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функция не описана

SimplePie_gzdecode::parse() public WP 1.0

Decode the GZIP stream

{} Это метод класса: SimplePie_gzdecode{}

Хуков нет.

Возвращает

true/false. Successfulness

Использование

$SimplePie_gzdecode = new SimplePie_gzdecode();
$SimplePie_gzdecode->parse();

Код SimplePie_gzdecode::parse() WP 5.5.3

<?php
public function parse()
{
	if ($this->compressed_size >= $this->min_compressed_size)
	{
		// Check ID1, ID2, and CM
		if (substr($this->compressed_data, 0, 3) !== "\x1F\x8B\x08")
		{
			return false;
		}

		// Get the FLG (FLaGs)
		$this->flags = ord($this->compressed_data[3]);

		// FLG bits above (1 << 4) are reserved
		if ($this->flags > 0x1F)
		{
			return false;
		}

		// Advance the pointer after the above
		$this->position += 4;

		// MTIME
		$mtime = substr($this->compressed_data, $this->position, 4);
		// Reverse the string if we're on a big-endian arch because l is the only signed long and is machine endianness
		if (current(unpack('S', "\x00\x01")) === 1)
		{
			$mtime = strrev($mtime);
		}
		$this->MTIME = current(unpack('l', $mtime));
		$this->position += 4;

		// Get the XFL (eXtra FLags)
		$this->XFL = ord($this->compressed_data[$this->position++]);

		// Get the OS (Operating System)
		$this->OS = ord($this->compressed_data[$this->position++]);

		// Parse the FEXTRA
		if ($this->flags & 4)
		{
			// Read subfield IDs
			$this->SI1 = $this->compressed_data[$this->position++];
			$this->SI2 = $this->compressed_data[$this->position++];

			// SI2 set to zero is reserved for future use
			if ($this->SI2 === "\x00")
			{
				return false;
			}

			// Get the length of the extra field
			$len = current(unpack('v', substr($this->compressed_data, $this->position, 2)));
			$this->position += 2;

			// Check the length of the string is still valid
			$this->min_compressed_size += $len + 4;
			if ($this->compressed_size >= $this->min_compressed_size)
			{
				// Set the extra field to the given data
				$this->extra_field = substr($this->compressed_data, $this->position, $len);
				$this->position += $len;
			}
			else
			{
				return false;
			}
		}

		// Parse the FNAME
		if ($this->flags & 8)
		{
			// Get the length of the filename
			$len = strcspn($this->compressed_data, "\x00", $this->position);

			// Check the length of the string is still valid
			$this->min_compressed_size += $len + 1;
			if ($this->compressed_size >= $this->min_compressed_size)
			{
				// Set the original filename to the given string
				$this->filename = substr($this->compressed_data, $this->position, $len);
				$this->position += $len + 1;
			}
			else
			{
				return false;
			}
		}

		// Parse the FCOMMENT
		if ($this->flags & 16)
		{
			// Get the length of the comment
			$len = strcspn($this->compressed_data, "\x00", $this->position);

			// Check the length of the string is still valid
			$this->min_compressed_size += $len + 1;
			if ($this->compressed_size >= $this->min_compressed_size)
			{
				// Set the original comment to the given string
				$this->comment = substr($this->compressed_data, $this->position, $len);
				$this->position += $len + 1;
			}
			else
			{
				return false;
			}
		}

		// Parse the FHCRC
		if ($this->flags & 2)
		{
			// Check the length of the string is still valid
			$this->min_compressed_size += $len + 2;
			if ($this->compressed_size >= $this->min_compressed_size)
			{
				// Read the CRC
				$crc = current(unpack('v', substr($this->compressed_data, $this->position, 2)));

				// Check the CRC matches
				if ((crc32(substr($this->compressed_data, 0, $this->position)) & 0xFFFF) === $crc)
				{
					$this->position += 2;
				}
				else
				{
					return false;
				}
			}
			else
			{
				return false;
			}
		}

		// Decompress the actual data
		if (($this->data = gzinflate(substr($this->compressed_data, $this->position, -8))) === false)
		{
			return false;
		}

		$this->position = $this->compressed_size - 8;

		// Check CRC of data
		$crc = current(unpack('V', substr($this->compressed_data, $this->position, 4)));
		$this->position += 4;
		/*if (extension_loaded('hash') && sprintf('%u', current(unpack('V', hash('crc32b', $this->data)))) !== sprintf('%u', $crc))
		{
			return false;
		}*/

		// Check ISIZE of data
		$isize = current(unpack('V', substr($this->compressed_data, $this->position, 4)));
		$this->position += 4;
		if (sprintf('%u', strlen($this->data) & 0xFFFFFFFF) !== sprintf('%u', $isize))
		{
			return false;
		}

		// Wow, against all odds, we've actually got a valid gzip string
		return true;
	}

	return false;
}