461 lines
12 KiB
JavaScript
461 lines
12 KiB
JavaScript
/*!
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* node-sass: lib/extensions.js
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*/
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var eol = require('os').EOL,
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fs = require('fs'),
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pkg = require('../package.json'),
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mkdir = require('mkdirp'),
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path = require('path'),
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defaultBinaryDir = path.join(__dirname, '..', 'vendor'),
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trueCasePathSync = require('true-case-path');
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/**
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* Get the human readable name of the Platform that is running
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*
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* @param {string} platform - An OS platform to match, or null to fallback to
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* the current process platform
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* @return {Object} The name of the platform if matched, false otherwise
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*
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* @api public
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*/
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function getHumanPlatform(platform) {
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switch (platform || process.platform) {
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case 'darwin': return 'OS X';
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case 'freebsd': return 'FreeBSD';
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case 'linux': return 'Linux';
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case 'linux_musl': return 'Linux/musl';
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case 'win32': return 'Windows';
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default: return false;
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}
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}
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/**
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* Provides a more readable version of the architecture
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*
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* @param {string} arch - An instruction architecture name to match, or null to
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* lookup the current process architecture
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* @return {Object} The value of the process architecture, or false if unknown
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*
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* @api public
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*/
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function getHumanArchitecture(arch) {
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switch (arch || process.arch) {
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case 'ia32': return '32-bit';
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case 'x86': return '32-bit';
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case 'x64': return '64-bit';
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default: return false;
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}
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}
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/**
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* Get the friendly name of the Node environment being run
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*
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* @param {Object} abi - A Node Application Binary Interface value, or null to
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* fallback to the current Node ABI
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* @return {Object} Returns a string name of the Node environment or false if
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* unmatched
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*
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* @api public
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*/
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function getHumanNodeVersion(abi) {
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switch (parseInt(abi || process.versions.modules, 10)) {
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case 11: return 'Node 0.10.x';
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case 14: return 'Node 0.12.x';
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case 42: return 'io.js 1.x';
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case 43: return 'io.js 1.1.x';
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case 44: return 'io.js 2.x';
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case 45: return 'io.js 3.x';
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case 46: return 'Node.js 4.x';
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case 47: return 'Node.js 5.x';
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case 48: return 'Node.js 6.x';
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case 49: return 'Electron 1.3.x';
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case 50: return 'Electron 1.4.x';
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case 51: return 'Node.js 7.x';
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case 53: return 'Electron 1.6.x';
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case 57: return 'Node.js 8.x';
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case 59: return 'Node.js 9.x';
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case 64: return 'Node.js 10.x';
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case 67: return 'Node.js 11.x';
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case 72: return 'Node.js 12.x';
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default: return false;
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}
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}
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/**
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* Get a human readable description of where node-sass is running to support
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* user error reporting when something goes wrong
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*
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* @param {string} env - The name of the native bindings that is to be parsed
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* @return {string} A description of what os, architecture, and Node version
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* that is being run
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*
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* @api public
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*/
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function getHumanEnvironment(env) {
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var binding = env.replace(/_binding\.node$/, ''),
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parts = binding.split('-'),
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platform = getHumanPlatform(parts[0]),
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arch = getHumanArchitecture(parts[1]),
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runtime = getHumanNodeVersion(parts[2]);
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if (parts.length !== 3) {
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return 'Unknown environment (' + binding + ')';
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}
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if (!platform) {
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platform = 'Unsupported platform (' + parts[0] + ')';
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}
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if (!arch) {
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arch = 'Unsupported architecture (' + parts[1] + ')';
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}
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if (!runtime) {
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runtime = 'Unsupported runtime (' + parts[2] + ')';
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}
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return [
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platform, arch, 'with', runtime,
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].join(' ');
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}
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/**
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* Get the value of the binaries under the default path
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*
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* @return {Array} The currently installed node-sass bindings
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*
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* @api public
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*/
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function getInstalledBinaries() {
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return fs.readdirSync(getBinaryDir());
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}
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/**
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* Check that an environment matches the whitelisted values or the current
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* environment if no parameters are passed
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*
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* @param {string} platform - The name of the OS platform(darwin, win32, etc...)
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* @param {string} arch - The instruction set architecture of the Node environment
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* @param {string} abi - The Node Application Binary Interface
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* @return {Boolean} True, if node-sass supports the current platform, false otherwise
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*
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* @api public
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*/
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function isSupportedEnvironment(platform, arch, abi) {
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return (
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false !== getHumanPlatform(platform) &&
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false !== getHumanArchitecture(arch) &&
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false !== getHumanNodeVersion(abi)
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);
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}
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/**
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* Get the value of a CLI argument
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*
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* @param {String} name
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* @param {Array} args
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* @api private
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*/
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function getArgument(name, args) {
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var flags = args || process.argv.slice(2),
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index = flags.lastIndexOf(name);
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if (index === -1 || index + 1 >= flags.length) {
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return null;
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}
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return flags[index + 1];
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}
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/**
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* Get binary name.
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* If environment variable SASS_BINARY_NAME,
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* .npmrc variable sass_binary_name or
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* process argument --binary-name is provided,
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* return it as is, otherwise make default binary
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* name: {platform}-{arch}-{v8 version}.node
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*
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* @api public
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*/
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function getBinaryName() {
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var binaryName,
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variant,
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platform = process.platform;
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if (getArgument('--sass-binary-name')) {
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binaryName = getArgument('--sass-binary-name');
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} else if (process.env.SASS_BINARY_NAME) {
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binaryName = process.env.SASS_BINARY_NAME;
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} else if (process.env.npm_config_sass_binary_name) {
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binaryName = process.env.npm_config_sass_binary_name;
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} else if (pkg.nodeSassConfig && pkg.nodeSassConfig.binaryName) {
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binaryName = pkg.nodeSassConfig.binaryName;
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} else {
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variant = getPlatformVariant();
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if (variant) {
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platform += '_' + variant;
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}
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binaryName = [
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platform, '-',
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process.arch, '-',
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process.versions.modules
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].join('');
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}
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return [binaryName, 'binding.node'].join('_');
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}
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/**
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* Determine the URL to fetch binary file from.
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* By default fetch from the node-sass distribution
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* site on GitHub.
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*
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* The default URL can be overriden using
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* the environment variable SASS_BINARY_SITE,
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* .npmrc variable sass_binary_site or
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* or a command line option --sass-binary-site:
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*
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* node scripts/install.js --sass-binary-site http://example.com/
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*
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* The URL should to the mirror of the repository
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* laid out as follows:
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*
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* SASS_BINARY_SITE/
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*
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* v3.0.0
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* v3.0.0/freebsd-x64-14_binding.node
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* ....
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* v3.0.0
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* v3.0.0/freebsd-ia32-11_binding.node
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* v3.0.0/freebsd-x64-42_binding.node
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* ... etc. for all supported versions and platforms
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*
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* @api public
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*/
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function getBinaryUrl() {
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var site = getArgument('--sass-binary-site') ||
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process.env.SASS_BINARY_SITE ||
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process.env.npm_config_sass_binary_site ||
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(pkg.nodeSassConfig && pkg.nodeSassConfig.binarySite) ||
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'https://github.com/sass/node-sass/releases/download';
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return [site, 'v' + pkg.version, getBinaryName()].join('/');
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}
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/**
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* Get binary dir.
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* If environment variable SASS_BINARY_DIR,
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* .npmrc variable sass_binary_dir or
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* process argument --sass-binary-dir is provided,
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* select it by appending binary name, otherwise
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* use default binary dir.
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* Once the primary selection is made, check if
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* callers wants to throw if file not exists before
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* returning.
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*
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* @api public
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*/
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function getBinaryDir() {
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var binaryDir;
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if (getArgument('--sass-binary-dir')) {
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binaryDir = getArgument('--sass-binary-dir');
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} else if (process.env.SASS_BINARY_DIR) {
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binaryDir = process.env.SASS_BINARY_DIR;
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} else if (process.env.npm_config_sass_binary_dir) {
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binaryDir = process.env.npm_config_sass_binary_dir;
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} else if (pkg.nodeSassConfig && pkg.nodeSassConfig.binaryDir) {
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binaryDir = pkg.nodeSassConfig.binaryDir;
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} else {
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binaryDir = defaultBinaryDir;
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}
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return binaryDir;
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}
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/**
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* Get binary path.
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* If environment variable SASS_BINARY_PATH,
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* .npmrc variable sass_binary_path or
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* process argument --sass-binary-path is provided,
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* select it by appending binary name, otherwise
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* make default binary path using binary name.
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* Once the primary selection is made, check if
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* callers wants to throw if file not exists before
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* returning.
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*
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* @api public
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*/
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function getBinaryPath() {
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var binaryPath;
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if (getArgument('--sass-binary-path')) {
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binaryPath = getArgument('--sass-binary-path');
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} else if (process.env.SASS_BINARY_PATH) {
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binaryPath = process.env.SASS_BINARY_PATH;
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} else if (process.env.npm_config_sass_binary_path) {
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binaryPath = process.env.npm_config_sass_binary_path;
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} else if (pkg.nodeSassConfig && pkg.nodeSassConfig.binaryPath) {
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binaryPath = pkg.nodeSassConfig.binaryPath;
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} else {
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binaryPath = path.join(getBinaryDir(), getBinaryName().replace(/_(?=binding\.node)/, '/'));
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}
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if (process.versions.modules < 46) {
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return binaryPath;
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}
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try {
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return trueCasePathSync(binaryPath) || binaryPath;
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} catch (e) {
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return binaryPath;
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}
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}
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/**
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* An array of paths suitable for use as a local disk cache of the binding.
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*
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* @return {[]String} an array of paths
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* @api public
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*/
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function getCachePathCandidates() {
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return [
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process.env.npm_config_sass_binary_cache,
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process.env.npm_config_cache,
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].filter(function(_) { return _; });
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}
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/**
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* The most suitable location for caching the binding on disk.
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*
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* Given the candidates directories provided by `getCachePathCandidates()` this
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* returns the first writable directory. By treating the candidate directories
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* as a prioritised list this method is deterministic, assuming no change to the
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* local environment.
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*
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* @return {String} directory to cache binding
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* @api public
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*/
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function getBinaryCachePath() {
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var i,
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cachePath,
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cachePathCandidates = getCachePathCandidates();
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for (i = 0; i < cachePathCandidates.length; i++) {
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cachePath = path.join(cachePathCandidates[i], pkg.name, pkg.version);
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try {
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mkdir.sync(cachePath);
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return cachePath;
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} catch (e) {
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// Directory is not writable, try another
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}
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}
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return '';
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}
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/**
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* The cached binding
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*
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* Check the candidates directories provided by `getCachePathCandidates()` for
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* the binding file, if it exists. By treating the candidate directories
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* as a prioritised list this method is deterministic, assuming no change to the
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* local environment.
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*
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* @return {String} path to cached binary
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* @api public
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*/
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function getCachedBinary() {
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var i,
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cachePath,
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cacheBinary,
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cachePathCandidates = getCachePathCandidates(),
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binaryName = getBinaryName();
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for (i = 0; i < cachePathCandidates.length; i++) {
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cachePath = path.join(cachePathCandidates[i], pkg.name, pkg.version);
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cacheBinary = path.join(cachePath, binaryName);
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if (fs.existsSync(cacheBinary)) {
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return cacheBinary;
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}
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}
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return '';
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}
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/**
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* Does the supplied binary path exist
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*
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* @param {String} binaryPath
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* @api public
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*/
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function hasBinary(binaryPath) {
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return fs.existsSync(binaryPath);
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}
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/**
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* Get Sass version information
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*
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* @api public
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*/
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function getVersionInfo(binding) {
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return [
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['node-sass', pkg.version, '(Wrapper)', '[JavaScript]'].join('\t'),
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['libsass ', binding.libsassVersion(), '(Sass Compiler)', '[C/C++]'].join('\t'),
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].join(eol);
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}
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/**
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* Gets the platform variant, currently either an empty string or 'musl' for Linux/musl platforms.
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*
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* @api public
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*/
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function getPlatformVariant() {
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var contents = '';
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if (process.platform !== 'linux') {
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return '';
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}
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try {
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contents = fs.readFileSync(process.execPath);
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// Buffer.indexOf was added in v1.5.0 so cast to string for old node
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// Delay contents.toStrings because it's expensive
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if (!contents.indexOf) {
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contents = contents.toString();
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}
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if (contents.indexOf('libc.musl-x86_64.so.1') !== -1) {
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return 'musl';
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}
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} catch (err) { } // eslint-disable-line no-empty
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return '';
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}
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module.exports.hasBinary = hasBinary;
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module.exports.getBinaryUrl = getBinaryUrl;
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module.exports.getBinaryName = getBinaryName;
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module.exports.getBinaryDir = getBinaryDir;
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module.exports.getBinaryPath = getBinaryPath;
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module.exports.getBinaryCachePath = getBinaryCachePath;
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module.exports.getCachedBinary = getCachedBinary;
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module.exports.getCachePathCandidates = getCachePathCandidates;
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module.exports.getVersionInfo = getVersionInfo;
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module.exports.getHumanEnvironment = getHumanEnvironment;
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module.exports.getInstalledBinaries = getInstalledBinaries;
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module.exports.isSupportedEnvironment = isSupportedEnvironment;
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