Feature request List available resources in the native image.

This sample code (taken from <a href="https://www.logicbig.com/how-to/java/list-all-fi

This is the Ant task that works for me at the moment: <div class="snippet-clipboar

@OnnoTIP have a look at this project: <a href="https://github.com/bclozel/native-resou

[GR-52222] List available resources about graal HOT 3 OPEN

commented on June 8, 2024

[GR-52222] List available resources

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Comments (3)

commented on June 8, 2024

This sample code (taken from https://www.logicbig.com/how-to/java/list-all-files-in-resouce-folder.html) works, but in native-image mode it uses the filesystem even though the URL starts with 'resource:'.

public class Test{

  private static File[] getResourceFolderFiles (String folder) {
    ClassLoader loader = Thread.currentThread().getContextClassLoader();
    URL url = loader.getResource(folder);
    String path = url.getPath();
    return new File(path).listFiles();
  }

  public static void main (String[] args) {
    for (File f : getResourceFolderFiles("aFolderInClassPath")) {
    System.out.println(f);
   }
  }
}

Other suggestions or alternatives are welcome :-)

FWIW: I want the files packaged with the native-image to not have an external dependency. Considered using a container-image, but that defeats the purpose a bit and requires a container runtime.

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commented on June 8, 2024

This is the Ant task that works for me at the moment:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-antrun-plugin</artifactId>
    <version>${maven-antrun-plugin.version}</version>
    <executions>
        <execution>
            <phase>generate-sources</phase>
            <configuration>
                <target>
                    <macrodef name="replaceproperty" taskname="@{taskname}">
                        <attribute name="src" />
                        <attribute name="dest" default="" />
                        <attribute name="replace" default="" />
                        <attribute name="with" default="" />
                        <sequential>
                            <loadresource property="@{dest}">
                                <propertyresource name="@{src}" />
                                <filterchain>
                                    <tokenfilter>
                                        <filetokenizer/>
                                        <replacestring from="@{replace}" to="@{with}"/>
                                    </tokenfilter>
                                </filterchain>
                            </loadresource>
                        </sequential>
                    </macrodef>
                    <delete file="src/main/resources/common/resource-allocation-table" />
                    <defaultexcludes remove="**/.gitignore" />
                    <pathconvert property="resource.files" pathsep="${line.separator}">
                        <fileset dir="src/main/resources" />
                    </pathconvert>
                    <replaceproperty src="resource.files" dest="stripped.resource.files" replace="${user.dir}/src/main/resources/" with=""/>
                    <echo file="src/main/resources/common/resource-allocation-table" message="${stripped.resource.files}" />
                </target>
            </configuration>
            <goals>
                <goal>run</goal>
            </goals>
        </execution>
    </executions>
</plugin>

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