001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one or more
003 *  contributor license agreements.  See the NOTICE file distributed with
004 *  this work for additional information regarding copyright ownership.
005 *  The ASF licenses this file to You under the Apache License, Version 2.0
006 *  (the "License"); you may not use this file except in compliance with
007 *  the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.commons.compress.harmony.unpack200;
018
019import java.io.IOException;
020import java.io.InputStream;
021import java.util.ArrayList;
022import java.util.Arrays;
023import java.util.HashMap;
024import java.util.Map;
025
026import org.apache.commons.compress.harmony.pack200.Codec;
027import org.apache.commons.compress.harmony.pack200.Pack200Exception;
028import org.apache.commons.compress.harmony.unpack200.bytecode.CPClass;
029import org.apache.commons.compress.harmony.unpack200.bytecode.CPDouble;
030import org.apache.commons.compress.harmony.unpack200.bytecode.CPFieldRef;
031import org.apache.commons.compress.harmony.unpack200.bytecode.CPFloat;
032import org.apache.commons.compress.harmony.unpack200.bytecode.CPInteger;
033import org.apache.commons.compress.harmony.unpack200.bytecode.CPInterfaceMethodRef;
034import org.apache.commons.compress.harmony.unpack200.bytecode.CPLong;
035import org.apache.commons.compress.harmony.unpack200.bytecode.CPMethodRef;
036import org.apache.commons.compress.harmony.unpack200.bytecode.CPNameAndType;
037import org.apache.commons.compress.harmony.unpack200.bytecode.CPString;
038import org.apache.commons.compress.harmony.unpack200.bytecode.CPUTF8;
039
040/**
041 * Constant Pool bands
042 */
043public class CpBands extends BandSet {
044
045    private final SegmentConstantPool pool = new SegmentConstantPool(this);
046
047    private String[] cpClass;
048
049    private int[] cpClassInts;
050    private int[] cpDescriptorNameInts;
051    private int[] cpDescriptorTypeInts;
052    private String[] cpDescriptor;
053    private double[] cpDouble;
054    private String[] cpFieldClass;
055    private String[] cpFieldDescriptor;
056    private int[] cpFieldClassInts;
057    private int[] cpFieldDescriptorInts;
058    private float[] cpFloat;
059    private String[] cpIMethodClass;
060    private String[] cpIMethodDescriptor;
061    private int[] cpIMethodClassInts;
062    private int[] cpIMethodDescriptorInts;
063    private int[] cpInt;
064    private long[] cpLong;
065    private String[] cpMethodClass;
066    private String[] cpMethodDescriptor;
067    private int[] cpMethodClassInts;
068    private int[] cpMethodDescriptorInts;
069    private String[] cpSignature;
070    private int[] cpSignatureInts;
071    private String[] cpString;
072    private int[] cpStringInts;
073    private String[] cpUTF8;
074    private final Map<String, CPUTF8> stringsToCPUTF8 = new HashMap<>();
075
076    private final Map<String, CPString> stringsToCPStrings = new HashMap<>();
077    private final Map<Long, CPLong> longsToCPLongs = new HashMap<>();
078    private final Map<Integer, CPInteger> integersToCPIntegers = new HashMap<>();
079    private final Map<Float, CPFloat> floatsToCPFloats = new HashMap<>();
080    private final Map<String, CPClass> stringsToCPClass = new HashMap<>();
081    private final Map<Double, CPDouble> doublesToCPDoubles = new HashMap<>();
082    private final Map<String, CPNameAndType> descriptorsToCPNameAndTypes = new HashMap<>();
083    private Map<String, Integer> mapClass;
084
085    private Map<String, Integer> mapDescriptor;
086    private Map<String, Integer> mapUTF8;
087    // TODO: Not used
088    private Map<String, Integer> mapSignature;
089
090    private int intOffset;
091
092    private int floatOffset;
093    private int longOffset;
094    private int doubleOffset;
095    private int stringOffset;
096    private int classOffset;
097    private int signatureOffset;
098    private int descrOffset;
099    private int fieldOffset;
100    private int methodOffset;
101    private int imethodOffset;
102    public CpBands(final Segment segment) {
103        super(segment);
104    }
105
106    public CPClass cpClassValue(final int index) {
107        final String string = cpClass[index];
108        final int utf8Index = cpClassInts[index];
109        final int globalIndex = classOffset + index;
110        return stringsToCPClass.computeIfAbsent(string, k -> new CPClass(cpUTF8Value(utf8Index), globalIndex));
111    }
112
113    public CPClass cpClassValue(final String string) {
114        CPClass cpString = stringsToCPClass.get(string);
115        if (cpString == null) {
116            final Integer index = mapClass.get(string);
117            if (index != null) {
118                return cpClassValue(index.intValue());
119            }
120            cpString = new CPClass(cpUTF8Value(string, false), -1);
121            stringsToCPClass.put(string, cpString);
122        }
123        return cpString;
124    }
125
126    public CPDouble cpDoubleValue(final int index) {
127        final Double dbl = Double.valueOf(cpDouble[index]);
128        CPDouble cpDouble = doublesToCPDoubles.get(dbl);
129        if (cpDouble == null) {
130            cpDouble = new CPDouble(dbl, index + doubleOffset);
131            doublesToCPDoubles.put(dbl, cpDouble);
132        }
133        return cpDouble;
134    }
135
136    public CPFieldRef cpFieldValue(final int index) {
137        return new CPFieldRef(cpClassValue(cpFieldClassInts[index]), cpNameAndTypeValue(cpFieldDescriptorInts[index]),
138            index + fieldOffset);
139    }
140
141    public CPFloat cpFloatValue(final int index) {
142        final Float f = Float.valueOf(cpFloat[index]);
143        CPFloat cpFloat = floatsToCPFloats.get(f);
144        if (cpFloat == null) {
145            cpFloat = new CPFloat(f, index + floatOffset);
146            floatsToCPFloats.put(f, cpFloat);
147        }
148        return cpFloat;
149    }
150
151    public CPInterfaceMethodRef cpIMethodValue(final int index) {
152        return new CPInterfaceMethodRef(cpClassValue(cpIMethodClassInts[index]),
153            cpNameAndTypeValue(cpIMethodDescriptorInts[index]), index + imethodOffset);
154    }
155
156    public CPInteger cpIntegerValue(final int index) {
157        final Integer i = Integer.valueOf(cpInt[index]);
158        CPInteger cpInteger = integersToCPIntegers.get(i);
159        if (cpInteger == null) {
160            cpInteger = new CPInteger(i, index + intOffset);
161            integersToCPIntegers.put(i, cpInteger);
162        }
163        return cpInteger;
164    }
165
166    public CPLong cpLongValue(final int index) {
167        final Long l = Long.valueOf(cpLong[index]);
168        CPLong cpLong = longsToCPLongs.get(l);
169        if (cpLong == null) {
170            cpLong = new CPLong(l, index + longOffset);
171            longsToCPLongs.put(l, cpLong);
172        }
173        return cpLong;
174    }
175
176    public CPMethodRef cpMethodValue(final int index) {
177        return new CPMethodRef(cpClassValue(cpMethodClassInts[index]),
178            cpNameAndTypeValue(cpMethodDescriptorInts[index]), index + methodOffset);
179    }
180
181    public CPNameAndType cpNameAndTypeValue(final int index) {
182        final String descriptor = cpDescriptor[index];
183        CPNameAndType cpNameAndType = descriptorsToCPNameAndTypes.get(descriptor);
184        if (cpNameAndType == null) {
185            final int nameIndex = cpDescriptorNameInts[index];
186            final int descriptorIndex = cpDescriptorTypeInts[index];
187
188            final CPUTF8 name = cpUTF8Value(nameIndex);
189            final CPUTF8 descriptorU = cpSignatureValue(descriptorIndex);
190            cpNameAndType = new CPNameAndType(name, descriptorU, index + descrOffset);
191            descriptorsToCPNameAndTypes.put(descriptor, cpNameAndType);
192        }
193        return cpNameAndType;
194    }
195
196    public CPNameAndType cpNameAndTypeValue(final String descriptor) {
197        CPNameAndType cpNameAndType = descriptorsToCPNameAndTypes.get(descriptor);
198        if (cpNameAndType == null) {
199            final Integer index = mapDescriptor.get(descriptor);
200            if (index != null) {
201                return cpNameAndTypeValue(index.intValue());
202            }
203            final int colon = descriptor.indexOf(':');
204            final String nameString = descriptor.substring(0, colon);
205            final String descriptorString = descriptor.substring(colon + 1);
206
207            final CPUTF8 name = cpUTF8Value(nameString, true);
208            final CPUTF8 descriptorU = cpUTF8Value(descriptorString, true);
209            cpNameAndType = new CPNameAndType(name, descriptorU, -1 + descrOffset);
210            descriptorsToCPNameAndTypes.put(descriptor, cpNameAndType);
211        }
212        return cpNameAndType;
213    }
214
215    public CPUTF8 cpSignatureValue(final int index) {
216        int globalIndex;
217        if (cpSignatureInts[index] != -1) {
218            globalIndex = cpSignatureInts[index];
219        } else {
220            globalIndex = index + signatureOffset;
221        }
222        final String string = cpSignature[index];
223        CPUTF8 cpUTF8 = stringsToCPUTF8.get(string);
224        if (cpUTF8 == null) {
225            cpUTF8 = new CPUTF8(string, globalIndex);
226            stringsToCPUTF8.put(string, cpUTF8);
227        }
228        return cpUTF8;
229    }
230
231    public CPString cpStringValue(final int index) {
232        final String string = cpString[index];
233        final int utf8Index = cpStringInts[index];
234        final int globalIndex = stringOffset + index;
235        CPString cpString = stringsToCPStrings.get(string);
236        if (cpString == null) {
237            cpString = new CPString(cpUTF8Value(utf8Index), globalIndex);
238            stringsToCPStrings.put(string, cpString);
239        }
240        return cpString;
241    }
242
243    public CPUTF8 cpUTF8Value(final int index) {
244        final String string = cpUTF8[index];
245        CPUTF8 cputf8 = stringsToCPUTF8.get(string);
246        if (cputf8 == null) {
247            cputf8 = new CPUTF8(string, index);
248            stringsToCPUTF8.put(string, cputf8);
249        } else if (cputf8.getGlobalIndex() > index) {
250            cputf8.setGlobalIndex(index);
251        }
252        return cputf8;
253    }
254
255    public CPUTF8 cpUTF8Value(final String string) {
256        return cpUTF8Value(string, true);
257    }
258
259    public CPUTF8 cpUTF8Value(final String string, final boolean searchForIndex) {
260        CPUTF8 cputf8 = stringsToCPUTF8.get(string);
261        if (cputf8 == null) {
262            Integer index = null;
263            if (searchForIndex) {
264                index = mapUTF8.get(string);
265            }
266            if (index != null) {
267                return cpUTF8Value(index.intValue());
268            }
269            if (searchForIndex) {
270                index = mapSignature.get(string);
271            }
272            if (index != null) {
273                return cpSignatureValue(index.intValue());
274            }
275            cputf8 = new CPUTF8(string, -1);
276            stringsToCPUTF8.put(string, cputf8);
277        }
278        return cputf8;
279    }
280
281    public SegmentConstantPool getConstantPool() {
282        return pool;
283    }
284
285    public String[] getCpClass() {
286        return cpClass;
287    }
288
289    public String[] getCpDescriptor() {
290        return cpDescriptor;
291    }
292
293    public int[] getCpDescriptorNameInts() {
294        return cpDescriptorNameInts;
295    }
296
297    public int[] getCpDescriptorTypeInts() {
298        return cpDescriptorTypeInts;
299    }
300
301    public String[] getCpFieldClass() {
302        return cpFieldClass;
303    }
304
305    public String[] getCpIMethodClass() {
306        return cpIMethodClass;
307    }
308
309    public int[] getCpInt() {
310        return cpInt;
311    }
312
313    public long[] getCpLong() {
314        return cpLong;
315    }
316
317    public String[] getCpMethodClass() {
318        return cpMethodClass;
319    }
320
321    public String[] getCpMethodDescriptor() {
322        return cpMethodDescriptor;
323    }
324
325    public String[] getCpSignature() {
326        return cpSignature;
327    }
328
329    public String[] getCpUTF8() {
330        return cpUTF8;
331    }
332
333    /**
334     * Parses the constant pool class names, using {@link #cpClassCount} to populate {@link #cpClass} from
335     * {@link #cpUTF8}.
336     *
337     * @param in the input stream to read from
338     * @throws IOException if a problem occurs during reading from the underlying stream
339     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
340     */
341    private void parseCpClass(final InputStream in) throws IOException, Pack200Exception {
342        final int cpClassCount = header.getCpClassCount();
343        cpClassInts = decodeBandInt("cp_Class", in, Codec.UDELTA5, cpClassCount);
344        cpClass = new String[cpClassCount];
345        mapClass = new HashMap<>(cpClassCount);
346        for (int i = 0; i < cpClassCount; i++) {
347            cpClass[i] = cpUTF8[cpClassInts[i]];
348            mapClass.put(cpClass[i], Integer.valueOf(i));
349        }
350    }
351
352    /**
353     * Parses the constant pool descriptor definitions, using {@link #cpDescriptorCount} to populate
354     * {@link #cpDescriptor}. For ease of use, the cpDescriptor is stored as a string of the form <i>name:type</i>,
355     * largely to make it easier for representing field and method descriptors (e.g.
356     * {@code out:java.lang.PrintStream}) in a way that is compatible with passing String arrays.
357     *
358     * @param in the input stream to read from
359     * @throws IOException if a problem occurs during reading from the underlying stream
360     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
361     */
362    private void parseCpDescriptor(final InputStream in) throws IOException, Pack200Exception {
363        final int cpDescriptorCount = header.getCpDescriptorCount();
364        cpDescriptorNameInts = decodeBandInt("cp_Descr_name", in, Codec.DELTA5, cpDescriptorCount);
365        cpDescriptorTypeInts = decodeBandInt("cp_Descr_type", in, Codec.UDELTA5, cpDescriptorCount);
366        final String[] cpDescriptorNames = getReferences(cpDescriptorNameInts, cpUTF8);
367        final String[] cpDescriptorTypes = getReferences(cpDescriptorTypeInts, cpSignature);
368        cpDescriptor = new String[cpDescriptorCount];
369        mapDescriptor = new HashMap<>(cpDescriptorCount);
370        for (int i = 0; i < cpDescriptorCount; i++) {
371            cpDescriptor[i] = cpDescriptorNames[i] + ":" + cpDescriptorTypes[i]; //$NON-NLS-1$
372            mapDescriptor.put(cpDescriptor[i], Integer.valueOf(i));
373        }
374    }
375
376    private void parseCpDouble(final InputStream in) throws IOException, Pack200Exception {
377        final int cpDoubleCount = header.getCpDoubleCount();
378        final long[] band = parseFlags("cp_Double", in, cpDoubleCount, Codec.UDELTA5, Codec.DELTA5);
379        cpDouble = new double[band.length];
380        Arrays.setAll(cpDouble, i -> Double.longBitsToDouble(band[i]));
381    }
382
383    /**
384     * Parses the constant pool field definitions, using {@link #cpFieldCount} to populate {@link #cpFieldClass} and
385     * {@link #cpFieldDescriptor}.
386     *
387     * @param in the input stream to read from
388     * @throws IOException if a problem occurs during reading from the underlying stream
389     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
390     */
391    private void parseCpField(final InputStream in) throws IOException, Pack200Exception {
392        final int cpFieldCount = header.getCpFieldCount();
393        cpFieldClassInts = decodeBandInt("cp_Field_class", in, Codec.DELTA5, cpFieldCount);
394        cpFieldDescriptorInts = decodeBandInt("cp_Field_desc", in, Codec.UDELTA5, cpFieldCount);
395        cpFieldClass = new String[cpFieldCount];
396        cpFieldDescriptor = new String[cpFieldCount];
397        for (int i = 0; i < cpFieldCount; i++) {
398            cpFieldClass[i] = cpClass[cpFieldClassInts[i]];
399            cpFieldDescriptor[i] = cpDescriptor[cpFieldDescriptorInts[i]];
400        }
401    }
402
403    private void parseCpFloat(final InputStream in) throws IOException, Pack200Exception {
404        final int cpFloatCount = header.getCpFloatCount();
405        cpFloat = new float[cpFloatCount];
406        final int[] floatBits = decodeBandInt("cp_Float", in, Codec.UDELTA5, cpFloatCount);
407        for (int i = 0; i < cpFloatCount; i++) {
408            cpFloat[i] = Float.intBitsToFloat(floatBits[i]);
409        }
410    }
411
412    /**
413     * Parses the constant pool interface method definitions, using {@link #cpIMethodCount} to populate
414     * {@link #cpIMethodClass} and {@link #cpIMethodDescriptor}.
415     *
416     * @param in the input stream to read from
417     * @throws IOException if a problem occurs during reading from the underlying stream
418     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
419     */
420    private void parseCpIMethod(final InputStream in) throws IOException, Pack200Exception {
421        final int cpIMethodCount = header.getCpIMethodCount();
422        cpIMethodClassInts = decodeBandInt("cp_Imethod_class", in, Codec.DELTA5, cpIMethodCount);
423        cpIMethodDescriptorInts = decodeBandInt("cp_Imethod_desc", in, Codec.UDELTA5, cpIMethodCount);
424        cpIMethodClass = new String[cpIMethodCount];
425        cpIMethodDescriptor = new String[cpIMethodCount];
426        for (int i = 0; i < cpIMethodCount; i++) {
427            cpIMethodClass[i] = cpClass[cpIMethodClassInts[i]];
428            cpIMethodDescriptor[i] = cpDescriptor[cpIMethodDescriptorInts[i]];
429        }
430    }
431
432    private void parseCpInt(final InputStream in) throws IOException, Pack200Exception {
433        final int cpIntCount = header.getCpIntCount();
434        cpInt = decodeBandInt("cpInt", in, Codec.UDELTA5, cpIntCount);
435    }
436
437    private void parseCpLong(final InputStream in) throws IOException, Pack200Exception {
438        final int cpLongCount = header.getCpLongCount();
439        cpLong = parseFlags("cp_Long", in, cpLongCount, Codec.UDELTA5, Codec.DELTA5);
440    }
441
442    /**
443     * Parses the constant pool method definitions, using {@link #cpMethodCount} to populate {@link #cpMethodClass} and
444     * {@link #cpMethodDescriptor}.
445     *
446     * @param in the input stream to read from
447     * @throws IOException if a problem occurs during reading from the underlying stream
448     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
449     */
450    private void parseCpMethod(final InputStream in) throws IOException, Pack200Exception {
451        final int cpMethodCount = header.getCpMethodCount();
452        cpMethodClassInts = decodeBandInt("cp_Method_class", in, Codec.DELTA5, cpMethodCount);
453        cpMethodDescriptorInts = decodeBandInt("cp_Method_desc", in, Codec.UDELTA5, cpMethodCount);
454        cpMethodClass = new String[cpMethodCount];
455        cpMethodDescriptor = new String[cpMethodCount];
456        for (int i = 0; i < cpMethodCount; i++) {
457            cpMethodClass[i] = cpClass[cpMethodClassInts[i]];
458            cpMethodDescriptor[i] = cpDescriptor[cpMethodDescriptorInts[i]];
459        }
460    }
461
462    /**
463     * Parses the constant pool signature classes, using {@link #cpSignatureCount} to populate {@link #cpSignature}. A
464     * signature form is akin to the bytecode representation of a class; Z for boolean, I for int, [ for array etc.
465     * However, although classes are started with L, the classname does not follow the form; instead, there is a
466     * separate array of classes. So an array corresponding to {@code public static void main(String args[])} has a
467     * form of {@code [L(V)} and a classes array of {@code [java.lang.String]}. The {@link #cpSignature} is a
468     * string representation identical to the bytecode equivalent {@code [Ljava/lang/String;(V)} TODO Check that
469     * the form is as above and update other types e.g. J
470     *
471     * @param in the input stream to read from
472     * @throws IOException if a problem occurs during reading from the underlying stream
473     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
474     */
475    private void parseCpSignature(final InputStream in) throws IOException, Pack200Exception {
476        final int cpSignatureCount = header.getCpSignatureCount();
477        cpSignatureInts = decodeBandInt("cp_Signature_form", in, Codec.DELTA5, cpSignatureCount);
478        final String[] cpSignatureForm = getReferences(cpSignatureInts, cpUTF8);
479        cpSignature = new String[cpSignatureCount];
480        mapSignature = new HashMap<>();
481        int lCount = 0;
482        for (int i = 0; i < cpSignatureCount; i++) {
483            final String form = cpSignatureForm[i];
484            final char[] chars = form.toCharArray();
485            for (final char element : chars) {
486                if (element == 'L') {
487                    cpSignatureInts[i] = -1;
488                    lCount++;
489                }
490            }
491        }
492        final String[] cpSignatureClasses = parseReferences("cp_Signature_classes", in, Codec.UDELTA5, lCount, cpClass);
493        int index = 0;
494        for (int i = 0; i < cpSignatureCount; i++) {
495            final String form = cpSignatureForm[i];
496            final int len = form.length();
497            final StringBuilder signature = new StringBuilder(64);
498            final ArrayList<String> list = new ArrayList<>();
499            for (int j = 0; j < len; j++) {
500                final char c = form.charAt(j);
501                signature.append(c);
502                if (c == 'L') {
503                    final String className = cpSignatureClasses[index];
504                    list.add(className);
505                    signature.append(className);
506                    index++;
507                }
508            }
509            cpSignature[i] = signature.toString();
510            mapSignature.put(signature.toString(), Integer.valueOf(i));
511        }
512//        for (int i = 0; i < cpSignatureInts.length; i++) {
513//            if (cpSignatureInts[i] == -1) {
514//                cpSignatureInts[i] = search(cpUTF8, cpSignature[i]);
515//            }
516//        }
517    }
518
519    /**
520     * Parses the constant pool strings, using {@link #cpStringCount} to populate {@link #cpString} from indexes into
521     * {@link #cpUTF8}.
522     *
523     * @param in the input stream to read from
524     * @throws IOException if a problem occurs during reading from the underlying stream
525     * @throws Pack200Exception if a problem occurs with an unexpected value or unsupported codec
526     */
527    private void parseCpString(final InputStream in) throws IOException, Pack200Exception {
528        final int cpStringCount = header.getCpStringCount();
529        cpStringInts = decodeBandInt("cp_String", in, Codec.UDELTA5, cpStringCount);
530        cpString = new String[cpStringCount];
531        Arrays.setAll(cpString, i -> cpUTF8[cpStringInts[i]]);
532    }
533
534    private void parseCpUtf8(final InputStream in) throws IOException, Pack200Exception {
535        final int cpUTF8Count = header.getCpUTF8Count();
536        cpUTF8 = new String[cpUTF8Count];
537        mapUTF8 = new HashMap<>(cpUTF8Count + 1);
538        cpUTF8[0] = ""; //$NON-NLS-1$
539        mapUTF8.put("", Integer.valueOf(0));
540        final int[] prefix = decodeBandInt("cpUTF8Prefix", in, Codec.DELTA5, cpUTF8Count - 2);
541        int charCount = 0;
542        int bigSuffixCount = 0;
543        final int[] suffix = decodeBandInt("cpUTF8Suffix", in, Codec.UNSIGNED5, cpUTF8Count - 1);
544
545        for (final int element : suffix) {
546            if (element == 0) {
547                bigSuffixCount++;
548            } else {
549                charCount += element;
550            }
551        }
552        final char[] data = new char[charCount];
553        final int[] dataBand = decodeBandInt("cp_Utf8_chars", in, Codec.CHAR3, charCount);
554        for (int i = 0; i < data.length; i++) {
555            data[i] = (char) dataBand[i];
556        }
557
558        // Read in the big suffix data
559        final int[] bigSuffixCounts = decodeBandInt("cp_Utf8_big_suffix", in, Codec.DELTA5, bigSuffixCount);
560        final int[][] bigSuffixDataBand = new int[bigSuffixCount][];
561        for (int i = 0; i < bigSuffixDataBand.length; i++) {
562            bigSuffixDataBand[i] = decodeBandInt("cp_Utf8_big_chars " + i, in, Codec.DELTA5, bigSuffixCounts[i]);
563        }
564
565        // Convert big suffix data to characters
566        final char[][] bigSuffixData = new char[bigSuffixCount][];
567        for (int i = 0; i < bigSuffixDataBand.length; i++) {
568            bigSuffixData[i] = new char[bigSuffixDataBand[i].length];
569            for (int j = 0; j < bigSuffixDataBand[i].length; j++) {
570                bigSuffixData[i][j] = (char) bigSuffixDataBand[i][j];
571            }
572        }
573        // Go through the strings
574        charCount = 0;
575        bigSuffixCount = 0;
576        for (int i = 1; i < cpUTF8Count; i++) {
577            final String lastString = cpUTF8[i - 1];
578            if (suffix[i - 1] == 0) {
579                // The big suffix stuff hasn't been tested, and I'll be
580                // surprised if it works first time w/o errors ...
581                cpUTF8[i] = lastString.substring(0, i > 1 ? prefix[i - 2] : 0)
582                    + new String(bigSuffixData[bigSuffixCount++]);
583                mapUTF8.put(cpUTF8[i], Integer.valueOf(i));
584            } else {
585                cpUTF8[i] = lastString.substring(0, i > 1 ? prefix[i - 2] : 0)
586                    + new String(data, charCount, suffix[i - 1]);
587                charCount += suffix[i - 1];
588                mapUTF8.put(cpUTF8[i], Integer.valueOf(i));
589            }
590        }
591    }
592
593    @Override
594    public void read(final InputStream in) throws IOException, Pack200Exception {
595        parseCpUtf8(in);
596        parseCpInt(in);
597        parseCpFloat(in);
598        parseCpLong(in);
599        parseCpDouble(in);
600        parseCpString(in);
601        parseCpClass(in);
602        parseCpSignature(in);
603        parseCpDescriptor(in);
604        parseCpField(in);
605        parseCpMethod(in);
606        parseCpIMethod(in);
607
608        intOffset = cpUTF8.length;
609        floatOffset = intOffset + cpInt.length;
610        longOffset = floatOffset + cpFloat.length;
611        doubleOffset = longOffset + cpLong.length;
612        stringOffset = doubleOffset + cpDouble.length;
613        classOffset = stringOffset + cpString.length;
614        signatureOffset = classOffset + cpClass.length;
615        descrOffset = signatureOffset + cpSignature.length;
616        fieldOffset = descrOffset + cpDescriptor.length;
617        methodOffset = fieldOffset + cpFieldClass.length;
618        imethodOffset = methodOffset + cpMethodClass.length;
619    }
620
621    @Override
622    public void unpack() {
623
624    }
625
626}