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DDSLIB	;SFISC/MKO-LIBRARY FUNCTIONS ;01:37 PM  6 Sep 1994
	;;21.0;VA FileMan;;Dec 28, 1994
	;Per VHA Directive 10-93-142, this routine should not be modified.
FIND(E,C,S)	;Find in expression E, starting from pos S, the char pos
	;after the next occurrence of char C, ignoring those within quoted
	;strings.
	N I,J,P
	S:'$D(S) S=1
	F  D  Q:$D(P)
	. S I=$F(E,C,S),J=$F(E,"""",S)
	. I 'I S P=I Q
	. I J,J<I S S=$$AFTQ(E,J-1) Q
	. S P=I
	Q P
	;
PIECE(E,C,N1,N2)	;Return the N1th to N2th C-piece of E
	;ignoring those within quoted strings
	;Start looking from pos 1
	N I,J,S,F
	S:'$D(N1) N1=1 Q:'N1
	S:'$D(N2) N2=N1 Q:N2<N1
	S S=1 F I=1:1:N1-1 S S=$$FIND(E,C,S) Q:'S
	Q:'S $S(N1=1:E,1:"")
	S F=S F I=1:1:N2-N1+1 S F=$$FIND(E,C,F) Q:'F
	Q:'F $E(E,S,999)
	Q $E(E,S,F-2)
	;
RPAR(E,S)	;Find in expression E, from char pos S (the position
	;of the left paren) the char pos after the right paren,
	;ignoring nested parens, or parens within quotes
	N I,L,P,R
	S P=1,I=S+1
	F  D  Q:'P
	. S R=$$FIND(E,")",I),L=$$FIND(E,"(",I)
	. I L,L<R S P=P+1,I=L Q
	. S P=P-1,I=R
	Q I
	;
AFTQ(E,I)	;Return character position after quoted string
	;E = string, I=character position of first quote
	S:'$G(I) I=1
	F  S I=$F(E,"""",I+1) Q:$E(E,I)'=""""
	S:'I I=$L(E)+1
	Q I
	;
QT(X)	;Return X quoted
	Q:$G(X)="" """"""
	S X(X)="",X=$Q(X(""))
	Q $E(X,3,$L(X)-1)
	;
UQT(X)	;Return quoted string X unquoted
	Q:$G(X)="" ""
	S @("X("_X_")=""""")
	Q $O(X(""))
	;
FIELD(DDP,FLD)	;Get field number
	N F,P
	I FLD="" D BLD^DIALOG(202,"field") Q ""
	S:$E(FLD)="""" FLD=$$UQT($E(FLD,1,$$AFTQ(FLD)-1))
	S F=FLD,P("FILE")=DDP
	I FLD'=+$P(FLD,"E") D  Q:$G(DIERR) ""
	. S F=$O(^DD(DDP,"B",FLD,""))
	. I F="" S P(1)=FLD D BLD^DIALOG(501,.P)
	;
	I $D(^DD(DDP,F,0))[0 S P(1)="#"_F D BLD^DIALOG(501,.P) Q ""
	Q F
	;
GETFLD(FD,BK,PG,DDS,DDSPG,DDSBK,DDSFLG)	;Return "DDO,bk#,pg#"
	;DDSPG=current page, DDSBK=current block
	; -- when block and page are optional
	;PG is required only if block order is sent
	;DDSFLG["F" means field must be form-only
	N F,B,P,N
	I FD?.N.1"."1.N1",".N.1"."1.N,BK="",PG="" Q FD
	S:$E($G(FD))="""" FD=$$UQT(FD)
	S:$E($G(BK))="""" BK=$$UQT(BK)
	S:$E($G(PG))="""" PG=$$UQT(PG)
	S P=+$G(DDSPG),B=+$G(DDSBK)
	D @$S($G(PG)]"":"PG",$G(BK)]"":"BK",1:"FD") Q:$G(DIERR) ""
	Q F_","_B_","_P
	;
PG	;Get internal page number
	I '$G(DDS) D BLD^DIALOG(3084) Q
	S N=PG=+$P(PG,"E")
	I N S P=$O(^DIST(.403,+DDS,40,"B",PG,""))
	E  I PG?1"`".N.1"."1.N S P=+$P(PG,"`",2),N=2
	E  S P=$O(^DIST(.403,+DDS,40,"C",$$UPCASE(PG),""))
	;
	I $D(^DIST(.403,+DDS,40,+P,0))[0 D BLD^DIALOG(3023,$S(N=2:"#",N:"number ",1:"named ")_PG) Q
	;
	I BK="" D  Q:$G(DIERR)
	. S BK=$O(^DIST(.403,+DDS,40,P,40,"AC",""))
	. I BK="" D BLD^DIALOG(3055,$S(N:"number ",1:"named ")_PG)
	;
BK	;Get internal block number
	S N=BK=+$P(BK,"E")
	I N D  Q:$G(DIERR)
	. I P S B=$O(^DIST(.403,+DDS,40,P,40,"AC",BK,"")) Q
	. D BLD^DIALOG(3085)
	E  I BK?1"`".N.1"."1.N S B=+$P(BK,"`",2),N=2
	E  D  Q:$G(DIERR)
	. S B=$O(^DIST(.404,"B",BK,""))
	. I B="" D BLD^DIALOG(3051,BK) Q
	. S B=$O(^DIST(.403,+DDS,40,P,40,"B",B,""))
	;
	I P,$D(^DIST(.403,+DDS,40,P,40,+B,0))[0 D  Q
	. N P1
	. S P1(1)=$S(N=2:"#",N:"order ",1:"")_BK
	. S P1(2)="number "_$P(^DIST(.403,+DDS,40,P,0),U)_$S($G(^(1))]"":" ("_$P(^(1),U)_")",1:"")
	. D BLD^DIALOG(3053,.P1)
	;
	I FD="" D  Q:$G(DIERR)
	. S FD=$O(^DIST(.404,B,40,"B",""))
	. D:FD="" BLD^DIALOG(3071,$P(^DIST(.404,B,0),U))
	;
FD	;Get internal field number
	I 'B D BLD^DIALOG(3082) Q
	S N=FD=+$P(FD,"E")
	I N S F=$O(^DIST(.404,B,40,"B",FD,""))
	E  I FD?1"`".N.1"."1.N S F=+$P(FD,"`",2),N=2
	E  D  Q:$G(DIERR)
	. N X
	. S FD=$$UPCASE(FD),X=$S($D(^DIST(.404,B,40,"D",FD)):"D",1:"C")
	. S F=$O(^DIST(.404,B,40,X,FD,""))
	;
	I $D(^DIST(.404,B,40,+F,0))[0 D
	. N P
	. S P(1)=$S(N=2:"#",N:"order ",1:"with caption or unique name ")_FD
	. S P(2)=$P(^DIST(.404,B,0),U)
	. D BLD^DIALOG(3072,.P)
	;
	I '$G(DIERR),$G(DDSFLG)["F","^2^4^"'[(U_$P($G(^DIST(.404,B,40,+F,0)),U,3)_U) D BLD^DIALOG(3081)
	Q
	;
UPCASE(X)	;
	;Return X in uppercase
	Q $TR(X,"abcdefghijklmnopqrstuvwxyz","ABCDEFGHIJKLMNOPQRSTUVWXYZ")