created plugin custer, and removed shortcodes change_id and user_infos from cipf plugin

plugins/custer/user_infos.php

@@ -0,0 +1,182 @@
+<?php
+namespace CUSTER;
+
+/*
+* it means someone outside wp is accessing the file, in this case kill it.
+*/
+if (!defined('ABSPATH')) {
+	die('You can not access this file!');
+}
+
+
+
+
+
+function extract_if_array_size_one($value) {
+	if (is_array($value) && count($value) === 1)
+		return reset($value);
+	return $value;
+}
+
+function merge_two_arrays($array1, $array2) {
+	$new_array = $array1;
+	foreach ($array2 as $key2 => $value2) {
+		$value = extract_if_array_size_one($value2);
+		// if key was not in first array, add the new element to it
+		if (!isset($new_array[$key2])) {
+			$new_array[$key2] = $value2;
+			continue;
+		}
+		// if key was in first array, add both in an array
+		$value1 = extract_if_array_size_one($new_array[$key2]);
+		if (empty($value1))
+			$new_array[$key2] = $value2;
+		else if (empty($value2))
+			$new_array[$key2] = $value1;
+		else {
+			$new_value = array($value1, $value2);
+			$new_array[$key] = $new_value;
+		}
+	}
+	return $new_array;
+}
+
+
+function output_list_front($array, $current_user, $user_id) {
+	$output = '<ul>';
+	foreach ($array as $key => $value) {
+		if (str_starts_with($key, '_'))
+			continue ;
+		$value = format_user_info($key, $current_user, $user_id);
+		$output .= '<li>';
+		$output .= '<span>';
+		$output .= $key;
+		$output .= ' : ';
+		$output .= $value;
+		$output .= '</span>';
+		$output .= '</li>';
+	}
+	$output .= '</ul>';
+	return $output;
+}
+
+
+
+/*
+* shortcode to write user info of post author
+* 0 or 1 argument, usage :
+* - [cipf_user_info]                                     -> list of all availables infos
+* - [cipf_user_info user_email]                          -> display the email
+* - [cipf_user_info user_email user_login]               -> display the email
+* - [cipf_user_info user_email id='logged_in']           -> display the email of the connected user
+* - [cipf_user_info user_email id='author']              -> display the email of the creator of the page/post
+* - [cipf_user_info user_email id='logged_in' important] -> display the email of the connected user, even if surrounded by shortcode 'custer_change_id'
+*                                                           important keyword has no effect if id='author'
+*
+*/
+function current_user_infos($atts) {
+	$is_important = false;
+
+	/*
+	* choose the default id target :
+	* - logged_in
+	* - author
+	*
+	$id_is = 'logged_in';
+	*/
+	$id_is = 'author';
+
+
+	/*
+	* has parameter 'id' ?
+	* has parameter important ?
+	* if yes, removes them from $atts
+	*
+	*/
+	if (is_array($atts)) {
+		if (isset($atts['id'])) {
+			$id_is = $atts['id'];
+			unset($atts['id']);
+		}
+		if ($id_is === 'logged_in') {
+			if (in_array('important', $atts)) {
+				$is_important = true;
+				$key = array_search('important', $atts);
+				unset($atts[$key]);
+			}
+		}
+	}
+
+
+	/*
+	* should output all or a specific parameter ?
+	*
+	*/
+	$output_all = false;
+	if (empty($atts))
+		$output_all = true;
+	else if (count($atts) === 0)
+		$output_all = true;
+
+
+	/*
+	* get id according to attributes,
+	*   and the atts of the other shortcode 'custer_change_id' if in use
+	*
+	*/
+	if ($id_is === 'logged_in') {
+		if ($is_important) {
+			$user_id = Custer::get_current_user_backup();
+			if ($user_id === null)
+				$user_id = get_current_user_id();
+		}
+		else {
+			$user_id = get_current_user_id();
+		}
+	}
+	else if ($id_is === 'author') {
+		$user_id = get_author_id();
+	}
+	else {
+		return '';
+	}
+
+
+	/*
+	* if id is for 'author' && shortcode 'custer_change_id' is set
+	*
+	*/
+
+
+	$current_user = get_user_by('id', $user_id);
+
+
+	/*
+	* output all the available parameters (for help)
+	*
+	*/
+	if ($output_all) {
+		$user_properties = (array) get_userdata($user_id)->data;
+		$user_metas = get_user_meta($user_id);
+		$user_infos = merge_two_arrays($user_metas, $user_properties);
+		return output_list_front($user_infos, $current_user, $user_id);
+	}
+
+
+	/*
+	* real purpose of this shortcode :
+	* only return the first argument
+	*
+	*/
+	if (is_array($atts))
+		$query = $atts[0];
+	else if (is_string($atts))
+		$query = $atts;
+	else
+		return '';
+	return format_user_info($query, $current_user, $user_id);
+}
+add_shortcode('custer_user_info', __NAMESPACE__.'\current_user_infos');
+
+
+?>