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<?php
namespace HTML5\Parser;
/**
* Interface for stream readers.
*
* The parser only reads from streams. Various input sources can write
* an adapater to this InputStream.
*
* Currently provided InputStream implementations include
* FileInputStream and StringInputStream.
*/
interface InputStream extends \Iterator {
/**
* Returns the current line that is being consumed.
*
* TODO: Move this to the scanner.
*/
public function currentLine();
/**
* Returns the current column of the current line that the tokenizer is at.
*
* Newlines are column 0. The first char after a newline is column 1.
*
* @TODO Move this to the scanner.
*
* @return int
* The column number.
*/
public function columnOffset();
/**
* Get all characters until EOF.
*
* This consumes characters until the EOF.
*/
public function remainingChars();
/**
* Read to a particular match (or until $max bytes are consumed).
*
* This operates on byte sequences, not characters.
*
* Matches as far as possible until we reach a certain set of bytes
* and returns the matched substring.
*
* @see strcspn
* @param string $bytes
* Bytes to match.
* @param int $max
* Maximum number of bytes to scan.
* @return mixed
* Index or FALSE if no match is found. You should use strong
* equality when checking the result, since index could be 0.
*/
public function charsUntil($bytes, $max = null);
/**
* Returns the string so long as $bytes matches.
*
* Matches as far as possible with a certain set of bytes
* and returns the matched substring.
*
* @see strspn
* @param string $bytes
* A mask of bytes to match. If ANY byte in this mask matches the
* current char, the pointer advances and the char is part of the
* substring.
* @param int $max
* The max number of chars to read.
*/
public function charsWhile($bytes, $max = null);
/**
* Unconsume one character.
*
* @param int $howMany
* The number of characters to move the pointer back.
*/
public function unconsume($howMany = 1);
/**
* Retrieve the next character without advancing the pointer.
*/
public function peek();
}
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