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169 lines
7.2 KiB
HTML
169 lines
7.2 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Language" content="en-us">
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<title>Ant User Manual</title>
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</head>
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<body>
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<h2><a name="tar">Tar</a></h2>
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<h3>Description</h3>
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<p>Creates a tar archive.</p>
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<p>The <i>basedir</i> attribute is the reference directory from where to tar.</p>
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<p>This task is a <a href="../dirtasks.html#directorybasedtasks">directory based task</a>
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and, as such, forms an implicit <a href="../CoreTypes/fileset.html">Fileset</a>. This
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defines which files, relative to the <i>basedir</i>, will be included in the
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archive. The tar task supports all the attributes of Fileset to refine the
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set of files to be included in the implicit fileset.</p>
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<p>In addition to the implicit fileset, the tar task supports nested filesets. These
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filesets are extended to allow control over the access mode, username and groupname
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to be applied to the tar entries. This is useful, for example, when preparing archives for
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Unix systems where some files need to have execute permission.</p>
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<p>The POSIX tar standard does not support path lengths greater than 100 characters. The
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behaviour of the tar task when it encounters such paths is controlled by the <i>longfile</i>
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attribute. If this attribute is not present, the tar task will throw an exception upon encountering
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a long path. If the longfile attribute is set to <code>truncate</code>, any long paths will be
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truncated to the 100 character maximum length prior to adding to the archive. This ensures that
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the file will be in the archive and that the archive can be untarred by any compliant version of
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tar. If the loss of path information is not acceptable, and it rarely is, longfile may be set to
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the value <code>gnu</code>. The tar task will then produce a GNU tar file which can have
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arbitrary length paths. Note however, that the resulting archive will only be able to be untarred
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with GNU tar.</p>
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<p>Note that this task does not perform compression. You might want to use the
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<a href="gzip.html">GZip</a> task to prepare a .tar.gz package.</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td valign="top" align="center"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">tarfile</td>
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<td valign="top">the tar-file to create.</td>
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<td align="center" valign="top">Yes</td>
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</tr>
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<tr>
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<td valign="top">basedir</td>
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<td valign="top">the directory from which to zip the files.</td>
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<td align="center" valign="top">No</td>
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</tr>
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<tr>
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<td valign="top">longfile</td>
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<td valign="top">Controls how long paths are handled. Allowable
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values are "gnu" and "truncate"</td>
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<td align="center" valign="top">No</td>
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</tr>
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<tr>
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<td valign="top">includes</td>
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<td valign="top">comma separated list of patterns of files that must be
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included. All files are included when omitted.</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">includesfile</td>
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<td valign="top">the name of a file. Each line of this file is
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taken to be an include pattern</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">excludes</td>
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<td valign="top">comma separated list of patterns of files that must be
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excluded. No files (except default excludes) are excluded when omitted.</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">excludesfile</td>
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<td valign="top">the name of a file. Each line of this file is
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taken to be an exclude pattern</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">defaultexcludes</td>
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<td valign="top">indicates whether default excludes should be used or not
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("yes"/"no"). Default excludes are used when omitted.</td>
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<td valign="top" align="center">No</td>
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</tr>
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</table>
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<h3>Nested Elements</h3>
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The tar task supports nested <a href="../CoreTypes/fileset.html">tarfileset</a> elements. These are
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extended Filesets which, in addition to the standard fileset elements, support three additional
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attributes
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td valign="top" align="center"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">mode</td>
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<td valign="top">An 3 digit octal string, specify the user, group and other modes in
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the standard Unix fashion</td>
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<td align="center" valign="top">No</td>
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</tr>
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<tr>
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<td valign="top">username</td>
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<td valign="top">The username for the tar entry. This is not the same as the UID, which is
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not currently set by the tar task.</td>
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<td align="center" valign="top">No</td>
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</tr>
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<tr>
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<td valign="top">groupname</td>
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<td valign="top">The username for the tar entry. This is not the same as the GID, which is
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not currently set by the tar task.</td>
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<td align="center" valign="top">No</td>
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</tr>
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</table>
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<h3>Examples</h3>
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<pre> <tar tarfile="${dist}/manual.tar" basedir="htdocs/manual"/>
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<gzip zipfile="${dist}/manual.tar.gz" src="${dist}/manual.tar"/></pre>
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<p>tars all files in the <code>htdocs/manual</code> directory into a file called <code>manual.tar</code>
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in the <code>${dist}</code> directory, then applies the gzip task to compress
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it.</p>
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<pre> <tar tarfile="${dist}/manual.tar"
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basedir="htdocs/manual"
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excludes="mydocs/**, **/todo.html"
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/></pre>
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<p>tars all files in the <code>htdocs/manual</code> directory into a file called <code>manual.tar</code>
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in the <code>${dist}</code> directory. Files in the directory <code>mydocs</code>,
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or files with the name <code>todo.html</code> are excluded.</p>
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<pre><tar longfile="gnu"
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tarfile="${dist.base}/${dist.name}-src.tar" >
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<tarfileset dir="${dist.name}/.." mode="755" username="ant" group="ant">
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<include name="${dist.name}/bootstrap.sh"/>
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<include name="${dist.name}/build.sh"/>
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</fileset>
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<tarfileset dir="${dist.name}/.." username="ant" group="ant">
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<include name="${dist.name}/**"/>
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<exclude name="${dist.name}/bootstrap.sh"/>
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<exclude name="${dist.name}/build.sh"/>
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</fileset>
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</tar> </pre>
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<p>This example shows building a tar which uses the GNU extensions for long paths and
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where some files need to be marked as executable (mode 755)
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and the rest are use the default mode (read-write by owner). The first
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fileset selects just the executable files. The second fileset must exclude
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the executable files and include all others. </p>
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<p><strong>Note: </strong> The tar task does not ensure that a file is only selected
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by one fileset. If the same file is selected by more than one fileset, it will be included in the
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tar file twice, with the same path.</p>
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<hr>
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<p align="center">Copyright © 2000,2001 Apache Software Foundation. All rights
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Reserved.</p>
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</body>
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</html>
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