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    s23
    3,186Articles
    
    sub StoreISBN {
      my ($num) = @_;
    
      return &StoreRaw(&ISBNLink($num));
    }
     
    sub ISBNALink {
      my ($num, $pre, $post, $text) = @_;
    
      return '<a href="' . $pre . $num . $post . '">' . $text . '</a>';
    }
     
    sub ISBNLink {
      my ($rawnum) = @_;
      my ($rawprint, $html, $num, $numSites, $i);
    
      $num = $rawnum;
      $rawprint = $rawnum;
      $rawprint =~ s/ +$//;
      $num =~ s/[- ]//g;   
      $numSites = scalar @IsbnNames;  # Number of entries
      if ((length($num) != 10) || ($numSites < 1)) {
        return "ISBN $rawnum";
      }
      $html = &ISBNALink($num, $IsbnPre[0], $IsbnPost[0], 'ISBN ' . $rawprint);
      if ($numSites > 1) {
        $html .= ' (';
        $i = 1;
        while ($i < $numSites) {
          $html .= &ISBNALink($num, $IsbnPre[$i], $IsbnPost[$i], $IsbnNames[$i]);
          if ($i < ($numSites - 1)) {  # Not the last site
            $html .= ', ';
          }
          $i++;
        }
        $html .= ')';
      }
      $html .= " "  if ($rawnum =~ / $/);  # Add space if old ISBN had space.
      return $html;
    }
    


    <- Das ist der Teil aus wiki.pl der die ISBN Links erzeugt. Die Aufgabe wΣre nun eine neue Funktion 'ASIN Link' ,da die ASIN zwar auch immer 10-stellig is ,aber neben "rawnumbers" auch Buchstaben enthalten kann.

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