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test inlining

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This commit is contained in:
Bruno Rybársky 2024-02-04 10:45:44 +01:00
parent 882c055346
commit d94a66ca2b
1 changed files with 47 additions and 30 deletions
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77
lib/inliner.php
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@ -1,64 +1,81 @@
<?php
function inlineLocalStylesFromHref($inputString) {
// Define the regular expression pattern to match <link> tags with href attribute for CSS files
$pattern = '/<link[^>]*?\srel=["\']?stylesheet["\'].*?\shref=["\']?\/(.*?)["\'][^>]*?>/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 = $match[1];
$cssFilePath = $_SERVER['DOCUMENT_ROOT'] . '/' . $href;
// Get the content of the local CSS file
$cssContent = file_get_contents($cssFilePath);
// Get the directory where the CSS file is located
$cssDir = dirname($cssFilePath);
// Replace relative paths in the CSS content to be relative to the CSS file's directory
$cssContent = preg_replace_callback('/url\(["\']?(\/.*?|.*?)["\']?\)/i', function($urlMatch) use ($cssDir) {
// Extract the URL value
$url = $urlMatch[1];
// Combine with the CSS file's directory to create an absolute path
$absolutePath = $cssDir . '/' . $url;
// Make the path relative to the CSS file's directory
$relativePath = ltrim(substr($absolutePath, strlen($_SERVER['DOCUMENT_ROOT'])), '/');
// Create the updated url() declaration
$updatedUrlDeclaration = 'url("' . $relativePath . '")';
return $updatedUrlDeclaration;
return 'url("' . $relativePath . '")';
}, $cssContent);
// Create an inline style tag with the modified CSS content
return "<style>\n{$cssContent}\n</style>";
// Minify the CSS content
$cssContent = minifyCss($cssContent);
return "<style>{$cssContent}</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');
// Minify the JavaScript content
$jsContent = minifyJs($jsContent);
// Create an inline script with the escaped content
return "<script>\n{$escapedJsContent}\n</script>";
$escapedJsContent = htmlspecialchars($jsContent, ENT_QUOTES, 'UTF-8');
return "<script>{$escapedJsContent}</script>";
}, $inputString);
return $outputString;
}
function minifyCss($css) {
// Remove comments
$css = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $css);
// Remove whitespace
$css = preg_replace('/\s+/', ' ', $css);
// Remove unnecessary semicolons
$css = str_replace(';}', '}', $css);
// Remove spaces around colons
$css = str_replace(': ', ':', $css);
// Remove spaces around commas
$css = str_replace(', ', ',', $css);
return trim($css);
}
function minifyJs($js) {
// Remove comments
$js = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $js);
// Remove newlines and tabs
$js = str_replace(array("\r\n", "\r", "\n", "\t"), '', $js);
// Remove unnecessary semicolons
$js = str_replace(';}', '}', $js);
// Remove spaces after function keyword
$js = str_replace('function ', 'function', $js);
// Remove spaces around operators
$js = preg_replace('/\s*([=+\-*/])\s*/', '$1', $js);
return trim($js);
}