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<section id="regular-expressions">
<span id="id1"></span><h1>Reguliere expressies<a class="headerlink" href="#regular-expressions" title="Link to this heading">¶</a></h1>
<p><a class="reference external" href="https://en.wikipedia.org/wiki/Regular_expression">Reguliere expressies</a> beschrijven patronen in strings die kunnen worden gebruikt om te bepalen of een bepaald patroon in een tekst voorkomt of niet.</p>
<p>In TreeSize kunnen reguliere expressies worden gebruikt om specifieke bestanden en/of mappen te vinden die voldoen aan de criteria die door reguliere expressies zijn opgegeven. Een <a class="reference external" href="https://www.jam-software.com/redirects/?regex_syntax_info">lijst van speciale tekens</a> wordt ondersteund.</p>
<p>De volgende tabel toont enkele van de meest gebruikte syntaxissen en biedt een paar voorbeelden:</p>
<div class="table-wrapper colwidths-given docutils container">
<table class="docutils align-default">
<colgroup>
<col style="width: 20.0%" />
<col style="width: 10.0%" />
<col style="width: 40.0%" />
<col style="width: 30.0%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Expressie</p></th>
<th class="head"><p>Syntaxis</p></th>
<th class="head"><p>Beschrijving</p></th>
<th class="head"><p>Voorbeeld</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p>Elk teken</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">.</span></code></p></td>
<td><p>Komt overeen met elk enkel teken, behalve een regelafbreking.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">a.o</span></code> komt overeen met “aro” in “around” en “abo” in “about”, maar niet met “acro” in “across”.</p></td>
</tr>
<tr class="row-odd"><td><p>Nul of meer</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">*</span></code></p></td>
<td><p>Komt overeen met nul of meer voorkomens van de voorafgaande expressie en maakt alle mogelijke overeenkomsten.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">a*b</span></code> komt overeen met “b” in “bat” en “ab” in “about”. <code class="docutils literal notranslate"><span class="pre">e.*e</span></code> komt overeen met het woord “enterprise”.</p></td>
</tr>
<tr class="row-even"><td><p>Een of meer</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">+</span></code></p></td>
<td><p>Komt overeen met ten minste één voorkomen van de voorafgaande expressie.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">ac+</span></code> komt overeen met woorden die de letter “a” gevolgd door ten minste één instantie van “c” bevatten, zoals “race” en “ace”. <code class="docutils literal notranslate"><span class="pre">a.+s</span></code> komt overeen met het woord “access”.</p></td>
</tr>
<tr class="row-odd"><td><p>Begin van de string</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">^</span></code></p></td>
<td><p>Komt overeen met het begin van een string.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">^[0-9]</span></code> komt overeen met strings die beginnen met een cijfer.</p></td>
</tr>
<tr class="row-even"><td><p>Einde van de string</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">$</span></code></p></td>
<td><p>Komt overeen met het einde van een string.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">exe$</span></code> komt overeen met strings die eindigen op “exe”.</p></td>
</tr>
<tr class="row-odd"><td><p>Begin van het woord</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[[:<:]]</span></code></p></td>
<td><p>Past alleen wanneer een woord op dit punt in de tekst begint.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[[:<:]]in</span></code> komt overeen met woorden zoals “inside” en “into” die beginnen met de letters “in”.</p></td>
</tr>
<tr class="row-even"><td><p>Einde van het woord</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[[:>:]]</span></code></p></td>
<td><p>Komt alleen overeen als een woord op dit punt in de tekst eindigt.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">ss[[:>:]]</span></code> komt overeen met woorden zoals “across” en “loss” die eindigen op de letters “ss”.</p></td>
</tr>
<tr class="row-odd"><td><p>Elk teken in de set</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[]</span></code></p></td>
<td><p>Past bij elk van de karakters in de []. Om een bereik van karakters op te geven, vermeld je de begin- en eindkarakters gescheiden door een streepje (-), zoals in [a-z].</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">be[n-t]</span></code> past bij “bet” in “between”, “ben” in “beneath”, en “bes” in “beside” maar niet “bel” in “below”.</p></td>
</tr>
<tr class="row-even"><td><p>Elk teken dat niet in de set staat</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[^...]</span></code></p></td>
<td><p>Past bij elk teken dat niet in de set van karakters staat die volgt op de <code class="docutils literal notranslate"><span class="pre">^</span></code>.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">be[^n-t]</span></code> past bij “bef” in “before”, “beh” in “behind”, en “bel” in “below”, maar niet “ben” in “beneath”.</p></td>
</tr>
<tr class="row-odd"><td><p>Of</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">|</span></code></p></td>
<td><p>Komt overeen met de expressie vóór of de expressie na het OF-symbool (|). Meestal gebruikt in een groep.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">(spons|mod)</span></code> komt overeen met “sponsbad” en “modderbad”.</p></td>
</tr>
<tr class="row-even"><td><p>Escape-teken</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">\</span></code></p></td>
<td><p>Komt overeen met het teken dat volgt op de backslash (<code class="docutils literal notranslate"><span class="pre">\</span></code>) als een letterlijke waarde. Dit stelt je in staat om de tekens te vinden die worden gebruikt in reguliere expressie-notatie, zoals <code class="docutils literal notranslate"><span class="pre">{</span></code> en <code class="docutils literal notranslate"><span class="pre">^</span></code>.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">\^</span></code> zoekt naar het <code class="docutils literal notranslate"><span class="pre">^</span></code>-teken.</p></td>
</tr>
<tr class="row-odd"><td><p>Herhaal n keer</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">{n}</span></code></p></td>
<td><p>Komt overeen met n voorkomens van de voorafgaande expressie.</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">[0-9]{4}</span></code> komt overeen met elke 4-cijferige reeks.</p></td>
</tr>
<tr class="row-even"><td><p>Groepering</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">()</span></code></p></td>
<td><p>Stelt je in staat om een set expressies samen te groeperen. Als je naar twee verschillende expressies in één zoekopdracht wilt zoeken, kun je de Groeperingsexpressie gebruiken om ze te combineren.</p></td>
<td><p>Als je wilt zoeken naar <code class="docutils literal notranslate"><span class="pre">[a-z][1-3]</span></code> of <code class="docutils literal notranslate"><span class="pre">[0-9][a-z]</span></code>, zou je ze combineren: <code class="docutils literal notranslate"><span class="pre">([a-z][1-3])|([0-9][a-z])</span></code>.</p></td>
</tr>
</tbody>
</table>
</div>
<section id="more-examples">
<h2>Meer voorbeelden<a class="headerlink" href="#more-examples" title="Link to this heading">¶</a></h2>
<div class="table-wrapper colwidths-given docutils container">
<table class="docutils align-default">
<colgroup>
<col style="width: 40.0%" />
<col style="width: 60.0%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Reguliere Expressie</p></th>
<th class="head"><p>Voorbeelden</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[0-9]</span></code> of <code class="docutils literal notranslate"><span class="pre">\d</span></code></p></td>
<td><p>Vind alle bestanden/mappen met ten minste één cijfer in hun naam.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">a|b</span></code></p></td>
<td><p>Vind alle bestanden/mappen die “a” of “b” in hun naam bevatten.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[^(A-Za-z)]</span></code></p></td>
<td><p>Vind alle bestanden/mappen die ten minste één teken in hun naam bevatten dat niet in het bereik A-Z of a-z ligt.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">^E[0-9]{7}$</span></code></p></td>
<td><p>Vind alle bestanden/mappen die beginnen met een “E” gevolgd door precies 7 cijfers.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[A-Za-z]:\\([^\\]+\\){2,4}[^\\]+$</span></code></p></td>
<td><p>Vind alle bestanden/mappen met een mapdiepte van ten minste 2 en maximaal 4.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">[^\x00-\x7F]</span></code></p></td>
<td><p>Vind alle bestanden/mappen met ongeldige ASCII-tekens.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[^\P{C}]</span></code></p></td>
<td><p>Vind alle bestanden/mappen met Unicode-tekens die niet kunnen worden afgedrukt.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">[\xA0]</span></code></p></td>
<td><p>Vind alle bestands-/mapnamen die het niet-afbreekbare spatie-teken (Unicode NOBR, U+00A0) bevatten in plaats van een normaal spatie-teken.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">[~\""#%&\*\:<>\?\/\\{|}]</span></code></p></td>
<td><p>Vind alle bestands- en mapnamen die tekens bevatten die ongeldig zijn op SharePoint-servers.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">^\s+.*</span></code></p></td>
<td><p>Vind alle bestanden en mappen waarvan de naam met een spatie begint.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">\s+(\.[^.]+)$</span></code></p></td>
<td><p>Zoek bestanden met een extensie die een spatie aan het einde van hun naam heeft.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">.*\s+$</span></code></p></td>
<td><p>Zoek mappen met een spatie aan het einde van hun naam.</p></td>
</tr>
</tbody>
</table>
</div>
</section>
<section id="tools-for-creating-regular-expressions">
<h2>Hulpmiddelen voor het maken van reguliere expressies<a class="headerlink" href="#tools-for-creating-regular-expressions" title="Link to this heading">¶</a></h2>
<p><a class="reference external" href="https://regex101.com/">https://regex101.com/</a> (online)</p>
<p><a class="reference external" href="http://regexpal.com/">http://regexpal.com/</a> (online)</p>
<p><a class="reference external" href="http://sourceforge.net/projects/regexpeditor/">http://sourceforge.net/projects/regexpeditor/</a> (download)</p>
<p><a class="reference external" href="http://sourceforge.net/projects/regextester/">http://sourceforge.net/projects/regextester/</a> (download)</p>
<p><a class="reference external" href="http://sourceforge.net/projects/regaxe/">http://sourceforge.net/projects/regaxe/</a> (download)</p>
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