silverstripe-cms/code/staticpublisher/FilesystemPublisher.php

180 lines
5.7 KiB
PHP
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<?php
/**
* Usage: Object::add_extension("SiteTree", "FilesystemPublisher('../static-folder/')")
*/
class FilesystemPublisher extends StaticPublisher {
protected $destFolder;
protected $fileExtension;
protected static $static_base_url = null;
/**
* Set a different base URL for the static copy of the site.
* This can be useful if you are running the CMS on a different domain from the website.
*/
static function set_static_base_url($url) {
self::$static_base_url = $url;
}
/**
* @param $destFolder The folder to save the cached site into
* @param $fileExtension The file extension to use, for example, 'html'. If omitted, then each page will be placed
* in its own directory, with the filename 'index.html'. If you set the extension to PHP, then a simple PHP script will
* be generated that can do appropriate cache & redirect header negotation
*/
function __construct($destFolder, $fileExtension = null) {
if(substr($destFolder, -1) == '/') $destFolder = substr($destFolder, 0, -1);
$this->destFolder = $destFolder;
$this->fileExtension = $fileExtension;
}
function publishPages($urls) {
// This can be quite memory hungry and time-consuming
// @todo - Make a more memory efficient publisher
set_time_limit(0);
ini_set("memory_limit" , -1);
//$base = Director::absoluteURL($this->destFolder);
//$base = preg_replace('/\/[^\/]+\/\.\./','',$base) . '/';
if(self::$static_base_url) Director::setBaseURL(self::$static_base_url);
$files = array();
$i = 0;
$totalURLs = sizeof($urls);
foreach($urls as $url) {
$i++;
if($url && !is_string($url)) {
user_error("Bad url:" . var_export($url,true), E_USER_WARNING);
continue;
}
if(StaticPublisher::echo_progress()) {
echo " * Publishing page $i/$totalURLs: $url\n";
flush();
}
Requirements::clear();
$response = Director::test(str_replace('+', ' ', $url));
Requirements::clear();
DataObject::flush_and_destroy_cache();
DataObject::destroy_cached_get_calls(false);
DataObject::cache_get_calls(false);
//echo 'Memory: ' . round(memory_get_usage()/100000)/10 . "\n";
/*
if(!is_object($response)) {
echo "String response for url '$url'\n";
print_r($response);
}*/
// Generate file content
// PHP file caching will generate a simple script from a template
if($this->fileExtension == 'php') {
if(is_object($response)) {
if($response->getStatusCode() == '301' || $response->getStatusCode() == '302') {
$content = $this->generatePHPCacheRedirection($response->getHeader('Location'));
} else {
$content = $this->generatePHPCacheFile($response->getBody(), HTTP::get_cache_age(), date('Y-m-d H:i:s'));
}
} else {
$content = $this->generatePHPCacheFile($response . '', HTTP::get_cache_age(), date('Y-m-d H:i:s'));
}
// HTML file caching generally just creates a simple file
} else {
if(is_object($response)) {
if($response->getStatusCode() == '301' || $response->getStatusCode() == '302') {
$absoluteURL = Director::absoluteURL($response->getHeader('Location'));
$content = "<meta http-equiv=\"refresh\" content=\"2; URL=$absoluteURL\">";
} else {
$content = $response->getBody();
}
} else {
$content = $response . '';
}
}
if($this->fileExtension) $filename = $url ? "$url.$this->fileExtension" : "index.$this->fileExtension";
else $filename = $url ? "$url/index.html" : "index.html";
$files[$filename] = array(
'Content' => $content,
'Folder' => (dirname($filename) == '/') ? '' : (dirname($filename).'/'),
'Filename' => basename($filename),
);
// Add externals
/*
$externals = $this->externalReferencesFor($content);
if($externals) foreach($externals as $external) {
// Skip absolute URLs
if(preg_match('/^[a-zA-Z]+:\/\//', $external)) continue;
// Drop querystring parameters
$external = strtok($external, '?');
if(file_exists("../" . $external)) {
// Break into folder and filename
if(preg_match('/^(.*\/)([^\/]+)$/', $external, $matches)) {
$files[$external] = array(
"Copy" => "../$external",
"Folder" => $matches[1],
"Filename" => $matches[2],
);
} else {
user_error("Can't parse external: $external", E_USER_WARNING);
}
} else {
$missingFiles[$external] = true;
}
}*/
}
if(self::$static_base_url) Director::setBaseURL(null);
//Debug::show(array_keys($files));
//Debug::show(array_keys($missingFiles));
$base = "../$this->destFolder";
foreach($files as $file) {
Filesystem::makeFolder("$base/$file[Folder]");
if(isset($file['Content'])) {
$fh = fopen("$base/$file[Folder]$file[Filename]", "w");
fwrite($fh, $file['Content']);
fclose($fh);
} else if(isset($file['Copy'])) {
copy($file['Copy'], "$base/$file[Folder]$file[Filename]");
}
}
}
/**
* Generate the templated content for a PHP script that can serve up the given piece of content with the given age and expiry
*/
protected function generatePHPCacheFile($content, $age, $lastModified) {
$template = file_get_contents('../cms/code/staticpublisher/CachedPHPPage.tmpl');
return str_replace(
array('**MAX_AGE**', '**LAST_MODIFIED**', '**CONTENT**'),
array((int)$age, $lastModified, $content),
$template);
}
/**
* Generate the templated content for a PHP script that can serve up a 301 redirect to the given destionation
*/
protected function generatePHPCacheRedirection($destination) {
$template = file_get_contents('../cms/code/staticpublisher/CachedPHPRedirection.tmpl');
return str_replace(
array('**DESTINATION**'),
array($destination),
$template);
}
}
?>