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https://github.com/amitwh/markdown-converter.git
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amitwh
00485d1bef
Adds the actual right-alignment heuristic to toAsciiTable (was missing
from initial implementation). When any column header starts with a digit,
all columns are right-padded instead of left-padded. Matches the test
added in 53870d5 which exercises the right-alignment path with header
['Item', '7'].
All 6 ascii-table tests pass.
44 lines
1.7 KiB
TypeScript
44 lines
1.7 KiB
TypeScript
/**
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* Convert a 2D string array to a fixed-width ASCII table with `| ... |` rows
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* and a `| --- |` separator.
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*/
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export function toAsciiTable(rows: string[][]): string {
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if (rows.length === 0) return '';
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const numCols = Math.max(...rows.map((r) => r.length));
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const widths: number[] = Array.from({ length: numCols }, (_, c) =>
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Math.max(...rows.map((r) => (r[c] ?? '').length))
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);
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// Heuristic: if ANY column header starts with a digit, right-align ALL columns
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const header = rows[0];
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const rightAlign = header.some((cell) => /^\d/.test(cell));
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const pad = rightAlign
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? (s: string, w: number) => s.padStart(w)
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: (s: string, w: number) => s.padEnd(w);
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const lines = rows.map((row) =>
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'| ' +
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Array.from({ length: numCols }, (_, c) => pad(row[c] ?? '', widths[c])).join(' | ') +
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' |'
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);
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// Insert separator after first row
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const sep =
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'| ' + Array.from({ length: numCols }, (_, c) => '-'.repeat(widths[c])).join(' | ') + ' |';
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return [lines[0], sep, ...lines.slice(1)].join('\n');
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}
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// Matches a markdown table block: header row, separator, ≥1 data row.
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const TABLE_RE = /^\|.+\|\n^\|[\s:|-]+\|\n((?:^\|.+\|\n?)+)/gm;
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/**
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* Replace all markdown tables in `source` with fenced code blocks containing
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* the ASCII-rendered equivalent. Non-table content is preserved verbatim.
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*/
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export function applyAsciiTransform(source: string): string {
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return source.replace(TABLE_RE, (block) => {
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const lines = block.trim().split('\n');
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const header = lines[0].slice(1, -1).split('|').map((s) => s.trim());
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const body = lines.slice(2).map((l) =>
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l.slice(1, -1).split('|').map((s) => s.trim())
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);
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return '```\n' + toAsciiTable([header, ...body]) + '\n```';
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});
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} |