first-commit

modules/uri/uri.go

@@ -0,0 +1,42 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package uri
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+)
+
+// ErrURISchemeNotSupported represents a scheme error
+type ErrURISchemeNotSupported struct {
+	Scheme string
+}
+
+func (e ErrURISchemeNotSupported) Error() string {
+	return fmt.Sprintf("Unsupported scheme: %v", e.Scheme)
+}
+
+// Open open a local file or a remote file
+func Open(uriStr string) (io.ReadCloser, error) {
+	u, err := url.Parse(uriStr)
+	if err != nil {
+		return nil, err
+	}
+	switch strings.ToLower(u.Scheme) {
+	case "http", "https":
+		f, err := http.Get(uriStr)
+		if err != nil {
+			return nil, err
+		}
+		return f.Body, nil
+	case "file":
+		return os.Open(u.Path)
+	default:
+		return nil, ErrURISchemeNotSupported{Scheme: u.Scheme}
+	}
+}