protected string CallSafeConvert(DirectableEncConverter aEC, string strInput)
{
try
{
return aEC.Convert(strInput);
}
catch (Exception ex)
{
MessageBox.Show(String.Format("Conversion failed! Reason: {0}", ex.Message), cstrCaption);
}
return null;
}
protected string CallSafeConvert(DirectableEncConverter aEC, string strInput, bool bAllowAbort)
{
try
{
if (!String.IsNullOrEmpty(strInput))
{
// if the input side is legacy and the code page of the converter is not the same as the
// code page we opened the file with, then we'll be passing the wrong values...
if (aEC.IsLhsLegacy)
{
IEncConverter aIEC = aEC.GetEncConverter; // IsLhsLegacy will throw if GetEncConverter returns null
if (aIEC.DirectionForward && (aIEC.CodePageInput != 0) && (aIEC.CodePageInput != m_encOpen.CodePage))
{
// we opened the SFM files with Encoding 0 == CP_ACP (or the default code page for this computer)
// but if the CodePageInput used by EncConverters is a different code page, then this will fail.
// If so, then convert it to a byte array and pass that
byte[] abyInput = m_encOpen.GetBytes(strInput);
strInput = ECNormalizeData.ByteArrToString(abyInput);
aEC.GetEncConverter.EncodingIn = EncodingForm.LegacyBytes;
}
}
string strOutput = aEC.Convert(strInput);
aEC.GetEncConverter.EncodingIn = EncodingForm.Unspecified; // in case the user switches directions
// similarly, if the output is legacy, then if the code page used was not the same as the
// default code page, then we have to convert it so it'll produce the correct answer
// (this probably doesn't work for Legacy<>Legacy code pages)
if (aEC.IsRhsLegacy)
{
IEncConverter aIEC = aEC.GetEncConverter;
if ( (!aIEC.DirectionForward && (aIEC.CodePageInput != 0) && (Encoding.Default.CodePage != aIEC.CodePageInput))
|| (aIEC.DirectionForward && (aIEC.CodePageOutput != 0) && (Encoding.Default.CodePage != aIEC.CodePageOutput)))
{
int nCP = (!aIEC.DirectionForward) ? aIEC.CodePageInput : aIEC.CodePageOutput;
byte[] abyOutput = EncConverters.GetBytesFromEncoding(nCP, strOutput, true);
strOutput = new string(Encoding.Default.GetChars(abyOutput));
}
}
return strOutput;
}
}
catch (Exception ex)
{
DialogResult res = MessageBox.Show(String.Format("Conversion failed! Reason: {0}", ex.Message),
cstrCaption, (bAllowAbort) ? MessageBoxButtons.AbortRetryIgnore : MessageBoxButtons.OK);
if (res == DialogResult.Abort)
throw;
}
return strInput;
}
// allow these to be overidden by sub-class forms (e.g. to add a round-trip refresh as well)
protected virtual void RefreshTextBoxes(DirectableEncConverter aEC)
{
ForwardString = aEC.Convert(InputString);
}
protected string CallSafeConvert(DirectableEncConverter aDEC, string strPreviewData)
{
string strOutput = null;
try
{
// this might throw up, so don't let it crash the program.
strOutput = aDEC.Convert(strPreviewData);
}
catch (Exception ex)
{
MessageBox.Show(String.Format("Unable to convert data for preview because: '{0}'", ex.Message), EncConverters.cstrCaption);
}
return strOutput;
}