encoding/base64: add examples for Encode/Decode
Fixes #37595
Change-Id: I83e5f6105748a0a9238322a4f7ec4b0bbf61a263
Reviewed-on: https://go-review.googlesource.com/c/go/+/348394
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Cherry Mui <cherryyz@google.com>
diff --git a/src/encoding/base64/example_test.go b/src/encoding/base64/example_test.go
index 73f119a..61a3adc 100644
--- a/src/encoding/base64/example_test.go
+++ b/src/encoding/base64/example_test.go
@@ -35,6 +35,15 @@
// YW55ICsgb2xkICYgZGF0YQ==
}
+func ExampleEncoding_Encode() {
+ data := []byte("Hello, world!")
+ dst := make([]byte, base64.StdEncoding.EncodedLen(len(data)))
+ base64.StdEncoding.Encode(dst, data)
+ fmt.Println(string(dst))
+ // Output:
+ // SGVsbG8sIHdvcmxkIQ==
+}
+
func ExampleEncoding_DecodeString() {
str := "c29tZSBkYXRhIHdpdGggACBhbmQg77u/"
data, err := base64.StdEncoding.DecodeString(str)
@@ -47,6 +56,20 @@
// "some data with \x00 and \ufeff"
}
+func ExampleEncoding_Decode() {
+ str := "SGVsbG8sIHdvcmxkIQ=="
+ dst := make([]byte, base64.StdEncoding.DecodedLen(len(str)))
+ n, err := base64.StdEncoding.Decode(dst, []byte(str))
+ if err != nil {
+ fmt.Println("decode error:", err)
+ return
+ }
+ dst = dst[:n]
+ fmt.Printf("%q\n", dst)
+ // Output:
+ // "Hello, world!"
+}
+
func ExampleNewEncoder() {
input := []byte("foo\x00bar")
encoder := base64.NewEncoder(base64.StdEncoding, os.Stdout)
