104 lines
3.3 KiB
PHP
104 lines
3.3 KiB
PHP
<?php
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/**
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* \mainpage Shimmie2 / SCore Documentation
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*
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* SCore is a framework designed for writing flexible, extendable applications.
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* Whereas most PHP apps are built monolithically, score's event-based nature
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* allows parts to be mixed and matched. For instance, the most famous
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* collection of score extensions is the Shimmie image board, which includes
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* user management, a wiki, a private messaging system, etc. But one could
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* easily remove the image board bits and simply have a wiki with users and
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* PMs; or one could replace it with a blog module; or one could have a blog
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* which links to images on an image board, with no wiki or messaging, and so
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* on and so on...
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*
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* Dijkstra will kill me for personifying my architecture, but I can't think
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* of a better way without going into all the little details.
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* There are a bunch of Extension subclasses, they talk to each other by sending
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* and receiving Event subclasses. The primary driver for each conversation is the
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* initial PageRequestEvent. If an Extension wants to display something to the
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* user, it adds a block to the Page data store. Once the conversation is over, the Page is passed to the
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* current theme's Layout class which will tidy up the data and present it to
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* the user. To see this in a more practical sense, see \ref hello.
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*
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* To learn more about the architecture:
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*
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* \li \ref eande
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* \li \ref themes
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*
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* To learn more about practical development:
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*
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* \li \ref scglobals
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* \li \ref unittests
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*
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* \page scglobals SCore Globals
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*
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* There are four global variables which are pretty essential to most extensions:
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*
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* \li $config -- some variety of Config subclass
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* \li $database -- a Database object used to get raw SQL access
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* \li $page -- a Page to holds all the loose bits of extension output
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* \li $user -- the currently logged in User
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*
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* Each of these can be imported at the start of a function with eg "global $page, $user;"
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*/
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if(!file_exists("data/config/shimmie.conf.php")) {
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header("Location: install.php");
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exit;
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}
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require_once "core/sys_config.inc.php";
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require_once "core/util.inc.php";
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// set up and purify the environment
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_version_check();
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_sanitise_environment();
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try {
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// load base files
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ctx_log_start("Opening files");
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$files = array_merge(zglob("core/*.php"), zglob("ext/{".ENABLED_EXTS."}/main.php"));
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foreach($files as $filename) {
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require_once $filename;
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}
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ctx_log_endok();
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ctx_log_start("Connecting to DB");
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// connect to the database
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$database = new Database();
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$config = new DatabaseConfig($database);
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ctx_log_endok();
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// load the theme parts
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ctx_log_start("Loading themelets");
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foreach(_get_themelet_files(get_theme()) as $themelet) {
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require_once $themelet;
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}
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ctx_log_endok();
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_load_extensions();
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// start the page generation waterfall
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$page = class_exists("CustomPage") ? new CustomPage() : new Page();
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$user = _get_user();
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send_event(new InitExtEvent());
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if(!is_cli()) { // web request
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send_event(new PageRequestEvent(@$_GET["q"]));
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$page->display();
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}
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else { // command line request
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send_event(new CommandEvent($argv));
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}
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// saving cache data and profiling data to disk can happen later
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if(function_exists("fastcgi_finish_request")) fastcgi_finish_request();
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$database->commit();
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ctx_log_endok();
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}
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catch(Exception $e) {
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if($database) $database->rollback();
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_fatal_error($e);
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ctx_log_ender();
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}
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