binary-parser - npm Package Compare versions

Comparing version 0.0.3 to 0.0.4

lib/binary_parser.js

@@ -27,3 +27,4 @@ //========================================================================================
     'Skip'     : null,
-    'Choice'   : null
+    'Choice'   : null,
+    'Nest'     : null
 };
@@ -134,2 +135,13 @@
 
+Parser.prototype.nest = function(varName, options) {
+    if (!options.type) {
+        throw new Error('Type option of nest is not defined.');
+    }
+    if (!(options.type instanceof Parser)) {
+        throw new Error('Type option of nest must be a Parser object.');
+    }
+
+    return this.setNextParser('nest', varName, options);
+};
+
 Parser.prototype.endianess = function(endianess) {
@@ -396,2 +408,9 @@ if (endianess !== 'little' && endianess !== 'big') {
 
+Parser.prototype.generateNest = function(ctx) {
+    ctx.pushCode('{0} = {};', ctx.generateVariable(this.varName));
+    ctx.scopes.push(this.varName);
+    this.options.type.generate(ctx);
+    ctx.scopes.pop();
+};
+
 //========================================================================================
@@ -398,0 +417,0 @@ // class Context

package.json

 {
   "name": "binary-parser",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "Blazing-fast binary parser builder",
@@ -5,0 +5,0 @@ "main": "lib/binary_parser.js",

README.md

@@ -171,2 +171,8 @@ # Binary-parser
 
+### nest(name [,options])
+Nest a parser in this position. Parse result of the nested parser is stored in the variable
+`name`.
+
+- `type` - (Required) A `Parser` object.
+
 ### skip(length)
@@ -173,0 +179,0 @@ Skip parsing for `length` bytes.

test/jpg.js

@@ -107,3 +107,4 @@ var fs = require('fs');
     it('should parse JPG file header', function() {
-        fs.readFile('test/kindle.jpg', function(err, data) {
+        fs.readFile('test/test.jpg', function(err, data) {
+
             JPEG.parse(data).segments.forEach(function(item) {
@@ -116,6 +117,6 @@ if (item.marker === 0xffd8) {
                         id: 'JFIF',
-                        version: 257,
-                        unit: 1,
-                        xDensity: 72,
-                        yDensity: 72,
+                        version: 258,
+                        unit: 0,
+                        xDensity: 100,
+                        yDensity: 100,
                         thumbWidth: 0,
@@ -125,15 +126,2 @@ thumbHeight: 0,
                     });
-                } else if (item.marker === 0xffc0) {
-                    assert.deepEqual(item.segment, {
-                        length: 17,
-                        precision: 8,
-                        width: 1024,
-                        height: 768,
-                        componentCount: 3,
-                        components: [
-                            { id: 1, samplingFactor: 34, quantizationTableId: 0 },
-                            { id: 2, samplingFactor: 17, quantizationTableId: 1 },
-                            { id: 3, samplingFactor: 17, quantizationTableId: 1 }
-                        ]
-                    });
                 } else if (item.marker === 0xffda) {
@@ -149,3 +137,3 @@ assert.deepEqual(item.segment, {
                         spectrumStart: 0,
-                        spectrumEnd: 63,
+                        spectrumEnd: 0,
                         spectrumSelect: 0
@@ -152,0 +140,0 @@ });

test/test.js

@@ -296,2 +296,34 @@ var assert = require('assert');
 
+    describe('Nest parser', function() {
+        it('should parse nested parsers', function() {
+            var nameParser = new Parser()
+                .string('firstName', {
+                    zeroTerminated: true
+                })
+                .string('lastName', {
+                    zeroTerminated: true
+                });
+            var infoParser = new Parser()
+                .uint8('age');
+            var personParser = new Parser()
+                .nest('name', {
+                    type: nameParser
+                })
+                .nest('info', {
+                    type: infoParser
+                });
+
+            var buffer = Buffer.concat([new Buffer('John\0Doe\0'), new Buffer([0x20])]);
+            assert.deepEqual(personParser.parse(buffer), {
+                name: {
+                    firstName: 'John',
+                    lastName: 'Doe'
+                },
+                info: {
+                    age: 0x20
+                }
+            });
+        });
+    });
+
     describe('Utilities', function() {
@@ -298,0 +330,0 @@ it('should count size for fixed size structs', function() {

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Found 1 instance in 1 package

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Supply chain risk

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

Found 1 instance in 1 package

Fixed alerts

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Improved metrics

Number of package files

13

increased by18.18%

Lines of code

1101

increased by11.55%

Number of lines in readme file

252

increased by2.44%

Worsened metrics

Total package byte prevSize

99335

decreased by-63.82%

Number of low supply chain risk alerts

3

increased by50%

Number of medium supply chain risk alerts

1

increased byInfinity%

No dependency changes