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var _ = require('lodash');
var Q = require('q');
var path = require('path');
var semver = require('semver');
var pkg = require('../package.json');
var i18n = require('./utils/i18n');
var version = require('./version');
var DEFAULT_CONFIG = require('./config_default');
// Default plugins added to each books
var DEFAULT_PLUGINS = ['highlight', 'search', 'sharing', 'fontsettings'];
// Check if a plugin is a default plugin
// Plugin should be in the list
// And version from book.json specified for this plugin should be satisfied
function isDefaultPlugin(name, version) {
if (!_.contains(DEFAULT_PLUGINS, name)) return false;
try {
var pluginPkg = require('gitbook-plugin-'+name+'/package.json');
return semver.satisfies(pluginPkg.version, version || '*');
} catch(e) {
return false;
}
}
// Normalize a list of plugins to use
function normalizePluginsList(plugins, addDefaults) {
// Normalize list to an array
plugins = _.isString(plugins) ? plugins.split(',') : (plugins || []);
// Remove empty parts
plugins = _.compact(plugins);
// Divide as {name, version} to handle format like 'myplugin@1.0.0'
plugins = _.map(plugins, function(plugin) {
if (plugin.name) return plugin;
var parts = plugin.split('@');
var name = parts[0];
var version = parts[1];
return {
'name': name,
'version': version, // optional
'isDefault': isDefaultPlugin(name, version)
};
});
// List plugins to remove
var toremove = _.chain(plugins)
.filter(function(plugin) {
return plugin.name.length > 0 && plugin.name[0] == '-';
})
.map(function(plugin) {
return plugin.name.slice(1);
})
.value();
// Merge with defaults
if (addDefaults !== false) {
_.each(DEFAULT_PLUGINS, function(plugin) {
if (_.find(plugins, { name: plugin })) {
return;
}
plugins.push({
'name': plugin,
'isDefault': true
});
});
}
// Remove plugin that start with '-'
plugins = _.filter(plugins, function(plugin) {
return !_.contains(toremove, plugin.name) && !(plugin.name.length > 0 && plugin.name[0] == '-');
});
// Remove duplicates
plugins = _.uniq(plugins, 'name');
return plugins;
}
var Configuration = function(book, options) {
this.book = book;
this.replace(options);
};
// Read and parse the configuration
Configuration.prototype.load = function() {
var that = this;
return Q()
.then(function() {
var configPath, _config;
try {
configPath = require.resolve(
that.book.resolve(that.options.configFile)
);
// Invalidate node.js cache for livreloading
delete require.cache[configPath];
_config = require(configPath);
that.options = _.merge(
that.options,
_.omit(_config, 'configFile', 'defaultsPlugins', 'generator', 'extension')
);
}
catch(err) {
if (err instanceof SyntaxError) return Q.reject(err);
return Q();
}
})
.then(function() {
if (!that.book.isSubBook()) {
if (!version.satisfies(that.options.gitbook)) {
throw new Error('GitBook version doesn\'t satisfy version required by the book: '+that.options.gitbook);
}
if (that.options.gitbook != '*' && !semver.satisfies(semver.inc(pkg.version, 'patch'), that.options.gitbook)) {
that.book.log.warn.ln('gitbook version specified in your book.json might be too strict for future patches, \''+(_.first(pkg.version.split('.'))+'.x.x')+'\' is more adequate');
}
}
that.options.output = path.resolve(that.options.output || that.book.resolve('_book'));
that.options.plugins = normalizePluginsList(that.options.plugins);
that.options.defaultsPlugins = normalizePluginsList(that.options.defaultsPlugins || '', false);
that.options.plugins = _.union(that.options.plugins, that.options.defaultsPlugins);
that.options.plugins = _.uniq(that.options.plugins, 'name');
// Default value for text direction (from language)
if (!that.options.direction) {
var lang = i18n.getCatalog(that.options.language);
if (lang) that.options.direction = lang.direction;
}
that.options.gitbook = pkg.version;
});
};
// Extend the configuration
Configuration.prototype.extend = function(options) {
_.extend(this.options, options);
};
// Replace the whole configuration
Configuration.prototype.replace = function(options) {
var that = this;
this.options = _.cloneDeep(DEFAULT_CONFIG);
this.options = _.merge(this.options, options || {});
// options.input == book.root
Object.defineProperty(this.options, 'input', {
get: function () {
return that.book.root;
}
});
// options.originalInput == book.parent.root
Object.defineProperty(this.options, 'originalInput', {
get: function () {
return that.book.parent? that.book.parent.root : undefined;
}
});
// options.originalOutput == book.parent.options.output
Object.defineProperty(this.options, 'originalOutput', {
get: function () {
return that.book.parent? that.book.parent.options.output : undefined;
}
});
};
// Dump configuration as json object
Configuration.prototype.dump = function() {
return _.cloneDeep(this.options);
};
// Get structure file
Configuration.prototype.getStructure = function(name, dontStripExt) {
var filename = this.options.structure[name];
if (dontStripExt) return filename;
filename = filename.split('.').slice(0, -1).join('.');
return filename;
};
// Return normalized language
Configuration.prototype.normalizeLanguage = function() {
return i18n.normalizeLanguage(this.options.language);
};
// Return a configuration
Configuration.prototype.get = function(key, def) {
return _.get(this.options, key, def);
};
// Update a configuration
Configuration.prototype.set = function(key, value) {
return _.set(this.options, key, value);
};
// Default configuration
Configuration.DEFAULT = DEFAULT_CONFIG;
module.exports= Configuration;
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