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| 9 | http://www.apache.org/licenses/LICENSE-2.0
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| 10 |
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| 11 | Unless required by applicable law or agreed to in writing, software
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| 12 | distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 17 | <html>
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| 18 |
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| 19 | <head>
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| 20 | <meta http-equiv="Content-Language" content="en-us">
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| 21 | <link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
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| 22 | <title>Apply Task</title>
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| 23 | <link rel="stylesheet" type="text/css" href="../stylesheets/antmanual.css">
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| 24 | </head>
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| 25 |
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| 26 | <body>
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| 27 |
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| 28 | <h2><a name="apply">Apply/<i>ExecOn</i></a></h2>
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| 29 | <p><i>The name <code>execon</code> is deprecated and only kept for backwards
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| 30 | compatibility.</i></p>
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| 31 | <h3>Description</h3>
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| 32 | <p>Executes a system command. When the <i>os</i> attribute is specified, then
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| 33 | the command is only executed when Ant is run on one of the specified operating
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| 34 | systems.</p>
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| 35 |
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| 36 | <p>The files and/or directories of a number of <a
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| 37 | href="../CoreTypes/resources.html#collection">Resource Collection</a>s
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| 38 | – including but not restricted to
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| 39 | <a href="../CoreTypes/fileset.html">FileSet</a>s,
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| 40 | <a href="../CoreTypes/dirset.html">DirSet</a>s
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| 41 | (<em>since Ant 1.6</em>) or
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| 42 | <a href="../CoreTypes/filelist.html">FileList</a>s
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| 43 | (<em>since Ant 1.6</em>)
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| 44 | –
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| 45 | are passed as arguments to the system command.</p>
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| 46 | <p>If you specify a nested <a href="../CoreTypes/mapper.html">mapper</a>,
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| 47 | the timestamp of each source file is compared to the timestamp of a
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| 48 | target file which is defined by the nested mapper element and searched
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| 49 | for in the given <i>dest</i>, if specified.</p>
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| 50 | <p>At least one fileset or filelist is required,
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| 51 | and you must not specify more than one mapper.</p>
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| 52 |
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| 53 | <p>Note that you cannot interact with the forked program, the only way
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| 54 | to send input to it is via the input and inputstring attributes.</p>
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| 55 |
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| 56 | <h3>Parameters</h3>
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| 57 | <table border="1" cellpadding="2" cellspacing="0">
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| 58 | <tr>
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| 59 | <td valign="top"><b>Attribute</b></td>
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| 60 | <td valign="top"><b>Description</b></td>
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| 61 | <td align="center" valign="top"><b>Required</b></td>
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| 62 | </tr>
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| 63 | <tr>
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| 64 | <td valign="top">executable</td>
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| 65 | <td valign="top">the command to execute without any command line
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| 66 | arguments.</td>
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| 67 | <td align="center" valign="top">Yes</td>
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| 68 | </tr>
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| 69 | <tr>
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| 70 | <td valign="top">dest</td>
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| 71 | <td valign="top">the directory where the command is expected to place
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| 72 | target files when it is executed. This attribute is valid only when used
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| 73 | in conjunction with a nested mapper; if omitted, the target filenames
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| 74 | returned by the mapper will be interpreted as absolute paths.</td>
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| 75 | <td align="center" valign="top">No</td>
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| 76 | </tr>
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| 77 | <tr>
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| 78 | <td valign="top">spawn</td>
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| 79 | <td valign="top">whether or not you want the commands to be spawned.<br>
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| 80 | If you spawn a command, its output will not be logged by ant.<br>
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| 81 | The input, output, error, and result property settings are not active when spawning a process.<br>
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| 82 | <em>since Ant 1.6</em>
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| 83 | </td>
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| 84 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 85 | </tr>
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| 86 |
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| 87 | <tr>
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| 88 | <td valign="top">dir</td>
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| 89 | <td valign="top">the directory in which the command should be executed.</td>
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| 90 | <td align="center" valign="top">No</td>
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| 91 | </tr>
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| 92 | <tr>
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| 93 | <td valign="top">relative</td>
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| 94 | <td valign="top">whether the filenames should be passed on the
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| 95 | command line as relative pathnames (relative to the base directory
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| 96 | of the corresponding fileset/list for source files or the
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| 97 | <i>dest</i> attribute for target files).</td>
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| 98 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 99 | </tr>
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| 100 | <tr>
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| 101 | <td valign="top">forwardslash</td>
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| 102 | <td valign="top">whether the file names should be passed
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| 103 | with forward slashes even if the operating system requires other
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| 104 | file separator. The option is ignored if the system file separator
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| 105 | is a forward slash.</td>
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| 106 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 107 | </tr>
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| 108 | <tr>
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| 109 | <td valign="top">os</td>
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| 110 | <td valign="top">list of Operating Systems on which the command may be
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| 111 | executed.</td>
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| 112 | <td align="center" valign="top">No</td>
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| 113 | </tr>
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| 114 | <tr>
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| 115 | <td valign="top">osfamily</td>
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| 116 | <td valign="top">OS family as used in the <os> condition.
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| 117 | <em>since Ant 1.7</em></td>
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| 118 | <td align="center" valign="top">No</td>
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| 119 | </tr>
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| 120 | <tr>
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| 121 | <td valign="top">output</td>
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| 122 | <td valign="top">the file to which the output of the command
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| 123 | should be redirected. If the error stream is not also redirected
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| 124 | to a file or property, it will appear in this output.</td>
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| 125 | <td align="center" valign="top">No</td>
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| 126 | </tr>
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| 127 | <tr>
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| 128 | <td valign="top">error</td>
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| 129 | <td valign="top">The file to which the standard error of the
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| 130 | command should be redirected. <em>since Ant 1.6</em></td>
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| 131 | <td align="center" valign="top">No</td>
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| 132 | </tr>
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| 133 | <tr>
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| 134 | <td valign="top">logError</td>
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| 135 | <td valign="top">This attribute is used when you wish to see error
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| 136 | output in Ant's log and you are redirecting output to a
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| 137 | file/property. The error output will not be included in the output
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| 138 | file/property. If you redirect error with the "error" or
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| 139 | "errorProperty" attributes, this will have no effect.
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| 140 | <em>since Ant 1.6</em></td>
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| 141 | <td align="center" valign="top">No</td>
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| 142 | </tr>
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| 143 | <tr>
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| 144 | <td valign="top">append</td>
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| 145 | <td valign="top">whether output should be appended to or overwrite
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| 146 | an existing file. If you set parallel to false, you will probably
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| 147 | want to set this one to true.</td>
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| 148 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 149 | </tr>
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| 150 | <tr>
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| 151 | <td valign="top">outputproperty</td>
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| 152 | <td valign="top">the name of a property in which the output of the
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| 153 | command should be stored. Unless the error stream is redirected
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| 154 | to a separate file or stream, this property will include the error
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| 155 | output.</td>
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| 156 | <td align="center" valign="top">No</td>
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| 157 | </tr>
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| 158 | <tr>
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| 159 | <td valign="top">errorproperty</td>
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| 160 | <td valign="top">The name of a property in which the standard error of the
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| 161 | command should be stored. <em>since Ant 1.6</em></td>
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| 162 | <td align="center" valign="top">No</td>
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| 163 | </tr>
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| 164 | <tr>
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| 165 | <td valign="top">input</td>
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| 166 | <td valign="top">A file from which the executed command's standard
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| 167 | input is taken. This attribute is mutually exclusive with the
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| 168 | inputstring attribute. <em>since Ant 1.6</em></td>
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| 169 | <td align="center" valign="top">No</td>
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| 170 | </tr>
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| 171 | <tr>
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| 172 | <td valign="top">inputstring</td>
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| 173 | <td valign="top">A string which serves as the input stream for the
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| 174 | executed command. This attribute is mutually exclusive with the
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| 175 | input attribute. <em>since Ant 1.6</em></td>
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| 176 | <td align="center" valign="top">No</td>
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| 177 | </tr>
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| 178 | <tr>
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| 179 | <td valign="top">resultproperty</td>
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| 180 | <td valign="top">the name of a property in which the return code
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| 181 | of the command should be stored. Only of interest if
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| 182 | failonerror=false. If you set parallel to false, only the result
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| 183 | of the first execution will be stored.</td>
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| 184 | <td align="center" valign="top">No</td>
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| 185 | </tr>
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| 186 | <tr>
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| 187 | <td valign="top">timeout</td>
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| 188 | <td valign="top">Stop the command if it doesn't finish within the
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| 189 | specified time (given in milliseconds).</td>
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| 190 | <td align="center" valign="top">No</td>
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| 191 | </tr>
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| 192 | <tr>
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| 193 | <td valign="top">failonerror</td>
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| 194 | <td valign="top">Stop the buildprocess if the command exits with a
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| 195 | returncode other than 0.</td>
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| 196 | <td align="center" valign="top">No</td>
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| 197 | </tr>
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| 198 | <tr>
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| 199 | <td valign="top">failifexecutionfails</td>
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| 200 | <td valign="top">Stop the build if we can't start the program.
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| 201 | Defaults to true. </td>
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| 202 | <td align="center" valign="top">No</td>
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| 203 | </tr>
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| 204 | <tr>
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| 205 | <td valign="top">skipemptyfilesets</td>
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| 206 | <td valign="top">Don't run the command, if no source files have
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| 207 | been found or are newer than their corresponding target
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| 208 | files. Despite its name, this attribute applies to filelists as
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| 209 | well.</td>
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| 210 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 211 | </tr>
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| 212 | <tr>
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| 213 | <td valign="top">parallel</td>
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| 214 | <td valign="top">Run the command only once, appending all files as
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| 215 | arguments. If false, command will be executed once for every file.</td>
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| 216 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 217 | </tr>
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| 218 | <tr>
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| 219 | <td valign="top">type</td>
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| 220 | <td valign="top">One of <i>file</i>, <i>dir</i> or
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| 221 | <i>both</i>. If set to <i>file</i>, only the names of plain
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| 222 | files will be sent to the command. If set to <i>dir</i>, only
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| 223 | the names of directories are considered.<br>
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| 224 | <strong>Note:</strong> The type attribute does not apply to
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| 225 | nested <i>dirset</i>s - <i>dirset</i>s always implicitly
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| 226 | assume type to be <i>dir</i>.</td>
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| 227 | <td align="center" valign="top">No, default is <i>file</i></td>
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| 228 | </tr>
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| 229 | <tr>
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| 230 | <td valign="top">newenvironment</td>
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| 231 | <td valign="top">Do not propagate old environment when new environment
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| 232 | variables are specified.</td>
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| 233 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 234 | </tr>
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| 235 | <tr>
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| 236 | <td valign="top">vmlauncher</td>
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| 237 | <td valign="top">Run command using the Java VM's execution facilities
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| 238 | where available. If set to false the underlying OS's shell,
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| 239 | either directly or through the antRun scripts, will be used.
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| 240 | Under some operating systems, this gives access to facilities
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| 241 | not normally available through the VM including, under Windows,
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| 242 | being able to execute scripts, rather than their associated
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| 243 | interpreter. If you want to specify the name of the
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| 244 | executable as a relative path to the directory given by the
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| 245 | dir attribute, it may become necessary to set vmlauncher to
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| 246 | false as well.</td>
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| 247 | <td align="center" valign="top">No, default is <i>true</i></td>
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| 248 | </tr>
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| 249 | <tr>
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| 250 | <td valign="top">resolveExecutable</td>
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| 251 | <td valign="top">When this attribute is true, the name of the
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| 252 | executable if resolved firstly against the project basedir and if
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| 253 | that does not exist, against the execution directory if
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| 254 | specified. On Unix systems, if you only want to allow execution of
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| 255 | commands in the user's path, set this to false.
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| 256 | <em>since Ant 1.6</em></td>
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| 257 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 258 | </tr>
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| 259 | <tr>
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| 260 | <td valign="top">maxparallel</td>
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| 261 | <td valign="top">Limit the amount of parallelism by passing at
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| 262 | most this many sourcefiles at once. Set it to <= 0 for
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| 263 | unlimited. <em>Since Ant 1.6.</em></td>
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| 264 | <td align="center" valign="top">No, unlimited by default</td>
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| 265 | </tr>
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| 266 | <tr>
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| 267 | <td valign="top">addsourcefile</td>
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| 268 | <td valign="top">Whether source file names should be added to the
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| 269 | command automatically. <em>Since Ant 1.6.</em></td>
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| 270 | <td align="center" valign="top">No, default is <i>true</i></td>
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| 271 | </tr>
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| 272 | <tr>
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| 273 | <td valign="top">verbose</td>
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| 274 | <td valign="top">Whether to print a summary after execution or not.
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| 275 | <em>Since Ant 1.6.</em></td>
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| 276 | <td align="center" valign="top">No, default <i>false</i></td>
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| 277 | </tr>
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| 278 | <tr>
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| 279 | <td valign="top">ignoremissing</td>
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| 280 | <td valign="top">Whether to ignore nonexistent files specified
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| 281 | via filelists. <em>Since Ant 1.6.2.</em></td>
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| 282 | <td align="center" valign="top">No, default is <i>true</i></td>
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| 283 | </tr>
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| 284 | <tr>
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| 285 | <td valign="top">force</td>
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| 286 | <td valign="top">Whether to bypass timestamp comparisons
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| 287 | for target files. <em>Since Ant 1.6.3.</em></td>
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| 288 | <td align="center" valign="top">No, default is <i>false</i></td>
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| 289 | </tr>
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| 290 | </table>
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| 291 | <h3>Parameters specified as nested elements</h3>
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| 292 | <h4>fileset</h4>
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| 293 | <p>You can use any number of nested <code><fileset></code>
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| 294 | elements to define the files for this task and refer to
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| 295 | <code><fileset></code>s defined elsewhere.</p>
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| 296 | <h4>filelist</h4>
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| 297 | <p><em>Since Ant 1.6</em></p>
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| 298 | <p>You can use any number of nested <code><filelist></code>
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| 299 | elements to define the files for this task and refer to
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| 300 | <code><filelist></code>s defined elsewhere.</p>
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| 301 | <h4>dirset</h4>
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| 302 | <p><em>Since Ant 1.6</em></p>
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| 303 | <p>You can use any number of nested <code><dirset></code>
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| 304 | elements to define the directories for this task and refer to
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| 305 | <code><dirset></code>s defined elsewhere.</p>
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| 306 |
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| 307 | <h4>Any other <a href="../CoreTypes/resources.html#collection">Resource
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| 308 | Collection</a></h4>
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| 309 | <p><em>since Ant 1.7</em></p>
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| 310 | <p>You can use any number of nested resource collections.</p>
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| 311 |
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| 312 | <h4>mapper</h4>
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| 313 | <p>A single <code><mapper></code> specifies the target files relative
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| 314 | to the <code>dest</code> attribute for dependency checking. If the
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| 315 | <code>dest</code> attribute is specified it will be used as a base directory
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| 316 | for resolving relative pathnames returned by the mapper. At least one
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| 317 | <code><fileset></code> or <code><filelist></code> is required.</p>
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| 318 | <h4>arg</h4>
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| 319 | <p>Command line arguments should be specified as nested
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| 320 | <code><arg></code> elements. See <a
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| 321 | href="../using.html#arg">Command line arguments</a>.</p>
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| 322 | <h4>srcfile</h4>
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| 323 | <p>By default the file names of the source files will be added to the
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| 324 | end of the command line (unless you set addsourcefile to
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| 325 | <code>false</code>). If you need to place it somewhere different,
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| 326 | use a nested <code><srcfile></code> element between your
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| 327 | <code><arg></code> elements to mark the insertion point.</p>
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| 328 | <h4>targetfile</h4>
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| 329 | <p><code><targetfile></code> is similar to
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| 330 | <code><srcfile></code> and marks the position of the target
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| 331 | filename on the command line. If omitted, the target filenames will
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| 332 | not be added to the command line at all. This element can only be
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| 333 | specified if you also define a nested mapper.</p>
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| 334 | <h4>env</h4>
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| 335 | <p>It is possible to specify environment variables to pass to the
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| 336 | system command via nested <code><env></code> elements. See the
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| 337 | description in the section about <a href="exec.html#env">exec</a></p>
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| 338 | <h4>redirector</h4>
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| 339 | <i><b>Since Ant 1.6.2</b></i>
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| 340 | <p>A nested <a href="../CoreTypes/redirector.html">I/O Redirector</a>
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| 341 | can be specified. <apply>'s behavior is like that of
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| 342 | <a href="exec.html#redirector">exec</a> with regard to
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| 343 | redirectors, with the exception that, in non-<i>parallel</i> mode,
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| 344 | file mapping will take place with each iteration. This grants the
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| 345 | user the capacity to receive input from, and send output to, different
|
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| 346 | files for each sourcefile.
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| 347 | </p>
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| 348 | <h3>Examples</h3>
|
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| 349 | <blockquote><pre>
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| 350 | <apply executable="ls">
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| 351 | <arg value="-l"/>
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| 352 | <fileset dir="/tmp">
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| 353 | <patternset>
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| 354 | <exclude name="**/*.txt"/>
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| 355 | </patternset>
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| 356 | </fileset>
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| 357 | <fileset refid="other.files"/>
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| 358 | </apply>
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| 359 | </pre></blockquote>
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| 360 | <p>invokes <code>ls -l</code>, adding the absolute filenames of all
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| 361 | files below <code>/tmp</code> not ending in <code>.txt</code> and all
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| 362 | files of the FileSet with <code>id</code> <code>other.files</code> to
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| 363 | the command line.</p>
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| 364 | <blockquote><pre>
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| 365 | <apply executable="somecommand" parallel="false">
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| 366 | <arg value="arg1"/>
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| 367 | <srcfile/>
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| 368 | <arg value="arg2"/>
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| 369 | <fileset dir="/tmp"/>
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| 370 | </apply>
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| 371 | </pre></blockquote>
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| 372 | <p>invokes <code>somecommand arg1 SOURCEFILENAME arg2</code> for each
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| 373 | file in <code>/tmp</code> replacing SOURCEFILENAME with the absolute
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| 374 | filename of each file in turn. If <code>parallel</code> had been set
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| 375 | to true, SOURCEFILENAME would be replaced with the absolute filenames
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| 376 | of all files separated by spaces.</p>
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| 377 | <blockquote><pre>
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| 378 | <apply executable="cc" dest="src/C" parallel="false">
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| 379 | <arg value="-c"/>
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| 380 | <arg value="-o"/>
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| 381 | <targetfile/>
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| 382 | <srcfile/>
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| 383 | <fileset dir="src/C" includes="*.c"/>
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| 384 | <mapper type="glob" from="*.c" to="*.o"/>
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| 385 | </apply>
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| 386 | </pre></blockquote>
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| 387 | <p>invokes <code>cc -c -o TARGETFILE SOURCEFILE</code> for each
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| 388 | <code>.c</code> file that is newer than the corresponding
|
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| 389 | <code>.o</code>, replacing TARGETFILE with the absolute filename of
|
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| 390 | the <code>.o</code> and SOURCEFILE with the absolute name of the
|
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| 391 | <code>.c</code> file.</p>
|
|---|
| 392 | <blockquote><pre>
|
|---|
| 393 | <mapper id="out" type="glob"
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| 394 | from="src${file.separator}*.file"
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| 395 | to="dest${file.separator}*.out"/>
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| 396 |
|
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| 397 | <apply executable="processfile" dest="dest">
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| 398 | <fileset dir="src" includes="*.file"/>
|
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| 399 | <mapper refid="out"/>
|
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| 400 | <redirector>
|
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| 401 | <outputmapper refid="out"/>
|
|---|
| 402 | </redirector>
|
|---|
| 403 | </apply>
|
|---|
| 404 | </pre></blockquote>
|
|---|
| 405 | Applies the fictitious "processfile" executable to all
|
|---|
| 406 | files matching <code>*.file</code> in the <code>src</code> directory.
|
|---|
| 407 | The <code>out</code> <code><mapper></code> has been set up to map
|
|---|
| 408 | <code>*.file</code> to <code>*.out</code>, then this <code><mapper></code>
|
|---|
| 409 | is used to specify <code>targetfile</code>s for this <apply>
|
|---|
| 410 | task. A reference to <code>out</code> is then used as an
|
|---|
| 411 | <code><outputmapper></code> nested in a <code><redirector></code>, which in turn is
|
|---|
| 412 | nested beneath this <code><apply></code> instance. This allows us to perform
|
|---|
| 413 | dependency checking against output files--the target files in this case.
|
|---|
| 414 | <blockquote><pre>
|
|---|
| 415 | <apply executable="ls" parallel="true"
|
|---|
| 416 | force="true" dest="${basedir}" append="true" type="both">
|
|---|
| 417 | <path>
|
|---|
| 418 | <pathelement path="${env.PATH}"/>
|
|---|
| 419 | </path>
|
|---|
| 420 | <identitymapper/>
|
|---|
| 421 | </apply>
|
|---|
| 422 | </pre></blockquote>
|
|---|
| 423 | Applies the "ls" executable to all directories in the PATH, effectively
|
|---|
| 424 | listing all executables that are available on the PATH.
|
|---|
| 425 |
|
|---|
| 426 | <blockquote><pre>
|
|---|
| 427 | <apply executable="jsmin" addsourcefile="false">
|
|---|
| 428 | <!-- Collect the JS-files -->
|
|---|
| 429 | <fileset dir="src" includes="*.js"/>
|
|---|
| 430 | <redirector>
|
|---|
| 431 | <!-- redirect STDIN; fileset collects relative to its dir, but we need -->
|
|---|
| 432 | <!-- relative to basedir -->
|
|---|
| 433 | <inputmapper type="glob" from="*" to="src/*"/>
|
|---|
| 434 | <!-- redirect STDOUT to file in dest-dir -->
|
|---|
| 435 | <outputmapper id="out" type="glob" from="*.js" to="dest/*.js"/>
|
|---|
| 436 | </redirector>
|
|---|
| 437 | </apply>
|
|---|
| 438 | </pre></blockquote>
|
|---|
| 439 | Conversion of the command <code>jsmin < src/a.js > dest/a.js</code> but for
|
|---|
| 440 | all files in the src-directory. Because the filename itself should not be passed
|
|---|
| 441 | to the <code>jsmin</code> program, the <code>addsourcefile</code> is set to
|
|---|
| 442 | <code>false</code>.
|
|---|
| 443 |
|
|---|
| 444 |
|
|---|
| 445 |
|
|---|
| 446 |
|
|---|
| 447 |
|
|---|
| 448 |
|
|---|
| 449 | </body>
|
|---|
| 450 | </html>
|
|---|
