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INPUT:
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local str = 'a b c'
str = replace(str, ' b ', ' d ')
print(str)
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a d c
Thanks!
Forum
CS2D
Scripts I need a replace function.
I need a replace function.
2 replies
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INPUT:
Thanks!
it is already the syntax you want
anyway, here is your code:
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function replace(str, pattern, rep)
return string.gsub(str, pattern, rep)
end
string.gsub also accepts magical regular expression patterns, so there's a little more to it if you only want to replace normal text:
https://gist.github.com/VADemon/afb10dbb0d10d99aeb21449752da6285
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do
local function regexEscape(str)
return str:gsub("[%(%)%.%%%+%-%*%?%[%^%$%]]", "%%%1")
end
string.replace = function (str, this, that)
return str:gsub(regexEscape(this), that:gsub("%%", "%%%%")) -- only % needs to be escaped for 'that'
end
end
The regexEscape escapes all magic characters that gsub understands (yes it's a clusterfuck of a pattern, but if you try to do it yourself, it'll make sense).
So 'this' is escaped. But 'that' also needs to be escaped, it understands "%0", "%1..."%9" as stuff to replace from the previously captured string. "%%%%" Does exactly that, transforms single "%" to "%%" so they're no longer an issue.
Quote
-- USAGE:
-- string.replace("mystring", "my", "our")
-- or
-- local teststr = "weird[]str%ing"
-- teststr2 = teststr:replace("weird[]", "cool(%1)")
-- string.replace("mystring", "my", "our")
-- or
-- local teststr = "weird[]str%ing"
-- teststr2 = teststr:replace("weird[]", "cool(%1)")
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