1 files changed, 35 insertions, 27 deletions
diff --git a/vendor/sabre/http/lib/Sapi.php b/vendor/sabre/http/lib/Sapi.php
index f8e8397fc..823d5df25 100644
--- a/vendor/sabre/http/lib/Sapi.php
+++ b/vendor/sabre/http/lib/Sapi.php
@@ -26,7 +26,7 @@ use InvalidArgumentException;
  * * php://output
  *
  * You can choose to either call all these methods statically, but you can also
- * instantiate this as an object to allow for polymorphism.
+ * instantiate this as an object to allow for polymorhpism.
  *
  * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
  * @author Evert Pot (http://evertpot.com/)
@@ -89,33 +89,41 @@ class Sapi
         if (null !== $contentLength) {
             $output = fopen('php://output', 'wb');
             if (is_resource($body) && 'stream' == get_resource_type($body)) {
-                // a workaround to make PHP more possible to use mmap based copy, see https://github.com/sabre-io/http/pull/119
-                $left = (int) $contentLength;
-                // copy with 4MiB chunks
-                $chunk_size = 4 * 1024 * 1024;
-                stream_set_chunk_size($output, $chunk_size);
-                // If this is a partial response, flush the beginning bytes until the first position that is a multiple of the page size.
-                $contentRange = $response->getHeader('Content-Range');
-                // Matching "Content-Range: bytes 1234-5678/7890"
-                if (null !== $contentRange && preg_match('/^bytes\s([0-9]+)-([0-9]+)\//i', $contentRange, $matches)) {
-                    // 4kB should be the default page size on most architectures
-                    $pageSize = 4096;
-                    $offset = (int) $matches[1];
-                    $delta = ($offset % $pageSize) > 0 ? ($pageSize - $offset % $pageSize) : 0;
-                    if ($delta > 0) {
-                        $left -= stream_copy_to_stream($body, $output, min($delta, $left));
+                if (PHP_INT_SIZE > 4) {
+                    // use the dedicated function on 64 Bit systems
+                    // a workaround to make PHP more possible to use mmap based copy, see https://github.com/sabre-io/http/pull/119
+                    $left = (int) $contentLength;
+                    // copy with 4MiB chunks
+                    $chunk_size = 4 * 1024 * 1024;
+                    stream_set_chunk_size($output, $chunk_size);
+                    // If this is a partial response, flush the beginning bytes until the first position that is a multiple of the page size.
+                    $contentRange = $response->getHeader('Content-Range');
+                    // Matching "Content-Range: bytes 1234-5678/7890"
+                    if (null !== $contentRange && preg_match('/^bytes\s([0-9]+)-([0-9]+)\//i', $contentRange, $matches)) {
+                        // 4kB should be the default page size on most architectures
+                        $pageSize = 4096;
+                        $offset = (int) $matches[1];
+                        $delta = ($offset % $pageSize) > 0 ? ($pageSize - $offset % $pageSize) : 0;
+                        if ($delta > 0) {
+                            $left -= stream_copy_to_stream($body, $output, min($delta, $left));
+                        }
                     }
-                }
-                while ($left > 0) {
-                    $copied = stream_copy_to_stream($body, $output, min($left, $chunk_size));
-                    // stream_copy_to_stream($src, $dest, $maxLength) must return the number of bytes copied or false in case of failure
-                    // But when the $maxLength is greater than the total number of bytes remaining in the stream,
-                    // It returns the negative number of bytes copied
-                    // So break the loop in such cases.
-                    if ($copied <= 0) {
-                        break;
+                    while ($left > 0) {
+                        $copied = stream_copy_to_stream($body, $output, min($left, $chunk_size));
+                        // stream_copy_to_stream($src, $dest, $maxLength) must return the number of bytes copied or false in case of failure
+                        // But when the $maxLength is greater than the total number of bytes remaining in the stream,
+                        // It returns the negative number of bytes copied
+                        // So break the loop in such cases.
+                        if ($copied <= 0) {
+                            break;
+                        }
+                        $left -= $copied;
+                    }
+                } else {
+                    // workaround for 32 Bit systems to avoid stream_copy_to_stream
+                    while (!feof($body)) {
+                        fwrite($output, fread($body, 8192));
                     }
-                    $left -= $copied;
                 }
             } else {
                 fwrite($output, $body, (int) $contentLength);
@@ -207,7 +215,7 @@ class Sapi
                         // Normalizing it to be prettier
                         $header = strtolower(substr($key, 5));
 
-                        // Transforming dashes into spaces, and upper-casing
+                        // Transforming dashes into spaces, and uppercasing
                         // every first letter.
                         $header = ucwords(str_replace('_', ' ', $header));