| var path = require('path') |
| var github = require('github-from-package') |
| var home = require('os-homedir') |
| var expandTemplate = require('expand-template')() |
| |
| function getDownloadUrl (opts) { |
| var pkgName = opts.pkg.name.replace(/^@\w+\//, '') |
| return expandTemplate(urlTemplate(opts), { |
| name: pkgName, |
| package_name: pkgName, |
| version: opts.pkg.version, |
| major: opts.pkg.version.split('.')[0], |
| minor: opts.pkg.version.split('.')[1], |
| patch: opts.pkg.version.split('.')[2], |
| prerelease: opts.pkg.version.split('-')[1], |
| build: opts.pkg.version.split('+')[1], |
| abi: opts.abi || process.versions.modules, |
| node_abi: process.versions.modules, |
| runtime: opts.runtime || 'node', |
| platform: opts.platform, |
| arch: opts.arch, |
| libc: opts.libc || process.env.LIBC || '', |
| configuration: (opts.debug ? 'Debug' : 'Release'), |
| module_name: opts.pkg.binary && opts.pkg.binary.module_name |
| }) |
| } |
| |
| function urlTemplate (opts) { |
| if (typeof opts.download === 'string') { |
| return opts.download |
| } |
| |
| var packageName = '{name}-v{version}-{runtime}-v{abi}-{platform}{libc}-{arch}.tar.gz' |
| var hostMirrorUrl = getHostMirrorUrl(opts) |
| |
| if (hostMirrorUrl) { |
| return hostMirrorUrl + '/v{version}/' + packageName |
| } |
| |
| if (opts.pkg.binary) { |
| return [ |
| opts.pkg.binary.host, |
| opts.pkg.binary.remote_path, |
| opts.pkg.binary.package_name || packageName |
| ].map(function (path) { |
| return trimSlashes(path) |
| }).filter(Boolean).join('/') |
| } |
| |
| return github(opts.pkg) + '/releases/download/v{version}/' + packageName |
| } |
| |
| function getHostMirrorUrl (opts) { |
| var propName = 'npm_config_' + opts.pkg.name + '_binary_host' |
| return process.env[propName] || process.env[propName + '_mirror'] |
| } |
| |
| function trimSlashes (str) { |
| if (str) return str.replace(/^\.\/|^\/|\/$/g, '') |
| } |
| |
| function cachedPrebuild (url) { |
| return path.join(prebuildCache(), url.replace(/[^a-zA-Z0-9.]+/g, '-')) |
| } |
| |
| function npmCache () { |
| var env = process.env |
| return env.npm_config_cache || (env.APPDATA ? path.join(env.APPDATA, 'npm-cache') : path.join(home(), '.npm')) |
| } |
| |
| function prebuildCache () { |
| return path.join(npmCache(), '_prebuilds') |
| } |
| |
| function tempFile (cached) { |
| return cached + '.' + process.pid + '-' + Math.random().toString(16).slice(2) + '.tmp' |
| } |
| |
| function localPrebuild (url) { |
| return path.join('prebuilds', path.basename(url)) |
| } |
| |
| exports.getDownloadUrl = getDownloadUrl |
| exports.urlTemplate = urlTemplate |
| exports.cachedPrebuild = cachedPrebuild |
| exports.localPrebuild = localPrebuild |
| exports.prebuildCache = prebuildCache |
| exports.npmCache = npmCache |
| exports.tempFile = tempFile |