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Mikubot/plugins/url_title.lua

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do
function getTitle(page)
local s = page
-- Remove optional spaces from the tags.
s = string.gsub(s, "\n", " ")
s = string.gsub(s, " *< *", "<")
s = string.gsub(s, " *> *", ">")
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s = string.gsub(s, "&#124;", "|")
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s = string.gsub(s, "&#8249;", "")
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s = string.gsub(s, "&lt;", "<")
s = string.gsub(s, "&gt;", ">")
s = string.gsub(s, "&amp;", "&")
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s = string.gsub(s, "&#39;", "'")
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s = string.gsub(s, "&ndash;", "")
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s = string.gsub(s, "&raquo;", "»")
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s = string.gsub(s, "&#8220;", "")
s = string.gsub(s, "&#8221;", "")
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s = string.gsub(s, "&auml;", "ä")
s = string.gsub(s, "&Auml;", "Ä")
s = string.gsub(s, "&ouml;", "ö")
s = string.gsub(s, "&Ouml;", "Ö")
s = string.gsub(s, "&uuml;", "ü")
s = string.gsub(s, "&Uuml;", "Ü")
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-- Put all the tags in lowercase.
s = string.gsub(s, "(<[^ >]+)", string.lower)
local i, f, t = string.find(s, "<title>(.+)</title>")
return t or ""
end
function string.ends(str, fin)
return fin=='' or string.sub(str,-string.len(fin)) == fin
end
function run(msg, matches)
local url = matches[1]
if string.ends(url, ".jpg") or string.ends(url, ".gif") or string.ends(url, ".png") then
return
end
local result = http.request(url)
local title = getTitle(result)
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--Ignoring 301, 302, 404 and more
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if title == "301 Moved Permanently" or
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title == "" or
title == "404 Not Found" or
title == "302 Found" or
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title == "302 Moved" or
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title == "Moved Permanently" or
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title == "Redirection" or
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title == "Object moved" or
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string.match(title, "on Steam") or
string.match(title, "521: Web server is down") or
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string.match(title, "eBay</title>") or
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string.match(msg.text, "twitch.tv") or
string.match(msg.text, "steamcommunity.com/app/") or
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string.match(msg.text, "deviantart.com") or
string.match(msg.text, "urbanup.com/") or
string.match(msg.text, "urbandictionary.com/define.php") then
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print('Ungültig, da "'..title..'"')
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else
return title
end
end
return {
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description = "Postet den URL-Titel",
usage = {""},
patterns = {"^(https?://[%w-_%.%?%.:,/%+=&#!]+)$"},
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run = run
}
end