[Issue #48] detect root project location also in special cases:

- maven is executed on a submodule
- projects aggregation root and parent is not the same
- child modules may reside in deeper nested folders without a pom.xml in between

src/it/rootlocation-in-submodule-deeperlevel-separate-parent/invoker.properties

@@ -0,0 +1,3 @@
+invoker.goals = validate
+invoker.buildResult = success
+invoker.project = modules/submodule

src/it/rootlocation-in-submodule-deeperlevel-separate-parent/modules/submodule/pom.xml

@@ -0,0 +1,17 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>../../parent/pom.xml</relativePath>
+  </parent>
+
+  <artifactId>project</artifactId>
+  <packaging>jar</packaging>
+
+  <name>rootlocation sub project</name>
+
+</project>

src/it/rootlocation-in-submodule-deeperlevel-separate-parent/parent/pom.xml

@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.codehaus.mojo</groupId>
+  <artifactId>build-helper-rootlocation-parent</artifactId>
+  <version>1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>@project.artifactId@</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>rootlocation</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

src/it/rootlocation-in-submodule-deeperlevel-separate-parent/pom.xml

@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>parent/pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.codehaus.mojo</groupId>
+  <artifactId>build-helper-rootlocation-root</artifactId>
+  <version>1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <name>rootlocation search top root</name>
+  <description>
+    Tests that rootlocation finds the highest basedir.
+  </description>
+
+  <modules>
+    <module>parent</module>
+    <module>modules/submodule</module>
+  </modules>
+
+</project>

src/it/rootlocation-in-submodule-deeperlevel-separate-parent/verify.groovy

@@ -0,0 +1,9 @@
+File file = new File( basedir, "build.log" )
+assert file.exists()
+
+String text = file.getText("utf-8")
+
+def rootFolderName = (text =~ /(?ms)(.*?)define property rootlocation = "(.*?)[\/\\]([^\/\\"]+)"(.*?)/)[0][3]
+assert rootFolderName == "rootlocation-in-submodule-deeperlevel-separate-parent"
+
+return true

src/it/rootlocation-in-submodule-nested-separate-parent/invoker.properties

@@ -0,0 +1,3 @@
+invoker.goals = validate
+invoker.buildResult = success
+invoker.project = modules/submodule

src/it/rootlocation-in-submodule-nested-separate-parent/modules/pom.xml

@@ -0,0 +1,19 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>../parent/pom.xml</relativePath>
+  </parent>
+
+  <artifactId>build-helper-rootlocation-modules</artifactId>
+  <packaging>pom</packaging>
+
+  <modules>
+    <module>submodule</module>
+  </modules>
+
+</project>

src/it/rootlocation-in-submodule-nested-separate-parent/modules/submodule/pom.xml

@@ -0,0 +1,17 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>../../parent/pom.xml</relativePath>
+  </parent>
+
+  <artifactId>project</artifactId>
+  <packaging>jar</packaging>
+
+  <name>rootlocation sub project</name>
+
+</project>

src/it/rootlocation-in-submodule-nested-separate-parent/parent/pom.xml

@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.codehaus.mojo</groupId>
+  <artifactId>build-helper-rootlocation-parent</artifactId>
+  <version>1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>@project.artifactId@</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>rootlocation</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

src/it/rootlocation-in-submodule-nested-separate-parent/pom.xml

@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>parent/pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.codehaus.mojo</groupId>
+  <artifactId>build-helper-rootlocation-root</artifactId>
+  <version>1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <name>rootlocation search top root</name>
+  <description>
+    Tests that rootlocation finds the highest basedir.
+  </description>
+
+  <modules>
+    <module>parent</module>
+    <module>modules</module>
+  </modules>
+
+</project>

src/it/rootlocation-in-submodule-nested-separate-parent/verify.groovy

@@ -0,0 +1,9 @@
+File file = new File( basedir, "build.log" )
+assert file.exists()
+
+String text = file.getText("utf-8")
+
+def rootFolderName = (text =~ /(?ms)(.*?)define property rootlocation = "(.*?)[\/\\]([^\/\\"]+)"(.*?)/)[0][3]
+assert rootFolderName == "rootlocation-in-submodule-nested-separate-parent"
+
+return true

src/it/rootlocation-in-submodule-separate-parent/invoker.properties

@@ -0,0 +1,3 @@
+invoker.goals = validate
+invoker.buildResult = success
+invoker.project = submodule

src/it/rootlocation-in-submodule-separate-parent/parent/pom.xml

@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.codehaus.mojo</groupId>
+  <artifactId>build-helper-rootlocation-parent</artifactId>
+  <version>1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>@project.artifactId@</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>rootlocation</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

src/it/rootlocation-in-submodule-separate-parent/pom.xml

@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>parent/pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.codehaus.mojo</groupId>
+  <artifactId>build-helper-rootlocation-root</artifactId>
+  <version>1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <name>rootlocation search top root</name>
+  <description>
+    Tests that rootlocation finds the highest basedir.
+  </description>
+
+  <modules>
+    <module>parent</module>
+    <module>submodule</module>
+  </modules>
+
+</project>

src/it/rootlocation-in-submodule-separate-parent/submodule/pom.xml

@@ -0,0 +1,17 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>build-helper-rootlocation-parent</artifactId>
+    <version>1-SNAPSHOT</version>
+    <relativePath>../parent/pom.xml</relativePath>
+  </parent>
+
+  <artifactId>project</artifactId>
+  <packaging>jar</packaging>
+
+  <name>rootlocation sub project</name>
+
+</project>

src/it/rootlocation-in-submodule-separate-parent/verify.groovy

@@ -0,0 +1,9 @@
+File file = new File( basedir, "build.log" )
+assert file.exists()
+
+String text = file.getText("utf-8")
+
+def rootFolderName = (text =~ /(?ms)(.*?)define property rootlocation = "(.*?)[\/\\]([^\/\\"]+)"(.*?)/)[0][3]
+assert rootFolderName == "rootlocation-in-submodule-separate-parent"
+
+return true

src/it/rootlocation-in-submodule/verify.groovy

@@ -3,6 +3,7 @@ assert file.exists()
 
 String text = file.getText("utf-8")
 
-assert text.matches('(?ms)(.*?)define property rootlocation = "(.*)[/\\\\]rootlocation-in-submodule"(.*?)')
+def rootFolderName = (text =~ /(?ms)(.*?)define property rootlocation = "(.*?)[\/\\]([^\/\\"]+)"(.*?)/)[0][3]
+assert rootFolderName == "rootlocation-in-submodule"
 
 return true

src/it/rootlocation-run-only-at-exec-root/verify.groovy

@@ -3,7 +3,9 @@ assert file.exists()
 
 String text = file.getText("utf-8")
 
-assert text.matches('(?ms)(.*?)define property rootlocation = "(.*)[/\\\\]rootlocation-run-only-at-exec-root"(.*?)')
+def rootFolderName = (text =~ /(?ms)(.*?)define property rootlocation = "(.*?)[\/\\]([^\/\\"]+)"(.*?)/)[0][3]
+assert rootFolderName == "rootlocation-run-only-at-exec-root"
+
 assert text.contains("Skip getting the rootlocation in this project because it's not the Execution Root")
 
 return true

src/it/rootlocation/verify.groovy

@@ -3,6 +3,7 @@ assert file.exists()
 
 String text = file.getText("utf-8")
 
-assert text.matches('(?ms)(.*?)define property rootlocation = "(.*)[/\\\\]rootlocation"(.*?)')
+def rootFolderName = (text =~ /(?ms)(.*?)define property rootlocation = "(.*?)[\/\\]([^\/\\"]+)"(.*?)/)[0][3]
+assert rootFolderName == "rootlocation"
 
 return true

src/main/java/org/codehaus/mojo/buildhelper/AbstractDefinePropertyMojo.java

@@ -35,7 +35,7 @@ public abstract class AbstractDefinePropertyMojo
      * The maven project
      */
     @Parameter( readonly = true, defaultValue = "${project}" )
-    private MavenProject project;
+    protected MavenProject project;
 
     protected void defineProperty( String name, String value )
     {