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<?php
/**
 * package.xml parsing class, package.xml version 1.0
 *
 * 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
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a1
 */
/**
 * package.xml abstraction class
 */
require_once 'PEAR/PackageFile/v1.php';
/**
 * Parser for package.xml version 1.0
 * @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: @PEAR-VER@
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.4.0a1
 */
class PEAR_PackageFile_Parser_v1
{
    var $_registry;
    var $_config;
    var $_logger;
    /**
     * BC hack to allow PEAR_Common::infoFromString() to sort of
     * work with the version 2.0 format - there's no filelist though
     * @param PEAR_PackageFile_v2
     */
    function fromV2($packagefile)
    {
        $info = $packagefile->getArray(true);
        $ret = new PEAR_PackageFile_v1;
        $ret->fromArray($info['old']);
    }

    function setConfig(&$c)
    {
        $this->_config = &$c;
        $this->_registry = &$c->getRegistry();
    }

    function setLogger(&$l)
    {
        $this->_logger = &$l;
    }

    /**
     * @param string contents of package.xml file, version 1.0
     * @return bool success of parsing
     */
    function &parse($data, $file, $archive = false)
    {
        if (!extension_loaded('xml')) {
            return PEAR::raiseError('Cannot create xml parser for parsing package.xml, no xml extension');
        }
        $xp = xml_parser_create();
        if (!$xp) {
            $a = &PEAR::raiseError('Cannot create xml parser for parsing package.xml');
            return $a;
        }
        xml_set_object($xp, $this);
        xml_set_element_handler($xp, '_element_start_1_0', '_element_end_1_0');
        xml_set_character_data_handler($xp, '_pkginfo_cdata_1_0');
        xml_parser_set_option($xp, XML_OPTION_CASE_FOLDING, false);

        $this->element_stack = array();
        $this->_packageInfo = array('provides' => array());
        $this->current_element = false;
        unset($this->dir_install);
        $this->_packageInfo['filelist'] = array();
        $this->filelist =& $this->_packageInfo['filelist'];
        $this->dir_names = array();
        $this->in_changelog = false;
        $this->d_i = 0;
        $this->cdata = '';
        $this->_isValid = true;

        if (!xml_parse($xp, $data, 1)) {
            $code = xml_get_error_code($xp);
            $line = xml_get_current_line_number($xp);
            xml_parser_free($xp);
            $a = PEAR::raiseError(sprintf("XML error: %s at line %d",
                           $str = xml_error_string($code), $line), 2);
            return $a;
        }

        xml_parser_free($xp);

        $pf = new PEAR_PackageFile_v1;
        $pf->setConfig($this->_config);
        if (isset($this->_logger)) {
            $pf->setLogger($this->_logger);
        }
        $pf->setPackagefile($file, $archive);
        $pf->fromArray($this->_packageInfo);
        return $pf;
    }
    // {{{ _unIndent()

    /**
     * Unindent given string
     *
     * @param string $str The string that has to be unindented.
     * @return string
     * @access private
     */
    function _unIndent($str)
    {
        // remove leading newlines
        $str = preg_replace('/^[\r\n]+/', '', $str);
        // find whitespace at the beginning of the first line
        $indent_len = strspn($str, " \t");
        $indent = substr($str, 0, $indent_len);
        $data = '';
        // remove the same amount of whitespace from following lines
        foreach (explode("\n", $str) as $line) {
            if (substr($line, 0, $indent_len) == $indent) {
                $data .= substr($line, $indent_len) . "\n";
            } elseif (trim(substr($line, 0, $indent_len))) {
                $data .= ltrim($line);
            }
        }
        return $data;
    }

    // Support for package DTD v1.0:
    // {{{ _element_start_1_0()

    /**
     * XML parser callback for ending elements.  Used for version 1.0
     * packages.
     *
     * @param resource  $xp    XML parser resource
     * @param string    $name  name of ending element
     *
     * @return void
     *
     * @access private
     */
    function _element_start_1_0($xp, $name, $attribs)
    {
        array_push($this->element_stack, $name);
        $this->current_element = $name;
        $spos = sizeof($this->element_stack) - 2;
        $this->prev_element = ($spos >= 0) ? $this->element_stack[$spos] : '';
        $this->current_attributes = $attribs;
        $this->cdata = '';
        switch ($name) {
            case 'dir':
                if ($this->in_changelog) {
                    break;
                }
                if (array_key_exists('name', $attribs) && $attribs['name'] != '/') {
                    $attribs['name'] = preg_replace(array('!\\\\+!', '!/+!'), array('/', '/'),
                        $attribs['name']);
                    if (strrpos($attribs['name'], '/') === strlen($attribs['name']) - 1) {
                        $attribs['name'] = substr($attribs['name'], 0,
                            strlen($attribs['name']) - 1);
                    }
                    if (strpos($attribs['name'], '/') === 0) {
                        $attribs['name'] = substr($attribs['name'], 1);
                    }
                    $this->dir_names[] = $attribs['name'];
                }
                if (isset($attribs['baseinstalldir'])) {
                    $this->dir_install = $attribs['baseinstalldir'];
                }
                if (isset($attribs['role'])) {
                    $this->dir_role = $attribs['role'];
                }
                break;
            case 'file':
                if ($this->in_changelog) {
                    break;
                }
                if (isset($attribs['name'])) {
                    $path = '';
                    if (count($this->dir_names)) {
                        foreach ($this->dir_names as $dir) {
                            $path .= $dir . '/';
                        }
                    }
                    $path .= preg_replace(array('!\\\\+!', '!/+!'), array('/', '/'),
                        $attribs['name']);
                    unset($attribs['name']);
                    $this->current_path = $path;
                    $this->filelist[$path] = $attribs;
                    // Set the baseinstalldir only if the file don't have this attrib
                    if (!isset($this->filelist[$path]['baseinstalldir']) &&
                        isset($this->dir_install))
                    {
                        $this->filelist[$path]['baseinstalldir'] = $this->dir_install;
                    }
                    // Set the Role
                    if (!isset($this->filelist[$path]['role']) && isset($this->dir_role)) {
                        $this->filelist[$path]['role'] = $this->dir_role;
                    }
                }
                break;
            case 'replace':
                if (!$this->in_changelog) {
                    $this->filelist[$this->current_path]['replacements'][] = $attribs;
                }
                break;
            case 'maintainers':
                $this->_packageInfo['maintainers'] = array();
                $this->m_i = 0; // maintainers array index
                break;
            case 'maintainer':
                // compatibility check
                if (!isset($this->_packageInfo['maintainers'])) {
                    $this->_packageInfo['maintainers'] = array();
                    $this->m_i = 0;
                }
                $this->_packageInfo['maintainers'][$this->m_i] = array();
                $this->current_maintainer =& $this->_packageInfo['maintainers'][$this->m_i];
                break;
            case 'changelog':
                $this->_packageInfo['changelog'] = array();
                $this->c_i = 0; // changelog array index
                $this->in_changelog = true;
                break;
            case 'release':
                if ($this->in_changelog) {
                    $this->_packageInfo['changelog'][$this->c_i] = array();
                    $this->current_release = &$this->_packageInfo['changelog'][$this->c_i];
                } else {
                    $this->current_release = &$this->_packageInfo;
                }
                break;
            case 'deps':
                if (!$this->in_changelog) {
                    $this->_packageInfo['release_deps'] = array();
                }
                break;
            case 'dep':
                // dependencies array index
                if (!$this->in_changelog) {
                    $this->d_i++;
                    isset($attribs['type']) ? ($attribs['type'] = strtolower($attribs['type'])) : false;
                    $this->_packageInfo['release_deps'][$this->d_i] = $attribs;
                }
                break;
            case 'configureoptions':
                if (!$this->in_changelog) {
                    $this->_packageInfo['configure_options'] = array();
                }
                break;
            case 'configureoption':
                if (!$this->in_changelog) {
                    $this->_packageInfo['configure_options'][] = $attribs;
                }
                break;
            case 'provides':
                if (empty($attribs['type']) || empty($attribs['name'])) {
                    break;
                }
                $attribs['explicit'] = true;
                $this->_packageInfo['provides']["$attribs[type];$attribs[name]"] = $attribs;
                break;
            case 'package' :
                if (isset($attribs['version'])) {
                    $this->_packageInfo['xsdversion'] = trim($attribs['version']);
                } else {
                    $this->_packageInfo['xsdversion'] = '1.0';
                }
                if (isset($attribs['packagerversion'])) {
                    $this->_packageInfo['packagerversion'] = $attribs['packagerversion'];
                }
                break;
        }
    }

    // }}}
    // {{{ _element_end_1_0()

    /**
     * XML parser callback for ending elements.  Used for version 1.0
     * packages.
     *
     * @param resource  $xp    XML parser resource
     * @param string    $name  name of ending element
     *
     * @return void
     *
     * @access private
     */
    function _element_end_1_0($xp, $name)
    {
        $data = trim($this->cdata);
        switch ($name) {
            case 'name':
                switch ($this->prev_element) {
                    case 'package':
                        $this->_packageInfo['package'] = $data;
                        break;
                    case 'maintainer':
                        $this->current_maintainer['name'] = $data;
                        break;
                }
                break;
            case 'extends' :
                $this->_packageInfo['extends'] = $data;
                break;
            case 'summary':
                $this->_packageInfo['summary'] = $data;
                break;
            case 'description':
                $data = $this->_unIndent($this->cdata);
                $this->_packageInfo['description'] = $data;
                break;
            case 'user':
                $this->current_maintainer['handle'] = $data;
                break;
            case 'email':
                $this->current_maintainer['email'] = $data;
                break;
            case 'role':
                $this->current_maintainer['role'] = $data;
                break;
            case 'version':
                if ($this->in_changelog) {
                    $this->current_release['version'] = $data;
                } else {
                    $this->_packageInfo['version'] = $data;
                }
                break;
            case 'date':
                if ($this->in_changelog) {
                    $this->current_release['release_date'] = $data;
                } else {
                    $this->_packageInfo['release_date'] = $data;
                }
                break;
            case 'notes':
                // try to "de-indent" release notes in case someone
                // has been over-indenting their xml ;-)
                // Trim only on the right side
                $data = rtrim($this->_unIndent($this->cdata));
                if ($this->in_changelog) {
                    $this->current_release['release_notes'] = $data;
                } else {
                    $this->_packageInfo['release_notes'] = $data;
                }
                break;
            case 'warnings':
                if ($this->in_changelog) {
                    $this->current_release['release_warnings'] = $data;
                } else {
                    $this->_packageInfo['release_warnings'] = $data;
                }
                break;
            case 'state':
                if ($this->in_changelog) {
                    $this->current_release['release_state'] = $data;
                } else {
                    $this->_packageInfo['release_state'] = $data;
                }
                break;
            case 'license':
                if ($this->in_changelog) {
                    $this->current_release['release_license'] = $data;
                } else {
                    $this->_packageInfo['release_license'] = $data;
                }
                break;
            case 'dep':
                if ($data && !$this->in_changelog) {
                    $this->_packageInfo['release_deps'][$this->d_i]['name'] = $data;
                }
                break;
            case 'dir':
                if ($this->in_changelog) {
                    break;
                }
                array_pop($this->dir_names);
                break;
            case 'file':
                if ($this->in_changelog) {
                    break;
                }
                if ($data) {
                    $path = '';
                    if (count($this->dir_names)) {
                        foreach ($this->dir_names as $dir) {
                            $path .= $dir . '/';
                        }
                    }
                    $path .= $data;
                    $this->filelist[$path] = $this->current_attributes;
                    // Set the baseinstalldir only if the file don't have this attrib
                    if (!isset($this->filelist[$path]['baseinstalldir']) &&
                        isset($this->dir_install))
                    {
                        $this->filelist[$path]['baseinstalldir'] = $this->dir_install;
                    }
                    // Set the Role
                    if (!isset($this->filelist[$path]['role']) && isset($this->dir_role)) {
                        $this->filelist[$path]['role'] = $this->dir_role;
                    }
                }
                break;
            case 'maintainer':
                if (empty($this->_packageInfo['maintainers'][$this->m_i]['role'])) {
                    $this->_packageInfo['maintainers'][$this->m_i]['role'] = 'lead';
                }
                $this->m_i++;
                break;
            case 'release':
                if ($this->in_changelog) {
                    $this->c_i++;
                }
                break;
            case 'changelog':
                $this->in_changelog = false;
                break;
        }
        array_pop($this->element_stack);
        $spos = sizeof($this->element_stack) - 1;
        $this->current_element = ($spos > 0) ? $this->element_stack[$spos] : '';
        $this->cdata = '';
    }

    // }}}
    // {{{ _pkginfo_cdata_1_0()

    /**
     * XML parser callback for character data.  Used for version 1.0
     * packages.
     *
     * @param resource  $xp    XML parser resource
     * @param string    $name  character data
     *
     * @return void
     *
     * @access private
     */
    function _pkginfo_cdata_1_0($xp, $data)
    {
        if (isset($this->cdata)) {
            $this->cdata .= $data;
        }
    }

    // }}}
}
?>