241 lines
7.9 KiB
Python
241 lines
7.9 KiB
Python
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from typing import Dict, List, Tuple
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import pandas._libs.json as json
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from pandas._typing import StorageOptions
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from pandas.io.excel._base import ExcelWriter
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from pandas.io.excel._util import validate_freeze_panes
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class _XlsxStyler:
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# Map from openpyxl-oriented styles to flatter xlsxwriter representation
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# Ordering necessary for both determinism and because some are keyed by
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# prefixes of others.
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STYLE_MAPPING: Dict[str, List[Tuple[Tuple[str, ...], str]]] = {
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"font": [
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(("name",), "font_name"),
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(("sz",), "font_size"),
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(("size",), "font_size"),
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(("color", "rgb"), "font_color"),
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(("color",), "font_color"),
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(("b",), "bold"),
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(("bold",), "bold"),
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(("i",), "italic"),
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(("italic",), "italic"),
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(("u",), "underline"),
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(("underline",), "underline"),
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(("strike",), "font_strikeout"),
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(("vertAlign",), "font_script"),
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(("vertalign",), "font_script"),
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],
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"number_format": [(("format_code",), "num_format"), ((), "num_format")],
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"protection": [(("locked",), "locked"), (("hidden",), "hidden")],
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"alignment": [
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(("horizontal",), "align"),
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(("vertical",), "valign"),
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(("text_rotation",), "rotation"),
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(("wrap_text",), "text_wrap"),
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(("indent",), "indent"),
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(("shrink_to_fit",), "shrink"),
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],
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"fill": [
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(("patternType",), "pattern"),
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(("patterntype",), "pattern"),
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(("fill_type",), "pattern"),
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(("start_color", "rgb"), "fg_color"),
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(("fgColor", "rgb"), "fg_color"),
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(("fgcolor", "rgb"), "fg_color"),
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(("start_color",), "fg_color"),
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(("fgColor",), "fg_color"),
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(("fgcolor",), "fg_color"),
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(("end_color", "rgb"), "bg_color"),
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(("bgColor", "rgb"), "bg_color"),
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(("bgcolor", "rgb"), "bg_color"),
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(("end_color",), "bg_color"),
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(("bgColor",), "bg_color"),
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(("bgcolor",), "bg_color"),
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],
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"border": [
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(("color", "rgb"), "border_color"),
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(("color",), "border_color"),
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(("style",), "border"),
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(("top", "color", "rgb"), "top_color"),
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(("top", "color"), "top_color"),
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(("top", "style"), "top"),
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(("top",), "top"),
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(("right", "color", "rgb"), "right_color"),
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(("right", "color"), "right_color"),
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(("right", "style"), "right"),
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(("right",), "right"),
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(("bottom", "color", "rgb"), "bottom_color"),
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(("bottom", "color"), "bottom_color"),
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(("bottom", "style"), "bottom"),
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(("bottom",), "bottom"),
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(("left", "color", "rgb"), "left_color"),
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(("left", "color"), "left_color"),
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(("left", "style"), "left"),
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(("left",), "left"),
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],
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}
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@classmethod
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def convert(cls, style_dict, num_format_str=None):
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"""
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converts a style_dict to an xlsxwriter format dict
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Parameters
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----------
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style_dict : style dictionary to convert
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num_format_str : optional number format string
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"""
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# Create a XlsxWriter format object.
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props = {}
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if num_format_str is not None:
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props["num_format"] = num_format_str
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if style_dict is None:
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return props
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if "borders" in style_dict:
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style_dict = style_dict.copy()
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style_dict["border"] = style_dict.pop("borders")
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for style_group_key, style_group in style_dict.items():
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for src, dst in cls.STYLE_MAPPING.get(style_group_key, []):
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# src is a sequence of keys into a nested dict
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# dst is a flat key
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if dst in props:
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continue
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v = style_group
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for k in src:
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try:
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v = v[k]
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except (KeyError, TypeError):
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break
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else:
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props[dst] = v
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if isinstance(props.get("pattern"), str):
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# TODO: support other fill patterns
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props["pattern"] = 0 if props["pattern"] == "none" else 1
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for k in ["border", "top", "right", "bottom", "left"]:
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if isinstance(props.get(k), str):
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try:
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props[k] = [
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"none",
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"thin",
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"medium",
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"dashed",
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"dotted",
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"thick",
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"double",
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"hair",
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"mediumDashed",
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"dashDot",
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"mediumDashDot",
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"dashDotDot",
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"mediumDashDotDot",
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"slantDashDot",
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].index(props[k])
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except ValueError:
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props[k] = 2
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if isinstance(props.get("font_script"), str):
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props["font_script"] = ["baseline", "superscript", "subscript"].index(
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props["font_script"]
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)
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if isinstance(props.get("underline"), str):
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props["underline"] = {
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"none": 0,
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"single": 1,
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"double": 2,
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"singleAccounting": 33,
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"doubleAccounting": 34,
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}[props["underline"]]
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return props
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class XlsxWriter(ExcelWriter):
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engine = "xlsxwriter"
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supported_extensions = (".xlsx",)
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def __init__(
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self,
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path,
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engine=None,
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date_format=None,
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datetime_format=None,
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mode: str = "w",
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storage_options: StorageOptions = None,
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**engine_kwargs,
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):
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# Use the xlsxwriter module as the Excel writer.
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from xlsxwriter import Workbook
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if mode == "a":
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raise ValueError("Append mode is not supported with xlsxwriter!")
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super().__init__(
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path,
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engine=engine,
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date_format=date_format,
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datetime_format=datetime_format,
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mode=mode,
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storage_options=storage_options,
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**engine_kwargs,
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)
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self.book = Workbook(self.handles.handle, **engine_kwargs)
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def save(self):
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"""
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Save workbook to disk.
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"""
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return self.book.close()
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def write_cells(
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self, cells, sheet_name=None, startrow=0, startcol=0, freeze_panes=None
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):
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# Write the frame cells using xlsxwriter.
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sheet_name = self._get_sheet_name(sheet_name)
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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 = self.book.add_worksheet(sheet_name)
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self.sheets[sheet_name] = wks
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style_dict = {"null": None}
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if validate_freeze_panes(freeze_panes):
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wks.freeze_panes(*(freeze_panes))
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for cell in cells:
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val, fmt = self._value_with_fmt(cell.val)
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stylekey = json.dumps(cell.style)
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if fmt:
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stylekey += fmt
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if stylekey in style_dict:
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style = style_dict[stylekey]
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else:
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style = self.book.add_format(_XlsxStyler.convert(cell.style, fmt))
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style_dict[stylekey] = style
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if cell.mergestart is not None and cell.mergeend is not None:
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wks.merge_range(
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startrow + cell.row,
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startcol + cell.col,
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startrow + cell.mergestart,
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startcol + cell.mergeend,
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val,
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style,
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)
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else:
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wks.write(startrow + cell.row, startcol + cell.col, val, style)
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