include/misc.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2010 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 function quoted_printable_encode($input, $line_max = 76)
  23 {
  24     $lines = preg_split("/(?:\r\n|\r|\n)/", $input);
  25     $eol = "\n";
  26     $linebreak = "=0D=0A=\n    ";
  27     $escape = "=";
  28     $output = "";
  29
  30     foreach ($lines as $j => $line) {
  31         $linlen = strlen($line);
  32         $newline = "";
  33         for($i = 0; $i < $linlen; $i++) {
  34             $c = $line{$i};
  35             $dec = ord($c);
  36             if ( ($dec == 32) && ($i == ($linlen - 1)) ) {
  37                 // convert space at eol only
  38                 $c = "=20";
  39             } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) {
  40                 // always encode "\t", which is *not* required
  41                 $c = $escape.strtoupper(sprintf("%02x",$dec));
  42             }
  43             if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted
  44                 $output .= $newline.$escape.$eol;
  45                 $newline = "    ";
  46             }
  47             $newline .= $c;
  48         } // end of for
  49         $output .= $newline;
  50         if ($j<count($lines)-1) $output .= $linebreak;
  51     }
  52     return trim($output);
  53 }
  54
  55 /** genere une chaine aleatoire de 22 caracteres ou moins
  56  * @param $len longueur souhaitée, 22 par défaut
  57  * @return la chaine aleatoire qui contient les caractères [A-Za-z0-9+/]
  58  */
  59 function rand_token($len = 22)
  60 {
  61     $len = max(2, $len);
  62     $len = min(50, $len);
  63     $fp = fopen('/dev/urandom', 'r');
  64     // $len * 2 is certainly an overkill,
  65     // but HEY, reading 40 bytes from /dev/urandom is not that slow !
  66     $token = fread($fp, $len * 2);
  67     fclose($fp);
  68     $token = base64_encode($token);
  69     $token = preg_replace("![Il10O+/]!", "", $token);
  70     $token = substr($token,0,$len);
  71     return $token;
  72 }
  73
  74 /** genere une chaine aleatoire convenable pour une url
  75  * @param $len longueur souhaitée, 22 par défaut
  76  * @return la chaine aleatoire
  77  */
  78 function rand_url_id($len = 22)
  79 {
  80     return rand_token($len);
  81 }
  82
  83
  84 /** genere une chaine aleatoire convenable pour un mot de passe
  85  * @return la chaine aleatoire
  86  */
  87 function rand_pass()
  88 {
  89     return rand_token(8);
  90 }
  91
  92 /** Remove accent from a string and replace them by the nearest letter
  93  */
  94 global $lc_convert, $uc_convert;
  95 $lc_convert = array('é' => 'e', 'è' => 'e', 'ë' => 'e', 'ê' => 'e',
  96     'á' => 'a', 'à' => 'a', 'ä' => 'a', 'â' => 'a', 'å' => 'a', 'ã' => 'a',
  97     'ï' => 'i', 'î' => 'i', 'ì' => 'i', 'í' => 'i',
  98     'ô' => 'o', 'ö' => 'o', 'ò' => 'o', 'ó' => 'o', 'õ' => 'o', 'ø' => 'o',
  99     'ú' => 'u', 'ù' => 'u', 'û' => 'u', 'ü' => 'u',
 100     'ç' => 'c', 'ñ' => 'n');
 101 $uc_convert = array('É' => 'E', 'È' => 'E', 'Ë' => 'E', 'Ê' => 'E',
 102     'Á' => 'A', 'À' => 'A', 'Ä' => 'A', 'Â' => 'A', 'Å' => 'A', 'Ã' => 'A',
 103     'Ï' => 'I', 'Î' => 'I', 'Ì' => 'I', 'Í' => 'I',
 104     'Ô' => 'O', 'Ö' => 'O', 'Ò' => 'O', 'Ó' => 'O', 'Õ' => 'O', 'Ø' => 'O',
 105     'Ú' => 'U', 'Ù' => 'U', 'Û' => 'U', 'Ü' => 'U',
 106     'Ç' => 'C', 'Ñ' => 'N');
 107
 108 function replace_accent($string)
 109 {
 110     global $lc_convert, $uc_convert;
 111     $string = strtr($string, $lc_convert);
 112     return strtr($string, $uc_convert);
 113 }
 114
 115 /* Un soundex en français posté par Frédéric Bouchery
 116    Voici une adaptation en PHP de la fonction soundex2 francisée de Frédéric BROUARD (http://sqlpro.developpez.com/Soundex/).
 117    C'est une bonne démonstration de la force des expressions régulières compatible Perl.
 118 trouvé sur http://expreg.com/voirsource.php?id=40&type=Chaines%20de%20caract%E8res */
 119 function soundex_fr($sIn)
 120 {
 121     static $convVIn, $convVOut, $convGuIn, $convGuOut, $accents;
 122     if (!isset($convGuIn)) {
 123         global $uc_convert, $lc_convert;
 124         $convGuIn  = array( 'GUI', 'GUE', 'GA', 'GO', 'GU', 'SCI', 'SCE', 'SC', 'CA', 'CO',
 125                             'CU', 'QU', 'Q', 'CC', 'CK', 'G', 'ST', 'PH');
 126         $convGuOut = array( 'KI', 'KE', 'KA', 'KO', 'K', 'SI', 'SE', 'SK', 'KA', 'KO',
 127                             'KU', 'K', 'K', 'K', 'K', 'J', 'T', 'F');
 128         $convVIn   = array( '/E?(AU)/', '/([EA])?[UI]([NM])([^EAIOUY]|$)/', '/[AE]O?[NM]([^AEIOUY]|$)/',
 129             '/[EA][IY]([NM]?[^NM]|$)/', '/(^|[^OEUIA])(OEU|OE|EU)([^OEUIA]|$)/', '/OI/',
 130             '/(ILLE?|I)/', '/O(U|W)/', '/O[NM]($|[^EAOUIY])/', '/(SC|S|C)H/',
 131             '/([^AEIOUY1])[^AEIOUYLKTPNR]([UAO])([^AEIOUY])/', '/([^AEIOUY]|^)([AUO])[^AEIOUYLKTP]([^AEIOUY1])/', '/^KN/',
 132             '/^PF/', '/C([^AEIOUY]|$)/',
 133             '/C/', '/Z$/', '/(?<!^)Z+/', '/ER$/', '/H/', '/W/');
 134         $convVOut  = array( 'O', '1\3', 'A\1',
 135             'E\1', '\1E\3', 'O',
 136             'Y', 'U', 'O\1', '9',
 137             '\1\2\3', '\1\2\3', 'N',
 138             'F', 'K\1',
 139             'S', 'SE', 'S', 'E', '', 'V');
 140         $accents = $uc_convert + $lc_convert;
 141         $accents['Ç'] = 'S';
 142         $accents['¿'] = 'E';
 143     }
 144     // Si il n'y a pas de mot, on sort immédiatement
 145     if ( $sIn === '' ) return '    ';
 146     // On supprime les accents
 147     $sIn = strtr( $sIn, $accents);
 148     // On met tout en minuscule
 149     $sIn = strtoupper( $sIn );
 150     // On supprime tout ce qui n'est pas une lettre
 151     $sIn = preg_replace( '`[^A-Z]`', '', $sIn );
 152     // Si la chaîne ne fait qu'un seul caractère, on sort avec.
 153     if ( strlen( $sIn ) === 1 ) return $sIn . '   ';
 154     // on remplace les consonnances primaires
 155     $sIn = str_replace( $convGuIn, $convGuOut, $sIn );
 156     // on supprime les lettres répétitives
 157     $sIn = preg_replace( '`(.)\1`', '$1', $sIn );
 158     // on réinterprète les voyelles
 159     $sIn = preg_replace( $convVIn, $convVOut, $sIn);
 160     // on supprime les terminaisons T, D, S, X (et le L qui précède si existe)
 161     $sIn = preg_replace( '`L?[TDX]S?$`', '', $sIn );
 162     // on supprime les E, A et Y qui ne sont pas en première position
 163     $sIn = preg_replace( '`(?!^)Y([^AEOU]|$)`', '\1', $sIn);
 164     $sIn = preg_replace( '`(?!^)[EA]`', '', $sIn);
 165     return substr( $sIn . '    ', 0, 4);
 166 }
 167
 168 /** Convert ip to uint (to store it in a database)
 169  */
 170 function ip_to_uint($ip)
 171 {
 172     $part = explode('.', $ip);
 173     if (count($part) != 4) {
 174         return null;
 175     }
 176     $v = 0;
 177     $fact = 0x1000000;
 178     for ($i = 0 ; $i < 4 ; ++$i) {
 179         $v += $fact * $part[$i];
 180         $fact >>= 8;
 181     }
 182     return $v;
 183 }
 184
 185 /** Convert uint to ip (to build a human understandable ip)
 186  */
 187 function uint_to_ip($uint)
 188 {
 189     return long2ip($uint);
 190 }
 191
 192 /** Converts DateTime / string / timestamp to DateTime object
 193  */
 194 function make_datetime($date)
 195 {
 196     if ($date instanceof DateTime) {
 197         return $date;
 198     } elseif (preg_match('/^\d{14}$/', $date) || preg_match('/^\d{8}$/', $date)) {
 199         return new DateTime($date);
 200     } elseif (is_int($date) || is_numeric($date)) {
 201         return new DateTime("@$date");
 202     } else {
 203         try {
 204             $d = new DateTime($date);
 205             return $d;
 206         } catch (Exception $e) {
 207             return null;
 208         }
 209     }
 210 }
 211
 212 /** Here to allow clean date formats instead of PHP's erroneous system...
 213  * Format :
 214  * %a: Mon...Sun
 215  * %A: Monday...Sunday
 216  * %d: day, two digits
 217  * %e: day, space before single digits
 218  * %j: day of year
 219  * %u: day of week (1 for monday, 7 for sunday)
 220  * %w: day of week (0 for sunday, 6 for saturday)
 221  *
 222  * //%U: week number (first week is that with the first sunday)
 223  * //%V: week number (ISO 8601-1988: first week is that with at least 4 week days)
 224  * %W: week number (first week is that with the first monday)
 225  *
 226  * %b: Jan...Dec
 227  * %B: January...December
 228  * %h: = %b
 229  * %m: month, two digits
 230  *
 231  * %C: century, two digits
 232  * %g: year, two digits (ISO 8601-1988)
 233  * %G: %g with four digits
 234  * %y: year, two digits
 235  * %Y: year, four digits
 236  *
 237  * %H: hour, two digits, 24h format
 238  * %h: hour, two digits, 12h format
 239  * %l: hour, two digits, space before single, 12h format
 240  * %M: minute, two digits
 241  * %p: AM/PM
 242  * %P: am/pm
 243  * %r: %I:%M:%S %p
 244  * %R: %H:%M
 245  * %S: second, two digits
 246  * %T: %H:%M:%S
 247  * %z: timezone (offset)
 248  * %Z: timezone (abbrev)
 249  *
 250  * %x: %e %B %Y
 251  * %X: %T
 252  * %s: unix timestamp
 253  * %%: %
 254  */
 255 function format_datetime($date, $format)
 256 {
 257     $format = str_replace(array('%X', '%x', '%R', '%r', '%T', '%%'),
 258                      array('%T', '%e %B %Y', '%H:%M', '%I:%M:%S %p', '%H:%M:%S', '%%'),
 259                      $format);
 260
 261     $date = make_datetime($date);
 262     $yy = (int) $date->format('Y');
 263 //    if ($yy > 1901 && $yy < 2038) {
 264 //        return strftime($format, $date->format('U'));
 265 //    } else {
 266         $w = (int) $date->format('w');
 267         $u = $w;
 268         if ($u == 0) {
 269             $u = 7;
 270         }
 271         $weekday = new DateTime('2010-05-' . (10 + $u));
 272         $aa = strftime('%A', $weekday->format('U'));
 273         $a = strftime('%a', $weekday->format('U'));
 274
 275         $m = $date->format('m');
 276         $monthday = new DateTime('2010-' . $m . '-01');
 277         $bb = strftime('%B', $monthday->format('U'));
 278         $b = strftime('%b', $monthday->format('U'));
 279         $y = $date->format('y');
 280
 281         $j  = $date->format('z'); // Day of year
 282         $d  = $date->format('d'); // Day of month, 2 digits
 283         $e  = $date->format('j'); // Day of month, leanding space
 284         if (strlen($e) == 1) {
 285             $e = ' ' . $e;
 286         }
 287
 288         $yy = "$yy";
 289         $cc = substr($yy, 0, 2); // Century
 290         $ww = $date->format('W'); // Week number
 291
 292         $hh = $date->format('H'); // Hour, 24h
 293         $h  = $date->format('h'); // Hour, 12h
 294         $l  = $date->format('g'); // Hour, 12h with leading space
 295         if (strlen($l) == 1) {
 296             $l = ' ' . $l;
 297         }
 298
 299         $mm = $date->format('i'); // Minutes
 300         $p  = $date->format('A'); // AM/PM
 301         $pp = $date->format('a'); // am/pm
 302         $ss = $date->format('s'); // Seconds
 303
 304         $s  = $date->format('U'); // Timestamp
 305         $zz = $date->format('T'); // Timezone abbrev
 306         $z  = $date->format('Z'); // Timezone offset
 307
 308         $txt = str_replace(
 309             array('%a', '%A', '%d', '%e', '%j', '%u', '%w',
 310                   '%W', '%b', '%B', '%h', '%m', '%C', '%y', '%Y',
 311                   '%H', '%h', '%l', '%M', '%p', '%P', '%S', '%z', '%Z',
 312                   '%%'),
 313             array($a, $aa, $d, $e, $j, $u, $w,
 314                   $ww, $b, $bb, $b, $m, $cc, $y, $yy,
 315                   $hh, $h, $l, $mm, $p, $pp, $ss, $z, $zz,
 316                   '%'),
 317             $format);
 318
 319         return $txt;
 320 //    }
 321 }
 322
 323 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 324 ?>