= Wiki Processors = Processors are WikiMacros designed to provide alternative markup formats for the [TracWiki Wiki engine]. Processors can be thought of as ”macro functions to process user-edited text”. The Wiki engine uses processors to allow using [wiki:WikiRestructuredText Restructured Text], [wiki:WikiHtml raw HTML] and [http://www.textism.com/tools/textile/ textile] in any Wiki text throughout Trac. == Using Processors == To use a processor on a block of text, use a Wiki code block, selecting a processor by name using ”shebang notation” (#!), familiar to most UNIX users from scripts. ”’Example 1”’ (”inserting raw HTML in a wiki text”): {{{ #!html 
{{{
#!html
<h1 style="color: orange">This is raw HTML</h1>
}}}
}}} ”’Results in:”’ {{{ #!html

This is raw HTML

}}} Note that since 0.11, such blocks of HTML have to be self-contained, i.e. you can’t start an HTML element in one block and close it later in a second block. Use div or span processors for achieving similar effect (see WikiHtml). —- ”’Example 2”’ (”inserting Restructured Text in wiki text”): {{{ #!html 
{{{
#!rst
A header
--------
This is some **text** with a footnote [*]_.
.. [*] This is the footnote.
}}}
}}} ”’Results in:”’ {{{ #!rst A header ——– This is some **text** with a footnote [*]_. .. [*] This is the footnote. }}} —- ”’Example 3”’ (”inserting a block of C source code in wiki text”): {{{ #!html 
{{{
#!c
int main(int argc, char *argv[])
{
  printf("Hello Worldn");
  return 0;
}
}}}
}}} ”’Results in:”’ {{{ #!c int main(int argc, char *argv[]) { printf(“Hello Worldn”); return 0; } }}} —- == Available Processors == The following processors are included in the Trac distribution: * ”’html”’ — Insert custom HTML in a wiki page. See WikiHtml. * ”’div”’ — Wrap an arbitrary Wiki content in a
element (”since 0.11”). See WikiHtml. * ”’span”’ — Wrap an arbitrary Wiki content in a element (”since 0.11”). See also WikiHtml. * ”’rst”’ — Trac support for Restructured Text. See WikiRestructuredText. * ”’textile”’ — Supported if [http://cheeseshop.python.org/pypi/textile Textile] is installed. See [http://www.textism.com/tools/textile/ a Textile reference]. * ”’comment”’ — Do not process the text in this section (i.e. contents exist only in the plain text – not in the rendered page). === Code Highlighting Support === Trac includes processors to provide inline [wiki:TracSyntaxColoring syntax highlighting] for the following languages: * ”’c”’ — C * ”’cpp”’ — C++ * ”’python”’ — Python * ”’perl”’ — Perl * ”’ruby”’ — Ruby * ”’php”’ — PHP * ”’asp”’ — ASP * ”’java”’ — Java * ”’js”’ — Javascript * ”’sql”’ — SQL * ”’xml”’ — XML * ”’sh”’ — Bourne/Bash shell ”’Note:”’ ”Trac relies on external software packages for syntax coloring. See TracSyntaxColoring for more info.” By using the MIME type as processor, it is possible to syntax-highlight the same languages that are supported when browsing source code. For example, you can write: {{{ {{{ #!text/html

text

}}} }}} The result will be syntax highlighted HTML code: {{{ #!text/html

text

}}} The same is valid for all other mime types supported. For more processor macros developed and/or contributed by users, visit: * [trac:ProcessorBazaar] * [trac:MacroBazaar] * [th:WikiStart Trac Hacks] community site == Advanced Topics: Developing Processor Macros == Developing processors is no different from Wiki macros. In fact they work the same way, only the usage syntax differs. See WikiMacros for more information. —- See also: WikiMacros, WikiHtml, WikiRestructuredText, TracSyntaxColoring, WikiFormatting, TracGuide