IDEA-108213: ZipException on attempt to extract non-existent jar when building artifact

jps/jps-builders/src/org/jetbrains/jps/incremental/artifacts/instructions/JarBasedArtifactRootDescriptor.java

@@ -50,6 +50,8 @@ public class JarBasedArtifactRootDescriptor extends ArtifactRootDescriptor {
   }
 
   public void processEntries(EntryProcessor processor) throws IOException {
+    if (!myRoot.isFile()) return;
+
     String prefix = StringUtil.trimStart(myPathInJar, "/");
     if (!StringUtil.endsWithChar(prefix, '/')) prefix += "/";
     if (prefix.equals("/")) {

jps/jps-builders/testSrc/org/jetbrains/jps/incremental/artifacts/ArtifactBuilderTest.java

@@ -405,6 +405,18 @@ public class ArtifactBuilderTest extends ArtifactBuilderTestCase {
     assertEmptyOutput(a);
   }
 
+  public void testExtractNonExistentJarFile() {
+    JpsArtifact a = addArtifact(root().extractedDir("this-file-does-not-exist.jar", "/"));
+    buildAll();
+    assertEmptyOutput(a);
+  }
+
+  public void testRepackNonExistentJarFile() {
+    JpsArtifact a = addArtifact(archive("a.jar").extractedDir("this-file-does-not-exist.jar", "/").fileCopy(createFile("a.txt")));
+    buildAll();
+    assertOutput(a, fs().archive("a.jar").file("a.txt"));
+  }
+
   private static void createFileInArtifactOutput(JpsArtifact a, final String fileName) throws IOException {
     assertTrue(new File(a.getOutputPath(), fileName).createNewFile());
   }