stats_ex.yaws

<erl>
out(A) -> file:read_file([A#arg.docroot, "/EXHEAD"]).
</erl>

<h2>Talking to the server</h2>

Since we are running in the same process as the webserver itself, it is
easy for us to interact with the webserver itself from a yaws script.
The following is an example which produces a statistics report
from the webserver. We call the server

The absoluteley most simple example is a HTML file which doesn't contain
any embedded erlang code at all.


<erl>
out(A) ->
  {ok, B} = file:read_file([A#arg.docroot, "/stats_ex1.yaws"]),
  {ok, ["<xmp> \n", B, "</xmp\n>"]}.
</erl>

<br>
Since the file has the suffix <tt>.yaws</tt>, the file will be processed
by the Yaws dynamic compiler, but since no embeddded erlang code is found,
the data from the file will be delivered untouched.
<br>

<h2> Hello world again </h2>

The file <a href="simple_ex2.yaws">simple_ex2.yaws</a> contains the following
HTML code.
<br>
<erl>
out(A) ->
  {ok, B} = file:read_file([A#arg.docroot, "/simple_ex2.yaws"]),
  {ok, ["<xmp> \n", B, "</xmp\n>"]}.
</erl>

The file has one very simple function which just returns a tuple
<tt>{ok, String} </tt>
<br>
The String will be substituted into the delivered HTML data instead of the
Erlang code.









</html>