Configuration with wsapi
========================

Here we give a simple example of apache2 configuration, where many lua 
scripts [2] or lua pages[3] are executed in response to URL of the form:

  http://server/app/script.lua
  http://server/app/page.lp

The following rather standard apache2 configuration snippet allows
scripts in /www to be executed as CGIs. Note that the app script will
be placed in DocumentRoot.

  <VirtualHost server>
          DocumentRoot /www/
          <Location />
                  SetHandler cgi-script
                  Options +ExecCGI
          </Location>
  </VirtualHost>

Then /www/app has to be something like the following lua snippet:

  #!/usr/bin/lua5.1
  require "wsapi.sapi"
  require "wsapi.cgi"
  CGILUA_CONF="/non-existent/"
  wsapi.cgi.run(wsapi.sapi.run)

The CGILUA_CONF can be se to a directory path that contains a file named
config.lua. For example you can define special handlers associated to 
particular file extensions (there are default ones for .lp and .lua files).
All configuration options are described in [4].

The following sample Lua page /www/app/page.lp prints all the parameters 
eventually passed to the page (e.g. page.lp?foo=bar).

  <html> <body> <dl>
  <? t = {} 
     cgilua.urlcode.parsequery(cgilua.servervariable("QUERY_STRING"),t)
     for key,val in pairs(t) do ?>
  	<dt><? =key ?></dt>
  	<dd><? =val ?></dd>
  <? end ?>
  </dl> </body> </html>

Lua scrips are equipotent to Lua pages, but are better suited for implementing
tasks rather then pages, since it is not allowed to mix HTML and Lua code. A
sample Lua script follows:

  cgilua.htmlheader()
  cgilua.print("<html><body>test</body></html>")


Reference
=========

[2]: file:///usr/share/doc/liblua5.1-cgi-dev/doc/us/manual.html#scripts
[3]: file:///usr/share/doc/liblua5.1-cgi-dev/doc/us/manual.html#templates
[4]: file:///usr/share/doc/liblua5.1-cgi-dev/doc/us/manual.html#config
