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binascii.hexlify by youknowone · Pull Request #5820 · RustPython/RustPython

youknowone

Walkthrough

The updates enhance the hexlify function in the binascii module to support optional separator insertion between groups of hex-encoded bytes. Corresponding test cases are updated to remove expected failure markers, reflecting the improved functionality. The function and struct signatures are adjusted to accommodate these changes.

Changes

File(s) Change Summary
stdlib/src/binascii.rs Extended hexlify to accept optional separator and interval arguments; updated function and struct signatures.
Lib/test/test_binascii.py Removed @unittest.expectedFailure and related comments from two test methods.

Sequence Diagram(s)

sequenceDiagram
    participant Caller
    participant binascii.hexlify
    participant Validator

    Caller->>binascii.hexlify: Call with data, sep (optional), bytes_per_sep (optional)
    binascii.hexlify->>Validator: Validate sep (if provided)
    Validator-->>binascii.hexlify: Return validation result
    binascii.hexlify->>binascii.hexlify: Hexlify data, insert sep at intervals (if specified)
    binascii.hexlify-->>Caller: Return hexlified bytes (with or without separators)
Loading

Poem

In the land of hex, a new path appears,
With separators dancing between bytey peers.
No longer expected to stumble or fail,
The tests now hop on a seamless trail.
Rusty code and Python unite,
Hexlify shines ever so bright!
🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 5d68313 and eafdfe1.

📒 Files selected for processing (2)
  • Lib/test/test_binascii.py (0 hunks)
  • stdlib/src/binascii.rs (2 hunks)
💤 Files with no reviewable changes (1)
  • Lib/test/test_binascii.py
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🔇 Additional comments (3)
stdlib/src/binascii.rs (3)

46-161: Well-implemented enhancement to support hex separators!

The implementation correctly handles the optional separator insertion with both positive and negative bytes_per_sep values, matching Python's behavior. The error validation, optimization for simple cases, and pre-allocation of the result vector are all excellent design choices.

477-477: Good type broadening for quoted-printable encoding!

Changing from ArgAsciiBuffer to ArgBytesLike correctly allows the function to accept any bytes-like input, which aligns with Python's binascii.b2a_qp behavior that can encode any binary data.

52-53: Verify the default value for bytes_per_sep matches Python's behavior.

The implementation uses a default value of 1 for bytes_per_sep. Please ensure this matches Python's binascii.hexlify behavior.

What is the default value of bytes_per_sep parameter in Python's binascii.hexlify function when a separator is provided?
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