You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
288 lines
9.4 KiB
288 lines
9.4 KiB
2 years ago
|
'use strict';
|
||
|
|
const align = {
|
||
|
|
right: alignRight,
|
||
|
|
center: alignCenter
|
||
|
|
};
|
||
|
|
const top = 0;
|
||
|
|
const right = 1;
|
||
|
|
const bottom = 2;
|
||
|
|
const left = 3;
|
||
|
|
export class UI {
|
||
|
|
constructor(opts) {
|
||
|
|
var _a;
|
||
|
|
this.width = opts.width;
|
||
|
|
this.wrap = (_a = opts.wrap) !== null && _a !== void 0 ? _a : true;
|
||
|
|
this.rows = [];
|
||
|
|
}
|
||
|
|
span(...args) {
|
||
|
|
const cols = this.div(...args);
|
||
|
|
cols.span = true;
|
||
|
|
}
|
||
|
|
resetOutput() {
|
||
|
|
this.rows = [];
|
||
|
|
}
|
||
|
|
div(...args) {
|
||
|
|
if (args.length === 0) {
|
||
|
|
this.div('');
|
||
|
|
}
|
||
|
|
if (this.wrap && this.shouldApplyLayoutDSL(...args) && typeof args[0] === 'string') {
|
||
|
|
return this.applyLayoutDSL(args[0]);
|
||
|
|
}
|
||
|
|
const cols = args.map(arg => {
|
||
|
|
if (typeof arg === 'string') {
|
||
|
|
return this.colFromString(arg);
|
||
|
|
}
|
||
|
|
return arg;
|
||
|
|
});
|
||
|
|
this.rows.push(cols);
|
||
|
|
return cols;
|
||
|
|
}
|
||
|
|
shouldApplyLayoutDSL(...args) {
|
||
|
|
return args.length === 1 && typeof args[0] === 'string' &&
|
||
|
|
/[\t\n]/.test(args[0]);
|
||
|
|
}
|
||
|
|
applyLayoutDSL(str) {
|
||
|
|
const rows = str.split('\n').map(row => row.split('\t'));
|
||
|
|
let leftColumnWidth = 0;
|
||
|
|
// simple heuristic for layout, make sure the
|
||
|
|
// second column lines up along the left-hand.
|
||
|
|
// don't allow the first column to take up more
|
||
|
|
// than 50% of the screen.
|
||
|
|
rows.forEach(columns => {
|
||
|
|
if (columns.length > 1 && mixin.stringWidth(columns[0]) > leftColumnWidth) {
|
||
|
|
leftColumnWidth = Math.min(Math.floor(this.width * 0.5), mixin.stringWidth(columns[0]));
|
||
|
|
}
|
||
|
|
});
|
||
|
|
// generate a table:
|
||
|
|
// replacing ' ' with padding calculations.
|
||
|
|
// using the algorithmically generated width.
|
||
|
|
rows.forEach(columns => {
|
||
|
|
this.div(...columns.map((r, i) => {
|
||
|
|
return {
|
||
|
|
text: r.trim(),
|
||
|
|
padding: this.measurePadding(r),
|
||
|
|
width: (i === 0 && columns.length > 1) ? leftColumnWidth : undefined
|
||
|
|
};
|
||
|
|
}));
|
||
|
|
});
|
||
|
|
return this.rows[this.rows.length - 1];
|
||
|
|
}
|
||
|
|
colFromString(text) {
|
||
|
|
return {
|
||
|
|
text,
|
||
|
|
padding: this.measurePadding(text)
|
||
|
|
};
|
||
|
|
}
|
||
|
|
measurePadding(str) {
|
||
|
|
// measure padding without ansi escape codes
|
||
|
|
const noAnsi = mixin.stripAnsi(str);
|
||
|
|
return [0, noAnsi.match(/\s*$/)[0].length, 0, noAnsi.match(/^\s*/)[0].length];
|
||
|
|
}
|
||
|
|
toString() {
|
||
|
|
const lines = [];
|
||
|
|
this.rows.forEach(row => {
|
||
|
|
this.rowToString(row, lines);
|
||
|
|
});
|
||
|
|
// don't display any lines with the
|
||
|
|
// hidden flag set.
|
||
|
|
return lines
|
||
|
|
.filter(line => !line.hidden)
|
||
|
|
.map(line => line.text)
|
||
|
|
.join('\n');
|
||
|
|
}
|
||
|
|
rowToString(row, lines) {
|
||
|
|
this.rasterize(row).forEach((rrow, r) => {
|
||
|
|
let str = '';
|
||
|
|
rrow.forEach((col, c) => {
|
||
|
|
const { width } = row[c]; // the width with padding.
|
||
|
|
const wrapWidth = this.negatePadding(row[c]); // the width without padding.
|
||
|
|
let ts = col; // temporary string used during alignment/padding.
|
||
|
|
if (wrapWidth > mixin.stringWidth(col)) {
|
||
|
|
ts += ' '.repeat(wrapWidth - mixin.stringWidth(col));
|
||
|
|
}
|
||
|
|
// align the string within its column.
|
||
|
|
if (row[c].align && row[c].align !== 'left' && this.wrap) {
|
||
|
|
const fn = align[row[c].align];
|
||
|
|
ts = fn(ts, wrapWidth);
|
||
|
|
if (mixin.stringWidth(ts) < wrapWidth) {
|
||
|
|
ts += ' '.repeat((width || 0) - mixin.stringWidth(ts) - 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// apply border and padding to string.
|
||
|
|
const padding = row[c].padding || [0, 0, 0, 0];
|
||
|
|
if (padding[left]) {
|
||
|
|
str += ' '.repeat(padding[left]);
|
||
|
|
}
|
||
|
|
str += addBorder(row[c], ts, '| ');
|
||
|
|
str += ts;
|
||
|
|
str += addBorder(row[c], ts, ' |');
|
||
|
|
if (padding[right]) {
|
||
|
|
str += ' '.repeat(padding[right]);
|
||
|
|
}
|
||
|
|
// if prior row is span, try to render the
|
||
|
|
// current row on the prior line.
|
||
|
|
if (r === 0 && lines.length > 0) {
|
||
|
|
str = this.renderInline(str, lines[lines.length - 1]);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
// remove trailing whitespace.
|
||
|
|
lines.push({
|
||
|
|
text: str.replace(/ +$/, ''),
|
||
|
|
span: row.span
|
||
|
|
});
|
||
|
|
});
|
||
|
|
return lines;
|
||
|
|
}
|
||
|
|
// if the full 'source' can render in
|
||
|
|
// the target line, do so.
|
||
|
|
renderInline(source, previousLine) {
|
||
|
|
const match = source.match(/^ */);
|
||
|
|
const leadingWhitespace = match ? match[0].length : 0;
|
||
|
|
const target = previousLine.text;
|
||
|
|
const targetTextWidth = mixin.stringWidth(target.trimRight());
|
||
|
|
if (!previousLine.span) {
|
||
|
|
return source;
|
||
|
|
}
|
||
|
|
// if we're not applying wrapping logic,
|
||
|
|
// just always append to the span.
|
||
|
|
if (!this.wrap) {
|
||
|
|
previousLine.hidden = true;
|
||
|
|
return target + source;
|
||
|
|
}
|
||
|
|
if (leadingWhitespace < targetTextWidth) {
|
||
|
|
return source;
|
||
|
|
}
|
||
|
|
previousLine.hidden = true;
|
||
|
|
return target.trimRight() + ' '.repeat(leadingWhitespace - targetTextWidth) + source.trimLeft();
|
||
|
|
}
|
||
|
|
rasterize(row) {
|
||
|
|
const rrows = [];
|
||
|
|
const widths = this.columnWidths(row);
|
||
|
|
let wrapped;
|
||
|
|
// word wrap all columns, and create
|
||
|
|
// a data-structure that is easy to rasterize.
|
||
|
|
row.forEach((col, c) => {
|
||
|
|
// leave room for left and right padding.
|
||
|
|
col.width = widths[c];
|
||
|
|
if (this.wrap) {
|
||
|
|
wrapped = mixin.wrap(col.text, this.negatePadding(col), { hard: true }).split('\n');
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
wrapped = col.text.split('\n');
|
||
|
|
}
|
||
|
|
if (col.border) {
|
||
|
|
wrapped.unshift('.' + '-'.repeat(this.negatePadding(col) + 2) + '.');
|
||
|
|
wrapped.push("'" + '-'.repeat(this.negatePadding(col) + 2) + "'");
|
||
|
|
}
|
||
|
|
// add top and bottom padding.
|
||
|
|
if (col.padding) {
|
||
|
|
wrapped.unshift(...new Array(col.padding[top] || 0).fill(''));
|
||
|
|
wrapped.push(...new Array(col.padding[bottom] || 0).fill(''));
|
||
|
|
}
|
||
|
|
wrapped.forEach((str, r) => {
|
||
|
|
if (!rrows[r]) {
|
||
|
|
rrows.push([]);
|
||
|
|
}
|
||
|
|
const rrow = rrows[r];
|
||
|
|
for (let i = 0; i < c; i++) {
|
||
|
|
if (rrow[i] === undefined) {
|
||
|
|
rrow.push('');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
rrow.push(str);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
return rrows;
|
||
|
|
}
|
||
|
|
negatePadding(col) {
|
||
|
|
let wrapWidth = col.width || 0;
|
||
|
|
if (col.padding) {
|
||
|
|
wrapWidth -= (col.padding[left] || 0) + (col.padding[right] || 0);
|
||
|
|
}
|
||
|
|
if (col.border) {
|
||
|
|
wrapWidth -= 4;
|
||
|
|
}
|
||
|
|
return wrapWidth;
|
||
|
|
}
|
||
|
|
columnWidths(row) {
|
||
|
|
if (!this.wrap) {
|
||
|
|
return row.map(col => {
|
||
|
|
return col.width || mixin.stringWidth(col.text);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
let unset = row.length;
|
||
|
|
let remainingWidth = this.width;
|
||
|
|
// column widths can be set in config.
|
||
|
|
const widths = row.map(col => {
|
||
|
|
if (col.width) {
|
||
|
|
unset--;
|
||
|
|
remainingWidth -= col.width;
|
||
|
|
return col.width;
|
||
|
|
}
|
||
|
|
return undefined;
|
||
|
|
});
|
||
|
|
// any unset widths should be calculated.
|
||
|
|
const unsetWidth = unset ? Math.floor(remainingWidth / unset) : 0;
|
||
|
|
return widths.map((w, i) => {
|
||
|
|
if (w === undefined) {
|
||
|
|
return Math.max(unsetWidth, _minWidth(row[i]));
|
||
|
|
}
|
||
|
|
return w;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function addBorder(col, ts, style) {
|
||
|
|
if (col.border) {
|
||
|
|
if (/[.']-+[.']/.test(ts)) {
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
if (ts.trim().length !== 0) {
|
||
|
|
return style;
|
||
|
|
}
|
||
|
|
return ' ';
|
||
|
|
}
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
// calculates the minimum width of
|
||
|
|
// a column, based on padding preferences.
|
||
|
|
function _minWidth(col) {
|
||
|
|
const padding = col.padding || [];
|
||
|
|
const minWidth = 1 + (padding[left] || 0) + (padding[right] || 0);
|
||
|
|
if (col.border) {
|
||
|
|
return minWidth + 4;
|
||
|
|
}
|
||
|
|
return minWidth;
|
||
|
|
}
|
||
|
|
function getWindowWidth() {
|
||
|
|
/* istanbul ignore next: depends on terminal */
|
||
|
|
if (typeof process === 'object' && process.stdout && process.stdout.columns) {
|
||
|
|
return process.stdout.columns;
|
||
|
|
}
|
||
|
|
return 80;
|
||
|
|
}
|
||
|
|
function alignRight(str, width) {
|
||
|
|
str = str.trim();
|
||
|
|
const strWidth = mixin.stringWidth(str);
|
||
|
|
if (strWidth < width) {
|
||
|
|
return ' '.repeat(width - strWidth) + str;
|
||
|
|
}
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
function alignCenter(str, width) {
|
||
|
|
str = str.trim();
|
||
|
|
const strWidth = mixin.stringWidth(str);
|
||
|
|
/* istanbul ignore next */
|
||
|
|
if (strWidth >= width) {
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
return ' '.repeat((width - strWidth) >> 1) + str;
|
||
|
|
}
|
||
|
|
let mixin;
|
||
|
|
export function cliui(opts, _mixin) {
|
||
|
|
mixin = _mixin;
|
||
|
|
return new UI({
|
||
|
|
width: (opts === null || opts === void 0 ? void 0 : opts.width) || getWindowWidth(),
|
||
|
|
wrap: opts === null || opts === void 0 ? void 0 : opts.wrap
|
||
|
|
});
|
||
|
|
}
|