replace zxq.co/ripple/hanayo

vendor/github.com/johnniedoe/contrib/static/static.go

@@ -0,0 +1,62 @@
+package static
+
+import (
+	"net/http"
+	"os"
+	"path"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+type ServeFileSystem interface {
+	http.FileSystem
+	Exists(prefix string, path string) bool
+}
+
+type localFileSystem struct {
+	http.FileSystem
+	root    string
+	indexes bool
+}
+
+func LocalFile(root string, indexes bool) *localFileSystem {
+	return &localFileSystem{
+		FileSystem: gin.Dir(root, indexes),
+		root:       root,
+		indexes:    indexes,
+	}
+}
+
+func (l *localFileSystem) Exists(prefix string, filepath string) bool {
+	if p := strings.TrimPrefix(filepath, prefix); len(p) < len(filepath) {
+		name := path.Join(l.root, p)
+		stats, err := os.Stat(name)
+		if err != nil {
+			return false
+		}
+		if !l.indexes && stats.IsDir() {
+			return false
+		}
+		return true
+	}
+	return false
+}
+
+func ServeRoot(urlPrefix, root string) gin.HandlerFunc {
+	return Serve(urlPrefix, LocalFile(root, false))
+}
+
+// Static returns a middleware handler that serves static files in the given directory.
+func Serve(urlPrefix string, fs ServeFileSystem) gin.HandlerFunc {
+	fileserver := http.FileServer(fs)
+	if urlPrefix != "" {
+		fileserver = http.StripPrefix(urlPrefix, fileserver)
+	}
+	return func(c *gin.Context) {
+		if fs.Exists(urlPrefix, c.Request.URL.Path) {
+			fileserver.ServeHTTP(c.Writer, c.Request)
+			c.Abort()
+		}
+	}
+}