How can I get a text from a website to LUA

N3xT · September 25, 2016

Hello guys, hope u are fine

today I have a little problem, how I can get a text from website to Lua, That's all

L3KZ!K4 · September 25, 2016

fetchRemote

Due the fact this an website, you'll need to filter the information you want. Of course to get a text remotely you should use an API, to get only the information you need.

N3xT · September 25, 2016

6 hours ago, L3KZ!K4 said:
fetchRemote
Due the fact this an website, you'll need to filter the information you want. Of course to get a text remotely you should use an API, to get only the information you need.

I don't know a lot about websites so, How I can filter the results? can I get the text without API?.

Mr.Loki · September 26, 2016

12 hours ago, N3xT said:

Hello guys, hope u are fine

today I have a little problem, how I can get a text from website to Lua, That's all

what site and what text on the site are you trying to get?

N3xT · September 26, 2016

1 minute ago, loki2143 said:

what site and what text on the site are you trying to get?

Private site.

Mr.Loki · September 26, 2016

Just now, N3xT said:

Private site.

ah ok, well i can't help ya there lol

Dealman · September 26, 2016

Well, if it's using XHTML you can use the regular XML functions to parse through it and find what you need. Using PHP should work for you as well but I haven't really touched any PHP yet so I'm rather inexperienced with that.

N3xT · September 26, 2016

30 minutes ago, Dealman said:

Well, if it's using XHTML you can use the regular XML functions to parse through it and find what you need. Using PHP should work for you as well but I haven't really touched any PHP yet so I'm rather inexperienced with that.

Yes, I'm using XHTML, but my question how can I do it? I know about " regular XML functions ", but how to search for it after connect?

Dealman · September 26, 2016

Use fetchRemote to save it as text, you then pass this onto the client to read through it using the XML functions(unless you need to do it on the server). To see how things are structured, right-click your own page and save as.

I was working on a resource before which would fetch internet radios from internet-radio.com and parse through them for easy streaming. Here's a snippet of the code to see how I parsed through it;

for nodeIndex, theNode in ipairs(stationNodes) do
	if(xmlNodeGetName(theNode) == "tr") then
		if(nodeIndex <= #stationNodes-1) then
			local stationInfo = xmlNodeGetChildren(theNode);
			for nodeIndex, theNode in ipairs(stationInfo) do	
				if(xmlNodeGetName(theNode) == "td") then
					if(nodeIndex == 1) then -- Parse URL
						local urlNode = xmlFindChild(theNode, "a", 0);
						local onclickAttribute = xmlNodeGetAttribute(urlNode, "onclick")
						local findURL = string.match(onclickAttribute, "http?://[%w-_%.%?%.:/%+=&]+");
						--outputChatBox("Debug URL: ["..tostring(findURL).."]");
						table.insert(g_RadioStations_URL, #g_RadioStations_URL, findURL);
					elseif(nodeIndex == 2) then -- Parse Name
						local nameNode = (xmlFindChild(theNode, "span", 0) or xmlFindChild(theNode, "a", 0));
						if(theName ~= false) then
							local theName = xmlNodeGetValue(nameNode);
							local theNameFix = string.gsub(theName, "[\n+]", "");
							local theNameFix = string.gsub(theName, "&amp;", "");
							--outputChatBox("Debug Name: ["..tostring(theNameFix).."]");
							table.insert(g_RadioStations_Name, #g_RadioStations_Name, theNameFix);
						end
					elseif(nodeIndex == 3) then -- Parse Bitrate
						local bitRateRaw = xmlNodeGetValue(theNode);
						local bitRateFix = string.gsub(bitRateRaw, "[\n+]", "");
						--outputChatBox("Debug Bitrate: ["..tostring(bitRateFix).."]");
						table.insert(g_RadioStations_Bitrate, #g_RadioStations_Bitrate, bitRateFix);
					end
				end
			end
		end
	end
end

N3xT · September 27, 2016

Nothing happen.

<body>
	<td class="sourceName">Tn6eL</td>
</body>

addCommandHandler("getSourceName",
function (p)
	local fileName = "sourceCode.xml"
	local xmlFile = xmlLoadFile(fileName)
	if xmlFile then
		local songName = xmlNodeGetChildren(xmlFile);
		for i,node in ipairs(songName) do
			local nameNode = xmlFindChild(node, "sourceName", 0))
			outputChatBox(xmlNodeGetValue(nameNode),p)
        end
		xmlUnloadFile(xmlFile) 
	end
end	)

Dealman · September 27, 2016

You should read up on XML a bit, you're confusing the child, attribute and value. In this particular scenario;
<td class="sourceName">Tn6e</td>

Red is the child, green is an attribute and blue is the value. So in order to get the value, you'd have to use this code;

addCommandHandler("getSourceName",
function (p)
	local fileName = "sourceCode.xml"
	local xmlFile = xmlLoadFile(fileName)
	if xmlFile then
		local findNode = xmlFindChild(xmlFile, "td", 0)
		if(findNode) then
			outputChatBox(tostring(xmlNodeGetValue(findNode, "class")), p)
		end
		xmlUnloadFile(xmlFile) 
	end
end)

Edited September 27, 2016 by Dealman

N3xT · September 27, 2016

1 hour ago, Dealman said:
You should read up on XML a bit, you're confusing the child, attribute and value. In this particular scenario;
<td class="sourceName">Tn6e</td>

Red is the child, green is an attribute and blue is the value. So in order to get the value, you'd have to use this code;
addCommandHandler("getSourceName",
function (p)
	local fileName = "sourceCode.xml"
	local xmlFile = xmlLoadFile(fileName)
	if xmlFile then
		local findNode = xmlFindChild(xmlFile, "td", 0)
		if(findNode) then
			outputChatBox(tostring(xmlNodeGetValue(findNode, "class")), p)
		end
		xmlUnloadFile(xmlFile) 
	end
end)

Doesn't work, can't find child

Dealman · September 27, 2016

It should work if your XML file looks like you showed above;

<body>
	<td class="sourceName">Tn6eL</td>
</body>

If not, the error is elsewhere in your code - use debugscript.

Edited September 27, 2016 by Dealman

N3xT · September 27, 2016

4 minutes ago, Dealman said:
It should work if your XML file looks like you showed above;
<body>
	<td class="sourceName">Tn6eL</td>
</body>
If not, the error is elsewhere in your code - use debugscript.

No errors, my XML file have a lot of lines else that I reply, maybe that is the problem?

Dealman · September 27, 2016

Yes, use xmlNodeGetChildren to loop through them. Use xmlNodeGetAttribute to check if the attribute equals "sourceName". If true, use xmlNodeGetValue to get the value.

N3xT · September 27, 2016

9 minutes ago, Dealman said:

Yes, use xmlNodeGetChildren to loop through them. Use xmlNodeGetAttribute to check if the attribute equals "sourceName". If true, use xmlNodeGetValue to get the value.

addCommandHandler("getSourceName",
function (p)
	local fileName = "sourceCode.xml"
	local xmlFile = xmlLoadFile(fileName)
	if xmlFile then
		local songName = xmlNodeGetChildren(xmlFile)
		for i,node in ipairs(songName) do
			if ( xmlNodeGetName(node) == "td" ) then
				local nodeName = xmlNodeGetAttribute(node, "sourceName") 
				if nodeName == false then
					outputChatBox(xmlNodeGetValue(nodeName),p)
				end
			end
        end
		xmlUnloadFile(xmlFile) 
	end
end	)

Doesn't work again xd.

Dealman · September 27, 2016

Kind of hard to help you when I don't know how the file's structured. You'll just have to do a bit of trial and error, use outputChatBox to debug, see what values you are getting - use that to try and pin-point where in the file you are. Remember that children can have children and so on, XML is like navigating in a spider-web or finding a needle in a haystack sometimes

How can I get a text from a website to LUA

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