/**
* Imports snippets from an XML file
*
* @since 2.0
*
* @uses save_snippet() to add the snippets to the database
*
* @param string $file The path to the XML file to import
* @param bool|null $multisite Import into network-wide table or site-wide table?
* @return array|bool An array of imported snippet IDs on success, false on failure
*/
function import_snippets($file, $multisite = null)
{
if (!file_exists($file) || !is_file($file)) {
return false;
}
$dom = new DOMDocument('1.0', get_bloginfo('charset'));
$dom->load($file);
$snippets_xml = $dom->getElementsByTagName('snippet');
$fields = array('name', 'description', 'code', 'tags', 'scope');
$exported_snippets = array();
/* Loop through all snippets */
/** @var DOMElement $snippet_xml */
foreach ($snippets_xml as $snippet_xml) {
$snippet = new Snippet();
$snippet->network = $multisite;
/* Build a snippet object by looping through the field names */
foreach ($fields as $field_name) {
/* Fetch the field element from the document */
$field = $snippet_xml->getElementsByTagName($field_name)->item(0);
/* If the field element exists, add it to the snippet object */
if (isset($field->nodeValue)) {
$snippet->{$field_name} = $field->nodeValue;
}
}
/* Get scope from attribute */
$scope = $snippet_xml->getAttribute('scope');
if (!empty($scope)) {
$snippet->scope = $scope;
}
/* Save the snippet and increase the counter if successful */
if ($snippet_id = save_snippet($snippet)) {
$exported_snippets[] = $snippet_id;
}
}
do_action('code_snippets/import', $dom, $multisite);
return $exported_snippets;
}
/**
* Save the posted snippet data to the database and redirect
*/
private function save_posted_snippet()
{
/* Build snippet object from fields with 'snippet_' prefix */
$snippet = new Snippet();
foreach ($_POST as $field => $value) {
if ('snippet_' === substr($field, 0, 8)) {
/* Remove 'snippet_' prefix from field name */
$field = substr($field, 8);
$snippet->{$field} = stripslashes($value);
}
}
/* Activate or deactivate the snippet before saving if we clicked the button */
// Shared network snippets cannot be network activated
if (isset($_POST['snippet_sharing']) && 'on' === $_POST['snippet_sharing']) {
$snippet->active = 0;
unset($_POST['save_snippet_activate'], $_POST['save_snippet_deactivate']);
} elseif (isset($_POST['save_snippet_activate'])) {
$snippet->active = 1;
} elseif (isset($_POST['save_snippet_deactivate'])) {
$snippet->active = 0;
}
/* Deactivate snippet if code contains errors */
if ($snippet->active) {
if ($code_error = $this->validate_code($snippet)) {
$snippet->active = 0;
}
}
/* Save the snippet to the database */
$snippet_id = save_snippet($snippet);
/* Update the shared network snippets if necessary */
if ($snippet_id && get_current_screen()->in_admin('network')) {
if (isset($_POST['snippet_sharing']) && 'on' === $_POST['snippet_sharing']) {
$shared_snippets = get_site_option('shared_network_snippets', array());
/* Add the snippet ID to the array if it isn't already */
if (!in_array($snippet_id, $shared_snippets)) {
$shared_snippets[] = $snippet_id;
update_site_option('shared_network_snippets', array_values($shared_snippets));
}
} else {
$this->unshare_network_snippet($snippet_id);
}
}
/* If the saved snippet ID is invalid, display an error message */
if (!$snippet_id || $snippet_id < 1) {
/* An error occurred */
wp_redirect(add_query_arg('result', 'save-error', code_snippets_get_menu_url('add')));
exit;
}
/* Display message if a parse error occurred */
if (isset($code_error) && $code_error) {
wp_redirect(add_query_arg(array('id' => $snippet_id, 'result' => 'code-error'), code_snippets_get_menu_url('edit')));
exit;
}
/* Set the result depending on if the snippet was just added */
$result = isset($_POST['snippet_id']) ? 'updated' : 'added';
/* Append a suffix if the snippet was activated or deactivated */
if (isset($_POST['save_snippet_activate'])) {
$result .= '-and-activated';
} elseif (isset($_POST['save_snippet_deactivate'])) {
$result .= '-and-deactivated';
}
/* Redirect to edit snippet page */
wp_redirect(add_query_arg(array('id' => $snippet_id, 'result' => $result), code_snippets_get_menu_url('edit')));
exit;
}
/**
* Save the posted snippet to the database
* @uses wp_redirect() to pass the results to the page
* @uses save_snippet() to save the snippet to the database
*/
private function save_posted_snippet()
{
/* Make sure the nonce validates before we do any snippet ops */
if (!isset($_REQUEST['_wpnonce']) || !wp_verify_nonce($_REQUEST['_wpnonce'], 'save_snippet')) {
return;
}
/* Save the snippet if one has been submitted */
if (isset($_POST['save_snippet']) || isset($_POST['save_snippet_activate']) || isset($_POST['save_snippet_deactivate'])) {
/* Build snippet object from fields with 'snippet_' prefix */
$snippet = new Snippet();
foreach ($_POST as $field => $value) {
if ('snippet_' === substr($field, 0, 8)) {
/* Remove 'snippet_' prefix from field name */
$field = substr($field, 8);
$snippet->{$field} = stripslashes($value);
}
}
/* Activate or deactivate the snippet before saving if we clicked the button */
// Shared network snippets cannot be network activated
if (isset($_POST['snippet_sharing']) && 'on' === $_POST['snippet_sharing']) {
$snippet->active = 0;
unset($_POST['save_snippet_activate'], $_POST['save_snippet_deactivate']);
} elseif (isset($_POST['save_snippet_activate'])) {
$snippet->active = 1;
} elseif (isset($_POST['save_snippet_deactivate'])) {
$snippet->active = 0;
}
/* Save the snippet to the database */
$snippet_id = save_snippet($snippet);
/* Update the shared network snippets if necessary */
if ($snippet_id && get_current_screen()->in_admin('network')) {
$shared_snippets = get_site_option('shared_network_snippets', array());
if (isset($_POST['snippet_sharing']) && 'on' === $_POST['snippet_sharing']) {
/* Add the snippet ID to the array if it isn't already */
if (!in_array($snippet_id, $shared_snippets)) {
$shared_snippets[] = $snippet_id;
update_site_option('shared_network_snippets', array_values($shared_snippets));
}
} elseif (in_array($snippet_id, $shared_snippets)) {
/* Remove the snippet ID from the array */
$shared_snippets = array_diff($shared_snippets, array($snippet_id));
update_site_option('shared_network_snippets', array_values($shared_snippets));
/* Deactivate on all sites */
global $wpdb;
if ($sites = $wpdb->get_col("SELECT blog_id FROM {$wpdb->blogs}")) {
foreach ($sites as $site) {
switch_to_blog($site);
$active_shared_snippets = get_option('active_shared_network_snippets');
if (is_array($active_shared_snippets)) {
$active_shared_snippets = array_diff($active_shared_snippets, array($snippet_id));
update_option('active_shared_network_snippets', $active_shared_snippets);
}
}
restore_current_blog();
}
}
}
/* If the saved snippet ID is invalid, display an error message */
if (!$snippet_id || $snippet_id < 1) {
/* An error occurred */
wp_redirect(add_query_arg('result', 'error', code_snippets_get_menu_url('add')));
exit;
}
/* Set the result depending on if the snippet was just added */
$result = isset($_POST['snippet_id']) ? 'updated' : 'added';
/* Append a suffix if the snippet was activated or deactivated */
if (isset($_POST['save_snippet_activate'])) {
$result .= '-and-activated';
} elseif (isset($_POST['save_snippet_deactivate'])) {
$result .= '-and-deactivated';
}
/* Redirect to edit snippet page */
wp_redirect(add_query_arg(array('id' => $snippet_id, 'result' => $result), code_snippets_get_menu_url('edit')));
exit;
} elseif (isset($_POST['snippet_id'], $_POST['delete_snippet'])) {
delete_snippet($_POST['snippet_id']);
wp_redirect(add_query_arg('result', 'delete', code_snippets_get_menu_url('manage')));
exit;
} elseif (isset($_POST['snippet_id'], $_POST['export_snippet'])) {
export_snippets($_POST['snippet_id']);
}
}
/**
* Loads the help tabs for the Edit Snippets page
*
* @since 1.0
* @access private
* @uses wp_redirect To pass the results to the page
*/
function code_snippets_load_single_menu()
{
/* Make sure the user has permission to be here */
if (!current_user_can(get_snippets_cap())) {
wp_die(__('You are not authorized to access this page.', 'code-snippets'));
}
/* Create the snippet tables if they don't exist */
create_code_snippets_tables();
/* Load the screen help tabs */
require plugin_dir_path(__FILE__) . 'admin-help.php';
/* Enqueue the code editor and other scripts and styles */
add_action('admin_enqueue_scripts', 'code_snippets_enqueue_codemirror', 9);
/* Don't allow visiting the edit snippet page without a valid ID */
if (code_snippets_get_menu_slug('edit') === $_REQUEST['page']) {
if (!isset($_REQUEST['id']) || 0 == $_REQUEST['id']) {
wp_redirect(code_snippets_get_menu_url('add'));
exit;
}
}
/* Make sure the nonce validates before we do any snippet ops */
if (!isset($_REQUEST['_wpnonce']) || !wp_verify_nonce($_REQUEST['_wpnonce'], 'save_snippet')) {
return;
}
/* Save the snippet if one has been submitted */
if (isset($_POST['save_snippet']) || isset($_POST['save_snippet_activate']) || isset($_POST['save_snippet_deactivate'])) {
/* Activate or deactivate the snippet before saving if we clicked the button */
if (isset($_POST['save_snippet_activate'])) {
$_POST['snippet_active'] = 1;
} elseif (isset($_POST['save_snippet_deactivate'])) {
$_POST['snippet_active'] = 0;
}
/* Save the snippet to the database */
$result = save_snippet(stripslashes_deep($_POST));
/* Build the status message and redirect */
$query_args = array();
if ($result && isset($_POST['save_snippet_activate'])) {
/* Snippet was activated addition to saving*/
$query_args['activated'] = true;
} elseif ($result && isset($_POST['save_snippet_deactivate'])) {
/* Snippet was deactivated addition to saving*/
$query_args['deactivated'] = true;
}
if (!$result || $result < 1) {
/* An error occurred */
$query_args['invalid'] = true;
} elseif (isset($_POST['snippet_id'])) {
/* Existing snippet was updated */
$query_args['id'] = $result;
$query_args['updated'] = true;
} else {
/* New snippet was added */
$query_args['id'] = $result;
$query_args['added'] = true;
}
/* Redirect to edit snippet page */
wp_redirect(add_query_arg($query_args, code_snippets_get_menu_url('edit')));
} elseif (isset($_POST['snippet_id'], $_POST['delete_snippet'])) {
delete_snippet($_POST['snippet_id']);
wp_redirect(add_query_arg('delete', true, code_snippets_get_menu_url('manage')));
} elseif (isset($_POST['snippet_id'], $_POST['export_snippet'])) {
export_snippets($_POST['snippet_id']);
}
}
/**
* Imports snippets from an XML file
*
* @since 2.0
* @uses save_snippet() To add the snippets to the database
*
* @param string $file The path to the XML file to import
* @param boolean|null $multisite Import into network-wide table or site-wide table?
* @return integer|boolean The number of snippets imported on success, false on failure
*/
function import_snippets($file, $multisite = null)
{
if (!file_exists($file) || !is_file($file)) {
return false;
}
$dom = new DOMDocument('1.0', get_bloginfo('charset'));
$dom->load($file);
$snippets_xml = $dom->getElementsByTagName('snippet');
$fields = array('name', 'description', 'code', 'tags', 'scope');
$count = 0;
/* Loop through all snippets */
foreach ($snippets_xml as $snippet_xml) {
$snippet = new stdClass();
/* Build a snippet object by looping through the field names */
foreach ($fields as $field_name) {
/* Fetch the field element from the document */
$field = $snippet_xml->getElementsByTagName($field_name)->item(0);
/* If the field element exists, add it to the snippet object */
if (isset($field->nodeValue)) {
$snippet->{$field_name} = $field->nodeValue;
}
}
/* Save the snippet and increase the counter if successful */
if (save_snippet($snippet, $multisite)) {
$count += 1;
}
}
do_action('code_snippets/import', $dom, $multisite);
return $count;
}