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<?php
/*
* $Id: DefaultInputHandler.php,v 1.6 2004/02/27 18:49:13 hlellelid Exp $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
require_once 'phing/input/InputHandler.php';
include_once 'phing/system/io/ConsoleReader.php';
/**
* Prompts using print(); reads input from Console.
*
* @author Hans Lellelid <hans@xmpl.org> (Phing)
* @author Stefan Bodewig <stefan.bodewig@epost.de> (Ant)
* @version $Revision: 1.6 $
* @package phing.input
*/
class DefaultInputHandler implements InputHandler {
/**
* Prompts and requests input. May loop until a valid input has
* been entered.
* @throws BuildException
*/
public function handleInput(InputRequest $request) {
$prompt = $this->getPrompt($request);
$in = new ConsoleReader();
do {
print $prompt;
try {
$input = $in->readLine();
if ($input === "" && ($request->getDefaultValue() !== null) ) {
$input = $request->getDefaultValue();
}
$request->setInput($input);
} catch (Exception $e) {
throw new BuildException("Failed to read input from Console.", $e);
}
} while (!$request->isInputValid());
}
/**
* Constructs user prompt from a request.
*
* <p>This implementation adds (choice1,choice2,choice3,...) to the
* prompt for <code>MultipleChoiceInputRequest</code>s.</p>
*
* @param $request the request to construct the prompt for.
* Must not be <code>null</code>.
*/
protected function getPrompt(InputRequest $request) {
$prompt = $request->getPrompt();
// use is_a() to avoid needing the class to be loaded
if (is_a($request, 'YesNoInputRequest')) { // (yes/no)
$prompt .= '(' . implode('/', $request->getChoices()) .')';
} elseif (is_a($request, 'MultipleChoiceInputRequest')) { // (a,b,c,d)
$prompt .= '(' . implode(',', $request->getChoices()) . ')';
}
if ($request->getDefaultValue() !== null) {
$prompt .= ' ['.$request->getDefaultValue().']';
}
$pchar = $request->getPromptChar();
return $prompt . ($pchar ? $pchar . ' ' : ' ');
}
}
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