Cofem/lib/inliner.php
2024-02-04 10:34:57 +01:00

60 lines
2.5 KiB
PHP

<?php
function inlineLocalStylesFromHref($inputString) {
// Define the regular expression pattern to match <link> tags with href attribute for CSS files
$pattern = '/<link.*?(?:(?:rel=["\']stylesheet["\'].*?href=["\']\/(.*?)["\'])|(?:href=["\']\/(.*?)["\'].*?rel=["\']stylesheet["\'])).*?>/i';
// Use preg_replace_callback to replace matched link tags with inline styles
$outputString = preg_replace_callback($pattern, function($match) {
// Extract the href attribute value
$href = isset($match[1]) ? $match[1] : $match[2];
$fname = $_SERVER['DOCUMENT_ROOT'] . '/' . $href;
echo "from $fname";
// Get the content of the local CSS file
$cssContent = file_get_contents($_SERVER['DOCUMENT_ROOT'] . '/' . $href);
// Replace url() declarations in the CSS content with inline data
$cssContent = preg_replace_callback('/url\(["\']?\/(.*?)(?:[?#].*?)?["\']?\)/i', function($urlMatch) {
// Extract the URL value
$url = $urlMatch[1];
// Get the content of the external file specified in the url()
$fileContent = file_get_contents($_SERVER['DOCUMENT_ROOT'] . '/' . $url);
// Base64 encode the content for inline use
$base64Content = base64_encode($fileContent);
// Create the inline data URI
$dataUri = 'url("data:application/octet-stream;base64,' . $base64Content . '")';
return $dataUri;
}, $cssContent);
// Create an inline style tag with the modified CSS content
return "<style>\n{$cssContent}\n</style>";
}, $inputString);
return $outputString;
}
function inlineScriptFromSrc($inputString) {
// Define the regular expression pattern to match <script> tags with src attribute
$pattern = '/<script.*?src=["\']\/(.*?)["\'].*?>\s*<\/script>/i';
// Use preg_replace_callback to replace matched script tags with inline script
$outputString = preg_replace_callback($pattern, function($match) {
// Extract the src attribute value
$src = $match[1];
// Get the content of the JavaScript file
$jsContent = file_get_contents($_SERVER['DOCUMENT_ROOT'] . '/' . $src);
// Escape the JavaScript content for inline use
$escapedJsContent = htmlspecialchars($jsContent, ENT_QUOTES, 'UTF-8');
// Create an inline script with the escaped content
return "<script>\n{$escapedJsContent}\n</script>";
}, $inputString);
return $outputString;
}