memory-pager - npm Package Compare versions

Comparing version 1.1.0 to 1.2.0

index.js

 module.exports = Pager
 
-function Pager (pageSize) {
-  if (!(this instanceof Pager)) return new Pager(pageSize)
+function Pager (pageSize, opts) {
+  if (!(this instanceof Pager)) return new Pager(pageSize, opts)
 
@@ -10,2 +10,3 @@ this.length = 0
   this.pageSize = pageSize || 1024
+  this.deduplicate = opts ? opts.deduplicate : null
 }
@@ -39,2 +40,6 @@
 
+  if (page && page.buffer === this.deduplicate && this.deduplicate && !noAllocate) {
+    page.buffer = copy(page.buffer)
+  }
+
   return page
@@ -52,2 +57,7 @@ }
 
+  if (this.deduplicate && buf.equals && buf.equals(this.deduplicate)) {
+    buf = this.deduplicate
+    return
+  }
+
   var page = this.pages[i]
@@ -95,2 +105,8 @@ var b = truncate(buf, this.pageSize)
 
+function copy (buf) {
+  var cpy = Buffer.allocUnsafe ? Buffer.allocUnsafe(buf.length) : new Buffer(buf.length)
+  buf.copy(cpy)
+  return cpy
+}
+
 function Page (i, buf) {
@@ -97,0 +113,0 @@ this.offset = i * buf.length

package.json

 {
   "name": "memory-pager",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Access memory using small fixed sized buffers",
@@ -5,0 +5,0 @@ "main": "index.js",

README.md

 # memory-pager
 
 Access memory using small fixed sized buffers instead of allocating a huge buffer.
-Useful if you are implmenting sparse data structures (such as large bitfield).
+Useful if you are implementing sparse data structures (such as large bitfield).
 
@@ -6,0 +6,0 @@ ![travis](https://travis-ci.org/mafintosh/memory-pager.svg?branch=master)

No alert changes

Improved metrics

Total package byte prevSize

6940

increased by6.92%

Lines of code

144

increased by9.92%

No dependency changes