Add factory methods to construct an IPath from io.File/nio.Path

bundles/org.eclipse.equinox.common.tests/src/org/eclipse/equinox/common/tests/PathTest.java

@@ -16,6 +16,7 @@
 
 import static org.junit.Assert.assertNotEquals;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -403,6 +404,34 @@ public void testFromPortableString() {
 		assertEquals("3.12.posix", isLocalPosix, posix2.isValidSegment(":"));
 	}
 
+	public void testFromFile() {
+		List<String> segments = List.of("first", "first/second/third");
+		for (String segment : segments) {
+			File file0 = new File(segment);
+			assertEquals(file0, IPath.fromFile(file0).toFile());
+			File file1 = new File(segment + "/");
+			assertEquals(file1, IPath.fromFile(file1).toFile());
+			File file2 = new File("/" + segment);
+			assertEquals(file2, IPath.fromFile(file2).toFile());
+			File file3 = new File("/" + segment + "/");
+			assertEquals(file3, IPath.fromFile(file3).toFile());
+		}
+	}
+
+	public void testFromPath() {
+		List<String> segments = List.of("first", "first/second/third");
+		for (String segment : segments) {
+			java.nio.file.Path path0 = java.nio.file.Path.of(segment);
+			assertEquals(path0, IPath.fromPath(path0).toPath());
+			java.nio.file.Path path1 = java.nio.file.Path.of(segment + "/");
+			assertEquals(path1, IPath.fromPath(path1).toPath());
+			java.nio.file.Path path2 = java.nio.file.Path.of("/" + segment);
+			assertEquals(path2, IPath.fromPath(path2).toPath());
+			java.nio.file.Path path3 = java.nio.file.Path.of("/" + segment + "/");
+			assertEquals(path3, IPath.fromPath(path3).toPath());
+		}
+	}
+
 	public void testGetFileExtension() {
 
 		IPath anyPath = new Path("index.html");

bundles/org.eclipse.equinox.common/src/org/eclipse/core/runtime/IPath.java

@@ -11,7 +11,7 @@
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *     Patrick Tasse - Add extra constructor to Path class (bug 454959)
- *     Hannes Wellmann - Add static IPath factory methods
+ *     Hannes Wellmann - Add static IPath factory methods and add methods to create an IPath from a io.File/nio.Path
  *******************************************************************************/
 package org.eclipse.core.runtime;
 
@@ -117,6 +117,28 @@ public static IPath forWindows(String windowsPath) {
 		return new Path(windowsPath, true);
 	}
 
+	/**
+	 * Constructs a new {@code IPath} from the given {@code File}.
+	 *
+	 * @param file the java.io.File object
+	 * @return the IPath representing the given File object
+	 * @since 3.18
+	 */
+	public static IPath fromFile(java.io.File file) {
+		return fromOSString(file.toString());
+	}
+
+	/**
+	 * Constructs a new {@code IPath} from the given {@code java.nio.file.Path}.
+	 *
+	 * @param path the java.nio.file.Path object
+	 * @return the IPath representing the given Path object
+	 * @since 3.18
+	 */
+	public static IPath fromPath(java.nio.file.Path path) {
+		return fromOSString(path.toString());
+	}
+
 	/**
 	 * Returns a new path which is the same as this path but with
 	 * the given file extension added.  If this path is empty, root or has a