Merge pull request #72 from creative-commoners/pulls/3/php81

ENH PHP 8.1 compatibility

src/Cache/FileTextCache/Cache.php

@@ -42,7 +42,7 @@ class Cache implements FileTextCache, Flushable
      */
     protected function getKey(File $file)
     {
-        return md5($file->getFilename());
+        return md5($file->getFilename() ?? '');
     }
 
     /**

src/Extractor/FileTextExtractor.php

@@ -58,7 +58,7 @@ abstract class FileTextExtractor
         arsort($classPriorities);
 
         // Save classes
-        $sortedClasses = array_keys($classPriorities);
+        $sortedClasses = array_keys($classPriorities ?? []);
         return self::$sorted_extractor_classes = $sortedClasses;
     }
 
@@ -81,7 +81,7 @@ abstract class FileTextExtractor
      */
     public static function for_file($file)
     {
-        if (!$file || (is_string($file) && !file_exists($file))) {
+        if (!$file || (is_string($file) && !file_exists($file ?? ''))) {
             return null;
         }
 
@@ -137,11 +137,11 @@ abstract class FileTextExtractor
         }
 
         // Remove any existing temp files with this name
-        if (file_exists($path)) {
+        if (file_exists($path ?? '')) {
-            unlink($path);
+            unlink($path ?? '');
         }
 
-        $bytesWritten = file_put_contents($path, $file->getStream());
+        $bytesWritten = file_put_contents($path ?? '', $file->getStream());
         if (false === $bytesWritten) {
             throw new Exception(static::class . '->getPathFromFile() failed to write temporary file');
         }

src/Extractor/HTMLTextExtractor.php

@@ -34,7 +34,7 @@ class HTMLTextExtractor extends FileTextExtractor
      */
     public function supportsExtension($extension)
     {
-        return in_array(strtolower($extension), ["html", "htm", "xhtml"]);
+        return in_array(strtolower($extension ?? ''), ["html", "htm", "xhtml"]);
     }
 
     /**
@@ -43,7 +43,7 @@ class HTMLTextExtractor extends FileTextExtractor
      */
     public function supportsMime($mime)
     {
-        return strtolower($mime) === 'text/html';
+        return strtolower($mime ?? '') === 'text/html';
     }
 
     /**
@@ -56,7 +56,7 @@ class HTMLTextExtractor extends FileTextExtractor
      */
     public function getContent($file)
     {
-        $content = $file instanceof File ? $file->getString() : file_get_contents($file);
+        $content = $file instanceof File ? $file->getString() : file_get_contents($file ?? '');
 
         // Yes, yes, regex'ing HTML is evil.
         // Since we don't care about well-formedness or markup here, it does the job.
@@ -82,9 +82,9 @@ class HTMLTextExtractor extends FileTextExtractor
                 '@</?((frameset)|(frame)|(iframe))@iu',
             ],
             [' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', "$0", "$0", "$0", "$0", "$0", "$0", "$0", "$0"],
-            $content
+            $content ?? ''
         );
 
-        return strip_tags($content);
+        return strip_tags($content ?? '');
     }
 }

src/Extractor/PDFTextExtractor.php

@@ -33,18 +33,18 @@ class PDFTextExtractor extends FileTextExtractor
     public function isAvailable()
     {
         $bin = $this->bin('pdftotext');
-        return $bin && file_exists($bin) && is_executable($bin);
+        return $bin && file_exists($bin ?? '') && is_executable($bin ?? '');
     }
 
     public function supportsExtension($extension)
     {
-        return strtolower($extension) === 'pdf';
+        return strtolower($extension ?? '') === 'pdf';
     }
 
     public function supportsMime($mime)
     {
         return in_array(
-            strtolower($mime),
+            strtolower($mime ?? ''),
             [
                 'application/pdf',
                 'application/x-pdf',
@@ -72,7 +72,7 @@ class PDFTextExtractor extends FileTextExtractor
         // Find program in each path
         foreach ($locations as $location) {
             $path = "{$location}/{$program}";
-            if (file_exists($path)) {
+            if (file_exists($path ?? '')) {
                 return $path;
             }
             if (file_exists($path . '.exe')) {
@@ -86,7 +86,7 @@ class PDFTextExtractor extends FileTextExtractor
 
     public function getContent($file)
     {
-        if (!$file || (is_string($file) && !file_exists($file))) {
+        if (!$file || (is_string($file) && !file_exists($file ?? ''))) {
             // no file
             return '';
         }
@@ -108,7 +108,7 @@ class PDFTextExtractor extends FileTextExtractor
         }
 
         $path = $file instanceof File ? $this->getPathFromFile($file) : $file;
-        exec(sprintf('%s %s - 2>&1', $this->bin('pdftotext'), escapeshellarg($path)), $content, $err);
+        exec(sprintf('%s %s - 2>&1', $this->bin('pdftotext'), escapeshellarg($path ?? '')), $content, $err);
 
         if ($err) {
             throw new Exception(sprintf(
@@ -141,6 +141,6 @@ class PDFTextExtractor extends FileTextExtractor
             'st' => 'st'
         ];
 
-        return str_replace(array_keys($mapping), array_values($mapping), $input);
+        return str_replace(array_keys($mapping ?? []), array_values($mapping ?? []), $input ?? '');
     }
 }

src/Extractor/SolrCellTextExtractor.php

@@ -80,7 +80,7 @@ class SolrCellTextExtractor extends FileTextExtractor
     public function supportsExtension($extension)
     {
         return in_array(
-            strtolower($extension),
+            strtolower($extension ?? ''),
             [
                 'pdf', 'doc', 'docx', 'xls', 'xlsx',
                 'epub', 'rtf', 'odt', 'fodt', 'ods', 'fods',
@@ -106,12 +106,12 @@ class SolrCellTextExtractor extends FileTextExtractor
      */
     public function getContent($file)
     {
-        if (!$file || (is_string($file) && !file_exists($file))) {
+        if (!$file || (is_string($file) && !file_exists($file ?? ''))) {
             // no file
             return '';
         }
 
-        $fileName = $file instanceof File ? $file->getFilename() : basename($file);
+        $fileName = $file instanceof File ? $file->getFilename() : basename($file ?? '');
         $client = $this->getHttpClient();
 
         // Get and validate base URL
@@ -121,7 +121,7 @@ class SolrCellTextExtractor extends FileTextExtractor
         }
 
         try {
-            $stream = $file instanceof File ? $file->getStream() : fopen($file, 'r');
+            $stream = $file instanceof File ? $file->getStream() : fopen($file ?? '', 'r');
             /** @var Response $response */
             $response = $client
                 ->post($baseUrl, [
@@ -154,7 +154,7 @@ class SolrCellTextExtractor extends FileTextExtractor
         $matches = [];
         // Use preg match to avoid SimpleXML running out of memory on large text nodes
         preg_match(
-            sprintf('/\<str name\="%s"\>(.*?)\<\/str\>/s', preg_quote($fileName)),
+            sprintf('/\<str name\="%s"\>(.*?)\<\/str\>/s', preg_quote($fileName ?? '')),
             (string)$response->getBody(),
             $matches
         );

src/Extractor/TikaServerTextExtractor.php

@@ -86,7 +86,7 @@ class TikaServerTextExtractor extends FileTextExtractor
     {
         return $this->getServerEndpoint()
             && $this->getClient()->isAvailable()
-            && version_compare($this->getVersion(), '1.7') >= 0;
+            && version_compare($this->getVersion() ?? '', '1.7') >= 0;
     }
 
     /**
@@ -116,7 +116,7 @@ class TikaServerTextExtractor extends FileTextExtractor
 
         // Check aliases
         foreach ($this->supportedMimes as $info) {
-            if (isset($info['alias']) && in_array($mime, $info['alias'])) {
+            if (isset($info['alias']) && in_array($mime, $info['alias'] ?? [])) {
                 return true;
             }
         }
@@ -130,7 +130,7 @@ class TikaServerTextExtractor extends FileTextExtractor
         $content = $this->getClient()->tika($tempFile);
         //Cleanup temp file
         if ($file instanceof File) {
-            unlink($tempFile);
+            unlink($tempFile ?? '');
         }
         return $content;
     }

src/Extractor/TikaTextExtractor.php

@@ -29,7 +29,7 @@ class TikaTextExtractor extends FileTextExtractor
         $code = $this->runShell('tika --version', $stdout);
 
         // Parse output
-        if (!$code && preg_match('/Apache Tika (?<version>[\.\d]+)/', $stdout, $matches)) {
+        if (!$code && preg_match('/Apache Tika (?<version>[\.\d]+)/', $stdout ?? '', $matches)) {
             return $matches['version'];
         }
 
@@ -54,14 +54,14 @@ class TikaTextExtractor extends FileTextExtractor
         ];
         // Invoke command
         $pipes = [];
-        $proc = proc_open($command, $descriptorSpecs, $pipes);
+        $proc = proc_open($command ?? '', $descriptorSpecs ?? [], $pipes);
 
         if (!is_resource($proc)) {
             return 255;
         }
 
         // Send content as input
-        fwrite($pipes[0], $input);
+        fwrite($pipes[0], $input ?? '');
         fclose($pipes[0]);
 
         // Get output
@@ -78,11 +78,11 @@ class TikaTextExtractor extends FileTextExtractor
     {
         $mode = $this->config()->get('output_mode');
         $path = $file instanceof File ? $this->getPathFromFile($file) : $file;
-        $command = sprintf('tika %s %s', $mode, escapeshellarg($path));
+        $command = sprintf('tika %s %s', $mode, escapeshellarg($path ?? ''));
         $code = $this->runShell($command, $output);
         //Cleanup temp file
         if ($file instanceof File) {
-            unlink($path);
+            unlink($path ?? '');
         }
 
         if ($code == 0) {
@@ -123,8 +123,8 @@ class TikaTextExtractor extends FileTextExtractor
         }
 
         // Check if the mime type is inside the result
-        $pattern = sprintf('/\b(%s)\b/', preg_quote($mime, '/'));
+        $pattern = sprintf('/\b(%s)\b/', preg_quote($mime ?? '', '/'));
 
-        return (bool)preg_match($pattern, $supportedTypes);
+        return (bool)preg_match($pattern ?? '', $supportedTypes ?? '');
     }
 }

src/Rest/TikaRestClient.php

@@ -80,7 +80,7 @@ class TikaRestClient extends Client
 
         // Parse output
         if ($response->getStatusCode() == 200
-            && preg_match('/Apache Tika (?<version>[\.\d]+)/', $response->getBody(), $matches)
+            && preg_match('/Apache Tika (?<version>[\.\d]+)/', $response->getBody() ?? '', $matches)
         ) {
             $version = $matches['version'];
         }
@@ -129,7 +129,7 @@ class TikaRestClient extends Client
                     'headers' => [
                         'Accept' => 'text/plain',
                     ],
-                    'body' => file_get_contents($file),
+                    'body' => file_get_contents($file ?? ''),
                 ])
             );
             $text = $response->getBody();