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Diffstat (limited to 'buildscripts/phing/classes/phing/tasks/system/PhpEvalTask.php')
| -rw-r--r-- | buildscripts/phing/classes/phing/tasks/system/PhpEvalTask.php | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/buildscripts/phing/classes/phing/tasks/system/PhpEvalTask.php b/buildscripts/phing/classes/phing/tasks/system/PhpEvalTask.php new file mode 100644 index 00000000..f1b72815 --- /dev/null +++ b/buildscripts/phing/classes/phing/tasks/system/PhpEvalTask.php @@ -0,0 +1,169 @@ +<?php +/* + * $Id: PhpEvalTask.php 59 2006-04-28 14:49:47Z mrook $ + * + * 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/Task.php'; + +/** + * Executes PHP function or evaluates expression and sets return value to a property. + * + * WARNING: + * This task can, of course, be abused with devastating effects. E.g. do not + * modify internal Phing classes unless you know what you are doing. + * + * @author Hans Lellelid <hans@xmpl.org> + * @version $Revision: 1.7 $ + * @package phing.tasks.system + * + * @todo Add support for evaluating expressions + */ +class PhpEvalTask extends Task { + + protected $expression; // Expression to evaluate + protected $function; // Function to execute + protected $class; // Class containing function to execute + protected $returnProperty; // name of property to set to return value + protected $params = array(); // parameters for function calls + + /** Main entry point. */ + function main() { + + if ($this->function === null && $this->expression === null) { + throw new BuildException("You must specify a function to execute or PHP expression to evalute.", $this->location); + } + + if ($this->function !== null && $this->expression !== null) { + throw new BuildException("You can specify function or expression, but not both.", $this->location); + } + + if ($this->expression !== null && !empty($this->params)) { + throw new BuildException("You cannot use nested <param> tags when evaluationg a PHP expression.", $this->location); + } + + $retval = null; + if ($this->function !== null) { + $retval = $this->callFunction(); + } elseif ($this->expression !== null) { + $retval = $this->evalExpression(); + } + + if ($this->returnProperty !== null) { + $this->project->setProperty($this->returnProperty, $retval); + } + } + + /** + * Calls function and returns results. + * @return mixed + */ + protected function callFunction() { + + if ($this->class !== null) { + // import the classname & unqualify it, if necessary + $this->class = Phing::import($this->class); + + $user_func = array($this->class, $this->function); + $h_func = $this->class . '::' . $this->function; // human-readable (for log) + } else { + $user_func = $this->function; + $h_func = $user_func; // human-readable (for log) + } + + // put parameters into simple array + $params = array(); + foreach($this->params as $p) { + $params[] = $p->getValue(); + } + + $this->log("Calling PHP function: " . $h_func . "()"); + foreach($params as $p) { + $this->log(" param: " . $p, PROJECT_MSG_VERBOSE); + } + + $return = call_user_func_array($user_func, $params); + return $return; + } + + /** + * Evaluates expression and returns resulting value. + * @return mixed + */ + protected function evalExpression() { + $this->log("Evaluating PHP expression: " . $this->expression); + if (!StringHelper::endsWith(';', trim($this->expression))) { + $this->expression .= ';'; + } + $retval = null; + eval('$retval = ' . $this->expression); + return $retval; + } + + /** Set function to execute */ + public function setFunction($f) { + $this->function = $f; + } + + /** Set [static] class which contains function to execute */ + public function setClass($c) { + $this->class = $c; + } + + /** Sets property name to set with return value of function or expression.*/ + public function setReturnProperty($r) { + $this->returnProperty = $r; + } + + /** Set PHP expression to evaluate. */ + public function addText($expression) { + $this->expression = $expression; + } + + /** Set PHP expression to evaluate. */ + public function setExpression($expression) { + $this->expression = $expression; + } + + /** Add a nested <param> tag. */ + public function createParam() { + $p = new FunctionParam(); + $this->params[] = $p; + return $p; + } +} + +/** + * Supports the <param> nested tag for PhpTask. + */ +class FunctionParam { + + private $val; + + public function setValue($v) { + $this->val = $v; + } + + public function addText($v) { + $this->val = $v; + } + + public function getValue() { + return $this->val; + } +}
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