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| Rev | Author | Line No. | Line |
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| 38 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /* |
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| 4 | * PHP Utilities - Misc functions |
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| 5 | * Copyright 2019 - 2022 Daniel Marschall, ViaThinkSoft |
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| 55 | daniel-mar | 6 | * Revision: 2022-12-27 |
| 38 | daniel-mar | 7 | * |
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 9 | * you may not use this file except in compliance with the License. |
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| 10 | * You may obtain a copy of the License at |
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| 11 | * |
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| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 13 | * |
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| 14 | * Unless required by applicable law or agreed to in writing, software |
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| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 17 | * See the License for the specific language governing permissions and |
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| 18 | * limitations under the License. |
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| 19 | */ |
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| 20 | |||
| 21 | // array(89,51,10,10) => 'Y3\012\012' |
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| 22 | function c_literal($byte_array) { |
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| 23 | $out = "'"; |
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| 24 | foreach ($byte_array as $c) { |
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| 25 | if (is_string($c)) $c = ord($c); |
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| 26 | if ((($c >= 0x00) && ($c <= 0x1F)) || ($c >= 0x7F)) { |
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| 27 | // For non-printable characters use octal notation: |
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| 28 | // \000 ... \377 |
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| 39 | daniel-mar | 29 | $out .= "\\".str_pad(base_convert(''.$c,10,8), 3, '0', STR_PAD_LEFT); |
| 38 | daniel-mar | 30 | } else { |
| 31 | if (chr($c) == "'") $out .= '\\'; |
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| 32 | $out .= chr($c); |
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| 33 | } |
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| 34 | } |
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| 35 | $out .= "'"; |
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| 36 | return $out; |
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| 37 | } |
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| 38 | |||
| 39 | function c_literal_hexstr($hexstr) { |
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| 40 | $odd_char = (strlen($hexstr)%2 != 0) ? '0x'.substr($hexstr,-1).'<<4' : ''; |
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| 39 | daniel-mar | 41 | $hexstr = substr($hexstr,0,2*(int)floor(strlen($hexstr)/2)); |
| 38 | daniel-mar | 42 | if ($hexstr != '') { |
| 43 | $ary = str_split(hex2bin($hexstr)); |
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| 44 | foreach ($ary as &$a) $a = ord($a); |
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| 45 | return rtrim(c_literal($ary).' '.$odd_char); |
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| 46 | } else { |
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| 47 | return $odd_char; |
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| 48 | } |
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| 49 | } |
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| 50 | |||
| 51 | function generateRandomString($length) { |
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| 52 | // Note: This function can be used in temporary file names, so you |
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| 53 | // may not generate illegal file name characters. |
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| 54 | $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
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| 55 | $charactersLength = strlen($characters); |
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| 56 | $randomString = ''; |
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| 57 | for ($i = 0; $i < $length; $i++) { |
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| 58 | $randomString .= $characters[rand(0, $charactersLength - 1)]; |
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| 59 | } |
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| 60 | return $randomString; |
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| 61 | } |
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| 62 | |||
| 63 | function trim_br($html) { |
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| 64 | $count = 0; |
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| 65 | do { $html = preg_replace('@^\s*<\s*br\s*/{0,1}\s*>@isU', '', $html, -1, $count); } while ($count > 0); // left trim |
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| 66 | do { $html = preg_replace('@<\s*br\s*/{0,1}\s*>\s*$@isU', '', $html, -1, $count); } while ($count > 0); // right trim |
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| 67 | return $html; |
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| 68 | } |
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| 69 | |||
| 70 | function insertWhitespace($str, $index) { |
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| 71 | return substr($str, 0, $index) . ' ' . substr($str, $index); |
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| 72 | } |
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| 73 | |||
| 74 | function js_escape($data) { |
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| 75 | // TODO.... json_encode?? |
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| 76 | $data = str_replace('\\', '\\\\', $data); |
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| 77 | $data = str_replace('\'', '\\\'', $data); |
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| 78 | return "'" . $data . "'"; |
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| 79 | } |
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| 80 | |||
| 81 | function get_calling_function() { |
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| 82 | $ex = new Exception(); |
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| 83 | $trace = $ex->getTrace(); |
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| 39 | daniel-mar | 84 | if (!isset($trace[2])) return '(main)'; |
| 38 | daniel-mar | 85 | $final_call = $trace[2]; |
| 86 | return $final_call['file'].':'.$final_call['line'].'/'.$final_call['function'].'()'; |
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| 87 | } |
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| 88 | |||
| 89 | function convert_to_utf8_no_bom($cont) { |
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| 52 | daniel-mar | 90 | $cont = vts_utf8_encode($cont); |
| 38 | daniel-mar | 91 | |
| 92 | // Remove BOM |
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| 93 | $bom = pack('H*','EFBBBF'); |
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| 94 | $cont = preg_replace("/^$bom/", '', $cont); |
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| 95 | return $cont; |
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| 96 | } |
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| 97 | |||
| 52 | daniel-mar | 98 | function vts_utf8_encode($text) { |
| 99 | $enc = mb_detect_encoding($text, null, true); |
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| 100 | if ($enc === false) $enc = mb_detect_encoding($text, ['ASCII', 'UTF-8', 'Windows-1252', 'ISO-8859-1'], true); |
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| 101 | if ($enc === false) $enc = null; |
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| 102 | |||
| 103 | if ($enc === 'UTF-8') return $text; |
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| 104 | |||
| 105 | $res = mb_convert_encoding($text, 'UTF-8', $enc); |
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| 106 | if ($res === false) $res = iconv('UTF-8', 'UTF-8//IGNORE', $text); |
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| 107 | |||
| 108 | return $res; |
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| 109 | } |
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| 110 | |||
| 38 | daniel-mar | 111 | function stripHtmlComments($html) { |
| 112 | // https://stackoverflow.com/questions/11337332/how-to-remove-html-comments-in-php |
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| 113 | $html = preg_replace("~<!--(?!<!)[^\[>].*?-->~s", "", $html); |
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| 114 | return $html; |
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| 115 | } |
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| 116 | |||
| 117 | function wildcard_is_dir($dir) { |
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| 118 | // Example usage: if (!wildcard_is_dir(OIDplus::localpath().'plugins/'.'*'.'/design/'.$value)) throw new Exception("Design does not exist") |
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| 119 | $dirs = @glob($dir); |
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| 120 | if ($dirs) foreach ($dirs as $dir) { |
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| 121 | if (is_dir($dir)) return true; |
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| 122 | } |
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| 123 | return false; |
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| 124 | } |
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| 125 | |||
| 126 | function isInternetExplorer() { |
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| 127 | // see also includes/oidplus_base.js |
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| 128 | $ua = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : ''; |
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| 129 | return ((strpos($ua,'MSIE ') !== false) || (strpos($ua,'Trident/') !== false)); |
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| 39 | daniel-mar | 130 | } |