paste.thms.uk/weblog-pre-process.php 1 year ago
shell_exec('git config core.quotepath off');
echo 'git diff --name-only '.$argv[1].' ' . $argv[2];
$diff = shell_exec('git diff --name-only '.$argv[1].' ' . $argv[2]);
if($diff == '') {
echo "\n*** No changes detected. Are you running the latest version of the action? See https://github.com/neatnik/weblog.lol for details.";
exit;
}
$diff = explode("\n", $diff);
// get MD5 hashes of all static files
$cssFiles = getHashes('css', ['css']);
$jsFiles = getHashes('js', ['js']);
$imageFiles = getHashes('images', ['jpg','jpeg','gif','png','svg']);
$toReplace = array_merge(
$cssFiles,
$jsFiles,
$imageFiles,
);
// make sure we scan all templates for references to static files, regardless of whether these have changed or not
foreach($diff as $file) {
if(array_key_exists($file,$cssFiles) || array_key_exists($file, $jsFiles)) {
$diff[] = 'configuration/template.html';
$templates = scandir('weblog/templates');
foreach($templates as $template) {
if(in_array(pathinfo('weblog/templates/' . $template, PATHINFO_EXTENSION), ['md','markdown','html'])) {
$diff[] = 'weblog/templates/' . $template;
}
}
}
}
$diff = array_unique($diff);
// Replace references to these static files in any .md and .html files
foreach($diff as $file) {
if($file == '') {
continue;
}
$fileEnding = pathinfo($file, PATHINFO_EXTENSION);
if(!in_array($fileEnding, ['md','markdown','html'])) {
echo PHP_EOL . 'Skipping file: ' . $file;
continue;
}
echo "\n*** Examining file: $file...";
// Firstly: get the relative directory from the file we are looking at, to the root directory
$structure = explode('/', $file);
foreach($structure as $i => $folder) {
if($i !== count($structure) - 1) {
$structure[$i] = '..';
}
}
unset($structure[count($structure) - 1]);
$relativeDir = join('/', $structure) . '/';
// now replace any relative references to the static files, found in HTML files, as well as in markdown links
$fileContents = file_get_contents($file);
foreach($toReplace as $cssFile => $hash) {
$pattern = '#(src=|href=)([\'"])' . preg_quote($relativeDir) . preg_quote($cssFile) . '([\'"])#';
$replacement = '$1$2https://media.thms.uk/' . $cssFile . '?v=' . $hash . '$3';
echo "\n*** replacing " . $pattern . ' with ' . $replacement;
$fileContents = preg_replace($pattern, $replacement, $fileContents);
}
// finally, replace relative links to embedded links in markdown files
if(pathinfo($file, PATHINFO_EXTENSION) === 'md') {
foreach($imageFiles as $imageFile => $hash) {
$pattern = '|(!\[[^]]+])\(' . preg_quote($relativeDir) . preg_quote($imageFile) . '\)|';
$replacement = '$1(https://media.thms.uk/' . $imageFile . '?v=' . $hash . ')';
echo "\n*** replacing " . $pattern . ' with ' . $replacement;
$fileContents = preg_replace($pattern, $replacement, $fileContents);
}
}
file_put_contents($file, $fileContents);
}
// delete unchanged static files, so that we don't upload them to S3 every time
foreach(['css','js','images'] as $directory) {
$o_dir = new RecursiveDirectoryIterator($directory);
$o_iter = new RecursiveIteratorIterator($o_dir);
foreach($o_iter as $file) {
echo PHP_EOL . $file;
if(in_array($file->getExtension(), ['jpg','jpeg','gif','png','svg', 'css','js']) && !in_array($file->getPathName(), $diff)) {
echo PHP_EOL . '*** Deleting unchanged ' . $file->getPathName();
unlink($file->getPathName());
}
}
}
function getHashes(string $directory, array $types): array
{
$return = [];
$o_dir = new RecursiveDirectoryIterator($directory);
$o_iter = new RecursiveIteratorIterator($o_dir);
foreach($o_iter as $file) {
if(in_array($file->getExtension(), $types)) {
$return[$file->getPathName()] = hash_file('md5', $file->getPathName());
}
}
return $return;
}