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/*
* $Id: ReflexiveTask.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/TaskPhing.php';
/**
* This task is for using filter chains to make changes to files and overwrite the original files.
*
* This task was created to serve the need for "cleanup" tasks -- e.g. a ReplaceRegexp task or strip task
* being used to modify files and then overwrite the modified files. In many (most?) cases you probably
* should just use a copy task to preserve the original source files, but this task supports situations
* where there is no src vs. build directory, and modifying source files is actually desired.
*
* <code>
* <reflexive>
* <fileset dir=".">
* <include pattern="*.html">
* </fileset>
* <filterchain>
* <replaceregexp>
* <regexp pattern="\n\r" replace="\n"/>
* </replaceregexp>
* </filterchain>
* </reflexive>
* </code>
*
* @author Hans Lellelid <hans@xmpl.org>
* @version $Revision: 1.11 $
* @package phing.tasks.system
*/
class ReflexiveTask extends TaskPhing {
/** Single file to process. */
private $file;
/** Any filesets that should be processed. */
private $filesets = array();
/** Any filters to be applied before append happens. */
private $filterChains = array();
/** Alias for setFrom() */
function setFile(PhingFile $f) {
$this->file = $f;
}
/** Nested creator, adds a set of files (nested fileset attribute). */
function createFileSet() {
$num = array_push($this->filesets, new FileSet());
return $this->filesets[$num-1];
}
/**
* Creates a filterchain
*
* @return object The created filterchain object
*/
function createFilterChain() {
$num = array_push($this->filterChains, new FilterChain($this->project));
return $this->filterChains[$num-1];
}
/** Append the file(s). */
function main() {
if ($this->file === null && empty($this->filesets)) {
throw new BuildException("You must specify a file or fileset(s) for the <reflexive> task.");
}
// compile a list of all files to modify, both file attrib and fileset elements
// can be used.
$files = array();
if ($this->file !== null) {
$files[] = $this->file;
}
if (!empty($this->filesets)) {
$filenames = array();
foreach($this->filesets as $fs) {
try {
$ds = $fs->getDirectoryScanner($this->project);
$filenames = $ds->getIncludedFiles(); // get included filenames
$dir = $fs->getDir($this->project);
foreach ($filenames as $fname) {
$files[] = new PhingFile($dir, $fname);
}
} catch (BuildException $be) {
$this->log($be->getMessage(), PROJECT_MSG_WARN);
}
}
}
$this->log("Applying reflexive processing to " . count($files) . " files.");
// These "slots" allow filters to retrieve information about the currently-being-process files
$slot = $this->getRegisterSlot("currentFile");
$basenameSlot = $this->getRegisterSlot("currentFile.basename");
foreach($files as $file) {
// set the register slots
$slot->setValue($file->getPath());
$basenameSlot->setValue($file->getName());
// 1) read contents of file, pulling through any filters
$in = null;
try {
$contents = "";
$in = FileUtils::getChainedReader(new FileReader($file), $this->filterChains, $this->project);
while(-1 !== ($buffer = $in->read())) {
$contents .= $buffer;
}
$in->close();
} catch (Exception $e) {
if ($in) $in->close();
$this->log("Erorr reading file: " . $e->getMessage(), PROJECT_MSG_WARN);
}
try {
// now create a FileWriter w/ the same file, and write to the file
$out = new FileWriter($file);
$out->write($contents);
$out->close();
$this->log("Applying reflexive processing to " . $file->getPath(), PROJECT_MSG_VERBOSE);
} catch (Exception $e) {
if ($out) $out->close();
$this->log("Error writing file back: " . $e->getMessage(), PROJECT_MSG_WARN);
}
}
}
} |