You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
2.0 KiB
JavaScript
56 lines
2.0 KiB
JavaScript
11 years ago
|
/**
|
||
|
|
* Idea taken from https://github.com/fpirsch/twin-bcrypt/blob/master/Gearfile.js
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
var fs = require('fs');
|
||
|
|
|
||
|
|
module.exports = function(grunt) {
|
||
|
|
grunt.registerTask('uglyasm', function() {
|
||
|
|
var code = fs.readFileSync('dist/quagga.js', 'utf-8'),
|
||
|
|
minifiedCode = fs.readFileSync('dist/quagga.min.js', 'utf-8'),
|
||
|
|
commentEnd = '/* @preserve ASM END */',
|
||
|
|
asmStartIdx = code.indexOf('/* @preserve ASM BEGIN */'),
|
||
|
|
asmEndIdx = code.indexOf(commentEnd),
|
||
|
|
asmCode = code.substring(asmStartIdx, asmEndIdx + commentEnd.length),
|
||
|
|
asmFunctionRegex = /function (\w+)\(\w+,\s*\w+,\s*\w+\)\s*\{\s*"use asm";/,
|
||
|
|
asmModule,
|
||
|
|
asmModuleName,
|
||
|
|
asmCodeMinified,
|
||
|
|
asmMinifiedModuleName;
|
||
|
|
|
||
|
|
asmCodeMinified = asmCode
|
||
|
|
.replace(/\s*\/\/.*/g, '') // remove single-line comments
|
||
|
|
.replace(/\s*\/\*[^]*?\*\//g, '') // remove multi-line comments
|
||
|
|
.replace(/\n\s*/g, '') // remove indentation
|
||
|
|
.replace(/ ([+=^|&]|>+|<+) /g, '$1') // remove spaces around operators
|
||
|
|
.replace(/[\r\n/]/g, ''); // remove new lines
|
||
|
|
|
||
|
|
grunt.log.debug(asmCodeMinified);
|
||
|
|
|
||
|
|
asmModule = asmCode.match(asmFunctionRegex);
|
||
|
|
if (!asmModule) {
|
||
|
|
grunt.log.error("No ASM module found");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
asmModuleName = asmModule[1];
|
||
|
|
grunt.log.debug(asmModuleName);
|
||
|
|
|
||
|
|
asmModule = minifiedCode.match(asmFunctionRegex);
|
||
|
|
if (!asmModule) {
|
||
|
|
grunt.log.error("No ASM module found in minified file");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
asmMinifiedModuleName = asmModule[1];
|
||
|
|
grunt.log.debug(asmMinifiedModuleName);
|
||
|
|
|
||
|
|
asmCodeMinified = asmCodeMinified.replace(asmModuleName, asmMinifiedModuleName);
|
||
|
|
|
||
|
|
minifiedCode = minifiedCode.replace(/\/\* @preserve ASM BEGIN \*\/[^]*?\/\* @preserve ASM END \*\//, asmCodeMinified);
|
||
|
|
fs.writeFileSync('dist/quagga.min.js', minifiedCode);
|
||
|
|
grunt.log.ok('dist/quagga.min.js written');
|
||
|
|
});
|
||
|
|
};
|