String 如何在lua中找到字符串的一部分,并将其拆分为3部分?(之前、匹配、之后)

String 如何在lua中找到字符串的一部分,并将其拆分为3部分?(之前、匹配、之后),string,split,lua,coronasdk,String,Split,Lua,Coronasdk,假设我有这根绳子,我想把蓝色分开 local str = "The mouse walked by the blue cheese" 这样做 local pre = "The mouse walked by the " local matched = "blue" local post = " cheese" 有什么建议吗?我找了一段时间,感觉被卡住了 我试过这个,它适用于英语,但似乎不适用于阿拉伯语: function split(string, delimiter)

假设我有这根绳子,我想把蓝色分开

local str = "The mouse walked by the blue cheese"
这样做

local pre = "The mouse walked by the "    
local matched = "blue"    
local post = " cheese"
有什么建议吗?我找了一段时间,感觉被卡住了

我试过这个,它适用于英语,但似乎不适用于阿拉伯语:

function split(string, delimiter)
  local result = { }
  local from = 1
  local delim_from, delim_to = string.find( string, delimiter, from )
  while delim_from do
    table.insert( result, string.sub( string, from , delim_from-1 ) )
    from = delim_to + 1
    delim_from, delim_to = string.find( string, delimiter, from )
  end
  table.insert( result, string.sub( string, from ) )
  return result
end

local myStr = "The mouse walked by the blue cheese"

sep = split(myStr, "blue")
print("part1 1: "..sep[1])
print("part2 2: "..sep[2])
编辑===================================================

请告诉我如果有多个目标词要拆分,该怎么办 比如说

local myStr = "the mouse ate the cheese, the mouse ate the cheese!, lot of cheese there !"
这里的问题是它将其拆分为多个,需要的是

before=老鼠吃了after=老鼠吃了奶酪!, 那里有很多奶酪

这是我做的,它适用于英语,但不适用于阿拉伯语

function split4(pString, pPattern)

    local didFind = 0

    if string.find(pString,".") then
        pString = string.gsub(pString,"%.","'.'")
    end

    if pPattern == "." then
        pPattern = "'.'"
    end

    local Table = {}  -- NOTE: use {n = 0} in Lua-5.0
    local FinalTable = {}
    local fpat = "(.-)" .. pPattern
    local last_end = 1
    local s, e, cap = pString:find(fpat, 1)
    while s do
        if s ~= 1 or cap ~= "" then
            print("Found")
            table.insert(Table,cap)
            didFind = didFind + 1
        end
        last_end = e+1
        s, e, cap = pString:find(fpat, last_end)
    end
    if last_end <= #pString then
        print("Found NOT")
        cap = pString:sub(last_end)
        table.insert(Table, cap)
    end
    print(#Table)
    print("totalDidFind "..didFind)


    FinalTable[1] = Table[1]

    if (didFind > 2) then
      local endString = ""
      for z = 2 , didFind do 
        endString = endString..Table[z]..pPattern
      end
      FinalTable[2] = endString

    end

    totalDidFind = 0
    return FinalTable
end
您可以将string.match用于:

现在,您的拆分函数非常简单:

function split(str, match)
    return str:match('^(.-)'..match..'(.*)$') -- Return two resulsts, but not table
end
附言:也许,你想在文本中找到多个匹配项?在这种情况下,请编辑您的问题。

您可以使用string.match with:

现在,您的拆分函数非常简单:

function split(str, match)
    return str:match('^(.-)'..match..'(.*)$') -- Return two resulsts, but not table
end

附言:也许,你想在文本中找到多个匹配项?在这种情况下,请编辑您的问题。

Lua没有正则表达式,而是。类似,但应注意区别。请看一下编辑后的版本好吗?@Deyaelden很抱歉反应极为延迟,但将first*替换为-会在第一次出现时发生此拆分,而不是最后一次。Lua没有正则表达式,而是。类似,但区别应该注意。你能看一下编辑过的版本吗?@Deyaelden很抱歉反应非常延迟,但将first*替换为-会在第一次出现时导致此拆分,而不是最后一次。