Updated dependencies

README.md

@@ -4,20 +4,23 @@ A markdown renderer that supports only a subset of the CommonMark spec in order
 
 ## Features
 
-- Code blocks
-- Formatting (bold, italic, monospace)
+- Bold
+- Code
+- Italic
 - Links
 - Lists
+- Images
 - Headers
 - Paragraphs
 - Quotes
 - Separators
+- Strikethrough
 - Tables
 
 ## Installation
 
 ```shell
-go get git.akyoto.dev/go/markdown
+go get git.urbach.dev/go/markdown
 ```
 
 ## Usage
@@ -34,7 +37,9 @@ PASS: TestParagraph
 PASS: TestHeader
 PASS: TestItalic
 PASS: TestBold
+PASS: TestStrike
 PASS: TestLink
+PASS: TestImage
 PASS: TestList
 PASS: TestTables
 PASS: TestCode
@@ -48,14 +53,14 @@ coverage: 100.0% of statements
 ## Benchmarks
 
 ```
-BenchmarkSmall-12        5986922               187.5 ns/op            32 B/op          1 allocs/op
-BenchmarkMedium-12       1000000              1077 ns/op             512 B/op          1 allocs/op
-BenchmarkLarge-12         255178              4055 ns/op            2560 B/op          2 allocs/op
+BenchmarkSmall-12        5884641               201.5 ns/op            32 B/op          1 allocs/op
+BenchmarkMedium-12        938371              1124 ns/op             512 B/op          1 allocs/op
+BenchmarkLarge-12         277065              4115 ns/op            2560 B/op          2 allocs/op
 ```
 
 ## License
 
-Please see the [license documentation](https://akyoto.dev/license).
+Please see the [license documentation](https://urbach.dev/license).
 
 ## Copyright
 

Render.go

@@ -17,6 +17,7 @@ type renderer struct {
 	paragraphLevel     int
 	quoteLevel         int
 	listLevel          int
+	olistLevel         int
 	tableLevel         int
 	codeLines          int
 	tableHeaderWritten bool
@@ -200,6 +201,26 @@ func (r *renderer) processLine(line string) {
 		}
 	}
 
+	pos := 0
+
+	for pos < len(line) && line[pos] >= '0' && line[pos] <= '9' {
+		pos++
+
+		if pos < len(line) && (line[pos] == '.' || line[pos] == ')') {
+			line = strings.TrimSpace(line[pos+1:])
+
+			if r.olistLevel == 0 {
+				r.WriteString("<ol>")
+				r.olistLevel++
+			}
+
+			r.WriteString("<li>")
+			r.writeText(line)
+			r.WriteString("</li>")
+			return
+		}
+	}
+
 	if r.paragraphLevel == 0 {
 		r.WriteString("<p>")
 		r.paragraphLevel++
@@ -233,7 +254,12 @@ func (r *renderer) closeLists() {
 		r.WriteString("</ul>")
 	}
 
+	for range r.olistLevel {
+		r.WriteString("</ol>")
+	}
+
 	r.listLevel = 0
+	r.olistLevel = 0
 }
 
 // closeTables closes open tables.
@@ -253,15 +279,15 @@ func (r *renderer) writeText(markdown string) {
 		searchStart   = 0
 		linkTextStart = -1
 		linkTextEnd   = -1
-		urlStart      = -1
-		codeStart     = -1
+		linkIsImage   = false
 		emStart       = -1
 		strongStart   = -1
-		parentheses   = 0
+		strikeStart   = -1
 	)
 
+begin:
 	for {
-		i := strings.IndexAny(markdown[searchStart:], "[]()`*_")
+		i := strings.IndexAny(markdown[searchStart:], "[]()`*_~!")
 
 		if i == -1 {
 			r.WriteString(html.EscapeString(markdown[tokenStart:]))
@@ -270,9 +296,8 @@ func (r *renderer) writeText(markdown string) {
 
 		i += searchStart
 		searchStart = i + 1
-		c := markdown[i]
 
-		switch c {
+		switch markdown[i] {
 		case '[':
 			r.WriteString(html.EscapeString(markdown[tokenStart:i]))
 			tokenStart = i
@@ -282,45 +307,71 @@ func (r *renderer) writeText(markdown string) {
 			linkTextEnd = i
 
 		case '(':
-			if parentheses == 0 {
-				urlStart = i
+			if linkTextStart == -1 || linkTextEnd == -1 {
+				continue
 			}
 
-			parentheses++
+			level := 1
 
-		case ')':
-			parentheses--
+			for {
+				pos := strings.IndexAny(markdown[searchStart:], "()")
 
-			if parentheses == 0 && linkTextStart >= 0 && linkTextEnd >= 0 && urlStart >= 0 {
-				linkText := markdown[linkTextStart+1 : linkTextEnd]
-				linkURL := markdown[urlStart+1 : i]
+				if pos == -1 {
+					goto begin
+				}
 
-				r.WriteString("<a href=\"")
-				r.WriteString(sanitizeURL(linkURL))
-				r.WriteString("\">")
-				r.WriteString(html.EscapeString(linkText))
-				r.WriteString("</a>")
+				switch markdown[searchStart+pos] {
+				case '(':
+					level++
+				case ')':
+					level--
 
-				linkTextStart = -1
-				linkTextEnd = -1
-				urlStart = -1
+					if level == 0 {
+						urlEnd := searchStart + pos
+						searchStart = urlEnd + 1
 
-				tokenStart = i + 1
+						linkText := markdown[linkTextStart+1 : linkTextEnd]
+						linkURL := markdown[i+1 : urlEnd]
+
+						if linkIsImage {
+							r.WriteString("<img src=\"")
+							r.WriteString(sanitizeURL(linkURL))
+							r.WriteString("\" alt=\"")
+							r.WriteString(html.EscapeString(linkText))
+							r.WriteString("\">")
+						} else {
+							r.WriteString("<a href=\"")
+							r.WriteString(sanitizeURL(linkURL))
+							r.WriteString("\">")
+							r.WriteString(html.EscapeString(linkText))
+							r.WriteString("</a>")
+						}
+
+						linkTextStart = -1
+						linkTextEnd = -1
+						tokenStart = urlEnd + 1
+						goto begin
+					}
+				}
+
+				searchStart += pos + 1
 			}
 
 		case '`':
-			if codeStart != -1 {
-				r.WriteString("<code>")
-				r.WriteString(html.EscapeString(markdown[codeStart:i]))
-				r.WriteString("</code>")
-				codeStart = -1
-				tokenStart = i + 1
-			} else {
-				r.WriteString(html.EscapeString(markdown[tokenStart:i]))
-				tokenStart = i
-				codeStart = i + 1
+			end := strings.IndexByte(markdown[searchStart:], '`')
+
+			if end == -1 {
+				continue
 			}
 
+			r.WriteString(html.EscapeString(markdown[tokenStart:i]))
+			r.WriteString("<code>")
+			r.WriteString(html.EscapeString(markdown[searchStart : searchStart+end]))
+			r.WriteString("</code>")
+
+			searchStart += end + 1
+			tokenStart = searchStart
+
 		case '*', '_':
 			if i == emStart {
 				strongStart = i + 1
@@ -343,6 +394,34 @@ func (r *renderer) writeText(markdown string) {
 				tokenStart = i
 				emStart = i + 1
 			}
+
+		case '~':
+			if i+1 >= len(markdown) || markdown[i+1] != '~' {
+				continue
+			}
+
+			if strikeStart != -1 {
+				r.WriteString("<del>")
+				r.WriteString(html.EscapeString(markdown[strikeStart:i]))
+				r.WriteString("</del>")
+				strikeStart = -1
+				tokenStart = i + 2
+			} else {
+				r.WriteString(html.EscapeString(markdown[tokenStart:i]))
+				tokenStart = i
+				strikeStart = i + 2
+			}
+
+		case '!':
+			if i+1 >= len(markdown) || markdown[i+1] != '[' {
+				continue
+			}
+
+			r.WriteString(html.EscapeString(markdown[tokenStart:i]))
+			tokenStart = i
+			linkTextStart = i + 1
+			searchStart++
+			linkIsImage = true
 		}
 	}
 }

Render_test.go

@@ -3,8 +3,8 @@ package markdown_test
 import (
 	"testing"
 
-	"git.akyoto.dev/go/assert"
-	"git.akyoto.dev/go/markdown"
+	"git.urbach.dev/go/assert"
+	"git.urbach.dev/go/markdown"
 )
 
 func TestEmpty(t *testing.T) {
@@ -39,20 +39,44 @@ func TestBold(t *testing.T) {
 	assert.Equal(t, markdown.Render("__bold__"), "<p><strong>bold</strong></p>")
 }
 
+func TestStrike(t *testing.T) {
+	assert.Equal(t, markdown.Render("~normal text~"), "<p>~normal text~</p>")
+	assert.Equal(t, markdown.Render("~~deleted text~~"), "<p><del>deleted text</del></p>")
+}
+
 func TestLink(t *testing.T) {
-	assert.Equal(t, markdown.Render("[text](https://example.com/)"), "<p><a href=\"https://example.com/\">text</a></p>")
-	assert.Equal(t, markdown.Render("[text](https://example.com/"), "<p>[text](https://example.com/</p>")
-	assert.Equal(t, markdown.Render("[text]https://example.com/)"), "<p>[text]https://example.com/)</p>")
-	assert.Equal(t, markdown.Render("[text(https://example.com/)"), "<p>[text(https://example.com/)</p>")
-	assert.Equal(t, markdown.Render("text](https://example.com/)"), "<p>text](https://example.com/)</p>")
-	assert.Equal(t, markdown.Render("Prefix [text](https://example.com/) suffix."), "<p>Prefix <a href=\"https://example.com/\">text</a> suffix.</p>")
+	assert.Equal(t, markdown.Render("[text](https://example.com/)"), `<p><a href="https://example.com/">text</a></p>`)
+	assert.Equal(t, markdown.Render("[text](https://example.com/"), `<p>[text](https://example.com/</p>`)
+	assert.Equal(t, markdown.Render("[text]https://example.com/)"), `<p>[text]https://example.com/)</p>`)
+	assert.Equal(t, markdown.Render("[text(https://example.com/)"), `<p>[text(https://example.com/)</p>`)
+	assert.Equal(t, markdown.Render("text](https://example.com/)"), `<p>text](https://example.com/)</p>`)
+	assert.Equal(t, markdown.Render("[text](https://example.com/_test_)"), `<p><a href="https://example.com/_test_">text</a></p>`)
+	assert.Equal(t, markdown.Render("Prefix [text](https://example.com/) suffix."), `<p>Prefix <a href="https://example.com/">text</a> suffix.</p>`)
+}
+
+func TestImage(t *testing.T) {
+	assert.Equal(t, markdown.Render("!"), `<p>!</p>`)
+	assert.Equal(t, markdown.Render("!["), `<p>![</p>`)
+	assert.Equal(t, markdown.Render("![]"), `<p>![]</p>`)
+	assert.Equal(t, markdown.Render("![]("), `<p>![](</p>`)
+	assert.Equal(t, markdown.Render("![]()"), `<p><img src="" alt=""></p>`)
+	assert.Equal(t, markdown.Render("![title](https://example.com/image.png)"), `<p><img src="https://example.com/image.png" alt="title"></p>`)
 }
 
 func TestList(t *testing.T) {
+	assert.Equal(t, markdown.Render("-"), "<p>-</p>")
+	assert.Equal(t, markdown.Render("- "), "<ul><li></li></ul>")
 	assert.Equal(t, markdown.Render("- Entry"), "<ul><li>Entry</li></ul>")
 	assert.Equal(t, markdown.Render("- Entry 1\n- Entry 2"), "<ul><li>Entry 1</li><li>Entry 2</li></ul>")
-	assert.Equal(t, markdown.Render("- Entry 1\n- Entry 2\n- Entry 3"), "<ul><li>Entry 1</li><li>Entry 2</li><li>Entry 3</li></ul>")
-	assert.Equal(t, markdown.Render("-"), "<p>-</p>")
+}
+
+func TestOrderedList(t *testing.T) {
+	assert.Equal(t, markdown.Render("1"), "<p>1</p>")
+	assert.Equal(t, markdown.Render("1."), "<ol><li></li></ol>")
+	assert.Equal(t, markdown.Render("1. "), "<ol><li></li></ol>")
+	assert.Equal(t, markdown.Render("1. Entry"), "<ol><li>Entry</li></ol>")
+	assert.Equal(t, markdown.Render("999) Entry"), "<ol><li>Entry</li></ol>")
+	assert.Equal(t, markdown.Render("1. Entry\n2. Entry"), "<ol><li>Entry</li><li>Entry</li></ol>")
 }
 
 func TestTables(t *testing.T) {
@@ -64,6 +88,7 @@ func TestCode(t *testing.T) {
 	assert.Equal(t, markdown.Render("```\nText\n```"), "<pre><code>Text</code></pre>")
 	assert.Equal(t, markdown.Render("```go\ntype A struct {\n\t\n}\n```"), "<pre><code class=\"language-go\">type A struct {\n\t\n}</code></pre>")
 	assert.Equal(t, markdown.Render("`monospace`"), "<p><code>monospace</code></p>")
+	assert.Equal(t, markdown.Render("`unfinished"), "<p>`unfinished</p>")
 	assert.Equal(t, markdown.Render("Inline `monospace` text."), "<p>Inline <code>monospace</code> text.</p>")
 }
 
@@ -81,22 +106,22 @@ func TestSeparator(t *testing.T) {
 }
 
 func TestCombined(t *testing.T) {
-	assert.Equal(t, markdown.Render("# Header\n\nLine 1."), "<h1>Header</h1><p>Line 1.</p>")
-	assert.Equal(t, markdown.Render("# Header\nLine 1.\nLine 2.\nLine 3."), "<h1>Header</h1><p>Line 1. Line 2. Line 3.</p>")
-	assert.Equal(t, markdown.Render("# Header 1\nLine 1.\n# Header 2\nLine 2."), "<h1>Header 1</h1><p>Line 1.</p><h1>Header 2</h1><p>Line 2.</p>")
-	assert.Equal(t, markdown.Render("# [Header Link](https://example.com/)"), "<h1><a href=\"https://example.com/\">Header Link</a></h1>")
-	assert.Equal(t, markdown.Render("# Title\n\n- Entry 1\n- Entry 2\n\nText."), "<h1>Title</h1><ul><li>Entry 1</li><li>Entry 2</li></ul><p>Text.</p>")
-	assert.Equal(t, markdown.Render("- Entry\n# Header"), "<ul><li>Entry</li></ul><h1>Header</h1>")
-	assert.Equal(t, markdown.Render("> - Entry\n> # Header"), "<blockquote><ul><li>Entry</li></ul><h1>Header</h1></blockquote>")
-	assert.Equal(t, markdown.Render("> **bold** and *italic* text."), "<blockquote><p><strong>bold</strong> and <em>italic</em> text.</p></blockquote>")
-	assert.Equal(t, markdown.Render("> __bold__ and _italic_ text."), "<blockquote><p><strong>bold</strong> and <em>italic</em> text.</p></blockquote>")
+	assert.Equal(t, markdown.Render("# Header\n\nLine 1."), `<h1>Header</h1><p>Line 1.</p>`)
+	assert.Equal(t, markdown.Render("# Header\nLine 1.\nLine 2.\nLine 3."), `<h1>Header</h1><p>Line 1. Line 2. Line 3.</p>`)
+	assert.Equal(t, markdown.Render("# Header 1\nLine 1.\n# Header 2\nLine 2."), `<h1>Header 1</h1><p>Line 1.</p><h1>Header 2</h1><p>Line 2.</p>`)
+	assert.Equal(t, markdown.Render("# [Header Link](https://example.com/)"), `<h1><a href="https://example.com/">Header Link</a></h1>`)
+	assert.Equal(t, markdown.Render("# Title\n\n- Entry 1\n- Entry 2\n\nText."), `<h1>Title</h1><ul><li>Entry 1</li><li>Entry 2</li></ul><p>Text.</p>`)
+	assert.Equal(t, markdown.Render("- Entry\n# Header"), `<ul><li>Entry</li></ul><h1>Header</h1>`)
+	assert.Equal(t, markdown.Render("> - Entry\n> # Header"), `<blockquote><ul><li>Entry</li></ul><h1>Header</h1></blockquote>`)
+	assert.Equal(t, markdown.Render("> **bold** and *italic* text."), `<blockquote><p><strong>bold</strong> and <em>italic</em> text.</p></blockquote>`)
+	assert.Equal(t, markdown.Render("> __bold__ and _italic_ text."), `<blockquote><p><strong>bold</strong> and <em>italic</em> text.</p></blockquote>`)
 }
 
 func TestSecurity(t *testing.T) {
-	assert.Equal(t, markdown.Render("[text](javascript:alert(\"xss\"))"), "<p><a href=\"\">text</a></p>")
-	assert.Equal(t, markdown.Render("[text](javAscRipt:alert(\"xss\"))"), "<p><a href=\"\">text</a></p>")
-	assert.Equal(t, markdown.Render("[text]( javascript:alert(\"xss\"))"), "<p><a href=\"\">text</a></p>")
-	assert.Equal(t, markdown.Render("[text]('javAscRipt:alert(\"xss\")')"), "<p><a href=\"&#39;javAscRipt:alert(&#34;xss&#34;)&#39;\">text</a></p>")
-	assert.Equal(t, markdown.Render("[text](\"><script>alert(123)</script>)"), "<p><a href=\"&#34;&gt;&lt;script&gt;alert(123)&lt;/script&gt;\">text</a></p>")
-	assert.Equal(t, markdown.Render("[<script>alert(123)</script>]()"), "<p><a href=\"\">&lt;script&gt;alert(123)&lt;/script&gt;</a></p>")
+	assert.Equal(t, markdown.Render(`[text](javascript:alert("xss"))`), `<p><a href="">text</a></p>`)
+	assert.Equal(t, markdown.Render(`[text](javAscRipt:alert("xss"))`), `<p><a href="">text</a></p>`)
+	assert.Equal(t, markdown.Render(`[text]( javascript:alert("xss"))`), `<p><a href="">text</a></p>`)
+	assert.Equal(t, markdown.Render(`[text]('javAscRipt:alert("xss")')`), `<p><a href="&#39;javAscRipt:alert(&#34;xss&#34;)&#39;">text</a></p>`)
+	assert.Equal(t, markdown.Render(`[text]("><script>alert(123)</script>)`), `<p><a href="&#34;&gt;&lt;script&gt;alert(123)&lt;/script&gt;">text</a></p>`)
+	assert.Equal(t, markdown.Render(`[<script>alert(123)</script>]()`), `<p><a href="">&lt;script&gt;alert(123)&lt;/script&gt;</a></p>`)
 }

benchmarks_test.go

@@ -4,8 +4,8 @@ import (
 	"os"
 	"testing"
 
-	"git.akyoto.dev/go/assert"
-	"git.akyoto.dev/go/markdown"
+	"git.urbach.dev/go/assert"
+	"git.urbach.dev/go/markdown"
 )
 
 func BenchmarkSmall(b *testing.B) {
@@ -13,7 +13,7 @@ func BenchmarkSmall(b *testing.B) {
 	assert.Nil(b, err)
 	input := string(small)
 
-	for range b.N {
+	for b.Loop() {
 		markdown.Render(input)
 	}
 }
@@ -23,7 +23,7 @@ func BenchmarkMedium(b *testing.B) {
 	assert.Nil(b, err)
 	input := string(medium)
 
-	for range b.N {
+	for b.Loop() {
 		markdown.Render(input)
 	}
 }
@@ -33,7 +33,7 @@ func BenchmarkLarge(b *testing.B) {
 	assert.Nil(b, err)
 	input := string(large)
 
-	for range b.N {
+	for b.Loop() {
 		markdown.Render(input)
 	}
 }

go.mod

@@ -1,5 +1,5 @@
-module git.akyoto.dev/go/markdown
+module git.urbach.dev/go/markdown
 
-go 1.22.1
+go 1.24
 
-require git.akyoto.dev/go/assert v0.1.3
+require git.urbach.dev/go/assert v0.0.0-20250606150337-559d3d3afcda

go.sum

@@ -1,2 +1,2 @@
-git.akyoto.dev/go/assert v0.1.3 h1:QwCUbmG4aZYsNk/OuRBz1zWVKmGlDUHhOnnDBfn8Qw8=
-git.akyoto.dev/go/assert v0.1.3/go.mod h1:0GzMaM0eURuDwtGkJJkCsI7r2aUKr+5GmWNTFPgDocM=
+git.urbach.dev/go/assert v0.0.0-20250606150337-559d3d3afcda h1:VN6ZQwtwLOm2xTms+v8IIeeNjvs55qyEBNArv3dPq9g=
+git.urbach.dev/go/assert v0.0.0-20250606150337-559d3d3afcda/go.mod h1:PNI/NSBOqvoeU58/7eBsIR09Yoq2S/qtSRiTrctkiq0=