mod/wiki/ewiki/plugins/markup/footnotes.php

   1 <?php
   2
   3  /*
   4
   5    this plugin introduces markup for footnotes, use it like:
   6
   7       ...
   8       some very scientific sentence {{this is a footnote explaination}}
   9       ...
  10
  11    this may be useful in some rare cases; usually one should create
  12    a WikiLink to explain a more complex task on another page;
  13    your decision
  14
  15 */
  16
  17
  18
  19 $ewiki_plugins["format_source"][] = "ewiki_format_source_footnotes";
  20
  21
  22
  23 function ewiki_format_source_footnotes (&$source) {
  24
  25    $notenum = 0;
  26
  27    $l = 0;
  28    while (
  29             ($l = strpos($source, "{{", $l))
  30         &&  ($r = strpos($source, "}}", $l))
  31          )
  32    {
  33       $l += 2;
  34
  35       #-- skip "{{...\n...}}"
  36       if (strpos($source, "\n", $l) < $r) {
  37          continue;
  38       }
  39
  40       $notenum++;
  41
  42       #-- extract "footnote"
  43       $footnote = substr($source, $l, $r - $l);
  44
  45       #-- strip "{{footnote}}"
  46       $source = substr($source, 0, $l - 2)
  47              . "<a href=\"#fn$notenum\">·$notenum</a>"
  48              . substr($source, $r + 2);
  49
  50       #-- add "footnote" to the end of the wiki page source
  51       if ($notenum==1) {
  52          $source .= "\n----";
  53       }
  54       $source .= "\n" .
  55                  "<a name=\"fn$notenum\">·$notenum</a> ". $footnote . "\n<br />";
  56
  57    }
  58 }
  59
  60
  61 ?>