Is there any hook/signal or anything else so that I can modify final HTML code of frontend page rendered by TYPO3?
My use case is: I want to apply some regex and logging for links that are displayed across whole website - no matter if the link is rendered via tt_content bodytext (typolink or hardcoded) or by frontend plugin or comes via typoscript or possibly any other way.
The PAGE object in TypoScript has stdWrap, so you can use userFunc there.
page = PAGE
page {
...
stdWrap.userFunc = Your\NameSpace\YourClass->doStuff
}
If you prefer to use real hooks instead of stdWrap you can look at the function generatePage_postProcessing which has three hooks. In the CoreApi Documentation you can find the way how to use hooks.
In your ext_localconf.php you can define your hook usage. As example:
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_fe.php']['contentPostProc-all'][] = My\NameSpace\Hooks\PageGenerateHooks::class . '->contentPostProcAll'
Now in your hook class you can modify the content:
<?php
namespace My\Namespace\Hooks;
use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
class PageGenerateHooks
{
/*
* \TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController $pObj
*/
public function contentPostProcAll(TypoScriptFrontendController $pObj)
{
$pObj->content = preg_replace('#mySearch#i','myTerm', $pObj->content;
}
}