aboutsummaryrefslogtreecommitdiffstats
path: root/include/functions.inc.php
blob: ccfc5fa889e41253634c5a4092463ba1c810eb35 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
<?php
// +-----------------------------------------------------------------------+
// |                           functions.inc.php                           |
// +-----------------------------------------------------------------------+
// | application   : PhpWebGallery 1.3 <http://phpwebgallery.net>          |
// | author        : Pierrick LE GALL <pierrick@z0rglub.com>               |
// +-----------------------------------------------------------------------+
// | file          : $RCSfile$
// | tag           : $Name$
// | last update   : $Date$
// | revision      : $Revision$
// +-----------------------------------------------------------------------+
// | 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;                                         |
// +-----------------------------------------------------------------------+

include( PREFIX_INCLUDE.'./include/functions_user.inc.php' );
include( PREFIX_INCLUDE.'./include/functions_session.inc.php' );
include( PREFIX_INCLUDE.'./include/functions_category.inc.php' );
include( PREFIX_INCLUDE.'./include/functions_xml.inc.php' );
include( PREFIX_INCLUDE.'./include/functions_group.inc.php' );

//----------------------------------------------------------- generic functions

// get_enums returns an array containing the possible values of a enum field
// in a table of the database.
/**
 * possible values of an "enum" field
 *
 * get_enums returns an array containing the possible values of a enum field
 * in a table of the database.
 *
 * @param string table in the database
 * @param string field name in this table
 * @uses str_replace
 */
function get_enums( $table, $field )
{
  // retrieving the properties of the table. Each line represents a field :
  // columns are 'Field', 'Type'
  $result=mysql_query("desc $table");
  while ( $row = mysql_fetch_array( $result ) ) 
  {
    // we are only interested in the the field given in parameter for the
    // function
    if ( $row['Field']==$field )
    {
      // retrieving possible values of the enum field
      // enum('blue','green','black')
      $option = explode( ',', substr($row['Type'], 5, -1 ) );
      for ( $i = 0; $i < sizeof( $option ); $i++ )
      {
        // deletion of quotation marks
        $option[$i] = str_replace( "'", '',$option[$i] );
      }                 
    }
  }
  mysql_free_result( $result );
  return $option;
}

// get_boolean transforms a string to a boolean value. If the string is
// "false" (case insensitive), then the boolean value false is returned. In
// any other case, true is returned.
function get_boolean( $string )
{
  $boolean = true;
  if ( preg_match( '/^false$/i', $string ) )
  {
    $boolean = false;
  }
  return $boolean;
}

// array_remove removes a value from the given array if the value existed in
// this array.
function array_remove( $array, $value )
{
  $output = array();
  foreach ( $array as $v ) {
    if ( $v != $value ) array_push( $output, $v );
  }
  return $output;
}

// The function get_moment returns a float value coresponding to the number
// of seconds since the unix epoch (1st January 1970) and the microseconds
// are precised : e.g. 1052343429.89276600
function get_moment()
{
  $t1 = explode( ' ', microtime() );
  $t2 = explode( '.', $t1[0] );
  $t2 = $t1[1].'.'.$t2[1];
  return $t2;
}

// The function get_elapsed_time returns the number of seconds (with 3
// decimals precision) between the start time and the end time given.
function get_elapsed_time( $start, $end )
{
  return number_format( $end - $start, 3, '.', ' ').' s';
}

// - The replace_space function replaces space and '-' characters
//   by their HTML equivalent  &nbsb; and &minus;
// - The function does not replace characters in HTML tags
// - This function was created because IE5 does not respect the
//   CSS "white-space: nowrap;" property unless space and minus
//   characters are replaced like this function does.
// - Example :
//                 <div class="foo">My friend</div>
//               ( 01234567891111111111222222222233 )
//               (           0123456789012345678901 )
// becomes :
//             <div class="foo">My&nbsp;friend</div>
function replace_space( $string )
{
  //return $string;
  $return_string = '';
  // $remaining is the rest of the string where to replace spaces characters
  $remaining = $string;
  // $start represents the position of the next '<' character
  // $end   represents the position of the next '>' character
  $start = 0;
  $end = 0;
  $start = strpos ( $remaining, '<' ); // -> 0
  $end   = strpos ( $remaining, '>' ); // -> 16
  // as long as a '<' and his friend '>' are found, we loop
  while ( is_numeric( $start ) and is_numeric( $end ) )
  {
    // $treatment is the part of the string to treat
    // In the first loop of our example, this variable is empty, but in the
    // second loop, it equals 'My friend'
    $treatment = substr ( $remaining, 0, $start );
    // Replacement of ' ' by his equivalent '&nbsp;'
    $treatment = str_replace( ' ', '&nbsp;', $treatment );
    $treatment = str_replace( '-', '&minus;', $treatment );
    // composing the string to return by adding the treated string and the
    // following HTML tag -> 'My&nbsp;friend</div>'
    $return_string.= $treatment.substr( $remaining, $start, $end-$start+1 );
    // the remaining string is deplaced to the part after the '>' of this
    // loop
    $remaining = substr ( $remaining, $end + 1, strlen( $remaining ) );
    $start = strpos ( $remaining, '<' );
    $end   = strpos ( $remaining, '>' );
  }
  $treatment = str_replace( ' ', '&nbsp;', $remaining );
  $treatment = str_replace( '-', '&minus;', $treatment );
  $return_string.= $treatment;

  return $return_string;
}

// get_extension returns the part of the string after the last "."
function get_extension( $filename )
{
  return substr( strrchr( $filename, '.' ), 1, strlen ( $filename ) );
}

// get_filename_wo_extension returns the part of the string before the last
// ".".
// get_filename_wo_extension( 'test.tar.gz' ) -> 'test.tar'
function get_filename_wo_extension( $filename )
{
  return substr( $filename, 0, strrpos( $filename, '.' ) );
}

// get_dirs retourne un tableau contenant tous les sous-r�pertoires d'un
// r�pertoire
function get_dirs( $rep )
{
  $sub_rep = array();

  if ( $opendir = opendir ( $rep ) )
  {
    while ( $file = readdir ( $opendir ) )
    {
      if ( $file != '.' and $file != '..' and is_dir ( $rep.$file ) )
      {
        array_push( $sub_rep, $file );
      }
    }
  }
  return $sub_rep;
}

// The get_picture_size function return an array containing :
//      - $picture_size[0] : final width
//      - $picture_size[1] : final height
// The final dimensions are calculated thanks to the original dimensions and
// the maximum dimensions given in parameters.  get_picture_size respects
// the width/height ratio
function get_picture_size( $original_width, $original_height,
                           $max_width, $max_height )
{
  $width = $original_width;
  $height = $original_height;
  $is_original_size = true;
                
  if ( $max_width != "" )
  {
    if ( $original_width > $max_width )
    {
      $width = $max_width;
      $height = floor( ( $width * $original_height ) / $original_width );
    }
  }
  if ( $max_height != "" )
  {
    if ( $original_height > $max_height )
    {
      $height = $max_height;
      $width = floor( ( $height * $original_width ) / $original_height );
      $is_original_size = false;
    }
  }
  if ( is_numeric( $max_width ) and is_numeric( $max_height )
       and $max_width != 0 and $max_height != 0 )
  {
    $ratioWidth = $original_width / $max_width;
    $ratioHeight = $original_height / $max_height;
    if ( ( $ratioWidth > 1 ) or ( $ratioHeight > 1 ) )
    {
      if ( $ratioWidth < $ratioHeight )
      { 
        $width = floor( $original_width / $ratioHeight );
        $height = $max_height;
      }
      else
      { 
        $width = $max_width; 
        $height = floor( $original_height / $ratioWidth );
      }
      $is_original_size = false;
    }
  }
  $picture_size = array();
  $picture_size[0] = $width;
  $picture_size[1] = $height;
  return $picture_size;
}
//-------------------------------------------- PhpWebGallery specific functions

// get_languages retourne un tableau contenant tous les languages
// disponibles pour PhpWebGallery
function get_languages( $rep_language )
{
  $languages = array();
  $i = 0;
  if ( $opendir = opendir ( $rep_language ) )
  {
    while ( $file = readdir ( $opendir ) )
    {
      if ( is_file ( $rep_language.$file )
           and $file != "index.php"
           and strrchr ( $file, "." ) == ".php" )
      {
        $languages[$i++] =
          substr ( $file, 0, strlen ( $file )
                   - strlen ( strrchr ( $file, "." ) ) );
      }
    }
  }
  return $languages;
}

// get_themes retourne un tableau contenant tous les "template - couleur"
function get_themes( $theme_dir )
{
  $themes = array();
  $main_themes = get_dirs( $theme_dir );
  for ( $i = 0; $i < sizeof( $main_themes ); $i++ )
  {
    $colors = get_dirs( $theme_dir.$main_themes[$i].'/' );
    for ( $j = 0; $j < sizeof( $colors ); $j++ )
    {
      array_push( $themes, $main_themes[$i].' - '.$colors[$j] );
    }
  }
  return $themes;
}

// - add_style replaces the 
//         $search  into <span style="$style">$search</span>
// in the given $string.
// - The function does not replace characters in HTML tags
function add_style( $string, $search, $style )
{
  //return $string;
  $return_string = '';
  $remaining = $string;

  $start = 0;
  $end = 0;
  $start = strpos ( $remaining, '<' );
  $end   = strpos ( $remaining, '>' );
  while ( is_numeric( $start ) and is_numeric( $end ) )
  {
    $treatment = substr ( $remaining, 0, $start );
    $treatment = str_replace( $search, '<span style="'.$style.'">'.
                              $search.'</span>', $treatment );
    $return_string.= $treatment.substr( $remaining, $start, $end-$start+1 );
    $remaining = substr ( $remaining, $end + 1, strlen( $remaining ) );
    $start = strpos ( $remaining, '<' );
    $end   = strpos ( $remaining, '>' );
  }
  $treatment = str_replace( $search, '<span style="'.$style.'">'.
                            $search.'</span>', $remaining );
  $return_string.= $treatment;
                
  return $return_string;
}

// replace_search replaces a searched words array string by the search in
// another style for the given $string.
function replace_search( $string, $search )
{
  $words = explode( ',', $search );
  $style = 'background-color:white;color:red;';
  foreach ( $words as $word ) {
    $string = add_style( $string, $word, $style );
  }
  return $string;
}

function database_connection()
{
  include( PREFIX_INCLUDE.'./include/mysql.inc.php' );
  define( "PREFIX_TABLE", $prefixeTable );

  @mysql_connect( $cfgHote, $cfgUser, $cfgPassword )
    or die ( "Could not connect to server" );
  @mysql_select_db( $cfgBase )
    or die ( "Could not connect to database" );
}

function pwg_log( $file, $category, $picture = '' )
{
  global $conf, $user;

  if ( $conf['log'] )
  {
    $query = 'insert into '.PREFIX_TABLE.'history';
    $query.= ' (date,login,IP,file,category,picture) values';
    $query.= " (".time().", '".$user['username']."'";
    $query.= ",'".$_SERVER['REMOTE_ADDR']."'";
    $query.= ",'".$file."','".$category."','".$picture."');";
    mysql_query( $query );
  }
}

function templatize_array( $array, $global_array_name, $handle )
{
  global $vtp, $lang, $page, $user, $conf;

  foreach ( $array as $value ) {
    $vtp->setGlobalVar( $handle, $value, ${$global_array_name}[$value] );
  }
}

// format_date returns a formatted date for display. The date given in
// argument can be a unixdate (number of seconds since the 01.01.1970) or an
// american format (2003-09-15). By option, you can show the time. The
// output is internationalized.
//
// format_date( "2003-09-15", 'us', true ) -> "Monday 15 September 2003 21:52"
function format_date( $date, $type = 'us', $show_time = false )
{
  global $lang;

  switch ( $type )
  {
  case 'us' :
    list( $year,$month,$day ) = explode( '-', $date );
    $unixdate = mktime(0,0,0,$month,$day,$year);
    break;
  case 'unix' :
    $unixdate = $date;
    break;
  }
  $formated_date = $lang['day'][date( "w", $unixdate )];
  $formated_date.= date( " j ", $unixdate );
  $formated_date.= $lang['month'][date( "n", $unixdate )];
  $formated_date.= date( ' Y', $unixdate );
  if ( $show_time )
  {
    $formated_date.= date( ' G:i', $unixdate );
  }

  return $formated_date;
}

// notify sends a email to every admin of the gallery
function notify( $type, $infos = '' )
{
  global $conf;

  $headers = 'From: '.$conf['webmaster'].' <'.$conf['mail_webmaster'].'>'."\n";
  $headers.= 'Reply-To: '.$conf['mail_webmaster']."\n";
  $headers.= 'X-Mailer: PhpWebGallery, PHP '.phpversion();

  $options = '-f '.$conf['mail_webmaster'];
  // retrieving all administrators
  $query = 'SELECT username,mail_address,language';
  $query.= ' FROM '.PREFIX_TABLE.'users';
  $query.= " WHERE status = 'admin'";
  $query.= ' AND mail_address IS NOT NULL';
  $query.= ';';
  $result = mysql_query( $query );
  while ( $row = mysql_fetch_array( $result ) )
  {
    $to = $row['mail_address'];
    include( PREFIX_INCLUDE.'./language/'.$row['language'].'.php' );
    $content = $lang['mail_hello']."\n\n";
    switch ( $type )
    {
    case 'upload' :
      $subject = $lang['mail_new_upload_subject'];
      $content.= $lang['mail_new_upload_content'];
      break;
    case 'comment' :
      $subject = $lang['mail_new_comment_subject'];
      $content.= $lang['mail_new_comment_content'];
      break;
    }
    $infos = str_replace( '&nbsp;',  ' ', $infos );
    $infos = str_replace( '&minus;', '-', $infos );
    $content.= "\n\n".$infos;
    $content.= "\n\n-- \nPhpWebGallery ".$conf['version'];
    $content = wordwrap( $content, 72 );
    @mail( $to, $subject, $content, $headers, $options );
  }
}
?>