From 8b44ee9d93148bca4f73df48eb2906c8b66d15e3 Mon Sep 17 00:00:00 2001
From: rboren <rboren@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Wed, 30 Jun 2004 15:31:49 +0000
Subject: [PATCH] Add WP_Query_State class.  Introduce is_single(),
 is_archive(), and friends.

git-svn-id: http://svn.automattic.com/wordpress/trunk@1449 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-blog-header.php        |   2 +
 wp-includes/classes.php   | 129 ++++++++++++++++++++++++++++++++++++++
 wp-includes/functions.php |  48 ++++++++++++++
 wp-settings.php           |   1 +
 4 files changed, 180 insertions(+)
 create mode 100644 wp-includes/classes.php

diff --git a/wp-blog-header.php b/wp-blog-header.php
index 18f80f02d1..ddb4c646c4 100644
--- a/wp-blog-header.php
+++ b/wp-blog-header.php
@@ -147,6 +147,8 @@ foreach (array_merge($wpvarstoreset, $more_wpvars) as $wpvar) {
 
 $query_string = apply_filters('query_string', $query_string);
 
+$wp_query_state->parse_query($query_string);
+
 // Update some caches.
 update_category_cache();
 
diff --git a/wp-includes/classes.php b/wp-includes/classes.php
new file mode 100644
index 0000000000..0e2652fb7f
--- /dev/null
+++ b/wp-includes/classes.php
@@ -0,0 +1,129 @@
+<?php
+
+class WP_Query_State {
+    var $single = false;
+    var $archive = false;
+    var $date = false;
+    var $author = false;
+    var $category = false;
+    var $search = false;
+    var $feed = false;
+    var $home = false;
+    
+    function init () {
+        $this->single = false;
+        $this->archive = false;
+        $this->date = false;
+        $this->author = false;
+        $this->category = false;
+        $this->search = false;
+        $this->feed = false;
+        $this->home = false;
+    }
+
+    function parse_query ($query) {
+        parse_str($query);
+        $this->init();
+
+        if ('' != $m) {
+            $this->date = true;
+        }
+
+        if ('' != $hour) {
+            $this->date = true;            
+        }
+
+        if ('' != $minute) {
+            $this->date = true;
+        }
+
+        if ('' != $second) {
+            $this->date = true;
+        }
+
+        if ('' != $year) {
+            $this->date = true;
+        }
+
+        if ('' != $monthnum) {
+            $this->date = true;
+        }
+
+        if ('' != $day) {
+            $this->date = true;
+        }
+
+        if ('' != $w) {
+            $this->date = true;
+        }
+
+        if ('' != $name) {
+            $this->single = true;
+        }
+
+        if (($p != '') && ($p != 'all')) {
+            $this->single = true;
+        }
+
+        if (!empty($s)) {
+            $this->search = true;
+        }
+
+        if ((empty($cat)) || ($cat == 'all') || ($cat == '0') || 
+            // Bypass cat checks if fetching specific posts
+            (
+             intval($year) || intval($monthnum) || intval($day) || intval($w) ||
+             intval($p) || !empty($name) || !empty($s)
+             )
+            ) {
+            $this->category = false;
+        } else {
+            if (stristr($cat,'-')) {
+                $this->category = false;
+            } else {
+                $this->category = true;
+            }
+        }
+
+        if ('' != $category_name) {
+            $this->category = true;
+        }
+
+        if ((empty($author)) || ($author == 'all') || ($author == '0')) {
+            $this->author = false;
+        } else {
+            $this->author = true;
+        }
+
+        if ('' != $author_name) {
+            $this->author = true;
+        }
+
+        if ('' != $feed) {
+            $this->feed = true;
+        }
+
+        if ( ($this->date || $this->author || $this->category)
+             && (! $this->single)) {
+            $this->archive = true;
+        }
+
+        if ( ! ($this->archive || $this->single || $this->search || $this->feed)) {
+            $this->home = true;
+        }
+
+    }
+
+    function WP_Query_State ($query = '') {
+        if (! empty($query)) {
+            $this->parse_query($query);
+        }
+    }
+}
+
+// Make a global instance.
+if (! isset($wp_query_state)) {
+    $wp_query_state = new WP_Query_State();
+}
+
+?>
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 527bdfbd9a..70460d865f 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1805,4 +1805,52 @@ function wp_head() {
 	do_action('wp_head', '');
 }
 
+function is_single () {
+    global $wp_query_state;
+
+    return $wp_query_state->single;
+}
+
+function is_archive () {
+    global $wp_query_state;
+
+    return $wp_query_state->archive;
+}
+
+function is_date () {
+    global $wp_query_state;
+
+    return $wp_query_state->date;
+}
+
+function is_author () {
+    global $wp_query_state;
+
+    return $wp_query_state->author;
+}
+
+function is_category () {
+    global $wp_query_state;
+
+    return $wp_query_state->category;
+}
+
+function is_search () {
+    global $wp_query_state;
+
+    return $wp_query_state->search;
+}
+
+function is_feed () {
+    global $wp_query_state;
+
+    return $wp_query_state->search;
+}
+
+function is_home () {
+    global $wp_query_state;
+
+    return $wp_query_state->home;
+}
+
 ?>
\ No newline at end of file
diff --git a/wp-settings.php b/wp-settings.php
index 26a44ae12f..a2c4353b46 100644
--- a/wp-settings.php
+++ b/wp-settings.php
@@ -47,6 +47,7 @@ if ( !(phpversion() >= '4.1') )
 	die( 'Your server is running PHP version ' . phpversion() . ' but WordPress requires at least 4.1' );
 
 
+require (ABSPATH . WPINC . '/classes.php');
 require (ABSPATH . WPINC . '/functions.php');
 timer_start();
 require (ABSPATH . WPINC . '/functions-formatting.php');