ace import

git-svn-id: https://subversion.umiacs.umd.edu/ace/trunk@4 f1b3a171-7291-4a19-a512-95ad0ad9394a

ace-am/Licenses/license-ace.txt

+/*
+ * Copyright (c) 2007-2010, University of Maryland
+ * 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 the University of Maryland 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, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ACE Components were written in the ADAPT Project at the University of
+ * Maryland Institute for Advanced Computer Study.
+ */

ace-am/build.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="ace-common" default="default" basedir=".">
+    <description>Builds, tests, and runs the project ace-common.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar-with-manifest:    JAR building (if you are using a manifest)
+      -do-jar-without-manifest: JAR building (if you are not using a manifest)
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="ace-common-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

ace-am/nbproject/genfiles.properties

+build.xml.data.CRC32=e684feb8
+build.xml.script.CRC32=496ca38d
+build.xml.stylesheet.CRC32=958a1d3e@1.32.1.45
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=e684feb8
+nbproject/build-impl.xml.script.CRC32=e9be470e
+nbproject/build-impl.xml.stylesheet.CRC32=576378a2@1.32.1.45

ace-am/nbproject/private/private.properties

+compile.on.save=false
+do.depend=false
+do.jar=true
+javac.debug=true
+javadoc.preview=true
+jaxbwiz.endorsed.dirs=/opt/.opt.nfs/netbeans-6.8/ide12/modules/ext/jaxb/api
+user.properties.file=/fs/narahomes/toaster/.netbeans/6.8/build.properties

ace-am/nbproject/private/private.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project-private xmlns="http://www.netbeans.org/ns/project-private/1">
+    <editor-bookmarks xmlns="http://www.netbeans.org/ns/editor-bookmarks/1"/>
+</project-private>

ace-am/nbproject/project.properties

+application.title=ace-common
+application.vendor=mmcgann
+auxiliary.org-netbeans-modules-editor-indent.CodeStyle.project.expand-tabs=true
+auxiliary.org-netbeans-modules-editor-indent.CodeStyle.project.indent-shift-width=4
+auxiliary.org-netbeans-modules-editor-indent.CodeStyle.project.spaces-per-tab=4
+auxiliary.org-netbeans-modules-editor-indent.CodeStyle.project.tab-size=8
+auxiliary.org-netbeans-modules-editor-indent.CodeStyle.project.text-limit-width=100
+auxiliary.org-netbeans-modules-editor-indent.CodeStyle.usedProfile=project
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.expand-tabs=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.indent-shift-width=4
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaces-per-tab=4
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinCatchParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinForParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinIfParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinMethodDeclParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinSwitchParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinSynchronizedParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinWhileParens=true
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.tab-size=8
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.text-limit-width=100
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.wrapAssignOps=WRAP_IF_LONG
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.wrapBinaryOps=WRAP_IF_LONG
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.wrapEnumConstants=WRAP_ALWAYS
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.wrapExtendsImplementsKeyword=WRAP_IF_LONG
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.wrapMethodParams=WRAP_IF_LONG
+auxiliary.org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.wrapTernaryOps=WRAP_IF_LONG
+project.license=ace
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+debug.classpath=\
+    ${run.classpath}
+debug.test.classpath=\
+    ${run.test.classpath}
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/ace-common.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+endorsed.classpath=
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.source=1.5
+javac.target=1.5
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}:\
+    ${libs.junit_4.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+jaxbwiz.endorsed.dirs="${netbeans.home}/../ide12/modules/ext/jaxb/api"
+meta.inf.dir=${src.dir}/META-INF
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project
+# (you may also define separate properties like run-sys-prop.name=value instead of -Dname=value
+# or test-sys-prop.name=value to set system properties for unit tests):
+run.jvmargs=
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

ace-am/nbproject/project.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>ace-common</name>
+            <minimum-ant-version>1.6.5</minimum-ant-version>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+        <references xmlns="http://www.netbeans.org/ns/ant-project-references/1"/>
+    </configuration>
+</project>

ace-am/src/edu/umiacs/ace/compound/CompoundFileReader.java

+/*
+ * Copyright (c) 2007-2010, University of Maryland
+ * 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 the University of Maryland 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, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ACE Components were written in the ADAPT Project at the University of
+ * Maryland Institute for Advanced Computer Study.
+ */
+// $Id: CompoundFileReader.java 3192 2010-06-22 16:54:09Z toaster $
+
+package edu.umiacs.ace.compound;
+
+import edu.umiacs.ace.hashtree.HashTree;
+import edu.umiacs.ace.hashtree.HashTreeBuilder;
+import edu.umiacs.ace.hashtree.Proof;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ *
+ * @author toaster
+ */
+public class CompoundFileReader {
+
+    private CompoundObject co;
+    private boolean hasRead = false;
+    private MessageDigest digest;
+    private HashTree objectTree;
+
+    public CompoundFileReader( CompoundObject co ) {
+        this.co = co;
+        try {
+            digest = MessageDigest.getInstance("SHA-256");
+        } catch ( NoSuchAlgorithmException ex ) {
+            throw new RuntimeException(ex);
+        }
+    }
+
+    public void processObject() {
+        HashTreeBuilder htb = new HashTreeBuilder(digest);
+
+        for ( ObjectEntry oe : co ) {
+            htb.add(oe.getDigest());
+        }
+
+        hasRead = true;
+        objectTree = htb.build();
+    }
+
+    public HashTree getHashTree() {
+        return objectTree;
+    }
+
+    public Proof getProofForItem( int index ) {
+        if ( !hasRead ) {
+            throw new IllegalStateException("processObject not yet called");
+        }
+        return objectTree.proof(index);
+    }
+}

ace-am/src/edu/umiacs/ace/compound/CompoundObject.java

+/*
+ * Copyright (c) 2007-2010, University of Maryland
+ * 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 the University of Maryland 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, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ACE Components were written in the ADAPT Project at the University of
+ * Maryland Institute for Advanced Computer Study.
+ */
+// $Id: CompoundObject.java 3192 2010-06-22 16:54:09Z toaster $
+
+package edu.umiacs.ace.compound;
+
+/**
+ * Interface to access complex objects.
+ * 
+ * @author toaster
+ */
+public interface CompoundObject extends Iterable<ObjectEntry> {
+}

ace-am/src/edu/umiacs/ace/compound/ObjectEntry.java

+/*
+ * Copyright (c) 2007-2010, University of Maryland
+ * 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 the University of Maryland 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, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ACE Components were written in the ADAPT Project at the University of
+ * Maryland Institute for Advanced Computer Study.
+ */
+// $Id: ObjectEntry.java 3192 2010-06-22 16:54:09Z toaster $
+
+package edu.umiacs.ace.compound;
+
+/**
+ *
+ * @author toaster
+ */
+public class ObjectEntry {
+
+    private byte[] digest;
+    private long offset;
+    private String name;
+    private int index;
+    private long size;
+
+    void setDigest( byte[] digest ) {
+        this.digest = digest;
+    }
+
+    void setIndex( int index ) {
+        this.index = index;
+    }
+
+    void setName( String name ) {
+        this.name = name;
+    }
+
+    void setOffset( long offset ) {
+        this.offset = offset;
+    }
+
+    public byte[] getDigest() {
+        return digest;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public long getOffset() {
+        return offset;
+    }
+
+    void setSize( long size ) {
+        this.size = size;
+    }
+
+    public long getSize() {
+        return size;
+    }
+}

ace-am/src/edu/umiacs/ace/compound/ZipObject.java

+/*
+ * Copyright (c) 2007-2010, University of Maryland
+ * 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 the University of Maryland 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, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ACE Components were written in the ADAPT Project at the University of
+ * Maryland Institute for Advanced Computer Study.
+ */
+// $Id: ZipObject.java 3192 2010-06-22 16:54:09Z toaster $
+
+package edu.umiacs.ace.compound;
+
+import java.io.IOException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Iterator;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+import javax.activation.DataSource;
+
+/**
+ *
+ * @author toaster
+ */
+public class ZipObject implements CompoundObject {
+
+    private DataSource ds;
+
+    public ZipObject( DataSource ds ) {
+        this.ds = ds;
+    }
+
+    public Iterator<ObjectEntry> iterator() {
+        return new ZipIterator();
+    }
+
+    class ZipIterator implements Iterator<ObjectEntry> {
+
+        byte data[] = new byte[2048];
+        ZipInputStream zin;
+        ObjectEntry oe;
+        int index = 0;
+        private MessageDigest digest;
+
+        public ZipIterator() {
+            try {
+                digest = MessageDigest.getInstance("SHA-256");
+                zin = new ZipInputStream(ds.getInputStream());
+                readNext();
+            } catch ( NoSuchAlgorithmException ex ) {
+                throw new RuntimeException(
+                        "Error creating digest " + ds.getName(), ex);
+            } catch ( IOException ex ) {
+                throw new RuntimeException(
+                        "Error opening zip file " + ds.getName(), ex);
+            }
+        }
+
+        public boolean hasNext() {
+            return oe != null;
+        }
+
+        public ObjectEntry next() {
+            ObjectEntry previous = oe;
+
+            try {
+                readNext();
+            } catch ( IOException ioe ) {
+                throw new RuntimeException(ioe);
+            }
+
+            return previous;
+        }
+
+        private void readNext() throws IOException {
+            ZipEntry entry = zin.getNextEntry();
+            int count;
+
+            if ( entry == null ) {
+                if ( zin != null ) {
+                    zin.close();
+                    zin = null;
+                }
+                oe = null;
+                return;
+            }
+
+            oe = new ObjectEntry();
+            oe.setOffset(-1);
+            oe.setSize(entry.getSize());
+            oe.setName(entry.getName());
+            oe.setIndex(index);
+
+            digest.reset();
+            while ( (count = zin.read(data)) != -1 ) {
+                digest.update(data, 0, count);
+
+            }
+            oe.setDigest(digest.digest());
+            index++;
+        }
+
+        public void remove() {
+            throw new UnsupportedOperationException("Remove not supported");
+        }
+    }
+}

ace-am/src/edu/umiacs/ace/digest/DigestException.java

+/*
+ * Copyright (c) 2007-2010, University of Maryland
+ * 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 the University of Maryland 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, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ACE Components were written in the ADAPT Project at the University of
+ * Maryland Institute for Advanced Computer Study.
+ */
+
+// $Id: DigestException.java 3192 2010-06-22 16:54:09Z toaster $
+
+package edu.umiacs.ace.digest;
+