1 files changed, 52 insertions, 0 deletions
diff --git a/OpenPGP-Keychain/src/com/google/zxing/common/ECI.java b/OpenPGP-Keychain/src/com/google/zxing/common/ECI.java
new file mode 100644
index 000000000..444c779c2
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/google/zxing/common/ECI.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2008 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.common;
+
+/**
+ * Superclass of classes encapsulating types ECIs, according to "Extended Channel Interpretations"
+ * 5.3 of ISO 18004.
+ *
+ * @author Sean Owen
+ */
+public abstract class ECI {
+
+  private final int value;
+
+  ECI(int value) {
+    this.value = value;
+  }
+
+  public int getValue() {
+    return value;
+  }
+
+  /**
+   * @param value ECI value
+   * @return ECI representing ECI of given value, or null if it is legal but unsupported
+   * @throws IllegalArgumentException if ECI value is invalid
+   */
+  public static ECI getECIByValue(int value) {
+    if (value < 0 || value > 999999) {
+      throw new IllegalArgumentException("Bad ECI value: " + value);
+    }
+    if (value < 900) { // Character set ECIs use 000000 - 000899
+      return CharacterSetECI.getCharacterSetECIByValue(value);
+    }
+    return null;
+  }
+
+}