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Diffstat (limited to 'node_modules/cliui/build/lib/index.js')
-rw-r--r-- | node_modules/cliui/build/lib/index.js | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/node_modules/cliui/build/lib/index.js b/node_modules/cliui/build/lib/index.js new file mode 100644 index 0000000..b6eb054 --- /dev/null +++ b/node_modules/cliui/build/lib/index.js @@ -0,0 +1,287 @@ +'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 + }); +} |