* Use chrono for UTC/calendar conversion instead of hand-rolled copies
Replaces the hand-rolled civil_from_days / days_from_civil copies and the
Excel serial-date, FILETIME and logging/PDF date conversions with chrono as
a workspace dependency (default-features = false, std only, so wasm is
unaffected). Output formats are unchanged and pinned by the existing (and one
new) test. Excel's 1900 leap-year bug and the 1900/1904 systems keep their
explicit special cases; a small proleptic-Gregorian fallback covers years
outside chrono's NaiveDate range so no input changes behaviour or panics.
AGENTS.md now says time goes through chrono.
Follow-up to storytold/cadcraft#1785
* Never panic or reshape date output for clocks outside chrono's range
chrono's From<SystemTime> unwraps, so a clock past year 262143 panicked
inside the logger. logging::timestamp now uses the fallible
DateTime::from_timestamp and reads such a clock as the epoch, as the old
saturating code did.
iso_from_unix_secs fell back to the Unix epoch for timestamps chrono
rejects; it now keeps the proleptic Gregorian date civil_from_days gives,
restoring the pre-chrono result for supported out-of-range u64 inputs.
Years past 9999 are written with {:04} rather than %Y (which prepends a
'+') in logging::timestamp, iso_from_unix_secs, docbin::filetime_iso and
odt::now_iso, so byte-for-byte output is preserved.
filetime_iso gained a docstring; AGENTS.md's chrono bullet now notes the
narrow out-of-range fallback. Tests cover each boundary.
* Don't build an unrepresentable SystemTime in the far-future test
UNIX_EPOCH + Duration::from_secs(u64::MAX / 2) overflows Windows'
SystemTime and panicked before timestamp() ran, failing the Windows
test job. Build it with checked_add and only assert where it exists.
* Route out-of-range dates through chrono's 400-year cycle, not hand-rolled copies
The PR kept hand-rolled Hinnant `civil_fallback`/`days_from_civil_fallback`
copies for dates outside chrono's ±262143-year range, and AGENTS.md carved a
"narrow fallback" exception for them. That left calendar arithmetic outside
chrono after all.
Replace every copy with the Gregorian 400-year cycle (146_097 days): chrono
converts the day/year within one cycle and whole cycles are added back via i128
(so i64::MIN/MAX can't overflow). This keeps chrono as the only calendar logic
and reproduces the pre-chrono proleptic Gregorian result for every value:
- engine cmd/mod.rs `civil_from_days` (reached by the system clock and by
`iso_from_unix_secs` for a u64 seconds count past chrono's range).
- engine cmd/controls.rs `days_from_civil` and `days_in_month` (`days_in_month`
now uses `rem_euclid(400)` since month lengths repeat every 400 years).
- formats sheet.rs `civil` and docx chart.rs `civil` (Excel serials).
Outputs are unchanged: verified the cycle result equals the old formula over a
wide range and at the extremes with a scratch chrono program. New tests pin
accepted inputs past chrono's range on both sides of the epoch, through the
public/lib entry points and the private converters, with values from the old
formula. Removed the AGENTS.md "narrow fallback" exception.
pdf/lib.rs `civil` is left as-is: its only caller is the live system clock and
its year is clamped to 0..9999 by the PDF DateTime, so the epoch fallback past
year 262143 is the accepted live-clock behavior, not a hand-rolled copy.
Tested: cargo test -p wordcraft-engine -p wordcraft-formats -p wordcraft-docx;
fmt --check; clippy --all-targets -D warnings.
* logging/docbin/odt/pdf: keep extended-year dates, no epoch fallback
FredApps (CHANGES_REQUESTED) showed `DateTime::from_timestamp(..).unwrap_or_default()`
changes output: a timestamp the old code converted past chrono's year 262143 range now
collapsed to 1970-01-01 instead of its real proleptic-Gregorian date. The same regression
exists wherever the PR swapped a hand-rolled converter for the epoch fallback. Fix every
such site to keep chrono as the only calendar logic via the 400-year Gregorian cycle
(146_097 days): chrono converts the day within one cycle, whole cycles carry in the year
(i128, saturated into i64). Verified the cycle result equals the old formula across a wide
range and at the extremes.
- apps/wordcraft/src/logging.rs `timestamp`: added `civil_from_days(u64)` (cycle), kept the
pre-1970 epoch clamp (`duration_since`) and the milliseconds/time-of-day format exactly.
Pins: UNIX_EPOCH + 10_000_000_000_000 s -> 318857-05-20T17:46:40.000Z (FredApps' example,
was 1970-...); the checked_add u64::MAX/2 s fixture now asserts 292277026596-12-04T15:30:07.000Z
instead of the epoch.
- crates/docbin/src/metadata.rs `filetime_iso`: restored a cycle-based `civil(i64)` instead
of `from_timestamp(..)?` (which dropped the field past chrono's range). A u64 FILETIME caps
at ~1.83e12 unix s (year 60056), inside chrono's range, so no reachable value changes; pinned
the largest FILETIME (u64::MAX) -> 60056-05-28T05:36:10Z to lock the extended-year path.
- crates/formats/src/odt.rs `now_iso`: reuse the crate's existing cycle converter
`sheet::civil` (made pub(crate)) rather than the epoch fallback.
- crates/pdf/src/lib.rs `civil`: cycle converter; year returned unclamped and the caller's
existing PDF DateTime 0..=9999 year clamp is kept exactly, so month/day/time of a far-future
clock survive. Pins: civil(10_000_000_000_000)=(318857,5,20,17,46,40),
civil(-10_000_000_000_000)=(-314918,8,13,6,13,20), civil(253_402_300_800)=(10000,1,1,0,0,0).
engine `cmd/mod.rs::iso_from_unix_secs` already uses the cycle fallback (last round); unchanged.
* Don't build a year-318857 SystemTime unchecked in the logging test
Windows' SystemTime only reaches about year 30828, so
UNIX_EPOCH + Duration::from_secs(10_000_000_000_000) panicked before
timestamp() ran and failed the Windows test job. Build it with
checked_add and assert where the platform can hold it. The year-10000
case fits everywhere and stays unconditional.
* Name the 400-year range extension as the one exception to the time rule
The rule said never to hand-roll calendar math, but the range fix
(shifting by whole 400-year Gregorian cycles so dates past chrono's year
range keep their old output) is cycle arithmetic, so the rule and the code
disagreed. The rule now names that exception: the library still computes
month, day and time, and only whole cycles are carried in the year.
* Say the library computes month and day; time-of-day is plain arithmetic
Narrows the range-extension wording: the date library computes the
calendar fields, and splitting seconds into hours, minutes and seconds
is ordinary arithmetic, which is what the code does.
* Content controls: typed text takes the control's formatting, in any language
Text typed in place of a content control's placeholder takes the
control's own run properties (w:sdtPr/w:rPr, ECMA-376 §17.5.2.27), as
in Word: in a protected form filled in Word for Mac, all 17 entered
values carry the style their control's rPr names. WordCraft kept that
rPr only as XML to write back and gave typed text the placeholder's
formatting minus the placeholder style.
It also knew the placeholder style only by its English id,
PlaceholderText. German Word writes Platzhaltertext (the name stays
"Placeholder Text"), so in forms from German Word every entry stayed
grey, on screen and in the saved file, and restoring a placeholder
added a second Placeholder Text style. The style is now found by its
built-in name.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Content controls: typing drops a showing placeholder's own style
A control without run properties that shows its placeholder: text typed
over it drops the placeholder run's character style whatever its id
and name. Word localizes only the placeholder style's id, but another
program may localize its name too, and the name lookup then misses it.
Restoring a placeholder and new controls keep the name lookup.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
* Content controls: keep, show and edit w:sdt (#381)
Content controls are now part of the model instead of being unwrapped on open:
ControlStart/ControlEnd markers around their content (inline or around whole
paragraphs), with table, row and cell wraps for controls around tables,
repeating-section rows and cells. All sdtPr properties round-trip (title, tag,
id, lock, placeholder, temporary, rich/plain text, w14 check box, combo box,
drop-down list, date, picture, building block gallery, w15 repeating
sections); unknown children are kept verbatim. The writer plans per block list
which controls are written inline and which around blocks so the XML always
nests, and drops markers that lost their partner.
Editing: deletions keep a marker whose partner is outside the range, typing
replaces a shown placeholder, emptying a control brings it back, sdtLocked and
contentLocked refuse with a status message. Developer tab with insert
commands, Design Mode, Properties dialog; frames and title tabs on the page,
check boxes toggle on click, list and calendar pickers.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* #381: refresh catalog count and parity checklist after rebase
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
