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table_view.py
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table_view.py
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# NOTE: I tried a few different libraries to do this
# but non of them works exactly as I want to, so ...
import csv
import json
from io import StringIO
from enum import Enum
from dataclasses import dataclass
from typing import Any
from util import Color, balance_color, PRECISION
LINE = ["---"]
class CellAlignment(Enum):
LEFT = "<"
RIGHT = ">"
@dataclass
class Cell():
content: Any
color: Color | str | None = None
alignment: CellAlignment = CellAlignment.LEFT
width: int | None = None
def __str__(self) -> str:
# NOTE: used for json and csv format
return str(self.content)
class TableView():
headers: list[tuple[str, str]] = []
rows: list[list[Any]] = []
def __init__(self, col_width: int = 8) -> None:
self.width = col_width
def __str__(self) -> str:
out = ""
for h in self.get_header():
out += f"| {h:<{self.width}} "
out += "|\n"
length = len(out) - 1
line = "-" * length + "\n"
out = line + out
out += line
for row in self.rows:
if row == LINE:
out += line
continue
for i, cell in enumerate(row):
if type(cell) is not Cell:
alignment = (CellAlignment.LEFT if i == 0
else CellAlignment.RIGHT)
cell = Cell(cell, alignment=alignment)
value = cell.content
width = self.width if cell.width is None else cell.width
if type(cell.color) is Color:
value = f"{cell.color}{value}{Color.END}"
width += len(value) - len(str(cell.content))
elif cell.color == "balance":
value = balance_color(cell.content)
num_width = len(f"{cell.content:.{PRECISION}f}")
width += len(value) - num_width
out += f"| {value:{cell.alignment.value}{width}} "
out += "|\n"
out += line
return out
def add_row(self, row: list[Any] = []) -> None:
self.rows.append(row)
def add_divider(self) -> None:
self.rows.append(LINE)
def set_header(self, header: list[tuple[str, str]],
config: Any = None) -> None:
self.headers = header
# TODO: header configuration
def get_header(self, id_mode: bool = False) -> list[str]:
if id_mode:
return [header[0] for header in self.headers]
return [header[1] for header in self.headers]
def to_json(self) -> str:
return json.dumps(
[dict(zip(self.get_header(True), map(str, row)))
for row in self.rows
if row != LINE],
indent=4)
def to_csv(self) -> str:
output = StringIO()
writer = csv.writer(output, delimiter=";")
writer.writerow(self.get_header(True))
for row in self.rows:
if row != LINE:
writer.writerow(map(str, row))
return output.getvalue()