pt.php

AJAX Book Reader is a complete AJAX client-server application that may be used with a Web browser to

<?php
#
# pt.php (c) 2006 Michael Thompson [e-mail]
# for the latest info visit http://michaelthompson.org/doc/
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#

if( isset($book) ) 
{ 
  $base=$_SERVER["PHP_SELF"];
  @include(".pt-config");
  if( !isset($skip) ) $skip = 0;
  if( !isset($shelf) ) $shelf=".";
  if( !isset($chapterMarker) ) $chapterMarker="c";
  if( !isset($extBook) ) $extBook=".txt";
  if( !isset($extIndex) ) $extIndex=".lis";
  if( !isset($chapter) ) $chapter=0;
  if( !isset($page) ) $page=0;
  if( !isset($lpp) ) $lpp=24;
  if( !isset($noprevSymbol) ) $noprevSymbol="_x_";
  if( !isset($prevSymbol) ) $prevSymbol="&lt;=";
  if( !isset($nextSymbol) ) $nextSymbol="=&gt;";
  if( !isset($firstSymbol) ) $firstSymbol="1";
  if( !isset($lastSymbol) ) $lastSymbol="N";
  setcookie("bookMark-$book","$chapter|$page",
     time()+3600*24*180,"/","." .  $_SERVER["HTTP_HOST"]);

  if( isset($x) ) 
  {
    $dex = "$shelf/$book$extIndex";
    if( is_file($dex) && ($fh=@fopen($dex,"r")) ) 
    { 
      # return list of chapters
      $buff = "";
      $n = 0;
      while( !feof($fh) )
      {
        $line=trim(fgets($fh));
        if( strlen($line)<1 ) continue;
        if( strlen($title)<1 ) 
        { $title = $line;
          continue;
        }
        if( strlen($author)<1 ) 
        { $author = $line;
          continue;
        }
        if( $n==$chapter ) 
        { $line = "$prefixCurrentChapter$line$suffixCurrentChapter";
        }

        $buff .= <<<END
$prefixChapter<a href="#" 
onClick="fillPage('$base','$book','$n','0','chaps');"
>$line</a>$suffixChapter
END;
        $n++;
      }
      fclose($fh);
      $fh = null;
      $buff = "$title|$author|" . $buff;
      echo substr("$buff",$skip);
    }
  }
  elseif( isset($y) ) 
  {
    $pLnk = "$noprevSymbol";
    $next_page = $page + 1;
    $prev_chapter = $next_chapter = $chapter;
    if( $page=="last" ) 
    {
      $tex = "$shelf/$book$chapterMarker$chapter$extBook";
      if( ($fh=@fopen($tex,"r")) ) 
      { $n = 0;
        while( !feof($fh) ) 
        { fgets($fh);
          $n++;
        }
        $page = ceil($n/$lpp);
        fclose($fh);
      }
      $next_page = 0;
      $next_chapter = $chapter + 1;
    }
    if( ($prev_page=$page-1)<0 ) 
    { $prev_page = "last";
      $prev_chapter = $chapter - 1;
    }
    $tex = "$shelf/$book$chapterMarker$next_chapter$extBook";
    if( !is_file($tex) ) 
    {
      $next_chapter = $chapter;
      $next_page = "last";
    }

    $prev_div = (($prev_chapter==$chapter)?"navbar":"chaps");
    $next_div = (($next_chapter==$chapter)?"navbar":"chaps");
    if( $prev_chapter>=0 ) $pLnk = <<<END
<a href="#" 
onClick="fillPage('$base','$book','$prev_chapter','$prev_page','$prev_div');"
>$prevSymbol</a>
END;
  
    $nLnk=<<<END
<a href="#" 
onClick="fillPage('$base','$book','$next_chapter','$next_page','$next_div');"
>$nextSymbol</a>
END;

    $fLnk=<<<END
<a href="#" 
onClick="fillPage('$base','$book','$chapter','0','navbar');"
>$firstSymbol</a>
END;

    $lLnk=<<<END
<a href="#" 
onClick="fillPage('$base','$book','$chapter','last','navbar');"
>$lastSymbol</a>
END;

    $buff = str_replace("_PLNK_","$pLnk",$navBar);
    $buff = str_replace("_NLNK_","$nLnk",$buff);
    $buff = str_replace("_1LNK_","$fLnk",$buff);
    $buff = str_replace("_LLNK_","$lLnk",$buff);
    echo substr("$buff",$skip);
  }
  else
  {
    $thePage = "";
    $lines = 0;
    $uchap = $chapter;
    do
    {
      $tex = "$shelf/$book$chapterMarker$uchap$extBook";
      if( !is_file($tex) || !($fh=@fopen($tex,"r")) ) break;
      if( $uchap!=$chapter ) 
      { $thePage="__NEXT__";
        break;
      }
       
      # skip ahead to my page?
      $onPage=0;
      if( $page>0 || $page=="last" ) 
      { 
        $n=0;
        $ar = array();
        while( !feof($fh) ) 
        { 
          $ar[]= $prefixLine . trim(fgets($fh)) . $suffixLine;
          if( count($ar)>$lpp ) array_shift($ar);
          $n++;
          if( $n>=$lpp ) 
          { $n = 0;
            $onPage++;
            if( $page==$onPage ) break;
          }
        }
        $lastPage = implode($ar);
        if( $page=="last" ) break;
      }

      $n=0;
      while( !feof($fh) ) 
      { 
        $buff = trim(fgets($fh));
        $lines += strlen($buff);
        $thePage .= $prefixLine . $buff . $suffixLine;
        $n++;
        if( $n>=$lpp ) break;
      }
      $uchap++;
    } while( $lines==0 );
    if( $fh ) fclose($fh);

    if( strlen($thePage)<1 ) $thePage = $lastPage;
    if( $thePage!="__NEXT__" ) $thePage = $prefixPage . $thePage . $suffixPage;

    $buff = $thePage;
    echo substr("$buff",$skip);
  }
}

?>