/// <summary>
/// 执行打开文件
/// </summary>
/// <param name="fileName"></param>
private void _DoOpenFile(string fileName)
{
try
{
hexBox.stream = null;
DynamicFileByteProvider dynamicFileByteProvider;
try
{
Encoding _encoding = this.hexBox._encoding;
if (this.hexBox.IsUseBase64)
{
this.hexBox.IsUseEncoding = true;
// 读成自己的解码后的流
try
{
FileStream inputStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
byte[] data = new byte[4 * 1024]; //Chunk size is 4k
inputStream.Seek(0, SeekOrigin.Begin);
int read = inputStream.Read(data, 0, data.Length);
byte[] chunk = new byte[4 * 1024];
List <byte> list = new List <byte>();
while (read > 0)
{
chunk = Convert.FromBase64String(_encoding.GetString(data, 0, read));
list.AddRange(chunk);
read = inputStream.Read(data, 0, data.Length);
}
var decodeBytes = list.ToArray();
// 放入流中
Stream stream = new MemoryStream(decodeBytes);
inputStream.Close();
//dynamicFileByteProvider = new DynamicFileByteProvider(fileName);
dynamicFileByteProvider = new DynamicFileByteProvider(stream, _encoding);
}
catch (Exception ex)
{
var tmp = @"Base64编码无效";
this.hexBox._encoding = Encoding.UTF8;
byte[] bytes = this.hexBox._encoding.GetBytes(tmp);
Stream stream = new MemoryStream(bytes);
// try to open in read-only mode
dynamicFileByteProvider = new DynamicFileByteProvider(stream);
this.hexBox.IsUseBase64 = false;
}
}
else
{
if (!System.Utility.Helper.File.IsValid(fileName))
{
byte[] data = new byte[0];
Stream stream = new MemoryStream(data);
dynamicFileByteProvider = new DynamicFileByteProvider(stream);
hexBox.ByteProvider = dynamicFileByteProvider;
_fileName = fileName;
this.fileSizeToolStripStatusLabel.Text = Util.GetDisplayBytes(this.hexBox.ByteProvider.Length);
return;
}
// try to open in write mode
dynamicFileByteProvider = new DynamicFileByteProvider(fileName, true,
this.IsGoToGetDefaultCharset);
}
}
catch (IOException) // write mode failed
{
try
{
if (!System.Utility.Helper.File.IsValid(fileName))
{
return;
}
// try to open in read-only mode
dynamicFileByteProvider = new DynamicFileByteProvider(fileName, true);
}
catch (IOException) // read-only also failed
{
// file cannot be opened
return;
}
}
if (!System.Utility.Helper.File.IsValid(fileName))
{
return;
}
if (this.IsGoToGetDefaultCharset)
{
hexBox._encoding = dynamicFileByteProvider.GetEncoding();
IsGoToGetDefaultCharset = false;
}
hexBox.ByteProvider = dynamicFileByteProvider;
_fileName = fileName;
this.fileSizeToolStripStatusLabel.Text = Util.GetDisplayBytes(this.hexBox.ByteProvider.Length);
}
catch
{
byte[] data = new byte[0];
Stream stream = new MemoryStream(data);
var dynamicFileByteProvider = new DynamicFileByteProvider(stream);
hexBox.ByteProvider = dynamicFileByteProvider;
_fileName = fileName;
this.fileSizeToolStripStatusLabel.Text = Util.GetDisplayBytes(this.hexBox.ByteProvider.Length);
return;
}
}
/// <summary>
/// 使用流打开文件
/// </summary>
/// <param name="stream">文件流</param>
private void _DoOpenFile(Stream stream)
{
hexBox.fileName = null;
DynamicFileByteProvider dynamicFileByteProvider;
try
{
var bugFix = stream.ReadByte();
stream.Position = 0;
this.hexBox.stream = stream;
try
{
try
{
Encoding _encoding = this.hexBox._encoding;
if (this.hexBox.IsUseBase64 && stream.Length < 1024 * 1024 * 10)
{
this.hexBox.IsUseEncoding = true;
// 读成自己的解码后的流
try
{
byte[] data = new byte[4 * 1024]; //Chunk size is 4k
stream.Seek(0, SeekOrigin.Begin);
int read = stream.Read(data, 0, data.Length);
byte[] chunk = new byte[4 * 1024];
List <byte> list = new List <byte>();
while (read > 0)
{
chunk = Convert.FromBase64String(_encoding.GetString(data, 0, read));
list.AddRange(chunk);
read = stream.Read(data, 0, data.Length);
}
var decodeBytes = list.ToArray();
// 放入流中
Stream ms = new MemoryStream(decodeBytes);
stream.Close();
//dynamicFileByteProvider = new DynamicFileByteProvider(fileName);
dynamicFileByteProvider = new DynamicFileByteProvider(ms, _encoding);
}
catch (Exception ex)
{
var tmp = @"Base64编码无效";
this.hexBox._encoding = Encoding.UTF8;
byte[] bytes = this.hexBox._encoding.GetBytes(tmp);
Stream tmp_stream = new MemoryStream(bytes);
// try to open in read-only mode
dynamicFileByteProvider = new DynamicFileByteProvider(tmp_stream);
this.hexBox.IsUseBase64 = false;
}
}
else
{
// try to open in write mode
dynamicFileByteProvider = new DynamicFileByteProvider(stream);
}
}
catch (IOException) // write mode failed
{
try
{
// try to open in read-only mode
dynamicFileByteProvider = new DynamicFileByteProvider(stream);
}
catch (IOException) // read-only also failed
{
// file cannot be opened
return;
}
}
if (this.IsGoToGetDefaultCharset)
{
hexBox._encoding = dynamicFileByteProvider.GetEncoding();
IsGoToGetDefaultCharset = false;
}
hexBox.ByteProvider = dynamicFileByteProvider;
this.fileSizeToolStripStatusLabel.Text = Util.GetDisplayBytes(this.hexBox.ByteProvider.Length);
}
catch
{
}
}
catch (Exception ex)
{
byte[] data = new byte[0];
Stream stream1 = new MemoryStream(data);
dynamicFileByteProvider = new DynamicFileByteProvider(stream1);
hexBox.ByteProvider = dynamicFileByteProvider;
this.fileSizeToolStripStatusLabel.Text = Util.GetDisplayBytes(this.hexBox.ByteProvider.Length);
}
}
