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local fs = require 'bee.filesystem'
---@param path string
---@param errorHandle? fun(string)
---@return table?
return function (path, errorHandle)
fs.create_directories(fs.path(path):parent_path())
local f, err = io.open(path, 'a+b')
if not f then
if errorHandle then
errorHandle(err)
end
return nil
end
local size, err = f:seek('end')
if not size then
if errorHandle then
errorHandle(err)
end
return nil
end
local map = {}
return {
writter = function(id, code)
local offset, err = f:seek('end')
if not offset then
if errorHandle then
errorHandle(err)
end
return false
end
if not code then
map[id] = nil
return true
end
if #code > 1000000 then
return false
end
local suc, err = f:write(code)
if not suc then
if errorHandle then
errorHandle(err)
end
return false
end
map[id] = offset * 1000000 + #code
return true
end,
reader = function(id)
if not map[id] then
return nil
end
local offset = map[id] // 1000000
local len = map[id] % 1000000
local _, err = f:seek('set', offset)
if err then
if errorHandle then
errorHandle(err)
end
return nil
end
local code = f:read(len)
return code
end,
dispose = function ()
f:close()
fs.remove(fs.path(path))
end,
}
end
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