/**
* Prints useful debug information for the plugin.
*
* @author Nevma (info@nevma.gr)
*
* @param bool $echo Whether to echo the result or return it as a string.
*
* @return Nothing really!
*/
function adaptive_images_debug_general_info($echo = true)
{
$options = get_option('adaptive-images');
$icons = array('true' => '✔', 'false' => '✖', 'debug' => '❖');
// PHP GD image library debug info.
$gd_extenstion_installed = adaptive_images_plugin_is_gd_extension_installed();
$message = '<p>' . ($gd_extenstion_installed ? $icons['true'] : $icons['false']) . ' PHP GD library is ' . ($gd_extenstion_installed ? '' : 'not ') . ' installed.' . '</p>';
// Image cache directory debug info.
$cache_path = adaptive_images_plugin_get_cahe_directory_path();
$cache_path_exists = file_exists($cache_path);
$message .= '<p>' . ($cache_path_exists ? $icons['true'] : $icons['false']) . ' Image cache directory has ' . ($cache_path_exists ? '' : 'not ') . 'been created.' . '</p>' . ($cache_path_exists ? '<blockquote><p>' . '<code>' . $cache_path . ' => ' . adaptive_images_plugin_file_permissions($cache_path) . '</code>' . '</p></blockquote>' : '<blockquote><p>' . (!$cache_path_exists && is_writable(dirname($cache_path)) ? 'But this is probably because the cache has not been accessed yet. <br />' . 'After accessing your website from a mobile device the directory should be automatically created.' . '<br /><br />' : 'It seems that the directory is not writeable. This is probably a filesystem permissions issue. <br />' . ' Consider adding manually the image cache directory: "/wp-content/cache/adaptive-images".' . '<br /><br />') . '<code>' . dirname($cache_path) . ' => ' . adaptive_images_plugin_file_permissions(dirname($cache_path)) . '</code>' . '</p></blockquote>');
// Check .htaccess file availability
$htaccess = adaptive_images_plugin_get_htaccess_file_path();
$htaccess_ok = adaptive_images_actions_is_htaccess_ok();
$htaccess_writeable = adaptive_images_plugin_is_htaccess_writeable();
$message .= '<p>' . ($htaccess_ok ? $icons['true'] : $icons['false']) . ' Installation .htaccess file is ' . ($htaccess_ok ? 'setup OK.' : 'not properly setup.') . '</p>' . ($htaccess_writeable ? '<blockquote><p>' . '<code>' . $htaccess . ' => ' . adaptive_images_plugin_file_permissions($htaccess) . '</code>' . '</p></blockquote>' : '<blockquote><p>' . 'The .htaccess file is not writeable so it might have not been updated.' . '<br /><br />' . '<code>' . $htaccess . ' => ' . adaptive_images_plugin_file_permissions($htaccess) . '</code>' . '</p></blockquote>');
// Image cache settings dump.
$message .= '<p>' . $icons['debug'] . ' Adaptive images settings dump:</p>';
$message .= '<blockquote><pre>';
ob_start();
var_dump($options);
$message .= ob_get_clean();
$message .= '</pre></blockquote>';
// Echo debug info or return it.
if ($echo) {
echo $message;
} else {
return $message;
}
}
/**
* Performs actions related to upgrading from version 0.2.08 because from that version and on major code and
* settings changes took place.
*
* @author Nevma (info@nevma.gr)
*
* @return void
*/
function adaptive_images_upgrade_action_upgraded_from_v0208()
{
// Try to remove old htaccess entry.
$htaccess = adaptive_images_plugin_get_htaccess_file_path();
$htaccess_available = adaptive_images_plugin_is_htaccess_writeable();
if ($htaccess_available) {
$htaccess_old_contents = file_get_contents($htaccess);
$htaccess_new_contents = preg_replace('/# Adaptive Images.*# END Adaptive Images\\n/s', '', $htaccess_old_contents);
@file_put_contents($htaccess, $htaccess_new_contents);
}
// Try to remove old cache directory.
$old_cache_path = realpath(dirname($_SERVER['SCRIPT_FILENAME']) . '/../wp-content/') . '/cache-ai/';
adaptive_images_actions_rmdir_recursive($old_cache_path);
// Try to remove old options.
delete_option('wprxr_include_paths');
delete_option('wprxr_ai_config');
}
/**
* Returns whether the installation .htaccess file is available, writeable and that it has been updated with the
* contents that are necessary for the plugin to work.
*
* @author Nevma (info@nevma.gr)
*
* @return void Nothing really!
*/
function adaptive_images_actions_is_htaccess_ok()
{
// If options have not been saved yet then do not check.
$options = get_option('adaptive-images');
if (!$options) {
return false;
}
// Do the check and inform user.
$htaccess = adaptive_images_plugin_get_htaccess_file_path();
$htaccess_writeable = adaptive_images_plugin_is_htaccess_writeable();
$htaccess_contents = file_get_contents($htaccess);
$htaccess_rewrite_block_regexp = '/# BEGIN Adaptive Images.*# END Adaptive Images\\n/s';
$htaccess_contents_updated = preg_match($htaccess_rewrite_block_regexp, $htaccess_contents);
return $htaccess_writeable && $htaccess_contents_updated;
}
