This stuff would be great
improved access to document level objects and data
bookmarks?
outline?
articles?
viewer prefs?
Improve the speed of Encoding#to_utf8
Tweak encoding mappings to differentiate between bytes that are invalid for an encoding, and bytes that are unchanged. poppler seems to do this in a quite reasonable way. Original Encoding -> Glyph Names -> Unicode. As of 0.6 we go straight from the Original encoding to Unicode.
detect when a font’s encoding is a CMap (generally used for pre-Unicode, multibyte asian encodings), and display a user friendly error
Improve interpretation of non content stream data (ie metadata). recognise dates, etc
This might be useful, more research required
Support for CJK text (convert to UTF-8 like all other encodings. See Section 5.9 of the PDF spec)
Will require significantly improved handling of CMaps, including creating a bunch of predefined ones
Work out why specs/data/zlib*.pdf isn’t parsed correctly when all the major PDF viewers can display it correctly
Ship some extra receivers in the standard package, particuarly ones that are useful for running rspec over generated PDF files
Add support for additional filters: CCITTFaxDecode, JBIG2Decode, DCTDecode, JPXDecode
Add support for additional encodings:
Identity-V(I think this relates to vertical text. Not sure how we’d support it sensibly)
Investigate how R->L text is handled
fix all callbacks to only ever return basic ruby objects (strings, ints, attays, symbols, hashes, etc). No PDF::Reader::Reference or PDF::Reader::Font, etc.
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