* Support all datatypes for StreamWriter
* Support setting styles with StreamWriter
**NOTE:** This is a breaking change. Values are now explicitly
passed as a []interface{} for simplicity. We also let styles to be
set at the same time.
* Create function to write stream into a table
* Write rows directly to buffer
Avoiding the xml.Encoder makes the streamer faster and use less
memory.
Using the included benchmark, the results went from:
> BenchmarkStreamWriter-4 514 2576155 ns/op 454918 B/op 6592 allocs/op
down to:
> BenchmarkStreamWriter-4 1614 777480 ns/op 147608 B/op 5570 allocs/op
* Use AddTable instead of SetTable
This requires reading the cells after they have been written,
which requires additional structure for the temp file.
As a bonus, we now efficiently allocate only one buffer when
reading the file back into memory, using the same approach
as ioutil.ReadFile.
* Use an exported Cell type to handle inline styles for StreamWriter
* Allow access to more formula attributes in SetCellFormula
Make SetCellFormula variadic to not break API.
The new arguments are option arguments in which the type of
the formula and the ref attribute may be set.
These need to be set for an array formula to work.
* Add TestWriteArrayFormula to test optional parameters of SetCellFormula
TestWriteArrayFormula writes a document to the test directory that
contains array formulas that are used to calculate standard deviations.
The file also contains values calculated by the Go testcase, so the
results can be verified. It should be tested, if the array formula
works (i.e. shows a number, not an error) and that the values calculated
by the formula and those calculated by Go are the same.
workBookRelsWriter, drawingRelsWriter into relsWriter;
drawingRelsReader, workbookRelsReader, workSheetRelsReader into relsReader;
addDrawingRelationships, addSheetRelationships into addRels
* Huge refactorig for consistent col/row numbering
Started from simply changing ToALphaString()/TitleToNumber() logic and related fixes.
But have to go deeper, do fixes, after do related fixes and again and again.
Major improvements:
1. Tests made stronger again (But still be weak).
2. "Empty" returns for incorrect input replaces with panic.
3. Check for correct col/row/cell naming & addressing by default.
4. Removed huge amount of duplicated code.
5. Removed ToALphaString(), TitleToNumber() and it helpers functions at all,
and replaced with SplitCellName(), JoinCellName(), ColumnNameToNumber(), ColumnNumberToName(), CellNameToCoordinates(), CoordinatesToCellName().
6. Minor fixes for internal variable naming for code readability (ex. col, row for input params, colIdx, rowIdx for slice indexes etc).
* Formatting fixes
xuri