viewtext.php

   1 <?php
   2
   3   // Simple file viewer
   4   // Allows viewing of files with word wrap.
   5
   6 function mq($x) {
   7   if (get_magic_quotes_gpc()) return stripslashes($x);
   8   else return $x;
   9 }
  10
  11 $file = mq($_GET['file']);
  12 $title = mq($_GET['title']);
  13 $numbers = mq($_GET['numbers']);
  14 $search = mq($_GET['search']);
  15
  16 $file = trim($file);
  17
  18 if ($title == '') $title = $file;
  19
  20 $files = explode("\n", file_get_contents('viewtext.txt'));
  21
  22 if ($file == '') {
  23   if ($title == '') $title = "Text Viewer";
  24   foreach($files as $idx => $line) {
  25     if ($line != '') {
  26       $files[$idx] = "<li><a href=\"?file=$line\">$line</a></li>\n";
  27     }
  28   }
  29 } else {
  30
  31   if (!in_array($file, $files)) {
  32     echo "Thought you could access some random file, didn't you. Not!";
  33     return;
  34   }
  35
  36   $text = htmlspecialchars(file_get_contents($file));
  37
  38   // Do search, if requested
  39   if ($search != '') {
  40     $i = 1;
  41     // Escape special chars in the search string
  42     $search = preg_replace("=([/\\\\^$.[\\]|()?*+{}])=", '\\\\$1', $search);
  43     // Now replace instances of the search string
  44     $text = preg_replace_callback('/' . $search . '/i', "searchBody", $text);
  45     // Make the last match loop around
  46     $text = str_replace('href="#' . $i . '">', 'href="#1">', $text);
  47   }
  48
  49   // Add line numbers, if requested
  50   if ($numbers != '') {
  51     $lines = explode("\n", $text);
  52     $cnt = count($lines);
  53     $digits = strlen($cnt);
  54     $format = "%0" . $digits . 'd';
  55     $i = 1;
  56     foreach ($lines as $idx => $line) {
  57       if ($i < $cnt || $line != '') {
  58         $lines[$idx] = '<a name="line' . $i . '" href="#line' . $i . '">' .
  59           sprintf($format, $i) . '</a> ' . $line;
  60       }
  61       $i++;
  62     }
  63     $text = implode("\n", $lines);
  64   }
  65
  66   // Add line breaks
  67   $text = str_replace("\n", "<br>\n", $text);
  68
  69   // Make spaces non-breaking
  70   $text = str_replace(" ", "&nbsp;", $text);
  71
  72   // And change the non-duplicated ones back to spaces
  73   $text = preg_replace("/([^;])&nbsp;([^&])/", "$1 $2", $text);
  74
  75   // Once more to get the remaining &nbsp; after single chars
  76   $text = preg_replace("/([^;])&nbsp;([^&])/", "$1 $2", $text);
  77 }
  78
  79 function searchBody($match) {
  80   global $i;
  81   return '<a name="' . $i . '" href="#' . ++$i . '"><b>' . $match[0] . '</b></a>';
  82 }
  83
  84 ?>
  85 <html>
  86 <head>
  87 <title><? echo htmlspecialchars($title); ?></title>
  88 </head>
  89 <body>
  90 <?
  91 if ($file != '') {
  92 ?>
  93 <div style="font-family: courier">
  94 <? echo $text; ?>
  95 </div>
  96 <?
  97 } else {
  98   echo "You may view the following files:<p>\n<ul>\n";
  99   foreach ($files as $line) echo $line;
 100   echo "</ul>\n";
 101   echo '<p>Add "?search=foo" to search for foo' . "\n";
 102   echo '<br>Add "?numbers=yes" to add line numbers' . "\n";
 103  }
 104 ?>
 105 </body>
 106 </html>
 107
 108 <?
 109
 110 // Copyright 2008 Bill St. Clair
 111 //
 112 // Licensed under the Apache License, Version 2.0 (the "License");
 113 // you may not use this file except in compliance with the License.
 114 // You may obtain a copy of the License at
 115 //
 116 //     http://www.apache.org/licenses/LICENSE-2.0
 117 //
 118 // Unless required by applicable law or agreed to in writing, software
 119 // distributed under the License is distributed on an "AS IS" BASIS,
 120 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 121 // See the License for the specific language governing permissions
 122 // and limitations under the License.
 123
 124 ?>