Total Complexity | 89 |
Total Lines | 445 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like Input often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Input, and based on these observations, apply Extract Interface, too.
1 | <?php |
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18 | class Input |
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19 | { |
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20 | |||
21 | /** |
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22 | * @var Definition |
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23 | */ |
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24 | protected $definition; |
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25 | |||
26 | /** |
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27 | * @var Option[] |
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28 | */ |
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29 | protected $options = []; |
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30 | |||
31 | /** |
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32 | * @var Argument[] |
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33 | */ |
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34 | protected $arguments = []; |
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35 | |||
36 | protected $interactive = true; |
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37 | |||
38 | private $tokens; |
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39 | private $parsed; |
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40 | |||
41 | public function __construct($argv = null) |
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42 | { |
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43 | if (null === $argv) { |
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44 | $argv = $_SERVER['argv']; |
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45 | // 去除命令名 |
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46 | array_shift($argv); |
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47 | } |
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48 | |||
49 | $this->tokens = $argv; |
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50 | |||
51 | $this->definition = new Definition(); |
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52 | } |
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53 | |||
54 | protected function setTokens(array $tokens) |
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55 | { |
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56 | $this->tokens = $tokens; |
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57 | } |
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58 | |||
59 | /** |
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60 | * 绑定实例 |
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61 | * @param Definition $definition A InputDefinition instance |
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62 | */ |
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63 | public function bind(Definition $definition) |
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64 | { |
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65 | $this->arguments = []; |
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66 | $this->options = []; |
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67 | $this->definition = $definition; |
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68 | |||
69 | $this->parse(); |
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70 | } |
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71 | |||
72 | /** |
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73 | * 解析参数 |
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74 | */ |
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75 | protected function parse() |
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76 | { |
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77 | $parseOptions = true; |
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78 | $this->parsed = $this->tokens; |
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79 | while (null !== $token = array_shift($this->parsed)) { |
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80 | if ($parseOptions && '' == $token) { |
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81 | $this->parseArgument($token); |
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82 | } elseif ($parseOptions && '--' == $token) { |
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83 | $parseOptions = false; |
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84 | } elseif ($parseOptions && 0 === strpos($token, '--')) { |
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85 | $this->parseLongOption($token); |
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86 | } elseif ($parseOptions && '-' === $token[0] && '-' !== $token) { |
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87 | $this->parseShortOption($token); |
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88 | } else { |
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89 | $this->parseArgument($token); |
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90 | } |
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91 | } |
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92 | } |
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93 | |||
94 | /** |
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95 | * 解析短选项 |
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96 | * @param string $token 当前的指令. |
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97 | */ |
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98 | private function parseShortOption($token) |
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99 | { |
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100 | $name = substr($token, 1); |
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101 | |||
102 | if (strlen($name) > 1) { |
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103 | if ($this->definition->hasShortcut($name[0]) |
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104 | && $this->definition->getOptionForShortcut($name[0])->acceptValue() |
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105 | ) { |
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106 | $this->addShortOption($name[0], substr($name, 1)); |
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107 | } else { |
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108 | $this->parseShortOptionSet($name); |
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109 | } |
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110 | } else { |
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111 | $this->addShortOption($name, null); |
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112 | } |
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113 | } |
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114 | |||
115 | /** |
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116 | * 解析短选项 |
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117 | * @param string $name 当前指令 |
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118 | * @throws \RuntimeException |
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119 | */ |
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120 | private function parseShortOptionSet($name) |
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121 | { |
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122 | $len = strlen($name); |
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123 | for ($i = 0; $i < $len; ++$i) { |
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124 | if (!$this->definition->hasShortcut($name[$i])) { |
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125 | throw new \RuntimeException(sprintf('The "-%s" option does not exist.', $name[$i])); |
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126 | } |
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127 | |||
128 | $option = $this->definition->getOptionForShortcut($name[$i]); |
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129 | if ($option->acceptValue()) { |
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130 | $this->addLongOption($option->getName(), $i === $len - 1 ? null : substr($name, $i + 1)); |
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131 | |||
132 | break; |
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133 | } else { |
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134 | $this->addLongOption($option->getName(), null); |
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135 | } |
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136 | } |
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137 | } |
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138 | |||
139 | /** |
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140 | * 解析完整选项 |
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141 | * @param string $token 当前指令 |
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142 | */ |
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143 | private function parseLongOption($token) |
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144 | { |
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145 | $name = substr($token, 2); |
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146 | |||
147 | if (false !== $pos = strpos($name, '=')) { |
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148 | $this->addLongOption(substr($name, 0, $pos), substr($name, $pos + 1)); |
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149 | } else { |
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150 | $this->addLongOption($name, null); |
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151 | } |
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152 | } |
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153 | |||
154 | /** |
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155 | * 解析参数 |
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156 | * @param string $token 当前指令 |
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157 | * @throws \RuntimeException |
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158 | */ |
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159 | private function parseArgument($token) |
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160 | { |
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161 | $c = count($this->arguments); |
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162 | |||
163 | if ($this->definition->hasArgument($c)) { |
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164 | $arg = $this->definition->getArgument($c); |
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165 | |||
166 | $this->arguments[$arg->getName()] = $arg->isArray() ? [$token] : $token; |
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167 | |||
168 | } elseif ($this->definition->hasArgument($c - 1) && $this->definition->getArgument($c - 1)->isArray()) { |
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169 | $arg = $this->definition->getArgument($c - 1); |
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170 | |||
171 | $this->arguments[$arg->getName()][] = $token; |
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172 | } else { |
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173 | throw new \RuntimeException('Too many arguments.'); |
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174 | } |
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175 | } |
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176 | |||
177 | /** |
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178 | * 添加一个短选项的值 |
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179 | * @param string $shortcut 短名称 |
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180 | * @param mixed $value 值 |
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181 | * @throws \RuntimeException |
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182 | */ |
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183 | private function addShortOption($shortcut, $value) |
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184 | { |
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185 | if (!$this->definition->hasShortcut($shortcut)) { |
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186 | throw new \RuntimeException(sprintf('The "-%s" option does not exist.', $shortcut)); |
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187 | } |
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188 | |||
189 | $this->addLongOption($this->definition->getOptionForShortcut($shortcut)->getName(), $value); |
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190 | } |
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191 | |||
192 | /** |
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193 | * 添加一个完整选项的值 |
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194 | * @param string $name 选项名 |
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195 | * @param mixed $value 值 |
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196 | * @throws \RuntimeException |
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197 | */ |
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198 | private function addLongOption($name, $value) |
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199 | { |
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200 | if (!$this->definition->hasOption($name)) { |
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201 | throw new \RuntimeException(sprintf('The "--%s" option does not exist.', $name)); |
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202 | } |
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203 | |||
204 | $option = $this->definition->getOption($name); |
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205 | |||
206 | if (false === $value) { |
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207 | $value = null; |
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208 | } |
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209 | |||
210 | if (null !== $value && !$option->acceptValue()) { |
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211 | throw new \RuntimeException(sprintf('The "--%s" option does not accept a value.', $name, $value)); |
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212 | } |
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213 | |||
214 | if (null === $value && $option->acceptValue() && count($this->parsed)) { |
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215 | $next = array_shift($this->parsed); |
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216 | if (isset($next[0]) && '-' !== $next[0]) { |
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217 | $value = $next; |
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218 | } elseif (empty($next)) { |
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219 | $value = ''; |
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220 | } else { |
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221 | array_unshift($this->parsed, $next); |
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222 | } |
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223 | } |
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224 | |||
225 | if (null === $value) { |
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226 | if ($option->isValueRequired()) { |
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227 | throw new \RuntimeException(sprintf('The "--%s" option requires a value.', $name)); |
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228 | } |
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229 | |||
230 | if (!$option->isArray()) { |
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231 | $value = $option->isValueOptional() ? $option->getDefault() : true; |
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232 | } |
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233 | } |
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234 | |||
235 | if ($option->isArray()) { |
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236 | $this->options[$name][] = $value; |
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237 | } else { |
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238 | $this->options[$name] = $value; |
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239 | } |
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240 | } |
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241 | |||
242 | /** |
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243 | * 获取第一个参数 |
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244 | * @return string|null |
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245 | */ |
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246 | public function getFirstArgument() |
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247 | { |
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248 | foreach ($this->tokens as $token) { |
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249 | if ($token && '-' === $token[0]) { |
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250 | continue; |
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251 | } |
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252 | |||
253 | return $token; |
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254 | } |
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255 | return; |
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256 | } |
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257 | |||
258 | /** |
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259 | * 检查原始参数是否包含某个值 |
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260 | * @param string|array $values 需要检查的值 |
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261 | * @return bool |
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262 | */ |
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263 | public function hasParameterOption($values) |
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276 | } |
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277 | |||
278 | /** |
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279 | * 获取原始选项的值 |
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280 | * @param string|array $values 需要检查的值 |
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281 | * @param mixed $default 默认值 |
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282 | * @return mixed The option value |
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283 | */ |
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284 | public function getParameterOption($values, $default = false) |
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285 | { |
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286 | $values = (array) $values; |
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287 | $tokens = $this->tokens; |
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288 | |||
289 | while (0 < count($tokens)) { |
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290 | $token = array_shift($tokens); |
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291 | |||
292 | foreach ($values as $value) { |
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293 | if ($token === $value || 0 === strpos($token, $value . '=')) { |
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294 | if (false !== $pos = strpos($token, '=')) { |
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295 | return substr($token, $pos + 1); |
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296 | } |
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297 | |||
298 | return array_shift($tokens); |
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299 | } |
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300 | } |
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301 | } |
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302 | |||
303 | return $default; |
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304 | } |
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305 | |||
306 | /** |
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307 | * 验证输入 |
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308 | * @throws \RuntimeException |
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309 | */ |
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310 | public function validate() |
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311 | { |
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312 | if (count($this->arguments) < $this->definition->getArgumentRequiredCount()) { |
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313 | throw new \RuntimeException('Not enough arguments.'); |
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314 | } |
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315 | } |
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316 | |||
317 | /** |
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318 | * 检查输入是否是交互的 |
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319 | * @return bool |
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320 | */ |
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321 | public function isInteractive() |
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322 | { |
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323 | return $this->interactive; |
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324 | } |
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325 | |||
326 | /** |
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327 | * 设置输入的交互 |
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328 | * @param bool |
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329 | */ |
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330 | public function setInteractive($interactive) |
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331 | { |
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332 | $this->interactive = (bool) $interactive; |
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333 | } |
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334 | |||
335 | /** |
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336 | * 获取所有的参数 |
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337 | * @return Argument[] |
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338 | */ |
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339 | public function getArguments() |
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340 | { |
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341 | return array_merge($this->definition->getArgumentDefaults(), $this->arguments); |
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342 | } |
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343 | |||
344 | /** |
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345 | * 根据名称获取参数 |
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346 | * @param string $name 参数名 |
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347 | * @return mixed |
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348 | * @throws \InvalidArgumentException |
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349 | */ |
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350 | public function getArgument($name) |
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351 | { |
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352 | if (!$this->definition->hasArgument($name)) { |
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353 | throw new \InvalidArgumentException(sprintf('The "%s" argument does not exist.', $name)); |
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354 | } |
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355 | |||
356 | return isset($this->arguments[$name]) ? $this->arguments[$name] : $this->definition->getArgument($name) |
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357 | ->getDefault(); |
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358 | } |
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359 | |||
360 | /** |
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361 | * 设置参数的值 |
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362 | * @param string $name 参数名 |
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363 | * @param string $value 值 |
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364 | * @throws \InvalidArgumentException |
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365 | */ |
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366 | public function setArgument($name, $value) |
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367 | { |
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368 | if (!$this->definition->hasArgument($name)) { |
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369 | throw new \InvalidArgumentException(sprintf('The "%s" argument does not exist.', $name)); |
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370 | } |
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371 | |||
372 | $this->arguments[$name] = $value; |
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373 | } |
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374 | |||
375 | /** |
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376 | * 检查是否存在某个参数 |
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377 | * @param string|int $name 参数名或位置 |
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378 | * @return bool |
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379 | */ |
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380 | public function hasArgument($name) |
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381 | { |
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382 | return $this->definition->hasArgument($name); |
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383 | } |
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384 | |||
385 | /** |
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386 | * 获取所有的选项 |
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387 | * @return Option[] |
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388 | */ |
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389 | public function getOptions() |
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392 | } |
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393 | |||
394 | /** |
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395 | * 获取选项值 |
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396 | * @param string $name 选项名称 |
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397 | * @return mixed |
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398 | * @throws \InvalidArgumentException |
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399 | */ |
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400 | public function getOption($name) |
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401 | { |
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402 | if (!$this->definition->hasOption($name)) { |
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403 | throw new \InvalidArgumentException(sprintf('The "%s" option does not exist.', $name)); |
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404 | } |
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405 | |||
406 | return isset($this->options[$name]) ? $this->options[$name] : $this->definition->getOption($name)->getDefault(); |
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407 | } |
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408 | |||
409 | /** |
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410 | * 设置选项值 |
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411 | * @param string $name 选项名 |
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412 | * @param string|bool $value 值 |
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413 | * @throws \InvalidArgumentException |
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414 | */ |
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415 | public function setOption($name, $value) |
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422 | } |
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423 | |||
424 | /** |
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425 | * 是否有某个选项 |
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426 | * @param string $name 选项名 |
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427 | * @return bool |
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428 | */ |
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429 | public function hasOption($name) |
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430 | { |
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431 | return $this->definition->hasOption($name) && isset($this->options[$name]); |
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432 | } |
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433 | |||
434 | /** |
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435 | * 转义指令 |
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436 | * @param string $token |
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437 | * @return string |
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438 | */ |
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439 | public function escapeToken($token) |
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440 | { |
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441 | return preg_match('{^[\w-]+$}', $token) ? $token : escapeshellarg($token); |
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442 | } |
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443 | |||
444 | /** |
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445 | * 返回传递给命令的参数的字符串 |
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446 | * @return string |
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447 | */ |
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448 | public function __toString() |
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463 | } |
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464 | } |
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465 |