lua常用字符分离（gmatch）及替换（gsub）模式实例

1. 分离字符

local function stringSplit(param)--分离字符
    local pattern = {}
    if string.find(param, "\n") ~= nil then
        for k, v in param:gmatch('([^=]+)=([^\n]*)\n?') do
            --print(k, v)
            pattern[k] = v
        end
    else
        for k, v in param:gmatch('([^=]+)=([^,]*),?') do
            --print(k,"   ", v)
            pattern[k] = v
        end
    end
    return pattern
end

--  分离字符
local function StringToTable(s)
    local tb = {}
    for utfChar in string.gmatch(s, "[%z\1-\127\194-\244][\128-\191]*") do
        table.insert(tb, utfChar)
    end
    return tb
end

local function test() --分离字符
    local s="xx千里之外12"
    for k,v in pairs(StringToTable(s)) do
        print("v1:",v,"  k:",k)
    end

    local param=  "0==123\nWOOD==555\nIRON==4\nSTONE==9\nFOOD==11"
    local pattern={}
    for k, v in pairs(stringSplit(param)) do
        pattern[k] = v
        print("k:",k,"  v:",v)
    end
end

2. 字符替换

local function test2() --字符替换
    local y="{AA},{BB}"
    local conKeyName={
        AA=3,
        BB=6,
    }
    local cc=y:gsub('{([^}]+)}',conKeyName) --字符替换
    print("cc:",cc) --3,6

    local formatted=-123456789
    formatted= string.gsub(formatted, "^(-?%d+)(%d%d%d)", '%1,%2') --字符替换
    print("formatted:",formatted) --123456,789
end