/// <summary>
/// Rerurns up to maxEncodings codpages that are assumed to be apropriate
/// </summary>
/// <param name="input">array containing the raw data</param>
/// <param name="maxEncodings">maxiumum number of encodings to detect</param>
/// <returns>an array of Encoding with assumed encodings</returns>
public static Encoding[] DetectInputCodepages(byte[] input, int maxEncodings)
{
if (maxEncodings < 1)
throw new ArgumentOutOfRangeException("at least one encoding must be returend", "maxEncodings");
if (input == null)
throw new ArgumentNullException("input");
// empty strings can always be encoded as ASCII
if (input.Length == 0)
return new Encoding[] { Encoding.ASCII };
// expand the string to be at least 256 bytes
if (input.Length < 256)
{
byte[] newInput = new byte[256];
int steps = 256 / input.Length;
for (int i = 0; i < steps; i++)
Array.Copy(input, 0, newInput, input.Length * i, input.Length);
int rest = 256 % input.Length;
if (rest > 0)
Array.Copy(input, 0, newInput, steps * input.Length, rest);
input = newInput;
}
List<Encoding> result = new List<Encoding>();
// get the IMultiLanguage" interface
MultiLanguage.IMultiLanguage2 multilang2 = new MultiLanguage.CMultiLanguageClass();
if (multilang2 == null)
throw new System.Runtime.InteropServices.COMException("Failed to get IMultilang2");
try
{
MultiLanguage.DetectEncodingInfo[] detectedEncdings = new MultiLanguage.DetectEncodingInfo[maxEncodings];
int scores = detectedEncdings.Length;
int srcLen = input.Length;
// setup options (none)
MultiLanguage.MLDETECTCP options = MultiLanguage.MLDETECTCP.MLDETECTCP_NONE;
// finally... call to DetectInputCodepage
multilang2.DetectInputCodepage(options, 0,
ref input[0], ref srcLen, ref detectedEncdings[0], ref scores);
// get result
if (scores > 0)
{
for (int i = 0; i < scores; i++)
{
// add the result
result.Add(Encoding.GetEncoding((int)detectedEncdings[i].nCodePage));
}
}
}
finally
{
Marshal.FinalReleaseComObject(multilang2);
}
// nothing found
return result.ToArray();
}
/// <summary>
/// Rerurns up to maxEncodings codpages that are assumed to be apropriate
/// </summary>
/// <param name="input">array containing the raw data</param>
/// <param name="maxEncodings">maxiumum number of encodings to detect</param>
/// <returns>an array of Encoding with assumed encodings</returns>
public static Encoding[] DetectInputCodepages(byte[] input, int maxEncodings)
{
if (maxEncodings < 1)
{
throw new ArgumentOutOfRangeException("maxEncodings", "at least one encoding must be returned");
}
if (input == null)
{
throw new ArgumentNullException("input");
}
// empty strings can always be encoded as ASCII
if (input.Length == 0)
{
return new Encoding[] { Encoding.ASCII }
}
;
// expand the string to be at least 256 bytes
if (input.Length < 256)
{
byte[] newInput = new byte[256];
int steps = 256 / input.Length;
for (int i = 0; i < steps; i++)
{
Array.Copy(input, 0, newInput, input.Length * i, input.Length);
}
int rest = 256 % input.Length;
if (rest > 0)
{
Array.Copy(input, 0, newInput, steps * input.Length, rest);
}
input = newInput;
}
List <Encoding> result = new List <Encoding>();
// get the IMultiLanguage" interface
MultiLanguage.IMultiLanguage2 multilang2 = new MultiLanguage.CMultiLanguageClass();
if (multilang2 == null)
{
throw new COMException("Failed to get IMultilang2");
}
try
{
MultiLanguage.DetectEncodingInfo[] detectedEncdings = new MultiLanguage.DetectEncodingInfo[maxEncodings];
int scores = detectedEncdings.Length;
int srcLen = input.Length;
// setup options (none)
MultiLanguage.MLDETECTCP options = MultiLanguage.MLDETECTCP.MLDETECTCP_NONE;
// finally... call to DetectInputCodepage
multilang2.DetectInputCodepage(options, 0,
ref input[0], ref srcLen, ref detectedEncdings[0], ref scores);
// get result
if (scores > 0)
{
for (int i = 0; i < scores; i++)
{
// add the result
result.Add(Encoding.GetEncoding((int)detectedEncdings[i].nCodePage));
}
}
}
finally
{
Marshal.FinalReleaseComObject(multilang2);
}
// nothing found
return(result.ToArray());
}
/// <summary>
/// Rerurns up to maxEncodings codpages that are assumed to be apropriate
/// </summary>
/// <param name="input">array containing the raw data</param>
/// <param name="maxEncodings">maxiumum number of encodings to detect</param>
/// <returns>an array of Encoding with assumed encodings</returns>
public static Encoding[] DetectInputCodepages(byte[] input, int maxEncodings, uint preferedCodePage)
{
if (maxEncodings < 1)
{
throw new ArgumentOutOfRangeException("at least one encoding must be returend", "maxEncodings");
}
if (input == null)
{
throw new ArgumentNullException("input");
}
// empty strings can always be encoded as ASCII
if (input.Length == 0)
{
return new Encoding[] { Encoding.ASCII }
}
;
// expand the string to be at least 256 bytes
if (input.Length < 256)
{
byte[] newInput = new byte[256];
int steps = 256 / input.Length;
for (int i = 0; i < steps; i++)
{
Array.Copy(input, 0, newInput, input.Length * i, input.Length);
}
int rest = 256 % input.Length;
if (rest > 0)
{
Array.Copy(input, 0, newInput, steps * input.Length, rest);
}
input = newInput;
}
List <Encoding> result = new List <Encoding>();
// get the IMultiLanguage" interface
MultiLanguage.IMultiLanguage3 multilang3 = new MultiLanguage.CMultiLanguageClass();
if (multilang3 == null)
{
throw new System.Runtime.InteropServices.COMException("Failed to get IMultilang3");
}
try
{
MultiLanguage.DetectEncodingInfo[] detectedEncdings;
detectedEncdings = new MultiLanguage.DetectEncodingInfo[maxEncodings];
int scores = detectedEncdings.Length;
int srcLen = input.Length;
// setup options (none)
MultiLanguage.MLDETECTCP options = MultiLanguage.MLDETECTCP.MLDETECTCP_NONE;
// finally... call to DetectInputCodepage
// get unmanaged arrays
IntPtr pPrefEncs = Marshal.AllocCoTaskMem(sizeof(uint) * PreferedEncodings.Length);
if (PreferedEncodings != null)
{
Marshal.Copy(PreferedEncodings, 0, pPrefEncs, PreferedEncodings.Length);
}
MultiLanguage.HRESULT hres = MultiLanguage.HRESULT.E_FAIL;
//we need an array of signed bytes...
sbyte[] sbInput = null;
sbInput = new SByte[srcLen];
for (int i = 0; i < srcLen; ++i)
{
sbInput[i] = (SByte)input[i];
}
try
{
hres = multilang3.DetectInputCodepage(
options,
preferedCodePage,
ref sbInput[0],
ref srcLen,
ref detectedEncdings[0],
ref scores
);
}
catch (COMException exc)
{
MessageBox.Show(exc.Message);
}
//hres = multilang3.DetectInputCodepage(
// options,
// preferedCodePage,
// ref input[0],
// ref srcLen,
// ref detectedEncdings[0],
// ref scores
// );
if (hres != MultiLanguage.HRESULT.S_OK)
{
MessageBox.Show("Error 3 ! HRESULT=" + hres.ToString());
}
// get result
if (scores > 0)
{
for (int i = 0; i < scores; i++)
{
// add the result
result.Add(Encoding.GetEncoding((int)detectedEncdings[i].nCodePage));
}
}
}
finally
{
Marshal.FinalReleaseComObject(multilang3);
}
// nothing found
return(result.ToArray());
}