Initial Commit

iTechSharp/iTextSharp/text/factories/RomanAlphabetFactory.cs

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+using System;
+/*
+ * $Id: RomanAlphabetFactory.cs,v 1.2 2008/05/13 11:25:14 psoares33 Exp $
+ * 
+ *
+ * Copyright 2007 by Bruno Lowagie.
+ *
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the License.
+ *
+ * The Original Code is 'iText, a free JAVA-PDF library'.
+ *
+ * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
+ * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
+ * All Rights Reserved.
+ * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
+ * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
+ *
+ * Contributor(s): all the names of the contributors are added in the source code
+ * where applicable.
+ *
+ * Alternatively, the contents of this file may be used under the terms of the
+ * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
+ * provisions of LGPL are applicable instead of those above.  If you wish to
+ * allow use of your version of this file only under the terms of the LGPL
+ * License and not to allow others to use your version of this file under
+ * the MPL, indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by the LGPL.
+ * If you do not delete the provisions above, a recipient may use your version
+ * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the MPL as stated above or under the terms of the GNU
+ * Library General Public License as published by the Free Software Foundation;
+ * either version 2 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
+ * details.
+ *
+ * If you didn't download this code from the following link, you should check if
+ * you aren't using an obsolete version:
+ * http://www.lowagie.com/iText/
+ */
+
+namespace iTextSharp.text.factories {
+
+    /**
+    * This class can produce String combinations representing a number.
+    * "a" to "z" represent 1 to 26, "AA" represents 27, "AB" represents 28,
+    * and so on; "ZZ" is followed by "AAA".
+    */
+    public class RomanAlphabetFactory {
+
+        /**
+        * Translates a positive integer (not equal to zero)
+        * into a String using the letters 'a' to 'z';
+        * 1 = a, 2 = b, ..., 26 = z, 27 = aa, 28 = ab,...
+        */
+        public static String GetString(int index) {
+            if (index < 1) throw new FormatException("You can't translate a negative number into an alphabetical value.");
+            
+            index--;
+            int bytes = 1;
+            int start = 0;
+            int symbols = 26;  
+            while (index >= symbols + start) {
+                bytes++;
+                start += symbols;
+                symbols *= 26;
+            }
+                  
+            int c = index - start;
+            char[] value = new char[bytes];
+            while (bytes > 0) {
+                value[--bytes] = (char)( 'a' + (c % 26));
+                c /= 26;
+            }
+            
+            return new String(value);
+        }
+        
+        /**
+        * Translates a positive integer (not equal to zero)
+        * into a String using the letters 'a' to 'z';
+        * 1 = a, 2 = b, ..., 26 = z, 27 = aa, 28 = ab,...
+        */
+        public static String GetLowerCaseString(int index) {
+            return GetString(index);        
+        }
+        
+        /**
+        * Translates a positive integer (not equal to zero)
+        * into a String using the letters 'A' to 'Z';
+        * 1 = A, 2 = B, ..., 26 = Z, 27 = AA, 28 = AB,...
+        */
+        public static String GetUpperCaseString(int index) {
+            return GetString(index).ToUpper(System.Globalization.CultureInfo.InvariantCulture);
+        }
+
+        
+        /**
+        * Translates a positive integer (not equal to zero)
+        * into a String using the letters 'a' to 'z'
+        * (a = 1, b = 2, ..., z = 26, aa = 27, ab = 28,...).
+        */
+        public static String GetString(int index, bool lowercase) {
+            if (lowercase) {
+                return GetLowerCaseString(index);
+            }
+            else {
+                return GetUpperCaseString(index);
+            }
+        }
+    }
+}