b4a - npm Package Compare versions

Comparing version 1.2.0 to 1.3.0

browser.js

@@ -5,2 +5,3 @@ const ascii = require('./lib/ascii')
 const utf8 = require('./lib/utf8')
+const utf16le = require('./lib/utf16le')
 
@@ -11,2 +12,4 @@ function codecFor (encoding) {
       return ascii
+    case 'base64':
+      return base64
     case 'hex':
@@ -18,4 +21,7 @@ return hex
       return utf8
-    case 'base64':
-      return base64
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return utf16le
     default:
@@ -225,2 +231,46 @@ throw new Error(`Unknown encoding: ${encoding}`)
 
+function swap (buffer, n, m) {
+  const i = buffer[n]
+  buffer[n] = buffer[m]
+  buffer[m] = i
+}
+
+function swap16 (buffer) {
+  const len = buffer.byteLength
+
+  if (len % 2 !== 0) throw new RangeError('Buffer size must be a multiple of 16-bits')
+
+  for (let i = 0; i < len; i += 2) swap(buffer, i, i + 1)
+
+  return buffer
+}
+
+function swap32 (buffer) {
+  const len = buffer.byteLength
+
+  if (len % 4 !== 0) throw new RangeError('Buffer size must be a multiple of 32-bits')
+
+  for (let i = 0; i < len; i += 4) {
+    swap(buffer, i, i + 3)
+    swap(buffer, i + 1, i + 2)
+  }
+
+  return buffer
+}
+
+function swap64 (buffer) {
+  const len = buffer.byteLength
+
+  if (len % 8 !== 0) throw new RangeError('Buffer size must be a multiple of 64-bits')
+
+  for (let i = 0; i < len; i += 8) {
+    swap(buffer, i, i + 7)
+    swap(buffer, i + 1, i + 6)
+    swap(buffer, i + 2, i + 5)
+    swap(buffer, i + 3, i + 4)
+  }
+
+  return buffer
+}
+
 function toBuffer (buffer) {
@@ -274,2 +324,5 @@ return buffer
   from,
+  swap16,
+  swap32,
+  swap64,
   toBuffer,
@@ -276,0 +329,0 @@ toString,

index.js

@@ -45,2 +45,14 @@ function isBuffer (value) {
 
+function swap16 (buffer) {
+  return toBuffer(buffer).swap16()
+}
+
+function swap32 (buffer) {
+  return toBuffer(buffer).swap32()
+}
+
+function swap64 (buffer) {
+  return toBuffer(buffer).swap64()
+}
+
 function toBuffer (buffer) {
@@ -71,2 +83,5 @@ if (Buffer.isBuffer(buffer)) return buffer
   from,
+  swap16,
+  swap32,
+  swap64,
   toBuffer,
@@ -73,0 +88,0 @@ toString,

package.json

 {
   "name": "b4a",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "Bridging the gap between buffers and typed arrays",
@@ -5,0 +5,0 @@ "main": "index.js",

README.md

@@ -71,2 +71,14 @@ # Buffer for Array
 
+#### `b4a.swap16()`
+
+See https://nodejs.org/api/buffer.html#bufswap16
+
+#### `b4a.swap32()`
+
+See https://nodejs.org/api/buffer.html#bufswap32
+
+#### `b4a.swap64()`
+
+See https://nodejs.org/api/buffer.html#bufswap64
+
 #### `b4a.toBuffer(buffer)`
@@ -73,0 +85,0 @@

New alerts

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License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

29552

increased by10.58%

Number of package files

27

increased by3.85%

Lines of code

950

increased by12.03%

Number of lines in readme file

98

increased by13.95%

No dependency changes