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50 lines
1.6 KiB
50 lines
1.6 KiB
<?php
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/** @license MIT
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* Copyright 2021 Dustin Wilson et al.
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* See LICENSE file for details */
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declare(strict_types=1);
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namespace dW\Lit;
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class Data {
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use FauxReadOnly;
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// True if on the first line
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protected bool $_firstLine = true;
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// The stored generator
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protected \Generator $generator;
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// True if on the last line.
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protected bool $_lastLine = false;
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// Some matches will check for the last line before the final newline, so this
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// will be true if on the line before the final newline or if on the last line
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// if there isn't an extra newline at the end of the string.
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protected bool $_lastLineBeforeFinalNewLine = false;
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// The input string split into an array by newline
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protected array $lines = [];
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// The length of the data array
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protected int $linesLength = 0;
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public function __construct(string $data) {
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$this->lines = explode("\n", $data);
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$this->linesLength = count($this->lines);
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$this->generator = $this->lineGenerator();
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}
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public function get(): \Generator {
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return $this->generator;
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}
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protected function lineGenerator(): \Generator {
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$lastLineIndex = $this->linesLength - 1;
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$lastLineBeforeFinalNewLineIndex = ($this->lines[$lastLineIndex] === '') ? $lastLineIndex - 1 : $lastLineIndex;
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foreach ($this->lines as $lineNumber => $line) {
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$this->_lastLine = ($lineNumber === $lastLineIndex);
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$this->_lastLineBeforeFinalNewLine = ($lineNumber === $lastLineBeforeFinalNewLineIndex);
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yield $lineNumber + 1 => $line;
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$this->_firstLine = false;
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}
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}
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}
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