Nmingott: importing material

2025-05-12T20:38:49Z

importing material

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* One of the use of base64 file is to convert binary files into text files and, for example, send them via mail.
* This is an example of what you get if you watch inside a base64 file

<code>UEsDBAoAAAAAAEZcOFMAAAAAAAAAAAAAAAAIABwAdGVzdERpci9VVAkAA5ObTWHPn01hdXgLAAEE
6AMAAAToAwAAUEsDBAoAAAAAAERcOFMgMDo2BgAAAAYAAAARABwAdGVzdERpci90ZXN0MS50eHRV
VAkAA4+bTWGIm01hdXgLAAEE6AMAAAToAwAAaGVsbG8KUEsDBAoAAAAAAElcOFOQoBAeBwAAAAcA
AAARABwAdGVzdERpci90ZXN0Mi50eHRVVAkAA5qbTWGTm01hdXgLAAEE6AMAAAToAwAAaGVsbG8y
ClBLAQIeAwoAAAAAAEZcOFMAAAAAAAAAAAAAAAAIABgAAAAAAAAAEADtQQAAAAB0ZXN0RGlyL1VU</code>

=== Encode a file into new file Base64 ===

* The Linux/MacOSX way of doing such conversion is:

$> base64 foo.dat > foo.dat.b64

* In Cuis you do:

inFile _ '/home/p/foo.dat'.
file64 _ '/home/p/foo.dat.b64'.
rs1 _ inFile asFileEntry readStream useBytes.
rs2 _ file64 asFileEntry forceWriteStream .
Base64MimeConverter mimeEncode: rs1 to: rs2.
rs1 close. rs2 close.

=== Decode a Base64 file into a new file ===

* You can do this in Linux/MacOSX with

$> base64 -d foo.dat.b64 > foo.dat

* In Cuis you do:

file64 _ '/home/p/foo.dat.b64'.
outFile _ '/home/p/foo.dat'.
rs1 _ file64 asFileEntry readStream.
rs2 _ outFile asFileEntry forceWriteStream useBytes.
Base64MimeConverter mimeDecode: rs1 to: rs2.
rs1 close. rs2 close.

Convert a file to/from Base64 - Revision history

Nmingott: importing material