/
resolverFactory.js
242 lines (194 loc) · 7.76 KB
/
resolverFactory.js
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var Q = require('q');
var fs = require('../util/fs');
var path = require('path');
var mout = require('mout');
var resolvers = require('./resolvers');
var createError = require('../util/createError');
var resolve = require('../util/resolve');
var pluginResolverFactory = require('./resolvers/pluginResolverFactory');
function createInstance(decEndpoint, options, registryClient) {
decEndpoint = mout.object.pick(decEndpoint, ['name', 'target', 'source']);
options.version = require('../version');
return getConstructor(decEndpoint, options, registryClient)
.spread(function (ConcreteResolver, decEndpoint) {
return new ConcreteResolver(decEndpoint, options.config, options.logger);
});
}
function getConstructor(decEndpoint, options, registryClient) {
var source = decEndpoint.source;
var config = options.config;
// Below we try a series of async tests to guess the type of resolver to use
// If a step was unable to guess the resolver, it returns undefined
// If a step can guess the resolver, it returns with constructor of resolver
var promise = Q.resolve();
var addResolver = function (resolverFactory) {
promise = promise.then(function (result) {
if (result === undefined) {
return resolverFactory(decEndpoint, options);
} else {
return result;
}
});
};
// Plugin resolvers.
//
// It requires each resolver defined in config.resolvers and calls
// its "match" to check if given resolves supports given decEndpoint
addResolver(function () {
var selectedResolver;
var resolverNames;
if (Array.isArray(config.resolvers)) {
resolverNames = config.resolvers;
} else if (!!config.resolvers) {
resolverNames = config.resolvers.split(',');
} else {
resolverNames = [];
}
var resolverPromises = resolverNames.map(function (resolverName) {
var resolver = resolvers[resolverName];
if (resolver === undefined) {
var resolverPath = resolve(resolverName, { cwd: config.cwd });
if (resolverPath === undefined) {
throw createError('Bower resolver not found: ' + resolverName, 'ENORESOLVER')
}
resolver = pluginResolverFactory(require(resolverPath), options);
}
return function () {
if (selectedResolver === undefined) {
var match = resolver.match.bind(resolver);
return Q.fcall(match, source).then(function (result) {
if (result) {
return selectedResolver = resolver;
}
});
} else {
return selectedResolver;
}
};
});
return resolverPromises.reduce(Q.when, new Q(undefined)).then(function (resolver) {
if (resolver) {
return Q.fcall(resolver.locate.bind(resolver), decEndpoint.source).then(function (result) {
if (result && result !== decEndpoint.source) {
decEndpoint.source = result;
decEndpoint.registry = true;
return getConstructor(decEndpoint, options, registryClient);
} else {
return [resolver, decEndpoint];
}
});
}
});
});
// Git case: git git+ssh, git+http, git+https
// .git at the end (probably ssh shorthand)
// git@ at the start
addResolver(function () {
if (/^git(\+(ssh|https?))?:\/\//i.test(source) || /\.git\/?$/i.test(source) || /^git@/i.test(source)) {
decEndpoint.source = source.replace(/^git\+/, '');
// If it's a GitHub repository, return the specialized resolver
if (resolvers.GitHub.getOrgRepoPair(source)) {
return [resolvers.GitHub, decEndpoint];
}
return [resolvers.GitRemote, decEndpoint];
}
});
// SVN case: svn, svn+ssh, svn+http, svn+https, svn+file
addResolver(function () {
if (/^svn(\+(ssh|https?|file))?:\/\//i.test(source)) {
return [resolvers.Svn, decEndpoint];
}
});
// URL case
addResolver(function () {
if (/^https?:\/\//i.exec(source)) {
return [resolvers.Url, decEndpoint];
}
});
// If source is ./ or ../ or an absolute path
addResolver(function () {
var absolutePath = path.resolve(config.cwd, source);
if (/^\.\.?[\/\\]/.test(source) || /^~\//.test(source) ||
path.normalize(source).replace(/[\/\\]+$/, '') === absolutePath
) {
return Q.nfcall(fs.stat, path.join(absolutePath, '.git'))
.then(function (stats) {
decEndpoint.source = absolutePath;
if (stats.isDirectory()) {
return Q.resolve([resolvers.GitFs, decEndpoint]);
}
throw new Error('Not a Git repository');
})
// If not, check if source is a valid Subversion repository
.fail(function () {
return Q.nfcall(fs.stat, path.join(absolutePath, '.svn'))
.then(function (stats) {
decEndpoint.source = absolutePath;
if (stats.isDirectory()) {
return Q.resolve([resolvers.Svn, decEndpoint]);
}
throw new Error('Not a Subversion repository');
});
})
// If not, check if source is a valid file/folder
.fail(function () {
return Q.nfcall(fs.stat, absolutePath)
.then(function () {
decEndpoint.source = absolutePath;
return Q.resolve([resolvers.Fs, decEndpoint]);
});
});
}
});
// Check if is a shorthand and expand it
addResolver(function () {
// Check if the shorthandResolver is falsy
if (!config.shorthandResolver) {
return;
}
// Skip ssh and/or URL with auth
if (/[:@]/.test(source)) {
return;
}
// Ensure exactly only one "/"
var parts = source.split('/');
if (parts.length === 2) {
decEndpoint.source = mout.string.interpolate(config.shorthandResolver, {
shorthand: source,
owner: parts[0],
package: parts[1]
});
return getConstructor(decEndpoint, options, registryClient);
}
});
// As last resort, we try the registry
addResolver(function () {
if (!registryClient) {
return;
}
return Q.nfcall(registryClient.lookup.bind(registryClient), source)
.then(function (entry) {
if (!entry) {
throw createError('Package ' + source + ' not found', 'ENOTFOUND');
}
decEndpoint.registry = true;
if (!decEndpoint.name) {
decEndpoint.name = decEndpoint.source;
}
decEndpoint.source = entry.url;
return getConstructor(decEndpoint, options);
});
});
addResolver(function () {
throw createError('Could not find appropriate resolver for ' + source, 'ENORESOLVER');
});
return promise;
}
function clearRuntimeCache() {
mout.object.values(resolvers).forEach(function (ConcreteResolver) {
ConcreteResolver.clearRuntimeCache();
});
}
module.exports = createInstance;
module.exports.getConstructor = getConstructor;
module.exports.clearRuntimeCache = clearRuntimeCache;