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<?php
/*
* $Id: TokenSource.php,v 1.7 2004/03/18 20:44:26 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/types/DataType.php';
include_once 'phing/util/StringHelper.php';
/**
* A parameter is composed of a name, type and value.
*
* Example of usage:
*
* <replacetokens>
* <tokensource classname="phing.filters.util.IniFileTokenReader">
* <!-- all params for the TokenReader here -->
* <param name="file" value="tokens.ini" />
* </tokensource>
* </replacetokens>
*
* or:
*
* <filterreader classname="phing.filters.ReplaceTokens">
* <param type="tokensource>
* <param name="classname" value="phing.filters.util.IniFileTokenReader" />
* <param name="file" value="tokens.ini" />
* </param>
* </filterreader>
*
* @author <a href="mailto:yl@seasonfive.com">Yannick Lecaillez</a>
* @package phing.types
*/
class TokenSource extends DataType {
/**
* String to hold the path to the TokenReader
* @var string
*/
protected $classname = null;
/**
* Array holding parameters for the wrapped TokenReader.
* @var array
*/
protected $parameters = array();
/**
* Reference to the TokenReader used by this TokenSource
* @var TokenReader
*/
protected $reader;
/**
* Array with key/value pairs of tokens
*/
protected $tokens = array();
/**
* This method is called to load the sources from the reader
* into the buffer of the source.
*/
function load() {
// Create new Reader
if ($this->classname === null) {
throw new BuildException("No Classname given to TokenSource.");
}
$classname = Phing::import($this->classname);
$this->reader = new $classname($this->project);
// Configure Reader
$this->configureTokenReader($this->reader);
// Load Tokens
try {
while ($token = $this->reader->readToken()) {
$this->tokens[] = $token;
}
} catch (BuildException $e) {
$this->log("Error reading TokenSource: " . $e->getMessage(), PROJECT_MSG_WARN);
} catch (IOException $e) {
$this->log("Error reading TokenSource: " . $e->getMessage(), PROJECT_MSG_WARN);
}
}
/**
* This function uses the wrapper to read the tokens and then
* returns them.
*
* @access public
*/
function getTokens() {
if ($this->tokens === null)
$this->Load();
return $this->tokens;
}
/**
* Configures a TokenReader with the parameters passed to the
* TokenSource.
* @param TokenReader $reader
*/
private function configureTokenReader(TokenReader $reader) {
$count = count($this->parameters);
for ($i = 0; $i < $count; $i++) {
$method_name = "Set" . $this->parameters[$i]->getName();
$value = $this->parameters[$i]->getValue();
$reader->$method_name($value);
}
}
/**
* Set the classname (dot-path) to use for handling token replacement.
* @param string $c
*/
function setClassname($c) {
$this->classname = $c;
}
/**
* Returns the qualified classname (dot-path) to use for handling token replacement.
* @return string
*/
function getClassname() {
return $this->classname;
}
/**
* Create nested <param> tag.
* Uses standard name/value Parameter class.
* @return Parameter
*/
function createParam() {
$num = array_push($this->parameters, new Parameter());
return $this->parameters[$num-1];
}
}
?>
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