binpack - npm Package Compare versions

Comparing version 0.0.14 to 0.1.0

index.js

@@ -1,1 +0,92 @@
-module.exports = require('bindings')('binpack.node')
+// t is a binpack typename
+var sizeOfType = function(t) {
+    // unsigned are the same length as signed
+    if(t[0] === 'U') {
+        t = t.slice(1);
+    }
+
+    return {
+        'Float32' : 4,
+        'Float64' : 8,
+        'Int8' : 1,
+        'Int16' : 2,
+        'Int32' : 4,
+        'Int64' : 8
+    }[t];
+};
+
+var endianConv = function(e, t) {
+    // node doesn't define 8 bit endianness
+    if(t[t.length - 1] === '8')
+        return '';
+
+    if(e === 'big') {
+        return 'BE';
+    }
+    return 'LE';
+};
+
+var addBindings = function(binpackTypename, nodeTypename){
+    if(!(typeof nodeTypename !== "undefined" && nodeTypename !== null)) {
+        nodeTypename = binpackTypename;
+    }
+    module.exports['pack' + binpackTypename] = function(num, endian){
+        b = new Buffer(sizeOfType(binpackTypename));
+        b['write' + nodeTypename + endianConv(endian, binpackTypename)](num, 0, true);
+        return b;
+    }
+
+    module.exports['unpack' + binpackTypename] = function(buff, endian){
+        return buff['read' + nodeTypename + endianConv(endian, binpackTypename)](0);
+    }
+}
+
+var addIntBindings = function(n) {
+    addBindings("Int" + n);
+    addBindings("UInt" + n);
+}
+
+addIntBindings(8);
+addIntBindings(16);
+addIntBindings(32);
+
+twoToThe32 = Math.pow(2, 32);
+
+// 64 bit bindings require special care
+var read64 = function(unsigned){return function(buff, endian){
+    var e = endianConv(endian, '');
+    var u = unsigned ? 'U' : '';
+    var low, high;
+    if(e === 'LE') {
+        low = buff.readUInt32LE(0);
+        high = buff['read' + u + 'Int32LE'](4);
+    } else {
+        low = buff.readUInt32BE(4);
+        high = buff['read' + u + 'Int32BE'](0);
+    }
+    return high * twoToThe32 + low;
+};};
+
+var write64 = function(unsigned){return function(num, endian){
+    var e = endianConv(endian, '');
+    var u = unsigned ? 'U' : '';
+    var b = new Buffer(8);
+    var high = Math.floor(num / twoToThe32);
+    var low = Math.floor(num - high * twoToThe32);
+    if(e == 'LE') {
+        b.writeUInt32LE(low, 0, true);
+        b['write' + u + 'Int32LE'](high, 4, true);
+    } else {
+        b.writeUInt32BE(low, 4, true);
+        b['write' + u + 'Int32BE'](high, 0, true);
+    }
+    return b;
+};};
+
+module.exports.unpackInt64 = read64(false);
+module.exports.unpackUInt64 = read64(true);
+module.exports.packInt64 = write64(false);
+module.exports.packUInt64 = write64(true);
+
+addBindings("Float32", "Float");
+addBindings("Float64", "Double");

package.json

 {
    "name": "binpack",
-   "version": "0.0.14",
-   "main": "binpack",
+   "version": "0.1.0",
+   "main": "index",
    "author": {
        "name" : "Russell McClellan",
        "email": "[e-mail]",
-       "url" : "http://www.ghostfact.com"
+       "url" : "http://www.russellmcc.com"
    },
@@ -18,17 +18,10 @@ "description": "Minimalist numeric binary packing utilities for node.js",
        "type": "git",
-       "url": "http://github.com/russellmcc/node-binpack.git" 
+       "url": "http://github.com/russellmcc/node-binpack.git"
    },
    "dependencies" : {
-       "bindings" : "*"
    },
    "devDependencies" : {
        "vows" : "*",
-       "coffee-script" : "*"
+       "coffee-script" : "<1.7.0"
    },
-   "directories": {
-       "src": "src"
-   },
-   "engines": {
-       "node": ">=0.6.0"
-   },
    "scripts": {
@@ -35,0 +28,0 @@ "test" : "vows tests/*"

readme.md

@@ -0,8 +1,9 @@
+[![build status](https://secure.travis-ci.org/russellmcc/node-binpack.png)](http://travis-ci.org/russellmcc/node-binpack)
 # binpack
 
-_Minimalist numeric binary packing utilities for node.js_
+_Deprecated binary packing utilities for node.js_
 
 ## What's all this?
 
-This is an intentionally simple binary packing/unpacking package for node.js for programmers who prefer to write most of their parsing code in javascript.  This exposes some common binary formats for numbers.
+node now actually contains native code for packing binary buffers so this module is no longer needed.  do not use in new code.
 
@@ -20,7 +21,5 @@ see the included COPYING file for licensing.
     Int32
-    Int64
     UInt8 
     UInt16
     UInt32
-    UInt64
     
@@ -31,6 +30,2 @@ Each `pack*` function takes a javascript number and outputs a node.js Buffer.
 
-Both types of functions take an optional second argument.  If this argument is `"big"`, the output is put in big endian format.  If the argument is `"little"`, the output is put in little endian format.  If the argument is anything else or non-existent, we default to your machine's native encoding.
-
-## How is this different than the `binary` module on npm?
-
-It contains floating point values, and it has packing functions
+Both types of functions take an optional second argument.  If this argument is `"big"`, the output is put in big endian format.  If the argument is `"little"`, the output is put in little endian format.  If the argument is anything else or non-existent, we default to "little" endian [THIS IS NEW BEHAVIOR IN 0.0.15 - previous version would default to the native encoding.].

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Native code

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Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

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Improved metrics

Dependency count

0

decreased by-100%

Lines of code

80

increased byInfinity%

Number of medium quality alerts

1

decreased by-50%

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0

decreased by-100%

Worsened metrics

Total package byte prevSize

7936

decreased by-23.2%

Number of package files

8

decreased by-20%

Number of lines in readme file

30

decreased by-11.76%

Dependency changes

• - Removedbindings@*

• - Removedbindings@1.5.0(transitive)

• - Removedfile-uri-to-path@1.0.0(transitive)