Go (golang) LaTeX server

This is a server that compiles a LaTeX formula and produces a PNG image using the standard LaTeX toolchain and ImageMagick's convert.

A public version is available at https://menteslibres.net/api/latex

Installing

Requisites

Make sure you have the standard LaTeX toolchain and ImageMagick's convert installed in your system, the server expects these commands to be available: latex, dvips, convert.

Getting and compiling the source

Use go get to pull the package:

go get menteslibres.net/api/latex

Install the command line tool (the actual server) to $GOPATH/bin:

go install menteslibres.net/api/latex/cmd/go-latex-server

And start the server

go-latex-server run

Options for go-latex-server run:

-l="0.0.0.0": Bind to this IP.
-p=9193: Listen on this port.
-r="/api/latex/images": Prefix for generated PNG files (i.e: a Content Delivery Network)
-s="": Socket path.
-t="standalone": Service type ('standalone' or 'fastcgi').

Setup example

This line will start a FastCGI server listening on 127.0.0.1:9096 and will prepend a CDN's URL (https://ddori5d5np0fr.cloudfront.net/) to the resulting image:

go-latex-server -t fastcgi -l 127.0.0.1 -p 9096 -r https://ddori5d5np0fr.cloudfront.net/ run &

This is a configuration snippet for nginx. This example assumes that we are going to serve the API on http://example.org/api/latex and to use a CDN to serve images.

server {
  # Image server. A CDN may proxy to here.
  server_name direct-images.example.org;
  root /var/www/latex-server/images/;
}

server {
  server_name example.org;

  # FastCGI server
  location ~ ^/api/latex/(.+)$ {
    fastcgi_pass   127.0.0.1:9096;
    include        fastcgi_params;
  }
}

Documentation

Please look at http://godoc.org/menteslibres.net/api/latex for the actual renderer docs.

If you want to test it live see https://menteslibres.net/api/latex.

License

Copyright (c) 2013 José Carlos Nieto, https://menteslibres.org/xiam

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.