i-dont-know fixture

Co-authored-by: Eli Smith <eli@wavv.com>

constants.js

@@ -1,7 +1,4 @@
-try {
-  module.exports = require('fs').constants
-} catch {
-  module.exports = { // just for envs without fs
+const constants = { // just for envs without fs
   S_IFMT: 61440,
   S_IFDIR: 16384,
   S_IFCHR: 8192,
@@ -9,4 +6,9 @@ try {
   S_IFIFO: 4096,
   S_IFLNK: 40960
 }
+
+try {
+  module.exports = require('fs').constants || constants
+} catch {
+  module.exports = constants
 }

extract.js

@@ -72,6 +72,9 @@ class Source extends Readable {
   }
 
   _read (cb) {
+    if (this.header.size === 0) {
+      this.push(null)
+    }
     if (this._parent._stream === this) {
       this._parent._update()
     }
@@ -160,9 +163,7 @@ class Extract extends Writable {
     this._applyLongHeaders()
 
     if (this._header.size === 0 || this._header.type === 'directory') {
-      const stream = this._createStream()
-      stream.push(null)
-      this.emit('entry', this._header, stream, this._unlockBound)
+      this.emit('entry', this._header, this._createStream(), this._unlockBound)
       return true
     }
 

pack.js

@@ -11,7 +11,7 @@ const END_OF_TAR = b4a.alloc(1024)
 
 class Sink extends Writable {
   constructor (pack, header, callback) {
-    super({ mapWritable })
+    super({ mapWritable, eagerOpen: true })
 
     this.written = 0
     this.header = header
@@ -49,6 +49,10 @@ class Sink extends Writable {
       this._pack._encode(this.header)
     }
 
+    if (this._isVoid) {
+      this._finish()
+    }
+
     cb(null)
   }
 
@@ -67,7 +71,10 @@ class Sink extends Writable {
     this._pack._drain = cb
   }
 
-  _final (cb) {
+  _finish () {
+    if (this._finished) return
+    this._finished = true
+
     if (this._isLinkname) {
       this.header.linkname = this._linkname ? b4a.toString(this._linkname, 'utf-8') : ''
       this._pack._encode(this.header)
@@ -75,13 +82,15 @@ class Sink extends Writable {
 
     overflow(this._pack, this.header.size)
 
+    this._pack._done(this)
+  }
+
+  _final (cb) {
     if (this.written !== this.header.size) { // corrupting tar
       return cb(new Error('Size mismatch'))
     }
 
-    this._pack._done(this)
-    this._finished = true
-
+    this._finish()
     cb(null)
   }
 
@@ -142,7 +151,6 @@ class Pack extends Readable {
     }
 
     if (sink._isVoid) {
-      sink.end()
       return sink
     }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tar-stream",
-  "version": "3.1.0",
+  "version": "3.1.4",
   "description": "tar-stream is a streaming tar parser and generator and nothing else. It operates purely using streams which means you can easily extract/parse tarballs without ever hitting the file system.",
   "main": "index.js",
   "files": [
@@ -24,6 +24,7 @@
   "homepage": "https://github.com/mafintosh/tar-stream",
   "dependencies": {
     "b4a": "^1.6.4",
+    "fast-fifo": "^1.2.0",
     "streamx": "^2.15.0"
   },
   "devDependencies": {

test/extract.js

@@ -251,7 +251,7 @@ test('pax', function (t) {
 })
 
 test('types', function (t) {
-  t.plan(3)
+  t.plan(5)
 
   const extract = tar.extract()
   let noEntries = false
@@ -283,6 +283,9 @@ test('types', function (t) {
     stream.on('data', function () {
       t.ok(false)
     })
+    stream.on('end', function () {
+      t.pass('ended')
+    })
     extract.once('entry', onlink)
     cb()
   }
@@ -306,6 +309,9 @@ test('types', function (t) {
     stream.on('data', function () {
       t.ok(false)
     })
+    stream.on('end', function () {
+      t.pass('ended')
+    })
     noEntries = true
     cb()
   }
@@ -670,6 +676,26 @@ test('gnu-incremental', function (t) {
   extract.end(fs.readFileSync(fixtures.GNU_INCREMENTAL_TAR))
 })
 
+test('i-dont-know', function (t) {
+  t.plan(1)
+  const extract = tar.extract()
+
+  extract.on('entry', function (header, stream, cb) {
+    console.debug(header.name)
+    stream.on('end', function () {
+      cb() // ready for next entry
+    })
+
+    stream.resume()
+  })
+
+  extract.on('finish', function () {
+    t.ok(true)
+  })
+
+  extract.end(fs.readFileSync(fixtures.I_DONT_KNOW))
+})
+
 test('v7 unsupported', function (t) { // correctly fails to parse v7 tarballs
   t.plan(1)
 

test/fixtures/.gitattributes

@@ -0,0 +1 @@
+i-dont-know.tgz filter=lfs diff=lfs merge=lfs -text

test/fixtures/index.js

@@ -25,3 +25,4 @@ exports.GNU_INCREMENTAL_TAR = path.join(__dirname, 'gnu-incremental.tar')
 exports.UNKNOWN_FORMAT = path.join(__dirname, 'unknown-format.tar')
 // Created using gnu tar: tar cf v7.tar --format v7 test.txt
 exports.V7_TAR = path.join(__dirname, 'v7.tar')
+exports.I_DONT_KNOW = path.join(__dirname, 'i-dont-know.tgz')