I am a new learner of this language
And I want to know how to get specific text from any website without opening it.
without installing any new libraries
I want to be able to get specific data text from a website using the library that already has it.
Hello! You are mentioning androlua, in case it's something that I created, please be aware that it's a proof of concept and I haven't updated it in years (and don't plan to), just to set expectations straight.
There's no built-in way to retrieve content of web pages in Lua. For that, you usually need a library with http support [1] like luasocket, or something based around curl [2]. You mention that you are a new learner of Lua, but in case you're curious, with AndroLua you can make use of the LuaJava interop to gain access to the Java HTTP client [3].
So what to do to get such text from website
If you are scraping a website, be aware that you are downloading the HTML content, and you need a way to extract the content you are looking for.
Lua has support for patterns (not full regex) [4], but parsing HTML gets "interesting" really fast [5], so you'd want to make use of a specialized HTML parsing library (e.g. [6]). Adding extra libraries to AndroLua is left as an exercise to the reader.
