encode_base64
| Definition: | string res = encode_base64(sequence src, integer wrap_column=0) |
| Description: |
Convert data to a base64 encoded string.
src: a (binary) string or sequence of (integer) bytes #0..#FF, ie no float/string/sequence elements. wrap_column: If non-zero, "\r\n" is inserted between every wrap_column bytes. |
| pwa/p2js: | Supported. |
| Notes: |
The result should be broken into lines of no more than 76 characters before transmission, according to RFC 2045 (Base64 transfer encoding for MIME), and in most cases specifying a wrap_column of 76 does exactly what is needed. Equivalently, the input could theoretically be broken into chunks of 57 bytes, before being passed to this routine, though in truth I only really mention that to help in understanding of the ratios between input and output sizes (57 = 19*3, 76 = 19*4). |
| Implementation: | See builtins\base64.e (an autoinclude) |
| See Also: | decode_base64 |