X-Git-Url: http://git.polytechnique.org/?a=blobdiff_plain;f=include%2Fmisc.inc.php;h=b60045ded495424c0400f9936bf28111572f68d2;hb=e92ecb8c24421ca1dd4f87ad7478d0d8277e1f60;hp=c1b8c6711d8ea60fbd757e7463af56c693db54c7;hpb=ef815e754cee390b7503d848cf753f0cef328d6b;p=platal.git

diff --git a/include/misc.inc.php b/include/misc.inc.php
index c1b8c67..b60045d 100644
--- a/include/misc.inc.php
+++ b/include/misc.inc.php
@@ -1,6 +1,6 @@
 <?php
 /***************************************************************************
- *  Copyright (C) 2003-2010 Polytechnique.org                              *
+ *  Copyright (C) 2003-2011 Polytechnique.org                              *
  *  http://opensource.polytechnique.org/                                   *
  *                                                                         *
  *  This program is free software; you can redistribute it and/or modify   *
@@ -19,37 +19,40 @@
  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  ***************************************************************************/
 
-function quoted_printable_encode($input, $line_max = 76)
-{
-    $lines = preg_split("/(?:\r\n|\r|\n)/", $input);
-    $eol = "\n";
-    $linebreak = "=0D=0A=\n    ";
-    $escape = "=";
-    $output = "";
+// Use native function if it's available (>= PHP5.3)
+if (!function_exists('quoted_printable_encode')) {
+    function quoted_printable_encode($input, $line_max = 76)
+    {
+        $lines = preg_split("/(?:\r\n|\r|\n)/", $input);
+        $eol = "\n";
+        $linebreak = "=0D=0A=\n    ";
+        $escape = "=";
+        $output = "";
 
-    foreach ($lines as $j => $line) {
-        $linlen = strlen($line);
-        $newline = "";
-        for($i = 0; $i < $linlen; $i++) {
-            $c = $line{$i};
-            $dec = ord($c);
-            if ( ($dec == 32) && ($i == ($linlen - 1)) ) {
-                // convert space at eol only
-                $c = "=20";
-            } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) {
-                // always encode "\t", which is *not* required
-                $c = $escape.strtoupper(sprintf("%02x",$dec));
-            }
-            if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted
-                $output .= $newline.$escape.$eol;
-                $newline = "    ";
-            }
-            $newline .= $c;
-        } // end of for
-        $output .= $newline;
-        if ($j<count($lines)-1) $output .= $linebreak;
+        foreach ($lines as $j => $line) {
+            $linlen = strlen($line);
+            $newline = "";
+            for($i = 0; $i < $linlen; $i++) {
+                $c = $line{$i};
+                $dec = ord($c);
+                if ( ($dec == 32) && ($i == ($linlen - 1)) ) {
+                    // convert space at eol only
+                    $c = "=20";
+                } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) {
+                    // always encode "\t", which is *not* required
+                    $c = $escape.strtoupper(sprintf("%02x",$dec));
+                }
+                if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted
+                    $output .= $newline.$escape.$eol;
+                    $newline = "    ";
+                }
+                $newline .= $c;
+            } // end of for
+            $output .= $newline;
+            if ($j<count($lines)-1) $output .= $linebreak;
+        }
+        return trim($output);
     }
-    return trim($output);
 }
 
 /** genere une chaine aleatoire de 22 caracteres ou moins
@@ -201,7 +204,18 @@ function make_datetime($date)
         return new DateTime("@$date");
     } else {
         try {
+            $list = explode('/', $date);
+            if (count($list) == 3) {
+                $date = $list[1] . '/' . $list[0] . '/' . $list[2];
+            }
+            // FIXME: On PHP < 5.3, parsing error are reported using an error,
+            //        not an exception. Thus count the number of error to detect
+            //        errors.
+            $errors = @count($GLOBALS['pl_errors']);
             $d = new DateTime($date);
+            if (@count($GLOBALS['pl_errors']) > $errors) {
+                return null;
+            }
             return $d;
         } catch (Exception $e) {
             return null;
@@ -320,5 +334,69 @@ function format_datetime($date, $format)
 //    }
 }
 
+/** Get the first n characters of the string
+ */
+function left($string, $count)
+{
+    return substr($string, 0, $count);
+}
+
+/** Get the last n characters of the string
+ */
+function right($string, $count)
+{
+    return substr($string, -$count);
+}
+
+/** Check if a string is a prefix for another one.
+ */
+function starts_with($string, $prefix, $caseSensitive = true)
+{
+    $prefixLen = strlen($prefix);
+    if (strlen($string) < $prefixLen) {
+        return false;
+    }
+    $part = left($string, $prefixLen);
+    if ($caseSensitive) {
+        return strcmp($prefix, $part) === 0;
+    } else {
+        return strcasecmp($prefix, $part) === 0;
+    }
+}
+
+/** Check if a string is a suffix for another one.
+ */
+function ends_with($string, $suffix, $caseSensitive = true)
+{
+    $suffixLen = strlen($suffix);
+    if (strlen($string) < $suffixLen) {
+        return false;
+    }
+    $part = right($string, $suffixLen);
+    if ($caseSensitive) {
+        return strcmp($suffix, $part) === 0;
+    } else {
+        return strcasecmp($suffix, $part) === 0;
+    }
+}
+
+/** Check if the input data can be seen as an integer.
+ */
+function can_convert_to_integer($data)
+{
+    return is_int($data) || ctype_digit($data);
+}
+
+/** Interpret the input data as an integer or return false.
+ */
+function to_integer($data)
+{
+    if (!can_convert_to_integer($data)) {
+        return false;
+    }
+    return intval($data);
+}
+
+
 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 ?>