Encode/Decode Methods

Base64 Encoding

Base64 is a binary-to-text encoding scheme that is used to transmit binary data over channels the only reliably support text content. Among Base64's uses are:

Embed images or other binary assets in HTML files.
Encode user credentials for HTTP Basic Authentication

`Base64Decode`

Decode a Base64-encoded string or single-byte integer vector.

Syntax	`out←{cpo} HttpCommand.Base64Decode b64`
`b64`	Either a single-byte integer or character vector to be decoded
`cpo`	(optional) If set to 0 or not supplied, Base64Decode will perform UTF-8 conversion on the result. If set to 1, no conversion will be performed. In almost all cases, you can ignore (and not supply) this argument.
`out`	A character vector representing the decodes base-64 right argument.
Example(s)	`HttpCommand.Base64Decode 'RHlhbG9nIOKNuuKNtOKMig=='` `Dyalog ⍺⍴⌊`

`Base64Encode`

Base64 encode a string or integer vector.

Syntax	`b64←{cpo} HttpCommand.Base64Encode in`
`in`	Either an integer or character vector to be encoded
`cpo`	(optional) If set to 0 or not supplied, Base64Encode will first perform UTF-8 conversion on a character argument. If set to 1, no conversion will be performed. In almost all cases, you can ignore (and not supply) this argument.
`b64`	A character vector representing the base-64 encoding of the right argument.
Example(s)	`HttpCommand.Base64Decode 'RHlhbG9nIOKNuuKNtOKMig=='` `Dyalog ⍺⍴⌊`

URL Encoding

URLs can only be sent over the Internet using the ASCII character set. However, URLs often contain characters outside the ASCII character set. URL encoding converts strings to a format acceptable for transmission over the Internet. URLEncoding is also used to encode payloads for content-type 'application/x-www-form-urlencoded'.

`UrlDecode`

URLDecode a URLEncoded string.

Syntax	`out←HttpCommand.UrlDecode in`
`in`	A URLEncoded string
`out`	The URLDecoding of `in`.
Example(s)	`HttpCommand.UrlDecode 'Dyalog%20%E2%8D%BA%E2%8D%B4%E2%8C%8A'` `Dyalog ⍺⍴⌊` `HttpCommand.UrlDecode 'name=Donald%20Duck'` `name=Donald Duck` `HttpCommand.UrlDecode 'first=Donald&last=O%27Mallard'` `first=Donald&last=O'Mallard`

`UrlEncode`

URLEncode a string or a set of name/value pairs.

Syntax	`out←{name} HttpCommand.UrlEncode in`
`in`	One of: a simple character vector to be URLEncoded a set of name/value pairs
`name`	(optional) The name for the URLEncoded right argument. Applies only in the case where `in` is a simple character vector.
`out`	The URLEncoding of `in`.
Example(s)	`HttpCommand.UrlEncode 'Dyalog ⍺⍴⌊'` `Dyalog%20%E2%8D%BA%E2%8D%B4%E2%8C%8A` `'name' HttpCommand.UrlEncode 'Donald Duck'` `name=Donald%20Duck` `HttpCommand.UrlEncode ('first' 'Donald') ('last' 'O''Mallard')` `first=Donald&last=O%27Mallard`