hdjs
Version:
hdjs framework
258 lines (203 loc) • 8.49 kB
JavaScript
/*
* grunt-contrib-concat
* http://gruntjs.com/
*
* Copyright (c) 2013 "Cowboy" Ben Alman, contributors
* Licensed under the MIT license.
*/
;
module.exports = function(grunt) {
var path = require('path');
function stripBanner(src, options) {
if (!options) {
options = {};
}
var m = [];
if (options.line) {
// Strip // ... leading banners.
m.push('(?:.*\\/\\/.*\\r?\\n)*\\s*');
}
if (options.block) {
// Strips all /* ... */ block comment banners.
m.push('\\/\\*[\\s\\S]*?\\*\\/');
} else {
// Strips only /* ... */ block comment banners, excluding /*! ... */.
m.push('\\/\\*[^!][\\s\\S]*?\\*\\/');
}
var re = new RegExp('^\\s*(?:' + m.join('|') + ')\\s*', '');
return src.replace(re, '');
}
var intro = path.join(__dirname, '../intro.js');
var outro = path.join(__dirname, '../outro.js');
// 排序，把依赖的文件移动到最上面。
function filesFilter( f, files ) {
var cwd = f.cwd || '',
ret = [],
process = function( file ) {
var fileinfo = path.join( cwd, file ),
dirpath = path.dirname( fileinfo ),
depends = [],
str, matches, idx;
if ( !grunt.file.exists( fileinfo ) ) {
return;
}
ret.push( file );
str = grunt.file.read( fileinfo );
// 从require( dps )中找
// 从defind( id?, dps, factory )中找
str = str.replace( /(?:define|require)\s*\(\s*\[([^\]]+?)\],/g, function( _, m1 ) {
m1 = m1.replace(/\s/g, '').split(',');
depends = depends.concat( m1.map(function( item ) {
item = item.substring( 1, item.length - 1 );
item = item.substring(0, 1) === '.' ?
path.join( dirpath, item ):
path.join( cwd, item );
return path.relative( cwd, item ) + '.js';
}) );
return _;
});
str = str.replace( /require\s*\(\s*('|")(.+?)\1/g, function( _, m1, item ) {
item = item.substring(0, 1) === '.' ?
path.join( dirpath, item ):
path.join( cwd, item );
depends.push( path.relative( cwd, item ) + '.js' );
return _;
});
if ( depends.length ) {
depends = depends.filter(function( item, idx, array ) {
return array.indexOf( item ) === idx && grunt.file.exists( path.join( cwd, item ) );
});
idx = ret.indexOf( file );
[].splice.apply( ret, [ idx, 0 ].concat( depends ) );
depends.forEach( process );
}
};
// console.log( files );
files.forEach( process );
ret = ret.filter(function( item, idx, arr ){
return idx === arr.indexOf( item );
});
ret.unshift( path.relative( cwd, intro ) );
ret.push( path.relative( cwd, outro ) );
return ret;
}
// 缓存版本号
var version;
function fileProcess( src, filepath, cwd ) {
var dirpath = path.dirname( filepath );
version = version || grunt.config.get('pkg.version');
src = src.replace( /@version@/g, version );
// 不处理 outro.js
if (filepath.indexOf('outro') >= 0) {
return src;
}
// console.log( filepath, cwd );
// 处理 define( dps ?, factory );
// 处理 require( dps );
src = src.replace( /(define|require)\s*\((?:\s*\[([^\]]+)\],)?/g, function( _, m1, m2 ) {
var str = m1 + '(',
item;
if ( m1 === 'define' ) {
item = path.relative( cwd, filepath );
item = item.substring( 0, item.length - 3 );
str += ' \'' + item.replace(/\\/g, '/') + '\', ';
}
if ( m2 ) {
m2 = m2.replace(/\s/g, '').split(',');
m2 = m2.map(function( item ) {
var _file = item;
_file = _file.substring( 1, _file.length - 1 );
_file = _file.substring(0, 1) === '.' ?
path.join( dirpath, _file ) :
path.join( cwd, _file.substring( 1 ) );
if ( !grunt.file.exists( _file + '.js' ) ) {
return item;
}
_file = path.relative( cwd, _file );
return '\'' + _file.replace(/\\/g, '/').toLowerCase() + '\'';
});
if ( m2.length ) {
str += '[\n ' + m2.join(',\n ') + '\n],';
} else {
str += '[],';
}
}
// console.log( str );
return str;
});
// 处理 require( id );
src = src.replace( /require\s*\(\s*('|")(.+?)\1\s*\)/g, function( _, m1, m2 ) {
var _file = m2;
_file = _file.substring(0, 1) === '.' ?
path.join( dirpath, _file ) :
path.join( cwd, _file.substring( 1 ) );
if ( !grunt.file.exists( _file + '.js' ) ) {
return _;
}
_file = path.relative( cwd, _file );
return 'require(\'' + _file + '\')';
});
return src;
}
grunt.registerMultiTask('concat', 'Concatenate files.', function() {
// Merge task-specific and/or target-specific options with these defaults.
var options = this.options({
separator: grunt.util.linefeed,
banner: '',
footer: '',
stripBanners: false,
process: null,
filesFilter: filesFilter
});
// Normalize boolean options that accept options objects.
if (options.stripBanners === true) {
options.stripBanners = {};
}
if (options.process === true) {
options.process = {};
}
// Process banner and footer.
var banner = grunt.template.process(options.banner);
var footer = grunt.template.process(options.footer);
// Iterate over all src-dest file pairs.
this.files.forEach(function(f) {
var files = f.src;
if (typeof options.filesFilter === 'function') {
files = options.filesFilter( f, files );
}
// Concat banner + specified files + footer.
var cwd = f.cwd || '',
src = banner + files.filter(function(filepath) {
filepath = path.join( cwd, filepath );
// Warn on and remove invalid source files (if nonull was set).
if (!grunt.file.exists(filepath)) {
grunt.log.warn('Source file "' + filepath + '" not found.');
return false;
} else {
return true;
}
}).map(function(filepath) {
filepath = path.join( cwd, filepath );
// Read file source.
var src = grunt.file.read(filepath);
// 文件处理，用来支持amdefine
src = fileProcess( src, filepath, cwd );
// Process files as templates if requested.
if (typeof options.process === 'function') {
src = options.process(src, filepath);
} else if (options.process) {
src = grunt.template.process(src, options.process);
}
// Strip banners if requested.
if (options.stripBanners) {
src = stripBanner(src, options.stripBanners);
}
return src;
}).join(options.separator) + footer;
// Write the destination file.
grunt.file.write(f.dest, src);
// Print a success message.
grunt.log.writeln('File "' + f.dest + '" created.');
});
});
};