github-featured / unstructured-io--unstructured

发布

0 发布 249 Git 标签

RSS 订阅源
  • 0.22.12 6ada488f6c
    比较

    fix: pdfminer drops extractable text (#4310)

    frostbyte_neo 发布于 2026-04-01 18:51:00 +00:00

    Note

    Medium Risk
    Changes pdfminer integration to override CID font/CMap handling and
    introduces custom stream decoding/parsing, which can affect text
    extraction behavior and performance on diverse PDFs (mitigated by
    size/mapping caps).

    Overview
    Fixes PDFs where body text was silently dropped because CIDFonts
    used an embedded Encoding CMap stream that pdfminer.six doesn’t
    resolve.

    Adds a bounded embedded-CMap decoder/parser and wires it in via
    CustomPDFCIDFont + CustomPDFResourceManager so init_pdfminer()
    constructs CID fonts with a parsed CMap (including WMode), with
    DoS-oriented caps on decompression and total mappings.

    Updates tests with a new fixture-driven regression for both FAST and
    HI_RES strategies plus targeted unit tests for CMap parsing/stream
    decoding, and bumps version to 0.22.12 with a changelog entry.

    Written by Cursor
    Bugbot     for commit
    4326b15f6c400e81112f894576941d28fb150da7. This will update automatically
    on new commits. Configure
    here.

    Co-authored-by: Claude Opus 4.6 (1M context) noreply@anthropic.com

    下载附件