tor-android/external/privoxy/doc/webserver/user-manual/templates.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
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>Privoxy's Template Files</TITLE
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><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="TEMPLATES"
>10. Privoxy's Template Files</A
></H1
><P
> All <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> built-in pages, i.e. error pages such as the
<A
HREF="http://show-the-404-error.page"
TARGET="_top"
><SPAN
CLASS="QUOTE"
>"404 - No Such Domain"</SPAN
>
error page</A
>, the <A
HREF="http://ads.bannerserver.example.com/nasty-ads/sponsor.html"
TARGET="_top"
><SPAN
CLASS="QUOTE"
>"BLOCKED"</SPAN
>
page</A
>
and all pages of its <A
HREF="http://config.privoxy.org/"
TARGET="_top"
>web-based
user interface</A
>, are generated from <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>templates</I
></SPAN
>.
(<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> must be running for the above links to work as
intended.)</P
><P
> These templates are stored in a subdirectory of the <A
HREF="config.html#CONFDIR"
>configuration
directory</A
> called <TT
CLASS="FILENAME"
>templates</TT
>. On Unixish platforms,
this is typically
<A
HREF="file:///etc/privoxy/templates/"
TARGET="_top"
><TT
CLASS="FILENAME"
>/etc/privoxy/templates/</TT
></A
>.</P
><P
> The templates are basically normal HTML files, but with place-holders (called symbols
or exports), which <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> fills at run time. It
is possible to edit the templates with a normal text editor, should you want
to customize them. (<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Not recommended for the casual
user</I
></SPAN
>). Should you create your own custom templates, you should use
the <TT
CLASS="FILENAME"
>config</TT
> setting <A
HREF="config.html#TEMPLDIR"
>templdir</A
>
to specify an alternate location, so your templates do not get overwritten
during upgrades.
</P
><P
> Note that just like in configuration files, lines starting
with <TT
CLASS="LITERAL"
>#</TT
> are ignored when the templates are filled in.</P
><P
> The place-holders are of the form <TT
CLASS="LITERAL"
>@name@</TT
>, and you will
find a list of available symbols, which vary from template to template,
in the comments at the start of each file. Note that these comments are not
always accurate, and that it's probably best to look at the existing HTML
code to find out which symbols are supported and what they are filled in with.</P
><P
> A special application of this substitution mechanism is to make whole
blocks of HTML code disappear when a specific symbol is set. We use this
for many purposes, one of them being to include the beta warning in all
our user interface (CGI) pages when <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
is in an alpha or beta development stage:</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>&#60;!-- @if-unstable-start --&#62;
... beta warning HTML code goes here ...
&#60;!-- if-unstable-end@ --&#62;</PRE
></TD
></TR
></TABLE
></P
><P
> If the "unstable" symbol is set, everything in between and including
<TT
CLASS="LITERAL"
>@if-unstable-start</TT
> and <TT
CLASS="LITERAL"
>if-unstable-end@</TT
>
will disappear, leaving nothing but an empty comment:</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>&#60;!-- --&#62;</PRE
></TD
></TR
></TABLE
></P
><P
> There's also an if-then-else construct and an <TT
CLASS="LITERAL"
>#include</TT
>
mechanism, but you'll sure find out if you are inclined to edit the
templates ;-)</P
><P
> All templates refer to a style located at
<A
HREF="http://config.privoxy.org/send-stylesheet"
TARGET="_top"
><TT
CLASS="LITERAL"
>http://config.privoxy.org/send-stylesheet</TT
></A
>.
This is, of course, locally served by <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
and the source for it can be found and edited in the
<TT
CLASS="FILENAME"
>cgi-style.css</TT
> template.</P
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