functions/strings.php

   1 <?php
   2
   3    $strings_php = true;
   4
   5    //*************************************************************************
   6    // Count the number of occurances of $needle are in $haystack.
   7    //*************************************************************************
   8    function countCharInString($haystack, $needle) {
   9       $len = strlen($haystack);
  10       for ($i = 0; $i < $len; $i++) {
  11          if ($haystack[$i] == $needle)
  12             $count++;
  13       }
  14       return $count;
  15    }
  16
  17    //*************************************************************************
  18    // Read from the back of $haystack until $needle is found, or the begining
  19    //    of the $haystack is reached.
  20    //*************************************************************************
  21    function readShortMailboxName($haystack, $needle) {
  22       if (substr($haystack, -1) == $needle)
  23          $haystack = substr($haystack, 0, strlen($haystack) - 1);
  24
  25       if (strrpos($haystack, $needle)) {
  26          $pos = strrpos($haystack, $needle) + 1;
  27          $data = substr($haystack, $pos, strlen($haystack));
  28       } else {
  29          $data = $haystack;
  30       }
  31       return $data;
  32    }
  33
  34    // Searches for the next position in a string minus white space
  35    function next_pos_minus_white ($haystack, $pos) {
  36       while (substr($haystack, $pos, 1) == " " ||
  37              substr($haystack, $pos, 1) == "\t" ||
  38              substr($haystack, $pos, 1) == "\n" ||
  39              substr($haystack, $pos, 1) == "\r") {
  40          if ($pos >= strlen($haystack))
  41             return -1;
  42          $pos++;
  43       }
  44       return $pos;
  45    }
  46
  47    // Wraps text at $wrap characters
  48    function wordWrap($passed, $wrap) {
  49       $passed = str_replace("&gt;", ">", $passed);
  50       $passed = str_replace("&lt;", "<", $passed);
  51
  52       $words = explode(" ", trim($passed));
  53       $i = 0;
  54       $line_len = strlen($words[$i])+1;
  55       $line = "";
  56       if (count($words) > 1) {
  57          while ($i < count($words)-1) {
  58             while ($line_len < $wrap) {
  59                $line = "$line$words[$i] ";
  60                $i++;
  61                $line_len = $line_len + strlen($words[$i])+1;
  62             }
  63             $line_len = strlen($words[$i])+1;
  64             if ($line_len < $wrap) {
  65                if ($i < count($words)) // don't <BR> the last line
  66                   $line = "$line\n";
  67             } else {
  68                $endline = $words[$i];
  69                while ($line_len >= $wrap) {
  70                   $bigline = substr($endline, 0, $wrap);
  71                   $endline = substr($endline, $wrap, strlen($endline));
  72                   $line_len = strlen($endline);
  73                   $line = "$line$bigline<BR>";
  74                }
  75                $line = "$line$endline<BR>";
  76                $i++;
  77             }
  78          }
  79       } else {
  80          $line = $words[0];
  81       }
  82
  83       $line = str_replace(">", "&gt;", $line);
  84       $line = str_replace("<", "&lt;", $line);
  85       return $line;
  86    }
  87
  88    /** Returns an array of email addresses **/
  89    function parseAddrs($text) {
  90       if (trim($text) == "") {
  91          return;
  92       }
  93       $text = str_replace(" ", "", $text);
  94       $text = ereg_replace( '"[^"]*"', "", $text);
  95       $text = str_replace(",", ";", $text);
  96       $array = explode(";", $text);
  97                 for ($i = 0; $i < count ($array); $i++) {
  98                         $array[$i] = eregi_replace ("^.*\<", "", $array[$i]);
  99                         $array[$i] = eregi_replace ("\>.*$", "", $array[$i]);
 100                 }
 101       return $array;
 102    }
 103
 104    /** Returns a line of comma separated email addresses from an array **/
 105    function getLineOfAddrs($array) {
 106       $to_line = "";
 107       for ($i = 0; $i < count($array); $i++) {
 108          if ($to_line)
 109             $to_line = "$to_line, $array[$i]";
 110          else
 111             $to_line = "$array[$i]";
 112       }
 113       return $to_line;
 114    }
 115
 116    function translateText($body, $wrap_at, $charset) {
 117       if (!isset($url_parser_php)) {
 118          include "../functions/url_parser.php";
 119       }
 120
 121       $body_ary = explode("\n", $body);
 122       for ($i=0; $i < count($body_ary); $i++) {
 123          $line = $body_ary[$i];
 124          $line = charset_decode($charset, $line);
 125
 126          $line = str_replace(" ", "&nbsp;", $line);
 127          $line = str_replace("\t", "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;", $line);
 128          $line = nl2br($line);
 129
 130          $line = parseEmail ($line);
 131          $line = parseUrl ($line);
 132
 133          $line = "^^$line"; // gotta do this because if not, strpos() returns 0
 134                             // which in PHP is the same as false.  Now it returns 2
 135          if (strpos(trim(str_replace("&nbsp;", "", $line)), "&gt;&gt;") == 2) {
 136             $line = substr($line, 2);
 137             $line = "<FONT COLOR=FF0000>$line</FONT>\n";
 138          } else if (strpos(trim(str_replace("&nbsp;", "", $line)), "&gt;") == 2) {
 139             $line = substr($line, 2);
 140             $line = "<FONT COLOR=800000>$line</FONT>\n";
 141          } else {
 142             $line = substr($line, 2);
 143          }
 144
 145          $body_ary[$i] = "<tt>$line</tt><br>";
 146       }
 147       $body = implode("\n", $body_ary);
 148
 149       return $body;
 150    }
 151
 152    /* SquirrelMail version number -- DO NOT CHANGE */
 153    $version = "0.5pre1";
 154
 155
 156    function find_mailbox_name ($mailbox) {
 157       $mailbox = trim($mailbox);
 158       if (substr($mailbox, strlen($mailbox)-1, strlen($mailbox)) == "\"") {
 159          $mailbox = substr($mailbox, 0, strlen($mailbox) - 1);
 160          $pos = strrpos ($mailbox, "\"")+1;
 161          $box = substr($mailbox, $pos);
 162       } else {
 163          $box = substr($mailbox, strrpos($mailbox, " ")+1, strlen($mailbox));
 164       }
 165       return $box;
 166    }
 167
 168    function replace_spaces ($string) {
 169       return str_replace(" ", "&nbsp;", $string);
 170    }
 171
 172    function replace_escaped_spaces ($string) {
 173       return str_replace("&nbsp;", " ", $string);
 174    }
 175
 176    function get_location () {
 177       # This determines the location to forward to relative
 178       # to your server.  If this doesnt work correctly for
 179       # you (although it should), you can remove all this
 180       # code except the last two lines, and change the header()
 181       # function to look something like this, customized to
 182       # the location of SquirrelMail on your server:
 183       #
 184       #   http://www.myhost.com/squirrelmail/src/login.php
 185
 186       global $PHP_SELF, $SERVER_NAME, $HTTPS, $HTTP_HOST;
 187
 188       // Get the path
 189       $path = substr($PHP_SELF, 0, strrpos($PHP_SELF, '/'));
 190
 191       // Check if this is a HTTPS or regular HTTP request
 192       $proto = "http://";
 193       if(isset($HTTPS) && $HTTPS == 'on' ) {
 194         $proto = "https://";
 195       }
 196
 197       // Get the hostname from the Host header or server config.
 198       // Fallback is to omit the server name and use a relative URI,
 199       // although this is not RFC 2616 compliant.
 200       if(isset($HTTP_HOST) && !empty($HTTP_HOST)) {
 201         $location = $proto . $HTTP_HOST . $path;
 202       } else if(isset($SERVER_NAME) && !empty($SERVER_NAME)) {
 203         $location = $proto . $SERVER_NAME . $path;
 204       } else {
 205         $location = $path;
 206       }
 207       return $location;
 208    }
 209 ?>