utils.js
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var parseFilter = require('ldapjs').parseFilter;
var utils = {};
utils.findQueryString = function(req)
{
var keywords = ["filter","offset","orderby","limit","fields"];
var baseUrl = decodeURIComponent(req.url);
if(baseUrl && baseUrl.indexOf("filter=(") != -1)
{
baseUrl = "&"+baseUrl.split("?")[1];
var indexList = [];
var listData = {};
for(var i=0;i<keywords.length;i++)
{
var foundIndex = baseUrl.indexOf("&"+keywords[i]+"=");
if(foundIndex != -1)
{
listData[foundIndex] = keywords[i];
indexList.push(foundIndex);
}
}
indexList.sort(function(a, b){return a - b})
for(var i = 0;i<keywords.length;i++)
{
baseUrl = baseUrl.replace("&"+keywords[i]+"=","[split]")
}
var splitUrl = baseUrl.split("[split]");
req.query = {};
for(var i=0;i<indexList.length;i++)
req.query[listData[indexList[i]]] = splitUrl[i+1];
}
return req;
}
utils.getUpdateFilter = function(obj)
{
if(obj.filter)
{
var filter = findValueInBracket(obj.filter);
obj = Object.assign(obj, filter);
delete obj.filter;
}
return obj;
}
utils.getQueryFilter = async function(data)
{
var filter = parseFilter(data);
return getQuery(filter);
}
getQuery = async function(data,query){
if(!query)
var query = {};
//type !(xx) connot be use
var temFilter = data.filters;
for(var i = 0; i < temFilter.length; i++){
// console.log(temFilter[i].filters)
if(temFilter[i].filters){
query = getQuery(temFilter[i],query);
} else {
var operate = "";
switch(temFilter[i].type){
case 'equal': operate = '$eq'; break;
case 'ge': operate = '$gte'; break;//>=
case 'le': operate = '$lte'; break;//<=
case 'approx' : operate = '$in'; break;
default : operate = "$"+temFilter[i].type; break;
}
switch(operate){
case '$present' :
break;
case '$substring' :
// if(temFilter[i].initial){
// query += temFilter[i].attribute +" LIKE '"+ temFilter[i].initial + "%'"
// } else if(temFilter[i].final){
// query += temFilter[i].attribute +" LIKE '%" + temFilter[i].final + "'"
// } else {
// var any = "%";
// for(var j = 0; j < temFilter[i].any.length; j++){
// any += temFilter[i].any[j]+"%";
// }
// query += temFilter[i].attribute +" LIKE '" + any + "'"
// }
break;
default :
// query += temFilter[i].attribute +" "+ operate +" "+ temFilter[i].value;
var regexValue = temFilter[i].value;
if(data.type == 'or'){
var objOr = {}
var attribute = temFilter[i].attribute;
objOr[attribute] = regexValue
if(!query['$or'])
query['$or'] = []
query['$or'].push(objOr)
} else {
var attribute = temFilter[i].attribute;
query[attribute] = regexValue
}
// query = Object.assign(obj, obj)
break;
}
// query += temFilter[i].attribute +" "+ operate +" "+ temFilter[i].value;
}
// if(i != temFilter.length-1)
// query += " "+data.type.toUpperCase()+" "
}
return query;
}
function findValueInBracket(data)
{
data = data.substring(1,data.length-1);
var returnData = {};
if(data.indexOf("&") == -1 && data.indexOf("|") == -1)
{
//single data
var t = data.split("=");
returnData[t[0]] = t[1];
}else
{
//multi data
var left = [];
var splitData = data.split("");
for(var i=0;i<splitData.length;i++)
{
if(splitData[i] === "(")
{
left.push(i);
}
else if(splitData[i] === ")")
{
var pop = left.pop();
var rawdata = data.substring(pop+1,i);
if(rawdata.indexOf("&") == -1 && rawdata.indexOf("|") == -1)
{
var t = rawdata.split("=");
if(!returnData[t[0]])
returnData[t[0]] = [];
returnData[t[0]].push(t[1]);
}
}
}
var keylist = Object.keys(returnData)
for(var i=0;i<keylist.length;i++)
{
if(returnData[keylist[i]].length == 1)
returnData[keylist[i]] = returnData[keylist[i]][0];
}
}
return returnData;
}
module.exports = utils;