Fixes issue #14

Author: davidkarlsen

library/src/main/java/io/codearte/props2yaml/Props2YAML.java

@@ -46,11 +46,14 @@ public static Props2YAML fromFile(Path path) {
         return new Props2YAML(path.toFile());
     }
 
-    public String convert() {
-        PropertyTree tree = new TreeBuilder(properties).build();
+    public String convert(boolean useNumericKeysAsArrayIndexes) {
+        PropertyTree tree = new TreeBuilder(properties,useNumericKeysAsArrayIndexes).build();
         tree = new ArrayProcessor(tree).apply();
         return tree.toYAML();
     }
+    public String convert() {
+        return convert(true);
+    }
 
     private void reportError(IOException e) {
         LOG.error("Conversion failed", e);

library/src/main/java/io/codearte/props2yaml/TreeBuilder.java

@@ -16,9 +16,15 @@ class TreeBuilder {
 
     private final Properties properties;
     private final static Pattern pattern = Pattern.compile("[0-9]+");
+    private final boolean useNumericKeysAsArrayIndexes;
 
-    public TreeBuilder(Properties properties) {
+    public TreeBuilder(Properties properties, boolean useNumericKeysAsArrayIndexes) {
         this.properties = properties;
+        this.useNumericKeysAsArrayIndexes = useNumericKeysAsArrayIndexes;
+    }
+
+    public TreeBuilder(Properties properties) {
+        this(properties,true);
     }
 
     public PropertyTree build() {
@@ -34,7 +40,7 @@ public PropertyTree build() {
 
     private List<String> splitPropertyName(String property) {
         List<String> strings = Arrays.asList(property.split("\\."));
-        List<String> result = applyArrayNotation(strings);
+        List<String> result = useNumericKeysAsArrayIndexes ? applyArrayNotation(strings) : strings;
         Collections.reverse(result);
         return result;
     }

library/src/test/groovy/io/codearte/props2yaml/KeyConvertingSpec.groovy

@@ -41,4 +41,18 @@ class KeyConvertingSpec extends Specification {
             yaml != ~'a: 1'
     }
 
+    def "Should read numeric subkeys"() {
+        given:
+            String props = '''some.1.key = somevalue
+                              some.1.key2 = somevalue2'''
+        when:
+            String yaml = new Props2YAML(props).convert(false);
+            System.out.println( yaml );
+        then:
+            yaml =~ 'some:'
+            yaml =~ '\'1\':'
+            yaml =~ 'key: somevalue'
+            yaml =~ 'key2: somevalue2'
+    }
+
 }

maven-plugin/src/main/java/io/codearte/props2yaml/maven/ConvertMojo.java

@@ -22,6 +22,9 @@ public class ConvertMojo extends AbstractMojo {
     @Parameter(property = "properties", required = false)
     private String properties;
 
+    @Parameter(property = "useNumericKeysAsArrayIndexes", required = false, defaultValue = "true")
+    private boolean useNumericKeysAsArrayIndexes;
+
     @Override
     public void execute() throws MojoExecutionException, MojoFailureException {
         if (properties == null || properties.isEmpty()) {
@@ -32,7 +35,7 @@ public void execute() throws MojoExecutionException, MojoFailureException {
         try {
             getLog().info("Properties to convert: " + propertiesPath);
             String content = new String(Files.readAllBytes(propertiesPath));
-            String yaml = Props2YAML.fromContent(content).convert();
+            String yaml = Props2YAML.fromContent(content).convert(useNumericKeysAsArrayIndexes);
             Path destinationPath = propertiesPath.getParent().resolve(getFileName());
             getLog().info("Write YAML to: " + destinationPath);
             try (BufferedWriter writer = Files.newBufferedWriter(destinationPath)) {