I’m using phing to automate a deploy of a php web application to production, phing is a really powerful tool (and easy to use), AdhocTaskdefTask allow to implement custom tags with input and output parameters, for example, I needed to adjust some relative path in production, there’s a simple adhoc task to get the new paths:
<!--
Usage:
<relative-path from="${from}" to="${to}"
output="project_property" />
-->
<adhoc-task name="relative-path"><![CDATA[
class RelativePath extends Task {
private $from;
private $to;
private $output;
function setFrom($from) {
$this->from = $from;
}
function setTo($to) {
$this->to = $to;
}
function setOutput($output=null) {
$this->output = $output;
}
function main() {
$relpath = $this->find_relative_path($this->from, $this->to);
$this->log("relpath = " . $relpath);
if ($this->output != null) {
$this->project->setProperty($this->output, $relpath);
}
}
/**
* credits: https://gist.github.com/ohaal/2936041
* Find the relative file system path between two file system paths
*
* @param string $frompath Path to start from
* @param string $topath Path we want to end up in
*
* @return string Path leading from $frompath to $topath
*/
function find_relative_path ( $frompath, $topath ) {
$from = explode( DIRECTORY_SEPARATOR, $frompath ); // Folders/File
$to = explode( DIRECTORY_SEPARATOR, $topath ); // Folders/File
$relpath = '';
$i = 0;
// Find how far the path is the same
while ( isset($from[$i]) && isset($to[$i]) ) {
if ( $from[$i] != $to[$i] ) break;
$i++;
}
$j = count( $from ) - 1;
// Add '..' until the path is the same
while ( $i <= $j ) {
if ( !empty($from[$j]) ) $relpath .= '..'.DIRECTORY_SEPARATOR;
$j--;
}
// Go to folder from where it starts differing
while ( isset($to[$i]) ) {
if ( !empty($to[$i]) ) $relpath .= $to[$i].DIRECTORY_SEPARATOR;
$i++;
}
// Strip last separator
return substr($relpath, 0, -1);
}
}
]]></adhoc-task>