/
semver.js
336 lines (313 loc) · 9.72 KB
/
semver.js
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// See http://semver.org/
// This implementation is a *hair* less strict in that it allows
// v1.2.3 things, and also tags that don't begin with a char.
var semver = "[v=]*([0-9]+)" // major
+ "\\.([0-9]+)" // minor
+ "\\.([0-9]+)" // patch
+ "(-[0-9]+-?)?" // build
+ "([a-zA-Z-][a-zA-Z0-9-\.:]*)?" // tag
, exprComparator = "^((<|>)?=?)("+semver+")$|^$"
, xRange = "((?:<|>)?=?)([0-9]+|x|X)(?:\\.([0-9]+|x|X)(?:\\.([0-9]+|x|X))?)?"
, exprSpermy = "(?:~>?)"+xRange
, expressions = exports.expressions =
{ parse : new RegExp("^\\s*"+semver+"\\s*$")
, parsePackage : new RegExp("^\\s*([^\/]+)[-@](" +semver+")\\s*$")
, parseRange : new RegExp(
"^\\s*(" + semver + ")\\s+-\\s+(" + semver + ")\\s*$")
, validComparator : new RegExp("^"+exprComparator+"$")
, parseXRange : new RegExp("^"+xRange+"$")
, parseSpermy : new RegExp("^"+exprSpermy+"$")
}
Object.getOwnPropertyNames(expressions).forEach(function (i) {
exports[i] = function (str) { return (str || "").match(expressions[i]) }
})
exports.rangeReplace = ">=$1 <=$7"
exports.clean = clean
exports.compare = compare
exports.satisfies = satisfies
exports.gt = gt
exports.lt = lt
exports.valid = valid
exports.validPackage = validPackage
exports.validRange = validRange
exports.maxSatisfying = maxSatisfying
function clean (ver) {
v = exports.parse(ver)
if (!v) return v
return [v[1]||'', v[2]||'', v[3]||''].join(".") + (v[4]||'') + (v[5]||'')
}
function valid (version) {
return exports.parse(version) && version.trim().replace(/^[v=]+/, '')
}
function validPackage (version) {
return version.match(expressions.parsePackage) && version.trim()
}
// range can be one of:
// "1.0.3 - 2.0.0" range, inclusive, like ">=1.0.3 <=2.0.0"
// ">1.0.2" like 1.0.3 - 9999.9999.9999
// ">=1.0.2" like 1.0.2 - 9999.9999.9999
// "<2.0.0" like 0.0.0 - 1.9999.9999
// ">1.0.2 <2.0.0" like 1.0.3 - 1.9999.9999
var starExpression = /(<|>)?=?\s*\*/g
, starReplace = ""
, compTrimExpression = new RegExp("((<|>)?=?)\\s*("+semver+")", "g")
, compTrimReplace = "$1$3"
function toComparators (range) {
return (range || "").trim()
.replace(expressions.parseRange, exports.rangeReplace)
.split(/\s+/)
.map(replaceSpermies)
.map(replaceXRanges)
.join(" ")
.replace(compTrimExpression, compTrimReplace)
.replace(starExpression, starReplace)
.split("||")
.map(function (orchunk) {
return orchunk
.trim()
.split(/\s+/)
.filter(function (c) { return c.match(expressions.validComparator) })
})
.filter(function (c) { return c.length })
}
// "2.x","2.x.x" --> ">=2.0.0 <2.1"
// "2.3.x" --> ">=2.3.0 <2.4.0"
function replaceXRanges (ranges) {
return ranges.split(/\s+/)
.map(replaceXRange)
.join(" ")
}
function replaceXRange (version) {
return version.trim().replace(expressions.parseXRange,
function (v, gtlt, M, m, p) {
var anyX = !M || M.toLowerCase() === "x"
|| !m || m.toLowerCase() === "x"
|| !p || p.toLowerCase() === "x"
if (gtlt && anyX) {
// just replace x'es with zeroes
;(!M || M.toLowerCase() === "x") && (M = 0)
;(!m || m.toLowerCase() === "x") && (m = 0)
;(!p || p.toLowerCase() === "x") && (p = 0)
return gtlt + M+"."+m+"."+p
}
if (!M || M.toLowerCase() === "x") {
return "*" // allow any
}
if (!m || m.toLowerCase() === "x") {
return ">="+M+".0.0a <"+(+M+1)+".0.0"
}
if (!p || p.toLowerCase() === "x") {
return ">="+M+"."+m+".0a <"+M+"."+(+m+1)+".0"
}
return v // impossible?
})
}
// ~, ~> --> * (any, kinda silly)
// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0 <3.0.0
// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0 <2.1.0
// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0 <1.3.0
// ~1.2.3, ~>1.2.3 --> >=1.2.3 <1.3.0
// ~1.2.0, ~>1.2.0 --> >=1.2.0 <1.3.0
function replaceSpermies (version) {
return version.trim().replace(expressions.parseSpermy,
function (v, gtlt, M, m, p) {
if (gtlt) throw new Error(
"Using '"+gtlt+"' with ~ makes no sense. Don't do it.")
if (!M || M.toLowerCase() === "x") {
return "*"
}
// ~1 == >=1.0.0 <2.0.0
if (!m || m.toLowerCase() === "x") {
return ">="+M+".0.0 <"+(+M+1)+".0.0"
}
// ~1.2 == >=1.2.0 <1.3.0
if (!p || p.toLowerCase() === "x") {
return ">="+M+"."+m+".0 <"+M+"."+(+m+1)+".0"
}
// ~1.2.3 == >=1.2.3 <1.3.0
return ">="+M+"."+m+"."+p+" <"+M+"."+(+m+1)+".0"
})
}
function validRange (range) {
range = range.trim().replace(starExpression, starReplace)
var c = toComparators(range)
return (c.length === 0)
? null
: c.map(function (c) { return c.join(" ") }).join("||")
}
// returns the highest satisfying version in the list, or undefined
function maxSatisfying (versions, range) {
return versions
.filter(function (v) { return satisfies(v, range) })
.sort(compare)
.pop()
}
function satisfies (version, range) {
version = valid(version)
if (!version) return false
range = toComparators(range)
for (var i = 0, l = range.length ; i < l ; i ++) {
var ok = false
for (var j = 0, ll = range[i].length ; j < ll ; j ++) {
var r = range[i][j]
, gtlt = r.charAt(0) === ">" ? gt
: r.charAt(0) === "<" ? lt
: false
, eq = r.charAt(!!gtlt) === "="
, sub = (!!eq) + (!!gtlt)
if (!gtlt) eq = true
r = r.substr(sub)
r = (r === "") ? r : valid(r)
ok = (r === "") || (eq && r === version) || (gtlt && gtlt(version, r))
if (!ok) break
}
if (ok) return true
}
return false
}
// return v1 > v2 ? 1 : -1
function compare (v1, v2) {
return v1 === v2 ? 0 : gt(v1, v2) ? 1 : -1
}
function lt (v1, v2) { return gt(v2, v1) }
// return v1 > v2
function num (v) {
return v === undefined ? -1 : parseInt((v||"0").replace(/[^0-9]+/g, ''), 10)
}
function gt (v1, v2) {
v1 = exports.parse(v1)
v2 = exports.parse(v2)
if (!v1 || !v2) return false
for (var i = 1; i < 5; i ++) {
v1[i] = num(v1[i])
v2[i] = num(v2[i])
if (v1[i] > v2[i]) return true
else if (v1[i] !== v2[i]) return false
}
// no tag is > than any tag, or use lexicographical order.
var tag1 = v1[5] || ""
, tag2 = v2[5] || ""
return !!tag2 && (!tag1 || tag1 > tag2)
}
if (module === require.main) { // tests below
var assert = require("assert")
; [ ["0.0.0", "0.0.0foo"]
, ["0.0.1", "0.0.0"]
, ["1.0.0", "0.9.9"]
, ["0.10.0", "0.9.0"]
, ["0.99.0", "0.10.0"]
, ["2.0.0", "1.2.3"]
, ["v0.0.0", "0.0.0foo"]
, ["v0.0.1", "0.0.0"]
, ["v1.0.0", "0.9.9"]
, ["v0.10.0", "0.9.0"]
, ["v0.99.0", "0.10.0"]
, ["v2.0.0", "1.2.3"]
, ["0.0.0", "v0.0.0foo"]
, ["0.0.1", "v0.0.0"]
, ["1.0.0", "v0.9.9"]
, ["0.10.0", "v0.9.0"]
, ["0.99.0", "v0.10.0"]
, ["2.0.0", "v1.2.3"]
, ["1.2.3", "1.2.3-asdf"]
, ["1.2.3-4", "1.2.3"]
, ["1.2.3-4-foo", "1.2.3"]
, ["1.2.3-5", "1.2.3-5-foo"]
, ["1.2.3-5", "1.2.3-4"]
].forEach(function (v) {
assert.ok(gt(v[0], v[1]), "gt('"+v[0]+"', '"+v[1]+"')")
assert.ok(lt(v[1], v[0]), "lt('"+v[1]+"', '"+v[0]+"')")
assert.ok(!gt(v[1], v[0]), "!gt('"+v[1]+"', '"+v[0]+"')")
assert.ok(!lt(v[0], v[1]), "!lt('"+v[0]+"', '"+v[1]+"')")
})
; [ ["1.0.0 - 2.0.0", "1.2.3"]
, ["1.0.0", "1.0.0"]
, [">=*", "0.2.4"]
, ["", "1.0.0"]
, ["*", "1.2.3"]
, ["*", "v1.2.3-foo"]
, [">=1.0.0", "1.0.0"]
, [">=1.0.0", "1.0.1"]
, [">=1.0.0", "1.1.0"]
, [">1.0.0", "1.0.1"]
, [">1.0.0", "1.1.0"]
, ["<=2.0.0", "2.0.0"]
, ["<=2.0.0", "1.9999.9999"]
, ["<=2.0.0", "0.2.9"]
, ["<2.0.0", "1.9999.9999"]
, ["<2.0.0", "0.2.9"]
, [">= 1.0.0", "1.0.0"]
, [">= 1.0.0", "1.0.1"]
, [">= 1.0.0", "1.1.0"]
, ["> 1.0.0", "1.0.1"]
, ["> 1.0.0", "1.1.0"]
, ["<= 2.0.0", "2.0.0"]
, ["<= 2.0.0", "1.9999.9999"]
, ["<= 2.0.0", "0.2.9"]
, ["< 2.0.0", "1.9999.9999"]
, ["<\t2.0.0", "0.2.9"]
, [">=0.1.97", "v0.1.97"]
, [">=0.1.97", "0.1.97"]
, ["0.1.20 || 1.2.4", "1.2.4"]
, [">=0.2.3 || <0.0.1", "0.0.0"]
, [">=0.2.3 || <0.0.1", "0.2.3"]
, [">=0.2.3 || <0.0.1", "0.2.4"]
, ["||", "1.3.4"]
, ["2.x.x", "2.1.3"]
, ["1.2.x", "1.2.3"]
, ["1.2.x || 2.x", "2.1.3"]
, ["1.2.x || 2.x", "1.2.3"]
, ["x", "1.2.3"]
, ["2", "2.1.2"]
, ["2.3", "2.3.1"]
, ["~2.4", "2.4.0"] // >=2.4.0 <2.5.0
, ["~2.4", "2.4.5"]
, ["~>3.2.1", "3.2.2"] // >=3.2.1 <3.3.0
, ["~1", "1.2.3"] // >=1.0.0 <2.0.0
, ["~>1", "1.2.3"]
, ["~1.0", "1.0.2"] // >=1.0.0 <1.1.0
, ["<1", "1.0.0beta"]
, [">=1", "1.0.0"]
, ["<1.2", "1.1.1"]
, ["1", "1.0.0beta"]
].forEach(function (v) {
assert.ok(satisfies(v[1], v[0]), v[0]+" satisfied by "+v[1])
})
// negative tests
; [ ["1.0.0 - 2.0.0", "2.2.3"]
, ["1.0.0", "1.0.1"]
, [">=1.0.0", "0.0.0"]
, [">=1.0.0", "0.0.1"]
, [">=1.0.0", "0.1.0"]
, [">1.0.0", "0.0.1"]
, [">1.0.0", "0.1.0"]
, ["<=2.0.0", "3.0.0"]
, ["<=2.0.0", "2.9999.9999"]
, ["<=2.0.0", "2.2.9"]
, ["<2.0.0", "2.9999.9999"]
, ["<2.0.0", "2.2.9"]
, [">=0.1.97", "v0.1.93"]
, [">=0.1.97", "0.1.93"]
, ["0.1.20 || 1.2.4", "1.2.3"]
, [">=0.2.3 || <0.0.1", "0.0.3"]
, [">=0.2.3 || <0.0.1", "0.2.2"]
, ["2.x.x", "1.1.3"]
, ["2.x.x", "3.1.3"]
, ["1.2.x", "1.3.3"]
, ["1.2.x || 2.x", "3.1.3"]
, ["1.2.x || 2.x", "1.1.3"]
, ["2", "1.1.2"]
, ["2.3", "2.4.1"]
, ["~2.4", "2.5.0"] // >=2.4.0 <2.5.0
, ["~2.4", "2.3.9"]
, ["~>3.2.1", "3.3.2"] // >=3.2.1 <3.3.0
, ["~>3.2.1", "3.2.0"] // >=3.2.1 <3.3.0
, ["~1", "0.2.3"] // >=1.0.0 <2.0.0
, ["~>1", "2.2.3"]
, ["~1.0", "1.1.0"] // >=1.0.0 <1.1.0
, ["<1", "1.0.0"]
, [">=1.2", "1.1.1"]
].forEach(function (v) {
assert.ok(!satisfies(v[1], v[0]), v[0]+" not satisfied by "+v[1])
})
}