X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/timetracker.git/blobdiff_plain/098a79f0819ebb89b7d48df4a6b154af4560f68e..9a23a8c0a51b7ec38a96f525484134f3cb85dc7e:/WEB-INF/lib/pear/PEAR/DependencyDB.php

diff --git a/WEB-INF/lib/pear/PEAR/DependencyDB.php b/WEB-INF/lib/pear/PEAR/DependencyDB.php
new file mode 100644
index 00000000..948f0c9d
--- /dev/null
+++ b/WEB-INF/lib/pear/PEAR/DependencyDB.php
@@ -0,0 +1,769 @@
+<?php
+/**
+ * PEAR_DependencyDB, advanced installed packages dependency database
+ *
+ * PHP versions 4 and 5
+ *
+ * @category   pear
+ * @package    PEAR
+ * @author     Tomas V. V. Cox <cox@idecnet.com>
+ * @author     Greg Beaver <cellog@php.net>
+ * @copyright  1997-2009 The Authors
+ * @license    http://opensource.org/licenses/bsd-license.php New BSD License
+ * @version    CVS: $Id: DependencyDB.php 313023 2011-07-06 19:17:11Z dufuz $
+ * @link       http://pear.php.net/package/PEAR
+ * @since      File available since Release 1.4.0a1
+ */
+
+/**
+ * Needed for error handling
+ */
+require_once 'PEAR.php';
+require_once 'PEAR/Config.php';
+
+$GLOBALS['_PEAR_DEPENDENCYDB_INSTANCE'] = array();
+/**
+ * Track dependency relationships between installed packages
+ * @category   pear
+ * @package    PEAR
+ * @author     Greg Beaver <cellog@php.net>
+ * @author     Tomas V.V.Cox <cox@idec.net.com>
+ * @copyright  1997-2009 The Authors
+ * @license    http://opensource.org/licenses/bsd-license.php New BSD License
+ * @version    Release: 1.9.4
+ * @link       http://pear.php.net/package/PEAR
+ * @since      Class available since Release 1.4.0a1
+ */
+class PEAR_DependencyDB
+{
+    // {{{ properties
+
+    /**
+     * This is initialized by {@link setConfig()}
+     * @var PEAR_Config
+     * @access private
+     */
+    var $_config;
+    /**
+     * This is initialized by {@link setConfig()}
+     * @var PEAR_Registry
+     * @access private
+     */
+    var $_registry;
+    /**
+     * Filename of the dependency DB (usually .depdb)
+     * @var string
+     * @access private
+     */
+    var $_depdb = false;
+    /**
+     * File name of the lockfile (usually .depdblock)
+     * @var string
+     * @access private
+     */
+    var $_lockfile = false;
+    /**
+     * Open file resource for locking the lockfile
+     * @var resource|false
+     * @access private
+     */
+    var $_lockFp = false;
+    /**
+     * API version of this class, used to validate a file on-disk
+     * @var string
+     * @access private
+     */
+    var $_version = '1.0';
+    /**
+     * Cached dependency database file
+     * @var array|null
+     * @access private
+     */
+    var $_cache;
+
+    // }}}
+    // {{{ & singleton()
+
+    /**
+     * Get a raw dependency database.  Calls setConfig() and assertDepsDB()
+     * @param PEAR_Config
+     * @param string|false full path to the dependency database, or false to use default
+     * @return PEAR_DependencyDB|PEAR_Error
+     * @static
+     */
+    function &singleton(&$config, $depdb = false)
+    {
+        $phpdir = $config->get('php_dir', null, 'pear.php.net');
+        if (!isset($GLOBALS['_PEAR_DEPENDENCYDB_INSTANCE'][$phpdir])) {
+            $a = new PEAR_DependencyDB;
+            $GLOBALS['_PEAR_DEPENDENCYDB_INSTANCE'][$phpdir] = &$a;
+            $a->setConfig($config, $depdb);
+            $e = $a->assertDepsDB();
+            if (PEAR::isError($e)) {
+                return $e;
+            }
+        }
+
+        return $GLOBALS['_PEAR_DEPENDENCYDB_INSTANCE'][$phpdir];
+    }
+
+    /**
+     * Set up the registry/location of dependency DB
+     * @param PEAR_Config|false
+     * @param string|false full path to the dependency database, or false to use default
+     */
+    function setConfig(&$config, $depdb = false)
+    {
+        if (!$config) {
+            $this->_config = &PEAR_Config::singleton();
+        } else {
+            $this->_config = &$config;
+        }
+
+        $this->_registry = &$this->_config->getRegistry();
+        if (!$depdb) {
+            $this->_depdb = $this->_config->get('php_dir', null, 'pear.php.net') .
+                DIRECTORY_SEPARATOR . '.depdb';
+        } else {
+            $this->_depdb = $depdb;
+        }
+
+        $this->_lockfile = dirname($this->_depdb) . DIRECTORY_SEPARATOR . '.depdblock';
+    }
+    // }}}
+
+    function hasWriteAccess()
+    {
+        if (!file_exists($this->_depdb)) {
+            $dir = $this->_depdb;
+            while ($dir && $dir != '.') {
+                $dir = dirname($dir); // cd ..
+                if ($dir != '.' && file_exists($dir)) {
+                    if (is_writeable($dir)) {
+                        return true;
+                    }
+
+                    return false;
+                }
+            }
+
+            return false;
+        }
+
+        return is_writeable($this->_depdb);
+    }
+
+    // {{{ assertDepsDB()
+
+    /**
+     * Create the dependency database, if it doesn't exist.  Error if the database is
+     * newer than the code reading it.
+     * @return void|PEAR_Error
+     */
+    function assertDepsDB()
+    {
+        if (!is_file($this->_depdb)) {
+            $this->rebuildDB();
+            return;
+        }
+
+        $depdb = $this->_getDepDB();
+        // Datatype format has been changed, rebuild the Deps DB
+        if ($depdb['_version'] < $this->_version) {
+            $this->rebuildDB();
+        }
+
+        if ($depdb['_version']{0} > $this->_version{0}) {
+            return PEAR::raiseError('Dependency database is version ' .
+                $depdb['_version'] . ', and we are version ' .
+                $this->_version . ', cannot continue');
+        }
+    }
+
+    /**
+     * Get a list of installed packages that depend on this package
+     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2|array
+     * @return array|false
+     */
+    function getDependentPackages(&$pkg)
+    {
+        $data = $this->_getDepDB();
+        if (is_object($pkg)) {
+            $channel = strtolower($pkg->getChannel());
+            $package = strtolower($pkg->getPackage());
+        } else {
+            $channel = strtolower($pkg['channel']);
+            $package = strtolower($pkg['package']);
+        }
+
+        if (isset($data['packages'][$channel][$package])) {
+            return $data['packages'][$channel][$package];
+        }
+
+        return false;
+    }
+
+    /**
+     * Get a list of the actual dependencies of installed packages that depend on
+     * a package.
+     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2|array
+     * @return array|false
+     */
+    function getDependentPackageDependencies(&$pkg)
+    {
+        $data = $this->_getDepDB();
+        if (is_object($pkg)) {
+            $channel = strtolower($pkg->getChannel());
+            $package = strtolower($pkg->getPackage());
+        } else {
+            $channel = strtolower($pkg['channel']);
+            $package = strtolower($pkg['package']);
+        }
+
+        $depend = $this->getDependentPackages($pkg);
+        if (!$depend) {
+            return false;
+        }
+
+        $dependencies = array();
+        foreach ($depend as $info) {
+            $temp = $this->getDependencies($info);
+            foreach ($temp as $dep) {
+                if (
+                    isset($dep['dep'], $dep['dep']['channel'], $dep['dep']['name']) &&
+                    strtolower($dep['dep']['channel']) == $channel &&
+                    strtolower($dep['dep']['name']) == $package
+                ) {
+                    if (!isset($dependencies[$info['channel']])) {
+                        $dependencies[$info['channel']] = array();
+                    }
+
+                    if (!isset($dependencies[$info['channel']][$info['package']])) {
+                        $dependencies[$info['channel']][$info['package']] = array();
+                    }
+                    $dependencies[$info['channel']][$info['package']][] = $dep;
+                }
+            }
+        }
+
+        return $dependencies;
+    }
+
+    /**
+     * Get a list of dependencies of this installed package
+     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2|array
+     * @return array|false
+     */
+    function getDependencies(&$pkg)
+    {
+        if (is_object($pkg)) {
+            $channel = strtolower($pkg->getChannel());
+            $package = strtolower($pkg->getPackage());
+        } else {
+            $channel = strtolower($pkg['channel']);
+            $package = strtolower($pkg['package']);
+        }
+
+        $data = $this->_getDepDB();
+        if (isset($data['dependencies'][$channel][$package])) {
+            return $data['dependencies'][$channel][$package];
+        }
+
+        return false;
+    }
+
+    /**
+     * Determine whether $parent depends on $child, near or deep
+     * @param array|PEAR_PackageFile_v2|PEAR_PackageFile_v2
+     * @param array|PEAR_PackageFile_v2|PEAR_PackageFile_v2
+     */
+    function dependsOn($parent, $child)
+    {
+        $c = array();
+        $this->_getDepDB();
+        return $this->_dependsOn($parent, $child, $c);
+    }
+
+    function _dependsOn($parent, $child, &$checked)
+    {
+        if (is_object($parent)) {
+            $channel = strtolower($parent->getChannel());
+            $package = strtolower($parent->getPackage());
+        } else {
+            $channel = strtolower($parent['channel']);
+            $package = strtolower($parent['package']);
+        }
+
+        if (is_object($child)) {
+            $depchannel = strtolower($child->getChannel());
+            $deppackage = strtolower($child->getPackage());
+        } else {
+            $depchannel = strtolower($child['channel']);
+            $deppackage = strtolower($child['package']);
+        }
+
+        if (isset($checked[$channel][$package][$depchannel][$deppackage])) {
+            return false; // avoid endless recursion
+        }
+
+        $checked[$channel][$package][$depchannel][$deppackage] = true;
+        if (!isset($this->_cache['dependencies'][$channel][$package])) {
+            return false;
+        }
+
+        foreach ($this->_cache['dependencies'][$channel][$package] as $info) {
+            if (isset($info['dep']['uri'])) {
+                if (is_object($child)) {
+                    if ($info['dep']['uri'] == $child->getURI()) {
+                        return true;
+                    }
+                } elseif (isset($child['uri'])) {
+                    if ($info['dep']['uri'] == $child['uri']) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+
+            if (strtolower($info['dep']['channel']) == $depchannel &&
+                  strtolower($info['dep']['name']) == $deppackage) {
+                return true;
+            }
+        }
+
+        foreach ($this->_cache['dependencies'][$channel][$package] as $info) {
+            if (isset($info['dep']['uri'])) {
+                if ($this->_dependsOn(array(
+                        'uri' => $info['dep']['uri'],
+                        'package' => $info['dep']['name']), $child, $checked)) {
+                    return true;
+                }
+            } else {
+                if ($this->_dependsOn(array(
+                        'channel' => $info['dep']['channel'],
+                        'package' => $info['dep']['name']), $child, $checked)) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Register dependencies of a package that is being installed or upgraded
+     * @param PEAR_PackageFile_v2|PEAR_PackageFile_v2
+     */
+    function installPackage(&$package)
+    {
+        $data = $this->_getDepDB();
+        unset($this->_cache);
+        $this->_setPackageDeps($data, $package);
+        $this->_writeDepDB($data);
+    }
+
+    /**
+     * Remove dependencies of a package that is being uninstalled, or upgraded.
+     *
+     * Upgraded packages first uninstall, then install
+     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2|array If an array, then it must have
+     *        indices 'channel' and 'package'
+     */
+    function uninstallPackage(&$pkg)
+    {
+        $data = $this->_getDepDB();
+        unset($this->_cache);
+        if (is_object($pkg)) {
+            $channel = strtolower($pkg->getChannel());
+            $package = strtolower($pkg->getPackage());
+        } else {
+            $channel = strtolower($pkg['channel']);
+            $package = strtolower($pkg['package']);
+        }
+
+        if (!isset($data['dependencies'][$channel][$package])) {
+            return true;
+        }
+
+        foreach ($data['dependencies'][$channel][$package] as $dep) {
+            $found      = false;
+            $depchannel = isset($dep['dep']['uri']) ? '__uri' : strtolower($dep['dep']['channel']);
+            $depname    = strtolower($dep['dep']['name']);
+            if (isset($data['packages'][$depchannel][$depname])) {
+                foreach ($data['packages'][$depchannel][$depname] as $i => $info) {
+                    if ($info['channel'] == $channel && $info['package'] == $package) {
+                        $found = true;
+                        break;
+                    }
+                }
+            }
+
+            if ($found) {
+                unset($data['packages'][$depchannel][$depname][$i]);
+                if (!count($data['packages'][$depchannel][$depname])) {
+                    unset($data['packages'][$depchannel][$depname]);
+                    if (!count($data['packages'][$depchannel])) {
+                        unset($data['packages'][$depchannel]);
+                    }
+                } else {
+                    $data['packages'][$depchannel][$depname] =
+                        array_values($data['packages'][$depchannel][$depname]);
+                }
+            }
+        }
+
+        unset($data['dependencies'][$channel][$package]);
+        if (!count($data['dependencies'][$channel])) {
+            unset($data['dependencies'][$channel]);
+        }
+
+        if (!count($data['dependencies'])) {
+            unset($data['dependencies']);
+        }
+
+        if (!count($data['packages'])) {
+            unset($data['packages']);
+        }
+
+        $this->_writeDepDB($data);
+    }
+
+    /**
+     * Rebuild the dependency DB by reading registry entries.
+     * @return true|PEAR_Error
+     */
+    function rebuildDB()
+    {
+        $depdb = array('_version' => $this->_version);
+        if (!$this->hasWriteAccess()) {
+            // allow startup for read-only with older Registry
+            return $depdb;
+        }
+
+        $packages = $this->_registry->listAllPackages();
+        if (PEAR::isError($packages)) {
+            return $packages;
+        }
+
+        foreach ($packages as $channel => $ps) {
+            foreach ($ps as $package) {
+                $package = $this->_registry->getPackage($package, $channel);
+                if (PEAR::isError($package)) {
+                    return $package;
+                }
+                $this->_setPackageDeps($depdb, $package);
+            }
+        }
+
+        $error = $this->_writeDepDB($depdb);
+        if (PEAR::isError($error)) {
+            return $error;
+        }
+
+        $this->_cache = $depdb;
+        return true;
+    }
+
+    /**
+     * Register usage of the dependency DB to prevent race conditions
+     * @param int one of the LOCK_* constants
+     * @return true|PEAR_Error
+     * @access private
+     */
+    function _lock($mode = LOCK_EX)
+    {
+        if (stristr(php_uname(), 'Windows 9')) {
+            return true;
+        }
+
+        if ($mode != LOCK_UN && is_resource($this->_lockFp)) {
+            // XXX does not check type of lock (LOCK_SH/LOCK_EX)
+            return true;
+        }
+
+        $open_mode = 'w';
+        // XXX People reported problems with LOCK_SH and 'w'
+        if ($mode === LOCK_SH) {
+            if (!file_exists($this->_lockfile)) {
+                touch($this->_lockfile);
+            } elseif (!is_file($this->_lockfile)) {
+                return PEAR::raiseError('could not create Dependency lock file, ' .
+                    'it exists and is not a regular file');
+            }
+            $open_mode = 'r';
+        }
+
+        if (!is_resource($this->_lockFp)) {
+            $this->_lockFp = @fopen($this->_lockfile, $open_mode);
+        }
+
+        if (!is_resource($this->_lockFp)) {
+            return PEAR::raiseError("could not create Dependency lock file" .
+                                     (isset($php_errormsg) ? ": " . $php_errormsg : ""));
+        }
+
+        if (!(int)flock($this->_lockFp, $mode)) {
+            switch ($mode) {
+                case LOCK_SH: $str = 'shared';    break;
+                case LOCK_EX: $str = 'exclusive'; break;
+                case LOCK_UN: $str = 'unlock';    break;
+                default:      $str = 'unknown';   break;
+            }
+
+            return PEAR::raiseError("could not acquire $str lock ($this->_lockfile)");
+        }
+
+        return true;
+    }
+
+    /**
+     * Release usage of dependency DB
+     * @return true|PEAR_Error
+     * @access private
+     */
+    function _unlock()
+    {
+        $ret = $this->_lock(LOCK_UN);
+        if (is_resource($this->_lockFp)) {
+            fclose($this->_lockFp);
+        }
+        $this->_lockFp = null;
+        return $ret;
+    }
+
+    /**
+     * Load the dependency database from disk, or return the cache
+     * @return array|PEAR_Error
+     */
+    function _getDepDB()
+    {
+        if (!$this->hasWriteAccess()) {
+            return array('_version' => $this->_version);
+        }
+
+        if (isset($this->_cache)) {
+            return $this->_cache;
+        }
+
+        if (!$fp = fopen($this->_depdb, 'r')) {
+            $err = PEAR::raiseError("Could not open dependencies file `".$this->_depdb."'");
+            return $err;
+        }
+
+        $rt = get_magic_quotes_runtime();
+        set_magic_quotes_runtime(0);
+        clearstatcache();
+        fclose($fp);
+        $data = unserialize(file_get_contents($this->_depdb));
+        set_magic_quotes_runtime($rt);
+        $this->_cache = $data;
+        return $data;
+    }
+
+    /**
+     * Write out the dependency database to disk
+     * @param array the database
+     * @return true|PEAR_Error
+     * @access private
+     */
+    function _writeDepDB(&$deps)
+    {
+        if (PEAR::isError($e = $this->_lock(LOCK_EX))) {
+            return $e;
+        }
+
+        if (!$fp = fopen($this->_depdb, 'wb')) {
+            $this->_unlock();
+            return PEAR::raiseError("Could not open dependencies file `".$this->_depdb."' for writing");
+        }
+
+        $rt = get_magic_quotes_runtime();
+        set_magic_quotes_runtime(0);
+        fwrite($fp, serialize($deps));
+        set_magic_quotes_runtime($rt);
+        fclose($fp);
+        $this->_unlock();
+        $this->_cache = $deps;
+        return true;
+    }
+
+    /**
+     * Register all dependencies from a package in the dependencies database, in essence
+     * "installing" the package's dependency information
+     * @param array the database
+     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
+     * @access private
+     */
+    function _setPackageDeps(&$data, &$pkg)
+    {
+        $pkg->setConfig($this->_config);
+        if ($pkg->getPackagexmlVersion() == '1.0') {
+            $gen = &$pkg->getDefaultGenerator();
+            $deps = $gen->dependenciesToV2();
+        } else {
+            $deps = $pkg->getDeps(true);
+        }
+
+        if (!$deps) {
+            return;
+        }
+
+        if (!is_array($data)) {
+            $data = array();
+        }
+
+        if (!isset($data['dependencies'])) {
+            $data['dependencies'] = array();
+        }
+
+        $channel = strtolower($pkg->getChannel());
+        $package = strtolower($pkg->getPackage());
+
+        if (!isset($data['dependencies'][$channel])) {
+            $data['dependencies'][$channel] = array();
+        }
+
+        $data['dependencies'][$channel][$package] = array();
+        if (isset($deps['required']['package'])) {
+            if (!isset($deps['required']['package'][0])) {
+                $deps['required']['package'] = array($deps['required']['package']);
+            }
+
+            foreach ($deps['required']['package'] as $dep) {
+                $this->_registerDep($data, $pkg, $dep, 'required');
+            }
+        }
+
+        if (isset($deps['optional']['package'])) {
+            if (!isset($deps['optional']['package'][0])) {
+                $deps['optional']['package'] = array($deps['optional']['package']);
+            }
+
+            foreach ($deps['optional']['package'] as $dep) {
+                $this->_registerDep($data, $pkg, $dep, 'optional');
+            }
+        }
+
+        if (isset($deps['required']['subpackage'])) {
+            if (!isset($deps['required']['subpackage'][0])) {
+                $deps['required']['subpackage'] = array($deps['required']['subpackage']);
+            }
+
+            foreach ($deps['required']['subpackage'] as $dep) {
+                $this->_registerDep($data, $pkg, $dep, 'required');
+            }
+        }
+
+        if (isset($deps['optional']['subpackage'])) {
+            if (!isset($deps['optional']['subpackage'][0])) {
+                $deps['optional']['subpackage'] = array($deps['optional']['subpackage']);
+            }
+
+            foreach ($deps['optional']['subpackage'] as $dep) {
+                $this->_registerDep($data, $pkg, $dep, 'optional');
+            }
+        }
+
+        if (isset($deps['group'])) {
+            if (!isset($deps['group'][0])) {
+                $deps['group'] = array($deps['group']);
+            }
+
+            foreach ($deps['group'] as $group) {
+                if (isset($group['package'])) {
+                    if (!isset($group['package'][0])) {
+                        $group['package'] = array($group['package']);
+                    }
+
+                    foreach ($group['package'] as $dep) {
+                        $this->_registerDep($data, $pkg, $dep, 'optional',
+                            $group['attribs']['name']);
+                    }
+                }
+
+                if (isset($group['subpackage'])) {
+                    if (!isset($group['subpackage'][0])) {
+                        $group['subpackage'] = array($group['subpackage']);
+                    }
+
+                    foreach ($group['subpackage'] as $dep) {
+                        $this->_registerDep($data, $pkg, $dep, 'optional',
+                            $group['attribs']['name']);
+                    }
+                }
+            }
+        }
+
+        if ($data['dependencies'][$channel][$package] == array()) {
+            unset($data['dependencies'][$channel][$package]);
+            if (!count($data['dependencies'][$channel])) {
+                unset($data['dependencies'][$channel]);
+            }
+        }
+    }
+
+    /**
+     * @param array the database
+     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
+     * @param array the specific dependency
+     * @param required|optional whether this is a required or an optional dep
+     * @param string|false dependency group this dependency is from, or false for ordinary dep
+     */
+    function _registerDep(&$data, &$pkg, $dep, $type, $group = false)
+    {
+        $info = array(
+            'dep'   => $dep,
+            'type'  => $type,
+            'group' => $group
+        );
+
+        $dep  = array_map('strtolower', $dep);
+        $depchannel = isset($dep['channel']) ? $dep['channel'] : '__uri';
+        if (!isset($data['dependencies'])) {
+            $data['dependencies'] = array();
+        }
+
+        $channel = strtolower($pkg->getChannel());
+        $package = strtolower($pkg->getPackage());
+
+        if (!isset($data['dependencies'][$channel])) {
+            $data['dependencies'][$channel] = array();
+        }
+
+        if (!isset($data['dependencies'][$channel][$package])) {
+            $data['dependencies'][$channel][$package] = array();
+        }
+
+        $data['dependencies'][$channel][$package][] = $info;
+        if (isset($data['packages'][$depchannel][$dep['name']])) {
+            $found = false;
+            foreach ($data['packages'][$depchannel][$dep['name']] as $i => $p) {
+                if ($p['channel'] == $channel && $p['package'] == $package) {
+                    $found = true;
+                    break;
+                }
+            }
+        } else {
+            if (!isset($data['packages'])) {
+                $data['packages'] = array();
+            }
+
+            if (!isset($data['packages'][$depchannel])) {
+                $data['packages'][$depchannel] = array();
+            }
+
+            if (!isset($data['packages'][$depchannel][$dep['name']])) {
+                $data['packages'][$depchannel][$dep['name']] = array();
+            }
+
+            $found = false;
+        }
+
+        if (!$found) {
+            $data['packages'][$depchannel][$dep['name']][] = array(
+                'channel' => $channel,
+                'package' => $package
+            );
+        }
+    }
+}
\ No newline at end of file