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400 lines
12 KiB
400 lines
12 KiB
'use strict';
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var shortSemverRegEx = /^([~\^])?(0|[1-9]\d*)(?:\.(0|[1-9]\d*))?$/;
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var semverRegEx = /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-([\da-z-]+(?:\.[\da-z-]+)*))?(\+[\da-z-]+)?$/i;
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exports.semverRegEx = semverRegEx;
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exports.shortSemverRegEx = shortSemverRegEx;
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var Symbol = require('es6-symbol');
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var MAJOR = Symbol('major');
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var MINOR = Symbol('minor');
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var PATCH = Symbol('patch');
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var PRE = Symbol('pre');
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var BUILD = Symbol('build');
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var TAG = Symbol('tag');
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var numRegEx = /^\d+$/;
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function Semver(version) {
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var semver = version.match(semverRegEx);
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if (!semver) {
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this[TAG] = version;
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return;
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}
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this[MAJOR] = parseInt(semver[1], 10);
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this[MINOR] = parseInt(semver[2], 10);
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this[PATCH] = parseInt(semver[3], 10);
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this[PRE] = semver[4] && semver[4].split('.');
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this[BUILD] = semver[5];
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}
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Object.defineProperty(Semver.prototype, 'major', {
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get: function major () {
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return this[MAJOR];
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}
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});
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Object.defineProperty(Semver.prototype, 'minor', {
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get: function minor () {
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return this[MINOR];
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}
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});
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Object.defineProperty(Semver.prototype, 'patch', {
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get: function patch () {
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return this[PATCH];
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}
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});
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Object.defineProperty(Semver.prototype, 'pre', {
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get: function pre () {
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return this[PRE];
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}
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});
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Object.defineProperty(Semver.prototype, 'build', {
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get: function build () {
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return this[BUILD];
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}
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});
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Object.defineProperty(Semver.prototype, 'tag', {
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get: function tag () {
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return this[TAG];
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}
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});
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Semver.prototype.gt = function gt(version) {
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return Semver.compare(this, version) === 1;
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}
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Semver.prototype.lt = function lt (version) {
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return Semver.compare(this, version) === -1;
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}
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Semver.prototype.eq = function eq (version) {
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if (!(version instanceof Semver))
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version = new Semver(version);
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if (this[TAG] && version[TAG])
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return this[TAG] === version[TAG];
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if (this[TAG] || version[TAG])
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return false;
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if (this[MAJOR] !== version[MAJOR])
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return false;
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if (this[MINOR] !== version[MINOR])
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return false;
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if (this[PATCH] !== version[PATCH])
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return false;
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if (this[PRE] === undefined && version[PRE] === undefined)
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return true;
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if (this[PRE] === undefined || version[PRE] === undefined)
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return false;
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if (this[PRE].length !== version[PRE].length)
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return false;
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for (var i = 0; i < this[PRE].length; i++) {
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if (this[PRE][i] !== version[PRE][i])
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return false;
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}
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return this[BUILD] === version[BUILD];
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}
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Semver.prototype.matches = function matches (range, unstable) {
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unstable = unstable || false;
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if (!(range instanceof SemverRange))
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range = new SemverRange(range);
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return range.has(this, unstable);
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}
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Semver.prototype.toString = function toString () {
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if (this[TAG])
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return this[TAG];
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return this[MAJOR] + '.' + this[MINOR] + '.' + this[PATCH] + (this[PRE] ? '-' + this[PRE].join('.') : '') + (this[BUILD] ? this[BUILD] : '');
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}
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Semver.isValid = function isValid (version) {
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var semver = version.match(semverRegEx);
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return semver && semver[2] !== undefined && semver[3] !== undefined;
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}
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Semver.compare = function compare (v1, v2) {
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if (!(v1 instanceof Semver))
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v1 = new Semver(v1);
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if (!(v2 instanceof Semver))
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v2 = new Semver(v2);
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// not semvers - tags have equal precedence
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if (v1[TAG] && v2[TAG])
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return 0;
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// semver beats tag version
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if (v1[TAG])
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return -1;
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if (v2[TAG])
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return 1;
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// compare version numbers
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if (v1[MAJOR] !== v2[MAJOR])
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return v1[MAJOR] > v2[MAJOR] ? 1 : -1;
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if (v1[MINOR] !== v2[MINOR])
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return v1[MINOR] > v2[MINOR] ? 1 : -1;
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if (v1[PATCH] !== v2[PATCH])
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return v1[PATCH] > v2[PATCH] ? 1 : -1;
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if (!v1[PRE] && !v2[PRE])
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return 0;
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if (!v1[PRE])
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return 1;
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if (!v2[PRE])
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return -1;
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// prerelease comparison
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for (var i = 0, l = Math.min(v1[PRE].length, v2[PRE].length); i < l; i++) {
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if (v1[PRE][i] !== v2[PRE][i]) {
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var isNum1 = v1[PRE][i].match(numRegEx);
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var isNum2 = v2[PRE][i].match(numRegEx);
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// numeric has lower precedence
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if (isNum1 && !isNum2)
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return -1;
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if (isNum2 && !isNum1)
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return 1;
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// compare parts
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if (isNum1 && isNum2)
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return parseInt(v1[PRE][i], 10) > parseInt(v2[PRE][i], 10) ? 1 : -1;
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else
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return v1[PRE][i] > v2[PRE][i] ? 1 : -1;
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}
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}
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if (v1[PRE].length === v2[PRE].length)
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return 0;
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// more pre-release fields win if equal
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return v1[PRE].length > v2[PRE].length ? 1 : -1;
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}
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exports.Semver = Semver;
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var WILDCARD_RANGE = 0;
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var MAJOR_RANGE = 1;
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var STABLE_RANGE = 2;
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var EXACT_RANGE = 3;
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var TYPE = Symbol('type');
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var VERSION = Symbol('version');
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function SemverRange(versionRange) {
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if (versionRange === '*' || versionRange === '') {
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this[TYPE] = WILDCARD_RANGE;
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return;
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}
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var shortSemver = versionRange.match(shortSemverRegEx);
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if (shortSemver) {
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if (shortSemver[1])
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versionRange = versionRange.substr(1);
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if (shortSemver[3] === undefined) {
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// ^, ~ mean the same thing for a single major
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this[VERSION] = new Semver(versionRange + '.0.0');
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this[TYPE] = MAJOR_RANGE;
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}
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else {
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this[VERSION] = new Semver(versionRange + '.0');
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// ^ only becomes major range for major > 0
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if (shortSemver[1] === '^' && shortSemver[2] !== '0')
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this[TYPE] = MAJOR_RANGE;
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else
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this[TYPE] = STABLE_RANGE;
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}
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// empty pre array === support prerelease ranges
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this[VERSION][PRE] = this[VERSION][PRE] || [];
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}
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else if (versionRange[0] === '^') {
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this[VERSION] = new Semver(versionRange.substr(1));
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if (this[VERSION][MAJOR] === 0) {
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if (this[VERSION][MINOR] === 0)
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this[TYPE] = EXACT_RANGE;
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else
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this[TYPE] = STABLE_RANGE;
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}
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else {
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this[TYPE] = MAJOR_RANGE;
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}
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}
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else if (versionRange[0] === '~') {
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this[VERSION] = new Semver(versionRange.substr(1));
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this[TYPE] = STABLE_RANGE;
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}
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else {
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this[VERSION] = new Semver(versionRange);
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this[TYPE] = EXACT_RANGE;
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}
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if (this[VERSION][TAG] && this[TYPE] !== EXACT_RANGE)
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this[TYPE] = EXACT_RANGE;
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}
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Object.defineProperty(SemverRange.prototype, 'isExact', {
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get: function isExact () {
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return this[TYPE] === EXACT_RANGE;
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}
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});
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Object.defineProperty(SemverRange.prototype, 'isStable', {
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get: function isStable () {
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return this[TYPE] === STABLE_RANGE;
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}
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});
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Object.defineProperty(SemverRange.prototype, 'isMajor', {
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get: function isMajor () {
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return this[TYPE] === MAJOR_RANGE;
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}
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});
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Object.defineProperty(SemverRange.prototype, 'isWildcard', {
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get: function isWildcard () {
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return this[TYPE] === WILDCARD_RANGE;
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}
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});
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Object.defineProperty(SemverRange.prototype, 'type', {
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get: function type () {
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switch (this[TYPE]) {
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case WILDCARD_RANGE:
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return 'wildcard';
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case MAJOR_RANGE:
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return 'major';
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case STABLE_RANGE:
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return 'stable';
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case EXACT_RANGE:
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return 'exact';
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}
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}
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});
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Object.defineProperty(SemverRange.prototype, 'version', {
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get: function version () {
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return this[VERSION];
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}
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});
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SemverRange.prototype.gt = function gt (range) {
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return SemverRange.compare(this, range) === 1;
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}
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SemverRange.prototype.lt = function lt (range) {
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return SemverRange.compare(this, range) === -1;
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}
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SemverRange.prototype.eq = function eq (range) {
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return SemverRange.compare(this, range) === 0;
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}
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SemverRange.prototype.has = function has (version, unstable) {
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unstable = unstable || false;
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if (!(version instanceof Semver))
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version = new Semver(version);
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if (this[TYPE] === WILDCARD_RANGE)
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return true;
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if (this[TYPE] === EXACT_RANGE)
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return this[VERSION].eq(version);
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if (version[TAG])
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return false;
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if (version.lt(this[VERSION]))
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return false;
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if (version[PRE] && !unstable)
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return this[VERSION][MAJOR] === version[MAJOR] && this[VERSION][MINOR] === version[MINOR] && this[VERSION][PATCH] === version[PATCH];
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if (this[TYPE] === MAJOR_RANGE)
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return this[VERSION][MAJOR] === version[MAJOR];
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return this[VERSION][MAJOR] === version[MAJOR] && this[VERSION][MINOR] === version[MINOR];
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}
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SemverRange.prototype.contains = function contains (range) {
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if (!(range instanceof SemverRange))
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range = new SemverRange(range);
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if (this[TYPE] === WILDCARD_RANGE)
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return true;
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if (range[TYPE] === WILDCARD_RANGE)
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return false;
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return range[TYPE] >= this[TYPE] && this.has(range[VERSION], true);
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}
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SemverRange.prototype.intersect = function intersect (range) {
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if (!(range instanceof SemverRange))
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range = new SemverRange(range);
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if (this[TYPE] === WILDCARD_RANGE && range[TYPE] === WILDCARD_RANGE)
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return this;
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if (this[TYPE] === WILDCARD_RANGE)
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return range;
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if (range[TYPE] === WILDCARD_RANGE)
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return this;
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if (this[TYPE] === EXACT_RANGE)
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return range.has(this[VERSION], true) ? this : undefined;
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if (range[TYPE] === EXACT_RANGE)
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return this.has(range[VERSION], true) ? range : undefined;
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var higherRange, lowerRange, polarity;
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if (range[VERSION].gt(this[VERSION])) {
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higherRange = range;
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lowerRange = this;
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polarity = true;
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}
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else {
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higherRange = this;
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lowerRange = range;
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polarity = false;
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}
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if (!lowerRange.has(higherRange[VERSION], true))
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return;
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if (lowerRange[TYPE] === MAJOR_RANGE)
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return polarity ? range : this;
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var intersection = new SemverRange(higherRange[VERSION].toString());
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intersection[TYPE] = STABLE_RANGE;
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return intersection;
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}
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SemverRange.prototype.bestMatch = function bestMatch (versions, unstable) {
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unstable = unstable || false;
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var self = this;
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var maxSemver;
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versions.forEach(function(version) {
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if (!(version instanceof Semver))
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version = new Semver(version);
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if (!self.has(version, unstable))
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return;
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if (!unstable && version[PRE]) {
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if (self[TYPE] === WILDCARD_RANGE || !self[VERSION][PRE] || self[VERSION][MAJOR] !== version[MAJOR] ||
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self[VERSION][MINOR] !== version[MINOR] || self[VERSION][PATCH] !== version[PATCH])
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return;
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}
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if (!maxSemver) {
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maxSemver = version;
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}
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else if (Semver.compare(version, maxSemver) === 1) {
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maxSemver = version;
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}
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});
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return maxSemver;
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}
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SemverRange.prototype.toString = function toString () {
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var version = this[VERSION];
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switch (this[TYPE]) {
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case WILDCARD_RANGE:
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return '*';
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case MAJOR_RANGE:
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if (version[MAJOR] === 0 && version[MINOR] === 0 && version[PATCH] === 0)
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return '0';
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if (version[PRE] && version[PRE].length === 0 && version[PATCH] === 0)
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return '^' + version[MAJOR] + '.' + version[MINOR];
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return '^' + version.toString();
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case STABLE_RANGE:
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if (version[PRE] && version[PRE].length === 0 && version[PATCH] === 0)
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return version[MAJOR] + '.' + version[MINOR];
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return '~' + version.toString();
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case EXACT_RANGE:
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return version.toString();
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}
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}
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SemverRange.match = function match (range, version, unstable) {
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unstable = unstable || false;
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if (!(version instanceof Semver))
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version = new Semver(version);
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return version.matches(range, unstable);
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}
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SemverRange.isValid = function isValid (range) {
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var semverRange = new SemverRange(range);
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return semverRange[TYPE] !== EXACT_RANGE || semverRange[VERSION][TAG] === undefined;
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}
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SemverRange.compare = function compare (r1, r2) {
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if (!(r1 instanceof SemverRange))
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r1 = new SemverRange(r1);
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if (!(r2 instanceof SemverRange))
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r2 = new SemverRange(r2);
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if (r1[TYPE] === WILDCARD_RANGE && r2[TYPE] === WILDCARD_RANGE)
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return 0;
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if (r1[TYPE] === WILDCARD_RANGE)
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return 1;
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if (r2[TYPE] === WILDCARD_RANGE)
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return -1;
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var cmp = Semver.compare(r1[VERSION], r2[VERSION]);
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if (cmp !== 0) {
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return cmp;
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}
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if (r1[TYPE] === r2[TYPE])
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return 0;
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return r1[TYPE] > r2[TYPE] ? 1 : -1;
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}
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exports.SemverRange = SemverRange;
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