dexlib2/src/main/java/org/jf/dexlib2/dexbacked/raw/StringIdItem.java

/*
 * Copyright 2013, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jf.dexlib2.dexbacked.raw;

import org.jf.dexlib2.dexbacked.DexBackedDexFile;
import org.jf.dexlib2.util.AnnotatedBytes;
import org.jf.util.StringUtils;

import javax.annotation.Nonnull;

public class StringIdItem {
    public static final int ITEM_SIZE = 4;

    public static Section getSection() {
        return new Section() {
            @Override
            public void annotateSection(@Nonnull AnnotatedBytes out, @Nonnull DexBackedDexFile dexFile, int length) {
                int startOffset = out.getCursor();
                if (length > 0) {
                    out.annotate(0, "-----------------------------");
                    out.annotate(0, "string_id_item section");
                    out.annotate(0, "-----------------------------");
                    out.annotate(0, "");

                    for (int i=0; i<length; i++) {
                        out.annotate(0, "[%d] string_id_item", i);
                        out.indent();
                        annotateString(out, dexFile, i, startOffset + i * ITEM_SIZE);
                        out.deindent();
                    }
                }
            }
        };
    }

    private static void annotateString(@Nonnull AnnotatedBytes out, @Nonnull DexBackedDexFile dexFile, int index,
                                       int offset) {
        int stringDataOffset = dexFile.readSmallUint(offset);
        try {
            String stringValue = dexFile.getString(index);
            out.annotate(4, "string_data_item[0x%x]: \"%s\"", stringDataOffset, StringUtils.escapeString(stringValue));
            return;
        } catch (Exception ex) {
            System.err.print("Error while resolving string value at index: ");
            System.err.print(index);
            ex.printStackTrace(System.err);
        }

        out.annotate(4, "string_id_item[0x%x]", stringDataOffset);
    }
}