lua-serve/projects/updater/update.lua

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args = {...}
url = "http://lua.gaywine.org"
path = "bin/"
if not fs.exists(path) then
fs.makeDir(path)
end
temp = "temp/"
if not fs.exists(temp) then
fs.makeDir(temp)
end
if #args > 0 then
programToInstall = args[1]
end
if #args > 1 then
print("WARNING: custom paths are currently not supported.")
customPath = shell.resolve(args[2])
end
local function downloadFile(filename)
print("downloading " .. filename .. "...")
local fileUrl = url .. "/files/" .. programToInstall .. "/" .. filename
local result = http.get(fileUrl)
local resultText = result.readAll()
local file = fs.open(temp .. filename, "w")
file.write(resultText)
file.close()
end
local function split(pString, pPattern)
local Table = {} -- NOTE: use {n = 0} in Lua-5.0
local fpat = "(.-)" .. pPattern
local last_end = 1
local s, e, cap = pString:find(fpat, 1)
while s do
if s ~= 1 or cap ~= "" then
table.insert(Table, cap)
end
last_end = e + 1
s, e, cap = pString:find(fpat, last_end)
end
if last_end <= #pString then
cap = pString:sub(last_end)
table.insert(Table, cap)
end
return Table
end
local function getAllFiles()
local indexesUrl = url .. "/indexes/" .. programToInstall
local updateUrl = url .. "/updates/" .. programToInstall
local currentFiles = ""
if fs.exists(path .. "indexes.dat") then
local indexesFile = fs.open(path .. "indexes.dat", "r")
currentFiles = indexesFile.readAll()
indexesFile.close()
end
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local result = http.post(updateUrl, currentFiles)
if result == nil then
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print("error! getting updates for " .. programToInstall)
error()
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end
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local resultText = result.readAll()
local resultTable = split(resultText, "\n")
local result2 = http.get(indexesUrl)
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if result2 == nil then
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print("error! getting indexes for " .. programToInstall)
error()
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end
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local resultText2 = result2.readAll()
local resultTable2 = split(resultText2, "\n")
local newIndexesFile = fs.open(path .. "indexes.dat", "w")
newIndexesFile.write(resultText)
newIndexesFile.close()
local finalResult = {}
for key, value in ipairs(resultTable2) do
local filename = split(value, " ")[1]
for key2, value2 in ipairs(resultTable) do
local valueTable = split(value2, " ")
local filePath = path .. programToInstall .. "/" .. valueTable[1]
if valueTable[2] == "delete" and fs.exists(filePath) then
fs.delete(filePath)
elseif valueTable[2] == "download" then
finalResult[#finalResult + 1] = valueTable[1]
end
end
end
return finalResult
end
local function finishInstall(files)
for key, file in ipairs(files) do
if customPath ~= nil then
print("moving " .. file .. " to " .. customPath .. "...")
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if not fs.exists(customPath) then
fs.makeDir(customPath)
end
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if fs.exists(customPath .. "/" .. file) then
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fs.delete(customPath .. "/" .. file)
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end
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fs.move(temp .. file, customPath .. "/" .. file)
else
print("moving " .. file .. " to " .. path .. programToInstall .. "...")
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if not fs.exists(path .. programToInstall) then
fs.makeDir(path .. programToInstall)
end
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if fs.exists(path .. programToInstall .. "/" .. file) then
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fs.delete(path .. programToInstall .. "/" .. file)
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end
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fs.move(temp .. file, path .. programToInstall .. "/" .. file)
end
end
if customPath ~= nil then
local program = "shell.run(" .. customPath .. "/run.lua)"
file = fs.open(path .. programToInstall .. "/run.lua")
file.write(program)
file.close()
end
fs.delete(temp)
end
if programToInstall == nil then
print("no program specified, updating all...")
local programsFile = fs.open(path .. "programs.dat", "r")
local programsText = programsFile.readAll()
local programsTable = split(programsText, "\n")
for _, value in ipairs(programsTable) do
programToInstall = value
local files = getAllFiles()
for _, value in ipairs(files) do
downloadFile(value)
end
finishInstall(files)
end
else
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print("getting updates...")
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local files = getAllFiles()
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if #files == 0 then
print("no updates found.")
else
for _, value in ipairs(files) do
downloadFile(value)
end
finishInstall(files)
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end
end