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-rw-r--r--functions.php298
1 files changed, 298 insertions, 0 deletions
diff --git a/functions.php b/functions.php
new file mode 100644
index 0000000..9f62f32
--- /dev/null
+++ b/functions.php
@@ -0,0 +1,298 @@
+<?php
+
+function htmlescape(string|array $s): string|array {
+ if (is_array($s)) {
+ foreach ($s as $k => $v) {
+ $s[$k] = htmlescape($v);
+ }
+ return $s;
+ }
+ return htmlspecialchars($s, ENT_QUOTES, 'UTF-8');
+}
+
+function strtrim(string $str, int $len, bool &$trimmed): string {
+ if (mb_strlen($str) > $len) {
+ $str = mb_substr($str, 0, $len);
+ $trimmed = true;
+ } else {
+ $trimmed = false;
+ }
+ return $str;
+}
+
+function sizeString(int $size): string {
+ $ks = array('B', 'KiB', 'MiB', 'GiB');
+ foreach ($ks as $i => $k) {
+ if ($size < pow(1024, $i + 1)) {
+ if ($i == 0)
+ return $size . ' ' . $k;
+ return round($size / pow(1024, $i), 2).' '.$k;
+ }
+ }
+ return $size;
+}
+
+function extension(string $name): string {
+ $expl = explode('.', $name);
+ return end($expl);
+}
+
+/**
+ * @param string $filename
+ * @return resource|bool
+ */
+function imageopen(string $filename) {
+ $size = getimagesize($filename);
+ $types = [
+ 1 => 'gif',
+ 2 => 'jpeg',
+ 3 => 'png'
+ ];
+ if (!$size || !isset($types[$size[2]]))
+ return null;
+ return call_user_func('imagecreatefrom'.$types[$size[2]], $filename);
+}
+
+function detect_image_type(string $filename) {
+ $size = getimagesize($filename);
+ $types = [
+ 1 => 'gif',
+ 2 => 'jpg',
+ 3 => 'png'
+ ];
+ if (!$size || !isset($types[$size[2]]))
+ return false;
+ return $types[$size[2]];
+}
+
+function transliterate(string $string): string {
+ $roman = array(
+ 'Sch', 'sch', 'Yo', 'Zh', 'Kh', 'Ts', 'Ch', 'Sh', 'Yu', 'ya', 'yo',
+ 'zh', 'kh', 'ts', 'ch', 'sh', 'yu', 'ya', 'A', 'B', 'V', 'G', 'D', 'E',
+ 'Z', 'I', 'Y', 'K', 'L', 'M', 'N', 'O', 'P', 'R', 'S', 'T', 'U', 'F',
+ '', 'Y', '', 'E', 'a', 'b', 'v', 'g', 'd', 'e', 'z', 'i', 'y', 'k',
+ 'l', 'm', 'n', 'o', 'p', 'r', 's', 't', 'u', 'f', '', 'y', '', 'e'
+ );
+ $cyrillic = array(
+ 'Щ', 'щ', 'Ё', 'Ж', 'Х', 'Ц', 'Ч', 'Ш', 'Ю', 'я', 'ё', 'ж', 'х', 'ц',
+ 'ч', 'ш', 'ю', 'я', 'А', 'Б', 'В', 'Г', 'Д', 'Е', 'З', 'И', 'Й', 'К',
+ 'Л', 'М', 'Н', 'О', 'П', 'Р', 'С', 'Т', 'У', 'Ф', 'Ь', 'Ы', 'Ъ', 'Э',
+ 'а', 'б', 'в', 'г', 'д', 'е', 'з', 'и', 'й', 'к', 'л', 'м', 'н', 'о',
+ 'п', 'р', 'с', 'т', 'у', 'ф', 'ь', 'ы', 'ъ', 'э'
+ );
+ return str_replace($cyrillic, $roman, $string);
+}
+
+/**
+ * @param resource $img
+ * @param ?int $w
+ * @param ?int $h
+ * @param ?int[] $transparent_color
+ */
+function imageresize(&$img, ?int $w = null, ?int $h = null, ?array $transparent_color = null) {
+ assert(is_int($w) || is_int($h));
+
+ $curw = imagesx($img);
+ $curh = imagesy($img);
+
+ if (!is_int($w) && is_int($h)) {
+ $w = round($curw / ($curw / $w));
+ } else if (is_int($w) && !is_int($h)) {
+ $h = round($curh / ($curh / $h));
+ }
+
+ $img2 = imagecreatetruecolor($w, $h);
+ if (is_array($transparent_color)) {
+ list($r, $g, $b) = $transparent_color;
+ $col = imagecolorallocate($img2, $r, $g, $b);
+ imagefilledrectangle($img2, 0, 0, $w, $h, $col);
+ } else {
+ imagealphablending($img2, false);
+ imagesavealpha($img2, true);
+ imagefilledrectangle($img2, 0, 0, $w, $h, imagecolorallocatealpha($img2, 255, 255, 255, 127));
+ }
+
+ imagecopyresampled($img2, $img, 0, 0, 0, 0, $w, $h, $curw, $curh);
+ imagedestroy($img);
+
+ $img = $img2;
+}
+
+function rrmdir(string $dir, bool $dont_delete_dir = false): bool {
+ if (!is_dir($dir)) {
+ logError('rrmdir: '.$dir.' is not a directory');
+ return false;
+ }
+
+ $objects = scandir($dir);
+ foreach ($objects as $object) {
+ if ($object != '.' && $object != '..') {
+ if (is_dir($dir.'/'.$object)) {
+ rrmdir($dir.'/'.$object);
+ } else {
+ unlink($dir.'/'.$object);
+ }
+ }
+ }
+
+ if (!$dont_delete_dir)
+ rmdir($dir);
+
+ return true;
+}
+
+function ip2ulong(string $ip): int {
+ return sprintf("%u", ip2long($ip));
+}
+
+function ulong2ip(int $ip): string {
+ $long = 4294967295 - ($ip - 1);
+ return long2ip(-$long);
+}
+
+function from_camel_case(string $s): string {
+ $buf = '';
+ $len = strlen($s);
+ for ($i = 0; $i < $len; $i++) {
+ if (!ctype_upper($s[$i])) {
+ $buf .= $s[$i];
+ } else {
+ $buf .= '_'.strtolower($s[$i]);
+ }
+ }
+ return $buf;
+}
+
+function to_camel_case(string $input, string $separator = '_'): string {
+ return lcfirst(str_replace($separator, '', ucwords($input, $separator)));
+}
+
+function str_replace_once(string $needle, string $replace, string $haystack) {
+ $pos = strpos($haystack, $needle);
+ if ($pos !== false)
+ $haystack = substr_replace($haystack, $replace, $pos, strlen($needle));
+ return $haystack;
+}
+
+function strgen(int $len): string {
+ $buf = '';
+ for ($i = 0; $i < $len; $i++) {
+ $j = mt_rand(0, 61);
+ if ($j >= 36) {
+ $j += 13;
+ } else if ($j >= 10) {
+ $j += 7;
+ }
+ $buf .= chr(48 + $j);
+ }
+ return $buf;
+}
+
+function sanitize_filename(string $name): string {
+ $name = mb_strtolower($name);
+ $name = transliterate($name);
+ $name = preg_replace('/[^\w\d\-_\s.]/', '', $name);
+ $name = preg_replace('/\s+/', '_', $name);
+ return $name;
+}
+
+function glob_escape(string $pattern): string {
+ if (strpos($pattern, '[') !== false || strpos($pattern, ']') !== false) {
+ $placeholder = uniqid();
+ $replaces = array( $placeholder.'[', $placeholder.']', );
+ $pattern = str_replace( array('[', ']', ), $replaces, $pattern);
+ $pattern = str_replace( $replaces, array('[[]', '[]]', ), $pattern);
+ }
+ return $pattern;
+}
+
+/**
+ * Does not support flag GLOB_BRACE
+ *
+ * @param string $pattern
+ * @param int $flags
+ * @return array
+ */
+function glob_recursive(string $pattern, int $flags = 0): array {
+ $files = glob(glob_escape($pattern), $flags);
+ foreach (glob(glob_escape(dirname($pattern)).'/*', GLOB_ONLYDIR|GLOB_NOSORT) as $dir) {
+ $files = array_merge($files, glob_recursive($dir.'/'.basename($pattern), $flags));
+ }
+ return $files;
+}
+
+function setperm(string $file): void {
+ global $config;
+
+ // chgrp
+ $gid = filegroup($file);
+ if ($gid != $config['group']) {
+ if (!chgrp($file, $config['group'])) {
+ logError(__FUNCTION__.": chgrp() failed on $file");
+ }
+ }
+
+ // chmod
+ $perms = fileperms($file);
+ $need_perms = is_dir($file) ? $config['dirs_mode'] : $config['files_mode'];
+ if (($perms & $need_perms) !== $need_perms) {
+ if (!chmod($file, $need_perms)) {
+ logError(__FUNCTION__.": chmod() failed on $file");
+ }
+ }
+}
+
+function salt_password(string $pwd): string {
+ global $config;
+ return hash('sha256', "{$pwd}|{$config['password_salt']}");
+}
+
+function exectime(?string $format = null) {
+ $time = round(microtime(true) - START_TIME, 4);
+ if (!is_null($format))
+ $time = sprintf($format, $time);
+ return $time;
+}
+
+function fullURL(string $url): string {
+ global $config;
+ return 'https://'.$config['domain'].$url;
+}
+
+function getDb(): SQLiteConnection|MySQLConnection|null {
+ global $config;
+ static $link = null;
+ if (!is_null($link))
+ return $link;
+
+ switch ($config['db']['type']) {
+ case 'mysql':
+ $link = new MySQLConnection(
+ $config['db']['host'],
+ $config['db']['user'],
+ $config['db']['password'],
+ $config['db']['database']);
+ if (!$link->connect()) {
+ if (PHP_SAPI != 'cli') {
+ header('HTTP/1.1 503 Service Temporarily Unavailable');
+ header('Status: 503 Service Temporarily Unavailable');
+ header('Retry-After: 300');
+ die('database connection failed');
+ } else {
+ fwrite(STDERR, 'database connection failed');
+ exit(1);
+ }
+ }
+ break;
+
+ case 'sqlite':
+ $link = new SQLiteConnection($config['db']['path']);
+ break;
+
+ default:
+ logError('invalid database type');
+ break;
+ }
+
+ return $link;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 02:10:11 +0000