--- /dev/null
+var semver = require('semver')
+ , url = require('url')
+ , path = require('path')
+ , log = require('npmlog')
+
+ // versions where -headers.tar.gz started shipping
+ , headersTarballRange = '>= 3.0.0 || ~0.12.10 || ~0.10.42'
+ , bitsre = /\/win-(x86|x64)\//
+ , bitsreV3 = /\/win-(x86|ia32|x64)\// // io.js v3.x.x shipped with "ia32" but should
+ // have been "x86"
+
+// Captures all the logic required to determine download URLs, local directory and
+// file names. Inputs come from command-line switches (--target, --dist-url),
+// `process.version` and `process.release` where it exists.
+function processRelease (argv, gyp, defaultVersion, defaultRelease) {
+ var version = (semver.valid(argv[0]) && argv[0]) || gyp.opts.target || defaultVersion
+ , versionSemver = semver.parse(version)
+ , overrideDistUrl = gyp.opts['dist-url'] || gyp.opts.disturl
+ , isDefaultVersion
+ , isIojs
+ , name
+ , distBaseUrl
+ , baseUrl
+ , libUrl32
+ , libUrl64
+ , tarballUrl
+ , canGetHeaders
+
+ if (!versionSemver) {
+ // not a valid semver string, nothing we can do
+ return { version: version }
+ }
+ // flatten version into String
+ version = versionSemver.version
+
+ // defaultVersion should come from process.version so ought to be valid semver
+ isDefaultVersion = version === semver.parse(defaultVersion).version
+
+ // can't use process.release if we're using --target=x.y.z
+ if (!isDefaultVersion)
+ defaultRelease = null
+
+ if (defaultRelease) {
+ // v3 onward, has process.release
+ name = defaultRelease.name.replace(/io\.js/, 'iojs') // remove the '.' for directory naming purposes
+ isIojs = name === 'iojs'
+ } else {
+ // old node or alternative --target=
+ // semver.satisfies() doesn't like prerelease tags so test major directly
+ isIojs = versionSemver.major >= 1 && versionSemver.major < 4
+ name = isIojs ? 'iojs' : 'node'
+ }
+
+ // check for the nvm.sh standard mirror env variables
+ if (!overrideDistUrl) {
+ if (isIojs) {
+ if (process.env.IOJS_ORG_MIRROR) {
+ overrideDistUrl = process.env.IOJS_ORG_MIRROR
+ } else if (process.env.NVM_IOJS_ORG_MIRROR) {// remove on next semver-major
+ overrideDistUrl = process.env.NVM_IOJS_ORG_MIRROR
+ log.warn('download',
+ 'NVM_IOJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, ' +
+ 'please use IOJS_ORG_MIRROR')
+ }
+ } else {
+ if (process.env.NODEJS_ORG_MIRROR) {
+ overrideDistUrl = process.env.NODEJS_ORG_MIRROR
+ } else if (process.env.NVM_NODEJS_ORG_MIRROR) {// remove on next semver-major
+ overrideDistUrl = process.env.NVM_NODEJS_ORG_MIRROR
+ log.warn('download',
+ 'NVM_NODEJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, ' +
+ 'please use NODEJS_ORG_MIRROR')
+ }
+ }
+ }
+
+
+ if (overrideDistUrl)
+ distBaseUrl = overrideDistUrl.replace(/\/+$/, '')
+ else
+ distBaseUrl = isIojs ? 'https://iojs.org/download/release' : 'https://nodejs.org/dist'
+ distBaseUrl += '/v' + version + '/'
+
+ // new style, based on process.release so we have a lot of the data we need
+ if (defaultRelease && defaultRelease.headersUrl && !overrideDistUrl) {
+ baseUrl = url.resolve(defaultRelease.headersUrl, './')
+ libUrl32 = resolveLibUrl(name, defaultRelease.libUrl || baseUrl || distBaseUrl, 'x86', versionSemver.major)
+ libUrl64 = resolveLibUrl(name, defaultRelease.libUrl || baseUrl || distBaseUrl, 'x64', versionSemver.major)
+
+ return {
+ version: version,
+ semver: versionSemver,
+ name: name,
+ baseUrl: baseUrl,
+ tarballUrl: defaultRelease.headersUrl,
+ shasumsUrl: url.resolve(baseUrl, 'SHASUMS256.txt'),
+ versionDir: (name !== 'node' ? name + '-' : '') + version,
+ libUrl32: libUrl32,
+ libUrl64: libUrl64,
+ libPath32: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl32).path)),
+ libPath64: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl64).path))
+ }
+ }
+
+ // older versions without process.release are captured here and we have to make
+ // a lot of assumptions, additionally if you --target=x.y.z then we can't use the
+ // current process.release
+
+ baseUrl = distBaseUrl
+ libUrl32 = resolveLibUrl(name, baseUrl, 'x86', versionSemver.major)
+ libUrl64 = resolveLibUrl(name, baseUrl, 'x64', versionSemver.major)
+ // making the bold assumption that anything with a version number >3.0.0 will
+ // have a *-headers.tar.gz file in its dist location, even some frankenstein
+ // custom version
+ canGetHeaders = semver.satisfies(versionSemver, headersTarballRange)
+ tarballUrl = url.resolve(baseUrl, name + '-v' + version + (canGetHeaders ? '-headers' : '') + '.tar.gz')
+
+ return {
+ version: version,
+ semver: versionSemver,
+ name: name,
+ baseUrl: baseUrl,
+ tarballUrl: tarballUrl,
+ shasumsUrl: url.resolve(baseUrl, 'SHASUMS256.txt'),
+ versionDir: (name !== 'node' ? name + '-' : '') + version,
+ libUrl32: libUrl32,
+ libUrl64: libUrl64,
+ libPath32: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl32).path)),
+ libPath64: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl64).path))
+ }
+}
+
+function normalizePath (p) {
+ return path.normalize(p).replace(/\\/g, '/')
+}
+
+function resolveLibUrl (name, defaultUrl, arch, versionMajor) {
+ var base = url.resolve(defaultUrl, './')
+ , hasLibUrl = bitsre.test(defaultUrl) || (versionMajor === 3 && bitsreV3.test(defaultUrl))
+
+ if (!hasLibUrl) {
+ // let's assume it's a baseUrl then
+ if (versionMajor >= 1)
+ return url.resolve(base, 'win-' + arch +'/' + name + '.lib')
+ // prior to io.js@1.0.0 32-bit node.lib lives in /, 64-bit lives in /x64/
+ return url.resolve(base, (arch === 'x64' ? 'x64/' : '') + name + '.lib')
+ }
+
+ // else we have a proper url to a .lib, just make sure it's the right arch
+ return defaultUrl.replace(versionMajor === 3 ? bitsreV3 : bitsre, '/win-' + arch + '/')
+}
+
+module.exports = processRelease
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