nyx_server/core/utils/UriResource.js

Node内容发布

/* global global */
var _ = require("lodash");
var path = require('path');
var projects_cache_path = global.nxyConfig.projects_cache_path;
/**
 * 资源转换
 */

function UriResource(){}

/**
 * 转换到cdn地址
 */
UriResource.prototype.transToCdnUrl = function(){

};

/**
 *
 */
UriResource.prototype.transformUrl = function(content , resourceBaseUrl){
    var workDir = global.nxyConfig.workDir;
    if(resourceBaseUrl.substring(0,projects_cache_path.length) == projects_cache_path){
        workDir = projects_cache_path;
    }
    content = commonReplace(content , resourceBaseUrl , workDir);
    return  requireReplace(content , resourceBaseUrl ,  workDir);
};


//普通替换
var commonReplace = function(content , resourceBaseUrl , workDir){
       var patterns = [
               /<a[^\>]+href=['"]([^"']+)["']/gi,
               /<link[^\>]+href=['"]([^"']+)["']/gi,
               /<img[^\>]+src=['"]?([^"']+)["']?/gi,
               /[\s|:]url\s*\(\s*([^\(\)]+)\s*\)/gi,
               /<script[^\>]+src=['"]([^"']+)["']/gi,
               /\(\s*src=['"]([^"']+)["']/gi
              ];
       patterns.forEach(function(regex){
           content = content.replace(regex , function(match , url , offset, string){
                var resloveUrl = path.join(resourceBaseUrl , url);
                if(!/^\s*http:\/\//i.test(url) && !/^\s*https:\/\//i.test(url) 
                    && !/\s*<%{1,2}[=|-]((?!%>).)*%>/g.test(url) 
                    && !/\s*{{((?!}}).)*}}/g.test(url) 
                    && !/^\s*javascript/i.test(url)
                    && (url.indexOf("/")!=0)){
                   var relativePath = path.relative(workDir,resloveUrl);
                   return match.replace(url, "/resources/"+relativePath).replace(/\\/g,"/");
                }else{
                   return match;
                }
           });
        });
        return content;
  };

  var  requireReplace = function(content , resourceBaseUrl , workDir){
        var contentBlocks = content.match(/requirejs.config(?:\r|\n|\s|\(\s*{)*paths(?:\r|\n|\s)*:(?:\r|\n|\s)*{([^}]*)}/gi); //得到paths的内容
        if(!contentBlocks){
           return content;
        }
        for(var i=0 ; i<contentBlocks.length ; i++){
            var block = contentBlocks[i];
            var arr = block.match(/["']+[^"']*["']+[\s]*:[\s]*["']+([^"']*)["']+/gi);
            if(typeof arr !== 'undefined'){
               for(var j=0 ; j<arr.length ; j++){
                   var c = arr[j];
                   var m = /["']+[^"']*["']+[\s]*:[\s]*(["']+([^"']*)["'])+/gi.exec(c);
                   var path1 = m[1]; //带引号的地址
                   var path2 = m[2]; //地址
                   var resloveUrl = path.join(resourceBaseUrl , path2);
                   if(!/^\s*http:\/\//i.test(path2) && /^\s*https:\/\//i.test(path2)
                       && !/\s*<%{1,2}[=|-]((?!%>).)*%>/g.test(path2) 
                       && !/\s*{{((?!}}).)*}}/g.test(path2) 
                       && !/^\s*javascript/i.test(path2)
                       && (url.indexOf("/")!=0)){
                      var relativePath = "/resources/"+path.relative(workDir,resloveUrl).replace(/\\/g,"/");
                      content = content.replace(path1, '"'+relativePath+'"');
                   }
               }
            }
        }
        return content;
  };

module.exports = new UriResource();