mirror of
https://github.com/lunarmodules/luasocket.git
synced 2025-10-31 10:25:55 +01:00
100 lines
2.8 KiB
Lua
100 lines
2.8 KiB
Lua
dofile("../lua/http.lua")
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HTTP.TIMEOUT = 10
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dofile("../lua/code.lua")
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dofile("../lua/url.lua")
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dofile("../lua/concat.lua")
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cache = {}
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function readfile(path)
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path = Code.unescape(path)
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local file, error = openfile(path, "r")
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if file then
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local body = read(file, "*a")
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closefile(file)
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return body
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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 = URL.parse_url(url, { scheme = "file" })
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if cache[url] then return cache[url].res end
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local res
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if parsed.scheme == "http" then
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local request = { url = url }
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local response = { body_cb = function(chunk, err)
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return nil
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end }
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local blocksize = HTTP.BLOCKSIZE
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HTTP.BLOCKSIZE = 1
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response = HTTP.request_cb(request, response)
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HTTP.BLOCKSIZE = blocksize
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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 = openfile(Code.unescape(parsed.path), "r")
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if file then
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closefile(file)
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res = nil
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else res = error end
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else res = format("unhandled scheme '%s'", parsed.scheme) end
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cache[url] = { res = 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 = URL.parse_url(url, { scheme = "file" })
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local base, body, error
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base = url
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if parsed.scheme == "http" then
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local response = HTTP.request{url = url}
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if response.code ~= 200 then
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error = response.status or response.error
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else
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base = response.headers.location or url
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body = response.body
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end
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elseif parsed.scheme == "file" then
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body, error = readfile(parsed.path)
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else error = format("unhandled scheme '%s'", parsed.scheme) end
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return base, body, error
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end
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function getlinks(body, base)
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-- get rid of comments
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body = gsub(body, "%<%!%-%-.-%-%-%>", "")
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local links = {}
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-- extract links
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gsub(body, '[Hh][Rr][Ee][Ff]%s*=%s*"([^"]*)"', function(href)
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tinsert(%links, URL.absolute_url(%base, href))
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end)
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gsub(body, "[Hh][Rr][Ee][Ff]%s*=%s*'([^']*)'", function(href)
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tinsert(%links, URL.absolute_url(%base, href))
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end)
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gsub(body, "[Hh][Rr][Ee][Ff]%s*=%s*(%a+)", function(href)
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tinsert(%links, URL.absolute_url(%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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if not body then print(error) return end
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local links = getlinks(body, base)
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for i = 1, getn(links) do
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write(_STDERR, "\t", links[i], "\n")
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local err = getstatus(links[i])
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if err then write(links[i], ": ", err, "\n") end
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end
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end
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arg = arg or {}
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if getn(arg) < 1 then
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write("Usage:\n luasocket -f check-links.lua {<url>}\n")
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exit()
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end
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for i = 1, getn(arg) do
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write("Checking ", arg[i], "\n")
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checklinks(URL.absolute_url("file:", arg[i]))
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end
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