#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/el/CharMatch.java

@@ -0,0 +1,59 @@
+package io.ebeaninternal.server.el;
+
+/**
+ * Case insensitive string matching.
+ * <p>
+ * Provides an alternative to using regular expressions.
+ * </p>
+ */
+public final class CharMatch {
+
+  private final char[] upperChars;
+
+  private final int maxLength;
+
+  public CharMatch(String s) {
+    this.upperChars = s.toUpperCase().toCharArray();
+    this.maxLength = upperChars.length;
+  }
+
+  public boolean startsWith(String other) {
+
+    if (other == null || other.length() < maxLength) {
+      return false;
+    }
+
+    char ta[] = other.toCharArray();
+
+    int pos = -1;
+    while (++pos < maxLength) {
+      char c1 = upperChars[pos];
+      char c2 = Character.toUpperCase(ta[pos]);
+      if (c1 != c2) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  public boolean endsWith(String other) {
+
+    if (other == null || other.length() < maxLength) {
+      return false;
+    }
+
+    char ta[] = other.toCharArray();
+
+    int offset = ta.length - maxLength;
+    int pos = maxLength;
+    while (--pos >= 0) {
+      char c1 = upperChars[pos];
+      char c2 = Character.toUpperCase(ta[offset + pos]);
+      if (c1 != c2) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+}