Lua web browser

02.03.2021 By Gojinn

A Lua Script is essentially a Lua program that creates the whole contents of a web page and returns it to the client. Those tags are processed by CGILua and resulting page is returned to the client. Lua Scripts and Lua Pages are equally easy to use, and choosing one of them basically depends on the characteristics of the resulting page.

While Lua Pages are more convenient for the separation of logic and format, Lua Scripts are more adequate for creating pages that are simpler in terms of its structure, but require a more significative amount of internal processing. Allowing these two methods to be intermixed, CGILua provides Web applications developers with great flexibility when both requirements are present. For a detailed description of both scripting methods and some examples of their use see Lua Scripts and Lua Pages.

CGILua architecture is divided in two layers. This way any Lua Script or Lua Page can be used by any launcher. The CGILua request life cycle consists in the following sequence of steps for each request:.

Editing the config. One typical use would be registering the open and close functions in order to change the request processing behavior.

With this customization it is possible to implement new features like session management and private library directories as shown in section Configurationor even to implement new abstractions over the whole CGILua way of live, like MVC-frameworks such as Orbit.

lua web browser

CGILua follows the package model for Lua 5. This file can be used to alter the default CGILua behaviour and is located in the Kepler configuration directory. In particular, the opening and closing functions are useful for different things.

Some examples of the use of such functions in config. Previous versions of CGILua loaded a env. To emulate this with CGILua 5.

Note that the function cgilua. When some scripts may use the library but others may not, you could define an "enabling" function which should be called at the very beginning of each script that needs to use sessions :. Sometimes you need to configure a private libraries directory for each application hosted in the server. This configuration allows the function require to find packages installed in the private directory and in the system directory but not in other application's private directory.

To implement this you could do:. Lua Scripts are text files containing valid Lua code. This style of usage adopts a more "raw" form of web programming, where a program is responsible for the entire generation of the resulting page. Lua Scripts have a default. CGILua offers some functions to ease these tasks, such as cgilua. It should be noted that the above example generates a "fixed" page: even though the page is generated at execution time there is no "variable" information. That means that the very same document could be generated directly with a simple static HTML file.

However, Lua Scripts become especially useful when the document contains information which is not known beforehand or changes according to passed parameters, and it is necessary to generate a "dynamic" page.

Esp8266 Web Control (with Nodemcu and Lua)

Another easy example can be shown, this time using a Lua control structure, variables, and the concatenation operator:. In the above example the use of cgilua. If you were using a form, the parameter would be available in cgilua. CGILua does not process the text itself but look for some special markups that include Lua code into the file.

After all those markups are processed and merged with the template file, the results are sent to the client.

lua web browser

Lua Pages have a default.Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. It is very confusing to start working with ESP just by googling. It took me three days to understand that there are two types of firmwares and one uploader do not work with other.

I have not worked with Espressif firmware as i found Nodemcu Lua easy for my requirements. So, first you are required to add an firmware operating system to the ESP Then you can start with coding. Now open the "ESPFlasher. Goto advanced tab change the baud rate to ,Flash size 1Mb depending on your module.

Goto congif and select the bin file downloaded from the link received in your meail. Instead of a different power supply the CP also can be used. Question 2 years ago. Question 2 years ago on Step 4.

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It is very useful tutorial. I have a question. I update firmware my esp module successfully and I upload your code as init.

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Everything seems good. I can login web page on esp module and I click on button then there is no action on relay module. I tired to other relay module also I used to led then but it was same. Do I have to use mosquito services while using this web control.

Do you have any advice for troubleshooting to solve my problem? I have used the Nodemcu firmware and Lua uploader to upload the program. Add Teacher Note. Download firmware from the following link. Select branch to build from: select "dev" Select modules to include: go with the defaults or select some more. Click on "Start your build" It will take 5 minutes to 15 minutes. Open LuaUploader. Change the file name to "init. Copy paste the code in attachment.

Attachments ESP web control. Thank you for reading. Did you make this project? Share it with us! I Made It! Embed Tinkercad Designs in Instructables by bekathwia in Websites. VarinderM Question 2 years ago.

Answer Upvote. CenkB3 Question 2 years ago on Step 4.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. This must be so basic that I couldn't find an answer.

Or can I? If you want it to run in the browser, then you need support for the language built into the browser or provided by an extension. The simplest way to achieve this is via CGI. How you configure your server to run programs using CGI depends on the server. Apache has a guide for their server.

There are probably CGI libraries for Lua, but I don't know the language so cannot make any recommendations. CGI is a slow and inefficient protocol as it requires a new processes to be spawned for each request. There are alternatives, such as FastCGI and various language specific options. Again, I don't know what is considered optimal in Lua land.

Fengari and Moonshine execute compiled Lua bytecode. They are more compatible than lua. I'd try using Fengari first as it seems to be most active. Most of the CGI and Lua I have played with involve generating the web page and inserting the dynamic bits, rather than calling a script from a web page. So more like option C from your original question. Any HTML 4 or 5 elements you want to have could easily be added into the generated web page. This long forum page has some good examples with code and output.

Chapter 15 - Programming for the Web. While some of these places are a bit dated, they still do a good job of showing how to do this sort of thing. Remember: If you are using cgi or fastcgi on the server side you will need the first line of your Lua file to have a pointer to wherever the Lua interpreter is, such as:. There are also several JavaScript implementations of Lua, but they were not mature enough last time I looked. If you want to run Lua on server, consult this answer: What web server to use for Lua web development.

Learn more. Asked 8 years, 10 months ago. Active 1 year ago. Viewed 13k times. I want to create web pages with dynamic content Sorry for such remedial questions, but all help is greatly appreciated. Billy Pilgrim Billy Pilgrim 1, 3 3 gold badges 19 19 silver badges 30 30 bronze badges. Active Oldest Votes. On the WWW scripts can run in two places. In the web browser On the web server If you want it to run in the browser, then you need support for the language built into the browser or provided by an extension.

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Quentin Quentin k 87 87 gold badges silver badges bronze badges. Has lower compatibility but lower footprint too. Janus Troelsen Janus Troelsen By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am writing a VLC extension in which i would like to open some url in a web browser in lua of course. So far, I have not been able to find any relevant code for opening the web browser from a lua script. Is there any way in which I can perform this task say for example a google search of the file playing?

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I am able to create a link to the url using a dialog box, but i would like to skip this step and make it open without any user input. I am a beginner to lua and to making VLC extentions just started a few days back and have been trying things out since then.

It works by first checking Lua's package. That should only leave us with OSes that support uname. Learn more. Asked 7 years, 9 months ago. Active 6 years, 7 months ago. Viewed 3k times. It depends on the operative system. I'm guessing you would have to a detect the operative system host and b execute an os-specific command via the command line. You might be able to do b with the os. I have no idea how to do a from vlc though.

Active Oldest Votes. Obviously, this is somewhat less than exhaustive. I can not test. Textmode Textmode 3 3 silver badges 17 17 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.This is an article in a series of unknown length discussing a tool written in Lua to publish posts on a WordPress blog from a PC. The source code is available in a public fossil repository. In this installment we will implement a minimal web server that we can use to collect the OAuth token credentials directly rather than depending on the user to copy and paste information manually from their web browser to our command line.

But if a simple web server were available, the registered URL could point to the local host and that server could be used to collect the token without further user interaction. In order to do this, the primary missing piece is a simple web server that can be depended on to capture the URL and serve up a limited number of page requests. Note that there is one minor complication: the port number on which we run a server is formally part of the URL known to WP as part of the application registration.

To mitigate this a little bit, the scenario as shown uses portwhich is a well-known port for transient or local web servers. If that port were already in use, the scenario should error out at about step 2.

A lot of convention and extension has happened since it was first proposed in the early s but the bits we need to deal with for this application are still very simple.

I have left out a lot of details that are important for high-performance servers here. This server need not be high performance, and will continue to ignore all of those features. Since that module is already included in Lua for Windows, that is simple to do. LuaSocket provides the means to create a socket, accept a connection, and transfer data. We still need to use those features to implement HTTP. However a little bit of searching turned up an experimental server written in Lua with LuaSocket called Ladle.

Since it is already licensed under the same license as Lua itself and the WPCLI tools, there are no legal issues with it either. The rename also seemed apt because as I worked through it, I found I was changing it fairly substantially.

So Spoon is based on Ladle, but is evolving to be quite different from Ladle. Each individual component of a web page is fetched by a simple transaction. The server uses the URI, including its full path name and any query parameters and form content for POST to decide what to return as its response. A full web server will usually map requests to files in its file system.

Spoon leaves that detail up to its caller. This version of Spoon will ignore all headers from the request and any POST data and provide the bare minimum headers in its reply. Future versions could be enhanced to be smarter, but this is sufficient for the immediate need.I like Lua very much, and in my mind, if the stars had been aligned just a little differently, it would now occupy the space inhabited by Javascript. A Lua to Javascript compiler would have made sense. Given all the languages you can compile to Javascript these days, it would have made sense.

And in terms of semantics, both languages are close enough that I think it would not be that big a problem. Still, it is an impressive piece of work. Implementing a bytecode VM a in Javascript, b running in the browser must make debugging rather You can just take the original Lua interpreter source code and compile that to asm. Loading dependencies from the web requires an asynchronous reimplementation of the "require" command though, but it's all quite trivial.

The result is about to KByte compressed. The only downside beside the added size is that the Lua code is still running interpreted, not JITed. I have tested Lua compiled to asmjs and it is very very fast. Either one would meet all of my perf needs. Lua really is the MLIR mid-level intermediate representation from the future. Plus the codegen was for a bytecode I came up with in JS but which has evolved quite a bit since getting everything in place to happen in WASM.

This is super cool. It looks like you are in the process of porting the.

lua web browser

Wasm will exist in many more places than Js will. I think I would have started with many of the Lua on Js implementations and used zero Js. Collapsing Towers of Interpreters. Yes: at the end there should only be the light rt. Currently rt. Fengari gzipped and minified is about 75kb.The following is a list of web browsers that are notable. This is a table of personal computer web browsers by year of release of major version. The increased growth of the Internet in the s and s means that current browsers with small market shares have more total users than the entire market early on.

Other software publishers have built browsers and other products around Microsoft's Trident engine. The following browsers are all based on that rendering engine:. Browsers that use both Trident and Gecko include:. Browsers that can use TridentGecko and Blink include:. Mosaic was the first widely used web browser.

The best known are the first versions of Internet Explorer and Netscape. The most popular mobile browsers as of June are: [32]. From Wikipedia, the free encyclopedia. Wikimedia list article. See also: Timeline of web browsers. See also: Augmented browsingList of augmented browsing softwareand Site-specific browser. Main article: Mobile browser. Main article: Text-based web browser. Internet World Stats.

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