1 <?php

     2 /**

     3  * WP_Importer base class

     4  */

     5 class WP_Importer {

     6 	/**

     7 	 * Class Constructor

     8 	 *

     9 	 * @return void

    10 	 */

    11 	function __construct() {}

    12 

    13 	/**

    14 	 * Returns array with imported permalinks from WordPress database

    15 	 *

    16 	 * @param string $bid

    17 	 * @return array

    18 	 */

    19 	function get_imported_posts( $importer_name, $bid ) {

    20 		global $wpdb;

    21 

    22 		$hashtable = array();

    23 

    24 		$limit = 100;

    25 		$offset = 0;

    26 

    27 		// Grab all posts in chunks

    28 		do {

    29 			$meta_key = $importer_name . '_' . $bid . '_permalink';

    30 			$sql = $wpdb->prepare( "SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = '%s' LIMIT %d,%d", $meta_key, $offset, $limit );

    31 			$results = $wpdb->get_results( $sql );

    32 

    33 			// Increment offset

    34 			$offset = ( $limit + $offset );

    35 

    36 			if ( !empty( $results ) ) {

    37 				foreach ( $results as $r ) {

    38 					// Set permalinks into array

    39 					$hashtable[$r->meta_value] = intval( $r->post_id );

    40 				}

    41 			}

    42 		} while ( count( $results ) == $limit );

    43 

    44 		// unset to save memory

    45 		unset( $results, $r );

    46 

    47 		return $hashtable;

    48 	}

    49 

    50 	/**

    51 	 * Return count of imported permalinks from WordPress database

    52 	 *

    53 	 * @param string $bid

    54 	 * @return int

    55 	 */

    56 	function count_imported_posts( $importer_name, $bid ) {

    57 		global $wpdb;

    58 

    59 		$count = 0;

    60 

    61 		// Get count of permalinks

    62 		$meta_key = $importer_name . '_' . $bid . '_permalink';

    63 		$sql = $wpdb->prepare( "SELECT COUNT( post_id ) AS cnt FROM $wpdb->postmeta WHERE meta_key = '%s'", $meta_key );

    64 

    65 		$result = $wpdb->get_results( $sql );

    66 

    67 		if ( !empty( $result ) )

    68 			$count = intval( $result[0]->cnt );

    69 

    70 		// unset to save memory

    71 		unset( $results );

    72 

    73 		return $count;

    74 	}

    75 

    76 	/**

    77 	 * Set array with imported comments from WordPress database

    78 	 *

    79 	 * @param string $bid

    80 	 * @return array

    81 	 */

    82 	function get_imported_comments( $bid ) {

    83 		global $wpdb;

    84 

    85 		$hashtable = array();

    86 

    87 		$limit = 100;

    88 		$offset = 0;

    89 

    90 		// Grab all comments in chunks

    91 		do {

    92 			$sql = $wpdb->prepare( "SELECT comment_ID, comment_agent FROM $wpdb->comments LIMIT %d,%d", $offset, $limit );

    93 			$results = $wpdb->get_results( $sql );

    94 

    95 			// Increment offset

    96 			$offset = ( $limit + $offset );

    97 

    98 			if ( !empty( $results ) ) {

    99 				foreach ( $results as $r ) {

   100 					// Explode comment_agent key

   101 					list ( $ca_bid, $source_comment_id ) = explode( '-', $r->comment_agent );

   102 					$source_comment_id = intval( $source_comment_id );

   103 

   104 					// Check if this comment came from this blog

   105 					if ( $bid == $ca_bid ) {

   106 						$hashtable[$source_comment_id] = intval( $r->comment_ID );

   107 					}

   108 				}

   109 			}

   110 		} while ( count( $results ) == $limit );

   111 

   112 		// unset to save memory

   113 		unset( $results, $r );

   114 

   115 		return $hashtable;

   116 	}

   117 

   118 	function set_blog( $blog_id ) {

   119 		if ( is_numeric( $blog_id ) ) {

   120 			$blog_id = (int) $blog_id;

   121 		} else {

   122 			$blog = 'http://' . preg_replace( '#^https?://#', '', $blog_id );

   123 			if ( ( !$parsed = parse_url( $blog ) ) || empty( $parsed['host'] ) ) {

   124 				fwrite( STDERR, "Error: can not determine blog_id from $blog_id\n" );

   125 				exit();

   126 			}

   127 			if ( empty( $parsed['path'] ) )

   128 				$parsed['path'] = '/';

   129 			$blog = get_blog_details( array( 'domain' => $parsed['host'], 'path' => $parsed['path'] ) );

   130 			if ( !$blog ) {

   131 				fwrite( STDERR, "Error: Could not find blog\n" );

   132 				exit();

   133 			}

   134 			$blog_id = (int) $blog->blog_id;

   135 		}

   136 

   137 		if ( function_exists( 'is_multisite' ) ) {

   138 			if ( is_multisite() )

   139 				switch_to_blog( $blog_id );

   140 		}

   141 

   142 		return $blog_id;

   143 	}

   144 

   145 	function set_user( $user_id ) {

   146 		if ( is_numeric( $user_id ) ) {

   147 			$user_id = (int) $user_id;

   148 		} else {

   149 			$user_id = (int) username_exists( $user_id );

   150 		}

   151 

   152 		if ( !$user_id || !wp_set_current_user( $user_id ) ) {

   153 			fwrite( STDERR, "Error: can not find user\n" );

   154 			exit();

   155 		}

   156 

   157 		return $user_id;

   158 	}

   159 

   160 	/**

   161 	 * Sort by strlen, longest string first

   162 	 *

   163 	 * @param string $a

   164 	 * @param string $b

   165 	 * @return int

   166 	 */

   167 	function cmpr_strlen( $a, $b ) {

   168 		return strlen( $b ) - strlen( $a );

   169 	}

   170 

   171 	/**

   172 	 * GET URL

   173 	 *

   174 	 * @param string $url

   175 	 * @param string $username

   176 	 * @param string $password

   177 	 * @param bool $head

   178 	 * @return array

   179 	 */

   180 	function get_page( $url, $username = '', $password = '', $head = false ) {

   181 		// Increase the timeout

   182 		add_filter( 'http_request_timeout', array( $this, 'bump_request_timeout' ) );

   183 

   184 		$headers = array();

   185 		$args = array();

   186 		if ( true === $head )

   187 			$args['method'] = 'HEAD';

   188 		if ( !empty( $username ) && !empty( $password ) )

   189 			$headers['Authorization'] = 'Basic ' . base64_encode( "$username:$password" );

   190 

   191 		$args['headers'] = $headers;

   192 

   193 		return wp_safe_remote_request( $url, $args );

   194 	}

   195 

   196 	/**

   197 	 * Bump up the request timeout for http requests

   198 	 *

   199 	 * @param int $val

   200 	 * @return int

   201 	 */

   202 	function bump_request_timeout( $val ) {

   203 		return 60;

   204 	}

   205 

   206 	/**

   207 	 * Check if user has exceeded disk quota

   208 	 *

   209 	 * @return bool

   210 	 */

   211 	function is_user_over_quota() {

   212 		if ( function_exists( 'upload_is_user_over_quota' ) ) {

   213 			if ( upload_is_user_over_quota( 1 ) ) {

   214 				echo "Sorry, you have used your upload quota.\n";

   215 				return true;

   216 			}

   217 		}

   218 

   219 		return false;

   220 	}

   221 

   222 	/**

   223 	 * Replace newlines, tabs, and multiple spaces with a single space

   224 	 *

   225 	 * @param string $string

   226 	 * @return string

   227 	 */

   228 	function min_whitespace( $string ) {

   229 		return preg_replace( '|[\r\n\t ]+|', ' ', $string );

   230 	}

   231 

   232 	/**

   233 	 * Reset global variables that grow out of control during imports

   234 	 *

   235 	 * @return void

   236 	 */

   237 	function stop_the_insanity() {

   238 		global $wpdb, $wp_actions;

   239 		// Or define( 'WP_IMPORTING', true );

   240 		$wpdb->queries = array();

   241 		// Reset $wp_actions to keep it from growing out of control

   242 		$wp_actions = array();

   243 	}

   244 }

   245 

   246 /**

   247  * Returns value of command line params.

   248  * Exits when a required param is not set.

   249  *

   250  * @param string $param

   251  * @param bool $required

   252  * @return mixed

   253  */

   254 function get_cli_args( $param, $required = false ) {

   255 	$args = $_SERVER['argv'];

   256 

   257 	$out = array();

   258 

   259 	$last_arg = null;

   260 	$return = null;

   261 

   262 	$il = sizeof( $args );

   263 

   264 	for ( $i = 1, $il; $i < $il; $i++ ) {

   265 		if ( (bool) preg_match( "/^--(.+)/", $args[$i], $match ) ) {

   266 			$parts = explode( "=", $match[1] );

   267 			$key = preg_replace( "/[^a-z0-9]+/", "", $parts[0] );

   268 

   269 			if ( isset( $parts[1] ) ) {

   270 				$out[$key] = $parts[1];

   271 			} else {

   272 				$out[$key] = true;

   273 			}

   274 

   275 			$last_arg = $key;

   276 		} else if ( (bool) preg_match( "/^-([a-zA-Z0-9]+)/", $args[$i], $match ) ) {

   277 			for ( $j = 0, $jl = strlen( $match[1] ); $j < $jl; $j++ ) {

   278 				$key = $match[1]{$j};

   279 				$out[$key] = true;

   280 			}

   281 

   282 			$last_arg = $key;

   283 		} else if ( $last_arg !== null ) {

   284 			$out[$last_arg] = $args[$i];

   285 		}

   286 	}

   287 

   288 	// Check array for specified param

   289 	if ( isset( $out[$param] ) ) {

   290 		// Set return value

   291 		$return = $out[$param];

   292 	}

   293 

   294 	// Check for missing required param

   295 	if ( !isset( $out[$param] ) && $required ) {

   296 		// Display message and exit

   297 		echo "\"$param\" parameter is required but was not specified\n";

   298 		exit();

   299 	}

   300 

   301 	return $return;

   302 }