/* REXX ALIASGEN generate DELETE ALIAS and DEFINE ALIAS statements from a pre-set list of names. Written by Frank Clarke 19921124 Impact Analysis . SYSPROC LISTCSUM . SYSPROC TRAPOUT Modification History 20010329 fxc conform to REXXSKEL v.19991109; DECOMM; 20020718 fxc use LISTCSUM to locate base for an ALIAS */ arg argline address TSO /* REXXSKEL ver.19991109 */ arg parms "((" opts signal on syntax signal on novalue call TOOLKIT_INIT /* conventional start-up -*/ rc = trace(tv) info = parms /* to enable parsing */ call A_INIT /* -*/ call B_GEN_ALIASES /* -*/ if \sw.nested then call DUMP_QUEUE /* -*/ exit /*@ ALIASGEN */ /* . ----------------------------------------------------------------- */ A_INIT: /*@ */ if branch then call BRANCH address TSO def. = ""; del.=0 /* prepare arrays */ parse var info dsn . if dsn = "?" then call HELP if dsn = "" then dsn = defn_dsn "NEWSTACK" "LISTCSUM" dsn "STACK" do queued() pull line parse var line tag ":" value if tag = "ALIASASSOCIATIONS" then do info = value dsn = KEYWD("NONVSAM") /* get the base dsn */ end end /* queued */ "DELSTACK" 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: /*@ */ b_tv = trace() /* what setting at entry ? */ 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 Produce DELETE cmds for the ALIASes about to be defined. Produce new DEFINE ALIAS cmds. */ "EXECIO * DISKR DEFN (FINIS STEM DEF." do bx = 1 to def.0 /* for every definition */ if Left(def.bx,1) = "*" then iterate parse var def.bx alias base . /* get aliasname and basename */ parse value del.0+1 " DELETE ("alias") ALIAS" with, $z del.$z 1 del.0 . /* Gen DELETE commands */ queue " DEFINE ALIAS ( NAME ("alias") +" queue " RELATE ("base") )" /* Create DEFINE */ end "ALLOC FI(DEFN) DA('"define"') SHR REU" if noupdt then do rc = Trace("O") "CLEAR" say "The following IDCAMS DEFINE ALIAS commands were created:" do queued() parse pull line ; say line end /* queued */ say say "The following IDCAMS DELETE ALIAS commands were created:" do bx = 1 to del.0 say del.bx end /* bx */ rc = trace(b_tv) end /* noupdt */ else do "EXECIO" queued() "DISKW DEFN (FINIS" /* load new DEFINEs */ end /* */ "ALLOC FI(SYSPRINT) DA(*) SHR REU" /* (2) If a 'delete' member currently exists, run it. */ "ALLOC FI(SYSIN) DA('"delete"') SHR REU" if \noupdt then, if Sysdsn("'"delete"'") = "OK" then, address LINKMVS "IDCAMS" /* delete existing ALIASes */ /* (3) Create/replace the delete-member */ if noupdt then do end /* noupdt */ else do "EXECIO" del.0 "DISKW SYSIN (FINIS STEM DEL." /* reload DELETEs */ end /* */ /* (4) Build the new aliases. */ "ALLOC FI(SYSIN) DA('"define"') SHR REU" if \noupdt then, 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 = Userid()".TEST.CNTL" /* default source */ 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 " "ex_nam" helps you build and maintain dataset aliases. " say " " say " Syntax: "ex_nam" " say " " say " POsrc is the fully-qualified unquoted name of a FB80PO " say " dataset containing several specific members, among " say " which are: " say " " say " ALIASES -- contains the alias-base pairs to be " say " defined. " 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. " say " " "NEWSTACK"; pull ; "CLEAR" ; "DELSTACK" say " " say " The contents of member 'ALIASES' should be in this form: " say " " say " Col.1 an asterisk (*) denotes a comment-line " say " Col.2-n two strings, the first of which is the ALIAS to be " say " assigned (quoted, fully-qualified) and the second, " say " the base dataset name (quoted, fully-qualified). " 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 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" (( 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 */ "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 */ /* . ----------------------------------------------------------------- */ 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+1) /* 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 sourceline(ssii) ; 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 = "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 */