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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Verba\Tool; |
| 6 | |
| 7 | use RuntimeException; |
| 8 | |
| 9 | /** |
| 10 | * Reconciles a domain's catalog files against the current source: fresh ids are |
| 11 | * added as untranslated, existing translations are kept, a reappearing id is |
| 12 | * restored from its ordinary or contextual obsolete section, and a vanished id |
| 13 | * is parked there unless pruning. Rewrites are deterministic. |
| 14 | * |
| 15 | * @api |
| 16 | */ |
| 17 | final class Sync |
| 18 | { |
| 19 | public function __construct( |
| 20 | private readonly Domain $domain, |
| 21 | private readonly bool $prune = false, |
| 22 | ) {} |
| 23 | |
| 24 | public function run(): SyncReport |
| 25 | { |
| 26 | $extraction = new Extractor($this->domain)->extract(); |
| 27 | $fresh = $extraction['messages']; |
| 28 | $freshContexts = $extraction['contexts']; |
| 29 | |
| 30 | $locales = []; |
| 31 | |
| 32 | foreach ($this->domain->locales as $locale) { |
| 33 | $locales[$locale] = $this->reconcile($locale, $fresh, $freshContexts); |
| 34 | } |
| 35 | |
| 36 | return new SyncReport($this->domain->name, $locales, $extraction['warnings']); |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * @param array<string, Message> $fresh |
| 41 | * @param array<string, array<string, Message>> $freshContexts |
| 42 | * @return array{added: int, obsolete: int, total: int, changed: bool} |
| 43 | */ |
| 44 | private function reconcile(string $locale, array $fresh, array $freshContexts): array |
| 45 | { |
| 46 | $file = $this->domain->file($locale); |
| 47 | $catalog = CatalogFile::load($file); |
| 48 | $section = $this->reconcileSection($fresh, $catalog->messages, $catalog->obsolete); |
| 49 | $messages = $section['messages']; |
| 50 | $added = $section['added']; |
| 51 | $contexts = []; |
| 52 | |
| 53 | foreach ($freshContexts as $context => $contextFresh) { |
| 54 | $section = $this->reconcileSection( |
| 55 | $contextFresh, |
| 56 | $catalog->contexts[$context] ?? [], |
| 57 | $catalog->obsoleteContexts[$context] ?? [], |
| 58 | ); |
| 59 | $contexts[$context] = $section['messages']; |
| 60 | $added += $section['added']; |
| 61 | } |
| 62 | |
| 63 | if ($this->prune) { |
| 64 | $obsolete = []; |
| 65 | $obsoleteContexts = []; |
| 66 | } else { |
| 67 | $obsolete = self::parkSection($catalog->messages, $catalog->obsolete, $fresh); |
| 68 | $obsoleteContexts = $this->parkContexts($catalog, $freshContexts); |
| 69 | } |
| 70 | |
| 71 | $next = new CatalogFile( |
| 72 | $messages, |
| 73 | $obsolete, |
| 74 | $catalog->plural, |
| 75 | $contexts, |
| 76 | $obsoleteContexts, |
| 77 | ); |
| 78 | $rendered = $next->render(); |
| 79 | $changed = !is_file($file) || file_get_contents($file) !== $rendered; |
| 80 | |
| 81 | if ($changed) { |
| 82 | $this->write($file, $rendered); |
| 83 | } |
| 84 | |
| 85 | return [ |
| 86 | 'added' => $added, |
| 87 | 'obsolete' => count($obsolete) + self::contextSize($obsoleteContexts), |
| 88 | 'total' => count($messages) + self::contextSize($contexts), |
| 89 | 'changed' => $changed, |
| 90 | ]; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @param array<string, Message> $fresh |
| 95 | * @param array<string, string|list<string>|null> $messages |
| 96 | * @param array<string, string|list<string>|null> $obsolete |
| 97 | * @return array{messages: array<string, string|list<string>|null>, added: int} |
| 98 | */ |
| 99 | private function reconcileSection(array $fresh, array $messages, array $obsolete): array |
| 100 | { |
| 101 | $next = []; |
| 102 | $added = 0; |
| 103 | |
| 104 | foreach (array_keys($fresh) as $id) { |
| 105 | if (array_key_exists($id, $messages)) { |
| 106 | $next[$id] = $messages[$id]; |
| 107 | } elseif (array_key_exists($id, $obsolete)) { |
| 108 | $next[$id] = $obsolete[$id]; |
| 109 | } else { |
| 110 | $next[$id] = null; |
| 111 | $added++; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | return ['messages' => $next, 'added' => $added]; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * @param array<string, string|list<string>|null> $messages |
| 120 | * @param array<string, string|list<string>|null> $parked |
| 121 | * @param array<string, Message> $fresh |
| 122 | * @return array<string, string|list<string>|null> |
| 123 | */ |
| 124 | private static function parkSection(array $messages, array $parked, array $fresh): array |
| 125 | { |
| 126 | $obsolete = []; |
| 127 | |
| 128 | foreach ($messages as $id => $value) { |
| 129 | if (array_key_exists($id, $fresh)) { |
| 130 | continue; |
| 131 | } |
| 132 | |
| 133 | $obsolete[$id] = $value; |
| 134 | } |
| 135 | |
| 136 | foreach ($parked as $id => $value) { |
| 137 | if (array_key_exists($id, $fresh) || array_key_exists($id, $obsolete)) { |
| 138 | continue; |
| 139 | } |
| 140 | |
| 141 | $obsolete[$id] = $value; |
| 142 | } |
| 143 | |
| 144 | return $obsolete; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * @param array<string, array<string, Message>> $fresh |
| 149 | * @return array<string, array<string, string|list<string>|null>> |
| 150 | */ |
| 151 | private function parkContexts(CatalogFile $catalog, array $fresh): array |
| 152 | { |
| 153 | $contexts = []; |
| 154 | $names = array_unique([ |
| 155 | ...array_keys($catalog->contexts), |
| 156 | ...array_keys($catalog->obsoleteContexts), |
| 157 | ]); |
| 158 | |
| 159 | foreach ($names as $context) { |
| 160 | $messages = self::parkSection( |
| 161 | $catalog->contexts[$context] ?? [], |
| 162 | $catalog->obsoleteContexts[$context] ?? [], |
| 163 | $fresh[$context] ?? [], |
| 164 | ); |
| 165 | |
| 166 | if ($messages !== []) { |
| 167 | $contexts[$context] = $messages; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | return $contexts; |
| 172 | } |
| 173 | |
| 174 | /** @param array<string, array<string, string|list<string>|null>> $contexts */ |
| 175 | private static function contextSize(array $contexts): int |
| 176 | { |
| 177 | return array_sum(array_map(count(...), $contexts)); |
| 178 | } |
| 179 | |
| 180 | private function write(string $file, string $contents): void |
| 181 | { |
| 182 | $dir = dirname($file); |
| 183 | $temp = null; |
| 184 | $error = null; |
| 185 | |
| 186 | // Filesystem functions warn before returning failure; this method checks every result below. |
| 187 | set_error_handler(static function (int $_severity, string $message) use (&$error): bool { |
| 188 | $error = $message; |
| 189 | |
| 190 | return true; |
| 191 | }); |
| 192 | |
| 193 | try { |
| 194 | if (!is_dir($dir)) { |
| 195 | $error = null; |
| 196 | |
| 197 | if (!mkdir($dir, 0o755, true) && !is_dir($dir)) { |
| 198 | throw self::filesystemError("Cannot create catalog directory '{$dir}'", $error); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | $temp = $file . '.' . bin2hex(random_bytes(6)) . '.tmp'; |
| 203 | $error = null; |
| 204 | |
| 205 | if (file_put_contents($temp, $contents) !== strlen($contents)) { |
| 206 | throw self::filesystemError("Cannot write temporary catalog for '{$file}'", $error); |
| 207 | } |
| 208 | |
| 209 | $error = null; |
| 210 | |
| 211 | if (!rename($temp, $file)) { |
| 212 | throw self::filesystemError("Cannot replace catalog '{$file}'", $error); |
| 213 | } |
| 214 | } finally { |
| 215 | if ($temp !== null && is_file($temp)) { |
| 216 | unlink($temp); |
| 217 | } |
| 218 | |
| 219 | restore_error_handler(); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | private static function filesystemError(string $message, ?string $cause): RuntimeException |
| 224 | { |
| 225 | return new RuntimeException($cause === null ? $message : $message . ': ' . $cause); |
| 226 | } |
| 227 | } |