mirror of
https://github.com/osmarks/random-stuff
synced 2024-11-08 13:39:53 +00:00
47 lines
1.6 KiB
Lua
47 lines
1.6 KiB
Lua
|
local tape = peripheral.find "tape_drive"
|
||
|
|
local url, opt = ...
|
||
|
|
if not tape then error "Tape drive required." end
|
||
|
|
if not url then error "Specify a URL to download. This may need to be in quotes." end
|
||
|
|
|
||
|
|
if opt == "range" then
|
||
|
|
print "Fetching in range mode"
|
||
|
|
-- horrible bodge to fetch content length as CC appears to mess it up
|
||
|
|
local test = http.get { url = url, binary = true, headers = { Range = "bytes=0-1" } }
|
||
|
|
local headers = test.getResponseHeaders()
|
||
|
|
test.close()
|
||
|
|
local range = headers["Content-Range"]
|
||
|
|
if not range then error "range not supported?" end
|
||
|
|
local z = tonumber(range:match "0%-1/(%d+)")
|
||
|
|
print("total size is", z / 1e6, "MB")
|
||
|
|
local pos = 0
|
||
|
|
local chunk_size = 6e6 -- maximum is 12MB
|
||
|
|
if z > tape.getSize() then printError "tape too small, will be truncated" end
|
||
|
|
while true do
|
||
|
|
local was = pos
|
||
|
|
pos = pos + chunk_size
|
||
|
|
local range = ("bytes=%d-%d"):format(was, pos - 1)
|
||
|
|
local h = http.get { url = url, binary = true, headers = { Range = range } }
|
||
|
|
tape.write(h.readAll())
|
||
|
|
h.close()
|
||
|
|
print("fetched up to", pos / 1e6, "MB")
|
||
|
|
if pos > z then print "done!" break end
|
||
|
|
end
|
||
|
|
print "written successfully"
|
||
|
|
return
|
||
|
|
end
|
||
|
|
|
||
|
|
print "Downloading..."
|
||
|
|
local h = http.get(url, nil, true) -- binary mode
|
||
|
|
local data = h.readAll()
|
||
|
|
h.close()
|
||
|
|
print "Downloaded."
|
||
|
|
|
||
|
|
if opt ~= "norestart" then
|
||
|
|
print "Seeking to start."
|
||
|
|
tape.seek(-tape.getPosition())
|
||
|
|
end
|
||
|
|
|
||
|
|
if #data > (tape.getSize() - tape.getPosition()) then printError "WARNING: Data is longer than tape." end
|
||
|
|
|
||
|
|
tape.write(data)
|
||
|
|
print "Data written."
|