The OVERLAY statement overlays one string with another:
OVERLAY c1 WITH c2 [ONLY str].
This statement overlays all positions in field c1containing letters which occur in str with the contents of c2. c2remains unchanged. If you omit ONLY str , all positions of c1 containing spaces are overwritten.
If at least one character in c1 was replaced, sy-subrc is set to 0. In all other cases, sy-subrc is set to 4. If c1 is longer than c2, it is overlaid only in the length of c2.
DATA:
t(10) TYPE c VALUE 'a c e g i ',
string LIKE t,
over(10) TYPE c VALUE 'ABCDEFGHIJ',
str(2) TYPE c VALUE
'ai'.
string =
t.
WRITE string.
WRITE / over.
OVERLAY
string WITH over.
WRITE / string.
string = t.
OVERLAY string WITH over ONLY str.
WRITE /
string.
Output:
a c e g i
ABCDEFGHIJ
aBcDeFgHiJ
A c e g I