File zp-extensions/seo_locale.php

  1: <?php
  2: 
  3: /**
  4:  * Forces language selection via an URI parameter.
  5:  *
  6:  * This filter will detect a language setting from the URI and
  7:  * set the locale accordingly.
  8:  *
  9:  * In addition, theme URLs will have the language-id inserted into them
 10:  * so that the above processing will result in the language being set.
 11:  *
 12:  * This plugin should not be used if you are using <i>subdomain locales</i>
 13:  * (See the dynamic_locales plugin.)
 14:  *
 15:  * The URL format is:<br>
 16:  * <var>mod_rewrite</var><br>
 17:  *          / <i>language-id</i> / <i>standard url</i><br>
 18:  * <var>else</var><br>
 19:  *          <i>standard url</i>?locale=<i>language-id</i><br>
 20:  * Where <i>language-id</i> is the local identifier (e.g. en, en_US, fr_FR, etc.)
 21:  *
 22:  *
 23:  * <b>NOTE:</b> the implementation of these URIs requires that Zenphoto parse the URI, save the
 24:  * language request to a cookie, then redirect to the "native" URI. This means that there is an extra
 25:  * redirect for <b>EACH</b> page request!
 26:  *
 27:  * If your site will support it, we suggest you use the dynamic_locales plugin <i>subdomain locales</i> option
 28:  * instead for better performance.
 29:  *
 30:  * @author Stephen Billard (sbillard)
 31:  * @package plugins
 32:  * @subpackage seo
 33:  */
 34: $plugin_is_filter = 5 | CLASS_PLUGIN;
 35: $plugin_description = gettext("Allows setting language locale through the URI.");
 36: $plugin_notice = gettext('<strong>Note:</strong> This plugin is not activated for <em>back&#8209;end</em> (administrative) URLs. However, once activated, the language is remembered, even for the <em>back&#8209;end</em>.');
 37: $plugin_author = "Stephen Billard (sbillard)";
 38: $plugin_disable = (!MOD_REWRITE) ? gettext('<em>mod_rewrite</em> must be enabled for this plugin to function.') : (getOption('dynamic_locale_subdomain') && extensionEnabled('dynamic-locale')) ? gettext('This plugin is not compatible with the <code>dynamic locale</code> <em>Use subdomains</em> option') : false;
 39: 
 40: if ($plugin_disable) {
 41:     enableExtension('seo_locale', 0);
 42: } else {
 43:     zp_register_filter('load_request', 'seo_locale::load_request');
 44:     if (!defined('SEO_WEBPATH')) {
 45:         define('SEO_WEBPATH', seo_locale::localePath());
 46:         define('SEO_FULLWEBPATH', seo_locale::localePath(true));
 47:     }
 48: }
 49: 
 50: class seo_locale {
 51: 
 52:     static function load_request($allow) {
 53:         $uri = getRequestURI();
 54:         $parts = explode('?', $uri);
 55:         $uri = $parts[0];
 56:         $path = ltrim(substr($uri, strlen(WEBPATH) + 1), '/');
 57:         if (empty($path)) {
 58:             return $allow;
 59:         } else {
 60:             $rest = strpos($path, '/');
 61:             if ($rest === false) {
 62:                 if (strpos($path, '?') === 0) {
 63:                     // only a parameter string
 64:                     return $allow;
 65:                 }
 66:                 $l = $path;
 67:             } else {
 68:                 $l = substr($path, 0, $rest);
 69:             }
 70:         }
 71:         $locale = validateLocale($l, 'seo_locale');
 72:         if ($locale) {
 73:             // set the language cookie and redirect to the "base" url
 74:             zp_setCookie('dynamic_locale', $locale);
 75:             $uri = pathurlencode(preg_replace('|/' . $l . '[/$]|', '/', $uri));
 76:             if (isset($parts[1])) {
 77:                 $uri .= '?' . $parts[1];
 78:             }
 79:             header("HTTP/1.0 302 Found");
 80:             header("Status: 302 Found");
 81:             header('Location: ' . $uri);
 82:             exitZP();
 83:         }
 84:         return $allow;
 85:     }
 86: 
 87:     static function localePath($full = false, $loc = NULL) {
 88:         global $_zp_page, $_zp_gallery_page;
 89:         if ($full) {
 90:             $path = FULLWEBPATH;
 91:         } else {
 92:             $path = WEBPATH;
 93:         }
 94:         if ($locale = zpFunctions::getLanguageText($loc)) {
 95:             $path .= '/' . $locale;
 96:         }
 97:         return $path;
 98:     }
 99: 
100: }
101: 
102: ?>
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