2006-09-11 04:19:00 +00:00
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
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-->
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2001-02-13 12:32:01 +00:00
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<html>
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<head>
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<meta http-equiv="Content-Language" content="en-us">
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2005-04-29 18:58:16 +00:00
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<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
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2002-02-03 22:00:42 +00:00
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<title>Touch Task</title>
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</head>
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<body>
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<h2><a name="touch">Touch</a></h2>
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<h3>Description</h3>
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<p>Changes the modification time of a resource and possibly creates it
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at the same time. In addition to working with a single file, this Task
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can also work on <a href="../CoreTypes/resource.html">resource</a> and
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resource collections (which also includes directories). Prior to Ant
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1.7 only FileSet or <a href="../CoreTypes/filelist.html">Filelist</a>
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(since Ant 1.6) have been supported.</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 align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">file</td>
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<td valign="top">The name of the file.</td>
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<td valign="top" align="center">Unless a nested resource collection element
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has been specified.</td>
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</tr>
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<tr>
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<td valign="top">millis</td>
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<td valign="top">Specifies the new modification time of the file
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in milliseconds since midnight Jan 1 1970.</td>
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<td valign="center" align="center" rowspan="2">No--datetime takes
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precedence, however if both are omitted the current time is assumed.</td>
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</tr>
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<tr>
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<td valign="top">datetime</td>
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<td valign="top">Specifies the new modification time of the file.</td>
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</tr>
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<tr>
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<td valign="top">pattern</td>
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<td valign="top">SimpleDateFormat-compatible pattern string.
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Defaults to MM/DD/YYYY HH:MM AM_or_PM or MM/DD/YYYY HH:MM:SS AM_or_PM.
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<b>Since Ant 1.6.3</b></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">mkdirs</td>
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<td valign="top">Whether to create nonexistent parent
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directories when touching new files. <b>Since Ant 1.6.3</b></td>
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<td valign="top" align="center">No, default <i>false</i>.</td>
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</tr>
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<tr>
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<td valign="top">verbose</td>
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<td valign="top">Whether to log the creation of new files.
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<b>Since Ant 1.6.3</b></td>
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<td valign="top" align="center">No, default <i>true</i>.</td>
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</tr>
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</table>
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<h3>Parameters specified as nested elements</h3>
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<h4>any resource collection</h4>
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<p>You can use any number of nested resource collection elements to
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define the resource for this task and refer to resources defined
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elsewhere. <b>Note:</b> resource passed to this task must implement
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the <code>org.apache.tools.ant.types.resources.Touchable</code>
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interface, this is true for all filesystem-based resources like those
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returned by path, fileset ot filelist.</p>
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<p>For backwards compatibility directories matched by nested filesets
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will be "touched" as well, use a <type> selector to suppress
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this. This only applies to filesets nested into the task directly,
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not to filesets nested into a path or any other resource
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collection.</p>
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2005-01-22 20:08:55 +00:00
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<h4>mapper</h4>
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<p><em>Since Ant 1.6.3,</em> a nested <a href="../CoreTypes/mapper.html">
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mapper</a> can be specified. Files specified via nested
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<code>fileset</code>s, <code>filelist</code>s, or the <code>file</code>
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attribute are mapped using the specified mapper. For each file mapped,
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the resulting files are touched. If the original file exists its
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timestamp will be used. Otherwise the task settings (<code>millis</code>,
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<code>datetime</code>) take effect.</p>
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2001-02-13 12:32:01 +00:00
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<h3>Examples</h3>
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<pre> <touch file="myfile"/></pre>
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<p>creates <code>myfile</code> if it doesn't exist and changes the
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modification time to the current time.</p>
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<pre> <touch file="myfile" datetime="06/28/2000 2:02 pm"/></pre>
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<p>creates <code>myfile</code> if it doesn't exist and changes the
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modification time to Jun, 28 2000 2:02 pm (14:02 for those used to 24
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hour times).</p>
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2001-03-29 09:37:12 +00:00
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<pre> <touch datetime="09/10/1974 4:30 pm">
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<fileset dir="src_dir"/>
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</touch></pre>
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<p>changes the modification time to Oct, 09 1974 4:30 pm of all files and directories
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found in <code>src_dir</code>. </p>
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2003-06-24 12:46:57 +00:00
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<pre> <touch file="myfile" datetime="06/28/2000 2:02:17 pm"/></pre>
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<p>creates <code>myfile</code> if it doesn't exist and changes the
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modification time to Jun, 28 2000 2:02:17 pm (14:02:17 for those used to 24
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hour times), if the filesystem allows a precision of one second - a
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time close to it otherwise.</p>
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<pre> <touch file="foo">
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<mapper type="glob" from="foo" to="bar" />
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</touch>
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</pre>
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<p>creates <code>bar</code> if it doesn't exist and changes the
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modification time to that of <code>foo</code>.</p>
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2006-09-11 04:33:25 +00:00
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2001-02-13 12:32:01 +00:00
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</body>
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</html>
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