adds a new method for loading build resources

Author: SentryMan

prism-core/src/main/java/io/avaje/prism/internal/APContextWriter.java

@@ -31,12 +31,10 @@ public static void write(PrintWriter out, String packageName) {
             + "\n"
             + "import static java.util.function.Predicate.not;\n"
             + "\n"
-            + "import java.io.BufferedReader;\n"
-            + "import java.io.IOException;\n"
-            + "import java.io.InputStreamReader;\n"
-            + "import java.util.Collection;\n"
-            + "import java.util.Optional;\n"
-            + "import java.util.Set;\n"
+            + "import java.io.*;\n"
+            + "import java.net.URI;\n"
+            + "import java.nio.file.Path;\n"
+            + "import java.util.*;\n"
             + "import java.util.stream.Stream;\n"
             + "\n"
             + "import javax.annotation.processing.Filer;\n"
@@ -384,7 +382,31 @@ public static void write(PrintWriter out, String packageName) {
             + "            .toURL()\n"
             + "            .openStream();\n"
             + "    return new BufferedReader(new InputStreamReader(inputStream));\n"
-            + "  }\n"
+            + "  }\n\n"
+            + "  /**\n"
+            + "   * Given the relative path, gets a {@link Path} from the Maven {@code target}/Gradle {@code build} folder.\n"
+            + "   * @param path the relative path of the file in the target/build folder\n"
+            + "   *\n"
+            + "   * @return the file object\n"
+            + "   * @throws IOException if unable to retrieve the file\n"
+            + "   */\n"
+            + "  public static Path getBuildResource(String path) throws IOException {\n"
+            + "\n"
+            + "    var id = UUID.randomUUID().toString();\n"
+            + "    final var uri =\n"
+            + "        filer()\n"
+            + "            .createResource(StandardLocation.CLASS_OUTPUT, \"\", path + id)\n"
+            + "            .toUri()\n"
+            + "            .toString()\n"
+            + "            .replaceFirst(id, \"\")\n"
+            + "            .replaceFirst(\"/classes\", \"\")\n"
+            + "            .replaceFirst(\"/classes/java/main\", \"\");\n"
+            + "    var updatedPath = Path.of(URI.create(uri));\n"
+            + "    if (path.contains(\"/\")) {\n"
+            + "      updatedPath.getParent().toFile().mkdirs();\n"
+            + "    }\n"
+            + "    return updatedPath;\n"
+            + "  }"
             + "}\n"
             + "");
   }

prism-core/src/main/java/io/avaje/prism/internal/ModuleInfoReaderWriter.java

@@ -243,21 +243,12 @@ public static void write(PrintWriter out, String packageName) {
             + "    }\n"
             + "  }\n"
             + "\n"
-            + "  private static boolean buildPluginAvailable() {\n"
-            + "    return resource(\"target/avaje-plugin-exists.txt\", \"/target/classes\")\n"
-            + "        || resource(\"build/avaje-plugin-exists.txt\", \"/build/classes/java/main\");\n"
+            + "    private static boolean buildPluginAvailable() {\n"
+            + "    return isPresent(\"avaje-plugin-exists.txt\");\n"
             + "  }\n"
             + "\n"
-            + "  private static boolean resource(String relativeName, String replace) {\n"
-            + "    try (var inputStream =\n"
-            + "        new URI(\n"
-            + "                APContext.filer()\n"
-            + "                    .getResource(StandardLocation.CLASS_OUTPUT, \"\", relativeName)\n"
-            + "                    .toUri()\n"
-            + "                    .toString()\n"
-            + "                    .replace(replace, \"\"))\n"
-            + "            .toURL()\n"
-            + "            .openStream()) {\n"
+            + "  private static boolean isPresent(String path) {\n"
+            + "    try (var inputStream = APContext.getBuildResource(path).toUri().toURL().openStream()) {\n"
             + "\n"
             + "      return inputStream.available() > 0;\n"
             + "    } catch (Exception e) {\n"