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var npmi = require('npmi');
var pkg = require('../../package.json');
var DEFAULT_PLUGINS = require('../constants/defaultPlugins');
var Promise = require('../utils/promise');
var resolveVersion = require('./resolveVersion');
/**
Install a plugin for a book
@param {Book}
@param {PluginDependency}
@return {Promise}
*/
function installPlugin(book, plugin) {
var logger = book.getLogger();
var installFolder = book.getRoot();
var name = plugin.getName();
var requirement = plugin.getVersion();
logger.info.ln('');
logger.info.ln('installing plugin "' + name + '"');
// Find a version to install
return resolveVersion(plugin)
.then(function(version) {
if (!version) {
throw new Error('Found no satisfactory version for plugin "' + name + '" with requirement "' + requirement + '"');
}
logger.info.ln('install plugin "' + name +'" (' + requirement + ') from NPM with version', version);
return Promise.nfcall(npmi, {
'name': plugin.getNpmID(),
'version': version,
'path': installFolder,
'npmLoad': {
'loglevel': 'silent',
'loaded': true,
'prefix': installFolder
}
});
})
.then(function() {
logger.info.ok('plugin "' + name + '" installed with success');
});
}
/**
Install plugin requirements for a book
@param {Book}
@return {Promise<Number>}
*/
function installPlugins(book) {
var logger = book.getLogger();
var config = book.getConfig();
var plugins = config.getPluginDependencies();
// Remove default plugins
// (only if version is same as installed)
plugins = plugins.filterNot(function(plugin) {
return (
// Disabled plugin
!plugin.isEnabled() ||
// Or default one installed in GitBook itself
(DEFAULT_PLUGINS.includes(plugin.getName()) &&
plugin.getVersion() === pkg.dependencies[plugin.getNpmID()])
);
});
if (plugins.size == 0) {
logger.info.ln('nothing to install!');
return Promise();
}
logger.info.ln('installing', plugins.size, 'plugins using npm@' + npmi.NPM_VERSION);
return Promise.forEach(plugins, function(plugin) {
return installPlugin(book, plugin);
})
.thenResolve(plugins.size);
}
module.exports = installPlugins;
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