Renamed CuttableString to more generic String2.

[svjatoslav_commons.git] / src / main / java / eu / svjatoslav / commons / string / String2.java

diff --git a/src/main/java/eu/svjatoslav/commons/string/String2.java b/src/main/java/eu/svjatoslav/commons/string/String2.java
new file mode 100755 (executable)
index 0000000..fe83ade
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/commons/string/String2.java
@@ -0,0 +1,89 @@
+/*
+ * Svjatoslav Commons - shared library of common functionality.
+ * Copyright ©2012-2014, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 3 of the GNU Lesser General Public License
+ * or later as published by the Free Software Foundation.
+ */
+
+package eu.svjatoslav.commons.string;
+
+import java.util.Vector;
+
+public class String2 {
+
+       private final Vector<Character> chars = new Vector<Character>();
+
+       public String2(final String value) {
+               for (final Character c : value.toCharArray())
+                       chars.add(c);
+       }
+
+       public String2 addPrefix(final String prefix) {
+               int j = 0;
+               for (final char c : prefix.toCharArray())
+                       chars.insertElementAt(c, j++);
+
+               return this;
+       }
+
+       public String2 addSuffix(final String suffix) {
+               for (final char c : suffix.toCharArray())
+                       chars.add(c);
+
+               return this;
+       }
+
+       /**
+        * Cut given amount of characters from the left of the string. Return cutted
+        * part.
+        */
+       public String cutLeft(final int cutAmount) {
+
+               int actualCutAmount = cutAmount;
+
+               if (actualCutAmount > getLength())
+                       actualCutAmount = getLength();
+
+               final String result = getSubString(0, actualCutAmount);
+
+               chars.subList(0, actualCutAmount).clear();
+
+               return result;
+       }
+
+       public void enforceLength(final int targetLength) {
+               if (getLength() > targetLength)
+                       chars.subList(targetLength, getLength()).clear();
+               else if (getLength() < targetLength) {
+                       final int charactersToAdd = targetLength - getLength();
+                       for (int i = 0; i < charactersToAdd; i++)
+                               chars.add(' ');
+               }
+       }
+
+       public int getLength() {
+               return chars.size();
+       }
+
+       public String getSubString(final int startInclusive, final int endExclusive) {
+               final char[] charArray = new char[endExclusive - startInclusive];
+
+               int j = 0;
+               for (int i = startInclusive; i < endExclusive; i++) {
+                       charArray[j] = chars.get(i);
+                       j++;
+               }
+               return new String(charArray);
+       }
+
+       public boolean isEmpty() {
+               return chars.size() == 0;
+       }
+
+       @Override
+       public String toString() {
+               return getSubString(0, chars.size());
+       }
+}