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lib/symfony/vendor/phing/input/DefaultInputHandler.php

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+<?php
+
+/*
+ *  $Id: DefaultInputHandler.php 3076 2006-12-18 08:52:12Z fabien $
+ *
+ * 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 . ' ' : ' ');
+    } 
+}