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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Console; |
| 6 | |
| 7 | use ValueError; |
| 8 | |
| 9 | /** |
| 10 | * Renders rows of columns aligned on their visible width — markup |
| 11 | * tags and multibyte characters don't count, so cells may carry |
| 12 | * markup: `<green>1,075</green>`. |
| 13 | * |
| 14 | * Columns size to their widest cell and are separated by two spaces; |
| 15 | * `rule()` inserts a separator line spanning the table. Cells don't |
| 16 | * wrap: a table wider than the terminal simply overflows. Render the |
| 17 | * result through the Io echo methods: |
| 18 | * |
| 19 | * $table = new Table(align: [Align::Left, Align::Right]); |
| 20 | * $table->row(['<strong>Language</strong>', '<strong>Lines</strong>']); |
| 21 | * $table->rule(); |
| 22 | * $table->row(['PHP', '1,075']); |
| 23 | * $io->echo($table->render()); |
| 24 | * |
| 25 | * @api |
| 26 | */ |
| 27 | final class Table |
| 28 | { |
| 29 | private readonly Markup $markup; |
| 30 | |
| 31 | /** @var list<list<string>|string> Cell rows, or a rule's char. */ |
| 32 | private array $rows = []; |
| 33 | |
| 34 | /** @param list<Align> $align Per column; further columns align left. */ |
| 35 | public function __construct( |
| 36 | private readonly array $align = [], |
| 37 | ) { |
| 38 | $this->markup = new Markup(); |
| 39 | } |
| 40 | |
| 41 | /** @param list<string> $cells A short row leaves the rest empty. */ |
| 42 | public function row(array $cells): void |
| 43 | { |
| 44 | $this->rows[] = $cells; |
| 45 | } |
| 46 | |
| 47 | public function rule(string $char = '─'): void |
| 48 | { |
| 49 | if ($this->markup->width($char) < 1) { |
| 50 | throw new ValueError("Rule char '{$char}' has no visible width"); |
| 51 | } |
| 52 | |
| 53 | $this->rows[] = $char; |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * The rendered table, lines separated and terminated by `\n`. |
| 58 | */ |
| 59 | public function render(): string |
| 60 | { |
| 61 | $widths = []; |
| 62 | |
| 63 | foreach ($this->rows as $row) { |
| 64 | if (is_string($row)) { |
| 65 | continue; |
| 66 | } |
| 67 | |
| 68 | foreach ($row as $i => $cell) { |
| 69 | $widths[$i] = max($widths[$i] ?? 0, $this->markup->width($cell)); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | $total = (int) array_sum($widths) + (2 * max(0, count($widths) - 1)); |
| 74 | $out = ''; |
| 75 | |
| 76 | foreach ($this->rows as $row) { |
| 77 | if (is_string($row)) { |
| 78 | $out .= str_repeat($row, intdiv($total, $this->markup->width($row))); |
| 79 | } else { |
| 80 | $cells = []; |
| 81 | |
| 82 | foreach ($widths as $i => $width) { |
| 83 | $cells[] = $this->markup->pad($row[$i] ?? '', $width, $this->align[$i] ?? Align::Left); |
| 84 | } |
| 85 | |
| 86 | $out .= rtrim(implode(' ', $cells)); |
| 87 | } |
| 88 | |
| 89 | $out .= "\n"; |
| 90 | } |
| 91 | |
| 92 | return $out; |
| 93 | } |
| 94 | } |