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<?php
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#
# BigPipe main class [Thomas Lange <code@nerdmind.de>] #
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#
# #
# The BigPipe main class is responsible for sorting and rendering the pagelets #
# and their associated resources. This class also provides methods to turn off #
# the pipeline mode or turn on the debugging mode. #
# #
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#
namespace BigPipe;
class BigPipe {
private static $debugging = FALSE;
private static $enabled = TRUE;
private static $pagelets = [];
#===============================================================================
# Enable or disable the pipeline mode
#===============================================================================
public static function enabled($change = NULL) {
if($change !== NULL) {
self::$enabled = (bool) $change;
}
return self::$enabled;
}
#===============================================================================
# Return if debugging is enabled or change
#===============================================================================
public static function debugging($change = NULL): bool {
if($change !== NULL) {
self::$debugging = (bool) $change;
}
return self::$debugging;
}
#===============================================================================
# Insert pagelet into queue
#===============================================================================
public static function enqueue(Pagelet $Pagelet) {
self::$pagelets[spl_object_hash($Pagelet)] = $Pagelet;
}
#===============================================================================
# Remove pagelet from queue
#===============================================================================
public static function dequeue(Pagelet $Pagelet) {
unset(self::$pagelets[spl_object_hash($Pagelet)]);
}
#===============================================================================
# Prints a single pagelet response
#===============================================================================
private static function singleResponse(Pagelet $Pagelet, $last = FALSE) {
if(self::debugging()) {
self::addDebugPhaseDoneJS($Pagelet);
array_map('self::addDebugPhaseDoneJS', $Pagelet->getResources()[Resource::TYPE_STYLESHEET]);
array_map('self::addDebugPhaseDoneJS', $Pagelet->getResources()[Resource::TYPE_JAVASCRIPT]);
usleep(rand(125, 175) * 2000);
}
$pageletJSON = $Pagelet->getStructure();
if($last) {
$pageletJSON['IS_LAST'] = TRUE;
}
$pageletHTML = removeLineBreaksAndTabs($Pagelet->getHTML());
$pageletHTML = str_replace('--', '--', $pageletHTML);
$pageletJSON = json_encode($pageletJSON, (self::debugging() ? JSON_PRETTY_PRINT : NULL));
echo "<code hidden id=\"_{$Pagelet->getID()}\"><!-- {$pageletHTML} --></code>\n";
echo "<script>BigPipe.onPageletArrive({$pageletJSON}, document.getElementById(\"_{$Pagelet->getID()}\"));</script>\n\n";
}
#===============================================================================
# Sends output buffer so far as possible towards user
#===============================================================================
public static function flushOutputBuffer() {
ob_flush(); flush();
}
#===============================================================================
# Renders all remaining pagelets from the queue in the appropriate order
#===============================================================================
public static function render() {
self::flushOutputBuffer();
$i = 0;
$pagelets_ordered = [];
foreach(self::$pagelets as $Pagelet) {
$pagelets_ordered[$Pagelet->getPriority()][] = $Pagelet;
}
krsort($pagelets_ordered);
if(!empty($pagelets_ordered)) {
$pagelets = call_user_func_array('array_merge', $pagelets_ordered);
foreach($pagelets as $Pagelet) {
if(!self::enabled()) {
foreach($Pagelet->getResources()[Resource::TYPE_STYLESHEET] as $Resource) {
echo "{$Resource->renderHTML()}\n";
}
foreach($Pagelet->getResources()[Resource::TYPE_JAVASCRIPT] as $Resource) {
echo "{$Resource->renderHTML()}\n";
}
foreach($Pagelet->getJSCode() as $JSCode) {
echo "<script>{$JSCode}</script>\n";
}
}
else {
self::singleResponse($Pagelet, (count(self::$pagelets) === ++$i));
self::flushOutputBuffer();
}
}
}
}
#===============================================================================
# Add PhaseDoneJS for debugging Pagelet and Resource
#===============================================================================
private static function addDebugPhaseDoneJS($Instance) {
$objpath = str_replace('\\', '|', get_class($Instance));
if($Instance instanceof Pagelet) {
$message = "console.log(\"%%c[{$objpath}]%%c#(%%c%s%%c): PhaseDoneJS for phase: %s\", \"font-weight:bold\", \"color:#666\", \"color:#008B45\", \"color:#666\")";
$Instance->addPhaseDoneJS($Instance::PHASE_INIT, sprintf($message, $Instance->getID(), 'INIT'));
$Instance->addPhaseDoneJS($Instance::PHASE_LOADCSS, sprintf($message, $Instance->getID(), 'LOADCSS'));
$Instance->addPhaseDoneJS($Instance::PHASE_HTML, sprintf($message, $Instance->getID(), 'HTML'));
$Instance->addPhaseDoneJS($Instance::PHASE_LOADJS, sprintf($message, $Instance->getID(), 'LOADJS'));
$Instance->addPhaseDoneJS($Instance::PHASE_DONE, sprintf($message, $Instance->getID(), 'DONE'));
return $Instance;
}
if($Instance instanceof Resource) {
$message = "console.log(\"[{$objpath}]%%c#(%%c%s%%c): PhaseDoneJS for phase: %s\", \"color:#666\", \"color:#008B45\", \"color:#666\")";
$Instance->addPhaseDoneJS($Instance::PHASE_INIT, sprintf($message, $Instance->getID(), 'INIT'));
$Instance->addPhaseDoneJS($Instance::PHASE_LOAD, sprintf($message, $Instance->getID(), 'LOAD'));
$Instance->addPhaseDoneJS($Instance::PHASE_DONE, sprintf($message, $Instance->getID(), 'DONE'));
return $Instance;
}
}
}
?>
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