[ARROW-14274] [C++] Upgrade vendored base64 code

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29851
• Assignee: Yibo Cai
• Reporter: Yibo Cai
• Created: 11/Oct/21 10:19
• Updated: 11/Jan/23 08:38
• Resolved: 13/Oct/21 09:48

Description

The vendored base64 code looks suboptimal. [1]
We should at least upgrade to latest upstream code which improved a lot. [2]
Maybe adopt more optimized implementation if base64 performance matters for arrow. [3]

[1] https://github.com/apache/arrow/blob/master/cpp/src/arrow/vendored/base64.cpp#L49
[2] https://github.com/ReneNyffenegger/cpp-base64/blob/master/base64.cpp#L129
[3] https://github.com/aklomp/base64

Issue Links

• links to: GitHub Pull Request #11397