source: FOIAVistA/tag/r/KERNEL-XU-A4A7-USC-XG-XLF-XNOA-XPD-XQ-XVIR-ZI-ZOSF-ZOSV-ZT-ZU-%Z-XIP--XQAB--XUC--XUR--ZIN--ZTED/XLFSTR.m@ 628

XLFSTR ;ISC-SF/STAFF - String Functions ;12/19/06  09:45
 ;;8.0;KERNEL;**112,120,400,437**;Jul 10, 1995;Build 2
 ;
UP(X) Q $TR(X,"abcdefghijklmnopqrstuvwxyz","ABCDEFGHIJKLMNOPQRSTUVWXYZ")
 ;
LOW(X) Q $TR(X,"ABCDEFGHIJKLMNOPQRSTUVWXYZ","abcdefghijklmnopqrstuvwxyz")
 ;
STRIP(X,Y) Q $TR(X,$G(Y),"")
 ;
REPEAT(X,Y) ;
 N % Q:'$D(X) "" I $L(X)*$G(Y)>245 Q ""
 S %="",$P(%,X,$G(Y)+1)=""
 Q %
 ;
SPLIT(%SRC,%DLM,%VLIST) ;split a string by delimiter vars in list
 ;returns number of vars in list
 ;usage - s %=$$split(src,dlm,"d1,d2,d3,..")
 N I,V,DV
 S DV=$$DVARS(%VLIST),%DLM=$G(%DLM,",")
 F I=1:1:$L(%VLIST,DV) S V=$P(%VLIST,DV,I) S:V'="" @V=$P(%SRC,%DLM,I)
 Q I
 ;
DVARS(LIST) ;return a delimiter for a list of variables
 Q $S(%VLIST[$C(9):$C(9),%VLIST[";":";",1:",")
 ;
INVERT(X) ;
 N %,%1 S %="" F %1=$L(X):-1:1 S %=%_$E(X,%1)
 Q %
 ;
REPLACE(IN,SPEC) ;See $$REPLACE in MDC minutes.
 Q:'$D(IN) "" Q:$D(SPEC)'>9 IN N %1,%2,%3,%4,%5,%6,%7,%8
 S %1=$L(IN),%7=$J("",%1),%3="",%6=9999 F  S %3=$O(SPEC(%3)) Q:%3=""  S %6(%6)=%3,%6=%6-1
 F %6=0:0 S %6=$O(%6(%6)) Q:%6'>0  S %3=%6(%6) D:$D(SPEC(%3))#2 RE1
 S %8="" F %2=1:1:%1 D RE3
 Q %8
 ;
RE1 S %4=$L(%3),%5=0 F  S %5=$F(IN,%3,%5) Q:%5<1  D RE2
 Q
RE2 Q:$E(%7,%5-%4,%5-1)["X"  S %8(%5-%4)=SPEC(%3)
 F %2=%5-%4:1:%5-1 S %7=$E(%7,1,%2-1)_"X"_$E(%7,%2+1,%1)
 Q
RE3 I $E(%7,%2)=" " S %8=%8_$E(IN,%2) Q
 S:$D(%8(%2)) %8=%8_%8(%2)
 Q
 ;
RJ(%,%1,%2) ;Right justify
 N %3
 S:%1["T" %1=+%1,%=$E(%,1,%1)
 S %3=$J("",%1-$L(%)) S:$D(%2) %3=$TR(%3," ",%2)
 Q %3_%
 ;
LJ(%,%1,%2) ;Left justify
 N %3
 S:%1["T" %1=+%1,%=$E(%,1,%1)
 S %3=$J("",%1-$L(%)) S:$G(%2)]"" %3=$TR(%3," ",%2)
 Q %_%3
 ;
CJ(%,%1,%2) ;Center Justify
 N %3,%4
 S:%1["T" %1=+%1,%=$E(%,1,%1) S %3=%1-$L(%) Q:%3<1 %
 S %3=%3\2,%4=$J("",%3+1) I $G(%2)]"" S %4=$TR(%4," ",%2)
 Q $E(%4,1,%3)_%_$E(%4,1,%1-%3-$L(%))
 ;
QUOTE(%) ;Add quotes to value for concatenation
 S %(%)=0,%=$Q(%)
 Q $P($E(%,1,$L(%)-1),"(",2,999)
 ;
TRIM(%X,%F,%V) ;Trim spaces\char from front(left)/back(right) of string
 N %R,%L
 S %F=$$UP($G(%F,"LR")),%L=1,%R=$L(%X),%V=$G(%V," ")
 I %F["R" F %R=$L(%X):-1:1 Q:$E(%X,%R)'=%V
 I %F["L" F %L=1:1:$L(%X) Q:$E(%X,%L)'=%V
 I (%L>%R)!(%X=%V) Q ""
 Q $E(%X,%L,%R)
 ;
SENTENCE(%X) ;
 ; Converts a string into proper sentence case (first letter of each sentence
 ;  upper case, all the others lower case)
 ; Example Usage:
 ; W $$SENTENCE^XLFSTR("HELLO WORLD!!! THIS IS A CAPITALIZED SENTENCE. (this isn't.)")
 ;  produces
 ; Hello world!!! This is a capitalized sentence. This isn't.
 ;
 ; %S = string during conversion
 ; %P = state flag (1 = next letter should be caps)
 ; I = iteration index
 ; C = current character
 ;
 N %I,%C,%S,%P
 S %S=$$LOW(%X),%P=1
 F %I=1:1:$L(%X) D
 . S %C=$E(%S,%I)
 . I %P,%C?1L S $E(%S,%I)=$$UP(%C),%P=0
 . S:".!?"[%C %P=1
 Q %S
 ;
TITLE(%X) ;
 ; Converts a string into TITLE CASE format (first letter of each word is uppercase)
 ; Example Usage:
 ; W $$TITLE^XLFSTR("THIS IS CAPITALIZED. (this isn't.)")
 ; produces
 ; This Is Capitalized. This Isn't.
 ;
 ; %S = string during conversion
 ; %P = state flag
 ; %I = iteration index
 ; %C = current character
 ;
 N %I,%C,%S,%P
 S %S=$$LOW(%X),%P=1
 F %I=1:1:$L(%S) D
 . S %C=$E(%S,%I)
 . I %P,%C?1L S $E(%S,%I)=$$UP(%C),%P=0
 . S:%C=" " %P=1
 . Q
 Q %S