private async void EncryptFileToBase64String_Clicked(object sender, EventArgs e)
{
FileData file = await CrossFilePicker.Current.PickFile();
if (file != null)
{
await Navigation.PushModalAsync(popup);
await Task.Delay(5000);
StringBuilder stb = new StringBuilder(file.FilePath);
int postIndex = IndexOf(stb, file.FileName, 0, true);
string folderPath = stb.Remove(postIndex, file.FilePath.Length - postIndex).ToString();
//convert android content Uri into physical path, normally happens in Android emulator
folderPath = ConvertAndroidContentUriPath(folderPath);
string encryptedStr = await XamEncDec.EncryptFileAsBase64String(false, false, folderPath, "", file.FileName, "myPassword");
//edt_encfiletostr.Text = encryptedStr;
file.Dispose();
Output outp = new Output();
outp.OutputStr = encryptedStr;
var OutputPage = new OutputText();
OutputPage.BindingContext = outp;
await Navigation.PushAsync(OutputPage);
await Navigation.PopModalAsync();
}
}
public void Dispose()
{
if (m_isDisposable)
{
FileData.Dispose();
m_isDisposable = false;
}
}
private void FromBMP(FileData file)
{
byte[] b;
using (var memoryStream = new MemoryStream())
{
file.GetStream().CopyTo(memoryStream);
file.Dispose();
b = memoryStream.ToArray();
memoryStream.Close();
memoryStream.Dispose();
}
Int16 offset = BitConverter.ToInt16(b.ToList().Skip(10).Take(4).ToArray(), 0);
Int16 width = BitConverter.ToInt16(b.ToList().Skip(18).Take(4).ToArray(), 0);
Int16 height = BitConverter.ToInt16(b.ToList().Skip(22).Take(4).ToArray(), 0);
//
// size check?
//
List <byte> lb = b.ToList().Skip(offset).ToList();
int bytesPerRow = (int)Math.Ceiling(width / 8d);
int bytesToSkipEachRow = bytesPerRow % 4;
if (bytesToSkipEachRow != 0)
{
bytesToSkipEachRow = 4 - bytesToSkipEachRow;
}
List <bool> final = new List <bool>();
List <byte> row;
bool[] boolAray;
List <bool> boolList;
for (int i = 0; i < height; i++)
{
if (i == 129)
{
}
row = lb.Take(bytesPerRow).ToList();
lb.RemoveRange(0, bytesPerRow + bytesToSkipEachRow);
boolAray = new bool[width];
if (width % 8 != 0)
{
boolAray = new bool[(8 - width % 8) + width];
}
BitArray bitArray = new BitArray(row.ToArray());
bitArray.CopyTo(boolAray, 0);
boolList = boolAray.ToList();
for (int j = 0; j < row.Count; j++)
{
boolList.AddRange(boolList.Take(8).Reverse().ToList());
boolList.RemoveRange(0, 8);
}
boolList.Reverse();
if (width % 8 != 0)
{
boolList.RemoveRange(0, 8 - width % 8);
}
final.Reverse();
final.AddRange(boolList);
final.Reverse();
}
this.width = width;
this.height = height;
this.image = EncodeLargeBool(final.ToArray());
}
public void Delete()//doesnt delete actual file, only the memory reference
{
FileName = "";
FileData.Dispose();
}
SimpleImage FileToSimpleImage(FileData file)
{
byte[] b;
using (var memoryStream = new MemoryStream())
{
file.GetStream().CopyTo(memoryStream);
file.Dispose();
b = memoryStream.ToArray();
memoryStream.Close();
memoryStream.Dispose();
}
Int16 offset = BitConverter.ToInt16(b.ToList().Skip(10).Take(4).ToArray(), 0);
Int16 width = BitConverter.ToInt16(b.ToList().Skip(18).Take(4).ToArray(), 0);
Int16 height = BitConverter.ToInt16(b.ToList().Skip(22).Take(4).ToArray(), 0);
if (width * height > 128 * 8)
{
return(null);
}
List <byte> lb = b.ToList().Skip(offset).ToList();
int bytesPerRow = (int)Math.Ceiling(width / 8d);
int bytesToSkipEachRow = bytesPerRow % 4;
if (bytesToSkipEachRow != 0)
{
bytesToSkipEachRow = 4 - bytesToSkipEachRow;
}
List <bool> final = new List <bool>();
BitArray bitArray;
List <byte> row;
bool[] boolAray;
List <bool> boolList;
for (int i = 0; i < height; i++)
{
row = lb.Take(bytesPerRow).ToList();
lb.RemoveRange(0, bytesPerRow + bytesToSkipEachRow);
boolAray = new bool[width];
if (width % 8 != 0)
{
boolAray = new bool[(8 - width % 8) + width];
}
bitArray = new BitArray(row.ToArray());
bitArray.CopyTo(boolAray, 0);
if (width % 8 != 0)
{
boolList = boolAray.ToList();
boolList.RemoveRange(0, 8 - width % 8);
}
else
{
boolList = boolAray.ToList();
}
final.AddRange(boolList);
}
bitArray = new BitArray(final.ToArray());
bitArray.Not();
SimpleImage simpleImage = new SimpleImage(width, height, bitArray);
return(simpleImage);
}
