/lib/classes/Swift/CharacterStream/NgCharacterStream.php
PHP | 262 lines | 130 code | 26 blank | 106 comment | 15 complexity | c3c95ea0a4ea5df03844e5a415c6dacf MD5 | raw file
Possible License(s): LGPL-3.0, LGPL-2.1
- <?php
- /*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- /**
- * A CharacterStream implementation which stores characters in an internal array.
- *
- * @author Xavier De Cock <xdecock@gmail.com>
- */
- class Swift_CharacterStream_NgCharacterStream implements Swift_CharacterStream
- {
- /**
- * The char reader (lazy-loaded) for the current charset.
- *
- * @var Swift_CharacterReader
- */
- private $charReader;
- /**
- * A factory for creating CharacterReader instances.
- *
- * @var Swift_CharacterReaderFactory
- */
- private $charReaderFactory;
- /**
- * The character set this stream is using.
- *
- * @var string
- */
- private $charset;
- /**
- * The data's stored as-is.
- *
- * @var string
- */
- private $datas = '';
- /**
- * Number of bytes in the stream.
- *
- * @var int
- */
- private $datasSize = 0;
- /**
- * Map.
- *
- * @var mixed
- */
- private $map;
- /**
- * Map Type.
- *
- * @var int
- */
- private $mapType = 0;
- /**
- * Number of characters in the stream.
- *
- * @var int
- */
- private $charCount = 0;
- /**
- * Position in the stream.
- *
- * @var int
- */
- private $currentPos = 0;
- /**
- * Constructor.
- *
- * @param string $charset
- */
- public function __construct(Swift_CharacterReaderFactory $factory, $charset)
- {
- $this->setCharacterReaderFactory($factory);
- $this->setCharacterSet($charset);
- }
- /* -- Changing parameters of the stream -- */
- /**
- * Set the character set used in this CharacterStream.
- *
- * @param string $charset
- */
- public function setCharacterSet($charset)
- {
- $this->charset = $charset;
- $this->charReader = null;
- $this->mapType = 0;
- }
- /**
- * Set the CharacterReaderFactory for multi charset support.
- */
- public function setCharacterReaderFactory(Swift_CharacterReaderFactory $factory)
- {
- $this->charReaderFactory = $factory;
- }
- /**
- * @see Swift_CharacterStream::flushContents()
- */
- public function flushContents()
- {
- $this->datas = null;
- $this->map = null;
- $this->charCount = 0;
- $this->currentPos = 0;
- $this->datasSize = 0;
- }
- /**
- * @see Swift_CharacterStream::importByteStream()
- */
- public function importByteStream(Swift_OutputByteStream $os)
- {
- $this->flushContents();
- $blocks = 512;
- $os->setReadPointer(0);
- while (false !== ($read = $os->read($blocks))) {
- $this->write($read);
- }
- }
- /**
- * @see Swift_CharacterStream::importString()
- *
- * @param string $string
- */
- public function importString($string)
- {
- $this->flushContents();
- $this->write($string);
- }
- /**
- * @see Swift_CharacterStream::read()
- *
- * @param int $length
- *
- * @return string
- */
- public function read($length)
- {
- if ($this->currentPos >= $this->charCount) {
- return false;
- }
- $ret = false;
- $length = ($this->currentPos + $length > $this->charCount) ? $this->charCount - $this->currentPos : $length;
- switch ($this->mapType) {
- case Swift_CharacterReader::MAP_TYPE_FIXED_LEN:
- $len = $length * $this->map;
- $ret = substr($this->datas,
- $this->currentPos * $this->map,
- $len);
- $this->currentPos += $length;
- break;
- case Swift_CharacterReader::MAP_TYPE_INVALID:
- $ret = '';
- for (; $this->currentPos < $length; ++$this->currentPos) {
- if (isset($this->map[$this->currentPos])) {
- $ret .= '?';
- } else {
- $ret .= $this->datas[$this->currentPos];
- }
- }
- break;
- case Swift_CharacterReader::MAP_TYPE_POSITIONS:
- $end = $this->currentPos + $length;
- $end = $end > $this->charCount ? $this->charCount : $end;
- $ret = '';
- $start = 0;
- if ($this->currentPos > 0) {
- $start = $this->map['p'][$this->currentPos - 1];
- }
- $to = $start;
- for (; $this->currentPos < $end; ++$this->currentPos) {
- if (isset($this->map['i'][$this->currentPos])) {
- $ret .= substr($this->datas, $start, $to - $start).'?';
- $start = $this->map['p'][$this->currentPos];
- } else {
- $to = $this->map['p'][$this->currentPos];
- }
- }
- $ret .= substr($this->datas, $start, $to - $start);
- break;
- }
- return $ret;
- }
- /**
- * @see Swift_CharacterStream::readBytes()
- *
- * @param int $length
- *
- * @return int[]
- */
- public function readBytes($length)
- {
- $read = $this->read($length);
- if (false !== $read) {
- $ret = array_map('ord', str_split($read, 1));
- return $ret;
- }
- return false;
- }
- /**
- * @see Swift_CharacterStream::setPointer()
- *
- * @param int $charOffset
- */
- public function setPointer($charOffset)
- {
- if ($this->charCount < $charOffset) {
- $charOffset = $this->charCount;
- }
- $this->currentPos = $charOffset;
- }
- /**
- * @see Swift_CharacterStream::write()
- *
- * @param string $chars
- */
- public function write($chars)
- {
- if (!isset($this->charReader)) {
- $this->charReader = $this->charReaderFactory->getReaderFor(
- $this->charset);
- $this->map = [];
- $this->mapType = $this->charReader->getMapType();
- }
- $ignored = '';
- $this->datas .= $chars;
- $this->charCount += $this->charReader->getCharPositions(substr($this->datas, $this->datasSize), $this->datasSize, $this->map, $ignored);
- if (false !== $ignored) {
- $this->datasSize = strlen($this->datas) - strlen($ignored);
- } else {
- $this->datasSize = strlen($this->datas);
- }
- }
- }