/// <summary>
/// Function that read Hasher object from specific file.
/// </summary>
/// <param name="fileName">File that will be read for data. Has to has .HaDi extension.</param>
/// <param name="syncDirPath">Path to a directory that has to be syncronized.</param>
/// <param name="Filed">A Filer object that will help to decide which hashes are goes and which are not for Hasher (if file doesnt exist hash doesnt go to hasher).</param>
public static void ReadHashesFromFile(string fileName, string syncDirPath, Filer Filed)
{
// Check if file doesnt exist, then Ok.
if (File.Exists("HashDictionaries\\" + fileName))
{
using (StreamReader sr = new StreamReader("HashDictionaries\\" + fileName))
{
while (sr.Peek() >= 0)
{
string[] splitted = sr.ReadLine().Split(new string[] { "?" }, StringSplitOptions.RemoveEmptyEntries);
// We take LastWriteTime to make sure if the next time we access this file we get hash of THE SAME FILE
// if LastWriteTime will be different from that we write -> recompute hash.
FileInfo fi = new FileInfo(syncDirPath + splitted[0]);
int index = Filed.FilesData.FindIndex(x => x.relativePath == splitted[0]);
string fiSL = fi.LastWriteTime.ToString();
if (index != -1 && fiSL == splitted[2])
{
Filed.FilesData[index].hashMD5 = splitted[1];
}
}
}
}
}
/// <summary>
/// Function that stores Hasher object to specific file.
/// </summary>
/// <param name="fileName">File that will be created and used for storing Hasher object data. Has to has .HaDi extension.</param>
/// <param name="Hashed">A Hasher object that data will be written to the file(hashes).</param>
/// <param name="Filed">A Filer object that data will be written to the file(Relative pathes).</param>
public static void WriteHashesToFile(string fileName, Filer Filed)
{
// Create a file to write to.
using (StreamWriter sw = File.CreateText("HashDictionaries\\" + fileName))
{
for (int i = 0; i < Filed.FilesData.Count; i++)
{
// We write LastWriteTime to make sure if the next time we access this file we get hash of THE SAME FILE
// if LastWriteTime will be different from that we write -> recompute hash.
FileInfo fi = new FileInfo(Filed.FilesData[i].localPath);
sw.Write(Filed.FilesData[i].relativePath + "?" + Filed.FilesData[i].hashMD5 + "?" + fi.LastWriteTime);
if (i != Filed.FilesData.Count - 1)
{
sw.Write("\n");
}
}
}
}
