Só pra não perder se der merda.
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28 changed files with 194 additions and 200 deletions
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@ -1,7 +1,7 @@
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This directory contains code that is more useful than the examples. This code
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*is* supported.
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lua.lua and luasocket.lua
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lua.lua
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These are modules to suport dynamic loading of LuaSocket by the stand alone
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Lua Interpreter with the use of the "require" function. For my Mac OS X
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@ -1,5 +1,5 @@
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require("ltn12")
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require("mime")
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local ltn12 = require("ltn12")
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local mime = require("mime")
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local source = ltn12.source.file(io.stdin)
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local sink = ltn12.sink.file(io.stdout)
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local convert
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@ -4,15 +4,14 @@
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-- Author: Diego Nehab
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-- RCS ID: $Id$
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-----------------------------------------------------------------------------
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require"http"
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socket.http.TIMEOUT = 10
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local http = require("http")
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local url = require("url")
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http.TIMEOUT = 10
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cache = {}
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function readfile(path)
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path = socket.url.unescape(path)
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path = url.unescape(path)
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local file, error = io.open(path, "r")
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if file then
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local body = file:read("*a")
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@ -21,32 +20,32 @@ function readfile(path)
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else return nil, error end
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end
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function getstatus(url)
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local parsed = socket.url.parse(url, { scheme = "file" })
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if cache[url] then return cache[url] end
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function getstatus(u)
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local parsed = url.parse(u, {scheme = "file"})
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if cache[u] then return cache[u] end
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local res
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if parsed.scheme == "http" then
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local request = { url = url, method = "HEAD" }
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local response = socket.http.request(request)
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local request = {url = u, method = "HEAD"}
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local response = http.request(request)
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if response.code == 200 then res = nil
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else res = response.status or response.error end
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elseif parsed.scheme == "file" then
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local file, error = io.open(socket.url.unescape(parsed.path), "r")
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local file, error = io.open(url.unescape(parsed.path), "r")
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if file then
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file:close()
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res = nil
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else res = error end
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else res = string.format("unhandled scheme '%s'", parsed.scheme) end
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cache[url] = res
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cache[u] = res
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return res
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end
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function retrieve(url)
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local parsed = socket.url.parse(url, { scheme = "file" })
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function retrieve(u)
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local parsed = url.parse(u, { scheme = "file" })
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local body, headers, code, error
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local base = url
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local base = u
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if parsed.scheme == "http" then
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body, headers, code, error = socket.http.get(url)
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body, headers, code, error = http.get(u)
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if code == 200 then
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base = base or headers.location
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end
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@ -62,19 +61,19 @@ function getlinks(body, base)
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local links = {}
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-- extract links
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body = string.gsub(body, '[Hh][Rr][Ee][Ff]%s*=%s*"([^"]*)"', function(href)
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table.insert(links, socket.url.absolute(base, href))
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table.insert(links, url.absolute(base, href))
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end)
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body = string.gsub(body, "[Hh][Rr][Ee][Ff]%s*=%s*'([^']*)'", function(href)
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table.insert(links, socket.url.absolute(base, href))
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table.insert(links, url.absolute(base, href))
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end)
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string.gsub(body, "[Hh][Rr][Ee][Ff]%s*=%s*(.-)>", function(href)
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table.insert(links, socket.url.absolute(base, href))
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table.insert(links, url.absolute(base, href))
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end)
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return links
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end
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function checklinks(url)
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local base, body, error = retrieve(url)
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function checklinks(u)
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local base, body, error = retrieve(u)
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if not body then print(error) return end
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local links = getlinks(body, base)
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for _, l in ipairs(links) do
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@ -91,5 +90,5 @@ if table.getn(arg) < 1 then
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end
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for _, a in ipairs(arg) do
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print("Checking ", a)
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checklinks(socket.url.absolute("file:", a))
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checklinks(url.absolute("file:", a))
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end
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@ -4,7 +4,7 @@
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-- Author: Diego Nehab
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-- RCS ID: $Id$
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-----------------------------------------------------------------------------
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require"socket"
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local socket = require("socket")
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function get_status(sock, valid)
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local line, err = sock:receive()
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defs, err = dict_get(arg[1], arg[2])
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print(defs or err)
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else
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io.write("Usage:\n luasocket dict.lua <word> [<dictionary>]\n")
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io.write("Usage:\n lua dict.lua <word> [<dictionary>]\n")
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end
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@ -1,6 +1,5 @@
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require"mime.lua"
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require"ltn12.lua"
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local mime = require("mime")
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local ltn12 = require("ltn12")
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local marker = '\n'
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if arg and arg[1] == '-d' then marker = '\r\n' end
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local filter = mime.normalize(marker)
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39
etc/get.lua
39
etc/get.lua
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-- Author: Diego Nehab
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-- RCS ID: $Id$
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-----------------------------------------------------------------------------
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require"http"
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require"ftp"
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require"url"
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socket = require("socket")
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http = require("http")
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ftp = require("ftp")
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url = require("url")
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-- formats a number of seconds into human readable form
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function nicetime(s)
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@ -84,55 +85,55 @@ function stats(size)
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end
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-- determines the size of a http file
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function gethttpsize(url)
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local respt = socket.http.request {method = "HEAD", url = url}
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function gethttpsize(u)
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local respt = http.request {method = "HEAD", url = u}
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if respt.code == 200 then
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return tonumber(respt.headers["content-length"])
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end
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end
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-- downloads a file using the http protocol
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function getbyhttp(url, file)
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function getbyhttp(u, file)
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local save = ltn12.sink.file(file or io.stdout)
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-- only print feedback if output is not stdout
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if file then save = ltn12.sink.chain(stats(gethttpsize(url)), save) end
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local respt = socket.http.request {url = url, sink = save }
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if file then save = ltn12.sink.chain(stats(gethttpsize(u)), save) end
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local respt = http.request {url = u, sink = save }
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if respt.code ~= 200 then print(respt.status or respt.error) end
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end
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-- downloads a file using the ftp protocol
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function getbyftp(url, file)
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function getbyftp(u, file)
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local save = ltn12.sink.file(file or io.stdout)
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-- only print feedback if output is not stdout
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-- and we don't know how big the file is
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if file then save = ltn12.sink.chain(stats(), save) end
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local gett = socket.url.parse(url)
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local gett = url.parse(u)
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gett.sink = save
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gett.type = "i"
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local ret, err = socket.ftp.get(gett)
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local ret, err = ftp.get(gett)
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if err then print(err) end
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end
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-- determines the scheme
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function getscheme(url)
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function getscheme(u)
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-- this is an heuristic to solve a common invalid url poblem
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if not string.find(url, "//") then url = "//" .. url end
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local parsed = socket.url.parse(url, {scheme = "http"})
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if not string.find(u, "//") then u = "//" .. u end
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local parsed = url.parse(u, {scheme = "http"})
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return parsed.scheme
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end
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-- gets a file either by http or ftp, saving as <name>
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function get(url, name)
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function get(u, name)
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local fout = name and io.open(name, "wb")
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local scheme = getscheme(url)
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if scheme == "ftp" then getbyftp(url, fout)
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elseif scheme == "http" then getbyhttp(url, fout)
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local scheme = getscheme(u)
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if scheme == "ftp" then getbyftp(u, fout)
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elseif scheme == "http" then getbyhttp(u, fout)
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else print("unknown scheme" .. scheme) end
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end
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-- main program
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arg = arg or {}
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if table.getn(arg) < 1 then
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io.write("Usage:\n luasocket get.lua <remote-url> [<local-file>]\n")
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io.write("Usage:\n lua get.lua <remote-url> [<local-file>]\n")
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os.exit(1)
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else get(arg[1], arg[2]) end
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