bsn2url.md

layout	title	summary
default	bsn2url	From a set of bsns, create a list of urls if found in the repo

Description

{{page.summary}}

Synopsis

Options

Examples

/**
 * From a set of bsns, create a list of urls
 */

interface Bsn2UrlOptions extends projectOptions {

}

static Pattern	LINE_P	= Pattern.compile("\\s*(([^\\s]#|[^#])+)(\\s*#.*)?");

public void _bsn2url(Bsn2UrlOptions opts) throws Exception {
	Project p = getProject(opts.project());

	if (p == null) {
		error("You need to be in a project or specify the project with -p/--project");
		return;
	}

	MultiMap<String,Version> revisions = new MultiMap<String,Version>();

	for (RepositoryPlugin repo : p.getPlugins(RepositoryPlugin.class)) {
		if (!(repo instanceof InfoRepository))
			continue;

		for (String bsn : repo.list(null)) {
			revisions.addAll(bsn, repo.versions(bsn));
		}
	}

	for (List<Version> versions : revisions.values()) {
		Collections.sort(versions, Collections.reverseOrder());
	}

	List<String> files = opts._();

	for (String f : files) {
		BufferedReader r = IO.reader(getFile(f));
		try {
			String line;
			nextLine: while ((line = r.readLine()) != null) {
				Matcher matcher = LINE_P.matcher(line);
				if (!matcher.matches())
					continue nextLine;

				line = matcher.group(1);

				Parameters bundles = new Parameters(line);
				for (Map.Entry<String,Attrs> entry : bundles.entrySet()) {

					String bsn = entry.getKey();
					VersionRange range = new VersionRange(entry.getValue().getVersion());

					List<Version> versions = revisions.get(bsn);
					if (versions == null) {
						error("No for versions for " + bsn);
						break nextLine;
					}

					for (Version version : versions) {
						if (range.includes(version)) {

							for (RepositoryPlugin repo : p.getPlugins(RepositoryPlugin.class)) {

								if (!(repo instanceof InfoRepository))
									continue;

								InfoRepository rp = (InfoRepository) repo;
								ResourceDescriptor descriptor = rp.getDescriptor(bsn, version);
								if (descriptor == null) {
									error("Found bundle, but no descriptor %s;version=%s", bsn, version);
									return;
								}

								out.println(descriptor.url + " #" + descriptor.bsn + ";version="
										+ descriptor.version);
							}
						}
					}

				}

			}
		}
		catch (Exception e) {
			error("failed to create url list from file %s : %s", f, e);
		}
		finally {
			r.close();
		}
	}
}