local tArgs = { ... }
local bExtract = false -- Extract or Pack.
local sDestination = ""
local bRunning = true
local sSplitString = "!dnf32Dsf!"
-- Extra methods --
function printUsage()
print( "Usage: nxp <extract/pack> <.nxpFile/directory>" )
print( " <outputDirectory/.nxpOutputFile>" )
end
-- Compatibility: Lua-5.1; Borrowed from: http://lua-users.org/wiki/SplitJoin
function split(str, pat)
local t = {} -- NOTE: use {n = 0} in Lua-5.0
local fpat = "(.-)" .. pat
local last_end = 1
local s, e, cap = str:find(fpat, 1)
while s do
if s ~= 1 or cap ~= "" then
table.insert(t,cap)
end
last_end = e+1
s, e, cap = str:find(fpat, last_end)
end
if last_end <= #str then
cap = str:sub(last_end)
table.insert(t, cap)
end
return t
end
-------------------
function determineMethod( sArg )
if sArg == "extract" then
return true
elseif sArg == "pack" then
return false
else
return nil
end
end
function checkFileExistance()
if tArgs[1] == "extract" then
if fs.exists( tArgs[2] ) then
if not fs.exists( tArgs[3] ) then
sDestination = tArgs[3]
return true
else
error( "Cannot extract there." )
end
else
error( "Zip to be extracted doesn't exist." )
end
else
if fs.exists( tArgs[2] ) and fs.isDir( tArgs[2] ) then
if not fs.exists( tArgs[3] ) then
sDestination = tArgs[3] .. ".nxp"
return true
else
error( "Cannot transfer package to an existant file." )
end
else
error( "Cannot package " .. tArgs[2] .. "." )
end
end
end
if #tArgs < 3 then
printUsage()
bRunning = false
end
-- NexPack specific functions.
-- Takes a string of a package and splits it into a table that it returns.
-- Format: tPackage[n] = { Name, Contents }
function readPackageIntoTable( sPackage )
local tPackage = split( sPackage, sSplitString )
local tPackage_Appended = {}
local nIndex = 1
for i=1, #tPackage, 2 do
tPackage_Appended[nIndex] = { Name = tPackage[i], Contents = tPackage[i+1] }
nIndex = nIndex + 1
end
return tPackage_Appended
end
-- Takes a unpackaged table and a directory to write the contents of the table into files in the directory passed.
function writePackageToDirectory( tPacked, sDirectory )
local file = nil
for index,value in ipairs( tPacked ) do
file = fs.open( sDirectory .. "/" .. tPacked[index].Name, "w" )
file.write( tPacked[index].Contents )
file.close()
end
end
if bRunning then
bExtract = determineMethod( tArgs[1] )
if bExtract ~= nil then
-- Extract the selected package.
if bExtract then
-- Make sure all paths and files are in their correct places and or states.
if checkFileExistance() then
-- Create the directory we'll be extracting this package to.
fs.makeDir( tArgs[3] )
-- Get the package in a string format for splitting.
local package = fs.open( tArgs[2], "r" )
local packageContents = package.readAll()
package.close()
-- Get the package contents into a table for writing into separate files.
local tPackageContents = readPackageIntoTable( packageContents )
-- Format: tPackageContents[n] = { Name, Contents }
-- Write the package table into separate files.
writePackageToDirectory( tPackageContents, tArgs[3] )
end
-- Package the selected directory.
else
-- Make sure all paths and files are in their correct places or states.
if checkFileExistance() then
local sPackage = sSplitString -- The final string of the package.
local sDir = tArgs[2]
local tContents = fs.list( sDir )
local tFiles = {} -- The files will have their full path in their name!
-- Seperate all objects in the selected directory so only the files are packaged.
for index, value in ipairs( tContents ) do
if not fs.isDir( sDir .. "/" .. value ) then
table.insert( tFiles, sDir .. "/" .. value ) -- The fiels will have their full path in their name!
end
end
-- Read the files into the proper format within a file.
local file = nil
local fileContents = ""
for index,value in ipairs( tFiles ) do
file = fs.open( value, "r" )
fileContents = file.readAll()
file.close()
sPackage = sPackage .. fs.getName( value ) .. sSplitString .. fileContents .. sSplitString
end
file = fs.open( sDestination, "w" )
file.write( sPackage )
file.close()
end
end
else
printUsage()
end
end