* Add craft-sheet: the cell positions, values and tables the spreadsheet formats share
craft-xls carried its own CellRef, Range, Value, CellError, Visibility, sheet-name
quoting, built-in number format table and indexed palette. craft-xlsx and craft-ods
need the same ones, so they move to a crate with no dependencies and craft-xls
re-exports them: an application gets one Value and one CellRef whichever file it read.
Added on the way: A1 parsing (CellRef::parse, Range::parse), Range::count and a1,
CellError::parse and the newer error values SpreadsheetML stores as text,
builtin_format_id for writers.
* craft-xls: read data validation (DVal and Dv records)
Each Dv after a DVal becomes a DataValidation in SpreadsheetML's terms: type,
operator, formulas as A1 text from the top left cell of all the rule's ranges (a
literal list quoted, items separated by commas), the four messages, alert style
and flags. Exactly the DVal's count of rules is read, as Excel does; a rule Excel
would refuse is skipped with a warning, and the rest are kept. A sheet keeps at
most 65,536 rules (the count was not capped on its own).
Ported from storytold/gridcraft#3636.
* craft-xls: read comments, conditional formats, pictures and the AutoFilter range
- Notes with their TxO text, author and visibility.
- CondFmt and CF records (cell value is, formula is), formulas from the bounding
range's top left cell, and the DXFN as a DifferentialFormat whose unset parts are
None.
- The drawing group's BLIP store (PNG, JPEG, EMF, WMF with its placeable header,
DIB as BMP) and each sheet's picture shapes with their client anchors.
- The AutoFilter range from AutoFilterInfo and _FilterDatabase.
From the review of the source PR: picture bytes are shared by the shapes that show
them, pictures, comments and rules are capped per sheet, inflated metafiles share
one allowance, damaged object and CF records are skipped with a warning instead of
failing the read, and CF formulas are relative to the CondFmt's bounding range.
ValidationOperator is now Operator, shared with conditional formats.
Ported from storytold/gridcraft#3457.
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Co-authored-by: kiwi4boy <kiwi4boy@gmail.com>
Co-authored-by: BrianDo35 <haison.db35@icloud.com>
