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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Wt2Html\TT; |
| 5 | |
| 6 | use Wikimedia\Parsoid\Tokens\KV; |
| 7 | use Wikimedia\Parsoid\Wt2Html\Frame; |
| 8 | |
| 9 | /** |
| 10 | * Utility transformation manager for expanding attributes |
| 11 | * whose keys and/or values are not plain strings. |
| 12 | */ |
| 13 | class AttributeTransformManager { |
| 14 | /** |
| 15 | * @var array |
| 16 | */ |
| 17 | private $options; |
| 18 | |
| 19 | /** |
| 20 | * @var Frame |
| 21 | */ |
| 22 | private $frame; |
| 23 | |
| 24 | /** |
| 25 | * @param Frame $frame |
| 26 | * @param array $options |
| 27 | * - bool inTemplate (reqd) Is this being invoked while processing a template? |
| 28 | * - bool expandTemplates (reqd) Should we expand templates encountered here? |
| 29 | */ |
| 30 | public function __construct( Frame $frame, array $options ) { |
| 31 | $this->options = $options; |
| 32 | $this->frame = $frame; |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Expand both key and values of all key/value pairs. Used for generic |
| 37 | * (non-template) tokens in the AttributeExpander handler, which runs after |
| 38 | * templates are already expanded. |
| 39 | * |
| 40 | * @param KV[] $attributes |
| 41 | * @return KV[] expanded attributes |
| 42 | */ |
| 43 | public function process( array $attributes ): array { |
| 44 | // Transform each argument (key and value). |
| 45 | foreach ( $attributes as &$cur ) { |
| 46 | $k = $cur->k; |
| 47 | $v = $cur->v; |
| 48 | if ( $cur->v === null ) { |
| 49 | $cur->v = $v = ''; |
| 50 | } |
| 51 | |
| 52 | // fast path for string-only attributes |
| 53 | if ( is_string( $k ) && is_string( $v ) ) { |
| 54 | continue; |
| 55 | } |
| 56 | |
| 57 | $expandV = false; |
| 58 | if ( is_array( $v ) ) { |
| 59 | foreach ( $v as $vv ) { |
| 60 | if ( !is_string( $vv ) ) { |
| 61 | $expandV = true; |
| 62 | break; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | if ( $expandV ) { |
| 67 | // transform the value |
| 68 | $v = $this->frame->expand( $v, [ |
| 69 | 'attrExpansion' => true, |
| 70 | 'expandTemplates' => $this->options['expandTemplates'], |
| 71 | 'inTemplate' => $this->options['inTemplate'], |
| 72 | 'srcOffsets' => $cur->srcOffsets->value, |
| 73 | ] ); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | $expandK = false; |
| 78 | if ( is_array( $k ) ) { |
| 79 | foreach ( $k as $kk ) { |
| 80 | if ( !is_string( $kk ) ) { |
| 81 | $expandK = true; |
| 82 | break; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | if ( $expandK ) { |
| 87 | // transform the key |
| 88 | $k = $this->frame->expand( $k, [ |
| 89 | 'attrExpansion' => true, |
| 90 | 'expandTemplates' => $this->options['expandTemplates'], |
| 91 | 'inTemplate' => $this->options['inTemplate'], |
| 92 | 'srcOffsets' => $cur->srcOffsets->key, |
| 93 | ] ); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | if ( $expandK || $expandV ) { |
| 98 | $cur = new KV( $k, $v, $cur->srcOffsets ); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | return $attributes; |
| 103 | } |
| 104 | } |