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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import { getStringWidth } from "ext:deno_node/internal/util/inspect.mjs";
const tableChars = {
middleMiddle: "\u2500",
rowMiddle: "\u253c",
topRight: "\u2510",
topLeft: "\u250c",
leftMiddle: "\u251c",
topMiddle: "\u252c",
bottomRight: "\u2518",
bottomLeft: "\u2514",
bottomMiddle: "\u2534",
rightMiddle: "\u2524",
left: "\u2502 ",
right: " \u2502",
middle: " \u2502 ",
};
const renderRow = (row: string[], columnWidths: number[]) => {
let out = tableChars.left;
for (let i = 0; i < row.length; i++) {
const cell = row[i];
const len = getStringWidth(cell);
const needed = columnWidths[i] - len;
// round(needed) + ceil(needed) will always add up to the amount
// of spaces we need while also left justifying the output.
out += cell + " ".repeat(Math.ceil(needed));
if (i !== row.length - 1) {
out += tableChars.middle;
}
}
out += tableChars.right;
return out;
};
const table = (head: string[], columns: string[][]) => {
const rows: string[][] = [];
const columnWidths = head.map((h) => getStringWidth(h));
const longestColumn = Math.max(...columns.map((a) => a.length));
for (let i = 0; i < head.length; i++) {
const column = columns[i];
for (let j = 0; j < longestColumn; j++) {
if (rows[j] === undefined) {
rows[j] = [];
}
const value = rows[j][i] = Object.hasOwn(column, j) ? column[j] : "";
const width = columnWidths[i] || 0;
const counted = getStringWidth(value);
columnWidths[i] = Math.max(width, counted);
}
}
const divider = columnWidths.map((i) =>
tableChars.middleMiddle.repeat(i + 2)
);
let result = tableChars.topLeft +
divider.join(tableChars.topMiddle) +
tableChars.topRight + "\n" +
renderRow(head, columnWidths) + "\n" +
tableChars.leftMiddle +
divider.join(tableChars.rowMiddle) +
tableChars.rightMiddle + "\n";
for (const row of rows) {
result += `${renderRow(row, columnWidths)}\n`;
}
result += tableChars.bottomLeft +
divider.join(tableChars.bottomMiddle) +
tableChars.bottomRight;
return result;
};
export default table;
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