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var _ = require("lodash");
var Q = require("q");
var semver = require("semver");
var fs = require("./fs");
var pkg = require("../../package.json");
var Plugin = function(name) {
this.name = name;
this.packageInfos = {};
this.infos = {};
_.each([
name,
"gitbook-plugin-"+name,
"gitbook-theme-"+name
], function(_name) {
if (this.load(_name)) return false;
}.bind(this));
};
// Load from a name
Plugin.prototype.load = function(name) {
try {
this.packageInfos = require(name+"/package.json");
this.infos = require(name);
this.name = name;
return true;
} catch (e) {
return false;
}
};
// Return resources
Plugin.prototype.getResources = function(resource) {
if (!this.infos.book || !this.infos.book[resource]) {
return [];
}
return this.infos.book[resource];
};
// Test if it's a valid plugin
Plugin.prototype.isValid = function() {
return (
this.packageInfos
&& this.packageInfos.name
&& this.packageInfos.engines
&& this.packageInfos.engines.gitbook
&& semver.satisfies(pkg.version, this.packageInfos.engines.gitbook)
);
};
// Extract data from a list of plugin
Plugin.fromList = function(names) {
var failed = [];
// Load plugins
var plugins = _.map(names, function(name) {
var plugin = new Plugin(name);
if (!plugin.isValid()) failed.push(name);
return plugin;
});
if (_.size(failed) > 0) return Q.reject(new Error("Error loading plugins: "+failed.join(":")));
// Get all resources
var resources = _.chain([
"js", "css"
])
.map(function(resource) {
return [
resource,
_.chain(plugins)
.map(function(plugin) {
return plugin.getResources(resource);
})
.flatten()
.value()
];
})
.object()
.value();
return Q({
'plugins': plugins,
'resources': resources
});
};
// Normalize a list of plugin name to use
Plugin.normalizeNames = function(names) {
// Normalize list to an array
names = _.isString(names) ? names.split(":") : (names || []);
// List plugins to remove
var toremove = _.chain(names)
.filter(function(name) {
return name.length > 0 && name[0] == "-";
})
.map(function(name) {
return name.slice(1)
})
.value();
// Merge with defaults
names = _.chain(names)
.concat(Plugin.defaults)
.uniq()
.value();
// Remove plugins starting with
names = _.filter(names, function(name) {
return !_.contains(toremove, name) && !(name.length > 0 && name[0] == "-");
});
return names;
};
// Default plugins
Plugin.defaults = [
"mixpanel"
];
module.exports = Plugin;
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