1 files changed, 145 insertions, 0 deletions
diff --git a/tests/src/com/android/gallery3d/exif/Util.java b/tests/src/com/android/gallery3d/exif/Util.java
new file mode 100644
index 000000000..0e51fd7bf
--- /dev/null
+++ b/tests/src/com/android/gallery3d/exif/Util.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * 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.android.gallery3d.exif;
+
+import java.io.Closeable;
+
+class Util {
+    public static boolean equals(Object a, Object b) {
+        return (a == b) || (a == null ? false : a.equals(b));
+    }
+
+    public static void closeSilently(Closeable c) {
+        if (c == null) return;
+        try {
+            c.close();
+        } catch (Throwable t) {
+            // do nothing
+        }
+    }
+
+    /**
+     * Tags that are not defined in the spec.
+     */
+    static final short TAG_XP_TITLE = (short) 0x9c9b;
+    static final short TAG_XP_COMMENT = (short) 0x9c9c;
+    static final short TAG_XP_AUTHOR = (short) 0x9c9d;
+    static final short TAG_XP_KEYWORDS = (short) 0x9c9e;
+    static final short TAG_XP_SUBJECT = (short) 0x9c9f;
+
+    private static String tagUndefinedTypeValueToString(ExifTag tag) {
+        StringBuilder sbuilder = new StringBuilder();
+        byte[] buf = new byte[tag.getComponentCount()];
+        tag.getBytes(buf);
+        switch (tag.getTagId()) {
+            case ExifTag.TAG_COMPONENTS_CONFIGURATION:
+                for(int i = 0, n = tag.getComponentCount(); i < n; i++) {
+                    if(i != 0) sbuilder.append(" ");
+                    sbuilder.append(buf[i]);
+                }
+                break;
+            default:
+                if (buf.length == 1) {
+                    sbuilder.append(buf[0]);
+                } else {
+                    for (int i = 0, n = buf.length; i < n; i++) {
+                        byte code = buf[i];
+                        if (code == 0) continue;
+                        if (code > 31 && code < 127) {
+                            sbuilder.append((char) code);
+                        } else {
+                            sbuilder.append('.');
+                        }
+                    }
+                }
+        }
+        return sbuilder.toString();
+    }
+
+    /**
+     * Returns a string representation of the value of this tag.
+     */
+    public static String tagValueToString(ExifTag tag) {
+        StringBuilder sbuilder = new StringBuilder();
+        short id = tag.getTagId();
+        switch (tag.getDataType()) {
+            case ExifTag.TYPE_UNDEFINED:
+                sbuilder.append(tagUndefinedTypeValueToString(tag));
+                break;
+            case ExifTag.TYPE_UNSIGNED_BYTE:
+                if (id == ExifTag.TAG_MAKER_NOTE || id == TAG_XP_TITLE ||
+                        id == TAG_XP_COMMENT || id == TAG_XP_AUTHOR ||
+                        id == TAG_XP_KEYWORDS || id == TAG_XP_SUBJECT) {
+                    sbuilder.append(tagUndefinedTypeValueToString(tag));
+                } else {
+                    byte[] buf = new byte[tag.getComponentCount()];
+                    tag.getBytes(buf);
+                    for(int i = 0, n = tag.getComponentCount(); i < n; i++) {
+                        if(i != 0) sbuilder.append(" ");
+                        sbuilder.append(buf[i]);
+                    }
+                }
+                break;
+            case ExifTag.TYPE_ASCII:
+                byte[] buf = tag.getStringByte();
+                for (int i = 0, n = buf.length; i < n; i++) {
+                    byte code = buf[i];
+                    if (code == 0) {
+                        // Treat some tag as undefined type data.
+                        if (id == ExifTag.TAG_COPYRIGHT || id == ExifTag.TAG_GPS_DATE_STAMP) {
+                            continue;
+                        } else {
+                            break;
+                        }
+                    }
+                    if (code > 31 && code < 127) {
+                        sbuilder.append((char) code);
+                    } else {
+                        sbuilder.append('.');
+                    }
+                }
+                break;
+            case ExifTag.TYPE_UNSIGNED_LONG:
+                for(int i = 0, n = tag.getComponentCount(); i < n; i++) {
+                    if(i != 0) sbuilder.append(" ");
+                    sbuilder.append(tag.getValueAt(i));
+                }
+                break;
+            case ExifTag.TYPE_RATIONAL:
+            case ExifTag.TYPE_UNSIGNED_RATIONAL:
+                for(int i = 0, n = tag.getComponentCount(); i < n; i++) {
+                    Rational r = tag.getRational(i);
+                    if(i != 0) sbuilder.append(" ");
+                    sbuilder.append(r.getNominator()).append("/").append(r.getDenominator());
+                }
+                break;
+            case ExifTag.TYPE_UNSIGNED_SHORT:
+                for(int i = 0, n = tag.getComponentCount(); i < n; i++) {
+                    if(i != 0) sbuilder.append(" ");
+                    sbuilder.append((int) tag.getValueAt(i));
+                }
+                break;
+            case ExifTag.TYPE_LONG:
+                for(int i = 0, n = tag.getComponentCount(); i < n; i++) {
+                    if(i != 0) sbuilder.append(" ");
+                    sbuilder.append((int) tag.getValueAt(i));
+                }
+                break;
+        }
+        return sbuilder.toString();
+    }
+}