fasttext-native
Version:
fastText bindings for Node.js
198 lines (175 loc) • 7.38 kB
JavaScript
;
module.exports = exports = install;
exports.usage = 'Attempts to install pre-built binary for module';
var fs = require('fs');
var path = require('path');
var zlib = require('zlib');
var log = require('npmlog');
var existsAsync = fs.exists || path.exists;
var versioning = require('./util/versioning.js');
var npgVersion = 'unknown';
try {
// Read own package.json to get the current node-pre-pyp version.
var ownPackageJSON = fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf8');
npgVersion = JSON.parse(ownPackageJSON).version;
} catch (e) {}
function download(uri,opts,callback) {
log.http('GET', uri);
var req = null;
// Try getting version info from the currently running npm.
var envVersionInfo = process.env.npm_config_user_agent ||
'node ' + process.version;
var requestOpts = {
uri: uri.replace('+','%2B'),
headers: {
'User-Agent': 'node-pre-gyp (v' + npgVersion + ', ' + envVersionInfo + ')'
}
};
if (opts.cafile) {
try {
requestOpts.ca = fs.readFileSync(opts.cafile);
} catch (e) {
return callback(e);
}
} else if (opts.ca) {
requestOpts.ca = opts.ca;
}
var proxyUrl = opts.proxy ||
process.env.http_proxy ||
process.env.HTTP_PROXY ||
process.env.npm_config_proxy;
if (proxyUrl) {
if (/^https?:\/\//i.test(proxyUrl)) {
log.verbose('download', 'using proxy url: "%s"', proxyUrl);
requestOpts.proxy = proxyUrl;
} else {
log.warn('download', 'ignoring invalid "proxy" config setting: "%s"', proxyUrl);
}
}
try {
req = require('request')(requestOpts);
} catch (e) {
return callback(e);
}
if (req) {
req.on('response', function (res) {
log.http(res.statusCode, uri);
});
}
return callback(null,req);
}
function place_binary(from,to,opts,callback) {
download(from,opts,function(err,req) {
if (err) return callback(err);
if (!req) return callback(new Error("empty req"));
var badDownload = false;
var extractCount = 0;
var gunzip = zlib.createGunzip();
var extracter = require('tar').Extract({ path: to, strip: 1});
function afterTarball(err) {
if (err) return callback(err);
if (badDownload) return callback(new Error("bad download"));
if (extractCount === 0) {
return callback(new Error('There was a fatal problem while downloading/extracting the tarball'));
}
log.info('tarball', 'done parsing tarball');
callback();
}
function filter_func(entry) {
// ensure directories are +x
// https://github.com/mapnik/node-mapnik/issues/262
entry.props.mode |= (entry.props.mode >>> 2) & parseInt('0111',8);
log.info('install','unpacking ' + entry.path);
extractCount++;
}
gunzip.on('error', callback);
extracter.on('entry', filter_func);
extracter.on('error', callback);
extracter.on('end', afterTarball);
req.on('error', function(err) {
badDownload = true;
return callback(err);
});
req.on('close', function () {
if (extractCount === 0) {
return callback(new Error('Connection closed while downloading tarball file'));
}
});
req.on('response', function(res) {
if (res.statusCode !== 200) {
badDownload = true;
var err = new Error(res.statusCode + ' status code downloading tarball ' + from);
err.statusCode = res.statusCode;
return callback(err);
}
// start unzipping and untaring
req.pipe(gunzip).pipe(extracter);
});
});
}
function do_build(gyp,argv,callback) {
gyp.todo.push( { name: 'build', args: ['rebuild'] } );
process.nextTick(callback);
}
function print_fallback_error(err,opts,package_json) {
var fallback_message = ' (falling back to source compile with node-gyp)';
var full_message = "Pre-built binaries not found for " + package_json.name + "@" + package_json.version;
full_message += " and " + opts.runtime + "@" + (opts.target || process.versions.node) + " (" + opts.node_abi + " ABI, " + opts.libc + ")";
full_message += fallback_message;
log.error("Tried to download(" + err.statusCode + "): " + opts.hosted_tarball);
log.error(full_message);
log.http(err.message);
}
function install(gyp, argv, callback) {
var package_json = JSON.parse(fs.readFileSync('./package.json'));
var source_build = gyp.opts['build-from-source'] || gyp.opts.build_from_source;
var update_binary = gyp.opts['update-binary'] || gyp.opts.update_binary;
var should_do_source_build = source_build === package_json.name || (source_build === true || source_build === 'true');
if (should_do_source_build) {
log.info('build','requesting source compile');
return do_build(gyp,argv,callback);
} else {
var fallback_to_build = gyp.opts['fallback-to-build'] || gyp.opts.fallback_to_build;
var should_do_fallback_build = fallback_to_build === package_json.name || (fallback_to_build === true || fallback_to_build === 'true');
// but allow override from npm
if (process.env.npm_config_argv) {
var cooked = JSON.parse(process.env.npm_config_argv).cooked;
var match = cooked.indexOf("--fallback-to-build");
if (match > -1 && cooked.length > match && cooked[match+1] == "false") {
should_do_fallback_build = false;
log.info('install','Build fallback disabled via npm flag: --fallback-to-build=false');
}
}
var opts;
try {
opts = versioning.evaluate(package_json, gyp.opts);
} catch (err) {
return callback(err);
}
opts.ca = gyp.opts.ca;
opts.cafile = gyp.opts.cafile;
var from = opts.hosted_tarball;
var to = opts.module_path;
var binary_module = path.join(to,opts.module_name + '.node');
if (existsAsync(binary_module,function(found) {
if (found && !update_binary) {
console.log('['+package_json.name+'] Success: "' + binary_module + '" already installed');
console.log('Pass --update-binary to reinstall or --build-from-source to recompile');
return callback();
} else {
if (!update_binary) log.info('check','checked for "' + binary_module + '" (not found)');
place_binary(from,to,opts,function(err) {
if (err && should_do_fallback_build) {
print_fallback_error(err,opts,package_json);
return do_build(gyp,argv,callback);
} else if (err) {
return callback(err);
} else {
console.log('['+package_json.name+'] Success: "' + binary_module + '" is installed via remote');
return callback();
}
});
}
}));
}
}