* fix(parse): accept spaces between stream and its line break
Microsoft Reporting Services writes `stream \r\n`, a space before the line break.
hayro-syntax and pdfcraft-cos took the stream data to start at the space, so the
content stream failed to inflate: the page rendered blank (white, or black with
inverted colours) and an edited save corrupted the stream. Spaces and tabs are now
skipped, but only when a line break follows.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
* Number the stream end-of-line patch (20), as vendor/README does
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
The PDF/A device-colour scan split content streams only on spaces and
line feeds, so `0 0 0 1 k` written with carriage returns, tabs, form
feeds or NULs between the tokens went unseen: verify reported no
DeviceCMYK, and convert gave the CMYK page an sRGB output intent.
Split on all six whitespace characters of ISO 32000-2 §7.2.3, using the
lexer's own `is_whitespace` (now exported from pdfcraft-cos) instead of
a second list.
Adds tests::device_colour_is_found_after_any_whitespace, which fails
before this change; its gray and RGB controls check that those pages
still get the sRGB output intent.
* M1: stream data read from a file points into the file instead of being copied
Every stream COS loaded was copied out of the document's bytes
(`data[start..end].to_vec()`) and kept in the object cache until the document
closed. Anything that reads every object therefore left a second copy of all
stream data behind. That includes a full save, which edits needing a rewrite
(repaired files, security changes, redaction) run on every change. A full save
of a 208 MB document left 208 MB cached on it.
`Stream::raw` is now `Bytes`: owned bytes, or a range of a larger shared
buffer. Streams parsed from a document's own bytes are ranges of that buffer,
which the document keeps anyway. Decrypted and newly built streams own their
bytes as before. A stream added to a document from another document's file gets
its own copy of just its bytes (`Document::set`/`add`), so it never keeps
another whole file alive.
Results, measured with an exact heap counter:
- A full save of a 208 MB document leaves 0.2 MB cached instead of 208.2 MB.
- The first full save of a freshly opened document is about twice as fast:
10 → 5 ms at 40 MB, 38 → 21 ms at 200 MB.
Output is identical: 68 incremental and full saves of five originals,
encrypted ones included, hash the same before and after.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* M1: the full-save capacity test (#523) builds its stream from Bytes
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
