JarUri Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/origin/JarUri.java lines 28–84

final class JarUri {

	private static final String JAR_SCHEME = "jar:";

	private static final String JAR_EXTENSION = ".jar";

	private final String uri;

	private final String description;

	private JarUri(String uri) {
		this.uri = uri;
		this.description = extractDescription(uri);
	}

	private String extractDescription(String uri) {
		uri = uri.substring(JAR_SCHEME.length());
		int firstDotJar = uri.indexOf(JAR_EXTENSION);
		String firstJar = getFilename(uri.substring(0, firstDotJar + JAR_EXTENSION.length()));
		uri = uri.substring(firstDotJar + JAR_EXTENSION.length());
		int lastDotJar = uri.lastIndexOf(JAR_EXTENSION);
		if (lastDotJar == -1) {
			return firstJar;
		}
		return firstJar + uri.substring(0, lastDotJar + JAR_EXTENSION.length());
	}

	private String getFilename(String string) {
		int lastSlash = string.lastIndexOf('/');
		return (lastSlash == -1) ? string : string.substring(lastSlash + 1);
	}

	String getDescription() {
		return this.description;
	}

	String getDescription(String existing) {
		return existing + " from " + this.description;
	}

	@Override
	public String toString() {
		return this.uri;
	}

	static @Nullable JarUri from(URI uri) {
		return from(uri.toString());
	}

	static @Nullable JarUri from(String uri) {
		if (uri.startsWith(JAR_SCHEME) && uri.contains(JAR_EXTENSION)) {
			return new JarUri(uri);
		}
		return null;
	}

}