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-- need low-level mechnism to detect android to avoid recursive dependency
local isAndroid, android = pcall(require, "android")
local lfs = require("libs/libkoreader-lfs")
local DataStorage = {}
local data_dir
local full_data_dir
function DataStorage:getDataDir()
if data_dir then return data_dir end
if isAndroid then
data_dir = android.getExternalStoragePath() .. "/koreader"
elseif os.getenv("UBUNTU_APPLICATION_ISOLATION") then
local app_id = os.getenv("APP_ID")
local package_name = app_id:match("^(.-)_")
-- confined ubuntu app has write access to this dir
data_dir = string.format("%s/%s", os.getenv("XDG_DATA_HOME"), package_name)
elseif os.getenv("APPIMAGE") or os.getenv("KO_MULTIUSER") then
local user_rw = jit.os == "OSX" and "Library/Application Support" or ".config"
data_dir = string.format("%s/%s/%s", os.getenv("HOME"), user_rw, "koreader")
else
data_dir = "."
end
if lfs.attributes(data_dir, "mode") ~= "directory" then
lfs.mkdir(data_dir)
end
return data_dir
end
function DataStorage:getHistoryDir()
return self:getDataDir() .. "/history"
end
function DataStorage:getSettingsDir()
return self:getDataDir() .. "/settings"
end
function DataStorage:getFullDataDir()
if full_data_dir then return full_data_dir end
if string.sub(self:getDataDir(), 1, 1) == "/" then
full_data_dir = self:getDataDir()
elseif self:getDataDir() == "." then
full_data_dir = lfs.currentdir()
end
return full_data_dir
end
local function initDataDir()
local sub_data_dirs = {
"cache", "clipboard",
"data", "data/dict", "data/tessdata",
"history", "ota", "plugins",
"screenshots", "settings", "styletweaks",
}
for _, dir in ipairs(sub_data_dirs) do
local sub_data_dir = string.format("%s/%s", DataStorage:getDataDir(), dir)
if lfs.attributes(sub_data_dir, "mode") ~= "directory" then
lfs.mkdir(sub_data_dir)
end
end
end
initDataDir()
return DataStorage