26 lines
1.0 KiB
Lua
26 lines
1.0 KiB
Lua
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-- So that in addition to regex.gsub(pattern, string), we can also do pattern:gsub(string).
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regex.__index = function(table, key) return regex[key]; end
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regex.match = function(pattern_string, string)
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local pattern = type(pattern_string) == "userdata" and pattern_string or regex.compile(pattern_string)
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return regex.cmatch(pattern, string)
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end
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-- Build off matching. For now, only support basic replacements, but capture groupings should be doable.
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-- We can even have custom group replacements and transformations and stuff in lua.
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regex.gsub = function(pattern_string, string, replacement)
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local pattern = type(pattern_string) == "userdata" and pattern_string or regex.compile(pattern_string)
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local offset, result, str, indices = 0, "", string
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repeat
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str = str:sub(offset)
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indices = { regex.cmatch(pattern, str) }
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if #indices > 0 then
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result = result .. str:sub(offset, indices[1] - 1) .. replacement
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offset = indices[2]
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end
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until #indices == 0 or indices[1] == indices[2]
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return result .. str:sub(offset - 1)
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end
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