eja

a micro web server written in C and Lua that can serve dynamic content.

INSTALLING

If you are running any recent Debian or derivative it should be enough to run:

sudo apt-get install eja

If luarocks is available:

sudo luarocks install eja

Othewise:

git clone https://github.com/ubaldus/eja.git
cd eja
make
sudo make install

USAGE

The simplest way to use it would be:

eja --web-start 

this would serve the files contained in /var/eja/web on port 35248, thus if the file /var/eja/web/index.html exists its content would be available on your browser at http://localhost:35248/ .

If the file ends in .eja (index.eja) its content is generated dynamic:

web=...
web.data="Hello World!"
return web

or a little more complex with a file named sum.eja:

web=...
local a=ejaNumber(web.opt.a)
local b=ejaNumber(web.opt.b)
web.data=ejaSprintf("The sum is %d",a+b)
return web

in this case opening the url http://localhost:35248/sum.eja?a=3&b=4 would return

The sum is 7

SYNTAX

Apart from being able to execute plain text Lua scripts, eja has also its own special syntax, for this reason any file ending in .eja must be either a portable eja bytecode (--export) or must follow the below rules:

lua	eja
and	&&
or	||
not	!
x=x+1	x+=1
x=x-1	x-=1
x=x*1	x*=1
x=x/1	x/=1

also () are mandatory and {} are used to replace then, do, end using the following syntax:

function sum(a,b) { return a+b; }

if (x==1) { print("one"); } elseif (x==2) { print("two"); } else { print("neither one nor two..."); }

for (i=1,10) { print(i); }

for (k,v in next,{1,2,3}) { print(k,v); }

i=0; while(i<10) { i+=1; print(i); }

i=0; repeat { i+=1; print(i); } until (i>=10);