Keep RGBA decoding unchanged while satisfying the current Clippy lint.
Include the separately verified Rustls 0.23.46 lock prerequisite.
Co-authored-by: sanyamsingh001 <314051937+sanyamsingh001@users.noreply.github.com>
Co-authored-by: Codex <codex@openai.com>
Gap 12 of docs/gaps.md: until rendering is measured, every claim about its quality is a judgement.
Text extraction had an oracle and written output had qpdf; rendering had nothing.
`cargo xtask render-oracle` renders page 1 of every corpus file with our CLI and with Poppler's
pdftoppm and reports how far apart they are. The metric is the point. A raw pixel comparison is
useless here -- two correct renderers disagree on every glyph edge, so it calls a perfect page
badly wrong and says nothing about whether a shading is missing. `pixels::compare` counts a pixel
as differing only when it differs from every pixel in the other image's 3x3 neighbourhood by more
than a tolerance, in both directions, taking the worse. A one-pixel shift is forgiven; absent or
miscoloured content is not.
First reading, 250 files at 72 dpi, tolerance 8: 229 compared, median 0.89%, mean 2.16%, p90
5.35%, 25 within 0.1%. It reports rather than gates -- the corpus is not on CI, and a first
reading of a borrowed renderer is a baseline to improve on, not a bar to clear. The worst results
cluster on JBIG2 `bitmap-*` files and on ZapfDingbats, which aims the renderer work at something
specific for the first time. 15 files could not be compared because the two renderers round the
page box to different pixel sizes; they are reported as unmeasurable rather than scored.
Verified against the knob's bounds end to end: tolerance 255 scores every file 0.00%, tolerance 0
takes the median to 0.95% and p90 to 26.36%.
Also turns on `extract_type3_shared_xobjects_matches_poppler_pixels`, which had never run anywhere.
Poppler is now installed on the Linux runner, and the test is version-robust by construction --
both sides of its comparison go through the same pdftoppm, so it is about our two documents rather
than about Poppler's output. Verified in all three states: runs and passes with pdftoppm present,
skips without it, fails without it when PDFCRAFT_ORACLES_REQUIRED is set.
`run_capture` keeps its exact behaviour, including leaving the buffer empty on non-UTF-8 output;
the byte-oriented capture an image needs is a second entry point on the same timeout logic.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Every test that wanted an external oracle probed for it by hand and chose for itself what to do
when it was missing. The common choice -- print a line and return -- reports as a pass, so a suite
with no oracles installed looked exactly like one in which every oracle agreed.
That was not hypothetical. No CI runner installed qpdf, so `qpdf_agrees` had never executed on a
runner, while README.md said saved output was "independently checked with qpdf". For R2-R4 that
test is the only check of owner-password authentication (Algorithm 7) that does not go through our
own code.
`pdfcraft-oracle` holds the probes and one rule: a missing oracle is a declared skip or a failure,
never a silent pass. `PDFCRAFT_ORACLES_REQUIRED` picks which, on the same convention as
`CRAFT_FONTS_REQUIRED`. CI installs qpdf and sets it, so a skip notice there is now a red build.
The crate has no panicking path of its own; `or_skip!` expands its assert into the caller, which
is test code.
Verified by running the qpdf tests against qpdf 12.4.2 for the first time -- they pass, so the
README claim is now both enforced and true. Both gate directions were watched: absent and
unrequired skips with a notice, absent and required fails with the install command in the message.
Only qpdf is installed in CI, because it is the only tool the test job uses. The Poppler pixel
comparison in crates/organize stays ignored until a change turns it on and verifies it there.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Giuseppe Silano