439db65 · folio · pear-git-v3

Changed files (2) +60 -0

lib/markdown.php +27 -0

…	…	@@ -0,0 +1,27 @@
	1	<?php
	2	// lib/markdown.php — Minimal markdown-to-HTML parser
	3
	4	function parse_markdown($md) {
	5	$html = $md;
	6
	7	// Headings (must be processed before paragraphs)
	8	$html = preg_replace('/^### (.+)$/m', '<h3>$1</h3>', $html);
	9	$html = preg_replace('/^## (.+)$/m', '<h2>$1</h2>', $html);
	10	$html = preg_replace('/^# (.+)$/m', '<h1>$1</h1>', $html);
	11
	12	// Inline formatting
	13	$html = preg_replace('/\\(.+?)\\/', '<strong>$1</strong>', $html);
	14	$html = preg_replace('/\(.+?)\/', '<em>$1</em>', $html);
	15	$html = preg_replace('/\[([^\]]+)\]$([^)]+)$/', '<a href="$2">$1</a>', $html);
	16
	17	// Paragraphs: split on double newlines
	18	$html = preg_replace('/\n\n+/', '</p><p>', $html);
	19	$html = '<p>' . $html . '</p>';
	20
	21	// Clean up headings wrapped in <p> tags
	22	$html = preg_replace('/<p>(<h[123]>)/', '$1', $html);
	23	$html = preg_replace('/(<\/h[123]>)<\/p>/', '$1', $html);
	24	$html = str_replace('<p></p>', '', $html);
	25
	26	return $html;
	27	}

test_markdown.php +33 -0

…	…	@@ -0,0 +1,33 @@
	1	<?php
	2	// test_markdown.php — run: php test_markdown.php
	3	require_once __DIR__ . '/lib/markdown.php';
	4
	5	function assert_eq($label, $got, $expected) {
	6	if ($got !== $expected) {
	7	echo "FAIL: $label\n Expected: $expected\n Got: $got\n";
	8	exit(1);
	9	}
	10	echo "PASS: $label\n";
	11	}
	12
	13	// Headings
	14	assert_eq('h1', parse_markdown("# Title"), '<h1>Title</h1>');
	15	assert_eq('h2', parse_markdown("## Subtitle"), '<h2>Subtitle</h2>');
	16	assert_eq('h3', parse_markdown("### Sub-sub"), '<h3>Sub-sub</h3>');
	17
	18	// Inline formatting
	19	assert_eq('bold', parse_markdown("bold"), '<p><strong>bold</strong></p>');
	20	assert_eq('italic', parse_markdown("italic"), '<p><em>italic</em></p>');
	21	assert_eq('link', parse_markdown("[text](url)"), '<p><a href="url">text</a></p>');
	22
	23	// Paragraphs
	24	assert_eq('two paragraphs', parse_markdown("First\n\nSecond"), '<p>First</p><p>Second</p>');
	25
	26	// Mixed
	27	assert_eq('heading then paragraph', parse_markdown("# Title\n\nSome text"), '<h1>Title</h1><p>Some text</p>');
	28
	29	// Complex
	30	assert_eq('bold in paragraph', parse_markdown("This is important text"), '<p>This is <strong>important</strong> text</p>');
	31	assert_eq('link in paragraph', parse_markdown("Visit [my site](https://example.com) today"), '<p>Visit <a href="https://example.com">my site</a> today</p>');
	32
	33	echo "\nAll markdown tests passed.\n";