Add parts of zxing library to generate qr codes

1 files changed, 110 insertions, 0 deletions

diff --git a/OpenPGP-Keychain/src/com/google/zxing/common/CharacterSetECI.java b/OpenPGP-Keychain/src/com/google/zxing/common/CharacterSetECI.java
new file mode 100644
index 000000000..42b7fa9f6
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/google/zxing/common/CharacterSetECI.java
@@ -0,0 +1,110 @@
+/*
+ * 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;
+
+import java.util.Hashtable;
+
+/**
+ * Encapsulates a Character Set ECI, according to "Extended Channel Interpretations" 5.3.1.1
+ * of ISO 18004.
+ *
+ * @author Sean Owen
+ */
+public final class CharacterSetECI extends ECI {
+
+  private static Hashtable VALUE_TO_ECI;
+  private static Hashtable NAME_TO_ECI;
+
+  private static void initialize() {
+    VALUE_TO_ECI = new Hashtable(29);
+    NAME_TO_ECI = new Hashtable(29);
+    // TODO figure out if these values are even right!
+    addCharacterSet(0, "Cp437");
+    addCharacterSet(1, new String[] {"ISO8859_1", "ISO-8859-1"});
+    addCharacterSet(2, "Cp437");
+    addCharacterSet(3, new String[] {"ISO8859_1", "ISO-8859-1"});
+    addCharacterSet(4, "ISO8859_2");
+    addCharacterSet(5, "ISO8859_3");
+    addCharacterSet(6, "ISO8859_4");
+    addCharacterSet(7, "ISO8859_5");
+    addCharacterSet(8, "ISO8859_6");
+    addCharacterSet(9, "ISO8859_7");
+    addCharacterSet(10, "ISO8859_8");
+    addCharacterSet(11, "ISO8859_9");
+    addCharacterSet(12, "ISO8859_10");
+    addCharacterSet(13, "ISO8859_11");
+    addCharacterSet(15, "ISO8859_13");
+    addCharacterSet(16, "ISO8859_14");
+    addCharacterSet(17, "ISO8859_15");
+    addCharacterSet(18, "ISO8859_16");
+    addCharacterSet(20, new String[] {"SJIS", "Shift_JIS"});
+  }
+
+  private final String encodingName;
+
+  private CharacterSetECI(int value, String encodingName) {
+    super(value);
+    this.encodingName = encodingName;
+  }
+
+  public String getEncodingName() {
+    return encodingName;
+  }
+
+  private static void addCharacterSet(int value, String encodingName) {
+    CharacterSetECI eci = new CharacterSetECI(value, encodingName);
+    VALUE_TO_ECI.put(new Integer(value), eci); // can't use valueOf
+    NAME_TO_ECI.put(encodingName, eci);
+  }
+
+  private static void addCharacterSet(int value, String[] encodingNames) {
+    CharacterSetECI eci = new CharacterSetECI(value, encodingNames[0]);
+    VALUE_TO_ECI.put(new Integer(value), eci); // can't use valueOf
+    for (int i = 0; i < encodingNames.length; i++) {
+      NAME_TO_ECI.put(encodingNames[i], eci);
+    }
+  }
+
+  /**
+   * @param value character set ECI value
+   * @return CharacterSetECI representing ECI of given value, or null if it is legal but
+   *   unsupported
+   * @throws IllegalArgumentException if ECI value is invalid
+   */
+  public static CharacterSetECI getCharacterSetECIByValue(int value) {
+    if (VALUE_TO_ECI == null) {
+      initialize();
+    }
+    if (value < 0 || value >= 900) {
+      throw new IllegalArgumentException("Bad ECI value: " + value);
+    }
+    return (CharacterSetECI) VALUE_TO_ECI.get(new Integer(value));
+  }
+
+  /**
+   * @param name character set ECI encoding name
+   * @return CharacterSetECI representing ECI for character encoding, or null if it is legal
+   *   but unsupported
+   */
+  public static CharacterSetECI getCharacterSetECIByName(String name) {
+    if (NAME_TO_ECI == null) {
+      initialize();
+    }
+    return (CharacterSetECI) NAME_TO_ECI.get(name);
+  }
+
+}
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