diff options
Diffstat (limited to 'tags.go')
| -rw-r--r-- | tags.go | 88 |
1 files changed, 88 insertions, 0 deletions
@@ -0,0 +1,88 @@ +// Should be compiled to binary to be used as CGI script +package main + +import ( + "fmt" + "html" + "io/fs" + "net/url" + "os" + "path/filepath" + "regexp" + "strings" +) + +func extractTitle(content string) string { + titleRegex := regexp.MustCompile(`(?i)<title>(.*?)</title>`) + matches := titleRegex.FindStringSubmatch(content) + if len(matches) > 1 { + return matches[1] + } + return "Без названия" +} + +func main() { + // CGI header + fmt.Println("Content-Type: text/html; charset=utf-8") + fmt.Println() + + // Получаем query string из окружения + rawQuery := os.Getenv("QUERY_STRING") + values, _ := url.ParseQuery(rawQuery) + tag := values.Get("tag") + if tag == "" { + fmt.Println("<p>Error: no tag specified</p>") + return + } + + postsDir := "../posts" + tagRegex := regexp.MustCompile(`data-tag="` + regexp.QuoteMeta(tag) + `"`) + + type Post struct { + Path string + Title string + } + + var matches []Post + + filepath.WalkDir(postsDir, func(path string, d fs.DirEntry, err error) error { + if err != nil { + return nil + } + if !d.IsDir() { + contentBytes, err := os.ReadFile(path) + if err == nil && tagRegex.Match(contentBytes) { + content := string(contentBytes) + title := extractTitle(content) + relPath := "/posts/" + filepath.Base(path) + matches = append(matches, Post{Path: relPath, Title: title}) + } + } + return nil + }) + + // Составляем <ul> + var b strings.Builder + b.WriteString("<ul>\n") + for _, post := range matches { + fmt.Fprintf(&b, "<li><a class=\"text-sm underline\" href=\"%s\">%s</a></li>\n", + html.EscapeString(post.Path), + html.EscapeString(post.Title)) + } + b.WriteString("</ul>") + + // Читаем шаблон + templateBytes, err := os.ReadFile("../templates/tags.html") + if err != nil { + fmt.Println("<p>Error: template not found</p>") + return + } + template := string(templateBytes) + + // Заменяем маркеры + output := strings.Replace(template, "<!-- %cgi.list% -->", b.String(), 1) + output = strings.Replace(output, "<!-- %cgi.tag% -->", html.EscapeString(tag), 1) + + // Отдаём результат + fmt.Print(output) +}
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