feat(sheet): read every Excel container in-house and drop calamine - #112

Merged

tomsideguide merged 34 commits into

mainfrom

feat/sheet-in-house

Aug 20, 2026

Commits on Aug 19, 2026

feat(sheet): read xlsx and xlsm in-house with number format support
tomsideguide
committed
874818b
feat(sheet): read ole .xls in-house instead of calamine
tomsideguide
committed
0972fc0
feat(sheet): read xlsb in-house, narrowing calamine to legacy xls
tomsideguide
committed
cc0f4ba
chore(sheet): drop calamine now every workbook container is read in-house
tomsideguide
committed
d466d45
fix(sheet): match am/pm format tokens over chars, not bytes
tomsideguide
committed
290537f
fix(sheet): cap the grid a sparse sheet extent can materialize
tomsideguide
committed
6369125
refactor(sheet): share the rk decoder and error table between the binary readers
tomsideguide
committed
4c09b4e
test(fuzz): reach the binary readers and the format engine with wrapped inputs
tomsideguide
committed
7ddc5c4
fix(sheet): keep the literals decorating a general format, and drop an empty decimal point
tomsideguide
committed
5c933fc
fix(sheet): resolve a workbook part that is not at its conventional path
tomsideguide
committed
41ab351
fix(xls): warn when the workbook stream ends mid-record
tomsideguide
committed
6fbed6c
test(fuzz): let xlsb mutation reach the cell, style and string readers
tomsideguide
committed
2ab6526
docs(limits): trim the grid slot cap comment to its statement
tomsideguide
committed
667b262
docs(sheet): trim the reader header to what it does
tomsideguide
committed
fd5f3cb
fix(sheet): keep the fictitious 1900 leap day distinct from the day before it
tomsideguide
committed
bcc40d4
fix(sheet): pick the workbook reader from the part's bytes and propagate limit errors
tomsideguide
committed
a22d2b0
test(fuzz): write the second worksheet part the xlsb package declares
tomsideguide
committed
13d2db8

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feat(sheet): read every Excel container in-house and drop calamine - #112

feat(sheet): read every Excel container in-house and drop calamine#112
tomsideguide merged 34 commits into
mainfrom
feat/sheet-in-house

Commits on Aug 19, 2026

feat(sheet): read xlsx and xlsm in-house with number format support

feat(sheet): read ole .xls in-house instead of calamine

feat(sheet): read xlsb in-house, narrowing calamine to legacy xls

chore(sheet): drop calamine now every workbook container is read in-house

fix(sheet): match am/pm format tokens over chars, not bytes

fix(sheet): cap the grid a sparse sheet extent can materialize

refactor(sheet): share the rk decoder and error table between the binary readers

test(fuzz): reach the binary readers and the format engine with wrapped inputs

fix(sheet): keep the literals decorating a general format, and drop an empty decimal point

fix(sheet): resolve a workbook part that is not at its conventional path

fix(xls): warn when the workbook stream ends mid-record

test(fuzz): let xlsb mutation reach the cell, style and string readers

docs(limits): trim the grid slot cap comment to its statement

docs(sheet): trim the reader header to what it does

fix(sheet): keep the fictitious 1900 leap day distinct from the day before it

fix(sheet): pick the workbook reader from the part's bytes and propagate limit errors

test(fuzz): write the second worksheet part the xlsb package declares

Commits on Aug 20, 2026

fix(sheet): read a byte order mark as xml and test the leap day before the seconds carry

fix(sheet): fall back to general on an empty format code, and honour wider fraction denominators

test(fuzz): seed the am/pm token path and keep whitespace in format codes

fix(sheet): resolve the main part before conventional paths and require a workbook

fix(sheet): render only the date and time parts a format names

fix(sheet): budget grid materialization across the workbook, not per sheet

fix(sheet): require a workbook from the conventional binary part too

fix(sheet): record an elapsed bracket as a time run

fix(sheet): find the closest fraction by continued fractions, and drop the clock from a date-only format

fix(sheet): open the package once and classify the main part from its cached bytes

fix(sheet): keep the decimal point when no placeholder follows it

fix(sheet): keep the clock a combined format names on a sub-day serial

fix(sheet): saturate the fraction bound past nineteen denominator places

fix(sheet): walk the continued fraction of the float's exact ratio

fix(sheet): an elapsed format is a duration, never a date

refactor(sheet): borrow a general section's decorations instead of cloning them

test(fuzz): make the xlsb seed's second sheet visible so its part is read