▼ |  | Net: PLT Networking Libraries

1 | URLs and HTTP
2 | URI Codec: Encoding and Decoding URIs
3 | FTP: Client Downloading
4 | Send URL: Opening a Web Browser
5 | SMTP: Sending E-Mail
6 | sendmail: Sending E-Mail
7 | Headers: Parsing and Constructing
8 | IMAP: Reading Mail
9 | POP3: Reading Mail
10 | MIME: Decoding Internet Data
11 | Base 64: Encoding and Decoding
12 | Quoted-Printable: Encoding and Decoding
13 | DNS: Domain Name Service Queries
14 | NNTP: Newsgroup Protocol
15 | TCP: Unit and Signature
16 | TCP Redirect: tcp^ via Channels
17 | SSL Unit: tcp^ via SSL
18 | CGI Scripts
19 | Cookie: HTTP Client Storage
| Bibliography
| Index

► | 11 | Base 64: Encoding and Decoding

11.1 | Functions
11.2 | Base64 Unit
11.3 | Base64 Signature

On this page:

11.1`` Functions
base64-encode
base64-decode
base64-encode-stream
base64-decode-stream
11.2`` Base64 Unit
base64@
11.3`` Base64 Signature
base64^

Version: 4.1.4
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### 11`` Base 64: Encoding and Decoding

(require net/base64)

The net/base64 library provides utilities for Base 64 (mime-standard) encoding and decoding.

#### 11.1`` Functions

(base64-encode bstr) → bytes?
bstr : bytes?

Consumes a byte string and returns its Base 64 encoding as a new byte string. The returned string is broken into 72-byte lines separated by CRLF combinations, and always ends with a CRLF combination unless the input is empty.

(base64-decode bstr) → bytes?
bstr : bytes?

Consumes a byte string and returns its Base 64 decoding as a new byte string.

(base64-encode-stream in out [newline-bstr]) → void?
in : input-port?
out : output-port?
newline-bstr : bytes? = #"\n"

Reads bytes from in and writes the encoded result to out, breaking the output into 72-character lines separated by newline-bstr, and ending with newline-bstr unless the input stream is empty. Note that the default newline-bstr is just #"\n", not #"\r\n". The procedure returns when it encounters an end-of-file from in.

(base64-decode-stream in out) → void?
in : input-port?
out : output-port?

Reads a Base 64 encoding from in and writes the decoded result to out. The procedure returns when it encounters an end-of-file or Base 64 terminator = from in.

#### 11.2`` Base64 Unit

(require net/base64-unit)

base64@ : unit?

Imports nothing, exports base64^.

#### 11.3`` Base64 Signature

(require net/base64-sig)

base64^ : signature

Includes everything exported by the net/base64 module.

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