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Message-ID: <000f01c61fc5$abc1eff0$6400a8c0@scaggslap>
From: "Bob Scaggs" <rscaggs@vnet.net>
To: <user@ant.apache.org>
Subject: Re: "java.io.IOException: Negative seek offset" while expanding .tar
 file
Date: Sun, 22 Jan 2006 21:35:27 -0500
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oops typo in my test code.  Same problem with corrected code:

<?xml version=3D"1.0" encoding=3D"ISO-8859-1"?>

<project name=3D"TarTest" default=3D"hash" basedir=3D".">

 <property name=3D"tardir" value=3D"${basedir}/tar" />
 <property name=3D"buildTemp" value=3D"${basedir}/buildTemp" />
 <property name=3D"TestFilesDir" value=3D"${buildTemp}/TestFilesDir" />
 <property name=3D"expandedFilesDir" value=3D"${basedir}/expandedFiles" =
/>

 <!-- Create the SHA256 Hash -->
 <target name=3D"hash"  depends=3D"unTar" >

      <exec executable=3D"java" failonerror=3D"true" =
dir=3D"${TestFilesDir}" =
output=3D"'../buildHash-AutoEnrollConfig-O1-1HASv01.txt'">
  <arg line=3D"-jar '/jacksum.jar' -a sha256 -f -p -P / -r ."/>
      </exec>
   =20
 </target>

 <!-- expand the tar file -->
 <target name =3D"unTar"  depends=3D"makeTar" >
  <unzip src=3D"${tardir}/test.tar" dest=3D"${expandedFilesDir}" />
 </target>

 <!-- create the tar file -->
 <target name =3D"makeTar" depends=3D"buildTestFiles" >
  <mkdir dir=3D"${tardir}"/>
  <tar destfile=3D"${tardir}/test.tar" basedir=3D"${buildTemp}" />
 </target>

 <!-- create some files -->
 <target name=3D"buildTestFiles" depends=3D"prepareDirs" >
  <concat destfile=3D"${TestFilesDir}/file1.txt">This is file1</concat>
  <concat destfile=3D"${TestFilesDir}/file2.txt">This is file2</concat>
  <concat destfile=3D"${TestFilesDir}/file3.txt">This is file3</concat>
 </target>

 <!-- create reqrd dirs -->
 <target name=3D"prepareDirs" >
  <mkdir dir=3D"${tardir}"/>
  <mkdir dir=3D"${buildTemp}"/>
  <mkdir dir=3D"${TestFilesDir}"/>
  <mkdir dir=3D"${expandedFilesDir}"/>
 </target>



</project>



  ----- Original Message -----=20
  From: Bob Scaggs=20
  To: user@ant.apache.org=20
  Sent: Sunday, January 22, 2006 1:33 PM
  Subject: "java.io.IOException: Negative seek offset" while expanding =
.tar file


  I am getting an error when I use the unzip task to expand a tar file =
created using the tar task.

  Below is a sample of the code I am executing as well as the error I am =
recieving.

  Can anyone help with this?

  listing of build.xml:

  <?xml version=3D"1.0" encoding=3D"ISO-8859-1"?>
  <project name=3D"TarTest" default=3D"unTar" basedir=3D".">
   <property name=3D"tardir" value=3D"${basedir}/tar" />
   <property name=3D"buildTemp" value=3D"${basedir}/buildTemp" />
   <property name=3D"TestFilesDir" value=3D"${buildTemp}/TestFilesDir" =
/>
   <property name=3D"expandedFilesDir" =
value=3D"${basedir}/expandedFiles" />

   <!-- expand the tar file -->
   <target name =3D"unTar"  depends=3D"makeTar" >
    <unzip src=3D"${tardir}/test.tar" dest=3D"${TARdistributionDir}" />
   </target>

   <!-- create the tar file -->
   <target name =3D"makeTar" depends=3D"buildTestFiles" >
    <mkdir dir=3D"${tardir}"/>
    <tar destfile=3D"${tardir}/test.tar" basedir=3D"${buildTemp}" />
   </target>

   <!-- create some files -->
   <target name=3D"buildTestFiles" depends=3D"prepareDirs" >
    <concat destfile=3D"${TestFilesDir}/file1.txt">This is =
file1</concat>
    <concat destfile=3D"${TestFilesDir}/file2.txt">This is =
file2</concat>
    <concat destfile=3D"${TestFilesDir}/file3.txt">This is =
file3</concat>
   </target>

   <!-- create reqrd dirs -->
   <target name=3D"prepareDirs" >
    <mkdir dir=3D"${tardir}"/>
    <mkdir dir=3D"${buildTemp}"/>
    <mkdir dir=3D"${TestFilesDir}"/>
    <mkdir dir=3D"${expandedFilesDir}"/>
   </target>
  </project>

  Result of  "ant -verbose" using the above build file:

   C:\test>ant -verbose
   Apache Ant version 1.6.2 compiled on July 16 2004
   Buildfile: build.xml
   Detected Java version: 1.4 in: =
C:\Progra~1\IBM\Rational\SDP\6.0\runtimes\base_v6
   \_jvm\jre
   Detected OS: Windows XP
   parsing buildfile C:\test\build.xml with URI =3D =
file:///C:/test/build.xml
   Project base dir set to: C:\test
   Build sequence for target `unTar' is [prepareDirs, buildTestFiles, =
makeTar, unTa
   r]
   Complete build sequence is [prepareDirs, buildTestFiles, makeTar, =
unTar, ]

   prepareDirs:
       [mkdir] Created dir: C:\test\tar
       [mkdir] Created dir: C:\test\buildTemp
       [mkdir] Created dir: C:\test\buildTemp\TestFilesDir
       [mkdir] Created dir: C:\test\expandedFiles

   buildTestFiles:

   makeTar:
         [tar]  added as C:/test/tar/test.tar doesn't exist.
         [tar] TestFilesDir added as C:/test/tar/test.tar doesn't exist.
         [tar] TestFilesDir\file1.txt added as C:/test/tar/test.tar =
doesn't exist.
         [tar] TestFilesDir\file2.txt added as C:/test/tar/test.tar =
doesn't exist.
         [tar] TestFilesDir\file3.txt added as C:/test/tar/test.tar =
doesn't exist.
         [tar] Building tar: C:\test\tar\test.tar

   unTar:
   Property ${TARdistributionDir} has not been set
       [unzip] Expanding: C:\test\tar\test.tar into =
C:\test\${TARdistributionDir}

   BUILD FAILED
   C:\test\build.xml:10: Error while expanding C:\test\tar\test.tar
    at org.apache.tools.ant.taskdefs.Expand.expandFile(Expand.java:128)
    at org.apache.tools.ant.taskdefs.Expand.execute(Expand.java:92)
    at =
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
    at org.apache.tools.ant.Task.perform(Task.java:364)
    at org.apache.tools.ant.Target.execute(Target.java:341)
    at org.apache.tools.ant.Target.performTasks(Target.java:369)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
    at org.apache.tools.ant.Main.runBuild(Main.java:673)
    at org.apache.tools.ant.Main.startAnt(Main.java:188)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)
   Caused by: java.io.IOException: Negative seek offset
    at java.io.RandomAccessFile.seek(Native Method)
    at =
org.apache.tools.zip.ZipFile.positionAtCentralDirectory(ZipFile.java(
   Compiled Code))
    at =
org.apache.tools.zip.ZipFile.populateFromCentralDirectory(ZipFile.jav
   a:235)
    at org.apache.tools.zip.ZipFile.<init>(ZipFile.java:142)
    at org.apache.tools.ant.taskdefs.Expand.expandFile(Expand.java:117)
    ... 11 more
   --- Nested Exception ---
   java.io.IOException: Negative seek offset
    at java.io.RandomAccessFile.seek(Native Method)
    at =
org.apache.tools.zip.ZipFile.positionAtCentralDirectory(ZipFile.java(
   Compiled Code))
    at =
org.apache.tools.zip.ZipFile.populateFromCentralDirectory(ZipFile.jav
   a:235)
    at org.apache.tools.zip.ZipFile.<init>(ZipFile.java:142)
    at org.apache.tools.ant.taskdefs.Expand.expandFile(Expand.java:117)
    at org.apache.tools.ant.taskdefs.Expand.execute(Expand.java:92)
    at =
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
    at org.apache.tools.ant.Task.perform(Task.java:364)
    at org.apache.tools.ant.Target.execute(Target.java:341)
    at org.apache.tools.ant.Target.performTasks(Target.java:369)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
    at org.apache.tools.ant.Main.runBuild(Main.java:673)
    at org.apache.tools.ant.Main.startAnt(Main.java:188)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)

   Total time: 1 second


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