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OC-PsychOS2/exec/fget.lua

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2019-07-23 00:11:40 -04:00
local minitel = require "minitel"
local tA = {...}
local function parseURL(url)
local proto,addr = url:match("(.-)://(.+)")
addr = addr or url
local hp, path = addr:match("(.-)(/.*)")
hp, path = hp or addr, path or "/"
local host, port = hp:match("(.+):(.+)")
host = host or hp
return proto, host, port, path
end
local proto, host, port, path = parseURL(tA[1])
proto,port = proto or "fget", port or 70
local fname, rtype = tA[2] or "-", tA[3] or "t"
local sock = minitel.open(host,port)
local f = nil
if fname ~= "-" then
f = io.open(fname,"w")
if not f then error("couldn't open file for writing") end
else
f = io.open(os.getenv("t"))
f.close = function() end
end
if not sock then error("couldn't open connection to host") end
sock:write(string.format("%s%s\n",rtype,path))
local rtype, buf = "", ""
repeat
coroutine.yield()
rtype = sock:read(1)
until rtype ~= ""
repeat
coroutine.yield()
buf = sock:read("*a")
f:write(buf)
until sock.state == "closed" and buf == ""
f:close()