/**
* Verify that uninstalling packages passed in to command line is OK.
*
* @param PEAR_Installer $dl
* @return PEAR_Error|true
*/
function validatePackageUninstall(&$dl)
{
if (PEAR::isError($this->_dependencydb)) {
return $this->_dependencydb;
}
$params = array();
// construct an array of "downloaded" packages to fool the package dependency checker
// into using these to validate uninstalls of circular dependencies
$downloaded =& $dl->getUninstallPackages();
foreach ($downloaded as $i => $pf) {
if (!class_exists('PEAR_Downloader_Package')) {
require_once 'PEAR/Downloader/Package.php';
}
$dp =& new PEAR_Downloader_Package($dl);
$dp->setPackageFile($downloaded[$i]);
$params[$i] =& $dp;
}
// check cache
$memyselfandI = strtolower($this->_currentPackage['channel']) . '/' . strtolower($this->_currentPackage['package']);
if (isset($dl->___uninstall_package_cache)) {
$badpackages = $dl->___uninstall_package_cache;
if (isset($badpackages[$memyselfandI]['warnings'])) {
foreach ($badpackages[$memyselfandI]['warnings'] as $warning) {
$dl->log(0, $warning[0]);
}
}
if (isset($badpackages[$memyselfandI]['errors'])) {
foreach ($badpackages[$memyselfandI]['errors'] as $error) {
if (is_array($error)) {
$dl->log(0, $error[0]);
} else {
$dl->log(0, $error->getMessage());
}
}
if (isset($this->_options['nodeps']) || isset($this->_options['force'])) {
return $this->warning('warning: %s should not be uninstalled, other installed packages depend ' . 'on this package');
}
return $this->raiseError('%s cannot be uninstalled, other installed packages depend on this package');
}
return true;
}
// first, list the immediate parents of each package to be uninstalled
$perpackagelist = array();
$allparents = array();
foreach ($params as $i => $param) {
$a = array('channel' => strtolower($param->getChannel()), 'package' => strtolower($param->getPackage()));
$deps = $this->_dependencydb->getDependentPackages($a);
if ($deps) {
foreach ($deps as $d) {
$pardeps = $this->_dependencydb->getDependencies($d);
foreach ($pardeps as $dep) {
if (strtolower($dep['dep']['channel']) == $a['channel'] && strtolower($dep['dep']['name']) == $a['package']) {
if (!isset($perpackagelist[$a['channel'] . '/' . $a['package']])) {
$perpackagelist[$a['channel'] . '/' . $a['package']] = array();
}
$perpackagelist[$a['channel'] . '/' . $a['package']][] = array($d['channel'] . '/' . $d['package'], $dep);
if (!isset($allparents[$d['channel'] . '/' . $d['package']])) {
$allparents[$d['channel'] . '/' . $d['package']] = array();
}
if (!isset($allparents[$d['channel'] . '/' . $d['package']][$a['channel'] . '/' . $a['package']])) {
$allparents[$d['channel'] . '/' . $d['package']][$a['channel'] . '/' . $a['package']] = array();
}
$allparents[$d['channel'] . '/' . $d['package']][$a['channel'] . '/' . $a['package']][] = array($d, $dep);
}
}
}
}
}
// next, remove any packages from the parents list that are not installed
$remove = array();
foreach ($allparents as $parent => $d1) {
foreach ($d1 as $d) {
if ($this->_registry->packageExists($d[0][0]['package'], $d[0][0]['channel'])) {
continue;
}
$remove[$parent] = true;
}
}
// next remove any packages from the parents list that are not passed in for
// uninstallation
foreach ($allparents as $parent => $d1) {
foreach ($d1 as $d) {
foreach ($params as $param) {
if (strtolower($param->getChannel()) == $d[0][0]['channel'] && strtolower($param->getPackage()) == $d[0][0]['package']) {
// found it
continue 3;
}
}
$remove[$parent] = true;
}
}
// remove all packages whose dependencies fail
// save which ones failed for error reporting
$badchildren = array();
do {
$fail = false;
foreach ($remove as $package => $unused) {
if (!isset($allparents[$package])) {
continue;
}
foreach ($allparents[$package] as $kid => $d1) {
foreach ($d1 as $depinfo) {
if ($depinfo[1]['type'] != 'optional') {
if (isset($badchildren[$kid])) {
continue;
}
$badchildren[$kid] = true;
$remove[$kid] = true;
$fail = true;
continue 2;
}
}
}
if ($fail) {
// start over, we removed some children
continue 2;
}
}
} while ($fail);
// next, construct the list of packages that can't be uninstalled
$badpackages = array();
$save = $this->_currentPackage;
foreach ($perpackagelist as $package => $packagedeps) {
foreach ($packagedeps as $parent) {
if (!isset($remove[$parent[0]])) {
continue;
}
$packagename = $this->_registry->parsePackageName($parent[0]);
$packagename['channel'] = $this->_registry->channelAlias($packagename['channel']);
$pa = $this->_registry->getPackage($packagename['package'], $packagename['channel']);
$packagename['package'] = $pa->getPackage();
$this->_currentPackage = $packagename;
// parent is not present in uninstall list, make sure we can actually
// uninstall it (parent dep is optional)
$parentname['channel'] = $this->_registry->channelAlias($parent[1]['dep']['channel']);
$pa = $this->_registry->getPackage($parent[1]['dep']['name'], $parent[1]['dep']['channel']);
$parentname['package'] = $pa->getPackage();
$parent[1]['dep']['package'] = $parentname['package'];
$parent[1]['dep']['channel'] = $parentname['channel'];
if ($parent[1]['type'] == 'optional') {
$test = $this->_validatePackageUninstall($parent[1]['dep'], false, $dl);
if ($test !== true) {
$badpackages[$package]['warnings'][] = $test;
}
} else {
$test = $this->_validatePackageUninstall($parent[1]['dep'], true, $dl);
if ($test !== true) {
$badpackages[$package]['errors'][] = $test;
}
}
}
}
$this->_currentPackage = $save;
$dl->___uninstall_package_cache = $badpackages;
if (isset($badpackages[$memyselfandI])) {
if (isset($badpackages[$memyselfandI]['warnings'])) {
foreach ($badpackages[$memyselfandI]['warnings'] as $warning) {
$dl->log(0, $warning[0]);
}
}
if (isset($badpackages[$memyselfandI]['errors'])) {
foreach ($badpackages[$memyselfandI]['errors'] as $error) {
if (is_array($error)) {
$dl->log(0, $error[0]);
} else {
$dl->log(0, $error->getMessage());
}
}
if (isset($this->_options['nodeps']) || isset($this->_options['force'])) {
return $this->warning('warning: %s should not be uninstalled, other installed packages depend ' . 'on this package');
}
return $this->raiseError('%s cannot be uninstalled, other installed packages depend on this package');
}
}
return true;
}
