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POfreepascal regexp replace
 

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    <p>Is there an easy way to do a RegExp replace in FreePascal/Lazarus?</p> <p>Hunting around I can see that I can do a match fairly easily, but I'm struggling to find functions to do a search and replace.</p> <p>What I'm trying to acheive is as follows.</p> <ul> <li>I have an XML file loaded into a SynEdit component.</li> <li>The XML file has a decalaration at the start </li> <li>The DTD is held in a seperate file.</li> <li>I don't want to combine the two in one file, but I do wantto validate the XML as it is being editted.</li> <li>I'm reading the XML into a string variable and I want to insert the DTD between the and the XML content in a temporary string variable (to create a compliant XML with self contained DTD) that can be parsed and validated.</li> </ul> <p>So essentially I have:</p> <pre><code>&lt;?Line1?&gt; Line2 Line3 </code></pre> <p>And I want to do a RegExp type search and replace for '&lt;?Line1?>' replaceing with '&lt;?Line1?>\n&lt;![DTD\nINFO WOULD\nGO HERE\n!]' to give me:</p> <pre><code>&lt;?Line1?&gt; &lt;![DTD INFO WOULD GO HERE !] Line2 Line3 </code></pre> <p>For example in PHP I would use:</p> <pre><code>preg_replace('/(&lt;\?.*\?&gt;)/im','$1 &lt;![DTD INFO WOULD GO HERE !]',$sourcestring); </code></pre> <p>But there doesn't seem to be an equivalent set of regexp functions for FreePascal / Lazarus - just a simple/basic RegExp match function.</p> <p>Or is there an easier way without using regular expressions - I don't want to assume that the declaration is always there in the correct position on Line 1 though - just to complicate things.</p> <p>Thanks,</p> <p>FM</p>
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    1. COI avoid regexes generally, but afaik there are PCRE header conversions out there.
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      1. USMarco van de Voort
    2. COThat's got me searching in the right direction, I think. Found a few Delphi compatible wrapped versions so just got to figure out how to integrate into Lazarus now.
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    3. COThanks @Marco-van-de-Voort. I've downloaded `TPerlRegEx` which seems to be a pretty good library from reading around, but I cannot figure out or find any documentation about how to integrate a Delphi library package (I'm aware that this may not be a particulary correct term) into Lazarus. Can anyone give me any pointers?
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