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Landing pull request 523. Adds character frequency reporting tool, us…

…e: make freq. Fixes #10372.

More Details:
 - jquery#523
 - http://bugs.jquery.com/ticket/10372
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commit 9f5d56a8b5bdeb1186130f81e514982e089da7a2 1 parent 46219b5
@rwaldron rwaldron authored timmywil committed
Showing with 86 additions and 0 deletions.
  1. +7 −0 Makefile
  2. +79 −0 build/freq.js
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7 Makefile
@@ -83,6 +83,13 @@ size: jquery min
echo "You must have NodeJS installed in order to size jQuery."; \
fi
+freq: jquery min
+ @@if test ! -z ${JS_ENGINE}; then \
+ ${JS_ENGINE} ${BUILD_DIR}/freq.js; \
+ else \
+ echo "You must have NodeJS installed to report the character frequency of minified jQuery."; \
+ fi
+
min: jquery ${JQ_MIN}
${JQ_MIN}: ${JQ}
View
79 build/freq.js
@@ -0,0 +1,79 @@
+#! /usr/bin/env node
+
+var fs = require( "fs" );
+
+function isEmptyObject( obj ) {
+ for ( var name in obj ) {
+ return false;
+ }
+ return true;
+}
+function extend( obj ) {
+ var dest = obj,
+ src = [].slice.call( arguments, 1 );
+
+ Object.keys( src ).forEach(function( key ) {
+ var copy = src[ key ];
+
+ for ( var prop in copy ) {
+ dest[ prop ] = copy[ prop ];
+ }
+ });
+
+ return dest;
+};
+
+function charSort( obj, callback ) {
+
+ var ordered = [],
+ table = {},
+ copied;
+
+ copied = extend({}, obj );
+
+ (function order() {
+
+ var largest = 0,
+ c;
+
+ for ( var i in obj ) {
+ if ( obj[ i ] >= largest ) {
+ largest = obj[ i ];
+ c = i;
+ }
+ }
+
+ ordered.push( c );
+ delete obj[ c ];
+
+ if ( !isEmptyObject( obj ) ) {
+ order();
+ } else {
+ ordered.forEach(function( val ) {
+ table[ val ] = copied[ val ];
+ });
+
+ callback( table );
+ }
+
+ })();
+}
+function charFrequency( src, callback ) {
+ var obj = {};
+
+ src.replace(/[^\w]|\d/gi, "").split("").forEach(function( c ) {
+ obj[ c ] ? ++obj[ c ] : ( obj[ c ] = 1 );
+ });
+
+ return charSort( obj, callback );
+}
+
+
+charFrequency( fs.readFileSync( "dist/jquery.min.js", "utf8" ), function( obj ) {
+ var chr;
+
+ for ( chr in obj ) {
+ console.log( " " + chr + " " + obj[ chr ] );
+ }
+});
+
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