Refactored

git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353656 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/record/FooterRecord.java

@@ -107,21 +107,6 @@ public class FooterRecord
          return ((field_2_unicode_flag & 0xFF) == 1);
     }
 
-    /**
-     * check the parameter has multibyte character
-     *
-     * @param value  string to check
-     * @return  boolean result
-     *  true:string has at least one multibyte character
-     */
-    private static boolean hasMultibyte(String value){
-        if( value == null )return false;
-        for(int i = 0 ; i < value.length() ; i++ ){
-            char c = value.charAt(i);
-            if(c > 0xFF )return true;
-        }
-        return false;
-    }
 
     /**
      * set the length of the footer string
@@ -146,7 +131,7 @@ public class FooterRecord
     {
         field_3_footer = footer;
         field_2_unicode_flag = 
-            (byte) (hasMultibyte(field_3_footer) ? 1 : 0);
+            (byte) (StringUtil.hasMultibyte(field_3_footer) ? 1 : 0);
     }
 
     /**

src/java/org/apache/poi/hssf/record/HeaderRecord.java

@@ -107,22 +107,6 @@ public class HeaderRecord
          return ((field_2_unicode_flag & 0xFF) == 1);
     }
 
-    /**
-     * check the parameter has multibyte character
-     *
-     * @param value  string to check
-     * @return  boolean result
-     *  true:string has at least one multibyte character
-     */
-    private static boolean hasMultibyte(String value){
-        if( value == null )return false;
-        for(int i = 0 ; i < value.length() ; i++ ){
-            char c = value.charAt(i);
-            if(c > 0xFF )return true;
-        }
-        return false;
-    }
-
     /**
      * set the length of the header string
      *
@@ -146,7 +130,7 @@ public class HeaderRecord
     {
         field_3_header = header;
         field_2_unicode_flag = 
-            (byte) (hasMultibyte(field_3_header) ? 1 : 0);
+            (byte) (StringUtil.hasMultibyte(field_3_header) ? 1 : 0);
     }
 
     /**

src/java/org/apache/poi/util/StringUtil.java

@@ -303,4 +303,32 @@ public class StringUtil {
 	public static String getPreferredEncoding() {
 		return ENCODING;
 	}
+
+	/**
+	 * check the parameter has multibyte character
+	 *
+	 * @param value  string to check
+	 * @return  boolean result
+	 *  true:string has at least one multibyte character
+	 */
+	public static boolean hasMultibyte(String value){
+	    if( value == null )return false;
+	    for(int i = 0 ; i < value.length() ; i++ ){
+	        char c = value.charAt(i);
+	        if(c > 0xFF )return true;
+	    }
+	    return false;
+	}
+	
+	/**
+	   * @param format
+	   * @return true if format is Unicode.
+	   */
+	  public static boolean isUnicodeFormat(final String format) {
+	    try {
+	      return !format.equals(new String(format.getBytes("ISO-8859-1"), "ISO-8859-1"));
+	    } catch (UnsupportedEncodingException e) {
+	      return true;
+	    }
+	  }
 }