%ZISH ;IHS\PR,SFISC/AC - Host File Control for OpenM/Cache for NT/VMS ;12/13/2005
 ;;8.0;KERNEL;**34,65,84,104,191,306,385**;JUL 10, 1995;Build 3
 ;
 ; **MODIFIED VERSION FOR CACHE/VMS -- 9/7/01**
 ;
OPEN(X1,X2,X3,X4,X5,X6)    ;SR. Open Host File
 ;X1=handle name
 ;X2=directory name \dir\
 ;X3=file name
 ;X4=file access mode e.g.: W for write, R for read, A for append.
 ;X5=Max record size for a new file, X6=Subtype
 N %,%1,%2,%I,%ZOS,%T,%ZA,%ZISHIO,$ET
 S $ET="D OPNERR^%ZISH"
 S U="^",%I=$I,%T=0,POP=0,X2=$$DEFDIR($G(X2)),%ZOS=$$OS^%ZOSV M %ZISHIO=IO
 I %ZOS'="VMS" S %1=$S(X4["A":"AW",X4["W":"WN",1:"R")_$S(X4["B":"U",1:"S") ;NT & Unix
 I %ZOS="VMS" S %1=$S(X4["A":"AW",X4["W":"WN",1:"RH")_$S(X4["B":"U",1:"S")
 ;The next line eliminates the <ENDOFFILE> error for sequential files for the current process.
 S %ZA=$ZUTIL(68,40,1) ;Work like DSM
 S %=X2_X3 O %:(%1):2 I '$T S POP=1 Q
 ;U % S %ZA=$ZA ;Comment out, $ZA is for READ status
 ;I %ZA=-1 U:%I]"" %I C % S POP=1 Q
 S IO=%,IO(1,IO)="",IOT="HFS",IOM=80,IOSL=60,POP=0 D SUBTYPE^%ZIS3($G(X6,"P-OTHER"))
 I $G(X1)]"" D SAVDEV^%ZISUTL(X1)
 U $S(%I]"":%I,1:$P)
 Q
 ;
OPNERR ;Handle open error
 S POP=1,$ECODE=""
 U:$P]"" $P
 Q
 ;
CLOSE(X) ;SR. Close HFS device not opened by %ZIS.
 ;X=HANDLE NAME
 ;IO=Device
 N %
 I $G(IO)]"" C IO K IO(1,IO)
 I $G(X)]"" D RMDEV^%ZISUTL(X)
 ;Only reset home if one setup.
 I $D(IO("HOME"))!$D(^XUTL("XQ",$J,"IOS")) D HOME^%ZIS
 Q
 ;
OPENERR ;
 Q 0
 ;
DEL(%ZX1,%ZX2) ;ef,SR. Del fl(s)
 ;S Y=$$DEL^%ZISH("dir path",$NA(array))
 N %,%ZX,%ZXDEL,%ZISH,%ZOS
 S %ZX1=$$DEFDIR($G(%ZX1)),%ZOS=$$OS^%ZOSV,%ZXDEL=1,%ZISH=""
 F  S %ZISH=$O(@%ZX2@(%ZISH)) Q:%ZISH=""  D
 . N $ETRAP,$ESTACK S $ETRAP="D DELERR^%ZISH"
 . I %ZISH["*" S %ZXDEL=0 Q  ; Wild card not allowed.
 . S %ZX=$S(%ZISH[%ZX1:%ZISH,1:%ZX1_%ZISH)
 . I %ZOS="VMS",%ZX'[";" S %ZX=%ZX_";*"
 . Q:$ZSEARCH(%ZX)']""  ; File doesn't exist
 . S %=$ZF(-1,$S(%ZOS="UNIX":"rm ",1:"del ")_%ZX)
 . I $ZSEARCH(%ZX)]"" S %ZXDEL=0 ; Delete was not successful.
 Q %ZXDEL
 ;
DELERR ;Trap any $ETRAP error, unwind and return.
 S $ETRAP="D UNWIND^%ZTER"
 S %ZXDEL=0
 D UNWIND^%ZTER
 Q
 ;
LIST(%ZX1,%ZX2,%ZX3) ;ef,SR. Create a local array holding file names
 ;S Y=$$LIST^ZOSHDOS("\dir\",$NA(array),$NA(return array)) Return 1 if found anything
 ;
 N %ZISH,%ZISHN,%ZX,%ZISHY,%ZY,%ZOS
 S %ZX1=$$DEFDIR($G(%ZX1)),%ZOS=$$OS^%ZOSV
 ;S %ZX1=$$TRNLNM(%ZX1)
 ;Get fls to act on
 S %ZISH="" F  S %ZISH=$O(@%ZX2@(%ZISH)) Q:%ZISH=""  D
 . S %ZISHY=$P(%ZISH,"*")
 . I %ZOS="VMS",%ZISH'["." S %ZISH=%ZISH_".*" ;Allways upper
 . ;NT, display case, ignore for lookup
 . S %ZX=%ZX1_%ZISH
 . F %ZISHN=0:1 D  Q:(%ZX="") 
 . . S %ZX=$ZSEARCH($S(%ZISHN:"",1:%ZX))
 . . ;Q:(%ZX="")!($$UP^XLFSTR(%ZX)'[%ZISHY)!(%ZX?.E1.2".")
 . . Q:(%ZX="")!(%ZX?.E1.2".")
 . . I %ZOS="VMS" S %ZX=$P(%ZX,"]",2),@%ZX3@(%ZX)=""
 . . I %ZOS="NT" S %ZY=$P(%ZX,"\",$L(%ZX,"\")),@%ZX3@(%ZY)=""
 . . I %ZOS="UNIX" S %ZY=$P(%ZX,"/",$L(%ZX,"/")) Q:%ZX'[%ZISHY  S @%ZX3@(%ZY)=""
 . . Q
 Q $O(@%ZX3@(""))]""
 ;
MV(X1,X2,Y1,Y2) ;ef,SR. Rename a fl
 ;S Y=$$MV^ZOSHDOS("\dir\","fl","\dir\","fl")
 ;Unix use mv, NT/VMS use COPY and DEL
 N %,X,Y,%ZOS,%ZISHX S %ZOS=$$OS^%ZOSV
 S X1=$$DEFDIR($G(X1)),Y1=$$DEFDIR($G(Y1))
 S X=$ZSEARCH(X1_X2),Y=Y1_Y2 ;move X to Y
 I X="" Q 0
 S %=$ZF(-1,$S(%ZOS="UNIX":"mv ",1:"copy ")_X_" "_Y) ;Use NT/VMS copy
 I %ZOS'="UNIX" D
 . S X2=$P(X,X1,2),%ZISHX(X2)=""
 . S Y=$$DEL^%ZISH(X1,$NA(%ZISHX))
 Q 1
 ;
PWD() ;ef,SR. Print working directory
 N Y,%ZOS
 S Y=$$DEFDIR(""),%ZOS=$$OS^%ZOSV
 I Y="" S Y=$ZSEARCH("*")
 Q $S(%ZOS["VMS":Y,1:$P(Y,".",1))
 ;
TRNLNM(PATH) ;ef. Expand logical path
 N %ZOS,P1,P2
 S %ZOS=$$OS^%ZOSV,PATH=$G(PATH)
 I %ZOS="VMS" D  Q PATH
 . S P1=PATH_$S(PATH[":":"*.*",1:":*.*")
 . S P2=$ZSEARCH(P1)
 . S:$L(P2) PATH=$S(P2["]":$P(P2,"]",1)_"]",1:$P(P2,":",1)_":")
 . Q
 I %ZOS="NT" D  Q PATH
 . S P1=PATH_$S($E(PATH,$L(PATH))'="\":"\*",1:"*"),P2=$ZSEARCH(P1)
 . S:$L(P2) PATH=$P(P2,"\",1,$L(P2,"\")-1)_"\"
 . Q
 I %ZOS="UNIX" D  Q PATH
 . S P1=PATH_$S($E(PATH,$L(PATH))'="/":"/*",1:"*"),P2=$ZSEARCH(P1)
 . S:$L(P2) PATH=$P(P2,"/",1,$L(P2,"/")-1)_"/"
 . Q
 Q PATH
 ;
DEFDIR(DF) ;ef. Default Dir and frmt
 ;Need to handle NT, VMS and Linux
 N %ZOS,P1,P2 S %ZOS=$$OS^%ZOSV,DF=$G(DF)
 Q:DF="." "" ;Special way to get current dir.
 S:DF="" DF=$G(^XTV(8989.3,1,"DEV"))
 Q:DF="" ""
 ;Check syntax, VMS needs disk:[dir] or logical:
 I %ZOS="VMS" D
 . I DF[":" S P1=$P(DF,":")_":",P2=$P(DF,":",2)
 . E  S P1="",P2=DF
 . I P1="",P2["$" S P1=P2,P2=""  ;Could be a logical
 . I $L(P2) S:P2'["[" P2="["_P2 S:P2'["]" P2=P2_"]"
 . S DF=P1_P2 S:DF'[":" DF=DF_":"
 . Q
 ;Check syntax, Unix needs /mnt/fl, ./fl
 I %ZOS="UNIX" D
 . S DF=$TR(DF,"\","/")
 . S:$E(DF,$L(DF))'="/" DF=DF_"/"
 . Q
 ;Check syntax, NT needs c:\dir\ 
 I %ZOS="NT" D
 . N P1,P2
 . I DF[":" S P1=$P(DF,":")_":",P2=$P(DF,":",2)
 . E  S P1="",P2=DF
 . S P2=$TR(P2,"/","\")
 . I $L(P2) S:".\"'[$E(P2,1) P2="\"_P2 S:$E(P2,$L(P2))'="\" P2=P2_"\"
 . S DF=P1_P2
 . Q
 S DF=$$TRNLNM(DF) ;Resolve logicals
 Q DF
 ;
FL(X) ;Fl len
 N ZOSHP1,ZOSHP2
 S ZOSHP1=$P(X,"."),ZOSHP2=$P(X,".",2)
 I $L(ZOSHP1)>8 S X=4 Q
 I $L(ZOSHP2)>3 S X=4 Q
 Q
 ;
STATUS() ;ef,SR. Return EOF status
 U $I
 Q $$EOF($ZEOF)
 ;
EOF(X) ;Eof flag, pass in $ZEOF
 Q (X=-1)
 ;
MAKEREF(HF,IX,OVF) ;Internal call to rebuild global ref.
 ;Return %ZISHF,%ZISHO,%ZISHI,%ZISUB
 N I,F,MX
 S OVF=$G(OVF,"%ZISHOF")
 S %ZISHI=$QS(HF,IX),MX=$QL(HF) ;
 S F=$NA(@HF,IX-1) ;Get first part
 I IX=1 S %ZISHF=F_"(%ZISHI" ;Build root, IX=1
 I IX>1 S %ZISHF=$E(F,1,$L(F)-1)_",%ZISHI" ;Build root
 S %ZISHO=%ZISHF_","_OVF_",%OVFCNT)" ;Make overflow
 F I=IX+1:1:MX S %ZISHF=%ZISHF_",%ZISUB("_I_")",%ZISUB(I)=$QS(HF,I)
 S %ZISHF=%ZISHF_")"
 Q
 ;
READNXT(REC) ;Read any sized record into array. %ZB has terminator
 N %,I,X,$ES,$ET S REC="",$ET="D READNX^%ZISH Q"
 U IO R X:5 S %ZB=$A($ZB),REC=$E(X,1,255)
 Q:$L(X)<256
 S %=256 F I=1:1 Q:$L(X)<%  S REC(I)=$E(X,%,%+254),%=%+255
 Q
READNX ;Check for EOF
 I $ZE["ENDOFFILE" S %ZA=-1
 S $EC=""
 Q
 ;
FTG(%ZX1,%ZX2,%ZX3,%ZX4,%ZX5) ;ef,SR. Unload contents of host file into global
 ;p1=hostf file directory 
 ;p2=host file name
 ;p3= $NAME REFERENCE INCLUDING STARTING SUBSCRIPT
 ;p4=INCREMENT SUBSCRIPT
 ;p5=Overflow subscript, defaults to "OVF"
 N %ZA,%ZB,%ZC,X,%OVFCNT,%ZISHF,%ZISHO,POP,%ZISUB,$ES,$ET
 N I,%ZISH,%ZISH1,%ZISHI,%ZISHL,%ZISHOF,%ZISHOX,%ZISHS,%ZX,%ZISHY
 S %ZX1=$$DEFDIR($G(%ZX1)),%ZISHOF=$G(%ZX5,"OVF")
 D MAKEREF(%ZX3,%ZX4,"%ZISHOF")
 D OPEN^%ZISH(,%ZX1,%ZX2,"R")
 I POP Q 0
 S %ZC=1,%ZA=0,$ET="S %ZC=0,%ZA=-1,$EC="""" Q"
 U IO F  K %XX D READNXT(.%XX) Q:$$EOF($ZEOF)!%ZA  D
 . S @%ZISHF=%XX
 . I $D(%XX)>2 F %OVFCNT=1:1 Q:'$D(%XX(%OVFCNT))  S @%ZISHO=%XX(%OVFCNT)
 . S %ZISHI=%ZISHI+1
 . Q
 D CLOSE() ;Normal exit
 Q %ZC
 ;
GTF(%ZX1,%ZX2,%ZX3,%ZX4) ;ef,SR. Load contents of global to host file.
 ;p1=$NAME of global reference
 ;p2=incrementing subscript
 ;p3=host file directory
 ;p4=host file name
 N %ZISHY,%ZISHOX
 S %ZISHY=$$MGTF(%ZX1,%ZX2,%ZX3,%ZX4,"W")
 Q %ZISHY
 ;
GATF(%ZX1,%ZX2,%ZX3,%ZX4) ;ef,SR. Append to host file.
 ;
 ;p1=$NAME of global reference
 ;p2=incrementing subscript
 ;p3=host file directory
 ;p4=host file name
 N %ZISHY
 S %ZISHY=$$MGTF(%ZX1,%ZX2,%ZX3,%ZX4,"A")
 Q %ZISHY
 ;
MGTF(%ZX1,%ZX2,%ZX3,%ZX4,%ZX5) ;
 ;p1=$NAME of global reference
 ;p2=incrementing subscript
 ;p3=host file directory
 ;p4=host file name
 N %ZISH,%ZISH1,%ZISHI,%ZISHL,%ZISHS,%ZISHOX,IO,%ZX,Y,%ZC
 D MAKEREF(%ZX1,%ZX2)
 D OPEN^%ZISH(,$G(%ZX3),%ZX4,%ZX5) ;Default dir set in open
 I POP Q 0
 N $ETRAP S $ETRAP="S $EC="""" D CLOSE^%ZISH() Q 0"
 F  Q:'($D(@%ZISHF)#2)  S %ZX=@%ZISHF,%ZISHI=%ZISHI+1 U IO W %ZX,!
 D CLOSE()
 Q 1
 ;