private static Paragraph GetPacParagraph(ref int index, byte[] buffer)
{
while (index < 15)
{
index++;
}
bool con = true;
while (con)
{
index++;
if (index + 20 >= buffer.Length)
{
return(null);
}
if (buffer[index] == 0xFE && buffer[index - 1] == 0x80)
{
con = false;
}
}
int feIndex = index;
byte alignment = buffer[feIndex + 1];
byte verticalAlignment = buffer[feIndex - 1];
var p = new Paragraph();
int timeStartIndex = feIndex - 15;
p.StartTime = Pac.GetTimeCode(timeStartIndex + 1, buffer);
p.EndTime = Pac.GetTimeCode(timeStartIndex + 5, buffer);
int textLength = buffer[timeStartIndex + 9] + buffer[timeStartIndex + 10] * 256;
if (textLength > 500)
{
return(null); // probably not correct index
}
int maxIndex = timeStartIndex + 10 + textLength;
var sb = new StringBuilder();
index = feIndex + 3;
int textIndex = index;
int textBegin = index;
while (textIndex < buffer.Length && textIndex <= maxIndex)
{
if (buffer[textIndex] == 0xFE)
{
if (textIndex > textBegin)
{
sb.AppendLine(Encoding.UTF8.GetString(buffer, textBegin, textIndex - textBegin - 1));
textBegin = textIndex + 7;
textIndex += 6;
}
}
else if (buffer[textIndex] == 0xFF)
{
sb.Append(' ');
}
textIndex++;
}
if (textIndex > textBegin)
{
sb.Append(Encoding.UTF8.GetString(buffer, textBegin, textIndex - textBegin - 1));
}
p.Text = sb.ToString().Trim();
for (int k = 0; k < p.Text.Length; k++)
{
if (p.Text[k] == 65533)
{
p.Text = p.Text.Remove(k, 1).Insert(k, ".");
}
}
index += textLength;
if (index + 20 >= buffer.Length)
{
return(null);
}
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
p.Text = p.Text.Replace(Environment.NewLine + ">", Environment.NewLine);
p.Text = p.Text.Replace("\0", string.Empty);
if (verticalAlignment < 5)
{
if (alignment == 1) // left
{
p.Text = "{\\an7}" + p.Text;
}
else if (alignment == 0) // right
{
p.Text = "{\\an9}" + p.Text;
}
else
{
p.Text = "{\\an8}" + p.Text;
}
}
else if (verticalAlignment < 9)
{
if (alignment == 1) // left
{
p.Text = "{\\an4}" + p.Text;
}
else if (alignment == 0) // right
{
p.Text = "{\\an6}" + p.Text;
}
else
{
p.Text = "{\\an5}" + p.Text;
}
}
else
{
if (alignment == 1) // left
{
p.Text = "{\\an1}" + p.Text;
}
else if (alignment == 0) // right
{
p.Text = "{\\an3}" + p.Text;
}
}
p.Text = p.Text.Replace(Convert.ToChar(0).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(1).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(2).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(3).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(4).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(5).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(6).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(7).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(8).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(11).ToString(CultureInfo.InvariantCulture), string.Empty);
p.Text = p.Text.Replace(Convert.ToChar(12).ToString(CultureInfo.InvariantCulture), string.Empty);
return(p);
}
private static Paragraph GetPacParagraph(ref int index, byte[] buffer)
{
while (index < 15)
{
index++;
}
bool con = true;
while (con)
{
index++;
if (index + 20 >= buffer.Length)
{
return(null);
}
if (buffer[index] == 0xFE && buffer[index - 1] == 0x80)
{
con = false;
}
}
int feIndex = index;
byte alignment = buffer[feIndex + 1];
byte verticalAlignment = buffer[feIndex - 1];
var p = new Paragraph();
int timeStartIndex = feIndex - 15;
p.StartTime = Pac.GetTimeCode(timeStartIndex + 1, buffer);
p.EndTime = Pac.GetTimeCode(timeStartIndex + 5, buffer);
int textLength = buffer[timeStartIndex + 9] + buffer[timeStartIndex + 10] * 256;
if (textLength > 500)
{
return(null); // probably not correct index
}
int maxIndex = timeStartIndex + 10 + textLength;
var sb = new StringBuilder();
index = feIndex + 3;
int textIndex = index;
int textBegin = index;
while (textIndex < buffer.Length && textIndex <= maxIndex)
{
if (buffer[textIndex] == 0xFE)
{
if (textIndex > textBegin)
{
for (int j = textBegin; j <= textIndex - textBegin - 1; j++)
{
if (buffer[j] == 0xff)
{
buffer[j] = 0x2e; // replace end of line marker
}
}
sb.AppendLine(Encoding.UTF8.GetString(buffer, textBegin, textIndex - textBegin));
textBegin = textIndex + 7;
textIndex += 6;
}
}
else if (buffer[textIndex] == 0xFF)
{
sb.Append(' ');
}
textIndex++;
}
if (textIndex > textBegin)
{
sb.Append(Encoding.UTF8.GetString(buffer, textBegin, textIndex - textBegin - 1));
}
p.Text = sb.ToString().Trim();
if (p.Text.Length > 1 && (p.Text[0] == 31 || p.Text[1] == 65279))
{
p.Text = p.Text.Remove(0, 2);
}
for (int k = 0; k < p.Text.Length; k++)
{
if (p.Text[k] == 65533)
{
p.Text = p.Text.Remove(k, 1).Insert(k, ".");
}
}
index += textLength;
if (index + 20 >= buffer.Length)
{
return(null);
}
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
p.Text = p.Text.Replace(Environment.NewLine + ">", Environment.NewLine);
p.Text = p.Text.Replace("\0", string.Empty);
if (verticalAlignment < 5)
{
if (alignment == 1) // left
{
p.Text = "{\\an7}" + p.Text;
}
else if (alignment == 0) // right
{
p.Text = "{\\an9}" + p.Text;
}
else
{
p.Text = "{\\an8}" + p.Text;
}
}
else if (verticalAlignment < 9)
{
if (alignment == 1) // left
{
p.Text = "{\\an4}" + p.Text;
}
else if (alignment == 0) // right
{
p.Text = "{\\an6}" + p.Text;
}
else
{
p.Text = "{\\an5}" + p.Text;
}
}
else
{
if (alignment == 1) // left
{
p.Text = "{\\an1}" + p.Text;
}
else if (alignment == 0) // right
{
p.Text = "{\\an3}" + p.Text;
}
}
// Remove all control-characters if any in p.Text.
p.Text = p.Text.RemoveControlCharactersButWhiteSpace();
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
// Fix italics (basic)
if (p.Text.StartsWith('<') &&
!p.Text.StartsWith("<i>", StringComparison.OrdinalIgnoreCase) &&
!p.Text.StartsWith("<b>", StringComparison.OrdinalIgnoreCase) &&
!p.Text.StartsWith("<u>", StringComparison.OrdinalIgnoreCase) &&
!p.Text.StartsWith("<font ", StringComparison.OrdinalIgnoreCase))
{
p.Text = "<i>" + p.Text.TrimStart('<').Replace(Environment.NewLine + "<", Environment.NewLine) + "</i>";
}
else if (p.Text.Contains(Environment.NewLine + "<"))
{
p.Text = p.Text.Replace(Environment.NewLine + "<", Environment.NewLine + "<i>") + "</i>";
}
return(p);
}