image-size - npm Package Compare versions

Comparing version 0.5.1 to 0.5.2

lib/index.js

@@ -42,2 +42,3 @@ 'use strict';
     var size = fs.fstatSync(descriptor).size;
+    if (size <= 0){return callback(new Error("File size is not greater than 0 —— " + filepath)); }
     var bufferSize = Math.min(size, MaxBufferSize);
@@ -44,0 +45,0 @@ var buffer = new Buffer(bufferSize);

lib/types/jpg.js

@@ -10,3 +10,2 @@ 'use strict';
   var SOIMarker = buffer.toString('hex', 0, 2);
-
   return ('ffd8' === SOIMarker);
@@ -35,3 +34,3 @@ }
 
-  // Skip 5 chars, they are for signature
+  // Skip 4 chars, they are for signature
   buffer = buffer.slice(4);
@@ -47,6 +46,7 @@
 
-    // 0xFFC0 is baseline(SOF)
+    // 0xFFC0 is baseline standard(SOF)
+    // 0xFFC1 is baseline optimized(SOF)
     // 0xFFC2 is progressive(SOF2)
     next = buffer[i + 1];
-    if (next === 0xC0 || next === 0xC2) {
+    if (next === 0xC0 || next === 0xC1 || next === 0xC2) {
       return extractSize(buffer, i + 5);
@@ -53,0 +53,0 @@ }

lib/types/png.js

 'use strict';
 
 var pngSignature = 'PNG\r\n\x1a\n';
+var pngImageHeaderChunkName = 'IHDR';
+var pngFriedChunkName = 'CgBI'; // Used to detect "fried" png's: http://www.jongware.com/pngdefry.html
+
 function isPNG (buffer) {
   if (pngSignature === buffer.toString('ascii', 1, 8)) {
-    if ('IHDR' !== buffer.toString('ascii', 12, 16)) {
+    var chunkName = buffer.toString('ascii', 12, 16);
+    if (chunkName === pngFriedChunkName) {
+      chunkName = buffer.toString('ascii', 28, 32);
+    }
+    if (chunkName !== pngImageHeaderChunkName) {
       throw new TypeError('invalid png');
@@ -14,2 +21,8 @@ }
 function calculate (buffer) {
+  if (buffer.toString('ascii', 12, 16) === pngFriedChunkName) {
+    return {
+      'width': buffer.readUInt32BE(32),
+      'height': buffer.readUInt32BE(36)
+    };
+  }
   return {
@@ -16,0 +29,0 @@ 'width': buffer.readUInt32BE(16),

package.json

 {
   "name": "image-size",
-  "version": "0.5.1",
+  "version": "0.5.2",
   "description": "get dimensions of any image file",
@@ -5,0 +5,0 @@ "main": "lib/index.js",

No alert changes

Improved metrics

Total package byte prevSize

18851

increased by3.45%

Lines of code

502

increased by2.87%

No dependency changes