1 <?php |
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2 /** |
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3 * Smarty Internal Plugin CompileBase |
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4 * |
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5 * @package Smarty |
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6 * @subpackage Compiler |
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7 * @author Uwe Tews |
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8 */ |
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9 |
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10 /** |
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11 * This class does extend all internal compile plugins |
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12 * |
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13 * @package Smarty |
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14 * @subpackage Compiler |
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15 */ |
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16 abstract class Smarty_Internal_CompileBase { |
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17 /** |
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18 * Array of names of required attribute required by tag |
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19 * |
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20 * @var array |
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21 */ |
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22 public $required_attributes = array(); |
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23 /** |
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24 * Array of names of optional attribute required by tag |
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25 * use array('_any') if there is no restriction of attributes names |
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26 * |
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27 * @var array |
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28 */ |
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29 public $optional_attributes = array(); |
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30 /** |
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31 * Shorttag attribute order defined by its names |
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32 * |
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33 * @var array |
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34 */ |
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35 public $shorttag_order = array(); |
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36 /** |
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37 * Array of names of valid option flags |
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38 * |
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39 * @var array |
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40 */ |
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41 public $option_flags = array('nocache'); |
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42 |
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43 /** |
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44 * This function checks if the attributes passed are valid |
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45 * The attributes passed for the tag to compile are checked against the list of required and |
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46 * optional attributes. Required attributes must be present. Optional attributes are check against |
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47 * the corresponding list. The keyword '_any' specifies that any attribute will be accepted |
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48 * as valid |
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49 * |
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50 * @param object $compiler compiler object |
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51 * @param array $attributes attributes applied to the tag |
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52 * |
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53 * @return array of mapped attributes for further processing |
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54 */ |
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55 public function getAttributes($compiler, $attributes) { |
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56 $_indexed_attr = array(); |
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57 // loop over attributes |
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58 foreach ($attributes as $key => $mixed) { |
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59 // shorthand ? |
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60 if (!is_array($mixed)) { |
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61 // option flag ? |
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62 if (in_array(trim($mixed, '\'"'), $this->option_flags)) { |
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63 $_indexed_attr[trim($mixed, '\'"')] = true; |
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64 // shorthand attribute ? |
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65 } elseif (isset($this->shorttag_order[$key])) { |
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66 $_indexed_attr[$this->shorttag_order[$key]] = $mixed; |
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67 } else { |
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68 // too many shorthands |
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69 $compiler->trigger_template_error('too many shorthand attributes', $compiler->lex->taglineno); |
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70 } |
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71 // named attribute |
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72 } else { |
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73 $kv = each($mixed); |
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74 // option flag? |
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75 if (in_array($kv['key'], $this->option_flags)) { |
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76 if (is_bool($kv['value'])) { |
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77 $_indexed_attr[$kv['key']] = $kv['value']; |
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78 } elseif (is_string($kv['value']) && in_array(trim($kv['value'], '\'"'), array('true', 'false'))) { |
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79 if (trim($kv['value']) == 'true') { |
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80 $_indexed_attr[$kv['key']] = true; |
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81 } else { |
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82 $_indexed_attr[$kv['key']] = false; |
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83 } |
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84 } elseif (is_numeric($kv['value']) && in_array($kv['value'], array(0, 1))) { |
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85 if ($kv['value'] == 1) { |
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86 $_indexed_attr[$kv['key']] = true; |
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87 } else { |
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88 $_indexed_attr[$kv['key']] = false; |
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89 } |
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90 } else { |
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91 $compiler->trigger_template_error("illegal value of option flag \"{$kv['key']}\"", $compiler->lex->taglineno); |
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92 } |
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93 // must be named attribute |
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94 } else { |
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95 reset($mixed); |
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96 $_indexed_attr[key($mixed)] = $mixed[key($mixed)]; |
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97 } |
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98 } |
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99 } |
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100 // check if all required attributes present |
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101 foreach ($this->required_attributes as $attr) { |
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102 if (!array_key_exists($attr, $_indexed_attr)) { |
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103 $compiler->trigger_template_error("missing \"" . $attr . "\" attribute", $compiler->lex->taglineno); |
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104 } |
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105 } |
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106 // check for not allowed attributes |
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107 if ($this->optional_attributes != array('_any')) { |
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108 $tmp_array = array_merge($this->required_attributes, $this->optional_attributes, $this->option_flags); |
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109 foreach ($_indexed_attr as $key => $dummy) { |
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110 if (!in_array($key, $tmp_array) && $key !== 0) { |
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111 $compiler->trigger_template_error("unexpected \"" . $key . "\" attribute", $compiler->lex->taglineno); |
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112 } |
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113 } |
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114 } |
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115 // default 'false' for all option flags not set |
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116 foreach ($this->option_flags as $flag) { |
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117 if (!isset($_indexed_attr[$flag])) { |
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118 $_indexed_attr[$flag] = false; |
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119 } |
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120 } |
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121 |
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122 return $_indexed_attr; |
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123 } |
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124 |
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125 /** |
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126 * Push opening tag name on stack |
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127 * Optionally additional data can be saved on stack |
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128 * |
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129 * @param object $compiler compiler object |
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130 * @param string $openTag the opening tag's name |
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131 * @param mixed $data optional data saved |
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132 */ |
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133 public function openTag($compiler, $openTag, $data = null) { |
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134 array_push($compiler->_tag_stack, array($openTag, $data)); |
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135 } |
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136 |
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137 /** |
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138 * Pop closing tag |
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139 * Raise an error if this stack-top doesn't match with expected opening tags |
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140 * |
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141 * @param object $compiler compiler object |
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142 * @param array|string $expectedTag the expected opening tag names |
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143 * |
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144 * @return mixed any type the opening tag's name or saved data |
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145 */ |
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146 public function closeTag($compiler, $expectedTag) { |
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147 if (count($compiler->_tag_stack) > 0) { |
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148 // get stacked info |
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149 list($_openTag, $_data) = array_pop($compiler->_tag_stack); |
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150 // open tag must match with the expected ones |
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151 if (in_array($_openTag, (array)$expectedTag)) { |
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152 if (is_null($_data)) { |
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153 // return opening tag |
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154 return $_openTag; |
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155 } else { |
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156 // return restored data |
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157 return $_data; |
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158 } |
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159 } |
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160 // wrong nesting of tags |
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161 $compiler->trigger_template_error("unclosed {$compiler->smarty->left_delimiter}" . $_openTag . "{$compiler->smarty->right_delimiter} tag"); |
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162 |
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163 return; |
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164 } |
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165 // wrong nesting of tags |
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166 $compiler->trigger_template_error("unexpected closing tag", $compiler->lex->taglineno); |
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167 |
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168 return; |
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169 } |
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170 } |
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