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| 1 | <?php |
| 2 | /** |
| 3 | * When replacements are made in-situ in the vendor directory, add aliases for the original class fqdns so |
| 4 | * dev dependencies can still be used. |
| 5 | * |
| 6 | * We could make the replacements in the dev dependencies but it is preferable not to edit files unnecessarily. |
| 7 | * Composer would warn of changes before updating (although it should probably do that already). |
| 8 | * This approach allows symlinked dev dependencies to be used. |
| 9 | * It also should work without knowing anything about the dev dependencies |
| 10 | * |
| 11 | * @package brianhenryie/strauss |
| 12 | */ |
| 13 | |
| 14 | namespace BrianHenryIE\Strauss\Pipeline\Aliases; |
| 15 | |
| 16 | use BrianHenryIE\Strauss\Config\AliasesConfigInterface; |
| 17 | use BrianHenryIE\Strauss\Helpers\FileSystem; |
| 18 | use BrianHenryIE\Strauss\Types\AutoloadAliasInterface; |
| 19 | use BrianHenryIE\Strauss\Types\ConstantSymbol; |
| 20 | use BrianHenryIE\Strauss\Types\DiscoveredSymbols; |
| 21 | use BrianHenryIE\Strauss\Types\FunctionSymbol; |
| 22 | use League\Flysystem\FilesystemException; |
| 23 | use Psr\Log\LoggerAwareTrait; |
| 24 | use Psr\Log\LoggerInterface; |
| 25 | use RuntimeException; |
| 26 | |
| 27 | /** |
| 28 | * @phpstan-import-type ClassAliasArray from AutoloadAliasInterface |
| 29 | * @phpstan-import-type InterfaceAliasArray from AutoloadAliasInterface |
| 30 | * @phpstan-import-type TraitAliasArray from AutoloadAliasInterface |
| 31 | */ |
| 32 | class Aliases |
| 33 | { |
| 34 | use LoggerAwareTrait; |
| 35 | |
| 36 | protected AliasesConfigInterface $config; |
| 37 | |
| 38 | protected FileSystem $fileSystem; |
| 39 | |
| 40 | public function __construct( |
| 41 | AliasesConfigInterface $config, |
| 42 | FileSystem $fileSystem, |
| 43 | LoggerInterface $logger |
| 44 | ) { |
| 45 | $this->config = $config; |
| 46 | $this->fileSystem = $fileSystem; |
| 47 | $this->setLogger($logger); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * @param array<string, ClassAliasArray|InterfaceAliasArray|TraitAliasArray> $aliasesArray |
| 52 | * @param string|null $autoloadAliasesFunctionsString |
| 53 | * @return string |
| 54 | * @throws RuntimeException |
| 55 | */ |
| 56 | protected function getTemplate(array $aliasesArray, ?string $autoloadAliasesFunctionsString): string |
| 57 | { |
| 58 | $namespace = $this->config->getNamespacePrefix(); |
| 59 | $autoloadAliases = var_export($aliasesArray, true); |
| 60 | |
| 61 | $globalFunctionsString = !$autoloadAliasesFunctionsString ? '' |
| 62 | : <<<GLOBAL |
| 63 | // Functions and constants |
| 64 | $autoloadAliasesFunctionsString |
| 65 | GLOBAL; |
| 66 | |
| 67 | $template = file_get_contents(__DIR__ . '/autoload_aliases.template.php'); |
| 68 | |
| 69 | if ($template === false) { |
| 70 | throw new RuntimeException('Expected file not found at: ' . __DIR__ . '/autoload_aliases.template.php'); |
| 71 | } |
| 72 | |
| 73 | $template = str_replace( |
| 74 | '// FunctionsAndConstants', |
| 75 | $globalFunctionsString, |
| 76 | $template |
| 77 | ); |
| 78 | |
| 79 | $template = str_replace( |
| 80 | 'namespace BrianHenryIE\Strauss {', |
| 81 | 'namespace ' . trim($namespace, '\\') . ' {', |
| 82 | $template |
| 83 | ); |
| 84 | |
| 85 | return str_replace( |
| 86 | 'private array $autoloadAliases = [];', |
| 87 | "private array \$autoloadAliases = $autoloadAliases;", |
| 88 | $template |
| 89 | ); |
| 90 | } |
| 91 | |
| 92 | public function writeAliasesFileForSymbols(DiscoveredSymbols $symbols): void |
| 93 | { |
| 94 | // $modifiedSymbols = $this->getModifiedSymbols($symbols); |
| 95 | |
| 96 | $outputFilepath = $this->getAliasFilepath(); |
| 97 | |
| 98 | $fileString = $this->buildStringOfAliases($symbols, basename($outputFilepath)); |
| 99 | |
| 100 | $this->fileSystem->write($outputFilepath, $fileString); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * We will create `vendor/composer/autoload_aliases.php` alongside other autoload files, e.g. `autoload_real.php`. |
| 105 | */ |
| 106 | protected function getAliasFilepath(): string |
| 107 | { |
| 108 | return sprintf( |
| 109 | '%scomposer/autoload_aliases.php', |
| 110 | $this->config->getVendorDirectory() |
| 111 | ); |
| 112 | } |
| 113 | |
| 114 | protected function getModifiedSymbols(DiscoveredSymbols $symbols): DiscoveredSymbols |
| 115 | { |
| 116 | $modifiedSymbols = new DiscoveredSymbols(); |
| 117 | foreach ($symbols->getAll() as $symbol) { |
| 118 | if ($symbol->getOriginalSymbol() !== $symbol->getReplacement()) { |
| 119 | $modifiedSymbols->add($symbol); |
| 120 | } |
| 121 | if ($symbol instanceof FunctionSymbol) { |
| 122 | $functionNamespace = $symbols->getNamespaceSymbolByString($symbol->getNamespace()); |
| 123 | $isFunctionHasChangedNamespace = $functionNamespace->isChangedNamespace(); |
| 124 | |
| 125 | if ($isFunctionHasChangedNamespace || $symbol->getOriginalSymbol() !== $symbol->getReplacement() |
| 126 | ) { |
| 127 | $modifiedSymbols->add($symbol); |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | return $modifiedSymbols; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * @param array<string,string> $classmap FQDN classname : absolute file path. |
| 136 | */ |
| 137 | protected function registerAutoloader(array $classmap): void |
| 138 | { |
| 139 | |
| 140 | // Need to autoload the classes for reflection to work (this is maybe just an issue during tests). |
| 141 | spl_autoload_register(function (string $class) use ($classmap) { |
| 142 | if (isset($classmap[$class])) { |
| 143 | $this->logger->debug("Autoloading $class from {$classmap[$class]}"); |
| 144 | try { |
| 145 | include_once $classmap[$class]; |
| 146 | } catch (\Throwable $e) { |
| 147 | if (false !== strpos($e->getMessage(), 'PHPUnit')) { |
| 148 | $this->logger->warning("Error autoloading $class from {$classmap[$class]}: " . $e->getMessage()); |
| 149 | } else { |
| 150 | $this->logger->error("Error autoloading $class from {$classmap[$class]}: " . $e->getMessage()); |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | }); |
| 155 | } |
| 156 | |
| 157 | protected function buildStringOfAliases(DiscoveredSymbols $modifiedSymbols, string $outputFilename): string |
| 158 | { |
| 159 | // TODO: When target !== vendor, there should be a test here to ensure the target autoloader is included, with instructions to add it. |
| 160 | |
| 161 | $autoloadAliasesFunctionsString = $this->getFunctionAliasesString($modifiedSymbols); |
| 162 | |
| 163 | $aliasesArray = $this->getAliasesArray($modifiedSymbols); |
| 164 | |
| 165 | $autoloadAliasesFileString = $this->getTemplate($aliasesArray, $autoloadAliasesFunctionsString); |
| 166 | |
| 167 | return $autoloadAliasesFileString; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * @return array<string, ClassAliasArray|InterfaceAliasArray|TraitAliasArray> |
| 172 | * @throws FilesystemException |
| 173 | */ |
| 174 | protected function getAliasesArray(DiscoveredSymbols $symbols): array |
| 175 | { |
| 176 | $result = []; |
| 177 | |
| 178 | foreach ($symbols->getAll() as $originalSymbolFqdn => $symbol) { |
| 179 | if ($symbol->getOriginalSymbol() === $symbol->getReplacement()) { |
| 180 | continue; |
| 181 | } |
| 182 | if (!($symbol instanceof AutoloadAliasInterface)) { |
| 183 | continue; |
| 184 | } |
| 185 | $result[$originalSymbolFqdn] = $symbol->getAutoloadAliasArray(); |
| 186 | } |
| 187 | |
| 188 | return $result; |
| 189 | } |
| 190 | |
| 191 | protected function getFunctionAliasesString(DiscoveredSymbols $discoveredSymbols): string |
| 192 | { |
| 193 | $modifiedSymbols = $discoveredSymbols->getSymbols(); |
| 194 | |
| 195 | $autoloadAliasesFileString = ''; |
| 196 | |
| 197 | $symbolsByNamespace = ['\\' => []]; |
| 198 | foreach ($modifiedSymbols as $symbol) { |
| 199 | if ($symbol instanceof FunctionSymbol) { |
| 200 | if (!isset($symbolsByNamespace[$symbol->getNamespace()])) { |
| 201 | $symbolsByNamespace[$symbol->getNamespace()] = []; |
| 202 | } |
| 203 | $symbolsByNamespace[$symbol->getNamespace()][] = $symbol; |
| 204 | } |
| 205 | /** |
| 206 | * "define() will define constants exactly as specified. So, if you want to define a constant in a |
| 207 | * namespace, you will need to specify the namespace in your call to define(), even if you're calling |
| 208 | * define() from within a namespace." |
| 209 | * @see https://www.php.net/manual/en/function.define.php |
| 210 | */ |
| 211 | if ($symbol instanceof ConstantSymbol) { |
| 212 | $symbolsByNamespace['\\'][] = $symbol; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | if (!empty($symbolsByNamespace['\\'])) { |
| 217 | $globalAliasesPhpString = 'namespace {' . PHP_EOL; |
| 218 | |
| 219 | /** @var FunctionSymbol | ConstantSymbol $symbol */ |
| 220 | foreach ($symbolsByNamespace['\\'] as $symbol) { |
| 221 | $aliasesPhpString = ''; |
| 222 | |
| 223 | $originalLocalSymbol = $symbol->getOriginalSymbol(); |
| 224 | $replacementSymbol = $symbol->getReplacement(); |
| 225 | |
| 226 | if ($originalLocalSymbol === $replacementSymbol) { |
| 227 | continue; |
| 228 | } |
| 229 | |
| 230 | switch (get_class($symbol)) { |
| 231 | case FunctionSymbol::class: |
| 232 | // TODO: Do we need to check for `void`? Or will it just be ignored? |
| 233 | // Is it possible to inherit PHPDoc from the original function? |
| 234 | $aliasesPhpString = $this->aliasedFunctionTemplate($originalLocalSymbol, $replacementSymbol); |
| 235 | break; |
| 236 | case ConstantSymbol::class: |
| 237 | /** |
| 238 | * https://stackoverflow.com/questions/19740621/namespace-constants-and-use-as |
| 239 | */ |
| 240 | // Ideally this would somehow be loaded after everything else. |
| 241 | // Maybe some Patchwork style redefining of `define()` to add the alias? |
| 242 | // Does it matter since all references to use the constant should have been updated to the new name anyway. |
| 243 | // TODO: global `const`. |
| 244 | $aliasesPhpString = <<<EOD |
| 245 | if(!defined('$originalLocalSymbol') && defined('$replacementSymbol')) { |
| 246 | define('$originalLocalSymbol', $replacementSymbol); |
| 247 | } |
| 248 | EOD; |
| 249 | break; |
| 250 | default: |
| 251 | /** |
| 252 | * Should be addressed above. |
| 253 | * |
| 254 | * @see self::appendAliasString()) |
| 255 | */ |
| 256 | break; |
| 257 | } |
| 258 | |
| 259 | $globalAliasesPhpString .= $aliasesPhpString; |
| 260 | } |
| 261 | |
| 262 | $globalAliasesPhpString .= PHP_EOL . '}' . PHP_EOL; // Close global namespace. |
| 263 | |
| 264 | $autoloadAliasesFileString = $autoloadAliasesFileString . PHP_EOL . $globalAliasesPhpString; |
| 265 | } |
| 266 | |
| 267 | unset($symbolsByNamespace['\\']); |
| 268 | foreach ($symbolsByNamespace as $namespaceSymbol => $symbols) { |
| 269 | $aliasesPhpString = "namespace $namespaceSymbol {" . PHP_EOL; |
| 270 | |
| 271 | foreach ($symbols as $symbol) { |
| 272 | $originalLocalSymbol = $symbol->getOriginalLocalName(); |
| 273 | |
| 274 | $namespaceSymbol = $discoveredSymbols->getNamespaceSymbolByString($symbol->getNamespace()); |
| 275 | |
| 276 | if (!($symbol instanceof FunctionSymbol |
| 277 | && |
| 278 | $namespaceSymbol->isChangedNamespace()) |
| 279 | ) { |
| 280 | $this->logger->debug("Skipping {$originalLocalSymbol} because it is not being changed."); |
| 281 | continue; |
| 282 | } |
| 283 | |
| 284 | $unNamespacedOriginalSymbol = trim(str_replace($symbol->getNamespace(), '', $originalLocalSymbol), '\\'); |
| 285 | $namespacedOriginalSymbol = $symbol->getNamespace() . '\\' . $unNamespacedOriginalSymbol; |
| 286 | |
| 287 | $replacementSymbol = str_replace( |
| 288 | $namespaceSymbol->getOriginalSymbol(), |
| 289 | $namespaceSymbol->getReplacement(), |
| 290 | $namespacedOriginalSymbol |
| 291 | ); |
| 292 | |
| 293 | $aliasesPhpString .= $this->aliasedFunctionTemplate( |
| 294 | $namespacedOriginalSymbol, |
| 295 | $replacementSymbol, |
| 296 | ); |
| 297 | } |
| 298 | $aliasesPhpString .= "}" . PHP_EOL; // Close namespace. |
| 299 | |
| 300 | $autoloadAliasesFileString .= $aliasesPhpString; |
| 301 | } |
| 302 | |
| 303 | return $autoloadAliasesFileString; |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * Returns the PHP for `if(!function_exists...` for an aliased function. |
| 308 | * |
| 309 | * Ensures the correct leading backslashes. |
| 310 | * |
| 311 | * @param string $namespacedOriginalFunction |
| 312 | * @param string $namespacedReplacementFunction |
| 313 | */ |
| 314 | protected function aliasedFunctionTemplate( |
| 315 | string $namespacedOriginalFunction, |
| 316 | string $namespacedReplacementFunction |
| 317 | ): string { |
| 318 | $namespacedOriginalFunction = '\\\\' . trim($namespacedOriginalFunction, '\\'); |
| 319 | $namespacedOriginalFunction = preg_replace('/\\\\+/', '\\\\\\\\', $namespacedOriginalFunction); |
| 320 | |
| 321 | $localOriginalFunction = array_reverse(explode('\\', $namespacedOriginalFunction))[0]; |
| 322 | |
| 323 | $namespacedReplacementFunction = '\\' . trim($namespacedReplacementFunction, '\\'); |
| 324 | $namespacedReplacementFunction = preg_replace('/\\\\+/', '\\', $namespacedReplacementFunction); |
| 325 | |
| 326 | return <<<EOD |
| 327 | if(!function_exists('$namespacedOriginalFunction')){ |
| 328 | function $localOriginalFunction(...\$args) { |
| 329 | return $namespacedReplacementFunction(...func_get_args()); |
| 330 | } |
| 331 | } |
| 332 | EOD . PHP_EOL; |
| 333 | } |
| 334 | } |