<?php /** * @copyright Copyright 2024 Daniel Pimley * @license https://github.com/xenocrat/chyrp-markdown/blob/master/LICENSE * @link https://github.com/xenocrat/chyrp-markdown#readme */ namespace xenocrat\markdown\block; /** * Adds fenced aside blocks. * * Automatically includes aside block support. */ trait FencedAsideTrait { use AsideTrait; /** * Identify a line as the beginning of a fenced aside. */ protected function identifyFencedAside($line): bool { if ( $line[0] === ' ' && strspn($line, ' ') < 4 ) { // trim up to three spaces $line = ltrim($line, ' '); } return str_starts_with($line, '<<<'); } /** * Consume lines for a fenced aside. */ protected function consumeFencedAside($lines, $current): array { $indent = strspn($lines[$current], ' '); $line = substr($lines[$current], $indent); $mw = strspn($line, $line[0]); $fence = substr($line, 0, $mw); $language = trim(substr($line, $mw)); $content = []; // Consume until end fence... for ($i = $current + 1, $count = count($lines); $i < $count; $i++) { $line = $lines[$i]; $leadingSpaces = strspn($line, ' '); if ( $leadingSpaces > 3 || strspn(ltrim($line), $fence[0]) < $mw || !str_ends_with(rtrim($line), $fence[0]) ) { if ($indent > 0 && $leadingSpaces > 0) { if ($leadingSpaces < $indent) { $line = ltrim($line); } else { $line = substr($line, $indent); } } $content[] = $line; } else { break; } } $block = [ 'aside', 'content' => $this->parseBlocks($content), ]; return [$block, $i]; } abstract protected function parseBlocks($lines); }