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| 1 | <?php |
| 2 | /** |
| 3 | * Copies license files from original folders. |
| 4 | * Edits Phpdoc to record the file was changed. |
| 5 | * |
| 6 | * MIT states: "The above copyright notice and this permission notice shall be |
| 7 | * included in all copies or substantial portions of the Software." |
| 8 | * |
| 9 | * GPL states: "You must cause the modified files to carry prominent notices stating |
| 10 | * that you changed the files and the date of any change." |
| 11 | * |
| 12 | * @see https://github.com/coenjacobs/mozart/issues/87 |
| 13 | * |
| 14 | * @author BrianHenryIE |
| 15 | */ |
| 16 | |
| 17 | namespace BrianHenryIE\Strauss; |
| 18 | |
| 19 | use BrianHenryIE\Strauss\Composer\ComposerPackage; |
| 20 | use BrianHenryIE\Strauss\Composer\Extra\StraussConfig; |
| 21 | use League\Flysystem\Filesystem; |
| 22 | use League\Flysystem\Local\LocalFilesystemAdapter; |
| 23 | use Symfony\Component\Finder\Finder; |
| 24 | |
| 25 | class Licenser |
| 26 | { |
| 27 | protected string $workingDir; |
| 28 | |
| 29 | protected string $vendorDir; |
| 30 | |
| 31 | /** @var ComposerPackage[] */ |
| 32 | protected array $dependencies; |
| 33 | |
| 34 | // The author of the current project who is running Strauss to make the changes to the required libraries. |
| 35 | protected string $author; |
| 36 | |
| 37 | protected string $targetDirectory; |
| 38 | |
| 39 | protected bool $includeModifiedDate; |
| 40 | |
| 41 | /** |
| 42 | * @see StraussConfig::isIncludeAuthor() |
| 43 | * @var bool |
| 44 | */ |
| 45 | protected bool $includeAuthor = true; |
| 46 | |
| 47 | /** |
| 48 | * An array of files relative to the project vendor folder. |
| 49 | * |
| 50 | * @var string[] |
| 51 | */ |
| 52 | protected array $discoveredLicenseFiles = array(); |
| 53 | |
| 54 | /** @var Filesystem */ |
| 55 | protected $filesystem; |
| 56 | |
| 57 | /** |
| 58 | * Licenser constructor. |
| 59 | * |
| 60 | * @param string $workingDir |
| 61 | * @param ComposerPackage[] $dependencies Whose folders are searched for existing license.txt files. |
| 62 | * @param string $author To add to each modified file's header |
| 63 | */ |
| 64 | public function __construct(StraussConfig $config, string $workingDir, array $dependencies, string $author) |
| 65 | { |
| 66 | $this->workingDir = $workingDir; |
| 67 | $this->dependencies = $dependencies; |
| 68 | $this->author = $author; |
| 69 | |
| 70 | $this->targetDirectory = $config->getTargetDirectory(); |
| 71 | $this->vendorDir = $config->getVendorDirectory(); |
| 72 | $this->includeModifiedDate = $config->isIncludeModifiedDate(); |
| 73 | $this->includeAuthor = $config->isIncludeAuthor(); |
| 74 | |
| 75 | $this->filesystem = new Filesystem(new LocalFilesystemAdapter('/')); |
| 76 | } |
| 77 | |
| 78 | public function copyLicenses(): void |
| 79 | { |
| 80 | $this->findLicenseFiles(); |
| 81 | |
| 82 | foreach ($this->getDiscoveredLicenseFiles() as $licenseFile) { |
| 83 | $targetLicenseFile = $this->targetDirectory . $licenseFile; |
| 84 | |
| 85 | $targetLicenseFileDir = dirname($targetLicenseFile); |
| 86 | |
| 87 | // Don't try copy it if it's already there. |
| 88 | if ($this->filesystem->fileExists($targetLicenseFile)) { |
| 89 | continue; |
| 90 | } |
| 91 | |
| 92 | // Don't add licenses to non-existent directories – there were no files copied there! |
| 93 | if (! is_dir($targetLicenseFileDir)) { |
| 94 | continue; |
| 95 | } |
| 96 | |
| 97 | $this->filesystem->copy( |
| 98 | $this->vendorDir . $licenseFile, |
| 99 | $targetLicenseFile |
| 100 | ); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * @see https://www.phpliveregex.com/p/A5y |
| 106 | */ |
| 107 | public function findLicenseFiles(?Finder $finder = null): void |
| 108 | { |
| 109 | // Include all license files in the dependency path. |
| 110 | $finder = $finder ?? new Finder(); |
| 111 | |
| 112 | /** @var ComposerPackage $dependency */ |
| 113 | foreach ($this->dependencies as $dependency) { |
| 114 | $packagePath = $dependency->getPackageAbsolutePath(); |
| 115 | |
| 116 | // If packages happen to have their vendor dir, i.e. locally required packages, don't included the licenses |
| 117 | // from their vendor dir (they should be included otherwise anyway). |
| 118 | // $dependency->getVendorDir() |
| 119 | $finder->files()->in($packagePath)->followLinks()->exclude(array( 'vendor' ))->name('/^.*licen.e.*/i'); |
| 120 | |
| 121 | /** @var \SplFileInfo $foundFile */ |
| 122 | foreach ($finder as $foundFile) { |
| 123 | $filePath = $foundFile->getPathname(); |
| 124 | |
| 125 | // Replace multiple \ and/or / with OS native DIRECTORY_SEPARATOR. |
| 126 | $filePath = preg_replace('#[\\\/]+#', DIRECTORY_SEPARATOR, $filePath); |
| 127 | |
| 128 | $this->discoveredLicenseFiles[$filePath] = $dependency->getPackageName(); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * @return string[] |
| 135 | */ |
| 136 | public function getDiscoveredLicenseFiles(): array |
| 137 | { |
| 138 | return array_keys($this->discoveredLicenseFiles); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * @param array<string, ComposerPackage> $modifiedFiles |
| 143 | * |
| 144 | * @throws \Exception |
| 145 | */ |
| 146 | public function addInformationToUpdatedFiles(array $modifiedFiles): void |
| 147 | { |
| 148 | // E.g. "25-April-2021". |
| 149 | $date = gmdate("d-F-Y", time()); |
| 150 | |
| 151 | foreach ($modifiedFiles as $relativeFilePath => $package) { |
| 152 | $filepath = $this->workingDir . $this->targetDirectory . $relativeFilePath; |
| 153 | |
| 154 | if (!$this->filesystem->fileExists($filepath)) { |
| 155 | continue; |
| 156 | } |
| 157 | |
| 158 | $contents = $this->filesystem->read($filepath); |
| 159 | |
| 160 | $updatedContents = $this->addChangeDeclarationToPhpString( |
| 161 | $contents, |
| 162 | $date, |
| 163 | $package->getPackageName(), |
| 164 | $package->getLicense() |
| 165 | ); |
| 166 | |
| 167 | if ($updatedContents !== $contents) { |
| 168 | $this->filesystem->write($filepath, $updatedContents); |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Given a php file as a string, edit its header phpdoc, or add a header, to include: |
| 175 | * |
| 176 | * "Modified by {author} on {date} using Strauss. |
| 177 | * @see https://github.com/BrianHenryIE/strauss" |
| 178 | * |
| 179 | * Should probably include the original license in each file since it'll often be a mix, with the parent |
| 180 | * project often being a GPL WordPress plugin. |
| 181 | * |
| 182 | * Find the string between the end of php-opener and the first valid code. |
| 183 | * First valid code will be a line whose first non-whitespace character is not / or * ?... NO! |
| 184 | * If the first non whitespace string after php-opener is multiline-comment-opener, find the |
| 185 | * closing multiline-comment-closer |
| 186 | * / If there's already a comment, work within that comment |
| 187 | * If there is no mention in the header of the license already, add it. |
| 188 | * Add a note that changes have been made. |
| 189 | * |
| 190 | * @param string $phpString Code. |
| 191 | */ |
| 192 | public function addChangeDeclarationToPhpString( |
| 193 | string $phpString, |
| 194 | string $modifiedDate, |
| 195 | string $packageName, |
| 196 | string $packageLicense |
| 197 | ) : string { |
| 198 | |
| 199 | $author = $this->author; |
| 200 | |
| 201 | $licenseDeclaration = "@license {$packageLicense}"; |
| 202 | $modifiedDeclaration = 'Modified'; |
| 203 | if ($this->includeAuthor) { |
| 204 | $modifiedDeclaration .= " by {$author}"; |
| 205 | } |
| 206 | if ($this->includeModifiedDate) { |
| 207 | $modifiedDeclaration .= " on {$modifiedDate}"; |
| 208 | } |
| 209 | $straussLink = 'https://github.com/BrianHenryIE/strauss'; |
| 210 | $modifiedDeclaration .= " using {@see {$straussLink}}."; |
| 211 | |
| 212 | $startOfFileArray = []; |
| 213 | $tokenizeString = token_get_all($phpString); |
| 214 | |
| 215 | foreach ($tokenizeString as $token) { |
| 216 | if (is_array($token) && !in_array($token[1], ['namespace', '/*', ' /*'])) { |
| 217 | $startOfFileArray[] = $token[1]; |
| 218 | $token = array_shift($tokenizeString); |
| 219 | |
| 220 | if (is_array($token) && stristr($token[1], 'strauss')) { |
| 221 | return $phpString; |
| 222 | } |
| 223 | } elseif (!is_array($token)) { |
| 224 | $startOfFileArray[] = $token; |
| 225 | } |
| 226 | } |
| 227 | // Not in use yet (because all tests are passing) but the idea of capturing the file header and only editing |
| 228 | // that seems more reasonable than searching the whole file. |
| 229 | $startOfFile = implode('', $startOfFileArray); |
| 230 | |
| 231 | // php-open followed by some whitespace and new line until the first ... |
| 232 | $noCommentBetweenPhpOpenAndFirstCodePattern = '~<\?php[\s\n]*[\w\\\?]+~'; |
| 233 | |
| 234 | $multilineCommentCapturePattern = ' |
| 235 | ~ # Start the pattern |
| 236 | ( |
| 237 | <\?php[\S\s]* # match the beginning of the files php-open and following whitespace |
| 238 | ) |
| 239 | ( |
| 240 | \*[\S\s.]* # followed by a multiline-comment-open |
| 241 | ) |
| 242 | ( |
| 243 | \*/ # Capture the multiline-comment-close separately |
| 244 | ) |
| 245 | ~Ux'; // U: Non-greedy matching, x: ignore whitespace in pattern. |
| 246 | |
| 247 | $replaceInMultilineCommentFunction = function ($matches) use ( |
| 248 | $licenseDeclaration, |
| 249 | $modifiedDeclaration |
| 250 | ) { |
| 251 | // Find the line prefix and use it, i.e. could be none, asterisk or space-asterisk. |
| 252 | $commentLines = explode("\n", $matches[2]); |
| 253 | |
| 254 | if (isset($commentLines[1])&& 1 === preg_match('/^([\s\\\*]*)/', $commentLines[1], $output_array)) { |
| 255 | $lineStart = $output_array[1]; |
| 256 | } else { |
| 257 | $lineStart = ' * '; |
| 258 | } |
| 259 | |
| 260 | $appendString = "*\n"; |
| 261 | |
| 262 | // If the license is not already specified in the header, add it. |
| 263 | if (false === strpos($matches[2], 'licen')) { |
| 264 | $appendString .= "{$lineStart}{$licenseDeclaration}\n"; |
| 265 | } |
| 266 | |
| 267 | $appendString .= "{$lineStart}{$modifiedDeclaration}\n"; |
| 268 | |
| 269 | $commentEnd = rtrim(rtrim($lineStart, ' '), '*').'*/'; |
| 270 | |
| 271 | $replaceWith = $matches[1] . $matches[2] . $appendString . $commentEnd; |
| 272 | |
| 273 | return $replaceWith; |
| 274 | }; |
| 275 | |
| 276 | // If it's a simple case where there is no existing header, add the existing license. |
| 277 | if (1 === preg_match($noCommentBetweenPhpOpenAndFirstCodePattern, $phpString)) { |
| 278 | $modifiedComment = "/**\n * {$licenseDeclaration}\n *\n * {$modifiedDeclaration}\n */"; |
| 279 | $updatedPhpString = preg_replace('~<\?php~', "<?php\n". $modifiedComment, $phpString, 1); |
| 280 | } else { |
| 281 | $updatedPhpString = preg_replace_callback( |
| 282 | $multilineCommentCapturePattern, |
| 283 | $replaceInMultilineCommentFunction, |
| 284 | $phpString, |
| 285 | 1 |
| 286 | ); |
| 287 | } |
| 288 | |
| 289 | return $updatedPhpString; |
| 290 | } |
| 291 | } |