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Direktori : /opt/alt/alt-nodejs14/root/lib/node_modules/npm/lib/search/ |
Current File : //opt/alt/alt-nodejs14/root/lib/node_modules/npm/lib/search/format-package-stream.js |
'use strict' var ms = require('mississippi') var jsonstream = require('JSONStream') var columnify = require('columnify') // This module consumes package data in the following format: // // { // name: String, // description: String, // maintainers: [{ username: String, email: String }], // keywords: String | [String], // version: String, // date: Date // can be null, // } // // The returned stream will format this package data // into a byte stream of formatted, displayable output. module.exports = formatPackageStream function formatPackageStream (opts) { opts = opts || {} if (opts.json) { return jsonOutputStream() } else { return textOutputStream(opts) } } function jsonOutputStream () { return ms.pipeline.obj( ms.through.obj(), jsonstream.stringify('[', ',', ']'), ms.through() ) } function textOutputStream (opts) { var line = 0 return ms.through.obj(function (pkg, enc, cb) { cb(null, prettify(pkg, ++line, opts)) }) } function prettify (data, num, opts) { opts = opts || {} var truncate = !opts.long var pkg = normalizePackage(data, opts) var columns = opts.description ? ['name', 'description', 'author', 'date', 'version', 'keywords'] : ['name', 'author', 'date', 'version', 'keywords'] if (opts.parseable) { return columns.map(function (col) { return pkg[col] && ('' + pkg[col]).replace(/\t/g, ' ') }).join('\t') } var output = columnify( [pkg], { include: columns, showHeaders: num <= 1, columnSplitter: ' | ', truncate: truncate, config: { name: { minWidth: 25, maxWidth: 25, truncate: false, truncateMarker: '' }, description: { minWidth: 20, maxWidth: 20 }, author: { minWidth: 15, maxWidth: 15 }, date: { maxWidth: 11 }, version: { minWidth: 8, maxWidth: 8 }, keywords: { maxWidth: Infinity } } } ) output = trimToMaxWidth(output) if (opts.color) { output = highlightSearchTerms(output, opts.args) } return output } var colors = [31, 33, 32, 36, 34, 35] var cl = colors.length function addColorMarker (str, arg, i) { var m = i % cl + 1 var markStart = String.fromCharCode(m) var markEnd = String.fromCharCode(0) if (arg.charAt(0) === '/') { return str.replace( new RegExp(arg.substr(1, arg.length - 2), 'gi'), function (bit) { return markStart + bit + markEnd } ) } // just a normal string, do the split/map thing var pieces = str.toLowerCase().split(arg.toLowerCase()) var p = 0 return pieces.map(function (piece) { piece = str.substr(p, piece.length) var mark = markStart + str.substr(p + piece.length, arg.length) + markEnd p += piece.length + arg.length return piece + mark }).join('') } function colorize (line) { for (var i = 0; i < cl; i++) { var m = i + 1 var color = '\u001B[' + colors[i] + 'm' line = line.split(String.fromCharCode(m)).join(color) } var uncolor = '\u001B[0m' return line.split('\u0000').join(uncolor) } function getMaxWidth () { var cols try { var tty = require('tty') var stdout = process.stdout cols = !tty.isatty(stdout.fd) ? Infinity : process.stdout.getWindowSize()[0] cols = (cols === 0) ? Infinity : cols } catch (ex) { cols = Infinity } return cols } function trimToMaxWidth (str) { var maxWidth = getMaxWidth() return str.split('\n').map(function (line) { return line.slice(0, maxWidth) }).join('\n') } function highlightSearchTerms (str, terms) { terms.forEach(function (arg, i) { str = addColorMarker(str, arg, i) }) return colorize(str).trim() } function normalizePackage (data, opts) { opts = opts || {} return { name: data.name, description: opts.description ? data.description : '', author: (data.maintainers || []).map(function (m) { return '=' + m.username }).join(' '), keywords: Array.isArray(data.keywords) ? data.keywords.join(' ') : typeof data.keywords === 'string' ? data.keywords.replace(/[,\s]+/, ' ') : '', version: data.version, date: (data.date && (data.date.toISOString() // remove time .split('T').join(' ') .replace(/:[0-9]{2}\.[0-9]{3}Z$/, '')) .slice(0, -5)) || 'prehistoric' } }