Reverse dependancy of DateUtils on Touch

Also add test

src/main/org/apache/tools/ant/taskdefs/Touch.java

@@ -39,6 +39,7 @@ import org.apache.tools.ant.types.resources.FileProvider;
 import org.apache.tools.ant.types.resources.FileResource;
 import org.apache.tools.ant.types.resources.Touchable;
 import org.apache.tools.ant.types.resources.Union;
+import org.apache.tools.ant.util.DateUtils;
 import org.apache.tools.ant.util.FileNameMapper;
 import org.apache.tools.ant.util.FileUtils;
 
@@ -59,31 +60,18 @@ public class Touch extends Task {
         DateFormat getFallbackFormat();
     }
 
+    /**
+     * Provides access to DateUtils.EN_US_DATE_FORMAT_MIN (primary) and
+     * DateUtils.EN_US_DATE_FORMAT_SEC (fallback).
+     */
     public static final DateFormatFactory DEFAULT_DF_FACTORY
         = new DateFormatFactory() {
 
-        private ThreadLocal<DateFormat> primary =
-            new ThreadLocal<DateFormat>() {
-                @Override
-                protected DateFormat initialValue() {
-                    return new SimpleDateFormat("MM/dd/yyyy hh:mm a",
-                                                Locale.US);
-                }
-            };
-        private ThreadLocal<DateFormat> fallback =
-            new ThreadLocal<DateFormat>() {
-                @Override
-                protected DateFormat initialValue() {
-                    return new SimpleDateFormat("MM/dd/yyyy hh:mm:ss a",
-                                                Locale.US);
-                }
-            };
-
         public DateFormat getPrimaryFormat() {
-            return primary.get();
+            return DateUtils.EN_US_DATE_FORMAT_MIN.get();
         }
         public DateFormat getFallbackFormat() {
-            return fallback.get();
+            return DateUtils.EN_US_DATE_FORMAT_SEC.get();
         }
     };
     private static final FileUtils FILE_UTILS = FileUtils.getFileUtils();

src/main/org/apache/tools/ant/util/DateUtils.java

@@ -29,8 +29,6 @@ import java.util.TimeZone;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import org.apache.tools.ant.taskdefs.Touch;
-
 /**
  * Helper methods to deal with date/time formatting with a specific
  * defined format (<a href="http://www.w3.org/TR/NOTE-datetime">ISO8601</a>)
@@ -93,6 +91,32 @@ public final class DateUtils {
     private static final ChoiceFormat SECONDS_FORMAT =
             new ChoiceFormat(LIMITS, SECONDS_PART);
 
+    /**
+     * Provides a thread-local US-style date format. Exactly as used by
+     * {@code <touch>}, to minute precision:
+     * {@code SimpleDateFormat("MM/dd/yyyy hh:mm a", Locale.US)}
+     */
+    public static final ThreadLocal<DateFormat> EN_US_DATE_FORMAT_MIN =
+        new ThreadLocal<DateFormat>() {
+            @Override
+            protected DateFormat initialValue() {
+                return new SimpleDateFormat("MM/dd/yyyy hh:mm a", Locale.US);
+            }
+        };
+
+    /**
+     * Provides a thread-local US-style date format. Exactly as used by
+     * {@code <touch>}, to second precision:
+     * {@code SimpleDateFormat("MM/dd/yyyy hh:mm:ss a", Locale.US)}
+     */
+    public static final ThreadLocal<DateFormat> EN_US_DATE_FORMAT_SEC =
+        new ThreadLocal<DateFormat>() {
+            @Override
+            protected DateFormat initialValue() {
+                return new SimpleDateFormat("MM/dd/yyyy hh:mm:ss a", Locale.US);
+            }
+        };
+
     static {
         MINUTE_SECONDS.setFormat(0, MINUTES_FORMAT);
         MINUTE_SECONDS.setFormat(1, SECONDS_FORMAT);
@@ -332,11 +356,11 @@ public final class DateUtils {
         } catch (NumberFormatException nfe) {}
 
         try {
-            return Touch.DEFAULT_DF_FACTORY.getPrimaryFormat().parse(dateStr);
+            return EN_US_DATE_FORMAT_MIN.get().parse(dateStr);
         } catch (ParseException pe) {}
 
         try {
-           return Touch.DEFAULT_DF_FACTORY.getFallbackFormat().parse(dateStr);
+           return EN_US_DATE_FORMAT_SEC.get().parse(dateStr);
         } catch (ParseException pe) {}
 
         Matcher m = iso8601normalizer.matcher(dateStr);

src/tests/antunit/taskdefs/zip-test.xml

@@ -182,4 +182,24 @@
         <fileset dir="${basedir}" includes="zip-test.xml"/>
       </zip>
     </target>
+
+    <target name="testSetZipModTime">
+      <mkdir dir="${input}/"/>
+      <touch file="${input}/test1.txt"/>
+      <mkdir dir="${output}"/>
+      <zip destfile="${output}/test.zip" basedir="${input}" modificationtime="2016-01-01 00:00">
+        <fileset dir="${input}"/>
+      </zip>
+      <checksum file="${output}/test.zip" property="testSetZipModTime_hash" />
+      <delete file="${output}/test.zip" />
+
+      <touch file="${input}/test1.txt"/>
+      <zip destfile="${output}/test.zip" basedir="${input}" modificationtime="2016-01-01 00:00">
+        <fileset dir="${input}"/>
+      </zip>
+      <checksum file="${output}/test.zip" property="testSetZipModTime_hash" verifyproperty="testSetZipModTime_okay" />
+      <au:assertTrue>
+        <equals arg1="${testSetZipModTime_okay}" arg2="true" />
+      </au:assertTrue>
+    </target>
 </project>