September 2003
Intermediate to advanced
336 pages
7h 20m
English
Content preview from Effective XML: 50 Specific Ways to Improve Your XML
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Item 19. Encode Binary Data Using Quoted Printable and/or Base64
It's questionable whether including binary data in XML documents is a good idea at all. You're often better off just pointing to it with a URL. However, if you do have a genuine need to keep binary information together with text in one document, there are a number of straight forward algorithms for encoding arbitrary byte sequences as text. These include the following:
UUEncode
hexBinary
Quoted printable
Base64
Only the last two are worth considering. UUEncode is not precisely defined and varies significantly in practice between different implementations. hexBinary is simple to implement, but it at least doubles the size of every file. Quoted printable and Base64 are much more efficient. ...
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