/// <summary>
/// Populates the values in the current instance by parsing
/// its field data in a specified version.
/// </summary>
/// <param name="data">
/// A <see cref="ByteVector" /> object containing the
/// extracted field data.
/// </param>
/// <param name="version">
/// A <see cref="byte" /> indicating the ID3v2 version the
/// field data is encoded in.
/// </param>
protected override void ParseFields(ByteVector data,
byte version)
{
if (data.Count < 4)
{
throw new CorruptFileException(
"Not enough bytes in field.");
}
encoding = (StringType)data [0];
language = data.ToString(StringType.Latin1, 1, 3);
string [] split = data.ToStrings(encoding, 4, 2);
if (split.Length == 1)
{
// Bad lyrics frame. Assume that it lacks a
// description.
description = String.Empty;
text = split [0];
}
else
{
description = split [0];
text = split [1];
}
}
/// <summary>
/// Populates the values in the current instance by parsing
/// its field data in a specified version.
/// </summary>
/// <param name="data">
/// A <see cref="ByteVector" /> object containing the
/// extracted field data.
/// </param>
/// <param name="version">
/// A <see cref="byte" /> indicating the ID3v2 version the
/// field data is encoded in.
/// </param>
protected override void ParseFields(ByteVector data,
byte version)
{
if (data.Count < 4)
{
throw new CorruptFileException(
"Not enough bytes in field.");
}
encoding = (StringType)data [0];
language = data.ToString(StringType.Latin1, 1, 3);
// Instead of splitting into two string, in the format
// [{desc}\0{value}], try splitting into three strings
// in case of a misformatted [{desc}\0{value}\0].
string [] split = data.ToStrings(encoding, 4, 3);
if (split.Length == 1)
{
// Bad comment frame. Assume that it lacks a
// description.
description = String.Empty;
text = split [0];
}
else
{
description = split [0];
text = split [1];
}
}
/// <summary>
/// Performs the actual parsing of the raw data.
/// </summary>
/// <remarks>
/// Because of the high parsing cost and relatively low usage
/// of the class, <see cref="ParseFields" /> only stores the
/// field data so it can be parsed on demand. Whenever a
/// property or method is called which requires the data,
/// this method is called, and only on the first call does it
/// actually parse the data.
/// </remarks>
protected void ParseRawData()
{
if (raw_data == null)
{
return;
}
ByteVector data = raw_data;
raw_data = null;
// read the string data type (the first byte of the
// field data)
encoding = (StringType)data[0];
List <string> field_list = new List <string>();
ByteVector delim = ByteVector.TextDelimiter(encoding);
if (FrameId != FrameType.WXXX)
{
field_list.AddRange(data.ToStrings(encoding, 0));
}
else if (data.Count > 1 && !data.Mid(0,
delim.Count).Equals(delim))
{
string value = data.ToString(StringType.Latin1, 1,
data.Count - 1);
// Do a fast removal of end bytes.
if (value.Length > 1 &&
value[value.Length - 1] == 0)
{
for (int i = value.Length - 1; i >= 0; i--)
{
if (value[i] != 0)
{
value = value.Substring(0, i + 1);
break;
}
}
}
field_list.Add(value);
}
// Bad tags may have one or more nul characters at the
// end of a string, resulting in empty strings at the
// end of the FieldList. Strip them off.
while (field_list.Count != 0 &&
string.IsNullOrEmpty(field_list[
field_list.Count - 1]))
{
field_list.RemoveAt(field_list.Count - 1);
}
text_fields = field_list.ToArray();
}
public void CommentsFrameError ()
{
// http://bugzilla.gnome.org/show_bug.cgi?id=582735
// Comments data found in the wild
var vector = new ByteVector (
1, 255, 254, 73, 0, 68, 0, 51, 0, 71, 0, 58, 0, 32, 0, 50, 0, 55, 0, 0, 0);
var encoding = (StringType)vector[0];
//var language = vector.ToString (StringType.Latin1, 1, 3);
var split = vector.ToStrings (encoding, 4, 3);
Assert.AreEqual (2, split.Length);
}
public void CommentsFrameError()
{
// http://bugzilla.gnome.org/show_bug.cgi?id=582735
// Comments data found in the wild
ByteVector vector = new ByteVector (
1, 255, 254, 73, 0, 68, 0, 51, 0, 71, 0, 58, 0, 32, 0, 50, 0, 55, 0, 0, 0);
var encoding = (StringType) vector [0];
var language = vector.ToString (StringType.Latin1, 1, 3);
var split = vector.ToStrings (encoding, 4, 3);
Assert.AreEqual (2, split.Length);
}
protected void ParseRawData()
{
if (raw_data == null)
{
return;
}
ByteVector data = raw_data;
raw_data = null;
List <string> field_list = new List <string>();
ByteVector delim = ByteVector.TextDelimiter(encoding);
if (FrameId != FrameType.WXXX)
{
field_list.AddRange(data.ToStrings(StringType.Latin1, 0));
}
else if (data.Count > 1 && !data.Mid(0, delim.Count).Equals(delim))
{
string value = data.ToString(StringType.Latin1, 1, data.Count - 1);
if (value.Length > 1 && value[value.Length - 1] == 0)
{
for (int i = value.Length - 1; i >= 0; i--)
{
if (value[i] != 0)
{
value = value.Substring(0, i + 1);
break;
}
}
}
field_list.Add(value);
}
while (field_list.Count != 0 && string.IsNullOrEmpty(field_list[field_list.Count - 1]))
{
field_list.RemoveAt(field_list.Count - 1);
}
text_fields = field_list.ToArray();
}
/// <summary>
/// Populates the values in the current instance by parsing
/// its field data in a specified version.
/// </summary>
/// <param name="data">
/// A <see cref="ByteVector" /> object containing the
/// extracted field data.
/// </param>
/// <param name="version">
/// A <see cref="byte" /> indicating the ID3v2 version the
/// field data is encoded in.
/// </param>
protected override void ParseFields (ByteVector data,
byte version)
{
if (data.Count < 4)
throw new CorruptFileException (
"Not enough bytes in field.");
encoding = (StringType) data [0];
language = data.ToString (StringType.Latin1, 1, 3);
string [] split = data.ToStrings (encoding, 4, 2);
if (split.Length == 1) {
// Bad lyrics frame. Assume that it lacks a
// description.
description = String.Empty;
text = split [0];
} else {
description = split [0];
text = split [1];
}
}
/// <summary>
/// Populates the values in the current instance by parsing
/// its field data in a specified version.
/// </summary>
/// <param name="data">
/// A <see cref="ByteVector" /> object containing the
/// extracted field data.
/// </param>
/// <param name="version">
/// A <see cref="byte" /> indicating the ID3v2 version the
/// field data is encoded in.
/// </param>
protected override void ParseFields (ByteVector data,
byte version)
{
if (data.Count < 4)
throw new CorruptFileException (
"Not enough bytes in field.");
encoding = (StringType) data [0];
language = data.ToString (StringType.Latin1, 1, 3);
// Instead of splitting into two string, in the format
// [{desc}\0{value}], try splitting into three strings
// in case of a misformatted [{desc}\0{value}\0].
string [] split = data.ToStrings (encoding, 4, 3);
if (split.Length == 0) {
// No data in the frame.
description = String.Empty;
text = String.Empty;
} else if (split.Length == 1) {
// Bad comment frame. Assume that it lacks a
// description.
description = String.Empty;
text = split [0];
} else {
description = split [0];
text = split [1];
}
}
protected void ParseRawData()
{
if (raw_data == null)
{
return;
}
ByteVector data = raw_data;
raw_data = null;
// read the string data type (the first byte of the
// field data)
encoding = (StringType)data [0];
List <string> field_list = new List <string> ();
ByteVector delim = ByteVector.TextDelimiter(encoding);
if (raw_version > 3 || FrameId == FrameType.TXXX)
{
field_list.AddRange(data.ToStrings(encoding, 1));
}
else if (data.Count > 1 && !data.Mid(1,
delim.Count).Equals(delim))
{
string value = data.ToString(encoding, 1,
data.Count - 1);
// Do a fast removal of end bytes.
if (value.Length > 1 &&
value [value.Length - 1] == 0)
{
for (int i = value.Length - 1; i >= 0; i--)
{
if (value [i] != 0)
{
value = value.Substring(0, i + 1);
break;
}
}
}
if (FrameId == FrameType.TCOM ||
FrameId == FrameType.TEXT ||
FrameId == FrameType.TOLY ||
FrameId == FrameType.TOPE ||
FrameId == FrameType.TPE1 ||
FrameId == FrameType.TPE2 ||
FrameId == FrameType.TPE3 ||
FrameId == FrameType.TPE4)
{
field_list.AddRange(value.Split('/'));
}
else if (FrameId == FrameType.TCON)
{
while (value.Length > 1 && value [0] == '(')
{
int closing = value.IndexOf(')');
if (closing < 0)
{
break;
}
field_list.Add(
value.Substring(1,
closing - 1));
value = value.Substring(
closing + 1);
}
if (value.Length > 0)
{
field_list.AddRange(value.Split(new char [] { '/' }));
}
}
else
{
field_list.Add(value);
}
}
// Bad tags may have one or more nul characters at the
// end of a string, resulting in empty strings at the
// end of the FieldList. Strip them off.
while (field_list.Count != 0 &&
string.IsNullOrEmpty(field_list [
field_list.Count - 1]))
{
field_list.RemoveAt(field_list.Count - 1);
}
text_fields = field_list.ToArray();
}
protected override void ParseFields(ByteVector data, byte version)
{
if (data.Count < 4)
{
throw new CorruptFileException("Not enough bytes in field.");
}
this.encoding = (StringType) data[0];
this.language = data.ToString(StringType.Latin1, 1, 3);
string[] strArray = data.ToStrings(this.encoding, 4, 2);
if (strArray.Length == 1)
{
this.description = string.Empty;
this.text = strArray[0];
}
else
{
this.description = strArray[0];
this.text = strArray[1];
}
}
protected void ParseRawData()
{
if (raw_data == null)
{
return;
}
ByteVector data = raw_data;
raw_data = null;
encoding = (StringType)data[0];
List <string> field_list = new List <string>();
ByteVector delim = ByteVector.TextDelimiter(encoding);
if (raw_version > 3 || FrameId == FrameType.TXXX)
{
field_list.AddRange(data.ToStrings(encoding, 1));
}
else if (data.Count > 1 && !data.Mid(1, delim.Count).Equals(delim))
{
string value = data.ToString(encoding, 1, data.Count - 1);
int null_index = value.IndexOf('\x00');
if (null_index >= 0)
{
value = value.Substring(0, null_index);
}
if (FrameId == FrameType.TCOM || FrameId == FrameType.TEXT || FrameId == FrameType.TOLY || FrameId == FrameType.TOPE || FrameId == FrameType.TPE1 || FrameId == FrameType.TPE2 || FrameId == FrameType.TPE3 || FrameId == FrameType.TPE4)
{
field_list.AddRange(value.Split('/'));
}
else if (FrameId == FrameType.TCON)
{
while (value.Length > 1 && value[0] == '(')
{
int closing = value.IndexOf(')');
if (closing < 0)
{
break;
}
string number = value.Substring(1, closing - 1);
field_list.Add(number);
value = value.Substring(closing + 1).TrimStart('/', ' ');
string text = Genres.IndexToAudio(number);
if (text != null && value.StartsWith(text))
{
value = value.Substring(text.Length).TrimStart('/', ' ');
}
}
if (value.Length > 0)
{
field_list.AddRange(value.Split(new char[] { '/' }));
}
}
else
{
field_list.Add(value);
}
}
while (field_list.Count != 0 && string.IsNullOrEmpty(field_list[field_list.Count - 1]))
{
field_list.RemoveAt(field_list.Count - 1);
}
text_fields = field_list.ToArray();
}
