【安全加密】敏感词变体对抗：变形字与谐音的过滤升级设计

local NORM = { ["飛"] = "飞", ["賭"] = "赌", ["Ａ"] = "A", ["ｂ"] = "b" }
local function normalize(text)
    local out = {}
    local i = 1
    while i <= #text do
        local b = string.byte(text, i)
        local len = (b >= 228) and 3 or 1
        local ch = string.sub(text, i, i + len - 1)
        out[#out + 1] = NORM[ch] or ch
        i = i + len
    end
    return table.concat(out)
end
    return table.concat(out)
end

local HOMO = { ["堵"] = "赌", ["都"] = "赌" }
local function homoFold(text)
    for k, v in pairs(HOMO) do
        text = string.gsub(text, k, v)
    end
    return text
end