Add port of url.Redact to satisfy go1.14 compatibility

.circleci/config.yml

@@ -165,12 +165,12 @@ workflows:
           context: go-getter
           matrix:
             parameters:
-              go-version: ["1.15.13"]
+              go-version: ["1.15.13", "1.14.15"]
           name: linux-test-go-<< matrix.go-version >>
       - windows-tests:
           context: go-getter
           matrix:
             parameters:
-              go-version: ["1.15.13"]
+              go-version: ["1.15.13", "1.14.15"]
               gotestsum-version: ["0.4.1"]
           name: win-test-go-<< matrix.go-version >>

client.go

@@ -298,7 +298,7 @@ func (c *Client) Get() error {
 		// if we're specifying a subdir.
 		err := g.Get(dst, u)
 		if err != nil {
-			err = fmt.Errorf("error downloading '%s': %s", u.Redacted(), err)
+			err = fmt.Errorf("error downloading '%s': %s", RedactURL(u), err)
 			return err
 		}
 	}

url.go

@@ -0,0 +1,19 @@
+package getter
+
+import "net/url"
+
+// RedactURL is a port of url.Redacted from the standard library,
+// which is like url.String but replaces any password with "xxxxx".
+// Only the password in u.URL is redacted. This allows the library
+// to maintain compatibility with go1.14.
+func RedactURL(u *url.URL) string {
+	if u == nil {
+		return ""
+	}
+
+	ru := *u
+	if _, has := ru.User.Password(); has {
+		ru.User = url.UserPassword(ru.User.Username(), "xxxxx")
+	}
+	return ru.String()
+}

url_test.go

@@ -0,0 +1,73 @@
+package getter
+
+import (
+	"net/url"
+	"testing"
+)
+
+func TestRedactURL(t *testing.T) {
+	cases := []struct {
+		name string
+		url  *url.URL
+		want string
+	}{
+		{
+			name: "non-blank Password",
+			url: &url.URL{
+				Scheme: "http",
+				Host:   "host.tld",
+				Path:   "this:that",
+				User:   url.UserPassword("user", "password"),
+			},
+			want: "http://user:xxxxx@host.tld/this:that",
+		},
+		{
+			name: "blank Password",
+			url: &url.URL{
+				Scheme: "http",
+				Host:   "host.tld",
+				Path:   "this:that",
+				User:   url.User("user"),
+			},
+			want: "http://user@host.tld/this:that",
+		},
+		{
+			name: "nil User",
+			url: &url.URL{
+				Scheme: "http",
+				Host:   "host.tld",
+				Path:   "this:that",
+				User:   url.UserPassword("", "password"),
+			},
+			want: "http://:xxxxx@host.tld/this:that",
+		},
+		{
+			name: "blank Username, blank Password",
+			url: &url.URL{
+				Scheme: "http",
+				Host:   "host.tld",
+				Path:   "this:that",
+			},
+			want: "http://host.tld/this:that",
+		},
+		{
+			name: "empty URL",
+			url:  &url.URL{},
+			want: "",
+		},
+		{
+			name: "nil URL",
+			url:  nil,
+			want: "",
+		},
+	}
+
+	for _, tt := range cases {
+		t := t
+		t.Run(tt.name, func(t *testing.T) {
+			if g, w := RedactURL(tt.url), tt.want; g != w {
+				t.Fatalf("got: %q\nwant: %q", g, w)
+			}
+		})
+	}
+}