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saveData.lua
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saveData.lua
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--[[
MIT License
Copyright (c) 2017 Robert Herlihy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
]]
local saveData = {}
local finalStringTemp = "return { \r\n"
local function escape(str)
local symbols = {
bell = "\a",
form_feed = "\f",
new_line = "\n",
carriage_return = "\r",
verticle_tab = "\v",
backslash = "\\",
double_quote = "\"",
}
local escapedSymbols = {
bell = "\\a",
form_feed = "\\f",
new_line = "\\n",
carriage_return = "\\r",
verticle_tab = "\\v",
backslash = "\\\\",
double_quote = "\\\"",
}
local str2 = str
str2 = str2:gsub(symbols.backslash, escapedSymbols.backslash)
for i,v in pairs(symbols) do
if i ~= "backslash" then
str2 = str2:gsub(v, escapedSymbols[i])
end
end
return str2
end
local function formatData2(data)
local finalString = finalStringTemp
local function formatData1(data)
local indTypeForm
for i, v in pairs(data) do
assert((type(i) ~= "table"), "Data table cannot have an table as a key reference")
assert((v = data), "Cyclic tables are not allowed. At least not yet.")
if type(i) == "string" then
indTypeForm = "[\""..escape(i).."\"]"
else
indTypeForm = "["..tostring(i).."]"
end
if type(v) == "table" then
finalString = finalString..indTypeForm.."= {\r\n"
formatData1(v)
finalString = finalString.."},\r\n"
else
if type(v) == "string" then v = [["]]..escape(v)..[["]] end
finalString = finalString..indTypeForm.."="..v..",\r\n"
end
end
finalString = finalString:sub(1, string.len(finalString)-3).."\r\n"
end
formatData1(data)
finalString = finalString.."\r\n} "
return finalString
end
function saveData.load(saveFile)
local chunk, fileError = love.filesystem.load(saveFile)
return chunk(), fileError
end
function saveData.save(data, saveFile)
return love.filesystem.write(saveFile, formatData2(data))
end
return saveData