matecat / xliff-parser

src/XliffUtils/DataRefReplacer.php

Spacing +155 added lines, -155 removed lines

@@ -16,7 +16,7 @@ 
      *
      * @param array $map
      */
-    public function __construct( array $map = null ) {
+    public function __construct(array $map = null) {
         $this->map = $map;
     }
 
@@ -31,35 +31,35 @@ 
      *
      * @return string
      */
-    public function replace( $string ) {
+    public function replace($string) {
         // if map is empty
         // or the string has not a dataRef attribute
         // return string as is
-        if ( empty( $this->map ) || !$this->hasAnyDataRefAttribute( $string ) ) {
+        if (empty($this->map) || !$this->hasAnyDataRefAttribute($string)) {
             return $string;
         }
 
         // (recursively) clean string from equiv-text eventually present
-        $string = $this->cleanFromEquivText( $string );
+        $string = $this->cleanFromEquivText($string);
 
-        $html = HtmlParser::parse( $string );
+        $html = HtmlParser::parse($string);
 
         // 1. Replace <ph>|<sc>|<ec> tags
-        foreach ( $html as $node ) {
-            $string = $this->recursiveAddEquivTextToPhTag( $node, $string );
+        foreach ($html as $node) {
+            $string = $this->recursiveAddEquivTextToPhTag($node, $string);
         }
 
         // 2. Replace <pc> tags
-        if ( $this->stringContainsPcTags( $string ) ) {
+        if ($this->stringContainsPcTags($string)) {
 
             // replace self-closed <pc />
-            $string = $this->replaceSelfClosedPcTags( $string );
+            $string = $this->replaceSelfClosedPcTags($string);
 
             // create a dataRefEnd map
             // (needed for correct handling of </pc> closing tags)
-            $dataRefEndMap = $this->buildDataRefEndMap( $html );
-            $string        = $this->replaceOpeningPcTags( $string );
-            $string        = $this->replaceClosingPcTags( $string, $dataRefEndMap );
+            $dataRefEndMap = $this->buildDataRefEndMap($html);
+            $string        = $this->replaceOpeningPcTags($string);
+            $string        = $this->replaceClosingPcTags($string, $dataRefEndMap);
         }
 
         return $string;
@@ -70,17 +70,17 @@ 
      *
      * @return bool
      */
-    private function hasAnyDataRefAttribute( $string ) {
+    private function hasAnyDataRefAttribute($string) {
         $dataRefTags = [
                 'dataRef',
                 'dataRefStart',
                 'dataRefEnd',
         ];
 
-        foreach ( $dataRefTags as $tag ) {
-            preg_match( '/ ' . $tag . '=[\\\\"](.*?)[\\\\"]/', $string, $matches );
+        foreach ($dataRefTags as $tag) {
+            preg_match('/ ' . $tag . '=[\\\\"](.*?)[\\\\"]/', $string, $matches);
 
-            if ( count( $matches ) > 0 ) {
+            if (count($matches) > 0) {
                 return true;
             }
         }
@@ -91,11 +91,11 @@ 
      *
      * @return string
      */
-    private function cleanFromEquivText( $string ) {
-        $html = HtmlParser::parse( $string );
+    private function cleanFromEquivText($string) {
+        $html = HtmlParser::parse($string);
 
-        foreach ( $html as $node ) {
-            $string = $this->recursiveCleanFromEquivText( $node, $string );
+        foreach ($html as $node) {
+            $string = $this->recursiveCleanFromEquivText($node, $string);
         }
 
         return $string;
@@ -114,57 +114,57 @@ 
      *
      * @return string
      */
-    private function recursiveAddEquivTextToPhTag( $node, $string ) {
-        if ( $node->has_children ) {
-            foreach ( $node->inner_html as $childNode ) {
-                $string = $this->recursiveAddEquivTextToPhTag( $childNode, $string );
+    private function recursiveAddEquivTextToPhTag($node, $string) {
+        if ($node->has_children) {
+            foreach ($node->inner_html as $childNode) {
+                $string = $this->recursiveAddEquivTextToPhTag($childNode, $string);
             }
         } else {
-            if ( $node->tagname === 'ph' || $node->tagname === 'sc' || $node->tagname === 'ec' ) {
-                if ( !isset( $node->attributes[ 'dataRef' ] ) ) {
+            if ($node->tagname === 'ph' || $node->tagname === 'sc' || $node->tagname === 'ec') {
+                if (!isset($node->attributes['dataRef'])) {
                     return $string;
                 }
 
-                $a = $node->node;  // complete match. Eg:  <ph id="source1" dataRef="source1"/>
-                $b = $node->attributes[ 'dataRef' ];   // map identifier. Eg: source1
+                $a = $node->node; // complete match. Eg:  <ph id="source1" dataRef="source1"/>
+                $b = $node->attributes['dataRef']; // map identifier. Eg: source1
 
 
                 // if isset a value in the map calculate base64 encoded value
                 // otherwise skip
-                if ( !in_array( $b, array_keys( $this->map ) ) ) {
+                if (!in_array($b, array_keys($this->map))) {
                     return $string;
                 }
 
                 // check if is null, in this case convert it to NULL string
-                if ( is_null( $this->map[ $b ] ) ) {
-                    $this->map[ $b ] = 'NULL';
+                if (is_null($this->map[$b])) {
+                    $this->map[$b] = 'NULL';
                 }
 
-                $value              = $this->map[ $b ];
-                $base64EncodedValue = base64_encode( $value );
+                $value              = $this->map[$b];
+                $base64EncodedValue = base64_encode($value);
 
-                if ( empty( $base64EncodedValue ) ) {
+                if (empty($base64EncodedValue)) {
                     return $string;
                 }
 
                 // if there is no id copy it from dataRef
-                $id = ( !isset( $node->attributes[ 'id' ] ) ) ? ' id="' . $b . '" removeId="true"' : '';
+                $id = (!isset($node->attributes['id'])) ? ' id="' . $b . '" removeId="true"' : '';
 
                 // introduce dataType for <ec>/<sc> tag handling
-                $dataType = ( $this->isAEcOrScTag( $node ) ) ? ' dataType="' . $node->tagname . '"' : '';
+                $dataType = ($this->isAEcOrScTag($node)) ? ' dataType="' . $node->tagname . '"' : '';
 
                 // replacement
-                $d = str_replace( '/', $id . $dataType . ' equiv-text="base64:' . $base64EncodedValue . '"/', $a );
-                $a = str_replace( [ '<', '>', '&gt;', '&lt;' ], '', $a );
-                $d = str_replace( [ '<', '>', '&gt;', '&lt;' ], '', $d );
+                $d = str_replace('/', $id . $dataType . ' equiv-text="base64:' . $base64EncodedValue . '"/', $a);
+                $a = str_replace(['<', '>', '&gt;', '&lt;'], '', $a);
+                $d = str_replace(['<', '>', '&gt;', '&lt;'], '', $d);
 
                 // convert <ec>/<sc> into <ph>
-                if ( $this->isAEcOrScTag( $node ) ) {
-                    $d = 'ph' . substr( $d, 2 );
-                    $d = trim( $d );
+                if ($this->isAEcOrScTag($node)) {
+                    $d = 'ph' . substr($d, 2);
+                    $d = trim($d);
                 }
 
-                return str_replace( $a, $d, $string );
+                return str_replace($a, $d, $string);
             }
         }
 
@@ -176,10 +176,10 @@ 
      *
      * @return bool
      */
-    private function stringContainsPcTags( $string ) {
-        preg_match_all( '/<pc (.*?)>/iu', $string, $openingPcMatches );
+    private function stringContainsPcTags($string) {
+        preg_match_all('/<pc (.*?)>/iu', $string, $openingPcMatches);
 
-        return ( isset( $openingPcMatches[ 0 ] ) && count( $openingPcMatches[ 0 ] ) > 0 );
+        return (isset($openingPcMatches[0]) && count($openingPcMatches[0]) > 0);
     }
 
     /**
@@ -187,20 +187,20 @@ 
      *
      * @return mixed
      */
-    private function replaceSelfClosedPcTags( $string ) {
+    private function replaceSelfClosedPcTags($string) {
 
         $regex = '/<pc[^>]+?\/>/iu';
-        preg_match_all( $regex, $string, $selfClosedPcMatches );
+        preg_match_all($regex, $string, $selfClosedPcMatches);
 
-        foreach ( $selfClosedPcMatches[ 0 ] as $match ) {
+        foreach ($selfClosedPcMatches[0] as $match) {
 
-            $html       = HtmlParser::parse( $match );
-            $node       = $html[ 0 ];
+            $html       = HtmlParser::parse($match);
+            $node       = $html[0];
             $attributes = $node->attributes;
 
-            if ( isset( $attributes[ 'dataRefStart' ] ) && array_key_exists( $node->attributes[ 'dataRefStart' ], $this->map ) ) {
-                $replacement = '<ph id="' . $attributes[ 'id' ] . '" dataType="pcSelf" originalData="' . base64_encode( $match ) . '" dataRef="' . $attributes[ 'dataRefStart' ] . '" equiv-text="base64:' . base64_encode( $this->map[ $node->attributes[ 'dataRefStart' ] ] ) . '"/>';
-                $string      = str_replace( $match, $replacement, $string );
+            if (isset($attributes['dataRefStart']) && array_key_exists($node->attributes['dataRefStart'], $this->map)) {
+                $replacement = '<ph id="' . $attributes['id'] . '" dataType="pcSelf" originalData="' . base64_encode($match) . '" dataRef="' . $attributes['dataRefStart'] . '" equiv-text="base64:' . base64_encode($this->map[$node->attributes['dataRefStart']]) . '"/>';
+                $string      = str_replace($match, $replacement, $string);
             }
         }
 
@@ -215,12 +215,12 @@ 
      *
      * @return array
      */
-    private function buildDataRefEndMap( $html ) {
+    private function buildDataRefEndMap($html) {
         $dataRefEndMap = [];
 
-        foreach ( $html as $index => $node ) {
-            if ( $node->tagname === 'pc' ) {
-                $this->extractDataRefMapRecursively( $node, $dataRefEndMap );
+        foreach ($html as $index => $node) {
+            if ($node->tagname === 'pc') {
+                $this->extractDataRefMapRecursively($node, $dataRefEndMap);
             }
         }
 
@@ -233,25 +233,25 @@ 
      * @param object $node
      * @param        $dataRefEndMap
      */
-    private function extractDataRefMapRecursively( $node, &$dataRefEndMap ) {
-        if ( $this->nodeContainsNestedPcTags( $node ) ) {
-            foreach ( $node->inner_html as $nestedNode ) {
-                $this->extractDataRefMapRecursively( $nestedNode, $dataRefEndMap );
+    private function extractDataRefMapRecursively($node, &$dataRefEndMap) {
+        if ($this->nodeContainsNestedPcTags($node)) {
+            foreach ($node->inner_html as $nestedNode) {
+                $this->extractDataRefMapRecursively($nestedNode, $dataRefEndMap);
             }
         }
 
         // EXCLUDE self closed <pc/>
-        if ( $node->tagname === 'pc' && $node->self_closed === false ) {
-            if ( isset( $node->attributes[ 'dataRefEnd' ] ) ) {
-                $dataRefEnd = $node->attributes[ 'dataRefEnd' ];
-            } elseif ( isset( $node->attributes[ 'dataRefStart' ] ) ) {
-                $dataRefEnd = $node->attributes[ 'dataRefStart' ];
+        if ($node->tagname === 'pc' && $node->self_closed === false) {
+            if (isset($node->attributes['dataRefEnd'])) {
+                $dataRefEnd = $node->attributes['dataRefEnd'];
+            } elseif (isset($node->attributes['dataRefStart'])) {
+                $dataRefEnd = $node->attributes['dataRefStart'];
             } else {
                 $dataRefEnd = null;
             }
 
             $dataRefEndMap[] = [
-                    'id'         => isset( $node->attributes[ 'id' ] ) ? $node->attributes[ 'id' ] : null,
+                    'id'         => isset($node->attributes['id']) ? $node->attributes['id'] : null,
                     'dataRefEnd' => $dataRefEnd,
             ];
         }
@@ -263,15 +263,15 @@ 
      *
      * @return string|string[]
      */
-    private function recursiveCleanFromEquivText( $node, $string ) {
-        if ( $node->has_children ) {
-            foreach ( $node->inner_html as $childNode ) {
-                $string = $this->recursiveCleanFromEquivText( $childNode, $string );
+    private function recursiveCleanFromEquivText($node, $string) {
+        if ($node->has_children) {
+            foreach ($node->inner_html as $childNode) {
+                $string = $this->recursiveCleanFromEquivText($childNode, $string);
             }
         } else {
-            if ( isset( $node->attributes[ 'dataRef' ] ) && array_key_exists( $node->attributes[ 'dataRef' ], $this->map ) ) {
-                $cleaned = preg_replace( '/ equiv-text="(.*?)"/', '', $node->node );
-                $string  = str_replace( $node->node, $cleaned, $string );
+            if (isset($node->attributes['dataRef']) && array_key_exists($node->attributes['dataRef'], $this->map)) {
+                $cleaned = preg_replace('/ equiv-text="(.*?)"/', '', $node->node);
+                $string  = str_replace($node->node, $cleaned, $string);
             }
         }
 
@@ -285,34 +285,34 @@ 
      *
      * @return string
      */
-    private function replaceOpeningPcTags( $string ) {
-        preg_match_all( '/<pc (.*?)>/iu', $string, $openingPcMatches );
+    private function replaceOpeningPcTags($string) {
+        preg_match_all('/<pc (.*?)>/iu', $string, $openingPcMatches);
 
-        foreach ( $openingPcMatches[ 0 ] as $index => $match ) {
-            $attr = HtmlParser::getAttributes( $openingPcMatches[ 1 ][ $index ] );
+        foreach ($openingPcMatches[0] as $index => $match) {
+            $attr = HtmlParser::getAttributes($openingPcMatches[1][$index]);
 
             // CASE 1 - Missing `dataRefStart`
-            if ( isset( $attr[ 'dataRefEnd' ] ) && !isset( $attr[ 'dataRefStart' ] ) ) {
-                $attr[ 'dataRefStart' ] = $attr[ 'dataRefEnd' ];
+            if (isset($attr['dataRefEnd']) && !isset($attr['dataRefStart'])) {
+                $attr['dataRefStart'] = $attr['dataRefEnd'];
             }
 
             // CASE 2 - Missing `dataRefEnd`
-            if ( isset( $attr[ 'dataRefStart' ] ) && !isset( $attr[ 'dataRefEnd' ] ) ) {
-                $attr[ 'dataRefEnd' ] = $attr[ 'dataRefStart' ];
+            if (isset($attr['dataRefStart']) && !isset($attr['dataRefEnd'])) {
+                $attr['dataRefEnd'] = $attr['dataRefStart'];
             }
 
-            if ( isset( $attr[ 'dataRefStart' ] ) ) {
+            if (isset($attr['dataRefStart'])) {
                 $startOriginalData       = $match; // opening <pc>
-                $startValue              = $this->map[ $attr[ 'dataRefStart' ] ] ?: 'NULL'; //handling null values in original data map
-                $base64EncodedStartValue = base64_encode( $startValue );
-                $base64StartOriginalData = base64_encode( $startOriginalData );
+                $startValue              = $this->map[$attr['dataRefStart']] ?: 'NULL'; //handling null values in original data map
+                $base64EncodedStartValue = base64_encode($startValue);
+                $base64StartOriginalData = base64_encode($startOriginalData);
 
                 // conversion for opening <pc> tag
-                $openingPcConverted = '<ph ' . ( ( isset( $attr[ 'id' ] ) ) ? 'id="' . $attr[ 'id' ] . '_1"' : '' ) . ' dataType="pcStart" originalData="' . $base64StartOriginalData . '" dataRef="'
-                        . $attr[ 'dataRefStart' ] . '" equiv-text="base64:'
+                $openingPcConverted = '<ph ' . ((isset($attr['id'])) ? 'id="' . $attr['id'] . '_1"' : '') . ' dataType="pcStart" originalData="' . $base64StartOriginalData . '" dataRef="'
+                        . $attr['dataRefStart'] . '" equiv-text="base64:'
                         . $base64EncodedStartValue . '"/>';
 
-                $string = str_replace( $startOriginalData, $openingPcConverted, $string );
+                $string = str_replace($startOriginalData, $openingPcConverted, $string);
             }
         }
 
@@ -328,33 +328,33 @@ 
      *
      * @return string
      */
-    private function replaceClosingPcTags( $string, $dataRefEndMap = [] ) {
-        preg_match_all( '|</pc>|iu', $string, $closingPcMatches, PREG_OFFSET_CAPTURE );
+    private function replaceClosingPcTags($string, $dataRefEndMap = []) {
+        preg_match_all('|</pc>|iu', $string, $closingPcMatches, PREG_OFFSET_CAPTURE);
         $delta = 0;
 
-        foreach ( $closingPcMatches[ 0 ] as $index => $match ) {
-            $offset = $match[ 1 ];
-            $length = strlen( $match[ 0 ] );
-            $attr   = $dataRefEndMap[ $index ];
+        foreach ($closingPcMatches[0] as $index => $match) {
+            $offset = $match[1];
+            $length = strlen($match[0]);
+            $attr   = $dataRefEndMap[$index];
 
-            if ( !empty( $attr ) && isset( $attr[ 'dataRefEnd' ] ) ) {
-                $endOriginalData       = $match[ 0 ]; // </pc>
-                $endValue              = $this->map[ $attr[ 'dataRefEnd' ] ] ?: 'NULL';
-                $base64EncodedEndValue = base64_encode( $endValue );
-                $base64EndOriginalData = base64_encode( $endOriginalData );
+            if (!empty($attr) && isset($attr['dataRefEnd'])) {
+                $endOriginalData       = $match[0]; // </pc>
+                $endValue              = $this->map[$attr['dataRefEnd']] ?: 'NULL';
+                $base64EncodedEndValue = base64_encode($endValue);
+                $base64EndOriginalData = base64_encode($endOriginalData);
 
                 // conversion for closing <pc> tag
-                $closingPcConverted = '<ph ' . ( ( isset( $attr[ 'id' ] ) ) ? 'id="' . $attr[ 'id' ] . '_2"' : '' ) . ' dataType="pcEnd" originalData="' . $base64EndOriginalData . '" dataRef="'
-                        . $attr[ 'dataRefEnd' ] . '" equiv-text="base64:' . $base64EncodedEndValue . '"/>';
+                $closingPcConverted = '<ph ' . ((isset($attr['id'])) ? 'id="' . $attr['id'] . '_2"' : '') . ' dataType="pcEnd" originalData="' . $base64EndOriginalData . '" dataRef="'
+                        . $attr['dataRefEnd'] . '" equiv-text="base64:' . $base64EncodedEndValue . '"/>';
 
-                $realOffset = ( $delta === 0 ) ? $offset : ( $offset + $delta );
+                $realOffset = ($delta === 0) ? $offset : ($offset + $delta);
 
-                $string = substr_replace( $string, $closingPcConverted, $realOffset, $length );
-                $delta  = $delta + strlen( $closingPcConverted ) - $length;
+                $string = substr_replace($string, $closingPcConverted, $realOffset, $length);
+                $delta  = $delta + strlen($closingPcConverted) - $length;
             }
         }
 
-        return !is_array( $string ) ? $string : implode( $string );
+        return !is_array($string) ? $string : implode($string);
     }
 
     /**
@@ -362,13 +362,13 @@ 
      *
      * @return bool
      */
-    private function nodeContainsNestedPcTags( $node ) {
-        if ( !$node->has_children ) {
+    private function nodeContainsNestedPcTags($node) {
+        if (!$node->has_children) {
             return false;
         }
 
-        foreach ( $node->inner_html as $nestedNode ) {
-            if ( $nestedNode->tagname === 'pc' && ( isset( $node->attributes[ 'dataRefEnd' ] ) || isset( $node->attributes[ 'dataRefStart' ] ) ) ) {
+        foreach ($node->inner_html as $nestedNode) {
+            if ($nestedNode->tagname === 'pc' && (isset($node->attributes['dataRefEnd']) || isset($node->attributes['dataRefStart']))) {
                 return true;
             }
         }
@@ -381,18 +381,18 @@ 
      *
      * @return string
      */
-    public function restore( $string ) {
+    public function restore($string) {
         // if map is empty return string as is
-        if ( empty( $this->map ) ) {
+        if (empty($this->map)) {
             return $string;
         }
 
         // replace eventual empty equiv-text=""
-        $string = str_replace( ' equiv-text=""', '', $string );
-        $html   = HtmlParser::parse( $string );
+        $string = str_replace(' equiv-text=""', '', $string);
+        $html   = HtmlParser::parse($string);
 
-        foreach ( $html as $node ) {
-            $string = $this->recursiveRemoveOriginalData( $node, $string );
+        foreach ($html as $node) {
+            $string = $this->recursiveRemoveOriginalData($node, $string);
         }
 
         return $string;
@@ -404,76 +404,76 @@ 
      *
      * @return string|string[]
      */
-    private function recursiveRemoveOriginalData( $node, $string ) {
-        if ( $node->has_children ) {
-            foreach ( $node->inner_html as $childNode ) {
-                $string = $this->recursiveRemoveOriginalData( $childNode, $string );
+    private function recursiveRemoveOriginalData($node, $string) {
+        if ($node->has_children) {
+            foreach ($node->inner_html as $childNode) {
+                $string = $this->recursiveRemoveOriginalData($childNode, $string);
             }
         } else {
 
-            if ( !isset( $node->attributes[ 'dataRef' ] ) ) {
+            if (!isset($node->attributes['dataRef'])) {
                 return $string;
             }
 
-            $a = $node->node;                  // complete match. Eg:  <ph id="source1" dataRef="source1"/>
-            $b = $node->attributes[ 'dataRef' ]; // map identifier. Eg: source1
-            $c = $node->terminator;            // terminator: Eg: >
+            $a = $node->node; // complete match. Eg:  <ph id="source1" dataRef="source1"/>
+            $b = $node->attributes['dataRef']; // map identifier. Eg: source1
+            $c = $node->terminator; // terminator: Eg: >
 
             // if isset a value in the map calculate base64 encoded value
             // or it is an empty string
             // otherwise skip
-            if ( !in_array( $b, array_keys( $this->map ) ) ) {
+            if (!in_array($b, array_keys($this->map))) {
                 return $string;
             }
 
             // check if is null, in this case convert it to NULL string
-            if ( is_null( $this->map[ $b ] ) ) {
-                $this->map[ $b ] = 'NULL';
+            if (is_null($this->map[$b])) {
+                $this->map[$b] = 'NULL';
             }
 
             // remove id?
-            $removeId = ( isset( $node->attributes[ 'removeId' ] ) && $node->attributes[ 'removeId' ] === "true" ) ? ' id="' . $b . '" removeId="true"' : '';
+            $removeId = (isset($node->attributes['removeId']) && $node->attributes['removeId'] === "true") ? ' id="' . $b . '" removeId="true"' : '';
 
             // grab dataType attribute for <ec>/<sc> tag handling
-            $dataType = ( $this->wasAEcOrScTag( $node ) ) ? ' dataType="' . $node->attributes[ 'dataType' ] . '"' : '';
+            $dataType = ($this->wasAEcOrScTag($node)) ? ' dataType="' . $node->attributes['dataType'] . '"' : '';
 
-            $d = str_replace( $removeId . $dataType . ' equiv-text="base64:' . base64_encode( $this->map[ $b ] ) . '"/' . $c, '/' . $c, $a );
+            $d = str_replace($removeId . $dataType . ' equiv-text="base64:' . base64_encode($this->map[$b]) . '"/' . $c, '/' . $c, $a);
 
             // replace original <ec>/<sc> tag
-            if ( $this->wasAEcOrScTag( $node ) ) {
-                $d = $node->attributes[ 'dataType' ] . substr( $d, 3 );
-                $d = trim( $d );
+            if ($this->wasAEcOrScTag($node)) {
+                $d = $node->attributes['dataType'] . substr($d, 3);
+                $d = trim($d);
             }
 
             // replace only content tag, no matter if the string is encoded or not
             // in this way we can handle string with mixed tags (encoded and not-encoded)
             // in the same string
-            $a = $this->purgeTags( $a );
-            $d = $this->purgeTags( $d );
+            $a = $this->purgeTags($a);
+            $d = $this->purgeTags($d);
 
-            $string = str_replace( $a, $d, $string );
+            $string = str_replace($a, $d, $string);
 
             // restoring <pc/> self-closed here
-            if ( Strings::contains( 'dataType="pcSelf"', $d ) ) {
-                preg_match( '/\s?originalData="(.*?)"\s?/', $d, $originalDataMatches );
+            if (Strings::contains('dataType="pcSelf"', $d)) {
+                preg_match('/\s?originalData="(.*?)"\s?/', $d, $originalDataMatches);
 
-                if ( isset( $originalDataMatches[ 1 ] ) ) {
-                    $originalData = base64_decode( $originalDataMatches[ 1 ] );
-                    $originalData = $this->purgeTags( $originalData );
-                    $string       = str_replace( $d, $originalData, $string );
+                if (isset($originalDataMatches[1])) {
+                    $originalData = base64_decode($originalDataMatches[1]);
+                    $originalData = $this->purgeTags($originalData);
+                    $string       = str_replace($d, $originalData, $string);
                 }
             }
 
             // restoring <pc> tags here
             // if <ph> tag has originalData and originalType is pcStart or pcEnd,
             // replace with original data
-            if ( Strings::contains( 'dataType="pcStart"', $d ) || Strings::contains( 'dataType="pcEnd"', $d ) ) {
-                preg_match( '/\s?originalData="(.*?)"\s?/', $d, $originalDataMatches );
+            if (Strings::contains('dataType="pcStart"', $d) || Strings::contains('dataType="pcEnd"', $d)) {
+                preg_match('/\s?originalData="(.*?)"\s?/', $d, $originalDataMatches);
 
-                if ( isset( $originalDataMatches[ 1 ] ) ) {
-                    $originalData = base64_decode( $originalDataMatches[ 1 ] );
-                    $originalData = $this->purgeTags( $originalData );
-                    $string       = str_replace( $d, $originalData, $string );
+                if (isset($originalDataMatches[1])) {
+                    $originalData = base64_decode($originalDataMatches[1]);
+                    $originalData = $this->purgeTags($originalData);
+                    $string       = str_replace($d, $originalData, $string);
                 }
             }
         }
@@ -486,8 +486,8 @@ 
      *
      * @return string
      */
-    private function purgeTags( $string ) {
-        return str_replace( [ '<', '>', '&lt;', '&gt;' ], '', $string );
+    private function purgeTags($string) {
+        return str_replace(['<', '>', '&lt;', '&gt;'], '', $string);
     }
 
     /**
@@ -497,8 +497,8 @@ 
      *
      * @return bool
      */
-    private function isAEcOrScTag( $node ) {
-        return ( $node->tagname === 'ec' || $node->tagname === 'sc' );
+    private function isAEcOrScTag($node) {
+        return ($node->tagname === 'ec' || $node->tagname === 'sc');
     }
 
     /**
@@ -509,7 +509,7 @@ 
      *
      * @return bool
      */
-    private function wasAEcOrScTag( $node ) {
-        return ( isset( $node->attributes[ 'dataType' ] ) && ( $node->attributes[ 'dataType' ] === 'ec' || $node->attributes[ 'dataType' ] === 'sc' ) );
+    private function wasAEcOrScTag($node) {
+        return (isset($node->attributes['dataType']) && ($node->attributes['dataType'] === 'ec' || $node->attributes['dataType'] === 'sc'));
     }
 }