blockmap - npm Package Compare versions

Comparing version 3.3.0 to 3.4.0

CHANGELOG.md

@@ -7,2 +7,6 @@ # Change Log
 
+## v3.4.0 - 2018-05-30
+
+* Feat(read-stream): Add a generateChecksums option #51 [Alexis Svinartchouk]
+
 ## v3.3.0 - 2018-05-30
@@ -9,0 +13,0 @@

lib/read-stream.js

@@ -19,2 +19,3 @@ var stream = require( 'stream' )
  * @param {Boolean} [options.verify=true] - verify range checksums
+ * @param {Boolean} [options.generateChecksums=false] - calculate range checksums and update blockmap
  * @param {Boolean} [options.autoClose=true] - close the fd on end
@@ -60,2 +61,10 @@ * @param {Number} [options.start] - byte offset in file to read from
     !!options.verify : true
+  /** @type {Boolean} Whether or not to calculate range checksums and update blockmap */
+  this.generateChecksums = options.generateChecksums != null ?
+    !!options.generateChecksums : false
+
+  if (this.verify && this.generateChecksums) {
+    throw new Error( 'verify and generateChecksums options are mutually exclusive' )
+  }
+
   /** @type {BlockMap.Range} Range being currently processed */
@@ -98,3 +107,3 @@ this.currentRange = null
    */
-  this._hash = this.verify ?
+  this._hash = ( this.verify || this.generateChecksums ) ?
     crypto.createHash( this.blockMap.checksumType ) : null
@@ -152,3 +161,3 @@
 
-    var needsVerify = this.verify &&
+    var needsVerify = ( this.verify || this.generateChecksums ) &&
       this.currentRange != null &&
@@ -168,3 +177,3 @@ this.currentRange.offset === this.currentRange.length
 
-    if( range.checksum !== digest ) {
+    if( this.verify && ( range.checksum !== digest ) ) {
       error = new Error( `Invalid checksum for range [${range.startLBA},${range.endLBA}], bytes ${range.start}-${range.end}` )
@@ -176,3 +185,7 @@ error.checksum = digest
 
-    this.rangesVerified++
+    if( this.generateChecksums ) {
+      range.range.checksum = digest
+    } else {
+      this.rangesVerified++
+    }
 
@@ -220,3 +233,3 @@ },
       // Feed the hash if we're verifying
-      if( this.verify ) {
+      if( this.verify || this.generateChecksums ) {
         this._hash.update( chunk.buffer )
@@ -223,0 +236,0 @@ }

package.json

 {
   "name": "blockmap",
-  "version": "3.3.0",
+  "version": "3.4.0",
   "description": "Tizen's block map format",
@@ -5,0 +5,0 @@ "license": "MIT",

No alert changes

Improved metrics

Total package byte prevSize

43639

increased by1.71%

Lines of code

978

increased by1.14%

No dependency changes