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Fix/buffer base64 url decoding #777

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merged 3 commits into from
Jan 10, 2025
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richarddavison
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Issue # (if available)

Fixes #773

Description of changes

URL safe b64 encoded data failed to properly decode in LLRT. This PR uses memchr to use intrinsics/simd to check for occurrences of - or _ and replace them in place if found. Co-authored with @ainsleyrutterford who identified and proposed a fix for this issue! Many thanks

Checklist

  • Created unit tests in tests/unit and/or in Rust for my feature if needed
  • Ran make fix to format JS and apply Clippy auto fixes
  • Made sure my code didn't add any additional warnings: make check
  • Added relevant type info in types/ directory
  • Updated documentation if needed (API.md/README.md/Other)

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

@richarddavison richarddavison requested a review from Sytten January 9, 2025 15:13
@richarddavison richarddavison merged commit 5fd46ac into main Jan 10, 2025
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@richarddavison richarddavison deleted the fix/buffer-base64-url-decoding branch January 10, 2025 07:41
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Buffer.from(str, "base64") fails for URL safe base64 encoded strings
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