Add PEAR package extractor that honours package.xml formats
Alexey Prilipko
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Downloader;
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use Composer\Util\Filesystem;
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/**
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* Extractor for pear packages.
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*
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* Composer cannot rely on tar files structure when place it inside package target dir. Correct source files
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* disposition must be read from package.xml
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* This extract pear package source files to target dir.
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*
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* @author Alexey Prilipko <palex@farpost.com>
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*/
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class PearPackageExtractor
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{
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/** @var Filesystem */
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private $filesystem;
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private $file;
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public function __construct($file)
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{
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if (!is_file($file)) {
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throw new \UnexpectedValueException('PEAR package file is not found at '.$file);
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}
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$this->file = $file;
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}
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/**
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* Installs PEAR source files according to package.xml definitions and removes extracted files
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*
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* @param $file string path to downloaded PEAR archive file
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* @param $target string target install location. all source installation would be performed relative to target path.
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* @param $role string type of files to install. default role for PEAR source files are 'php'.
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*
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* @throws \RuntimeException
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*/
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public function extractTo($target, $role = 'php')
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{
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$this->filesystem = new Filesystem();
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$extractionPath = $target.'/tarball';
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try {
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$archive = new \PharData($this->file);
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$archive->extractTo($extractionPath, null, true);
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if (!is_file($this->combine($extractionPath, '/package.xml'))) {
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throw new \RuntimeException('Invalid PEAR package. It must contain package.xml file.');
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}
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$fileCopyActions = $this->buildCopyActions($extractionPath, $role);
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$this->copyFiles($fileCopyActions, $extractionPath, $target);
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$this->filesystem->removeDirectory($extractionPath);
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} catch (\Exception $exception) {
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throw new \UnexpectedValueException(sprintf('Failed to extract PEAR package %s to %s. Reason: %s', $this->file, $target, $exception->getMessage()), 0, $exception);
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}
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}
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/**
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* Perform copy actions on files
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*
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* @param $files array array('from', 'to') with relative paths
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* @param $source string path to source dir.
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* @param $target string path to destination dir
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*/
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private function copyFiles($files, $source, $target)
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{
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foreach ($files as $file) {
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$from = $this->combine($source, $file['from']);
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$to = $this->combine($target, $file['to']);
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$this->copyFile($from, $to);
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}
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}
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private function copyFile($from, $to)
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{
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if (!is_file($from)) {
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throw new \RuntimeException('Invalid PEAR package. package.xml defines file that is not located inside tarball.');
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}
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$this->filesystem->ensureDirectoryExists(dirname($to));
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if (!copy($from, $to)) {
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throw new \RuntimeException(sprintf('Failed to copy %s to %s', $from, $to));
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}
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}
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/**
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* Builds list of copy and list of remove actions that would transform extracted PEAR tarball into installed package.
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*
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* @param $source string path to extracted files.
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* @param $role string package file types to extract.
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* @return array array of 'source' => 'target', where source is location of file in the tarball (relative to source
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* path, and target is destination of file (also relative to $source path)
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* @throws \RuntimeException
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*/
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private function buildCopyActions($source, $role)
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{
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/** @var $package \SimpleXmlElement */
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$package = simplexml_load_file($this->combine($source, 'package.xml'));
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if(false === $package)
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throw new \RuntimeException('Package definition file is not valid.');
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$packageSchemaVersion = $package['version'];
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if ($packageSchemaVersion == '1.0') {
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$children = $package->release->filelist->children();
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$packageName = (string) $package->name;
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$packageVersion = (string) $package->release->version;
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$sourceDir = $packageName . '-' . $packageVersion;
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$result = $this->buildSourceList10($children, $role, $sourceDir);
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} elseif ($packageSchemaVersion == '2.0') {
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$children = $package->contents->children();
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$packageName = (string) $package->name;
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$packageVersion = (string) $package->version->release;
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$sourceDir = $packageName . '-' . $packageVersion;
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$result = $this->buildSourceList20($children, $role, $sourceDir);
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} else {
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throw new \RuntimeException('Unsupported schema version of package definition file.');
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}
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return $result;
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}
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private function buildSourceList10($children, $targetRole, $source = '', $target = '', $role = null)
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{
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$result = array();
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// enumerating files
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foreach ($children as $child) {
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/** @var $child \SimpleXMLElement */
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if ($child->getName() == 'dir') {
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$dirSource = $this->combine($source, (string) $child['name']);
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$dirTarget = $child['baseinstalldir'] ? : $target;
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$dirRole = $child['role'] ? : $role;
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$dirFiles = $this->buildSourceList10($child->children(), $targetRole, $dirSource, $dirTarget, $dirRole);
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$result = array_merge($result, $dirFiles);
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} elseif ($child->getName() == 'file') {
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if (($child['role'] ? : $role) == $targetRole) {
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$fileName = (string) ($child['name'] ? : $child[0]); // $child[0] means text content
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$fileSource = $this->combine($source, $fileName);
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$fileTarget = $this->combine((string) $child['baseinstalldir'] ? : $target, $fileName);
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$result[] = array('from' => $fileSource, 'to' => $fileTarget);
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}
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}
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}
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return $result;
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}
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private function buildSourceList20($children, $targetRole, $source = '', $target = '', $role = null)
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{
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$result = array();
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// enumerating files
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foreach ($children as $child) {
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/** @var $child \SimpleXMLElement */
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if ($child->getName() == 'dir') {
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$dirSource = $this->combine($source, $child['name']);
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$dirTarget = $child['baseinstalldir'] ? : $target;
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$dirRole = $child['role'] ? : $role;
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$dirFiles = $this->buildSourceList20($child->children(), $targetRole, $dirSource, $dirTarget, $dirRole);
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$result = array_merge($result, $dirFiles);
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} elseif ($child->getName() == 'file') {
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if (($child['role'] ? : $role) == $targetRole) {
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$fileSource = $this->combine($source, (string) $child['name']);
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$fileTarget = $this->combine((string) ($child['baseinstalldir'] ? : $target), (string) $child['name']);
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$result[] = array('from' => $fileSource, 'to' => $fileTarget);
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}
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}
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}
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return $result;
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}
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private function combine($left, $right)
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{
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return rtrim($left, '/') . '/' . ltrim($right, '/');
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}
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}
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@ -0,0 +1,21 @@
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<?xml version="1.0" encoding="ISO-8859-1" ?>
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<!DOCTYPE package SYSTEM "http://pear.php.net/dtd/package-1.0">
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<package version="1.0" packagerversion="1.4.0a4">
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<!-- stripped version of package-->
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<name>PEAR_Frontend_Gtk</name>
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<summary>Gtk (Desktop) PEAR Package Manager</summary>
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<release>
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<version>0.4.0</version>
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<date>2005-03-14</date>
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<license>PHP License</license>
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<state>beta</state>
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<notes>Implement channels, support PEAR 1.4.0 (Greg Beaver)
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Tidy up logging a little.
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</notes>
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<filelist>
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<file role="php" baseinstalldir="PEAR/Frontend" md5sum="3edf486653e75f4aac78c1d9d52e72ad" name="Gtk.php"/>
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<file role="php" baseinstalldir="PEAR/Frontend" md5sum="d9847b8a0f3e2987f250c5112ef4032a" name="Gtk/Config.php"/>
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<file role="php" baseinstalldir="PEAR/Frontend" md5sum="a65ef13fb4c2080404b465af28f67fe3" name="Gtk/xpm/black_close_icon.xpm"/>
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</filelist>
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</release>
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</package>
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@ -0,0 +1,19 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<package packagerversion="1.6.0" version="2.0" xmlns="http://pear.php.net/dtd/package-2.0" xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0 http://pear.php.net/dtd/tasks-1.0.xsd http://pear.php.net/dtd/package-2.0 http://pear.php.net/dtd/package-2.0.xsd">
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<!-- stripped version of package-->
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<name>Net_URL</name>
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<channel>pear.php.net</channel>
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<summary>Easy parsing of Urls</summary>
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<description>Provides easy parsing of URLs and their constituent parts.</description>
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<version>
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<release>1.0.15</release>
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<api>1.0.15</api>
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</version>
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<contents>
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<dir name="/">
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<file baseinstalldir="Net" md5sum="af793351a5f00e31a2df697b54cfbc02" name="docs/example.php" role="doc" />
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<file baseinstalldir="Net" md5sum="0488b5531c31332113100971be7ba2d9" name="docs/6470.php" role="doc" />
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<file baseinstalldir="Net" md5sum="c7e690d656b56cc48a12399331a35b27" name="URL.php" role="php" />
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</dir>
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</contents>
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</package>
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@ -0,0 +1,60 @@
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Test\Downloader;
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use Composer\Downloader\PearPackageExtractor;
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class PearPackageExtractorTest extends \PHPUnit_Framework_TestCase
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{
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public function testShouldExtractPackage_1_0()
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{
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$extractor = $this->getMockForAbstractClass('Composer\Downloader\PearPackageExtractor', array(), '', false);
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$method = new \ReflectionMethod($extractor, 'buildCopyActions');
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$method->setAccessible(true);
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$fileActions = $method->invoke($extractor, __DIR__ . '/Fixtures/Package_v1.0', 'php');
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$expectedFileActions = array(
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0 => Array(
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'from' => 'PEAR_Frontend_Gtk-0.4.0/Gtk.php',
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'to' => 'PEAR/Frontend/Gtk.php',
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),
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1 => Array(
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'from' => 'PEAR_Frontend_Gtk-0.4.0/Gtk/Config.php',
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'to' => 'PEAR/Frontend/Gtk/Config.php',
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),
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2 => Array(
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'from' => 'PEAR_Frontend_Gtk-0.4.0/Gtk/xpm/black_close_icon.xpm',
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'to' => 'PEAR/Frontend/Gtk/xpm/black_close_icon.xpm',
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)
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);
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$this->assertSame($expectedFileActions, $fileActions);
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}
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public function testShouldExtractPackage_2_0()
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{
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$extractor = $this->getMockForAbstractClass('Composer\Downloader\PearPackageExtractor', array(), '', false);
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$method = new \ReflectionMethod($extractor, 'buildCopyActions');
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$method->setAccessible(true);
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$fileActions = $method->invoke($extractor, __DIR__ . '/Fixtures/Package_v2.0', 'php');
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$expectedFileActions = array(
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0 => Array(
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'from' => 'Net_URL-1.0.15/URL.php',
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'to' => 'Net/URL.php',
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)
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);
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$this->assertSame($expectedFileActions, $fileActions);
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}
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}
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