-- Desc ：实现在LUA_PATH中的lua文件中遍历寻找没用到PNG_PATH路径下的png图片，并将其打印出来。
  -- Date ：12:49:28 2014-09-04 
 1 print("Lua Script Start") 2  3 function getFileName( path ) 4     len = string.len(PNG_PATH); 5     return string.sub(path, len+2) --  remove "/" 6 end 7  8 function isInIt( file,name ) 9     --print(file .. " -- " .. name )10     for line in io.lines(file) do11         if isContain(line , name) then 12             return true;13         end14     end15     return false;16 end17 18 function isContain( line , str )19     return string.find(line , str);20 end21 22 PNG_PATH = "user/image" 23 getPngFileTable = io.popen(‘find * ‘ .. PNG_PATH)24 25 pngFileTable = {};26 for file in getPngFileTable:lines() do 27     if string.find(file,"%.png$") then28         fileName = getFileName(file);29         print(fileName)30         table.insert(pngFileTable,fileName);31     end32 end33 print("png count is :"..#pngFileTable);34 35 LUA_PATH = "user/scripts"36 getLuaFileInfo = io.popen(‘find * ‘ .. LUA_PATH)37 luaFileTable = {};38 for file in getLuaFileInfo:lines() do 39     if string.find(file,"%.lua$") then40         --print(file)41         table.insert(luaFileTable,file);42     end43 end44 45 local pairs = pairs46 for _,name in pairs(pngFileTable) do47     flag = 0;48     for _,file in pairs(luaFileTable) do49         if isInIt(file , name) then 50             flag = 1;51             break;52         end53     end54     if flag == 0 then 55         print(name)56     end57 end58 59 print("Lua Script End!")60 61 --Desc: lua io.popen ([prog [, mode]])62     --Starts program prog in a separated process and returns a file handle that 63     --you can use to read data from this program (if mode is "r", the default) 64     --or to write data to this program (if mode is "w").65     --This function is system dependent and is not available on all platforms.