Edit C:\apache-ant-1.8.0\docs\manual\CoreTasks\input.html
<!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> <html> <head> <meta http-equiv="Content-Language" content="en-us"> <link rel="stylesheet" type="text/css" href="../stylesheets/style.css"> <title>Input Task</title> </head> <body> <h2><a name="input">Input</a></h2> <h3>Description</h3> <p>Allows user interaction during the build process by prompting for input. To do so, it uses the configured <a href="../inputhandler.html">InputHandler</a>.</p> <p>The prompt can be set via the message attribute or as character data nested into the element.</p> <p>Optionally a set of valid input arguments can be defined via the validargs attribute. Input task will not accept a value that doesn't match one of the predefined.</p> <p>Optionally a property can be created from the value entered by the user. This property can then be used during the following build run. Input behaves according to <a href="property.html">property task</a> which means that existing properties cannot be overriden. Since Ant 1.6, <code><input></code> will not prompt for input if a property should be set by the task that has already been set in the project (and the task wouldn't have any effect).</p> <p>Historically, a regular complaint about this task has been that it echoes characters to the console, this is a critical security defect, we must fix it immediately, etc, etc. This problem was due to the lack in early versions of Java of a (fully functional) facility for handling secure console input. In Java 1.6 that shortcoming in Java's API was addressed and Ant versions 1.7.1 and 1.8 have added support for Java 1.6's secure console input feature (see <a href="#handler.type">handler type</a>).</p> <p> IDE behaviour depends upon the IDE: some hang waiting for input, some let you type it in. For this situation, place the password in a (secured) property file and load in before the input task.</p> <h3>Parameters</h3> <table border="1" cellpadding="2" cellspacing="0"> <tr> <td valign="top"><b>Attribute</b></td> <td valign="top"><b>Description</b></td> <td align="center" valign="top"><b>Required</b></td> </tr> <tr> <td valign="top">message</td> <td valign="top">the Message which gets displayed to the user during the build run.</td> <td valign="top" align="center">No</td> </tr> <tr> <td valign="top">validargs</td> <td valign="top">comma separated String containing valid input arguments. If set, input task will reject any input not defined here. Validargs are compared case sensitive. If you want 'a' and 'A' to be accepted you will need to define both arguments within validargs.</td> <td valign="top" align="center">No</td> </tr> <tr> <td valign="top">addproperty</td> <td valign="top">the name of a property to be created from input. Behaviour is equal to <a href="property.html">property task</a> which means that existing properties cannot be overridden.</td> <td valign="top" align="center">No</td> </tr> <tr> <td valign="top">defaultvalue</td> <td valign="top">Defines the default value of the property to be created from input. Property value will be set to default if no input is received.</td> <td valign="top" align="center">No</td> </tr> </table> <h3>Parameters Specified as Nested Elements</h3> <h4>Handler</h4> <p>Since <b>Ant 1.7</b>, a nested <handler> element can be used to specify an InputHandler, so that different InputHandlers may be used among different Input tasks. <table border="1" cellpadding="2" cellspacing="0"> <tr> <td valign="top"><b>Attribute</b></td> <td valign="top"><b>Description</b></td> <td align="center" valign="top"><b>Required</b></td> </tr> <tr> <td valign="top"><a name="handler.type" />type</td> <td valign="top">one of "default","propertyfile", "greedy", or "secure" (since Ant 1.8). </td> <td align="center" valign="top" rowspan="3">One of these</td> </tr> <tr> <td valign="top">refid</td> <td valign="top">Reference to an <code>InputHandler</code> defined elsewhere in the project. </td> </tr> <tr> <td valign="top">classname</td> <td valign="top">The name of an <code>InputHandler</code> subclass.</td> </tr> <tr> <td valign="top">classpath</td> <td valign="top">The classpath to use with <i>classname</i>.</td> <td valign="top">No</td> </tr> <tr> <td valign="top">classpathref</td> <td valign="top">The refid of a classpath to use with <i>classname</i>.</td> <td valign="top">No</td> </tr> <tr> <td valign="top">loaderref</td> <td valign="top">The refid of a classloader to use with <i>classname</i>. </td> <td valign="top">No</td> </tr> </table> <br /> The classpath can also be specified by means of one or more nested <classpath> elements.</p> <h3>Examples</h3> <pre> <input/></pre> <p>Will pause the build run until return key is pressed when using the <a href="../inputhandler.html#defaulthandler">default InputHandler</a>, the concrete behavior is defined by the InputHandler implementation you use.</p> <pre> <input>Press Return key to continue...</input></pre> <p>Will display the message "Press Return key to continue..." and pause the build run until return key is pressed (again, the concrete behavior is implementation dependent).</p> <pre> <input message="Press Return key to continue..." /></pre> <p>Will display the message "Press Return key to continue..." and pause the build run until return key is pressed (see above).</p> <pre> <input message="All data is going to be deleted from DB continue (y/n)?" validargs="y,n" addproperty="do.delete" /> <condition property="do.abort"> <equals arg1="n" arg2="${do.delete}"/> </condition> <fail if="do.abort">Build aborted by user.</fail> </pre> <p>Will display the message "All data is going to be deleted from DB continue (y/n)?" and require 'y' to continue build or 'n' to exit build with following message "Build aborted by user.".</p> <pre> <input message="Please enter db-username:" addproperty="db.user" /></pre> <p>Will display the message "Please enter db-username:" and set the property <code>db.user</code> to the value entered by the user.</p> <pre> <input message="Please enter db-username:" addproperty="db.user" defaultvalue="Scott-Tiger" /></pre> <p>Same as above, but will set <code>db.user</code> to the value <i>Scott- Tiger</i> if the user enters no value (simply types <return>).</p> </body> </html>
Ms-Dos/Windows
Unix
Write backup
jsp File Browser version 1.2 by
www.vonloesch.de