feat/wip: add N5URI.from String

src/main/java/org/janelia/saalfeldlab/n5/N5URI.java

@@ -590,6 +590,44 @@ public static N5URI from(
 		return new N5URI(containerPart + groupPart + attributePart);
 	}
 
+	/**
+	 * Generate an {@link N5URI} from a String.
+	 *
+	 * @param uriOrPath
+	 *            a string representation of a uri or a path string.
+	 * @return the {@link N5URI}
+	 */
+	public static N5URI from(final String uriOrPath) {
+
+		URI uri;
+		try {
+			uri = URI.create(uriOrPath);
+		} catch (Throwable ignore) {}
+
+		try {
+			final String[] split = uriOrPath.split("\\?");
+			final URI tmp = Paths.get(split[0]).toUri();
+			if (split.length == 1)
+				uri = tmp;
+			else {
+				StringBuffer buildUri = new StringBuffer();
+				buildUri.append(tmp.toString());
+				for (int i = 1; i < split.length; i++)
+					buildUri.append(split[i]);
+
+				uri = new URI(buildUri.toString());
+			}
+		} catch (Throwable ignore) {}
+
+		try {
+			uri = N5URI.encodeAsUri(uriOrPath);
+		} catch (URISyntaxException e) {
+			throw new N5Exception(e);
+		}
+
+		return new N5URI(uri);
+	}
+
 	/**
 	 * Intentionally copied from {@link URI} for internal use
 	 *

src/test/java/org/janelia/saalfeldlab/n5/N5URLTest.java

@@ -117,14 +117,17 @@ public void testGetRelative() throws URISyntaxException {
 	@Test
 	public void testContainerPath() throws URISyntaxException {
 
+		final String home = System.getProperty("user.home");
+		final String posixPath = "/a/b/c/d?e#f";
+		final String systemPath = home + "?e#f";
+
 		assertEquals(
 				"/a/b/c/d",
-				new N5URI("/a/b/c/d?e#f").getContainerPath());
+				N5URI.from(posixPath).getContainerPath());
 
-		final String home = System.getProperty("user.home");
 		assertEquals(
 				home,
-				new N5URI(home + "?e#f").getContainerPath());
+				N5URI.from(systemPath).getContainerPath());
 
 	}