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PhutilLibraryConflictException.php
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Mon, Nov 25, 12:20

PhutilLibraryConflictException.php
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<?php
/**
* Thrown when you attempt to load two different copies of a library with the
* same name. Trying to load the second copy of the library will trigger this,
* and the library will not be loaded.
*
* This means you've either done something silly (like tried to explicitly load
* two different versions of the same library into the same program -- this
* won't work because they'll have namespace conflicts), or your configuration
* might have some problems which caused two parts of your program to try to
* load the same library but end up loading different copies of it, or there
* may be some subtle issue like running 'arc' in a different Arcanist working
* directory. (Some bootstrapping workflows like that which run low-level
* library components on other copies of themselves are expected to fail.)
*
* To resolve this, you need to make sure your program loads no more than one
* copy of each libphutil library, but exactly how you approach this depends on
* why it's happening in the first place.
*
* @task info Getting Exception Information
* @task construct Creating Library Conflict Exceptions
*/
final class PhutilLibraryConflictException extends Exception {
private $library;
private $oldPath;
private $newPath;
/**
* Create a new library conflict exception.
*
* @param string The name of the library which conflicts with an existing
* library.
* @param string The path of the already-loaded library.
* @param string The path of the attempting-to-load library.
*
* @task construct
*/
public function __construct($library, $old_path, $new_path) {
$this->library = $library;
$this->oldPath = $old_path;
$this->newPath = $new_path;
parent::__construct(pht(
"Library conflict! The library '%s' has already been loaded (from '%s') ".
"but is now being loaded again from a new location ('%s'). You can not ".
"load multiple copies of the same library into a program.",
$library,
$old_path,
$new_path));
}
/**
* Retrieve the name of the library in conflict.
*
* @return string The name of the library which conflicts with an existing
* library.
* @task info
*/
public function getLibrary() {
return $this->library;
}
/**
* Get the path to the library which has already been loaded earlier in the
* program's execution.
*
* @return string The path of the already-loaded library.
* @task info
*/
public function getOldPath() {
return $this->oldPath;
}
/**
* Get the path to the library which is causing this conflict.
*
* @return string The path of the attempting-to-load library.
* @task info
*/
public function getNewPath() {
return $this->newPath;
}
}

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