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Parsers

Parsers go through the contents of a page to create a sequence of formatter calls which in sequence create some readable output. MoinMoin will choose the parser for a page using different techniques: FORMAT Processing Instruction (see HelpOnProcessingInstructions) and code display regions (see HelpOnFormatting).

A #FORMAT pi can be used to tell MoinMoin which parser to use for the whole page content. By default this is the wiki parser. Example:

#FORMAT cplusplus 
... some C++ source ...

With the use of code display regions, a parser can be applied to only a part of a page (this was a processor region in earlier versions of Moin). You specify which parser to call by using a bang path-like construct in the first line. A bang path is a concept known from Unix command line scripts, where they serve the exact same purpose: the first line tells the shell what program to start to process the remaining lines of the script. Example:

{ { {#!CSV
a,b,c
d,e,f
} } }

For more information on the possible markup, see HelpOnEditing.

ParserBase

ParserBase is a parser utility class used to produce colorized source displays. It is easily extended. The HTML Formatter will render such code displays with switchable linenumbers, if the browser supports DOM and JavaScript.

A ParserBase colorization parser understands the following arguments to a #FORMAT pi or a hashbang line. Just add those arguments after the name of the parser (#FORMAT python start=10 step=10 numbering=on or #!python numbering=off).

numbering

if line numbering should be added. defaults to 'on'. possible values: 'on', 'off' (no linenumbers, but javascript to add them), 'disable' (no line numbers at all)

start

where to start with numbering. defaults to 1

step

increment to the linenumber. defaults to 1

MoinMoin comes with a few examples from which you can go on:

cplusplus

   1 int main(int argc, char **argv) {
   2   return 0;
   3 }

java

   1 import java.util.Date;
   2 import java.util.Calendar;
   3 
   4 public class IntDate
   5 {
   6   public static Date getDate(String year, String month, String day)
   7     {
   8       // Date(int, int, int) has been deprecated, so use Calendar to
   9       // set the year, month, and day.
  10       Calendar c = Calendar.getInstance();
  11       // Convert each argument to int.
  12       c.set(Integer.parseInt(year),Integer.parseInt(month),Integer.parseInt(day));
  13       return c.getTime();
  14     }
  15 }

pascal

   1 function TRegEx.Match(const s:string):boolean;
   2 var
   3     l,i : integer;
   4 begin
   5     result := MatchPos(s,l,i);
   6 end;

python

Colorizes python code. It is not derived from ParserBasem, but it allows the same arguments as the ParserBase parsers.

   1 def hello():
   2     print "Hello World!"

IRC

Puts an IRC log into a table.

CSV

The CSV parser works on so-called comma separated values, though the comma is now usually a semicolon. The first line is considered to contain column titles that are rendered in bold, so when you don't want table headers, leave the first line empty.

The bang path can contain "-index" arguments, to hide certain columns from the output; column indices are counted starting from 1.

Any other argument is treated as the seperator. This allows you to use e.g. commas (,) instead of semicolons (;). If you do not supply a separator, ; will be used. See the examples below.

• The current code contains a very simple CSV parser.

MoinMoin 1.3 - clipping of the patch history:

MoinMoin Version History:

reStructuredText

See /ReStructuredText

XML/XSLT/DocBook

See HelpOnXmlPages.