all repos — legit @ d879c2dfb088cb7911e322694c101fb0bdf7c0c0

web frontend for git, written in go 

template: line numbers for file view
Anirudh Oppiliappan x@icyphox.sh
Tue, 13 Dec 2022 11:50:39 +0530
commit

d879c2dfb088cb7911e322694c101fb0bdf7c0c0

parent

eda8b58d9f2e85f1bae92ce3b70f279b89031046

4 files changed, 41 insertions(+), 1 deletions(-)

jump to
M routes/template.go → routes/template.go 
@@ -1,10 +1,13 @@
 package routes
 
 import (
+	"bytes"
 	"html/template"
+	"io"
 	"log"
 	"net/http"
 	"path/filepath"
+	"strings"
 
 	"icyphox.sh/legit/git"
 )

@@ -40,12 +43,42 @@ return
 	}
 }
 
+func countLines(r io.Reader) (int, error) {
+	buf := make([]byte, 32*1024)
+	count := 0
+	nl := []byte{'\n'}
+
+	for {
+		c, err := r.Read(buf)
+		count += bytes.Count(buf[:c], nl)
+
+		switch {
+		case err == io.EOF:
+			return count, nil
+		case err != nil:
+			return 0, err
+		}
+	}
+}
+
 func (d *deps) showFile(content string, data map[string]any, w http.ResponseWriter) {
 	tpath := filepath.Join(d.c.Template.Dir, "*")
 	t := template.Must(template.ParseGlob(tpath))
 
-	// TODO: Process content here.
+	lc, err := countLines(strings.NewReader(content))
+	if err != nil {
+		// Non-fatal, we'll just skip showing line numbers in the template.
+		log.Printf("counting lines: %s", err)
+	}
+
+	lines := make([]int, lc)
+	if lc > 0 {
+		for i := range lines {
+			lines[i] = i + 1
+		}
+	}
 
+	data["linecount"] = lines
 	data["content"] = content
 	data["meta"] = d.c.Meta
M templates/file.html → templates/file.html 
@@ -9,6 +9,11 @@ </header>
   <body>
     {{ template "nav" . }}
     <main>
+    <pre>
+{{ range .linecount }}
+<a id="#L{{ . }}" href="#{{ . }}">{{ . }}</a>
+{{- end -}}
+    </pre>
       <pre>
 {{ .content }}
       </pre>
M templates/head.html → templates/head.html 
@@ -2,6 +2,7 @@ {{ define "head" }}
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="/static/style.css" type="text/css">
     <!-- other meta tags here -->
   </head>
 {{ end }}
M templates/nav.html → templates/nav.html 
@@ -9,6 +9,7 @@ {{ if .ref }}
     <li><a href="/{{ .name }}/tree/{{ .ref }}/">tree</a>
     <li><a href="/{{ .name }}/log/{{ .ref }}">log</a>
     {{ end }}
+    <li><a href="/{{ .name }}/refs">refs</a>
     </ul>
   </nav>
 {{ end }}