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<?php |
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/* |
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Copyright (c) 2003, 2005, 2006, 2009 Danilo Segan <[email protected]>. |
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This file is part of PHP-gettext. |
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PHP-gettext is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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PHP-gettext is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with PHP-gettext; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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// Simple class to wrap file streams, string streams, etc. |
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// seek is essential, and it should be byte stream |
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class StreamReader { |
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// should return a string [FIXME: perhaps return array of bytes?] |
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function read($bytes) { |
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return false; |
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} |
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// should return new position |
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function seekto($position) { |
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return false; |
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} |
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// returns current position |
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function currentpos() { |
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return false; |
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} |
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// returns length of entire stream (limit for seekto()s) |
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function length() { |
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return false; |
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} |
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}; |
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class StringReader { |
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var $_pos; |
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var $_str; |
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function StringReader($str = '') { |
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$this->_str = $str; |
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$this->_pos = 0; |
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} |
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function read($bytes) { |
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$data = substr($this->_str, $this->_pos, $bytes); |
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$this->_pos += $bytes; |
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if (strlen($this->_str) < $this->_pos) { |
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$this->_pos = strlen($this->_str); |
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} |
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return $data; |
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} |
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function seekto($pos) { |
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$this->_pos = $pos; |
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if (strlen($this->_str) < $this->_pos) { |
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$this->_pos = strlen($this->_str); |
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} |
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return $this->_pos; |
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} |
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function currentpos() { |
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return $this->_pos; |
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} |
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function length() { |
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return strlen($this->_str); |
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} |
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}; |
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class FileReader { |
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var $_pos; |
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var $_fd; |
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var $_length; |
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function FileReader($filename) { |
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if (file_exists($filename)) { |
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$this->_length = filesize($filename); |
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$this->_pos = 0; |
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$this->_fd = fopen($filename, 'rb'); |
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if (!$this->_fd) { |
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$this->error = 3; // Cannot read file, probably permissions |
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return false; |
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} |
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} else { |
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$this->error = 2; // File doesn't exist |
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return false; |
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} |
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} |
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function read($bytes) { |
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if ($bytes) { |
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fseek($this->_fd, $this->_pos); |
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// PHP 5.1.1 does not read more than 8192 bytes in one fread() |
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// the discussions at PHP Bugs suggest it's the intended behaviour |
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$data = ''; |
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while ($bytes > 0) { |
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$chunk = fread($this->_fd, $bytes); |
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$data .= $chunk; |
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$bytes -= strlen($chunk); |
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} |
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$this->_pos = ftell($this->_fd); |
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return $data; |
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} else { |
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return ''; |
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} |
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} |
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function seekto($pos) { |
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fseek($this->_fd, $pos); |
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$this->_pos = ftell($this->_fd); |
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return $this->_pos; |
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} |
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function currentpos() { |
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return $this->_pos; |
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} |
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function length() { |
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return $this->_length; |
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} |
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function close() { |
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fclose($this->_fd); |
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} |
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}; |
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// Preloads entire file in memory first, then creates a StringReader |
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// over it (it assumes knowledge of StringReader internals) |
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class CachedFileReader extends StringReader { |
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function CachedFileReader($filename) { |
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if (file_exists($filename)) { |
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$length = filesize($filename); |
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$fd = fopen($filename, 'rb'); |
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if (!$fd) { |
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$this->error = 3; // Cannot read file, probably permissions |
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return false; |
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} |
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$this->_str = fread($fd, $length); |
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fclose($fd); |
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} else { |
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$this->error = 2; // File doesn't exist |
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return false; |
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} |
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} |
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}; |
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171
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?> |
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172
|
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codysnider /
tt-rss
Loading history...
Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.