| 1 | MAG7UM ;WOIFO/MLH - Imaging - HL7 - utilities - make a message from a parse tree | 
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| 2 | ;;3.0;IMAGING;**11**;14-April-2004 | 
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| 3 | ;; +---------------------------------------------------------------+ | 
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| 4 | ;; | Property of the US Government.                                | | 
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| 5 | ;; | No permission to copy or redistribute this software is given. | | 
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| 6 | ;; | Use of unreleased versions of this software requires the user | | 
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| 7 | ;; | to execute a written test agreement with the VistA Imaging    | | 
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| 8 | ;; | Development Office of the Department of Veterans Affairs,     | | 
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| 9 | ;; | telephone (301) 734-0100.                                     | | 
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| 10 | ;; |                                                               | | 
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| 11 | ;; | The Food and Drug Administration classifies this software as  | | 
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| 12 | ;; | a medical device.  As such, it may not be changed in any way. | | 
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| 13 | ;; | Modifications to this software may result in an adulterated   | | 
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| 14 | ;; | medical device under 21CFR820, the use of which is considered | | 
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| 15 | ;; | to be a violation of US Federal Statutes.                     | | 
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| 16 | ;; +---------------------------------------------------------------+ | 
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| 17 | ;; | 
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| 18 | ; | 
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| 19 | Q | 
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| 20 | ; | 
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| 21 | MAKE(XTREE,XMSG) ; make a parse tree into an array of message lines | 
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| 22 | ; | 
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| 23 | ; INPUT:     XTREE     The name of the parse tree ($NA format) | 
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| 24 | ;   Parse tree structure: | 
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| 25 | ;   @XTREE@(NSEG,0)                    segment name | 
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| 26 | ;   @XTREE@(NSEG,NFLD,NREP,NCMP,NSCM)  element data | 
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| 27 | ;   @XTREE@("B",SEGID,NSEG)            null | 
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| 28 | ; | 
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| 29 | ;            XMSG      The name of a single-dimensional array to be populated | 
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| 30 | ;                      with message lines ($NA format).  This array is | 
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| 31 | ;                      cleared on invocation. | 
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| 32 | ; | 
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| 33 | ;  OUTPUT:   XMSG      The array after being populated with message lines | 
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| 34 | ; | 
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| 35 | N UFS,UCS,URS,UEC,USS ;---------------- HL7 delimiters (universal) | 
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| 36 | N X,I ; --------------------------------- scratch var | 
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| 37 | N ERR ; ------------------------------- error flag | 
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| 38 | N ENC ; ------------------------------- encoding characters string | 
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| 39 | N NSEG ; ------------------------------ segment number in the parse tree | 
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| 40 | N NMSEG ; ----------------------------- segment number in the message | 
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| 41 | N IMSG ; ------------------------------ message array index | 
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| 42 | N SEG ; ------------------------------- segment data | 
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| 43 | N NFLD ; ------------------------------ field number in the segment | 
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| 44 | N FLD ; ------------------------------- field data | 
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| 45 | ; | 
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| 46 | K @XMSG ; refresh target array | 
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| 47 | ; process MSH segment | 
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| 48 | Q:$D(@XTREE)<10 -1 ; parse tree sent? | 
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| 49 | S NSEG=$O(@XTREE@("")),NMSEG=1 | 
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| 50 | Q:$G(@XTREE@(NSEG,0))'="MSH" -2 ; an HL7 message? | 
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| 51 | Q:$D(@XTREE@(NSEG,9,1,1,1))#10=0 -3 ; message type provided? | 
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| 52 | ; get delimiters or define defaults | 
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| 53 | S UFS=$G(@XTREE@(NSEG,1,1,1,1)) I $L(UFS)-1 S UFS="|" | 
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| 54 | S ENC=$G(@XTREE@(NSEG,2,1,1,1)) I $L(ENC)-4 S ENC="^~\&" | 
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| 55 | S UCS=$E(ENC),URS=$E(ENC,2),UEC=$E(ENC,3),USS=$E(ENC,4) | 
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| 56 | I $D(@XTREE@(NSEG,3,1,1,1))#10=0 S @XTREE@(1,3,1,1,1)="VistA Imaging" | 
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| 57 | D NOW^%DTC S @XTREE@(NSEG,7,1,1,1)=%*1000000+17000000000000 | 
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| 58 | I $D(@XTREE@(NSEG,10,1,1,1))#10=0 D | 
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| 59 | . S X="" | 
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| 60 | . F I=1:1:16 S X=X_$E("0123456789ABCDEF",$R(16)+1) | 
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| 61 | . S @XTREE@(NSEG,10,1,1,1)=X | 
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| 62 | . Q | 
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| 63 | I $D(@XTREE@(NSEG,11,1,1,1))#10=0 S @XTREE@(NSEG,11,1,1,1)="D" | 
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| 64 | I $D(@XTREE@(NSEG,12,1,1,1))#10=0 S @XTREE@(NSEG,12,1,1,1)="2.3.1" | 
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| 65 | S SEG="MSH"_UFS_ENC | 
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| 66 | S NFLD=2 | 
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| 67 | F  S NFLD=$O(@XTREE@(NSEG,NFLD)) Q:NFLD=""  D PROCFLD(XTREE,NSEG,NFLD,.SEG) | 
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| 68 | S @XMSG@(NMSEG)=SEG | 
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| 69 | F  S NSEG=$O(@XTREE@(NSEG)) Q:'NSEG  D | 
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| 70 | . K SEG | 
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| 71 | . S NMSEG=NMSEG+1 | 
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| 72 | . S NFLD=0 | 
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| 73 | . F  S NFLD=$O(@XTREE@(NSEG,NFLD)) Q:NFLD=""  D PROCFLD(XTREE,NSEG,NFLD,.SEG) | 
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| 74 | . S @XMSG@(NMSEG)=$G(@XTREE@(NSEG,0))_$S($G(SEG)]"":UFS_SEG,1:"") | 
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| 75 | . Q | 
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| 76 | Q 0 | 
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| 77 | ; | 
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| 78 | PROCFLD(XTREE,XNSEG,XNFLD,XSEG) ; process a field | 
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| 79 | ; | 
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| 80 | ; input:  XTREE   name of MUMPS array for parse tree ($NA format) | 
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| 81 | ;         XNSEG   segment number for parse tree | 
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| 82 | ;         XNFLD   field number for parse tree | 
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| 83 | ;         .XSEG   segment before addition of field | 
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| 84 | ; | 
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| 85 | ; output: .XSEG   segment after addition of field | 
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| 86 | ; | 
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| 87 | N NREP ; ---- repetition (occurrence) number | 
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| 88 | N REP ; ----- repetition data | 
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| 89 | N NCMP ; ---- component number | 
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| 90 | N CMP ; ----- component data | 
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| 91 | N NSCM ; ---- subcomponent number | 
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| 92 | N SCM ; ----- subcomponent data | 
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| 93 | N FLD ; ----- field data | 
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| 94 | ; | 
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| 95 | S NREP="" | 
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| 96 | F  S NREP=$O(@XTREE@(XNSEG,XNFLD,NREP)) Q:NREP=""  D | 
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| 97 | . K REP | 
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| 98 | . S NCMP="" | 
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| 99 | . F  S NCMP=$O(@XTREE@(XNSEG,XNFLD,NREP,NCMP)) Q:NCMP=""  D | 
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| 100 | . . K CMP | 
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| 101 | . . S NSCM="" | 
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| 102 | . . F  S NSCM=$O(@XTREE@(XNSEG,XNFLD,NREP,NCMP,NSCM)) Q:NSCM=""  D | 
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| 103 | . . . S SCM=@XTREE@(XNSEG,XNFLD,NREP,NCMP,NSCM) | 
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| 104 | . . . S $P(CMP,USS,NSCM)=$$ESC(.SCM) | 
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| 105 | . . . Q | 
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| 106 | . . S $P(REP,UCS,NCMP)=CMP | 
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| 107 | . . Q | 
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| 108 | . S $P(FLD,URS,NREP)=REP | 
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| 109 | . Q | 
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| 110 | S $P(XSEG,UFS,NFLD)=$G(FLD) | 
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| 111 | Q | 
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| 112 | ; | 
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| 113 | ESC(XDTA) ;apply escape sequence to data | 
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| 114 | ; Insert an intermediate token, then expand the intermediate token to | 
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| 115 | ; the real escape sequence.  (We have to do 2 steps because the escape | 
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| 116 | ; sequence uses the escape character.) | 
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| 117 | F  Q:XDTA'[UFS  S XDTA=$P(XDTA,UFS)_$C(1)_$P(XDTA,UFS,2,999) | 
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| 118 | F  Q:XDTA'[UCS  S XDTA=$P(XDTA,UCS)_$C(2)_$P(XDTA,UCS,2,999) | 
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| 119 | F  Q:XDTA'[URS  S XDTA=$P(XDTA,URS)_$C(3)_$P(XDTA,URS,2,999) | 
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| 120 | F  Q:XDTA'[UEC  S XDTA=$P(XDTA,UEC)_$C(4)_$P(XDTA,UEC,2,999) | 
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| 121 | F  Q:XDTA'[USS  S XDTA=$P(XDTA,USS)_$C(5)_$P(XDTA,USS,2,999) | 
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| 122 | F  Q:XDTA'[$C(1)  S XDTA=$P(XDTA,$C(1))_UEC_"F"_UEC_$P(XDTA,$C(1),2,999) | 
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| 123 | F  Q:XDTA'[$C(2)  S XDTA=$P(XDTA,$C(2))_UEC_"S"_UEC_$P(XDTA,$C(2),2,999) | 
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| 124 | F  Q:XDTA'[$C(3)  S XDTA=$P(XDTA,$C(3))_UEC_"R"_UEC_$P(XDTA,$C(3),2,999) | 
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| 125 | F  Q:XDTA'[$C(4)  S XDTA=$P(XDTA,$C(4))_UEC_"E"_UEC_$P(XDTA,$C(4),2,999) | 
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| 126 | F  Q:XDTA'[$C(5)  S XDTA=$P(XDTA,$C(5))_UEC_"T"_UEC_$P(XDTA,$C(5),2,999) | 
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| 127 | Q XDTA | 
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