As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
<?php
/**
* WordPress Administration Importer API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* Retrieves the list of importers.
*
* @since 2.0.0
*
* @global array $wp_importers
* @return array
*/
function get_importers() {
global $wp_importers;
if ( is_array( $wp_importers ) ) {
uasort( $wp_importers, '_usort_by_first_member' );
}
return $wp_importers;
}
/**
* Sorts a multidimensional array by first member of each top level member.
*
* Used by uasort() as a callback, should not be used directly.
*
* @since 2.9.0
* @access private
*
* @param array $a
* @param array $b
* @return int
*/
function _usort_by_first_member( $a, $b ) {
return strnatcasecmp( $a[0], $b[0] );
}
/**
* Registers importer for WordPress.
*
* @since 2.0.0
*
* @global array $wp_importers
*
* @param string $id Importer tag. Used to uniquely identify importer.
* @param string $name Importer name and title.
* @param string $description Importer description.
* @param callable $callback Callback to run.
* @return void|WP_Error Void on success. WP_Error when $callback is WP_Error.
*/
function register_importer( $id, $name, $description, $callback ) {
global $wp_importers;
if ( is_wp_error( $callback ) ) {
return $callback;
}
$wp_importers[ $id ] = array( $name, $description, $callback );
}
/**
* Cleanup importer.
*
* Removes attachment based on ID.
*
* @since 2.0.0
*
* @param string $id Importer ID.
*/
function wp_import_cleanup( $id ) {
wp_delete_attachment( $id );
}
/**
* Handles importer uploading and adds attachment.
*
* @since 2.0.0
*
* @return array Uploaded file's details on success, error message on failure.
*/
function wp_import_handle_upload() {
if ( ! isset( $_FILES['import'] ) ) {
return array(
'error' => sprintf(
/* translators: 1: php.ini, 2: post_max_size, 3: upload_max_filesize */
__( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your %1$s file or by %2$s being defined as smaller than %3$s in %1$s.' ),
'php.ini',
'post_max_size',
'upload_max_filesize'
),
);
}
$overrides = array(
'test_form' => false,
'test_type' => false,
);
$_FILES['import']['name'] .= '.txt';
$upload = wp_handle_upload( $_FILES['import'], $overrides );
if ( isset( $upload['error'] ) ) {
return $upload;
}
// Construct the attachment array.
$attachment = array(
'post_title' => wp_basename( $upload['file'] ),
'post_content' => $upload['url'],
'post_mime_type' => $upload['type'],
'guid' => $upload['url'],
'context' => 'import',
'post_status' => 'private',
);
// Save the data.
$id = wp_insert_attachment( $attachment, $upload['file'] );
/*
* Schedule a cleanup for one day from now in case of failed
* import or missing wp_import_cleanup() call.
*/
wp_schedule_single_event( time() + DAY_IN_SECONDS, 'importer_scheduled_cleanup', array( $id ) );
return array(
'file' => $upload['file'],
'id' => $id,
);
}
/**
* Returns a list from WordPress.org of popular importer plugins.
*
* @since 3.5.0
*
* @return array Importers with metadata for each.
*/
function wp_get_popular_importers() {
$locale = get_user_locale();
$cache_key = 'popular_importers_' . md5( $locale . wp_get_wp_version() );
$popular_importers = get_site_transient( $cache_key );
if ( ! $popular_importers ) {
$url = add_query_arg(
array(
'locale' => $locale,
'version' => wp_get_wp_version(),
),
'http://api.wordpress.org/core/importers/1.1/'
);
$options = array( 'user-agent' => 'WordPress/' . wp_get_wp_version() . '; ' . home_url( '/' ) );
if ( wp_http_supports( array( 'ssl' ) ) ) {
$url = set_url_scheme( $url, 'https' );
}
$response = wp_remote_get( $url, $options );
$popular_importers = json_decode( wp_remote_retrieve_body( $response ), true );
if ( is_array( $popular_importers ) ) {
set_site_transient( $cache_key, $popular_importers, 2 * DAY_IN_SECONDS );
} else {
$popular_importers = false;
}
}
if ( is_array( $popular_importers ) ) {
// If the data was received as translated, return it as-is.
if ( $popular_importers['translated'] ) {
return $popular_importers['importers'];
}
foreach ( $popular_importers['importers'] as &$importer ) {
// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText
$importer['description'] = translate( $importer['description'] );
if ( 'WordPress' !== $importer['name'] ) {
// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText
$importer['name'] = translate( $importer['name'] );
}
}
return $popular_importers['importers'];
}
return array(
// slug => name, description, plugin slug, and register_importer() slug.
'blogger' => array(
'name' => __( 'Blogger' ),
'description' => __( 'Import posts, comments, and users from a Blogger blog.' ),
'plugin-slug' => 'blogger-importer',
'importer-id' => 'blogger',
),
'wpcat2tag' => array(
'name' => __( 'Categories and Tags Converter' ),
'description' => __( 'Convert existing categories to tags or tags to categories, selectively.' ),
'plugin-slug' => 'wpcat2tag-importer',
'importer-id' => 'wp-cat2tag',
),
'livejournal' => array(
'name' => __( 'LiveJournal' ),
'description' => __( 'Import posts from LiveJournal using their API.' ),
'plugin-slug' => 'livejournal-importer',
'importer-id' => 'livejournal',
),
'movabletype' => array(
'name' => __( 'Movable Type and TypePad' ),
'description' => __( 'Import posts and comments from a Movable Type or TypePad blog.' ),
'plugin-slug' => 'movabletype-importer',
'importer-id' => 'mt',
),
'rss' => array(
'name' => __( 'RSS' ),
'description' => __( 'Import posts from an RSS feed.' ),
'plugin-slug' => 'rss-importer',
'importer-id' => 'rss',
),
'tumblr' => array(
'name' => __( 'Tumblr' ),
'description' => __( 'Import posts & media from Tumblr using their API.' ),
'plugin-slug' => 'tumblr-importer',
'importer-id' => 'tumblr',
),
'wordpress' => array(
'name' => 'WordPress',
'description' => __( 'Import posts, pages, comments, custom fields, categories, and tags from a WordPress export file.' ),
'plugin-slug' => 'wordpress-importer',
'importer-id' => 'wordpress',
),
);
}