[6a3a178] | 1 | 'use strict';
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| 2 | const align = {
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| 3 | right: alignRight,
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| 4 | center: alignCenter
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| 5 | };
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| 6 | const top = 0;
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| 7 | const right = 1;
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| 8 | const bottom = 2;
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| 9 | const left = 3;
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| 10 | export class UI {
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| 11 | constructor(opts) {
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| 12 | var _a;
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| 13 | this.width = opts.width;
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| 14 | this.wrap = (_a = opts.wrap) !== null && _a !== void 0 ? _a : true;
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| 15 | this.rows = [];
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| 16 | }
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| 17 | span(...args) {
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| 18 | const cols = this.div(...args);
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| 19 | cols.span = true;
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| 20 | }
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| 21 | resetOutput() {
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| 22 | this.rows = [];
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| 23 | }
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| 24 | div(...args) {
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| 25 | if (args.length === 0) {
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| 26 | this.div('');
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| 27 | }
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| 28 | if (this.wrap && this.shouldApplyLayoutDSL(...args) && typeof args[0] === 'string') {
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| 29 | return this.applyLayoutDSL(args[0]);
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| 30 | }
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| 31 | const cols = args.map(arg => {
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| 32 | if (typeof arg === 'string') {
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| 33 | return this.colFromString(arg);
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| 34 | }
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| 35 | return arg;
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| 36 | });
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| 37 | this.rows.push(cols);
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| 38 | return cols;
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| 39 | }
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| 40 | shouldApplyLayoutDSL(...args) {
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| 41 | return args.length === 1 && typeof args[0] === 'string' &&
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| 42 | /[\t\n]/.test(args[0]);
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| 43 | }
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| 44 | applyLayoutDSL(str) {
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| 45 | const rows = str.split('\n').map(row => row.split('\t'));
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| 46 | let leftColumnWidth = 0;
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| 47 | // simple heuristic for layout, make sure the
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| 48 | // second column lines up along the left-hand.
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| 49 | // don't allow the first column to take up more
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| 50 | // than 50% of the screen.
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| 51 | rows.forEach(columns => {
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| 52 | if (columns.length > 1 && mixin.stringWidth(columns[0]) > leftColumnWidth) {
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| 53 | leftColumnWidth = Math.min(Math.floor(this.width * 0.5), mixin.stringWidth(columns[0]));
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| 54 | }
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| 55 | });
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| 56 | // generate a table:
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| 57 | // replacing ' ' with padding calculations.
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| 58 | // using the algorithmically generated width.
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| 59 | rows.forEach(columns => {
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| 60 | this.div(...columns.map((r, i) => {
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| 61 | return {
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| 62 | text: r.trim(),
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| 63 | padding: this.measurePadding(r),
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| 64 | width: (i === 0 && columns.length > 1) ? leftColumnWidth : undefined
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| 65 | };
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| 66 | }));
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| 67 | });
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| 68 | return this.rows[this.rows.length - 1];
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| 69 | }
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| 70 | colFromString(text) {
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| 71 | return {
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| 72 | text,
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| 73 | padding: this.measurePadding(text)
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| 74 | };
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| 75 | }
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| 76 | measurePadding(str) {
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| 77 | // measure padding without ansi escape codes
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| 78 | const noAnsi = mixin.stripAnsi(str);
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| 79 | return [0, noAnsi.match(/\s*$/)[0].length, 0, noAnsi.match(/^\s*/)[0].length];
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| 80 | }
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| 81 | toString() {
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| 82 | const lines = [];
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| 83 | this.rows.forEach(row => {
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| 84 | this.rowToString(row, lines);
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| 85 | });
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| 86 | // don't display any lines with the
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| 87 | // hidden flag set.
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| 88 | return lines
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| 89 | .filter(line => !line.hidden)
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| 90 | .map(line => line.text)
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| 91 | .join('\n');
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| 92 | }
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| 93 | rowToString(row, lines) {
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| 94 | this.rasterize(row).forEach((rrow, r) => {
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| 95 | let str = '';
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| 96 | rrow.forEach((col, c) => {
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| 97 | const { width } = row[c]; // the width with padding.
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| 98 | const wrapWidth = this.negatePadding(row[c]); // the width without padding.
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| 99 | let ts = col; // temporary string used during alignment/padding.
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| 100 | if (wrapWidth > mixin.stringWidth(col)) {
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| 101 | ts += ' '.repeat(wrapWidth - mixin.stringWidth(col));
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| 102 | }
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| 103 | // align the string within its column.
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| 104 | if (row[c].align && row[c].align !== 'left' && this.wrap) {
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| 105 | const fn = align[row[c].align];
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| 106 | ts = fn(ts, wrapWidth);
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| 107 | if (mixin.stringWidth(ts) < wrapWidth) {
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| 108 | ts += ' '.repeat((width || 0) - mixin.stringWidth(ts) - 1);
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| 109 | }
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| 110 | }
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| 111 | // apply border and padding to string.
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| 112 | const padding = row[c].padding || [0, 0, 0, 0];
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| 113 | if (padding[left]) {
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| 114 | str += ' '.repeat(padding[left]);
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| 115 | }
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| 116 | str += addBorder(row[c], ts, '| ');
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| 117 | str += ts;
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| 118 | str += addBorder(row[c], ts, ' |');
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| 119 | if (padding[right]) {
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| 120 | str += ' '.repeat(padding[right]);
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| 121 | }
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| 122 | // if prior row is span, try to render the
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| 123 | // current row on the prior line.
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| 124 | if (r === 0 && lines.length > 0) {
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| 125 | str = this.renderInline(str, lines[lines.length - 1]);
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| 126 | }
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| 127 | });
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| 128 | // remove trailing whitespace.
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| 129 | lines.push({
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| 130 | text: str.replace(/ +$/, ''),
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| 131 | span: row.span
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| 132 | });
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| 133 | });
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| 134 | return lines;
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| 135 | }
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| 136 | // if the full 'source' can render in
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| 137 | // the target line, do so.
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| 138 | renderInline(source, previousLine) {
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| 139 | const match = source.match(/^ */);
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| 140 | const leadingWhitespace = match ? match[0].length : 0;
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| 141 | const target = previousLine.text;
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| 142 | const targetTextWidth = mixin.stringWidth(target.trimRight());
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| 143 | if (!previousLine.span) {
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| 144 | return source;
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| 145 | }
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| 146 | // if we're not applying wrapping logic,
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| 147 | // just always append to the span.
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| 148 | if (!this.wrap) {
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| 149 | previousLine.hidden = true;
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| 150 | return target + source;
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| 151 | }
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| 152 | if (leadingWhitespace < targetTextWidth) {
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| 153 | return source;
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| 154 | }
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| 155 | previousLine.hidden = true;
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| 156 | return target.trimRight() + ' '.repeat(leadingWhitespace - targetTextWidth) + source.trimLeft();
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| 157 | }
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| 158 | rasterize(row) {
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| 159 | const rrows = [];
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| 160 | const widths = this.columnWidths(row);
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| 161 | let wrapped;
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| 162 | // word wrap all columns, and create
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| 163 | // a data-structure that is easy to rasterize.
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| 164 | row.forEach((col, c) => {
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| 165 | // leave room for left and right padding.
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| 166 | col.width = widths[c];
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| 167 | if (this.wrap) {
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| 168 | wrapped = mixin.wrap(col.text, this.negatePadding(col), { hard: true }).split('\n');
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| 169 | }
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| 170 | else {
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| 171 | wrapped = col.text.split('\n');
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| 172 | }
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| 173 | if (col.border) {
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| 174 | wrapped.unshift('.' + '-'.repeat(this.negatePadding(col) + 2) + '.');
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| 175 | wrapped.push("'" + '-'.repeat(this.negatePadding(col) + 2) + "'");
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| 176 | }
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| 177 | // add top and bottom padding.
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| 178 | if (col.padding) {
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| 179 | wrapped.unshift(...new Array(col.padding[top] || 0).fill(''));
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| 180 | wrapped.push(...new Array(col.padding[bottom] || 0).fill(''));
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| 181 | }
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| 182 | wrapped.forEach((str, r) => {
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| 183 | if (!rrows[r]) {
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| 184 | rrows.push([]);
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| 185 | }
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| 186 | const rrow = rrows[r];
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| 187 | for (let i = 0; i < c; i++) {
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| 188 | if (rrow[i] === undefined) {
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| 189 | rrow.push('');
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| 190 | }
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| 191 | }
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| 192 | rrow.push(str);
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| 193 | });
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| 194 | });
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| 195 | return rrows;
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| 196 | }
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| 197 | negatePadding(col) {
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| 198 | let wrapWidth = col.width || 0;
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| 199 | if (col.padding) {
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| 200 | wrapWidth -= (col.padding[left] || 0) + (col.padding[right] || 0);
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| 201 | }
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| 202 | if (col.border) {
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| 203 | wrapWidth -= 4;
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| 204 | }
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| 205 | return wrapWidth;
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| 206 | }
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| 207 | columnWidths(row) {
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| 208 | if (!this.wrap) {
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| 209 | return row.map(col => {
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| 210 | return col.width || mixin.stringWidth(col.text);
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| 211 | });
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| 212 | }
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| 213 | let unset = row.length;
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| 214 | let remainingWidth = this.width;
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| 215 | // column widths can be set in config.
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| 216 | const widths = row.map(col => {
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| 217 | if (col.width) {
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| 218 | unset--;
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| 219 | remainingWidth -= col.width;
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| 220 | return col.width;
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| 221 | }
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| 222 | return undefined;
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| 223 | });
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| 224 | // any unset widths should be calculated.
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| 225 | const unsetWidth = unset ? Math.floor(remainingWidth / unset) : 0;
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| 226 | return widths.map((w, i) => {
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| 227 | if (w === undefined) {
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| 228 | return Math.max(unsetWidth, _minWidth(row[i]));
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| 229 | }
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| 230 | return w;
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| 231 | });
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| 232 | }
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| 233 | }
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| 234 | function addBorder(col, ts, style) {
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| 235 | if (col.border) {
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| 236 | if (/[.']-+[.']/.test(ts)) {
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| 237 | return '';
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| 238 | }
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| 239 | if (ts.trim().length !== 0) {
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| 240 | return style;
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| 241 | }
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| 242 | return ' ';
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| 243 | }
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| 244 | return '';
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| 245 | }
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| 246 | // calculates the minimum width of
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| 247 | // a column, based on padding preferences.
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| 248 | function _minWidth(col) {
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| 249 | const padding = col.padding || [];
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| 250 | const minWidth = 1 + (padding[left] || 0) + (padding[right] || 0);
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| 251 | if (col.border) {
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| 252 | return minWidth + 4;
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| 253 | }
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| 254 | return minWidth;
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| 255 | }
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| 256 | function getWindowWidth() {
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| 257 | /* istanbul ignore next: depends on terminal */
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| 258 | if (typeof process === 'object' && process.stdout && process.stdout.columns) {
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| 259 | return process.stdout.columns;
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| 260 | }
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| 261 | return 80;
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| 262 | }
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| 263 | function alignRight(str, width) {
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| 264 | str = str.trim();
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| 265 | const strWidth = mixin.stringWidth(str);
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| 266 | if (strWidth < width) {
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| 267 | return ' '.repeat(width - strWidth) + str;
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| 268 | }
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| 269 | return str;
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| 270 | }
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| 271 | function alignCenter(str, width) {
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| 272 | str = str.trim();
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| 273 | const strWidth = mixin.stringWidth(str);
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| 274 | /* istanbul ignore next */
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| 275 | if (strWidth >= width) {
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| 276 | return str;
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| 277 | }
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| 278 | return ' '.repeat((width - strWidth) >> 1) + str;
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| 279 | }
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| 280 | let mixin;
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| 281 | export function cliui(opts, _mixin) {
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| 282 | mixin = _mixin;
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| 283 | return new UI({
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| 284 | width: (opts === null || opts === void 0 ? void 0 : opts.width) || getWindowWidth(),
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| 285 | wrap: opts === null || opts === void 0 ? void 0 : opts.wrap
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| 286 | });
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| 287 | }
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