eliminate unnecessary variables, slight refactoring

java/libphonenumber/src/com/google/i18n/phonenumbers/MultiFileMetadataSourceImpl.java

@@ -18,7 +18,6 @@ package com.google.i18n.phonenumbers;
 
 import com.google.i18n.phonenumbers.nano.Phonemetadata.PhoneMetadata;
 import com.google.i18n.phonenumbers.nano.Phonemetadata.PhoneMetadataCollection;
-import com.google.protobuf.nano.CodedInputByteBufferNano;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -104,8 +103,8 @@ final class MultiFileMetadataSourceImpl implements MetadataSource {
       throw new IllegalStateException("missing metadata: " + fileName);
     }
     try {
-      ObjectInputStream in = new ObjectInputStream(source);
-      PhoneMetadataCollection metadataCollection = loadMetadataAndCloseInput(in);
+      PhoneMetadataCollection metadataCollection =
+          loadMetadataAndCloseInput(new ObjectInputStream(source));
       PhoneMetadata[] metadataList = metadataCollection.metadata;
       if (metadataList.length == 0) {
         logger.log(Level.SEVERE, "empty metadata: " + fileName);
@@ -140,9 +139,8 @@ final class MultiFileMetadataSourceImpl implements MetadataSource {
 
     PhoneMetadataCollection metadataCollection = new PhoneMetadataCollection();
     try {
-      CodedInputByteBufferNano byteBuffer = MetadataManager.convertStreamToByteBuffer(source,
-          MULTI_FILE_BUFFER_SIZE);
-      metadataCollection.mergeFrom(byteBuffer);
+      metadataCollection.mergeFrom(
+          MetadataManager.convertStreamToByteBuffer(source, MULTI_FILE_BUFFER_SIZE));
     } catch (IOException e) {
       logger.log(Level.WARNING, "error reading input (ignored)", e);
     } finally {

java/libphonenumber/src/com/google/i18n/phonenumbers/SingleFileMetadataSourceImpl.java

@@ -18,7 +18,6 @@ package com.google.i18n.phonenumbers;
 
 import com.google.i18n.phonenumbers.nano.Phonemetadata.PhoneMetadata;
 import com.google.i18n.phonenumbers.nano.Phonemetadata.PhoneMetadataCollection;
-import com.google.protobuf.nano.CodedInputByteBufferNano;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -101,10 +100,9 @@ final class SingleFileMetadataSourceImpl implements MetadataSource {
       logger.log(Level.SEVERE, "missing metadata: " + fileName);
       throw new IllegalStateException("missing metadata: " + fileName);
     }
-    ObjectInputStream in = null;
     try {
-      in = new ObjectInputStream(source);
-      PhoneMetadataCollection metadataCollection = loadMetadataAndCloseInput(in);
+      PhoneMetadataCollection metadataCollection =
+          loadMetadataAndCloseInput(new ObjectInputStream(source));
       PhoneMetadata[] metadataList = metadataCollection.metadata;
       if (metadataList.length == 0) {
         logger.log(Level.SEVERE, "empty metadata: " + fileName);
@@ -140,9 +138,8 @@ final class SingleFileMetadataSourceImpl implements MetadataSource {
 
     PhoneMetadataCollection metadataCollection = new PhoneMetadataCollection();
     try {
-      CodedInputByteBufferNano byteBuffer = MetadataManager.convertStreamToByteBuffer(
-          source, SINGLE_FILE_BUFFER_SIZE);
-      metadataCollection.mergeFrom(byteBuffer);
+      metadataCollection.mergeFrom(
+          MetadataManager.convertStreamToByteBuffer(source, SINGLE_FILE_BUFFER_SIZE));
     } catch (IOException e) {
       logger.log(Level.WARNING, "error reading input (ignored)", e);
     } finally {

java/libphonenumber/test/com/google/i18n/phonenumbers/PhoneNumberUtilTest.java

@@ -132,6 +132,12 @@ public class PhoneNumberUtilTest extends TestMetadataTestCase {
     assertNull(phoneUtil.getMetadataForNonGeographicalRegion(-1));
   }
 
+  private boolean exactlySame(PhoneNumberDesc first, PhoneNumberDesc second) {
+    return first.nationalNumberPattern.equals(second.nationalNumberPattern) &&
+        first.possibleNumberPattern.equals(second.possibleNumberPattern) &&
+        first.exampleNumber.equals(second.exampleNumber);
+  }
+
   public void testGetInstanceLoadUSMetadata() {
     PhoneMetadata metadata = phoneUtil.getMetadataForRegion(RegionCode.US);
     assertEquals("US", metadata.id);
@@ -145,12 +151,7 @@ public class PhoneNumberUtilTest extends TestMetadataTestCase {
     assertEquals("[13-689]\\d{9}|2[0-35-9]\\d{8}",
                  metadata.generalDesc.nationalNumberPattern);
     assertEquals("\\d{7}(?:\\d{3})?", metadata.generalDesc.possibleNumberPattern);
-    assertTrue(metadata.generalDesc.nationalNumberPattern.equals(
-        metadata.fixedLine.nationalNumberPattern));
-    assertTrue(metadata.generalDesc.possibleNumberPattern.equals(
-        metadata.fixedLine.possibleNumberPattern));
-    assertTrue(metadata.generalDesc.exampleNumber.equals(
-        metadata.fixedLine.exampleNumber));
+    assertTrue(exactlySame(metadata.generalDesc, metadata.fixedLine));
     assertEquals("\\d{10}", metadata.tollFree.possibleNumberPattern);
     assertEquals("900\\d{7}", metadata.premiumRate.nationalNumberPattern);
     // No shared-cost data is available, so it should be initialised to "NA".

tools/java/common/src/com/google/i18n/phonenumbers/BuildMetadataFromXml.java

@@ -141,7 +141,7 @@ public class BuildMetadataFromXml {
       } else {
         // For most countries, there will be only one region code for the country calling code.
         List<String> listWithRegionCode = new ArrayList<String>(1);
-        if (!regionCode.isEmpty()) {  // For alternate formats, there are no region codes at all.
+        if (!regionCode.equals("")) {  // For alternate formats, there are no region codes at all.
           listWithRegionCode.add(regionCode);
         }
         countryCodeToRegionCodeMap.put(countryCode, listWithRegionCode);
@@ -261,7 +261,7 @@ public class BuildMetadataFromXml {
       hasExplicitIntlFormatDefined = true;
     }
 
-    if (!intlFormat.format.isEmpty()) {
+    if (!intlFormat.format.equals("")) {
       List<NumberFormat> formatList =
           new ArrayList<NumberFormat>(Arrays.asList(metadata.intlNumberFormat));
       formatList.add(intlFormat);
@@ -325,7 +325,7 @@ public class BuildMetadataFromXml {
           format.nationalPrefixFormattingRule = nationalPrefixFormattingRule;
         }
 
-        if (!format.nationalPrefixFormattingRule.isEmpty()) {
+        if (!format.nationalPrefixFormattingRule.equals("")) {
           if (numberFormatElement.hasAttribute(NATIONAL_PREFIX_OPTIONAL_WHEN_FORMATTING)) {
             format.nationalPrefixOptionalWhenFormatting =
                 Boolean.valueOf(numberFormatElement.getAttribute(
@@ -430,6 +430,7 @@ public class BuildMetadataFromXml {
       numberDesc.possibleNumberPattern = "NA";
       return numberDesc;
     }
+    // TODO: Refactor into a utility class.
     if (!generalDesc.nationalNumberPattern.equals("")) {
       numberDesc.nationalNumberPattern = generalDesc.nationalNumberPattern;
     }

tools/java/cpp-build/pom.xml

@@ -42,7 +42,7 @@
             </goals>
             <configuration>
               <sources>
-                <!-- Also add ../common/src/ which contains BuildMetadataFromXml.java -->
+                <!-- Add ../common/src/ which contains BuildMetadataFromXml.java -->
                 <source>../common/src/</source>
                 <!-- Add ../../../java/libphonenumber/src/ to make Phonemetadata.java available to
                      the source directories. -->

tools/java/java-build/src/com/google/i18n/phonenumbers/BuildMetadataProtoFromXml.java

@@ -179,15 +179,15 @@ public class BuildMetadataProtoFromXml extends Command {
           if (regionCode.equals("001") || regionCode.isEmpty()) {
             regionCode = Integer.toString(metadata.countryCode);
           }
-          PhoneMetadataCollection singleCollection = new PhoneMetadataCollection();
-          singleCollection.metadata = new PhoneMetadata[1];
-          singleCollection.metadata[0] = metadata;
+          PhoneMetadataCollection outMetadataCollection = new PhoneMetadataCollection();
+          outMetadataCollection.metadata = new PhoneMetadata[1];
+          outMetadataCollection.metadata[0] = metadata;
           FileOutputStream outputForRegion = new FileOutputStream(filePrefix + "_" + regionCode);
           ObjectOutputStream out = new ObjectOutputStream(outputForRegion);
           byte[] outputArray = new byte[MULTI_FILE_BUFFER_SIZE];
           CodedOutputByteBufferNano outputBufferNano =
               CodedOutputByteBufferNano.newInstance(outputArray);
-          singleCollection.writeTo(outputBufferNano);
+          outMetadataCollection.writeTo(outputBufferNano);
           out.write(outputArray, 0, outputBufferNano.position());
           out.flush();
           out.close();