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var tusk = require("../tusk");
var util = require("util");
var args = require("args");
var fs = require("file");
var json = require("json");
var http = require("http");
var zip = require("zip");
var packages = require("packages");
var parser = exports.parser = new args.Parser();
parser.help('downloads and installs a package and its dependencies');
parser.action(function (options) {
exports.install.call(this, options, options.args);
});
exports.install = function (options, names) {
if (!tusk.getCatalogPath().isFile()) {
if (options.simulate) {
this.print("Run 'tusk update' or 'tusk create-catalog' to get a catalog.");
return;
}
tusk.update.call(this, options);
}
var parser = this;
var catalog = tusk.readCatalog();
// download a catalog if the current catalog
// does not have a version label.
if (!catalog.version) {
this.print("Run 'tusk update' or 'tusk create-catalog' to get a catalog.");
this.print("Your catalog version is no longer supported.");
return;
}
// validate the requested names against those
// in the catalog of downloadable packages.
var names = names.filter(function (name) {
if (!util.has(catalog.packages, name)) {
parser.print("ERROR: Package not found: " + util.enquote(name));
return false;
}
return true;
});
// load the notes on user-requested and dependency packages
// for book keeping.
var notes = tusk.readNotes();
names.forEach(function (name) {
if (!notes[name]) {
notes[name] = {};
}
notes[name].requester = "user";
});
tusk.writeNotes(notes);
// note broken dependency chains
var errors = [];
var dependencies = exports.dependencies(catalog.packages, names, errors);
if (errors.length) {
print('The following dependencies could not be found in the catalog:');
printUl(errors.map(function (ancestry) {
return ancestry.join(' <- ');
}));
print('Please notify the package system maintainers.');
this.exit();
}
// notify of packages already installed
var already = exports.already(packages.catalog, names);
if (already.length) {
print('The following packages are already installed:');
printUl(already);
}
// note missing packages
var missing = exports.missing(packages.catalog, dependencies);
if (!missing.length) {
print('No new packages to install.');
this.exit();
}
print('The following packages will be downloaded and installed:');
printUl(missing);
// download missing packages
var zipsDirectory = tusk.getZipsDirectory();
zipsDirectory.mkdirs();
missing.forEach(function (name) {
var info = catalog.packages[name];
print('Downloading: ' + info.location);
if (options.simulate)
return;
var zipFile = zipsDirectory.join(name + '.zip')
if (options.resume && zipFile.isFile())
return;
var targetPath = tusk.getDirectory().join('packages', name);
var zipData = http.read(info.location, 'b');
zipFile.write(zipData, 'b');
});
// install missing packages
missing.forEach(function (name) {
if (!notes[name])
notes[name] = {}
if (!notes[name].files)
notes[name].files = [];
if (!notes[name].requester)
notes[name].requester = "module";
try {
var zipFile = zipsDirectory.join(name + '.zip')
print('Unzipping: ' + zipFile);
if (options.simulate)
return;
var targetPath = tusk.getDirectory().join('packages', name);
// unzip
new zip.Unzip(zipFile).forEach(function (entry) {
if (entry.isDirectory())
return;
var parts = fs.split(entry.getName());
parts.shift(); // name-project-comment ref dirname
var path = targetPath.join(fs.join.apply(null, parts));
path.dirname().mkdirs();
notes[name].files.push(path);
print(path);
path.write(entry.read('b'), 'b');
});
// write package.json if it was not in the
// archive
var packageJson = targetPath.join('package.json');
if (!packageJson.isFile())
packageJson.write(
json.encode(catalog.packages[name], null, 4),
{'charset': 'UTF-8'}
);
// make bins executable and make symlinks
// in $SEA/bin
var bin = targetPath.join('bin');
if (bin.isDirectory())
bin.list().forEach(function (name) {
var target = targetPath.join('bin', name);
target.chmod(0755);
var sea = tusk.getDirectory().join('bin');
var source = sea.join(name);
var relative = sea.to(target);
if (!source.linkExists()) {
target.symlink(source);
}
});
notes[name].finished = true;
} catch (exception) {
var packageJsonPath = tusk.getDirectory().join('packages', name, 'package.json');
if (packageJsonPath.isFile())
packageJsonPath.remove();
throw exception;
} finally {
tusk.writeNotes(notes);
/*
if (zipFile.isFile())
zipFile.remove();
*/
}
});
print('Done.');
};
function printUl(lines) {
lines.forEach(function (line) {
print(' * ' + line);
});
};
exports.dependencies = function (catalog, names, errors) {
var dependencies = {};
names.forEach(function (name) {
scan(catalog, dependencies, name, [], errors);
});
return Object.keys(dependencies);
};
var scan = function (catalog, dependencies, name, ancestry, errors) {
if (util.has(dependencies, name))
return;
ancestry = [name].concat(ancestry);
if (!util.has(catalog, name)) {
errors.push(ancestry);
return;
}
dependencies[name] = true;
(catalog[name].dependencies || []).forEach(function (child) {
scan(catalog, dependencies, child, ancestry, errors);
});
};
exports.already = function (catalog, names) {
return names.filter(function (packageName) {
return util.has(catalog, packageName);
});
};
exports.missing = function (catalog, names) {
return names.filter(function (packageName) {
return !util.has(catalog, packageName);
});
};
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