| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2014 Ericsson |
| 3 | * |
| 4 | * All rights reserved. This program and the accompanying materials are made |
| 5 | * available under the terms of the Eclipse Public License v1.0 which |
| 6 | * accompanies this distribution, and is available at |
| 7 | * http://www.eclipse.org/legal/epl-v10.html |
| 8 | * |
| 9 | * Contributors: |
| 10 | * Matthew Khouzam - Initial API and implementation |
| 11 | *******************************************************************************/ |
| 12 | |
| 13 | package org.eclipse.linuxtools.internal.ctf.core.event.types; |
| 14 | |
| 15 | import java.util.Arrays; |
| 16 | import java.util.List; |
| 17 | |
| 18 | import org.eclipse.jdt.annotation.NonNull; |
| 19 | import org.eclipse.jdt.annotation.NonNullByDefault; |
| 20 | import org.eclipse.jdt.annotation.Nullable; |
| 21 | import org.eclipse.linuxtools.ctf.core.event.scope.IDefinitionScope; |
| 22 | import org.eclipse.linuxtools.ctf.core.event.types.AbstractArrayDefinition; |
| 23 | import org.eclipse.linuxtools.ctf.core.event.types.CompoundDeclaration; |
| 24 | import org.eclipse.linuxtools.ctf.core.event.types.Definition; |
| 25 | import org.eclipse.linuxtools.ctf.core.event.types.IntegerDeclaration; |
| 26 | import org.eclipse.linuxtools.ctf.core.event.types.IntegerDefinition; |
| 27 | |
| 28 | import com.google.common.collect.ImmutableList; |
| 29 | |
| 30 | /** |
| 31 | * A fixed length string definition |
| 32 | * |
| 33 | * @author Matthew Khouzam |
| 34 | * @since 3.1 |
| 35 | */ |
| 36 | @NonNullByDefault |
| 37 | public final class ByteArrayDefinition extends AbstractArrayDefinition { |
| 38 | |
| 39 | private final byte[] fContent; |
| 40 | private transient @Nullable List<Definition> fDefs; |
| 41 | |
| 42 | /** |
| 43 | * An fixed length string declaration, it's created by sequence or array |
| 44 | * defintions |
| 45 | * |
| 46 | * @param declaration |
| 47 | * the declaration |
| 48 | * @param definitionScope |
| 49 | * the definition scope |
| 50 | * @param fieldName |
| 51 | * the field name |
| 52 | * @param content |
| 53 | * the string content |
| 54 | */ |
| 55 | public ByteArrayDefinition(CompoundDeclaration declaration, |
| 56 | @Nullable IDefinitionScope definitionScope, |
| 57 | String fieldName, |
| 58 | byte[] content) { |
| 59 | super(declaration, definitionScope, fieldName); |
| 60 | fContent = content; |
| 61 | |
| 62 | } |
| 63 | |
| 64 | @Override |
| 65 | public synchronized List<Definition> getDefinitions() { |
| 66 | List<Definition> defs = fDefs; |
| 67 | if (defs == null) { |
| 68 | ImmutableList.Builder<Definition> builder = new ImmutableList.Builder<>(); |
| 69 | for (int i = 0; i < fContent.length; i++) { |
| 70 | IntegerDeclaration charDecl = IntegerDeclaration.UINT_8_DECL; |
| 71 | String fieldName = getFieldName() + '[' + i + ']'; |
| 72 | byte fieldValue = fContent[i]; |
| 73 | builder.add(new IntegerDefinition(charDecl, getDefinitionScope(), fieldName, fieldValue)); |
| 74 | } |
| 75 | @SuppressWarnings("null") |
| 76 | @NonNull List<Definition> ret = builder.build(); |
| 77 | fDefs = ret; |
| 78 | return ret; |
| 79 | } |
| 80 | |
| 81 | return defs; |
| 82 | } |
| 83 | |
| 84 | @Override |
| 85 | public String toString() { |
| 86 | /* |
| 87 | * the string is a byte array and may contain more than the string plus |
| 88 | * a null char, this will truncate it back to a null char |
| 89 | */ |
| 90 | int pos = -1; |
| 91 | for (int i = 0; i < fContent.length; i++) { |
| 92 | if (fContent[i] == 0) { |
| 93 | pos = i; |
| 94 | break; |
| 95 | } |
| 96 | } |
| 97 | byte[] bytes = (pos != -1) ? (Arrays.copyOf(fContent, pos)) : fContent; |
| 98 | return new String(bytes); |
| 99 | } |
| 100 | } |