2dda2e10
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var mout = require('mout');
var cmd = require('../util/cmd');
var Q = require('q');
var shellquote = require('shell-quote');
var orderByDependencies = function (packages, installed, json) {
var ordered = [];
installed = mout.object.keys(installed);
var depsSatisfied = function (packageName) {
return mout.array.difference(mout.object.keys(packages[packageName].dependencies), installed, ordered).length === 0;
};
var depsFromBowerJson = json && json.dependencies ? mout.object.keys(json.dependencies) : [];
var packageNames = mout.object.keys(packages);
//get the list of the packages that are specified in bower.json in that order
//its nice to maintain that order for users
var desiredOrder = mout.array.intersection(depsFromBowerJson, packageNames);
//then add to the end any remaining packages that werent in bower.json
desiredOrder = desiredOrder.concat(mout.array.difference(packageNames, desiredOrder));
//the desired order isn't necessarily a correct dependency specific order
//so we ensure that below
var resolvedOne = true;
while (resolvedOne) {
resolvedOne = false;
for (var i = 0; i < desiredOrder.length; i++) {
var packageName = desiredOrder[i];
if (depsSatisfied(packageName)) {
ordered.push(packageName);
mout.array.remove(desiredOrder, packageName);
//as soon as we resolve a package start the loop again
resolvedOne = true;
break;
}
}
if (!resolvedOne && desiredOrder.length > 0) {
//if we're here then some package(s) doesn't have all its deps satisified
//so lets just jam those names on the end
ordered = ordered.concat(desiredOrder);
}
}
return ordered;
};
var run = function (cmdString, action, logger, config) {
logger.action(action, cmdString);
//pass env + BOWER_PID so callees can identify a preinstall+postinstall from the same bower instance
var env = mout.object.mixIn({ 'BOWER_PID': process.pid }, process.env);
var args = shellquote.parse(cmdString, env);
var cmdName = args[0];
mout.array.remove(args, cmdName); //no rest() in mout
var options = {
cwd: config.cwd,
env: env
};
var promise = cmd(cmdName, args, options);
promise.progress(function (progress) {
progress.split('\n').forEach(function (line) {
if (line) {
logger.action(action, line);
}
});
});
return promise;
};
var hook = function (action, ordered, config, logger, packages, installed, json) {
if (mout.object.keys(packages).length === 0 || !config.scripts || !config.scripts[action]) {
return Q();
}
var orderedPackages = ordered ? orderByDependencies(packages, installed, json) : mout.object.keys(packages);
var placeholder = new RegExp('%', 'g');
var cmdString = mout.string.replace(config.scripts[action], placeholder, orderedPackages.join(' '));
return run(cmdString, action, logger, config);
};
module.exports = {
preuninstall: mout.function.partial(hook, 'preuninstall', false),
preinstall: mout.function.partial(hook, 'preinstall', true),
postinstall: mout.function.partial(hook, 'postinstall', true),
//only exposed for test
_orderByDependencies: orderByDependencies
};
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