1 <?

     2 require_once "interface.Address_Book.php";

     3 

     4 class Address_Book_File implements Address_Book {

     5 	const RS = "\n";

     6 	const FS = "\t";

     7 

     8 	private $fh;

     9 	public function __construct($file) {

    10 		@mkdir(dirname($file));

    11 		$this->fh = fopen($file, "a+b");

    12 		if (!$this->fh) {

    13 			throw new Exception("Oooops, Problem mit $file");

    14 		}

    15 		flock($this->fh, LOCK_EX);

    16 		$stat = fstat($this->fh);

    17 		if ($stat['size'] == 0) {

    18 			fputs($this->fh, join(self::FS, array("Hans Hanson", "0815", "hans@hanson.de"))

    19 				. self::RS);

    20 		}

    21 		flock($this->fh, LOCK_SH);

    22 		fseek($this->fh, 0, SEEK_SET);

    23 	}

    24 

    25 	public function get_all_entries() {

    26 		$entries = array();

    27 		fseek($this->fh, 0, SEEK_SET);

    28 		while($line = stream_get_line($this->fh, 0, self::RS)) {

    29 			if ($line === FALSE) break;

    30 			$entries[] = explode(self::FS, $line);

    31 		}

    32 		return $entries;

    33 	}

    34 

    35 	public function add_entry($entry) {

    36 		$fields = array('name', 'tel', 'mail');

    37 		$new = array();

    38 		foreach($fields as $key) {

    39 			if (!isset($entry[$key])) return;

    40 			$new[$key] = trim($entry[$key]);

    41 			$new[$key] = preg_replace('/['.self::RS.self::FS.' ]+/', ' ', $new[$key]);

    42 			if (empty($new[$key])) return;

    43 		}

    44 

    45 		flock($this->fh, LOCK_EX);

    46 		fputs($this->fh, join(self::FS, $new) . self::RS);

    47 		flock($this->fh, LOCK_UN);

    48 	}

    49 

    50 	public function search_entries($pattern) {

    51 		$pattern = trim($pattern);

    52 		if (empty($pattern)) return array();

    53 		fseek($this->fh, 0, SEEK_SET);

    54 		$pattern = preg_replace('|/|', '\/', $pattern);

    55 		$entries = array();

    56 		while ($line = stream_get_line($this->fh, 0, self::RS)) {

    57 			if ($line === FALSE) break;

    58 			if (!preg_match("/$pattern/i", $line)) continue;

    59 			$entry = explode(self::FS, $line);

    60 			$entries[] = array('name' => $entry[0],

    61 					   'tel' => $entry[1],

    62 					   'mail' => $entry[2]);

    63 		}

    64 		return $entries;

    65 	}

    66 

    67 	public function delete_entries($ids) { }

    68 }

    69 

    70 ?>