1 <?php

     2 

     3 /**

     4  * Utility functions

     5  * 

     6  * Web control interface script for Amarok

     7  * Written by Dan Fuhry - 2008

     8  *

     9  * This script is in the public domain. Use it for good, not evil.

    10  */

    11 

    12 /**

    13  * Utility/reporting functions

    14  */

    15  

    16 /**

    17  * Report a fatal error and exit

    18  * @param string Error message

    19  */

    20 

    21 function burnout($msg)

    22 {

    23   echo "\x1B[31;1m[WebControl] fatal: \x1B[37;1m";

    24   echo "$msg\x1B[0m\n";

    25   exit(1);

    26 }

    27 

    28 /**

    29  * Print a stylized status message, compatible with Linux consoles

    30  * @param string Status message

    31  */

    32 

    33 function status($msg)

    34 {

    35   echo "\x1B[32;1m[WebControl] \x1B[32;0m$msg\x1B[0m\n";

    36 }

    37 

    38 /**

    39  * Performs an action with DCOP.

    40  * @param string DCOP component, e.g. player, playlist, playlistbrowser, ...

    41  * @param string Action to perform, e.g. stop, play, ...

    42  * @param string additional parameters... (NOT IMPLEMENTED)

    43  * @return mixed output of DCOP command

    44  */

    45 

    46 function dcop_action($component, $action)

    47 {

    48   $tmpfile = tempnam('amaweb', '');

    49   if ( !$tmpfile )

    50     burnout('tempnam() failed us');

    51   system("dcop amarok $component $action > $tmpfile");

    52   $output = @file_get_contents($tmpfile);

    53   @unlink($tmpfile);

    54   $output = trim($output);

    55   

    56   // detect type of output

    57   if ( $output == 'true' )

    58     return true;

    59   else if ( $output == 'false' )

    60     return false;

    61   else if ( preg_match('/^-?[0-9]+/', $output) )

    62     return intval($output);

    63   else

    64     return $output;

    65 }

    66 

    67 /**

    68  * Rebuilds the copy of the playlist in RAM

    69  */

    70 

    71 function rebuild_playlist()

    72 {

    73   // import what we need

    74   global $homedir, $playlist;

    75   // sync and load the playlist file

    76   $playlist_file = dcop_action('playlist', 'saveCurrentPlaylist');

    77   // start XML parser

    78   try

    79   {

    80     $xml = simplexml_load_file($playlist_file);

    81   }

    82   catch ( Exception $e )

    83   {

    84     burnout("Caught exception trying to load playlist file:\n$e");

    85   }

    86   $attribs = $xml->attributes();

    87   if ( @$attribs['product'] != 'Amarok' )

    88   {

    89     burnout('Playlist is not in Amarok format');

    90   }

    91   $playlist = array();

    92   foreach ( $xml->children() as $child )

    93   {

    94     $attribs = $child->attributes();

    95     $item = array(

    96         'uri'    => $attribs['uri'],

    97         'title'  => strval($child->Title),

    98         'artist' => strval($child->Artist),

    99         'album'  => strval($child->Album),

   100         'length' => seconds_to_str(intval($child->Length))

   101       );

   102     $playlist[] = $item;

   103   }

   104 }

   105 

   106 /**

   107  * Converts a number to minute:second format

   108  * @param int Seconds

   109  * @return string format: mm:ss

   110  */

   111 

   112 function seconds_to_str($secs)

   113 {

   114   $seconds = $secs % 60;

   115   $minutes = ( $secs - $seconds ) / 60;

   116   $seconds = strval($seconds);

   117   $minutes = strval($minutes);

   118   if ( strlen($seconds) < 2 )

   119     $seconds = "0$seconds";

   120   if ( strlen($minutes) < 2 )

   121     $minutes = "0$minutes";

   122   return "$minutes:$seconds";

   123 }

   124