases. " say " " say " Syntax: "ex_nam" POsrc " say " " say " POsrc is a TSO-format FB-80-PO dataset containing several " say " specific members, among which are: " say " " say " ALIASES -- contains the alias-base pairs to be " say " defined. These must be fully-qualified and " say " quoted DSNs, alias followed by base. Any " say " line that begins with an asterisk is " say " ignored. " say " " say " DELALIAS -- contains IDCAMS DELETE commands written " say " by the last execution of "exec_name". These" say " will be used to clear away the existing " say " aliases prior to redefining a new set. " say " " say " It is not an error for DELALIAS to be missing, but the result " say " of execution is undefined if there are existing aliases. " "NEWSTACK"; pull ; "CLEAR" ; "DELSTACK" say " Debugging tools provided include: " 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 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" (( trace ?r branch " 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 */