From 4aa2cb16a0b1d69a90079d6157bc94e37217bd55 Mon Sep 17 00:00:00 2001
From: Ziggy Jonsson <ziggy.jonsson.nyc@gmail.com>
Date: Tue, 3 Sep 2019 15:01:42 -0400
Subject: [PATCH 1/2] Fix: cases where file size is known (i.e. compressedSize
 > 0) but the fileSizeKnown flag is false

---
 lib/Open/unzip.js | 2 +-
 lib/parse.js      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/Open/unzip.js b/lib/Open/unzip.js
index 0136fb1..8739205 100644
--- a/lib/Open/unzip.js
+++ b/lib/Open/unzip.js
@@ -83,7 +83,7 @@ module.exports = function unzip(source,offset,_password, directoryVars) {
     });
 
     entry.vars.then(function(vars) {
-      var fileSizeKnown = !(vars.flags & 0x08),
+      var fileSizeKnown = !(vars.flags & 0x08) || vars.compressedSize > 0,
           eof;
 
       var inflater = vars.compressionMethod ? zlib.createInflateRaw() : Stream.PassThrough();
diff --git a/lib/parse.js b/lib/parse.js
index e2d675b..f050822 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -164,7 +164,7 @@ Parse.prototype._readFile = function () {
             extra: extra
           });
 
-        var fileSizeKnown = !(vars.flags & 0x08),
+        var fileSizeKnown = !(vars.flags & 0x08) || vars.compressedSize > 0,
             eof;
 
         entry.__autodraining = __autodraining;  // expose __autodraining for test purposes

From b6ebcd72e9b32fe9963a8dabae6010b315b67db8 Mon Sep 17 00:00:00 2001
From: Ziggy Jonsson <ziggy.jonsson.nyc@gmail.com>
Date: Tue, 3 Sep 2019 14:51:20 -0400
Subject: [PATCH 2/2] Only set the concurrency config if opts.concurrency is
 more than 1

---
 lib/Open/directory.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Open/directory.js b/lib/Open/directory.js
index ddbe097..afb26fa 100644
--- a/lib/Open/directory.js
+++ b/lib/Open/directory.js
@@ -162,7 +162,7 @@ module.exports = function centralDirectory(source, options) {
                 .on('close',resolve)
                 .on('error',reject);
             });
-          },{concurrency: opts.concurrency || 1});
+          }, opts.concurrency > 1 ? {concurrency: opts.concurrency || undefined} : undefined);
         });
       };