Move template functions to separate file

assets/_head.html

@@ -3,7 +3,7 @@
 <meta charset=utf-8>
 <title>Httpbun</title>
 <link rel=canonical href="https://httpbun.com">
-
+<meta name=color-scheme content="light dark">
 <meta name=viewport content="width=device-width">
 
 <link rel=apple-touch-icon sizes=180x180 href="{{.serverSpec.PathPrefix}}/icon-180.png">

assets/mixer.html

@@ -8,7 +8,7 @@ <h1><img alt=Logo src='{{.pathPrefix}}/icon-180.png'> Mixer &mdash; <a style="co
 
 <p id=urlMismatchMessage style="display:none">Note: Below URL is different from the one in the browser URL bar.</p>
 
-<p style="cursor:pointer;text-align:center"><a id=url>https://httpbun.com/mix/...</a><br>Click to copy</p>
+<p style="cursor:pointer;text-align:center"><a id=url>https://httpbun.com/mix/...</a>Click to copy</p>
 
 <form id=form></form>
 

assets/styles.css

@@ -146,6 +146,14 @@ button {
 	display: inline-block;
 }
 
+#url {
+	white-space: nowrap;
+	overflow-x: hidden;
+	max-width: 100%;
+	display: block;
+	text-overflow: ellipsis;
+}
+
 .ghost {
 	position: fixed;
 	display: flex;

routes/mix/handler.go

@@ -3,7 +3,6 @@ package mix
 import (
 	"bytes"
 	"encoding/base64"
-	"encoding/json"
 	"github.com/sharat87/httpbun/assets"
 	"github.com/sharat87/httpbun/exchange"
 	"github.com/sharat87/httpbun/response"
@@ -42,46 +41,6 @@ var pairValueDirectives = map[string]any{
 	"c": nil,
 }
 
-var templateFuncMap = template.FuncMap{
-	"seq": func(args ...int) []int {
-		var start, end, delta int
-		switch len(args) {
-		case 1:
-			start = 0
-			end = args[0]
-			delta = 1
-		case 2:
-			start = args[0]
-			end = args[1]
-			delta = 1
-		case 3:
-			start = args[0]
-			end = args[1]
-			delta = args[2]
-		}
-		if (start > end && delta > 0) || (start < end && delta < 0) {
-			delta = -delta
-		}
-		var seq []int
-		for i := start; i != end; i += delta {
-			seq = append(seq, i)
-		}
-		return seq
-	},
-	"toJSON": func(v any) string {
-		buffer := &bytes.Buffer{}
-		encoder := json.NewEncoder(buffer)
-		encoder.SetEscapeHTML(false)
-		encoder.SetIndent("", "  ")
-		err := encoder.Encode(v)
-		if err != nil {
-			log.Printf("Error encoding JSON: %v", err)
-			return err.Error()
-		}
-		return string(bytes.TrimSpace(buffer.Bytes()))
-	},
-}
-
 func computeMixEntries(ex *exchange.Exchange) ([]entry, error) {
 	// We need raw path here, with percent encoding intact.
 	path := strings.TrimPrefix(ex.RoutedRawPath, "/mix")

routes/mix/template_context.go

@@ -0,0 +1,59 @@
+package mix
+
+import (
+	"bytes"
+	"encoding/json"
+	"log"
+	"text/template"
+)
+
+var templateFuncMap = template.FuncMap{
+	"seq":    tplFuncSeq,
+	"repeat": tplFuncSeq,
+	"toJSON": func(v any) string {
+		buffer := &bytes.Buffer{}
+		encoder := json.NewEncoder(buffer)
+		encoder.SetEscapeHTML(false)
+		encoder.SetIndent("", "  ")
+		err := encoder.Encode(v)
+		if err != nil {
+			log.Printf("Error encoding JSON: %v", err)
+			return err.Error()
+		}
+		return string(bytes.TrimSpace(buffer.Bytes()))
+	},
+}
+
+func tplFuncSeq(args ...int) []map[string]any {
+	var start, end, delta int
+	switch len(args) {
+	case 1:
+		start = 0
+		end = args[0]
+		delta = 1
+	case 2:
+		start = args[0]
+		end = args[1]
+		delta = 1
+	case 3:
+		start = args[0]
+		end = args[1]
+		delta = args[2]
+	}
+	if (start > end && delta > 0) || (start < end && delta < 0) {
+		delta = -delta
+	}
+	var seq []map[string]any
+	for i := start; i != end; i += delta {
+		seq = append(seq, map[string]any{
+			"N":       i,
+			"IsFirst": false,
+			"IsLast":  false,
+		})
+	}
+	if len(seq) > 0 {
+		seq[0]["IsFirst"] = true
+		seq[len(seq)-1]["IsLast"] = true
+	}
+	return seq
+}