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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Drupal\name\Utility; |
| 6 | |
| 7 | /** |
| 8 | * String matching helpers for name field autocomplete. |
| 9 | * |
| 10 | * @internal |
| 11 | */ |
| 12 | final class AutocompleteMatcher { |
| 13 | |
| 14 | /** |
| 15 | * Resolves the effective autocomplete match mode for a single component. |
| 16 | * |
| 17 | * @param array<string, mixed> $settings |
| 18 | * The field settings array from FieldDefinitionInterface::getSettings(). |
| 19 | * @param string $component |
| 20 | * The component machine name (for example, "given"). |
| 21 | * |
| 22 | * @return string |
| 23 | * Either "starts_with" or "contains". Falls back to "starts_with" for any |
| 24 | * legacy configuration that predates these settings. |
| 25 | */ |
| 26 | public static function resolveMatchMode(array $settings, string $component): string { |
| 27 | $override = $settings['autocomplete_match_overrides'][$component] ?? ''; |
| 28 | $override_valid = $override === 'contains' || $override === 'starts_with'; |
| 29 | if ($override_valid) { |
| 30 | return $override; |
| 31 | } |
| 32 | return ($settings['autocomplete_match'] ?? 'starts_with') === 'contains' |
| 33 | ? 'contains' |
| 34 | : 'starts_with'; |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Applies the resolved match mode to an in-memory string comparison. |
| 39 | */ |
| 40 | public static function stringMatches(string $haystack, string $needle, string $mode): bool { |
| 41 | if ($needle === '') { |
| 42 | return FALSE; |
| 43 | } |
| 44 | $position = mb_strpos(mb_strtolower($haystack), $needle); |
| 45 | if ($position === FALSE) { |
| 46 | return FALSE; |
| 47 | } |
| 48 | return $mode === 'contains' ? TRUE : $position === 0; |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Adds matching option values while honoring the shared result limit. |
| 53 | * |
| 54 | * @param array<string, mixed> $options |
| 55 | * The option list keyed by stored value. |
| 56 | * @param string $test_string |
| 57 | * The lowercase token to match. |
| 58 | * @param string $mode |
| 59 | * The match mode. |
| 60 | * @param string $base_string |
| 61 | * The prefix to prepend to matched option keys. |
| 62 | * @param array<string, string> $matches |
| 63 | * The current match list. |
| 64 | * @param int $limit |
| 65 | * The remaining match limit. |
| 66 | */ |
| 67 | public static function collectOptionMatches(array $options, string $test_string, string $mode, string $base_string, array &$matches, int &$limit): void { |
| 68 | foreach ($options as $key => $option) { |
| 69 | $value_key = (string) $key; |
| 70 | $value_mismatch = !self::stringMatches($value_key, $test_string, $mode); |
| 71 | $option_mismatch = !self::stringMatches((string) $option, $test_string, $mode); |
| 72 | $no_match = $value_mismatch && $option_mismatch; |
| 73 | if ($no_match) { |
| 74 | continue; |
| 75 | } |
| 76 | $matches[$base_string . $value_key] = $value_key; |
| 77 | $limit -= 1; |
| 78 | if ($limit <= 0) { |
| 79 | return; |
| 80 | } |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | } |