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saviour-backup-system/Saviour Backup System/tools.cs

74 lines
2.6 KiB
C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.IO;
using System.Security.Cryptography;
namespace Saviour_Backup_System
{
class tools
{
public static string Trim(string value, int maxLength)
{
if (value.Length > maxLength)
{
return value.Substring(0, maxLength - 3) + "...";
}
return value;
}
public static string hash(string input)
{
// step 1, calculate MD5 hash from input
MD5 md5 = MD5.Create();
byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(input);
byte[] hash = md5.ComputeHash(inputBytes);
// step 2, convert byte array to hex string
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hash.Length; i++)
{
sb.Append(hash[i].ToString("X2"));
}
return sb.ToString();
}
public static Int64 getUnixTimeStamp() { return (Int64)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds; }
public static string hashDirectory(string path)
{
// assuming you want to include nested folders
var files = Directory.GetFiles(path, "*.*", SearchOption.AllDirectories)
.OrderBy(p => p).ToList();
MD5 md5 = MD5.Create();
for (int i = 0; i < files.Count; i++)
{
string file = files[i];
// hash path
string relativePath = file.Substring(path.Length + 1);
byte[] pathBytes = Encoding.UTF8.GetBytes(relativePath.ToLower());
md5.TransformBlock(pathBytes, 0, pathBytes.Length, pathBytes, 0);
// hash contents
byte[] contentBytes = File.ReadAllBytes(file);
if (i == files.Count - 1)
md5.TransformFinalBlock(contentBytes, 0, contentBytes.Length);
else
md5.TransformBlock(contentBytes, 0, contentBytes.Length, contentBytes, 0);
}
return BitConverter.ToString(md5.Hash).Replace("-", "").ToLower();
}
public static DateTime unixDateTime(long unixTimeStamp)
{
// Unix timestamp is seconds past epoch
System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc);
dtDateTime = dtDateTime.AddSeconds(unixTimeStamp).ToLocalTime();
return dtDateTime;
}
}
}