Merge pull request #387 from gdgib/G2-1667-GetArgumentAsPath

G2-1667 CommandInvocation Path Argument Accessor

ax-command/src/main/java/com/g2forge/alexandria/command/invocation/CommandInvocation.java

@@ -45,4 +45,15 @@ public static final CommandInvocation<InputStream, PrintStream> of(String... arg
 	protected final Path working;
 
 	protected final IEnvironment environment;
+
+	public Path getArgumentAsPath(int index) {
+		final String string = getArguments().get(index);
+		if (string == null) return null;
+
+		final Path path = Paths.get(string);
+		if (path.isAbsolute()) return path;
+		final Path working = getWorking();
+		if (working == null) return path;
+		return working.resolve(path);
+	}
 }

ax-command/src/test/java/com/g2forge/alexandria/command/invocation/TestCommandInvocation.java

@@ -0,0 +1,35 @@
+package com.g2forge.alexandria.command.invocation;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.junit.Test;
+
+import com.g2forge.alexandria.java.core.helpers.HCollection;
+import com.g2forge.alexandria.test.HAssert;
+
+public class TestCommandInvocation {
+	@Test
+	public void getArgumentAsPathAbsolute() {
+		final Path absolutePath = CommandInvocation.of().getWorking().toAbsolutePath();
+		HAssert.assertEquals(absolutePath, new CommandInvocation<>(null, HCollection.asList(absolutePath.toString()), null, null, null).getArgumentAsPath(0));
+	}
+
+	@Test
+	public void getArgumentAsPathNull() {
+		HAssert.assertNull(new CommandInvocation<>(null, HCollection.asList((String) null), null, null, null).getArgumentAsPath(0));
+	}
+
+	@Test
+	public void getArgumentAsPathRelative() {
+		final Path relativePath = CommandInvocation.of().getWorking();
+		HAssert.assertEquals(relativePath, new CommandInvocation<>(null, HCollection.asList(relativePath.toString()), null, null, null).getArgumentAsPath(0));
+	}
+
+	@Test
+	public void getArgumentAsPathWorkingRelative() {
+		final Path relativePath = Paths.get("relative");
+		final Path working = CommandInvocation.of().getWorking();
+		HAssert.assertEquals(working.resolve(relativePath), new CommandInvocation<>(null, HCollection.asList(relativePath.toString()), null, working, null).getArgumentAsPath(0));
+	}
+}