89 lines
2.1 KiB
PHP
89 lines
2.1 KiB
PHP
<?php
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// Stream.php
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// Created: 2021-04-30
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// Updated: 2022-02-27
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namespace Index\IO;
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use Stringable;
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use Index\Environment;
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use Index\ICloseable;
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abstract class Stream implements Stringable, ICloseable {
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public const START = SEEK_SET;
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public const CURRENT = SEEK_CUR;
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public const END = SEEK_END;
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abstract public function getPosition(): int;
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abstract public function getLength(): int;
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abstract public function setLength(int $length): void;
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abstract public function canRead(): bool;
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abstract public function canWrite(): bool;
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abstract public function canSeek(): bool;
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abstract public function hasTimedOut(): bool;
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abstract public function isBlocking(): bool;
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abstract public function isEnded(): bool;
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abstract public function readChar(): ?string;
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public function readByte(): int {
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$char = $this->readChar();
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if($char === null)
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return -1;
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return ord($char);
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}
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abstract public function readLine(): ?string;
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abstract public function read(int $length): ?string;
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abstract public function seek(int $offset, int $origin = self::START): int;
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abstract public function write(string $buffer, int $length = -1): void;
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public function writeLine(string $line): void {
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$this->write($line);
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$this->write(Environment::NEWLINE);
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}
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abstract public function writeChar(string $char): void;
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public function writeByte(int $byte): void {
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$this->writeChar(chr($byte & 0xFF));
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}
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public function copyTo(Stream $other): void {
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if($this->canSeek())
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$this->seek(0);
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while(!$this->isEnded())
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$other->write($this->read(8192));
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}
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abstract public function flush(): void;
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abstract public function close(): void;
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public function __toString(): string {
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if($this->canSeek())
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$this->seek(0);
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$string = '';
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while(!$this->isEnded())
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$string .= $this->read(8192);
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return $string;
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}
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public function __destruct() {
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$this->close();
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}
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}
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