This is a user-defined function that you can copy and paste into your addon.
Return how many times needle is contained in haystack.
number = <PREFIX>_CountChars(haystack, needle)
Function Parameters[]
Arguments[]
- haystack
- String - The search subject.
- needle
- The string to look for. needle can be a regular expression ('[a-z%s%d]' will count all alphanumeric characters and white spaces)
- Notes
- Arguments are cast into strings before any processing is done.
- The search is not case-sensitive.
Returns[]
- number
- Number of times needle is contained in haystack. If needle is not found, returns 0.
Example[]
number1 = <PREFIX>_CountChars("World of Warcraft", 'o') number2 = <PREFIX>_CountChars("World of Warcraft", 'w[a-z]') number3 = <PREFIX>_CountChars("World of Warcraft", 'r[a-z]') number4 = <PREFIX>_CountChars("World of Warcraft", 'r[a-z][a-z]')
Result[]
number1 = 2 number2 = 2 number3 = 3 number4 = 3
Code[]
function <PREFIX>_CountChars (haystack, needle) haystack = strlower(tostring(haystack)); needle = strlower(tostring(needle)); local ret, pos = 0, 0 for i = 1, strlen(haystack) do local s, e = strfind(haystack, needle, pos) if e then pos = e if s == e then pos = pos + 1 end end if s and e then ret = ret + 1; else break -- If it hasn't found any more, there's no reason to continue end end return ret end