chore(deps): bump lopdf from 0.36.0 to 0.40.0

[dependabot]

Bumps lopdf from 0.36.0 to 0.40.0.

Release notes

Sourced from lopdf's releases.

0.39.0

What's Changed

Improvements

• Add pdf decryption support that derived from pdftk by @​Mon-ius in J-F-Liu/lopdf#443
• Add font embedding support to Document API #219 by @​Rayato159 in J-F-Liu/lopdf#439
• Add load_with_password for encrypted PDFs by @​vysakh0 in J-F-Liu/lopdf#455
• Replace O(n×m) search_substring with O(n) linear algorithm by @​withzombies in J-F-Liu/lopdf#460
• Add load_metadata() by @​abimaelmartell in J-F-Liu/lopdf#459
• Support encrypted PDFs in metadata extraction API by @​abimaelmartell in J-F-Liu/lopdf#461

Fixes

• Fix font resource linkage missed in PR #439 by @​Rayato159 in J-F-Liu/lopdf#444
• Fix Handle Byte Order Marks in CMaps by @​CryZe in J-F-Liu/lopdf#450
• Fixed parsing of empty bfrange / bfchar sections in ToUnicode CMaps by @​RubyBit in J-F-Liu/lopdf#456
• Fix allow 'length' entry to be present for V=1 encryption by @​lukaszgemborowski in J-F-Liu/lopdf#457
• Fix get_page_images: do not fail if page does not contain XObject by @​lukaszgemborowski in J-F-Liu/lopdf#458

Thanks a lot to the new contributors:

• @​Rayato159 made their first contribution in J-F-Liu/lopdf#439
• @​CryZe made their first contribution in J-F-Liu/lopdf#450
• @​vysakh0 made their first contribution in J-F-Liu/lopdf#455
• @​RubyBit made their first contribution in J-F-Liu/lopdf#456
• @​lukaszgemborowski made their first contribution in J-F-Liu/lopdf#457
• @​withzombies made their first contribution in J-F-Liu/lopdf#460
• @​abimaelmartell made their first contribution in J-F-Liu/lopdf#459

0.38.0

See CHANGELOG.md for details.

Thanks a lot to the new contributors:

• @​nicolasdao made their first contribution in J-F-Liu/lopdf#435

0.37.0

See CHANGELOG.md for details.

Thanks a lot to the new contributors:

• @​oonxt made their first contribution in J-F-Liu/lopdf#421
• @​Gei0r made their first contribution in J-F-Liu/lopdf#423

Changelog

Sourced from lopdf's changelog.

[Unreleased]

Add

• Add LoadOptions struct with password, filter, and strict fields for extensible loading configuration
• Add load_with_options, load_from_with_options, and load_mem_with_options methods (sync + async)

Deprecate

• Deprecate load_filtered, load_from_with_password, load_mem_with_password in favor of _with_options variants

v0.38.0 (2025-08-26)

Add

• Add enhanced PDF decryption support for encrypted documents with empty passwords
• Add automatic decryption during document loading for better pdftk compatibility
• Add raw object extraction before parsing to handle encrypted content
• Add support for decrypting PDFs with compressed object streams
• Add comprehensive test suite for PDF decryption functionality
• Add assets/encrypted.pdf test file for decryption testing
• Add examples demonstrating decryption capabilities (test_decryption.rs, verify_decryption.rs)

Enhance

• Enhance Reader::read() to detect and handle encrypted PDFs automatically
• Enhance document loading to attempt empty password authentication by default
• Enhance object processing to decrypt objects after parsing
• Enhance support for encrypted PDFs containing object streams

Fix

• Fix encrypted object parsing by extracting raw bytes before decryption
• Fix object stream handling in encrypted documents
• Fix decryption workflow to match pdftk's approach

Implementation Details

• Modified src/reader.rs to add load_encrypted_document() method
• Added extract_raw_object() method for raw byte extraction
• Added parse_raw_object() method for parsing extracted bytes
• Store raw object bytes in Reader::raw_objects field for deferred decryption
• Process compressed objects from object streams after decryption

v0.37.0 (2025-08-08)

Add

... (truncated)

Commits

• 855e569 Release 0.40
• 845cd3d fix(cmap): bounds-check ArrayOfHexStrings index in bfrange lookup
• 087d3bc return Option via ok() instead of unwrap() for decode_text_string
• dec5ec6 fix: fails to decode PDFDocEncoding-encoded Strings in metadata
• caf963e fix: fall back to raw deflate when zlib checksum fails in encrypted PDFs
• 1afbb11 fix: skip leading whitespace when parsing objects in ObjStm
• dc2887a update src/reader to make clippy happy
• 3bc6a52 fix(reader): fall back to keeping ObjStm objects not tracked by xref
• 7ca36d7 fix(reader): use xref to resolve conflicting ObjStm entries in linearized PDFs
• 504f09e examples: Fix slice out of bounds panic
• Additional commits viewable in compare view

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