Forward port helidon-io#498

Fix MavenProjectSupplier to work properly on windows.
Project config 'project.resourcedirs' is split using ':', however that conflicts with windows drive notation.

Fixes helidon-io#357 helidon-io#483

dev-loop/dev-loop/src/main/java/io/helidon/build/devloop/maven/MavenProjectSupplier.java

@@ -16,6 +16,7 @@
 
 package io.helidon.build.devloop.maven;
 
+import java.io.File;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.attribute.FileTime;
@@ -78,6 +79,9 @@ public class MavenProjectSupplier implements ProjectSupplier {
     private static final String TARGET_DIR_NAME = "target";
     private static final String POM_FILE = "pom.xml";
     private static final String DOT = ".";
+    private static final List<String> FS_ROOTS = Arrays.stream(File.listRoots())
+                                                       .map(File::getPath)
+                                                       .collect(Collectors.toList());
 
     private static final Predicate<Path> NOT_HIDDEN = file -> {
         final String name = file.getFileName().toString();
@@ -258,11 +262,25 @@ private Project createProject(Path projectDir, BuildType buildType) {
         // Add resource components
 
         for (String resourcesDirEntry : resourcesDirs) {
-            String[] dir = resourcesDirEntry.split(ProjectConfig.RESOURCE_INCLUDE_EXCLUDE_SEPARATOR);
-            String resourcesDir = dir[0];
+
+            // capture the file system root part of the entry
+            // on Windows this will be the drive (E.g. C:\), on Unix, just a slash
+            String prefix = FS_ROOTS.stream()
+                                    .filter(resourcesDirEntry::startsWith)
+                                    .findFirst()
+                                    .orElse("");
+
+            // split the non prefix part of the entry
+            String[] dir = resourcesDirEntry
+                    .substring(prefix.length())
+                    .split(ProjectConfig.RESOURCE_INCLUDE_EXCLUDE_SEPARATOR);
+
+            String resourcesDir = prefix + dir[0];
             List<String> includes = includeExcludeList(dir, 1);
             List<String> excludes = includeExcludeList(dir, 2);
             BiPredicate<Path, Path> filter = filter(includes, excludes);
+
+            // resourcesDirPath may not be nested inside projectDir if resourcesDir is absolute
             Path resourcesDirPath = projectDir.resolve(resourcesDir);
             if (Files.isDirectory(resourcesDirPath)) {
                 BuildRootType buildRootType = BuildRootType.create(DirectoryType.Resources, filter);