string-replacement function install

routines/StringReplacement.m

@@ -1,6 +1,22 @@
- N I
- N TOK
- N OSTR
- S count=0
- F I=1:1:$L(str," ") S TOK=$P(str," ",I) S:TOK=old TOK=new S:TOK=new count=count+1 S OSTR=$G(OSTR)_" "_TOK
- QUIT $E(OSTR,2,$LENGTH(OSTR))
+ ;https://www.isharkfly.com/t/mumps-string-replacement/15228/1N I
+ READ !,"Enter String:", address
+ READ !,"Old String:", old
+ READ !,"New String:", new
+ DO strReplace(address,old,new,.count)
+ WRITE !, count
+ QUIT
+strReplace(str,old,new,count)
+ SET count=0
+ SET position=0
+
+ FOR {
+    SET position=$FIND(str, old, position)
+    QUIT:position=0
+    SET count=count+1
+    SET position=position
+ }
+
+ WRITE !,count
+ SET str = $replace(str,old, new)
+ WRITE !, str
+ QUIT