aa63c23839
There have been some conversations in the last weeks which explained several parts of the code, so add it to the source code documentation. Also some other small source code documentation improvements.
822 lines
19 KiB
PHP
Executable File
822 lines
19 KiB
PHP
Executable File
<?php
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/**
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* @file include/plugin.php
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*
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* @brief Some functions to handle addons and themes.
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*/
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/**
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* @brief Unloads an addon.
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*
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* @param string $plugin name of the addon
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*/
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function unload_plugin($plugin){
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logger("Addons: unloading " . $plugin, LOGGER_DEBUG);
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@include_once('addon/' . $plugin . '/' . $plugin . '.php');
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if(function_exists($plugin . '_unload')) {
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$func = $plugin . '_unload';
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$func();
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}
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}
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/**
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* @brief Uninstalls an addon.
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*
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* @param string $plugin name of the addon
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* @return boolean
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*/
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function uninstall_plugin($plugin) {
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unload_plugin($plugin);
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if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
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return false;
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logger("Addons: uninstalling " . $plugin);
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//$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
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@include_once('addon/' . $plugin . '/' . $plugin . '.php');
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if(function_exists($plugin . '_uninstall')) {
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$func = $plugin . '_uninstall';
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$func();
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}
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q("DELETE FROM addon WHERE aname = '%s' ",
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dbesc($plugin)
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);
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}
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/**
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* @brief Installs an addon.
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*
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* This function is called once to install the addon (either from the cli or via
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* the web admin). This will also call load_plugin() once.
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*
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* @param string $plugin name of the addon
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* @return bool
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*/
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function install_plugin($plugin) {
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if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
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return false;
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logger("Addons: installing " . $plugin);
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$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
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@include_once('addon/' . $plugin . '/' . $plugin . '.php');
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if(function_exists($plugin . '_install')) {
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$func = $plugin . '_install';
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$func();
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}
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$plugin_admin = (function_exists($plugin . '_plugin_admin') ? 1 : 0);
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q("INSERT INTO addon (aname, installed, tstamp, plugin_admin) VALUES ( '%s', 1, %d , %d ) ",
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dbesc($plugin),
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intval($t),
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$plugin_admin
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);
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load_plugin($plugin);
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}
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/**
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* @brief loads an addon by it's name.
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*
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* @param string $plugin name of the addon
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* @return bool
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*/
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function load_plugin($plugin) {
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// silently fail if plugin was removed
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if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
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return false;
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logger("Addons: loading " . $plugin, LOGGER_DEBUG);
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//$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
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@include_once('addon/' . $plugin . '/' . $plugin . '.php');
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if(function_exists($plugin . '_load')) {
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$func = $plugin . '_load';
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$func();
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// we can add the following with the previous SQL
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// once most site tables have been updated.
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// This way the system won't fall over dead during the update.
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if(file_exists('addon/' . $plugin . '/.hidden')) {
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q("update addon set hidden = 1 where name = '%s'",
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dbesc($plugin)
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);
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}
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return true;
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}
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else {
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logger("Addons: FAILED loading " . $plugin);
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return false;
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}
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}
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/**
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* @brief Check if addon is installed.
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*
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* @param string $name
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* @return boolean
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*/
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function plugin_is_installed($name) {
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$r = q("select aname from addon where aname = '%s' and installed = 1 limit 1",
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dbesc($name)
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);
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if($r)
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return true;
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return false;
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}
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/**
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* @brief Reload all updated plugins.
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*/
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function reload_plugins() {
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$plugins = get_config('system', 'addon');
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if(strlen($plugins)) {
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$r = q("SELECT * FROM addon WHERE installed = 1");
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if(count($r))
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$installed = $r;
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else
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$installed = array();
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$parr = explode(',', $plugins);
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if(count($parr)) {
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foreach($parr as $pl) {
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$pl = trim($pl);
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$fname = 'addon/' . $pl . '/' . $pl . '.php';
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if(file_exists($fname)) {
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$t = @filemtime($fname);
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foreach($installed as $i) {
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if(($i['aname'] == $pl) && ($i['tstamp'] != $t)) {
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logger('Reloading plugin: ' . $i['aname']);
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@include_once($fname);
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if(function_exists($pl . '_unload')) {
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$func = $pl . '_unload';
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$func();
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}
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if(function_exists($pl . '_load')) {
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$func = $pl . '_load';
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$func();
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}
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q("UPDATE addon SET tstamp = %d WHERE id = %d",
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intval($t),
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intval($i['id'])
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);
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}
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}
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}
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}
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}
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}
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}
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/**
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* @brief Get a list of non hidden addons.
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*
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* @return array
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*/
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function visible_plugin_list() {
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$r = q("select * from addon where hidden = 0 order by aname asc");
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return(($r) ? ids_to_array($r,'aname') : array());
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}
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/**
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* @brief Registers a hook.
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*
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* @see ::Zotlabs::Extend::Hook::register()
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*
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* @param string $hook the name of the hook
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* @param string $file the name of the file that hooks into
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* @param string $function the name of the function that the hook will call
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* @param int $priority A priority (defaults to 0)
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* @return mixed|bool
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*/
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function register_hook($hook, $file, $function, $priority = 0) {
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$r = q("SELECT * FROM hook WHERE hook = '%s' AND file = '%s' AND fn = '%s' LIMIT 1",
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dbesc($hook),
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dbesc($file),
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dbesc($function)
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);
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if($r)
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return true;
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$r = q("INSERT INTO hook (hook, file, fn, priority) VALUES ( '%s', '%s', '%s', '%s' )",
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dbesc($hook),
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dbesc($file),
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dbesc($function),
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dbesc($priority)
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);
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return $r;
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}
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/**
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* @brief unregisters a hook.
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*
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* @see ::Zotlabs::Extend::Hook::unregister
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*
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* @param string $hook the name of the hook
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* @param string $file the name of the file that hooks into
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* @param string $function the name of the function that the hook called
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* @return array
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*/
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function unregister_hook($hook, $file, $function) {
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$r = q("DELETE FROM hook WHERE hook = '%s' AND file = '%s' AND fn = '%s'",
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dbesc($hook),
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dbesc($file),
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dbesc($function)
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);
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return $r;
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}
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//
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// It might not be obvious but themes can manually add hooks to the App::$hooks
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// array in their theme_init() and use this to customise the app behaviour.
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// UPDATE: use insert_hook($hookname,$function_name) to do this
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//
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function load_hooks() {
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App::$hooks = array();
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$r = q("SELECT * FROM hook WHERE true ORDER BY priority DESC");
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if($r) {
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foreach($r as $rr) {
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if(! array_key_exists($rr['hook'],App::$hooks))
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App::$hooks[$rr['hook']] = array();
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App::$hooks[$rr['hook']][] = array($rr['file'],$rr['fn'],$rr['priority'],$rr['hook_version']);
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}
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}
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//logger('hooks: ' . print_r(App::$hooks,true));
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}
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/**
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* @brief Inserts a hook into a page request.
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*
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* Insert a short-lived hook into the running page request.
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* Hooks are normally persistent so that they can be called
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* across asynchronous processes such as delivery and poll
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* processes.
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*
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* insert_hook lets you attach a hook callback immediately
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* which will not persist beyond the life of this page request
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* or the current process.
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*
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* @param string $hook
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* name of hook to attach callback
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* @param string $fn
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* function name of callback handler
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* @param int $version (optional) default 0
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* @param int $priority (optional) default 0
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*/
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function insert_hook($hook, $fn, $version = 0, $priority = 0) {
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if(! is_array(App::$hooks))
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App::$hooks = array();
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if(! array_key_exists($hook, App::$hooks))
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App::$hooks[$hook] = array();
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App::$hooks[$hook][] = array('', $fn, $priority, $version);
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}
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/**
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* @brief Calls a hook.
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*
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* Use this function when you want to be able to allow a hook to manipulate
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* the provided data.
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*
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* @param string $name of the hook to call
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* @param[in,out] string|array &$data to transmit to the callback handler
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*/
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function call_hooks($name, &$data = null) {
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$a = 0;
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if((is_array(App::$hooks)) && (array_key_exists($name, App::$hooks))) {
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foreach(App::$hooks[$name] as $hook) {
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$origfn = $hook[1];
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if($hook[0])
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@include_once($hook[0]);
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if(preg_match('|^a:[0-9]+:{.*}$|s', $hook[1])) {
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$hook[1] = unserialize($hook[1]);
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}
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elseif(strpos($hook[1],'::')) {
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// We shouldn't need to do this, but it appears that PHP
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// isn't able to directly execute a string variable with a class
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// method in the manner we are attempting it, so we'll
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// turn it into an array.
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$hook[1] = explode('::',$hook[1]);
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}
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if(is_callable($hook[1])) {
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$func = $hook[1];
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if($hook[3])
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$func($data);
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else
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$func($a, $data);
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}
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else {
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// Don't do any DB write calls if we're currently logging a possibly failed DB call.
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if(! DBA::$logging) {
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// The hook should be removed so we don't process it.
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q("DELETE FROM hook WHERE hook = '%s' AND file = '%s' AND fn = '%s'",
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dbesc($name),
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dbesc($hook[0]),
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dbesc($origfn)
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);
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}
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}
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}
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}
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}
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/**
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* @brief Parse plugin comment in search of plugin infos.
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*
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* like
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* \code
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* * Name: Plugin
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* * Description: A plugin which plugs in
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* * Version: 1.2.3
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* * Author: John <profile url>
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* * Author: Jane <email>
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* *
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*\endcode
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* @param string $plugin the name of the plugin
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* @return array with the plugin information
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*/
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function get_plugin_info($plugin){
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$m = array();
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$info = array(
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'name' => $plugin,
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'description' => '',
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'author' => array(),
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'maintainer' => array(),
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'version' => '',
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'requires' => ''
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);
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if (!is_file("addon/$plugin/$plugin.php"))
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return $info;
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$f = file_get_contents("addon/$plugin/$plugin.php");
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$f = escape_tags($f);
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$r = preg_match("|/\*.*\*/|msU", $f, $m);
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if ($r){
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$ll = explode("\n", $m[0]);
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foreach( $ll as $l ) {
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$l = trim($l, "\t\n\r */");
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if ($l != ""){
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list($k, $v) = array_map("trim", explode(":", $l, 2));
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$k = strtolower($k);
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if ($k == 'author' || $k == 'maintainer'){
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$r = preg_match("|([^<]+)<([^>]+)>|", $v, $m);
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if ($r) {
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$info[$k][] = array('name' => $m[1], 'link' => $m[2]);
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} else {
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$info[$k][] = array('name' => $v);
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}
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}
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else {
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$info[$k] = $v;
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}
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}
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}
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}
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return $info;
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}
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function check_plugin_versions($info) {
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if(! is_array($info))
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return true;
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if(array_key_exists('minversion',$info)) {
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if(! version_compare(STD_VERSION,trim($info['minversion']), '>=')) {
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logger('minversion limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
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return false;
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}
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}
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if(array_key_exists('maxversion',$info)) {
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if(version_compare(STD_VERSION,trim($info['maxversion']), '>')) {
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logger('maxversion limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
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return false;
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}
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}
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if(array_key_exists('minphpversion',$info)) {
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if(! version_compare(PHP_VERSION,trim($info['minphpversion']), '>=')) {
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logger('minphpversion limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
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return false;
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}
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}
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if(array_key_exists('serverroles',$info)) {
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$role = \Zotlabs\Lib\System::get_server_role();
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if(! (
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stristr($info['serverroles'],'*')
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|| stristr($info['serverroles'],'any')
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|| stristr($info['serverroles'],$role))) {
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logger('serverrole limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
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return false;
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}
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}
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|
|
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if(array_key_exists('requires',$info)) {
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$arr = explode(',',$info['requires']);
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$found = true;
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if($arr) {
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foreach($arr as $test) {
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$test = trim($test);
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if(! $test)
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continue;
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if(strpos($test,'.')) {
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$conf = explode('.',$test);
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if(get_config(trim($conf[0]),trim($conf[1])))
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return true;
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else
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return false;
|
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}
|
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if(! in_array($test,App::$plugins))
|
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$found = false;
|
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}
|
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}
|
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if(! $found)
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return false;
|
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}
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|
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return true;
|
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}
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|
|
|
|
/**
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* @brief Parse theme comment in search of theme infos.
|
|
*
|
|
* like
|
|
* \code
|
|
* * Name: My Theme
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|
* * Description: My Cool Theme
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* * Version: 1.2.3
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* * Author: John <profile url>
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* * Maintainer: Jane <profile url>
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* * Compat: Friendica [(version)], Red [(version)]
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* *
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* \endcode
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* @param string $theme the name of the theme
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* @return array
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*/
|
|
function get_theme_info($theme){
|
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$m = array();
|
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$info = array(
|
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'name' => $theme,
|
|
'description' => '',
|
|
'author' => array(),
|
|
'version' => '',
|
|
'minversion' => '',
|
|
'maxversion' => '',
|
|
'compat' => '',
|
|
'credits' => '',
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'maintainer' => array(),
|
|
'experimental' => false,
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'unsupported' => false
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|
);
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|
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if(file_exists("view/theme/$theme/experimental"))
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$info['experimental'] = true;
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|
|
|
if(file_exists("view/theme/$theme/unsupported"))
|
|
$info['unsupported'] = true;
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|
|
|
if (!is_file("view/theme/$theme/php/theme.php"))
|
|
return $info;
|
|
|
|
$f = file_get_contents("view/theme/$theme/php/theme.php");
|
|
$r = preg_match("|/\*.*\*/|msU", $f, $m);
|
|
|
|
if ($r){
|
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$ll = explode("\n", $m[0]);
|
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foreach( $ll as $l ) {
|
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$l = trim($l, "\t\n\r */");
|
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if ($l != ""){
|
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list($k, $v) = array_map("trim", explode(":", $l, 2));
|
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$k = strtolower($k);
|
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if ($k == 'author'){
|
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$r = preg_match("|([^<]+)<([^>]+)>|", $v, $m);
|
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if ($r) {
|
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$info['author'][] = array('name' => $m[1], 'link' => $m[2]);
|
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} else {
|
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$info['author'][] = array('name' => $v);
|
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}
|
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}
|
|
elseif ($k == 'maintainer'){
|
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$r = preg_match("|([^<]+)<([^>]+)>|", $v, $m);
|
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if ($r) {
|
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$info['maintainer'][] = array('name' => $m[1], 'link' => $m[2]);
|
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} else {
|
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$info['maintainer'][] = array('name' => $v);
|
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}
|
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} else {
|
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if (array_key_exists($k, $info)){
|
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$info[$k] = $v;
|
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}
|
|
}
|
|
}
|
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}
|
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}
|
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|
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return $info;
|
|
}
|
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|
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/**
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* @brief Returns the theme's screenshot.
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*
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* The screenshot is expected as view/theme/$theme/img/screenshot.[png|jpg].
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*
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* @param string $theme The name of the theme
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* @return string
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*/
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function get_theme_screenshot($theme) {
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$exts = array('.png', '.jpg');
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foreach($exts as $ext) {
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if(file_exists('view/theme/' . $theme . '/img/screenshot' . $ext))
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return(z_root() . '/view/theme/' . $theme . '/img/screenshot' . $ext);
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}
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return(z_root() . '/images/blank.png');
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}
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/**
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* @brief add CSS to \<head\>
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*
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* @param string $src
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* @param string $media change media attribute (default to 'screen')
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*/
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function head_add_css($src, $media = 'screen') {
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App::$css_sources[] = array($src, $media);
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}
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function head_remove_css($src, $media = 'screen') {
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$index = array_search(array($src, $media), App::$css_sources);
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if($index !== false)
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unset(App::$css_sources[$index]);
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}
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function head_get_css() {
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$str = '';
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$sources = App::$css_sources;
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if(count($sources)) {
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foreach($sources as $source)
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$str .= format_css_if_exists($source);
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}
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return $str;
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}
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function head_add_link($arr) {
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if($arr) {
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App::$linkrel[] = $arr;
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}
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}
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function head_get_links() {
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$str = '';
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$sources = App::$linkrel;
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if(count($sources)) {
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foreach($sources as $source) {
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if(is_array($source) && count($source)) {
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$str .= '<link';
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foreach($source as $k => $v) {
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$str .= ' ' . $k . '="' . $v . '"';
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}
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$str .= ' />' . "\r\n";
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}
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}
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}
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return $str;
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}
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function format_css_if_exists($source) {
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// script_path() returns https://yoursite.tld
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$path_prefix = script_path();
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$script = $source[0];
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if(strpos($script, '/') !== false) {
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// The script is a path relative to the server root
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$path = $script;
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// If the url starts with // then it's an absolute URL
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if(substr($script,0,2) === '//') {
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$path_prefix = '';
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}
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} else {
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// It's a file from the theme
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$path = '/' . theme_include($script);
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}
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if($path) {
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$qstring = ((parse_url($path, PHP_URL_QUERY)) ? '&' : '?') . 'v=' . STD_VERSION;
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return '<link rel="stylesheet" href="' . $path_prefix . $path . $qstring . '" type="text/css" media="' . $source[1] . '">' . "\r\n";
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}
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}
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/**
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* This basically calculates the baseurl. We have other functions to do that, but
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* there was an issue with script paths and mixed-content whose details are arcane
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* and perhaps lost in the message archives. The short answer is that we're ignoring
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* the URL which we are "supposed" to use, and generating script paths relative to
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* the URL which we are currently using; in order to ensure they are found and aren't
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* blocked due to mixed content issues.
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*
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* @return string
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*/
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function script_path() {
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if(x($_SERVER,'HTTPS') && $_SERVER['HTTPS'])
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$scheme = 'https';
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elseif(x($_SERVER,'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443))
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$scheme = 'https';
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elseif (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' || !empty($_SERVER['HTTP_X_FORWARDED_SSL']) && $_SERVER['HTTP_X_FORWARDED_SSL'] == 'on')
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$scheme = 'https';
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else
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$scheme = 'http';
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// Some proxy setups may require using http_host
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if(intval(App::$config['system']['script_path_use_http_host']))
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$server_var = 'HTTP_HOST';
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else
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$server_var = 'SERVER_NAME';
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if(x($_SERVER,$server_var)) {
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$hostname = $_SERVER[$server_var];
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}
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else {
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return z_root();
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}
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return $scheme . '://' . $hostname;
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}
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function head_add_js($src, $priority = 0) {
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if(! is_array(App::$js_sources[$priority]))
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App::$js_sources[$priority] = array();
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App::$js_sources[$priority][] = $src;
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}
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function head_remove_js($src, $priority = 0) {
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$index = array_search($src, App::$js_sources[$priority]);
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if($index !== false)
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unset(App::$js_sources[$priority][$index]);
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}
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/**
|
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* We should probably try to register main.js with a high priority, but currently
|
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* we handle it separately and put it at the end of the html head block in case
|
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* any other javascript is added outside the head_add_js construct.
|
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*
|
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* @return string
|
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*/
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function head_get_js() {
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|
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$str = '';
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if(App::$js_sources) {
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ksort(App::$js_sources,SORT_NUMERIC);
|
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foreach(App::$js_sources as $sources) {
|
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if(count($sources)) {
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foreach($sources as $source) {
|
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if($source === 'main.js')
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continue;
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$str .= format_js_if_exists($source);
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}
|
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}
|
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}
|
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}
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|
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return $str;
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}
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|
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function head_get_main_js() {
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$str = '';
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$sources = array('main.js');
|
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if(count($sources))
|
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foreach($sources as $source)
|
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$str .= format_js_if_exists($source,true);
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|
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return $str;
|
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}
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|
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function format_js_if_exists($source) {
|
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$path_prefix = script_path();
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|
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if(strpos($source,'/') !== false) {
|
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// The source is a known path on the system
|
|
$path = $source;
|
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// If the url starts with // then it's an absolute URL
|
|
if(substr($source,0,2) === '//') {
|
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$path_prefix = '';
|
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}
|
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}
|
|
else {
|
|
// It's a file from the theme
|
|
$path = '/' . theme_include($source);
|
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}
|
|
if($path) {
|
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$qstring = ((parse_url($path, PHP_URL_QUERY)) ? '&' : '?') . 'v=' . STD_VERSION;
|
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return '<script src="' . $path_prefix . $path . $qstring . '" ></script>' . "\r\n" ;
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}
|
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}
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|
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function theme_include($file, $root = '') {
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|
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// Make sure $root ends with a slash / if it's not blank
|
|
if($root !== '' && $root[strlen($root)-1] !== '/')
|
|
$root = $root . '/';
|
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|
|
$theme_info = App::$theme_info;
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|
|
if(array_key_exists('extends',$theme_info))
|
|
$parent = $theme_info['extends'];
|
|
else
|
|
$parent = 'NOPATH';
|
|
|
|
$theme = Zotlabs\Render\Theme::current();
|
|
$thname = $theme[0];
|
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|
|
$ext = substr($file,strrpos($file,'.')+1);
|
|
|
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$paths = array(
|
|
"{$root}view/theme/$thname/$ext/$file",
|
|
"{$root}view/theme/$parent/$ext/$file",
|
|
"{$root}view/site/$ext/$file",
|
|
"{$root}view/$ext/$file",
|
|
);
|
|
|
|
foreach($paths as $p) {
|
|
// strpos() is faster than strstr when checking if one string is in another (http://php.net/manual/en/function.strstr.php)
|
|
if(strpos($p,'NOPATH') !== false)
|
|
continue;
|
|
if(file_exists($p))
|
|
return $p;
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
|
|
function get_intltext_template($s, $root = '') {
|
|
|
|
$t = App::template_engine();
|
|
|
|
$template = $t->get_intltext_template($s, $root);
|
|
return $template;
|
|
}
|
|
|
|
|
|
function get_markup_template($s, $root = '') {
|
|
|
|
$t = App::template_engine();
|
|
$template = $t->get_markup_template($s, $root);
|
|
return $template;
|
|
}
|
|
|
|
/**
|
|
* @brief
|
|
*
|
|
* @param string $folder
|
|
* @return boolean|string
|
|
*/
|
|
function folder_exists($folder) {
|
|
// Get canonicalized absolute pathname
|
|
$path = realpath($folder);
|
|
|
|
// If it exist, check if it's a directory
|
|
return (($path !== false) && is_dir($path)) ? $path : false;
|
|
}
|