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1 | <?php |
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2 | namespace Redaxscript\Head; |
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3 | |||
4 | use Redaxscript\Singleton; |
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5 | use function array_map; |
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6 | use function array_unshift; |
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7 | use function is_array; |
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8 | use function strlen; |
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9 | use function trim; |
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10 | use function ucfirst; |
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11 | |||
12 | /** |
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13 | * abstract class to create a head class |
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14 | * |
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15 | * @since 3.0.0 |
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16 | * |
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17 | * @package Redaxscript |
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18 | * @category Head |
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19 | * @author Henry Ruhs |
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20 | */ |
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21 | |||
22 | abstract class HeadAbstract extends Singleton implements HeadInterface |
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23 | { |
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24 | /** |
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25 | * collection namespace |
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26 | * |
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27 | * @var string |
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28 | */ |
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29 | |||
30 | protected static $_namespace = 'Redaxscript\Head'; |
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31 | |||
32 | /** |
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33 | * collection of the head |
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34 | * |
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35 | * @var array |
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36 | */ |
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37 | |||
38 | protected static $_collectionArray = []; |
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39 | |||
40 | /** |
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41 | * stringify the collection |
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42 | * |
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43 | * @since 3.0.0 |
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44 | * |
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45 | * @return string |
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46 | */ |
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47 | |||
48 | 25 | public function __toString() : string |
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49 | { |
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50 | 25 | $render = $this->render(); |
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51 | 25 | if ($render) |
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52 | { |
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53 | 16 | return $render; |
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54 | } |
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55 | 9 | return '<!-- ' . self::$_namespace . ' -->'; |
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56 | } |
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57 | |||
58 | /** |
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59 | * init the class |
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60 | * |
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61 | * @param string $namespace collection sub namespace |
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62 | * |
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63 | * @since 3.0.0 |
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64 | * |
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65 | * @return self |
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66 | */ |
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67 | |||
68 | 26 | public function init(string $namespace = null) : self |
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69 | { |
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70 | 26 | self::$_namespace = static::class; |
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71 | 26 | if ($namespace) |
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72 | { |
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73 | 26 | self::$_namespace .= '\\' . ucfirst($namespace); |
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74 | } |
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75 | 26 | return $this; |
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76 | } |
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77 | |||
78 | /** |
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79 | * append to the collection |
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80 | * |
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81 | * @since 3.0.0 |
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82 | * |
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83 | * @param string|array $attribute key or array of attributes |
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84 | * @param string $value value of the attribute |
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85 | * |
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86 | * @return self |
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87 | */ |
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88 | |||
89 | 8 | public function append($attribute = null, string $value = null) : self |
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90 | { |
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91 | 8 | $collectionArray = $this->_getCollectionArray(); |
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92 | 8 | if (is_array($attribute)) |
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93 | { |
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94 | 8 | $collectionArray[] = array_map('trim', $attribute); |
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95 | } |
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96 | 1 | else if (strlen($attribute) && strlen($value)) |
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97 | { |
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98 | 1 | $collectionArray[] = |
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99 | [ |
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100 | 1 | trim($attribute) => trim($value) |
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101 | ]; |
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102 | } |
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103 | 8 | $this->_setCollectionArray($collectionArray); |
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104 | 8 | return $this; |
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105 | } |
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106 | |||
107 | /** |
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108 | * prepend to the collection |
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109 | * |
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110 | * @since 3.0.0 |
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111 | * |
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112 | * @param string|array $attribute key or array of attributes |
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113 | * @param string $value value of the attribute |
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114 | * |
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115 | * @return self |
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116 | */ |
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117 | |||
118 | 4 | public function prepend($attribute = null, string $value = null) : self |
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119 | { |
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120 | 4 | $collectionArray = $this->_getCollectionArray(); |
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121 | 4 | if (is_array($attribute)) |
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122 | { |
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123 | 4 | array_unshift($collectionArray, array_map('trim', $attribute)); |
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124 | } |
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125 | 1 | else if (strlen($attribute) && strlen($value)) |
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126 | { |
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127 | 1 | array_unshift($collectionArray, |
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128 | [ |
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129 | 1 | trim($attribute) => trim($value) |
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130 | ]); |
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131 | } |
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132 | 4 | $this->_setCollectionArray($collectionArray); |
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133 | 4 | return $this; |
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134 | } |
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135 | |||
136 | /** |
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137 | * remove from to the collection |
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138 | * |
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139 | * @since 3.0.0 |
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140 | * |
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141 | * @param string $attribute name of attribute |
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142 | * @param string $value value of the attribute |
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143 | * |
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144 | * @return self |
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145 | */ |
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146 | |||
147 | 2 | public function remove(string $attribute = null, string $value = null) : self |
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148 | { |
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149 | 2 | $collectionArray = $this->_getCollectionArray(); |
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150 | 2 | if (is_array($collectionArray)) |
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151 | { |
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152 | 2 | foreach ($collectionArray as $collectionKey => $collectionValue) |
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153 | { |
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154 | 2 | if ($collectionValue[$attribute] === $value) |
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155 | { |
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156 | 2 | unset($collectionArray[$collectionKey]); |
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157 | } |
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158 | } |
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159 | 2 | $this->_setCollectionArray($collectionArray); |
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160 | } |
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161 | 2 | return $this; |
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162 | } |
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163 | |||
164 | /** |
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165 | * clear the collection |
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166 | * |
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167 | * @since 3.0.0 |
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168 | * |
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169 | * @return self |
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170 | */ |
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171 | |||
172 | 25 | public function clear() : self |
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173 | { |
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174 | 25 | $this->_setCollectionArray(); |
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175 | 25 | return $this; |
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176 | } |
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177 | |||
178 | /** |
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179 | * get the collection array |
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180 | * |
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181 | * @since 3.0.0 |
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182 | * |
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183 | * @return array |
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184 | */ |
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185 | |||
186 | 25 | protected function _getCollectionArray() : array |
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187 | { |
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188 | 25 | $collectionArray = self::$_collectionArray[self::$_namespace]; |
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189 | 25 | return is_array($collectionArray) ? $collectionArray : []; |
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190 | } |
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191 | |||
192 | /** |
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193 | * set the collection array |
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194 | * |
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195 | * @since 3.0.0 |
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196 | * |
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197 | * @param array $collectionArray |
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198 | */ |
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199 | |||
200 | 25 | protected function _setCollectionArray(array $collectionArray = []) : void |
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201 | { |
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202 | 25 | self::$_collectionArray[self::$_namespace] = $collectionArray; |
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203 | 25 | } |
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204 | } |
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205 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: