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<?php
/**
 * PEAR_PackageFile_v2, package.xml version 2.0, read/write version
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    CVS: $Id$
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a8
 */
/**
 * Private validation class used by PEAR_PackageFile_v2 - do not use directly, its
 * sole purpose is to split up the PEAR/PackageFile/v2.php file to make it smaller
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    Release: 1.9.5
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.4.0a8
 * @access private
 */
class PEAR_PackageFile_v2_Validator
{
    /**
     * @var array
     */
    var $_packageInfo;
    /**
     * @var PEAR_PackageFile_v2
     */
    var $_pf;
    /**
     * @var PEAR_ErrorStack
     */
    var $_stack;
    /**
     * @var int
     */
    var $_isValid = 0;
    /**
     * @var int
     */
    var $_filesValid = 0;
    /**
     * @var int
     */
    var $_curState = 0;
    /**
     * @param PEAR_PackageFile_v2
     * @param int
     */
    function validate(&$pf, $state = PEAR_VALIDATE_NORMAL)
    {
        $this->_pf = &$pf;
        $this->_curState = $state;
        $this->_packageInfo = $this->_pf->getArray();
        $this->_isValid = $this->_pf->_isValid;
        $this->_filesValid = $this->_pf->_filesValid;
        $this->_stack = &$pf->_stack;
        $this->_stack->getErrors(true);
        if (($this->_isValid & $state) == $state) {
            return true;
        }
        if (!isset($this->_packageInfo) || !is_array($this->_packageInfo)) {
            return false;
        }
        if (!isset($this->_packageInfo['attribs']['version']) ||
              ($this->_packageInfo['attribs']['version'] != '2.0' &&
               $this->_packageInfo['attribs']['version'] != '2.1')
        ) {
            $this->_noPackageVersion();
        }
        $structure =
        array(
            'name',
            'channel|uri',
            '*extends', // can't be multiple, but this works fine
            'summary',
            'description',
            '+lead', // these all need content checks
            '*developer',
            '*contributor',
            '*helper',
            'date',
            '*time',
            'version',
            'stability',
            'license->?uri->?filesource',
            'notes',
            'contents', //special validation needed
            '*compatible',
            'dependencies', //special validation needed
            '*usesrole',
            '*usestask', // reserve these for 1.4.0a1 to implement
                         // this will allow a package.xml to gracefully say it
                         // needs a certain package installed in order to implement a role or task
            '*providesextension',
            '*srcpackage|*srcuri',
            '+phprelease|+extsrcrelease|+extbinrelease|' .
                '+zendextsrcrelease|+zendextbinrelease|bundle', //special validation needed
            '*changelog',
        );
        $test = $this->_packageInfo;
        if (isset($test['dependencies']) &&
              isset($test['dependencies']['required']) &&
              isset($test['dependencies']['required']['pearinstaller']) &&
              isset($test['dependencies']['required']['pearinstaller']['min']) &&
              version_compare('1.9.5',
                $test['dependencies']['required']['pearinstaller']['min'], '<')
        ) {
            $this->_pearVersionTooLow($test['dependencies']['required']['pearinstaller']['min']);
            return false;
        }
        // ignore post-installation array fields
        if (array_key_exists('filelist', $test)) {
            unset($test['filelist']);
        }
        if (array_key_exists('_lastmodified', $test)) {
            unset($test['_lastmodified']);
        }
        if (array_key_exists('#binarypackage', $test)) {
            unset($test['#binarypackage']);
        }
        if (array_key_exists('old', $test)) {
            unset($test['old']);
        }
        if (array_key_exists('_lastversion', $test)) {
            unset($test['_lastversion']);
        }
        if (!$this->_stupidSchemaValidate($structure, $test, '<package>')) {
            return false;
        }
        if (empty($this->_packageInfo['name'])) {
            $this->_tagCannotBeEmpty('name');
        }
        $test = isset($this->_packageInfo['uri']) ? 'uri' :'channel';
        if (empty($this->_packageInfo[$test])) {
            $this->_tagCannotBeEmpty($test);
        }
        if (is_array($this->_packageInfo['license']) &&
              (!isset($this->_packageInfo['license']['_content']) ||
              empty($this->_packageInfo['license']['_content']))) {
            $this->_tagCannotBeEmpty('license');
        } elseif (empty($this->_packageInfo['license'])) {
            $this->_tagCannotBeEmpty('license');
        }
        if (empty($this->_packageInfo['summary'])) {
            $this->_tagCannotBeEmpty('summary');
        }
        if (empty($this->_packageInfo['description'])) {
            $this->_tagCannotBeEmpty('description');
        }
        if (empty($this->_packageInfo['date'])) {
            $this->_tagCannotBeEmpty('date');
        }
        if (empty($this->_packageInfo['notes'])) {
            $this->_tagCannotBeEmpty('notes');
        }
        if (isset($this->_packageInfo['time']) && empty($this->_packageInfo['time'])) {
            $this->_tagCannotBeEmpty('time');
        }
        if (isset($this->_packageInfo['dependencies'])) {
            $this->_validateDependencies();
        }
        if (isset($this->_packageInfo['compatible'])) {
            $this->_validateCompatible();
        }
        if (!isset($this->_packageInfo['bundle'])) {
            if (empty($this->_packageInfo['contents'])) {
                $this->_tagCannotBeEmpty('contents');
            }
            if (!isset($this->_packageInfo['contents']['dir'])) {
                $this->_filelistMustContainDir('contents');
                return false;
            }
            if (isset($this->_packageInfo['contents']['file'])) {
                $this->_filelistCannotContainFile('contents');
                return false;
            }
        }
        $this->_validateMaintainers();
        $this->_validateStabilityVersion();
        $fail = false;
        if (array_key_exists('usesrole', $this->_packageInfo)) {
            $roles = $this->_packageInfo['usesrole'];
            if (!is_array($roles) || !isset($roles[0])) {
                $roles = array($roles);
            }
            foreach ($roles as $role) {
                if (!isset($role['role'])) {
                    $this->_usesroletaskMustHaveRoleTask('usesrole', 'role');
                    $fail = true;
                } else {
                    if (!isset($role['channel'])) {
                        if (!isset($role['uri'])) {
                            $this->_usesroletaskMustHaveChannelOrUri($role['role'], 'usesrole');
                            $fail = true;
                        }
                    } elseif (!isset($role['package'])) {
                        $this->_usesroletaskMustHavePackage($role['role'], 'usesrole');
                        $fail = true;
                    }
                }
            }
        }
        if (array_key_exists('usestask', $this->_packageInfo)) {
            $roles = $this->_packageInfo['usestask'];
            if (!is_array($roles) || !isset($roles[0])) {
                $roles = array($roles);
            }
            foreach ($roles as $role) {
                if (!isset($role['task'])) {
                    $this->_usesroletaskMustHaveRoleTask('usestask', 'task');
                    $fail = true;
                } else {
                    if (!isset($role['channel'])) {
                        if (!isset($role['uri'])) {
                            $this->_usesroletaskMustHaveChannelOrUri($role['task'], 'usestask');
                            $fail = true;
                        }
                    } elseif (!isset($role['package'])) {
                        $this->_usesroletaskMustHavePackage($role['task'], 'usestask');
                        $fail = true;
                    }
                }
            }
        }

if ($fail) {
            return false;
        }

$list = $this->_packageInfo['contents'];
        if (isset($list['dir']) && is_array($list['dir']) && isset($list['dir'][0])) {
            $this->_multipleToplevelDirNotAllowed();
            return $this->_isValid = 0;
        }

$this->_validateFilelist();
        $this->_validateRelease();
        if (!$this->_stack->hasErrors()) {
            $chan = $this->_pf->_registry->getChannel($this->_pf->getChannel(), true);
            if (PEAR::isError($chan)) {
                $this->_unknownChannel($this->_pf->getChannel());
            } else {
                $valpack = $chan->getValidationPackage();
                // for channel validator packages, always use the default PEAR validator.
                // otherwise, they can't be installed or packaged
                $validator = $chan->getValidationObject($this->_pf->getPackage());
                if (!$validator) {
                    $this->_stack->push(__FUNCTION__, 'error',
                        array('channel' => $chan->getName(),
                              'package' => $this->_pf->getPackage(),
                              'name'    => $valpack['_content'],
                              'version' => $valpack['attribs']['version']),
                        'package "%channel%/%package%" cannot be properly validated without ' .
                        'validation package "%channel%/%name%-%version%"');
                    return $this->_isValid = 0;
                }
                $validator->setPackageFile($this->_pf);
                $validator->validate($state);
                $failures = $validator->getFailures();
                foreach ($failures['errors'] as $error) {
                    $this->_stack->push(__FUNCTION__, 'error', $error,
                        'Channel validator error: field "%field%" - %reason%');
                }
                foreach ($failures['warnings'] as $warning) {
                    $this->_stack->push(__FUNCTION__, 'warning', $warning,
                        'Channel validator warning: field "%field%" - %reason%');
                }
            }
        }

$this->_pf->_isValid = $this->_isValid = !$this->_stack->hasErrors('error');
        if ($this->_isValid && $state == PEAR_VALIDATE_PACKAGING && !$this->_filesValid) {
            if ($this->_pf->getPackageType() == 'bundle') {
                if ($this->_analyzeBundledPackages()) {
                    $this->_filesValid = $this->_pf->_filesValid = true;
                } else {
                    $this->_pf->_isValid = $this->_isValid = 0;
                }
            } else {
                if (!$this->_analyzePhpFiles()) {
                    $this->_pf->_isValid = $this->_isValid = 0;
                } else {
                    $this->_filesValid = $this->_pf->_filesValid = true;
                }
            }
        }

if ($this->_isValid) {
            return $this->_pf->_isValid = $this->_isValid = $state;
        }

return $this->_pf->_isValid = $this->_isValid = 0;
    }

function _validateArchDep($dep, $installcondition = false)
    {
        $structure = array(
            'pattern',
            '*conflicts',
        );
        $type = $installcondition ? '<installcondition><arch>' : '<dependencies><required><arch>';
        $this->_stupidSchemaValidate($structure, $dep, $type);
    }

$this->_validateFilelist($rel['filelist'], true);
                }
            }
        }
    }

/**
     * This is here to allow role extension through plugins
     * @param string
     */
    function _validateRole($role)
    {
        return in_array($role, PEAR_Installer_Role::getValidRoles($this->_pf->getPackageType()));
    }

function _pearVersionTooLow($version)
    {
        $this->_stack->push(__FUNCTION__, 'error',
            array('version' => $version),
            'This package.xml requires PEAR version %version% to parse properly, we are ' .
            'version 1.9.5');
    }

function _invalidTagOrder($oktags, $actual, $root)
    {
        $this->_stack->push(__FUNCTION__, 'error',
            array('oktags' => $oktags, 'actual' => $actual, 'root' => $root),
            'Invalid tag order in %root%, found <%actual%> expected one of "%oktags%"');
    }

function _ignoreNotAllowed($type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type),
            '<%type%> is not allowed inside global <contents>, only inside ' .
            '<phprelease>/<extbinrelease>/<zendextbinrelease>, use <dir> and <file> only');
    }

function _fileNotAllowed($type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type),
            '<%type%> is not allowed inside release <filelist>, only inside ' .
            '<contents>, use <ignore> and <install> only');
    }

function _oldStyleFileNotAllowed()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            'Old-style <file>name</file> is not allowed.  Use' .
            '<file name="name" role="role"/>');
    }

function _tagMissingAttribute($tag, $attr, $context)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $tag,
            'attribute' => $attr, 'context' => $context),
            'tag <%tag%> in context "%context%" has no attribute "%attribute%"');
    }

function _tagHasNoAttribs($tag, $context)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $tag,
            'context' => $context),
            'tag <%tag%> has no attributes in context "%context%"');
    }

function _invalidInternalStructure()
    {
        $this->_stack->push(__FUNCTION__, 'exception', array(),
            'internal array was not generated by compatible parser, or extreme parser error, cannot continue');
    }

function _invalidFileRole($file, $dir, $role)
    {
        $this->_stack->push(__FUNCTION__, 'error', array(
            'file' => $file, 'dir' => $dir, 'role' => $role,
            'roles' => PEAR_Installer_Role::getValidRoles($this->_pf->getPackageType())),
            'File "%file%" in directory "%dir%" has invalid role "%role%", should be one of %roles%');
    }

function _invalidFileName($file, $dir)
    {
        $this->_stack->push(__FUNCTION__, 'error', array(
            'file' => $file),
            'File "%file%" in directory "%dir%" cannot begin with "./" or contain ".."');
    }

function _invalidFileInstallAs($file, $as)
    {
        $this->_stack->push(__FUNCTION__, 'error', array(
            'file' => $file, 'as' => $as),
            'File "%file%" <install as="%as%"/> cannot contain "./" or contain ".."');
    }

function _invalidDirName($dir)
    {
        $this->_stack->push(__FUNCTION__, 'error', array(
            'dir' => $file),
            'Directory "%dir%" cannot begin with "./" or contain ".."');
    }

function _filelistCannotContainFile($filelist)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $filelist),
            '<%tag%> can only contain <dir>, contains <file>.  Use ' .
            '<dir name="/"> as the first dir element');
    }

function _filelistMustContainDir($filelist)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $filelist),
            '<%tag%> must contain <dir>.  Use <dir name="/"> as the ' .
            'first dir element');
    }

function _tagCannotBeEmpty($tag)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $tag),
            '<%tag%> cannot be empty (<%tag%/>)');
    }

function _UrlOrChannel($type, $name)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type,
            'name' => $name),
            'Required dependency <%type%> "%name%" can have either url OR ' .
            'channel attributes, and not both');
    }

function _NoChannel($type, $name)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type,
            'name' => $name),
            'Required dependency <%type%> "%name%" must have either url OR ' .
            'channel attributes');
    }

function _UrlOrChannelGroup($type, $name, $group)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type,
            'name' => $name, 'group' => $group),
            'Group "%group%" dependency <%type%> "%name%" can have either url OR ' .
            'channel attributes, and not both');
    }

function _NoChannelGroup($type, $name, $group)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type,
            'name' => $name, 'group' => $group),
            'Group "%group%" dependency <%type%> "%name%" must have either url OR ' .
            'channel attributes');
    }

function _unknownChannel($channel)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('channel' => $channel),
            'Unknown channel "%channel%"');
    }

function _noPackageVersion()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            'package.xml <package> tag has no version attribute, or version is not 2.0');
    }

function _NoBundledPackages()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            'No <bundledpackage> tag was found in <contents>, required for bundle packages');
    }

function _AtLeast2BundledPackages()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            'At least 2 packages must be bundled in a bundle package');
    }

function _ChannelOrUri($name)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('name' => $name),
            'Bundled package "%name%" can have either a uri or a channel, not both');
    }

function _noChildTag($child, $tag)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('child' => $child, 'tag' => $tag),
            'Tag <%tag%> is missing child tag <%child%>');
    }

function _invalidVersion($type, $value)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type, 'value' => $value),
            'Version type <%type%> is not a valid version (%value%)');
    }

function _invalidTask($task, $ret, $file)
    {
        switch ($ret[0]) {
            case PEAR_TASK_ERROR_MISSING_ATTRIB :
                $info = array('attrib' => $ret[1], 'task' => $task, 'file' => $file);
                $msg = 'task <%task%> is missing attribute "%attrib%" in file %file%';
            break;
            case PEAR_TASK_ERROR_NOATTRIBS :
                $info = array('task' => $task, 'file' => $file);
                $msg = 'task <%task%> has no attributes in file %file%';
            break;
            case PEAR_TASK_ERROR_WRONG_ATTRIB_VALUE :
                $info = array('attrib' => $ret[1], 'values' => $ret[3],
                    'was' => $ret[2], 'task' => $task, 'file' => $file);
                $msg = 'task <%task%> attribute "%attrib%" has the wrong value "%was%" '.
                    'in file %file%, expecting one of "%values%"';
            break;
            case PEAR_TASK_ERROR_INVALID :
                $info = array('reason' => $ret[1], 'task' => $task, 'file' => $file);
                $msg = 'task <%task%> in file %file% is invalid because of "%reason%"';
            break;
        }
        $this->_stack->push(__FUNCTION__, 'error', $info, $msg);
    }

function _unknownTask($task, $file)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('task' => $task, 'file' => $file),
            'Unknown task "%task%" passed in file <file name="%file%">');
    }

function _subpackageCannotProvideExtension($name)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('name' => $name),
            'Subpackage dependency "%name%" cannot use <providesextension>, ' .
            'only package dependencies can use this tag');
    }

function _subpackagesCannotConflict($name)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('name' => $name),
            'Subpackage dependency "%name%" cannot use <conflicts/>, ' .
            'only package dependencies can use this tag');
    }

function _cannotProvideExtension($release)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('release' => $release),
            '<%release%> packages cannot use <providesextension>, only extbinrelease, extsrcrelease, zendextsrcrelease, and zendextbinrelease can provide a PHP extension');
    }

function _mustProvideExtension($release)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('release' => $release),
            '<%release%> packages must use <providesextension> to indicate which PHP extension is provided');
    }

function _cannotHaveSrcpackage($release)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('release' => $release),
            '<%release%> packages cannot specify a source code package, only extension binaries may use the <srcpackage> tag');
    }

function _mustSrcPackage($release)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('release' => $release),
            '<extbinrelease>/<zendextbinrelease> packages must specify a source code package with <srcpackage>');
    }

function _mustSrcuri($release)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('release' => $release),
            '<extbinrelease>/<zendextbinrelease> packages must specify a source code package with <srcuri>');
    }

function _uriDepsCannotHaveVersioning($type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type),
            '%type%: dependencies with a <uri> tag cannot have any versioning information');
    }

function _conflictingDepsCannotHaveVersioning($type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type),
            '%type%: conflicting dependencies cannot have versioning info, use <exclude> to ' .
            'exclude specific versions of a dependency');
    }

function _DepchannelCannotBeUri($type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('type' => $type),
            '%type%: channel cannot be __uri, this is a pseudo-channel reserved for uri ' .
            'dependencies only');
    }

function _bundledPackagesMustBeFilename()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            '<bundledpackage> tags must contain only the filename of a package release ' .
            'in the bundle');
    }

function _binaryPackageMustBePackagename()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            '<binarypackage> tags must contain the name of a package that is ' .
            'a compiled version of this extsrc/zendextsrc package');
    }

function _fileNotFound($file)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('file' => $file),
            'File "%file%" in package.xml does not exist');
    }

function _notInContents($file, $tag)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('file' => $file, 'tag' => $tag),
            '<%tag% name="%file%"> is invalid, file is not in <contents>');
    }

function _cannotValidateNoPathSet()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            'Cannot validate files, no path to package file is set (use setPackageFile())');
    }

function _usesroletaskMustHaveChannelOrUri($role, $tag)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('role' => $role, 'tag' => $tag),
            '<%tag%> for role "%role%" must contain either <uri>, or <channel> and <package>');
    }

function _usesroletaskMustHavePackage($role, $tag)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('role' => $role, 'tag' => $tag),
            '<%tag%> for role "%role%" must contain <package>');
    }

function _usesroletaskMustHaveRoleTask($tag, $type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $tag, 'type' => $type),
            '<%tag%> must contain <%type%> defining the %type% to be used');
    }

function _cannotConflictWithAllOs($type)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('tag' => $tag),
            '%tag% cannot conflict with all OSes');
    }

function _invalidDepGroupName($name)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('name' => $name),
            'Invalid dependency group name "%name%"');
    }

function _multipleToplevelDirNotAllowed()
    {
        $this->_stack->push(__FUNCTION__, 'error', array(),
            'Multiple top-level <dir> tags are not allowed.  Enclose them ' .
                'in a <dir name="/">');
    }

function _multipleInstallAs($file)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('file' => $file),
            'Only one <install> tag is allowed for file "%file%"');
    }

function _ignoreAndInstallAs($file)
    {
        $this->_stack->push(__FUNCTION__, 'error', array('file' => $file),
            'Cannot have both <ignore> and <install> tags for file "%file%"');
    }

/**
     * Analyze the source code of the given PHP file
     *
     * @param  string Filename of the PHP file
     * @param  boolean whether to analyze $file as the file contents
     * @return mixed
     */
    function analyzeSourceCode($file, $string = false)
    {
        if (!function_exists("token_get_all")) {
            $this->_stack->push(__FUNCTION__, 'error', array('file' => $file),
                'Parser error: token_get_all() function must exist to analyze source code, PHP may have been compiled with --disable-tokenizer');
            return false;
        }

if (!defined('T_DOC_COMMENT')) {
            define('T_DOC_COMMENT', T_COMMENT);
        }

if (!defined('T_INTERFACE')) {
            define('T_INTERFACE', -1);
        }

if (!defined('T_IMPLEMENTS')) {
            define('T_IMPLEMENTS', -1);
        }

if ($string) {
            $contents = $file;
        } else {
            if (!$fp = @fopen($file, "r")) {
                return false;
            }
            fclose($fp);
            $contents = file_get_contents($file);
        }

// Silence this function so we can catch PHP Warnings and show our own custom message
        $tokens = @token_get_all($contents);
        if (isset($php_errormsg)) {
            if (isset($this->_stack)) {
                $pn = $this->_pf->getPackage();
                $this->_stack->push(__FUNCTION__, 'warning',
                        array('file' => $file, 'package' => $pn),
                        'in %file%: Could not process file for unknown reasons,' .
                        ' possibly a PHP parse error in %file% from %package%');
            }
        }
/*
        for ($i = 0; $i < sizeof($tokens); $i++) {
            @list($token, $data) = $tokens[$i];
            if (is_string($token)) {
                var_dump($token);
            } else {
                print token_name($token) . ' ';
                var_dump(rtrim($data));
            }
        }
*/
        $look_for = 0;
        $paren_level = 0;
        $bracket_level = 0;
        $brace_level = 0;
        $lastphpdoc = '';
        $current_class = '';
        $current_interface = '';
        $current_class_level = -1;
        $current_function = '';
        $current_function_level = -1;
        $declared_classes = array();
        $declared_interfaces = array();
        $declared_functions = array();
        $declared_methods = array();
        $used_classes = array();
        $used_functions = array();
        $extends = array();
        $implements = array();
        $nodeps = array();
        $inquote = false;
        $interface = false;
        for ($i = 0; $i < sizeof($tokens); $i++) {
            if (is_array($tokens[$i])) {
                list($token, $data) = $tokens[$i];
            } else {
                $token = $tokens[$i];
                $data = '';
            }

if ($inquote) {
                if ($token != '"' && $token != T_END_HEREDOC) {
                    continue;
                } else {
                    $inquote = false;
                    continue;
                }
            }

switch ($token) {
                case T_WHITESPACE :
                    continue;
                case ';':
                    if ($interface) {
                        $current_function = '';
                        $current_function_level = -1;
                    }
                    break;
                case '"':
                case T_START_HEREDOC:
                    $inquote = true;
                    break;
                case T_CURLY_OPEN:
                case T_DOLLAR_OPEN_CURLY_BRACES:
                case '{': $brace_level++; continue 2;
                case '}':
                    $brace_level--;
                    if ($current_class_level == $brace_level) {
                        $current_class = '';
                        $current_class_level = -1;
                    }
                    if ($current_function_level == $brace_level) {
                        $current_function = '';
                        $current_function_level = -1;
                    }
                    continue 2;
                case '[': $bracket_level++; continue 2;
                case ']': $bracket_level--; continue 2;
                case '(': $paren_level++;   continue 2;
                case ')': $paren_level--;   continue 2;
                case T_INTERFACE:
                    $interface = true;
                case T_CLASS:
                    if (($current_class_level != -1) || ($current_function_level != -1)) {
                        if (isset($this->_stack)) {
                            $this->_stack->push(__FUNCTION__, 'error', array('file' => $file),
                            'Parser error: invalid PHP found in file "%file%"');
                        } else {
                            PEAR::raiseError("Parser error: invalid PHP found in file \"$file\"",
                                PEAR_COMMON_ERROR_INVALIDPHP);
                        }

return false;
                    }
                case T_FUNCTION:
                case T_NEW:
                case T_EXTENDS:
                case T_IMPLEMENTS:
                    $look_for = $token;
                    continue 2;
                case T_STRING:
                    if (version_compare(zend_version(), '2.0', '<')) {
                        if (in_array(strtolower($data),
                            array('public', 'private', 'protected', 'abstract',
                                  'interface', 'implements', 'throw')
                                 )
                        ) {
                            if (isset($this->_stack)) {
                                $this->_stack->push(__FUNCTION__, 'warning', array(
                                    'file' => $file),
                                    'Error, PHP5 token encountered in %file%,' .
                                    ' analysis should be in PHP5');
                            } else {
                                PEAR::raiseError('Error: PHP5 token encountered in ' . $file .
                                    'packaging should be done in PHP 5');
                                return false;
                            }
                        }
                    }

if ($look_for == T_CLASS) {
                        $current_class = $data;
                        $current_class_level = $brace_level;
                        $declared_classes[] = $current_class;
                    } elseif ($look_for == T_INTERFACE) {
                        $current_interface = $data;
                        $current_class_level = $brace_level;
                        $declared_interfaces[] = $current_interface;
                    } elseif ($look_for == T_IMPLEMENTS) {
                        $implements[$current_class] = $data;
                    } elseif ($look_for == T_EXTENDS) {
                        $extends[$current_class] = $data;
                    } elseif ($look_for == T_FUNCTION) {
                        if ($current_class) {
                            $current_function = "$current_class::$data";
                            $declared_methods[$current_class][] = $data;
                        } elseif ($current_interface) {
                            $current_function = "$current_interface::$data";
                            $declared_methods[$current_interface][] = $data;
                        } else {
                            $current_function = $data;
                            $declared_functions[] = $current_function;
                        }

$current_function_level = $brace_level;
                        $m = array();
                    } elseif ($look_for == T_NEW) {
                        $used_classes[$data] = true;
                    }

$look_for = 0;
                    continue 2;
                case T_VARIABLE:
                    $look_for = 0;
                    continue 2;
                case T_DOC_COMMENT:
                case T_COMMENT:
                    if (preg_match('!^/\*\*\s!', $data)) {
                        $lastphpdoc = $data;
                        if (preg_match_all('/@nodep\s+(\S+)/', $lastphpdoc, $m)) {
                            $nodeps = array_merge($nodeps, $m[1]);
                        }
                    }
                    continue 2;
                case T_DOUBLE_COLON:
                    $token = $tokens[$i - 1][0];
                    if (!($token == T_WHITESPACE || $token == T_STRING || $token == T_STATIC || $token == T_VARIABLE)) {
                        if (isset($this->_stack)) {
                            $this->_stack->push(__FUNCTION__, 'warning', array('file' => $file),
                                'Parser error: invalid PHP found in file "%file%"');
                        } else {
                            PEAR::raiseError("Parser error: invalid PHP found in file \"$file\"",
                                PEAR_COMMON_ERROR_INVALIDPHP);
                        }

return false;
                    }

$class = $tokens[$i - 1][1];
                    if (strtolower($class) != 'parent') {
                        $used_classes[$class] = true;
                    }

continue 2;
            }
        }

return array(
            "source_file" => $file,
            "declared_classes" => $declared_classes,
            "declared_interfaces" => $declared_interfaces,
            "declared_methods" => $declared_methods,
            "declared_functions" => $declared_functions,
            "used_classes" => array_diff(array_keys($used_classes), $nodeps),
            "inheritance" => $extends,
            "implements" => $implements,
        );
    }

/**
     * Build a "provides" array from data returned by
     * analyzeSourceCode().  The format of the built array is like
     * this:
     *
     *  array(
     *    'class;MyClass' => 'array('type' => 'class', 'name' => 'MyClass'),
     *    ...
     *  )
     *
     *
     * @param array $srcinfo array with information about a source file
     * as returned by the analyzeSourceCode() method.
     *
     * @return void
     *
     * @access private
     *
     */
    function _buildProvidesArray($srcinfo)
    {
        if (!$this->_isValid) {
            return array();
        }

$providesret = array();
        $file        = basename($srcinfo['source_file']);
        $pn          = isset($this->_pf) ? $this->_pf->getPackage() : '';
        $pnl         = strlen($pn);
        foreach ($srcinfo['declared_classes'] as $class) {
            $key = "class;$class";
            if (isset($providesret[$key])) {
                continue;
            }

$providesret[$key] =
                array('file'=> $file, 'type' => 'class', 'name' => $class);
            if (isset($srcinfo['inheritance'][$class])) {
                $providesret[$key]['extends'] =
                    $srcinfo['inheritance'][$class];
            }
        }

foreach ($srcinfo['declared_methods'] as $class => $methods) {
            foreach ($methods as $method) {
                $function = "$class::$method";
                $key = "function;$function";
                if ($method{0} == '_' || !strcasecmp($method, $class) ||
                    isset($providesret[$key])) {
                    continue;
                }

$providesret[$key] =
                    array('file'=> $file, 'type' => 'function', 'name' => $function);
            }
        }

foreach ($srcinfo['declared_functions'] as $function) {
            $key = "function;$function";
            if ($function{0} == '_' || isset($providesret[$key])) {
                continue;
            }

if (!strstr($function, '::') && strncasecmp($function, $pn, $pnl)) {
                $warnings[] = "in1 " . $file . ": function \"$function\" not prefixed with package name \"$pn\"";
            }

$providesret[$key] =
                array('file'=> $file, 'type' => 'function', 'name' => $function);
        }

return $providesret;
    }
}

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