<?php
/**
* This file is part of Aksara CMS, both framework and publishing
* platform.
*
* @author Aby Dahana <abydahana@gmail.com>
* @copyright (c) Aksara Laboratory <https://aksaracms.com>
* @license MIT License
*
* This source file is subject to the MIT license that is bundled
* with this source code in the LICENSE.txt file.
*
* When the signs is coming, those who don't believe at "that time"
* have only two choices, commit suicide or become brutal.
*/
if (! function_exists('truncate')) {
/**
* Truncate the string
*
* @param string $string
* @param int $limit
* @param string $pad
*/
function truncate($string = null, $limit = 0, $pad = '...')
{
if (! $string) {
return;
}
$string = strip_tags($string);
if ($limit && strlen($string) >= $limit) {
$string = substr($string, 0, $limit) . $pad;
}
return $string;
}
}
if (! function_exists('is_json')) {
/**
* Check if JSON is valid
*
* @param mixed|null $string
*/
function is_json($string = null)
{
if ($string && is_string($string)) {
$string = json_decode($string, true);
if (json_last_error() === JSON_ERROR_NONE) {
return true;
}
}
return false;
}
}
if (! function_exists('make_json')) {
/**
* Generate the response as JSON format
*
* @param object|array $data
* @param string $filename
*/
function make_json($data = [], $filename = null)
{
ini_set('max_execution_time', 0);
ini_set('memory_limit', -1);
$html = null;
if (isset($data->html)) {
$html = $data->html;
/* make a backup of "pre" tag */
preg_match_all('#\<pre.*\>(.*)\<\/pre\>#Uis', $html, $pre_backup);
$html = str_replace($pre_backup[0], array_map(function ($element) {return '<pre>' . $element . '</pre>';}, array_keys($pre_backup[0])), $html);
$html = trim(preg_replace(['/\s+/', '/\>[^\S ]+/s', '/[^\S ]+\</s', '/(\>)\s*(\<)/m'], [' ', '>', '<', '$1$2'], $html));
/* rollback the pre tag */
$html = str_replace(array_map(function ($element) {return '<pre>' . $element . '</pre>';}, array_keys($pre_backup[0])), $pre_backup[0], $html);
}
if ($html) {
$data->html = $html;
}
if (isset($data->status) && 200 === $data->status) {
$data->_token = sha1(current_page() . ENCRYPTION_KEY . get_userdata('session_generated'));
}
$data = encoding_fixer($data);
$minify_pattern = [
'/[\r\n\t\s]+/' => ' ', // Replace end of line by space
'/\>[^\S ]+/s' => '>', // Strip whitespaces after tags, except space
'/[^\S ]+\</s' => '<', // Strip whitespaces before tags, except space
'/(\s)+/s' => '\\1', // Shorten multiple whitespace sequences
'/<!--(.|\s)*?-->/' => '' // Remove HTML comments
];
$output = preg_replace(array_keys($minify_pattern), array_values($minify_pattern), json_encode($data));
http_response_code(200);
header('Content-Type: application/json');
if ($filename) {
header('Content-Disposition: attachment; filename=' . $filename . (stripos($filename, '.json') === false ? '.json' : null));
}
// Add security headers
header('Permissions-Policy: geolocation=(self "' . base_url() . '")');
header('Referrer-Policy: same-origin');
header('Set-Cookie: HttpOnly; Secure');
header('Strict-Transport-Security: max-age=31536000; includeSubDomains');
header('X-Content-Type-Options: nosniff');
header('X-Frame-Options: SAMEORIGIN');
header('X-XSS-Protection: 1; mode=block');
exit($output);
}
}
if (! function_exists('encoding_fixer')) {
/**
* Fix malformed UTF-8 characters, possibly incorrectly encoded
* json return
*
* @param array|string $data
*/
function encoding_fixer($data = [])
{
if (is_string($data)) {
$encoding = mb_detect_encoding($data);
$data = mb_convert_encoding($data, 'UTF-8', $encoding);
} elseif (is_array($data)) {
foreach ($data as $key => $val) {
$data[$key] = encoding_fixer($val);
}
}
return $data;
}
}
if (! function_exists('time_ago')) {
/**
* Convert timestamp to time ago
*
* @param string $datetime
*/
function time_ago($datetime = null, bool $full = true, bool $short = false)
{
$time_difference = time() - strtotime($datetime);
if ($time_difference < 1) {
return strtolower(phrase('Just now'));
}
$condition = [
(12 * 30 * 24 * 60 * 60) => ($full ? strtolower(phrase('year')) : strtolower(phrase('yr'))),
(30 * 24 * 60 * 60) => strtolower(phrase('month')),
(24 * 60 * 60) => strtolower(phrase('day')),
(60 * 60) => ($full ? strtolower(phrase('hour')) : strtolower(phrase('hr'))),
60 => ($full ? strtolower(phrase('minute')) : strtolower(phrase('min'))),
1 => ($full ? strtolower(phrase('second')) : strtolower(phrase('sec')))
];
foreach ($condition as $seconds => $label) {
$day = $time_difference / $seconds;
if ($day >= 1) {
$time = round($day);
return $time . ' ' . $label . ($time > 1 ? strtolower(phrase('s')) : '') . ' ' . (! $short ? strtolower(phrase('ago')) : null);
}
}
}
}
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