XOOPS 2.5.6  Final
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Font.php
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1 <?php
2 
7 {
8 
17  protected $info = array();
18 
19  public function __construct($config) {
20  $def = $config->getCSSDefinition();
21  $this->info['font-style'] = $def->info['font-style'];
22  $this->info['font-variant'] = $def->info['font-variant'];
23  $this->info['font-weight'] = $def->info['font-weight'];
24  $this->info['font-size'] = $def->info['font-size'];
25  $this->info['line-height'] = $def->info['line-height'];
26  $this->info['font-family'] = $def->info['font-family'];
27  }
28 
29  public function validate($string, $config, $context) {
30 
31  static $system_fonts = array(
32  'caption' => true,
33  'icon' => true,
34  'menu' => true,
35  'message-box' => true,
36  'small-caption' => true,
37  'status-bar' => true
38  );
39 
40  // regular pre-processing
41  $string = $this->parseCDATA($string);
42  if ($string === '') return false;
43 
44  // check if it's one of the keywords
45  $lowercase_string = strtolower($string);
46  if (isset($system_fonts[$lowercase_string])) {
47  return $lowercase_string;
48  }
49 
50  $bits = explode(' ', $string); // bits to process
51  $stage = 0; // this indicates what we're looking for
52  $caught = array(); // which stage 0 properties have we caught?
53  $stage_1 = array('font-style', 'font-variant', 'font-weight');
54  $final = ''; // output
55 
56  for ($i = 0, $size = count($bits); $i < $size; $i++) {
57  if ($bits[$i] === '') continue;
58  switch ($stage) {
59 
60  // attempting to catch font-style, font-variant or font-weight
61  case 0:
62  foreach ($stage_1 as $validator_name) {
63  if (isset($caught[$validator_name])) continue;
64  $r = $this->info[$validator_name]->validate(
65  $bits[$i], $config, $context);
66  if ($r !== false) {
67  $final .= $r . ' ';
68  $caught[$validator_name] = true;
69  break;
70  }
71  }
72  // all three caught, continue on
73  if (count($caught) >= 3) $stage = 1;
74  if ($r !== false) break;
75 
76  // attempting to catch font-size and perhaps line-height
77  case 1:
78  $found_slash = false;
79  if (strpos($bits[$i], '/') !== false) {
80  list($font_size, $line_height) =
81  explode('/', $bits[$i]);
82  if ($line_height === '') {
83  // ooh, there's a space after the slash!
84  $line_height = false;
85  $found_slash = true;
86  }
87  } else {
88  $font_size = $bits[$i];
89  $line_height = false;
90  }
91  $r = $this->info['font-size']->validate(
92  $font_size, $config, $context);
93  if ($r !== false) {
94  $final .= $r;
95  // attempt to catch line-height
96  if ($line_height === false) {
97  // we need to scroll forward
98  for ($j = $i + 1; $j < $size; $j++) {
99  if ($bits[$j] === '') continue;
100  if ($bits[$j] === '/') {
101  if ($found_slash) {
102  return false;
103  } else {
104  $found_slash = true;
105  continue;
106  }
107  }
108  $line_height = $bits[$j];
109  break;
110  }
111  } else {
112  // slash already found
113  $found_slash = true;
114  $j = $i;
115  }
116  if ($found_slash) {
117  $i = $j;
118  $r = $this->info['line-height']->validate(
119  $line_height, $config, $context);
120  if ($r !== false) {
121  $final .= '/' . $r;
122  }
123  }
124  $final .= ' ';
125  $stage = 2;
126  break;
127  }
128  return false;
129 
130  // attempting to catch font-family
131  case 2:
132  $font_family =
133  implode(' ', array_slice($bits, $i, $size - $i));
134  $r = $this->info['font-family']->validate(
135  $font_family, $config, $context);
136  if ($r !== false) {
137  $final .= $r . ' ';
138  // processing completed successfully
139  return rtrim($final);
140  }
141  return false;
142  }
143  }
144  return false;
145  }
146 
147 }
148 
149 // vim: et sw=4 sts=4