offset(stringExpression1,stringExpression2)
Function; returns an integer indicating the position of the first character of a string in another string. This function returns 0 if the first string is not found in the second string. Lingo counts spaces as characters in both strings.
On the Macintosh, the string comparison is not sensitive to case or diacritical marks. For example, Lingo considers a and Å to be the same character on the Macintosh.
stringExpression1 Required. Specifies the sub-string to search for in stringExpression2.
stringExpression2 Required. Specifies the string that contains the sub-string stringExpression1.
This statement displays in the Message window the beginning position of the string "media" within the string "Macromedia":
put offset("media","Macromedia")
The result is 6.
This statement displays in the Message window the beginning position of the string "Micro" within the string "Macromedia":
put offset("Micro", "Macromedia")
The result is 0, because "Macromedia" doesn't contain the string "Micro".
This handler finds all instances of the string represented by stringToFind within the string represented by input and replaces them with the string represented by stringToInsert:
-- Lingo syntax
on SearchAndReplace input, stringToFind, stringToInsert
output = ""
findLen = stringToFind.length - 1
repeat while input contains stringToFind
currOffset = offset(stringToFind, input)
output = output & input.char [1..currOffset]
delete the last char of output
output = output & stringToInsert
delete input.char [1.. (currOffset + findLen)]
end repeat
set output = output & input
return output
end
// JavaScript syntax
function SearchAndReplace(input, stringToFind, stringToInsert) {
output = "";
findLen = stringToFind.length - 1;
do {
currOffset = offset(stringToFind, input);
output = output + input.char[0..currOffset];
output = output.substr(0,output.length-2);
output = output + stringToInsert;
input = input.substr(currOffset+findLen,input.length);
} while (input.indexOf(stringToFind) >= 0);
output = output + input;
return output;
}
chars(), length(), contains, starts