Phing Timestamp: The tstamp task returns a PHP warning if the default timezone isn't set in the install. Rather than suppressing warnings, this adds the timezone setting, and additionally checks that the function exists so Phing doesn't break

TstampTask.php

<?php
/*
 *  $Id: TstampTask.php 557 2009-08-29 13:54:38Z 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';

/**
 * Sets properties to the current time, or offsets from the current time.
 * The default properties are TSTAMP, DSTAMP and TODAY;
 *
 * Based on Ant's Tstamp task.
 * 
 * @author   Michiel Rook <[email protected]>
 * @version  $Revision: 557 $
 * @package  phing.tasks.system
 * @since    2.2.0
 */
class TstampTask extends Task
{
    private $customFormats = array();
    
    private $prefix = "";
    
    /**
     * Set a prefix for the properties. If the prefix does not end with a "."
     * one is automatically added.
     * @param prefix the prefix to use.
     */
    public function setPrefix($prefix)
    {
        $this->prefix = $prefix;
        
        if (!empty($this->prefix))
        {
            $this->prefix.= ".";
        }
    }
    
    /**
     * Adds a custom format
     *
     * @param TstampCustomFormat custom format
     */
    public function addFormat(TstampCustomFormat $cf)
    {
        $this->customFormats[] = $cf;
    }

    /**
     * Create the timestamps. Custom ones are done before
     * the standard ones.
     *
     * @throws BuildException
     */
    public function main()
    {
        foreach ($this->customFormats as $cf)
        {
            $cf->execute($this);
        }
        
        $dstamp = strftime('%Y%m%d');
        $this->prefixProperty('DSTAMP', $dstamp);
        
        $tstamp = strftime('%H%M');
        $this->prefixProperty('TSTAMP', $tstamp);
        
        $today = strftime('%B %d %Y');
        $this->prefixProperty('TODAY', $today);
    }
    
    /**
     * helper that encapsulates prefix logic and property setting
     * policy (i.e. we use setNewProperty instead of setProperty).
     */
    public function prefixProperty($name, $value)
    {
        $this->getProject()->setNewProperty($this->prefix . $name, $value);
    }
}

/**
 * @package  phing.tasks.system
 */
class TstampCustomFormat
{
    private $propertyName = "";
    private $pattern = "";
    private $locale = "";
    
    /**
     * The property to receive the date/time string in the given pattern
     *
     * @param propertyName the name of the property.
     */
    public function setProperty($propertyName)
    {
        $this->propertyName = $propertyName;
    }

    /**
     * The date/time pattern to be used. The values are as
     * defined by the PHP strftime() function.
     *
     * @param pattern
     */
    public function setPattern($pattern)
    {
        $this->pattern = $pattern;
    }
    
    /**
     * The locale used to create date/time string.
     *
     * @param locale
     */
    public function setLocale($locale)
    {
        $this->locale = $locale;
    }
    
    /**
     * validate parameter and execute the format.
     *
     * @param TstampTask reference to task
     */
    public function execute(TstampTask $tstamp)
    {
        if (empty($this->propertyName))
        {
            throw new BuildException("property attribute must be provided");
        }

        if (empty($this->pattern))
        {
            throw new BuildException("pattern attribute must be provided");
        }
        
        if (!empty($this->locale))
        {
            setlocale(LC_ALL, $this->locale);
        }
        if (function_exists('date_default_timezone_set'))
	{
		date_default_timezone_set('Europe/London');
	}
        $value = strftime($this->pattern);
        $tstamp->prefixProperty($this->propertyName, $value);
        
        if (!empty($this->locale))
        {
            // reset locale
            setlocale(LC_ALL, NULL);
        }
    }
}

Thanks for this gist.

Out of interest, have you submitted this for inclusion into Phing? I'd like the <tstamp> task to be able to take a timezone, either in the base tag or the <format /> child tag. I have a server that I am not permitted to reset the TZ settings on, and I'd like to be able to use this task without hacking my copy of Phing (I am presently using the latest Phar build).

So, whilst I don't know Phing very well, it presently seems to me that the build.xml is the only place I can reset this! Perhaps as a hack I can get a custom task to run a TZ set prior to the <tstamp> being encountered...