toml-path: match usage of yaml-path (#527)

Author: itzg

src/main/java/me/itzg/helpers/files/TomlPathCommand.java

@@ -1,35 +1,29 @@
 package me.itzg.helpers.files;
 
-import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.dataformat.toml.TomlMapper;
 import com.jayway.jsonpath.Configuration;
 import com.jayway.jsonpath.DocumentContext;
 import com.jayway.jsonpath.JsonPath;
 import com.jayway.jsonpath.ParseContext;
 import com.jayway.jsonpath.spi.json.JacksonJsonProvider;
-import java.nio.file.Path;
-import java.util.Map;
+import java.io.File;
 import java.util.concurrent.Callable;
 import picocli.CommandLine.Command;
 import picocli.CommandLine.ExitCode;
+import picocli.CommandLine.Option;
 import picocli.CommandLine.Parameters;
 
 @Command(name = "toml-path", description = "Extracts a path from a TOML file using json-path syntax")
 public class TomlPathCommand implements Callable<Integer> {
 
-    public static final TypeReference<Map<String, Object>> MAP_TYPE = new TypeReference<Map<String, Object>>() {
-    };
+    @Option(names = "--file", paramLabel = "FILE", description = "A TOML file to query. If not set, reads stdin")
+    File tomlFile;
 
-    @Parameters(index = "0", arity = "1",
+    @Parameters(arity = "1",
         paramLabel = "query",
         description = "JSON path expression where root element $ can be omitted")
     String query;
 
-    @Parameters(index = "1", arity = "0..1",
-        paramLabel = "file",
-        description = "TOML file or reads stdin")
-    Path path;
-
     @Override
     public Integer call() throws Exception {
 
@@ -40,8 +34,8 @@ public Integer call() throws Exception {
         );
 
         final DocumentContext context;
-        if (path != null) {
-            context = parseContext.parse(path.toFile());
+        if (tomlFile != null) {
+            context = parseContext.parse(tomlFile);
         }
         else {
             context = parseContext.parse(System.in);

src/test/java/me/itzg/helpers/files/TomlPathCommandTest.java

@@ -1,6 +1,6 @@
 package me.itzg.helpers.files;
 
-import static com.github.stefanbirkner.systemlambda.SystemLambda.tapSystemOut;
+import static com.github.stefanbirkner.systemlambda.SystemLambda.tapSystemOutNormalized;
 import static org.assertj.core.api.Assertions.assertThat;
 
 import java.nio.file.Paths;
@@ -14,11 +14,11 @@ class TomlPathCommandTest {
     @ParameterizedTest
     @ValueSource(strings = {"$.bind", ".bind"})
     void extractsVelocityBind(String queryPath) throws Exception {
-        final String out = tapSystemOut(() -> {
+        final String out = tapSystemOutNormalized(() -> {
             final int exitCode = new CommandLine(new TomlPathCommand())
                 .execute(
-                    queryPath,
-                    Paths.get("src/test/resources/velocity.toml").toString()
+                    "--file", Paths.get("src/test/resources/velocity.toml").toString(),
+                    queryPath
                 );
 
             assertThat(exitCode).isEqualTo(ExitCode.OK);