FileDiffEngine Example

The idea of this engine is to parse files with the same record layout and do some diff over the records.

To work with the DiffEngine your record must implement the interface IComparableRecord

[DelimitedRecord("|")] public class Customers: IComparableRecord { public string CustomerID; public string CompanyName; public string ContactName; public string ContactTitle; public string Address; public string City; public string Country; public bool IsEqualRecord(object record) { Customers rec = (Customers) record; return this.CustomerID == rec.CustomerID; } }

For example if you want to get the new customers based on two customers files you can use:

engine = new FileDiffEngine(typeof (Customers)); Customers[] res = engine.OnlyNewRecords("customersold.txt", "customernew.txt") as Customers[];

In the res array you have all the records in the file customersnew.txt that dont exists in the customersold.txt file

Now you may need to extract the records that apeer in both files:

engine = new FileDiffEngine(typeof (Customers)); Customers[] res = engine.OnlyDuplicatedRecords("customersold.txt", "customernew.txt") as Customers[];

In the res array you have all the records in the file customersnew.txt that exists in the customersold.txt file

And how many lines you need to write the diff to other file... you are right one line !!

engine = new FileDiffEngine(typeof (Customers)); engine.WriteNewRecords("customersold.txt", "customernew.txt", "onlynews.txt");

Enjoy it !!!

See also

Must Read - Quick Start Guide - Attributes List - F.A.Q. - Examples of Use - Contacts & Credits - Donations

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