public string RepairMissing(bool isFinalRepair)
{
if (Data.fBuf == null || actualFlacs == null || actualFlacs.Count == 0 || actualFlacs.Count != Data.Files.Items.Count || Data.Issues.MaxSeverity >= Severity.Error)
{
return("Invalid attempt");
}
string err = null;
int buf2Size = Data.fBuf.Length;
for (int ix = 0; ix < actualFlacs.Count; ++ix)
{
buf2Size += actualFlacs[ix].Name.Length - Data.Files.Items[ix].Name.Length;
}
var buf2 = new byte[buf2Size];
int bufIx0 = Data.Files.Items[0].BufIndex;
int length = bufIx0;
Array.Copy(Data.fBuf, buf2, bufIx0);
int dstIx = 0;
for (int ix = 0;;)
{
dstIx += length;
if (dstIx >= buf2.Length)
{
break;
}
byte[] nameBytes = FormatBase.Cp1252.GetBytes(actualFlacs[ix].Name);
Array.Copy(nameBytes, 0, buf2, dstIx, nameBytes.Length);
dstIx += nameBytes.Length;
string try1252 = FormatBase.Cp1252.GetString(nameBytes);
if (err == null && try1252 != actualFlacs[ix].Name)
{
err = "Track file name(s) not Windows-1252 clean.";
}
int srcIx = Data.Files.Items[ix].BufIndex2;
++ix;
length = (ix == actualFlacs.Count ? Data.fBuf.Length : Data.Files.Items[ix].BufIndex) - srcIx;
Array.Copy(Data.fBuf, srcIx, buf2, dstIx, length);
}
if (err == null)
{
try
{
Data.fbs.Position = bufIx0;
Data.fbs.Write(buf2, bufIx0, buf2.Length - bufIx0);
if (Data.fbs.Length != buf2.Length)
{
Data.fbs.SetLength(buf2.Length);
}
if (isFinalRepair)
{
CloseFile();
}
for (int ix = 0; ix < Data.Files.Items.Count; ++ix)
{
FilesModel.SetIsFound(ix, true);
FilesModel.SetName(ix, actualFlacs[ix].Name);
}
}
catch (Exception ex) when(ex is UnauthorizedAccessException || ex is IOException)
{
err = ex.Message.TrimEnd(null);
}
}
return(err);
}