刚刚写的一个lua下解释csv的工具。

csvtool = {}

function csvtool:csv2table(filename)
    if type(filename) ~= "string" or filename == "" then
        print("the filename is not a string or a empty string")
        return nil
    end
    local filepath = cc.FileUtils:getInstance():fullPathForFilename(filename)
    local filedate = cc.FileUtils:getInstance():getStringFromFile(filepath)
    print(filedate)
    local dataByLine = Split(filedate,'\n')
    local titleArray = Split(dataByLine[],',')
    local lineIndex =
    local titleSize = table.getn(titleArray)
    local returnTable = {}
    for line = ,table.getn(dataByLine)- do
       local dataByLien_split = Split(dataByLine[line],',')
        returnTable[lineIndex] = {}
        for i = ,titleSize do
            returnTable[lineIndex][titleArray[i]] = dataByLien_split[i]
        end
        lineIndex = lineIndex+
    end
    return returnTable
end

function csvtool:returnCsvTableTitle(csvtable)
    local titleTable = {}
    local titleIndex =
    for key, var in pairs(csvtable[]) do
        titleTable[titleIndex] = key
        titleIndex = titleIndex +
    end
    return titleTable
end

function csvtool:returnScvTitleIndex(csvtable,findtitlename)
    if type(csvtable) ~= "table" or table.getn(csvtable) ==   then
        print("the argment 1 is not a csvtable or is a empty table")
        return nil
    end
    if findtitlename == "" or type(findtitlename) ~= "string" then
        print("the findtitlename is a empty string or the type not a string")
        return nil
    end
    local csvtitle = csvtool:returnCsvTableTitle(csvtable)
    for key, var in pairs(csvtitle) do
        if var == findtitlename then
            return key
        end
    end
    return nil
end

function csvtool:findLineByKeyAndValue(csvtable,key,value)
    if type(csvtable) ~= "table" or table.getn(csvtable) ==   then
        print("the argment 1 is not a csvtable or is a empty table")
        return nil
    end
    if type(key) ~= "string" or key == "" then
        print("the argment 2 is not a string or is a empty string")
        return nil
    end
    if csvtable[][key] == nil then
        print("the key is not found in csvtable")
        return nil
    end
    local linereturn = {}
    value = tostring(value)
    local isFound = false
    for k, v in pairs(csvtable) do
       if v[key] == value then
           isFound = true
           table.insert(linereturn,v)
       end
    end
    if isFound then
        return linereturn
        else
        print("not found this key-value item")
        return nil
    end
end

function csvtool:findoneLineByKeyAndValue(csvtable,key,value)
    if type(csvtable) ~= "table" or table.getn(csvtable) ==   then
        print("the argment 1 is not a csvtable or is a empty table")
        return nil
    end
    if type(key) ~= "string" or key == "" then
        print("the argment 2 is not a string or is a empty string")
        return nil
    end
    if csvtable[][key] == nil then
        print("the key is not found in csvtable")
        return nil
    end
    local linereturn = {}
    value = tostring(value)
    for k, v in pairs(csvtable) do
        if v[key] == value then
            return v
        end
    end
    print("not found this key-value item")
    return nil
end

function csvtool:findValueByOneKeyAndValue(csvtable,findkey,anotherkey,anothervalue) --find a value by another key-value
    if type(csvtable) ~= "table" or table.getn(csvtable) ==  then
        print("the argment 1 is not a csvtable or is a empty table")
        return nil
    end
    if type(findkey) ~= "string" or findkey == "" then
        print("the argment 2 is not a string or is a empty string")
        return nil
    end
    if csvtable[][findkey] == nil then
        print("the find key is not found in csvtable")
        return nil
    end
    if csvtable[][anotherkey] == nil then
        print("the another key is not found in csvtable")
        return nil
    end
    local finditem = self:findoneLineByKeyAndValue(csvtable,anotherkey,anothervalue)
    local foundvalue = finditem[findkey]
    return foundvalue --string
end

function csvtool:returnOneRowByKey(csvtable, rowkey)
    if type(csvtable) ~= "table" or table.getn(csvtable) ==  then
        print("the argment 1 is not a table or a empty table")
        return nil
    end
    if type(rowkey) ~= "string" or rowkey == "" then
        print("the argment 2 is not a string or is a empty string")
        return nil
    end
    if csvtable[][rowkey] == nil then
        print("the table is not have the rowkey row")
        return nil
    end
    local returnRow = {}
    local returnRowIndex =
    for k, v in pairs(csvtable) do
        returnRow[returnRowIndex] = v[rowkey]
        returnRowIndex = returnRowIndex +
    end
    return returnRow
end

function csvtool:getcsvsize(filename)
    local csvtable = self:csv2table(filename)
    local size = table.getn(csvtable)
    return size
end

function Split(szFullString, szSeparator)
    local nFindStartIndex =
    local nSplitIndex =
    local nSplitArray = {}
    while true do
        local nFindLastIndex = string.find(szFullString, szSeparator, nFindStartIndex)
        if not nFindLastIndex then
        nSplitArray[nSplitIndex] = string.sub(szFullString, nFindStartIndex, string.len(szFullString))
        break
    end
    nSplitArray[nSplitIndex] = string.sub(szFullString, nFindStartIndex, nFindLastIndex - )
    nFindStartIndex = nFindLastIndex + string.len(szSeparator)
    nSplitIndex = nSplitIndex +
    end
    return nSplitArray
end