358 lines
11 KiB
Python
358 lines
11 KiB
Python
from __future__ import annotations
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from collections import defaultdict
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import datetime
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import json
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from typing import (
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TYPE_CHECKING,
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Any,
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DefaultDict,
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cast,
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overload,
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)
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from pandas.io.excel._base import ExcelWriter
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from pandas.io.excel._util import (
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combine_kwargs,
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validate_freeze_panes,
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)
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if TYPE_CHECKING:
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from pandas._typing import (
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ExcelWriterIfSheetExists,
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FilePath,
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StorageOptions,
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WriteExcelBuffer,
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)
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from pandas.io.formats.excel import ExcelCell
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class ODSWriter(ExcelWriter):
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_engine = "odf"
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_supported_extensions = (".ods",)
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def __init__(
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self,
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path: FilePath | WriteExcelBuffer | ExcelWriter,
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engine: str | None = None,
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date_format: str | None = None,
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datetime_format=None,
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mode: str = "w",
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storage_options: StorageOptions | None = None,
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if_sheet_exists: ExcelWriterIfSheetExists | None = None,
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engine_kwargs: dict[str, Any] | None = None,
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**kwargs,
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) -> None:
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from odf.opendocument import OpenDocumentSpreadsheet
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if mode == "a":
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raise ValueError("Append mode is not supported with odf!")
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engine_kwargs = combine_kwargs(engine_kwargs, kwargs)
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self._book = OpenDocumentSpreadsheet(**engine_kwargs)
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super().__init__(
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path,
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mode=mode,
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storage_options=storage_options,
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if_sheet_exists=if_sheet_exists,
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engine_kwargs=engine_kwargs,
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)
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self._style_dict: dict[str, str] = {}
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@property
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def book(self):
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"""
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Book instance of class odf.opendocument.OpenDocumentSpreadsheet.
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This attribute can be used to access engine-specific features.
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"""
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return self._book
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@property
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def sheets(self) -> dict[str, Any]:
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"""Mapping of sheet names to sheet objects."""
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from odf.table import Table
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result = {
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sheet.getAttribute("name"): sheet
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for sheet in self.book.getElementsByType(Table)
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}
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return result
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def _save(self) -> None:
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"""
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Save workbook to disk.
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"""
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for sheet in self.sheets.values():
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self.book.spreadsheet.addElement(sheet)
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self.book.save(self._handles.handle)
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def _write_cells(
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self,
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cells: list[ExcelCell],
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sheet_name: str | None = None,
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startrow: int = 0,
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startcol: int = 0,
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freeze_panes: tuple[int, int] | None = None,
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) -> None:
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"""
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Write the frame cells using odf
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"""
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from odf.table import (
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Table,
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TableCell,
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TableRow,
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)
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from odf.text import P
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sheet_name = self._get_sheet_name(sheet_name)
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assert sheet_name is not None
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if sheet_name in self.sheets:
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wks = self.sheets[sheet_name]
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else:
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wks = Table(name=sheet_name)
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self.book.spreadsheet.addElement(wks)
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if validate_freeze_panes(freeze_panes):
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freeze_panes = cast(tuple[int, int], freeze_panes)
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self._create_freeze_panes(sheet_name, freeze_panes)
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for _ in range(startrow):
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wks.addElement(TableRow())
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rows: DefaultDict = defaultdict(TableRow)
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col_count: DefaultDict = defaultdict(int)
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for cell in sorted(cells, key=lambda cell: (cell.row, cell.col)):
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# only add empty cells if the row is still empty
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if not col_count[cell.row]:
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for _ in range(startcol):
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rows[cell.row].addElement(TableCell())
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# fill with empty cells if needed
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for _ in range(cell.col - col_count[cell.row]):
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rows[cell.row].addElement(TableCell())
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col_count[cell.row] += 1
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pvalue, tc = self._make_table_cell(cell)
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rows[cell.row].addElement(tc)
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col_count[cell.row] += 1
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p = P(text=pvalue)
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tc.addElement(p)
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# add all rows to the sheet
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if len(rows) > 0:
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for row_nr in range(max(rows.keys()) + 1):
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wks.addElement(rows[row_nr])
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def _make_table_cell_attributes(self, cell) -> dict[str, int | str]:
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"""Convert cell attributes to OpenDocument attributes
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Parameters
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----------
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cell : ExcelCell
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Spreadsheet cell data
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Returns
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-------
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attributes : Dict[str, Union[int, str]]
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Dictionary with attributes and attribute values
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"""
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attributes: dict[str, int | str] = {}
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style_name = self._process_style(cell.style)
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if style_name is not None:
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attributes["stylename"] = style_name
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if cell.mergestart is not None and cell.mergeend is not None:
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attributes["numberrowsspanned"] = max(1, cell.mergestart)
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attributes["numbercolumnsspanned"] = cell.mergeend
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return attributes
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def _make_table_cell(self, cell) -> tuple[object, Any]:
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"""Convert cell data to an OpenDocument spreadsheet cell
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Parameters
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----------
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cell : ExcelCell
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Spreadsheet cell data
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Returns
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-------
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pvalue, cell : Tuple[str, TableCell]
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Display value, Cell value
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"""
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from odf.table import TableCell
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attributes = self._make_table_cell_attributes(cell)
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val, fmt = self._value_with_fmt(cell.val)
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pvalue = value = val
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if isinstance(val, bool):
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value = str(val).lower()
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pvalue = str(val).upper()
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return (
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pvalue,
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TableCell(
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valuetype="boolean",
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booleanvalue=value,
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attributes=attributes,
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),
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)
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elif isinstance(val, datetime.datetime):
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# Fast formatting
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value = val.isoformat()
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# Slow but locale-dependent
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pvalue = val.strftime("%c")
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return (
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pvalue,
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TableCell(valuetype="date", datevalue=value, attributes=attributes),
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)
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elif isinstance(val, datetime.date):
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# Fast formatting
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value = f"{val.year}-{val.month:02d}-{val.day:02d}"
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# Slow but locale-dependent
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pvalue = val.strftime("%x")
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return (
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pvalue,
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TableCell(valuetype="date", datevalue=value, attributes=attributes),
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)
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elif isinstance(val, str):
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return (
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pvalue,
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TableCell(
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valuetype="string",
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stringvalue=value,
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attributes=attributes,
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),
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)
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else:
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return (
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pvalue,
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TableCell(
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valuetype="float",
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value=value,
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attributes=attributes,
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),
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)
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@overload
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def _process_style(self, style: dict[str, Any]) -> str:
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...
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@overload
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def _process_style(self, style: None) -> None:
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...
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def _process_style(self, style: dict[str, Any] | None) -> str | None:
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"""Convert a style dictionary to a OpenDocument style sheet
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Parameters
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----------
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style : Dict
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Style dictionary
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Returns
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-------
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style_key : str
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Unique style key for later reference in sheet
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"""
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from odf.style import (
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ParagraphProperties,
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Style,
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TableCellProperties,
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TextProperties,
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)
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if style is None:
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return None
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style_key = json.dumps(style)
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if style_key in self._style_dict:
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return self._style_dict[style_key]
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name = f"pd{len(self._style_dict)+1}"
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self._style_dict[style_key] = name
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odf_style = Style(name=name, family="table-cell")
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if "font" in style:
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font = style["font"]
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if font.get("bold", False):
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odf_style.addElement(TextProperties(fontweight="bold"))
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if "borders" in style:
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borders = style["borders"]
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for side, thickness in borders.items():
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thickness_translation = {"thin": "0.75pt solid #000000"}
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odf_style.addElement(
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TableCellProperties(
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attributes={f"border{side}": thickness_translation[thickness]}
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)
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)
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if "alignment" in style:
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alignment = style["alignment"]
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horizontal = alignment.get("horizontal")
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if horizontal:
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odf_style.addElement(ParagraphProperties(textalign=horizontal))
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vertical = alignment.get("vertical")
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if vertical:
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odf_style.addElement(TableCellProperties(verticalalign=vertical))
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self.book.styles.addElement(odf_style)
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return name
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def _create_freeze_panes(
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self, sheet_name: str, freeze_panes: tuple[int, int]
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) -> None:
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"""
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Create freeze panes in the sheet.
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Parameters
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----------
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sheet_name : str
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Name of the spreadsheet
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freeze_panes : tuple of (int, int)
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Freeze pane location x and y
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"""
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from odf.config import (
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ConfigItem,
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ConfigItemMapEntry,
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ConfigItemMapIndexed,
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ConfigItemMapNamed,
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ConfigItemSet,
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)
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config_item_set = ConfigItemSet(name="ooo:view-settings")
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self.book.settings.addElement(config_item_set)
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config_item_map_indexed = ConfigItemMapIndexed(name="Views")
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config_item_set.addElement(config_item_map_indexed)
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config_item_map_entry = ConfigItemMapEntry()
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config_item_map_indexed.addElement(config_item_map_entry)
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config_item_map_named = ConfigItemMapNamed(name="Tables")
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config_item_map_entry.addElement(config_item_map_named)
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config_item_map_entry = ConfigItemMapEntry(name=sheet_name)
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config_item_map_named.addElement(config_item_map_entry)
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config_item_map_entry.addElement(
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ConfigItem(name="HorizontalSplitMode", type="short", text="2")
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)
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config_item_map_entry.addElement(
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ConfigItem(name="VerticalSplitMode", type="short", text="2")
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)
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config_item_map_entry.addElement(
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ConfigItem(
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name="HorizontalSplitPosition", type="int", text=str(freeze_panes[0])
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)
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)
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config_item_map_entry.addElement(
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ConfigItem(
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name="VerticalSplitPosition", type="int", text=str(freeze_panes[1])
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)
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)
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config_item_map_entry.addElement(
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ConfigItem(name="PositionRight", type="int", text=str(freeze_panes[0]))
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)
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config_item_map_entry.addElement(
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ConfigItem(name="PositionBottom", type="int", text=str(freeze_panes[1]))
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)
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