From 8fd0f17b7bcca4725046ca82d3193b9986fe1faa Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Sat, 9 Sep 2023 23:03:57 +0200
Subject: Add primitive support for doctypes and XML

---
 formatter/formatter.go | 55 +++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 41 insertions(+), 14 deletions(-)

(limited to 'formatter/formatter.go')

diff --git a/formatter/formatter.go b/formatter/formatter.go
index 7d44891..738581d 100644
--- a/formatter/formatter.go
+++ b/formatter/formatter.go
@@ -7,6 +7,8 @@ import (
 	"git.thomasvoss.com/gsp/parser"
 )
 
+var xml = false
+
 var stringEscapes = map[rune]string{
 	'"': "&quot;",
 	'&': "&amp;",
@@ -19,6 +21,24 @@ func PrintHtml(ast parser.AstNode) {
 		return
 	}
 
+	if ast.Type == parser.DocType || ast.Type == parser.XmlDocType {
+		if ast.Type == parser.DocType {
+			fmt.Print("<!DOCTYPE")
+		} else {
+			xml = true
+			fmt.Print("<?xml")
+		}
+
+		for _, a := range ast.Attrs {
+			printAttr(a)
+		}
+
+		if ast.Type == parser.XmlDocType {
+			fmt.Print("?")
+		}
+		fmt.Print(">")
+	}
+
 	if ast.Type == parser.Normal {
 		fmt.Printf("<%s", ast.Text)
 
@@ -44,22 +64,14 @@ func PrintHtml(ast parser.AstNode) {
 		}
 
 		for _, a := range notClasses {
-			fmt.Printf(" %s", a.Key)
-			if a.Value == "" {
-				continue
-			}
-			fmt.Print("=\"")
-			for _, r := range a.Value {
-				if v, ok := stringEscapes[r]; ok {
-					fmt.Print(v)
-				} else {
-					fmt.Printf("%c", r)
-				}
-			}
-			fmt.Print("\"")
+			printAttr(a)
 		}
 
-		fmt.Print(">")
+		if xml && len(ast.Children) == 0 {
+			fmt.Print("/>")
+		} else {
+			fmt.Print(">")
+		}
 	}
 
 	if len(ast.Children) == 0 {
@@ -85,6 +97,21 @@ func PrintHtml(ast parser.AstNode) {
 	}
 }
 
+func printAttr(a parser.Attr) {
+	fmt.Printf(" %s", a.Key)
+	if a.Value != "" {
+		fmt.Print("=\"")
+		for _, r := range a.Value {
+			if v, ok := stringEscapes[r]; ok {
+				fmt.Print(v)
+			} else {
+				fmt.Printf("%c", r)
+			}
+		}
+		fmt.Print("\"")
+	}
+}
+
 func trimLeftSpaces(s string) string {
 	i := 0
 	rs := []rune(s)
-- 
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