public static M3U8AttributeValueInstance <string> QuotedStringParser(M3U8Attribute attribute, string value)
{
if (value.Length < 2 || 34 != (int)value[0] || 34 != (int)value[value.Length - 1])
{
return((M3U8AttributeValueInstance <string>)null);
}
return((M3U8AttributeValueInstance <string>) new StringAttributeInstance(attribute, value.Substring(1, value.Length - 2)));
}
public static M3U8AttributeValueInstance<IEnumerable<string>> QuotedCsvParser(M3U8Attribute attribute, string value)
{
value = StripQuotes(value);
var values = value.Split(',').Select(s => s.Trim()).ToArray();
return new CsvStringsAttributeInstance(attribute, values);
}
public static M3U8AttributeValueInstance<string> QuotedStringParser(M3U8Attribute attribute, string value)
{
// TODO: Remove escape characters here. Fixup StringAttributeInstance.ToString() to match.
if (value.Length < 2 || '"' != value[0] || '"' != value[value.Length - 1])
{
// TODO: Complain...?
return null;
}
return new StringAttributeInstance(attribute, value.Substring(1, value.Length - 2));
}
public static M3U8AttributeInstance Create(M3U8Attribute attribute, string value)
{
var index = value.IndexOfAny(ResolutionSeparator);
if (index < 1 || index + 1 >= value.Length)
return null;
var x = int.Parse(value.Substring(0, index), CultureInfo.InvariantCulture);
var y = int.Parse(value.Substring(index + 1), CultureInfo.InvariantCulture);
return new ResolutionAttributeInstance(attribute, x, y);
}
public static M3U8AttributeInstance Create(M3U8Attribute attribute, string value)
{
int length = value.IndexOfAny(ResolutionAttributeInstance.ResolutionSeparator);
if (length < 1 || length + 1 >= value.Length)
{
return((M3U8AttributeInstance)null);
}
int x = int.Parse(value.Substring(0, length), (IFormatProvider)CultureInfo.InvariantCulture);
int y = int.Parse(value.Substring(length + 1), (IFormatProvider)CultureInfo.InvariantCulture);
return((M3U8AttributeInstance) new ResolutionAttributeInstance(attribute, x, y));
}
public static M3U8AttributeInstance Create(M3U8Attribute attribute, string value)
{
// TODO: Consolidate code between ByterangeAttributeInstance and ByterangeTagInstance
var index = value.IndexOf('@');
if (index < 0 || index + 1 >= value.Length)
return new ByterangeAttributeInstance(attribute, long.Parse(value, CultureInfo.InvariantCulture), null);
var length = long.Parse(value.Substring(0, index), CultureInfo.InvariantCulture);
var offset = long.Parse(value.Substring(index + 1), CultureInfo.InvariantCulture);
return new ByterangeAttributeInstance(attribute, length, offset);
}
public void Register(M3U8Attribute attribute)
{
var oldAttributes = _attributes;
for (;;)
{
var attributes = new Dictionary<string, M3U8Attribute>(oldAttributes);
attributes[attribute.Name] = attribute;
#pragma warning disable 0420
var currentAttributes = Interlocked.CompareExchange(ref _attributes, attributes, oldAttributes);
#pragma warning restore 0420
if (currentAttributes == oldAttributes)
return;
oldAttributes = currentAttributes;
}
}
public HexadecimalIntegerAttributeInstance(M3U8Attribute attribute, byte[] value)
: base(attribute, value)
{
}
public static M3U8AttributeValueInstance <byte[]> HexadecialIntegerParser(M3U8Attribute attribute, string value)
{
if (string.IsNullOrWhiteSpace(value))
{
return((M3U8AttributeValueInstance <byte[]>)null);
}
int num1 = value.IndexOf("0x", StringComparison.OrdinalIgnoreCase);
if (num1 < 0 || num1 + 2 >= value.Length)
{
return((M3U8AttributeValueInstance <byte[]>)null);
}
int num2 = num1 + 2;
List <byte> list = new List <byte>(16);
int num3 = 0;
bool flag = false;
for (int index = num2; index < value.Length; ++index)
{
char ch = value[index];
byte num4;
if ((int)ch >= 48 && (int)ch <= 57)
{
num4 = (byte)((uint)ch - 48U);
}
else if ((int)ch >= 97 && (int)ch <= 102)
{
num4 = (byte)((int)ch - 97 + 10);
}
else if ((int)ch >= 65 && (int)ch <= 70)
{
num4 = (byte)((int)ch - 65 + 10);
}
else
{
continue;
}
if (flag)
{
list.Add((byte)((uint)(num3 << 4) | (uint)num4));
flag = false;
}
else
{
num3 = (int)num4;
flag = true;
}
}
if (flag)
{
list.Add((byte)(num3 << 4));
int num4 = 0;
for (int index = 0; index < list.Count; ++index)
{
byte num5 = list[index];
list[index] = (byte)(num4 << 4 | (int)num5 >> 4);
num4 = (int)(byte)((uint)num5 & 15U);
}
}
return((M3U8AttributeValueInstance <byte[]>) new HexadecimalIntegerAttributeInstance(attribute, list.ToArray()));
}
public static M3U8AttributeValueInstance<long> DecimalIntegerParser(M3U8Attribute attribute, string value)
{
return new M3U8AttributeValueInstance<long>(attribute, long.Parse(value, CultureInfo.InvariantCulture));
}
public StringAttributeInstance(M3U8Attribute attribute, string value)
: base(attribute, value)
{
}
public static M3U8AttributeValueInstance <IEnumerable <string> > QuotedCsvParser(M3U8Attribute attribute, string value)
{
value = M3U8AttributeSupport.StripQuotes(value);
string[] strArray = Enumerable.ToArray <string>(Enumerable.Select <string, string>((IEnumerable <string>)value.Split(','), (Func <string, string>)(s => s.Trim())));
return((M3U8AttributeValueInstance <IEnumerable <string> >) new CsvStringsAttributeInstance(attribute, (IEnumerable <string>)strArray));
}
public M3U8AttributeInstance(M3U8Attribute attribute)
{
this.Attribute = attribute;
}
public static M3U8AttributeValueInstance <long> DecimalIntegerParser(M3U8Attribute attribute, string value)
{
return(new M3U8AttributeValueInstance <long>(attribute, long.Parse(value, (IFormatProvider)CultureInfo.InvariantCulture)));
}
public CsvStringsAttributeInstance(M3U8Attribute attribute, IEnumerable <string> codecs)
: base(attribute, codecs)
{
}
public ResolutionAttributeInstance(M3U8Attribute attribute, int x, int y)
: base(attribute)
{
X = x;
Y = y;
}
/// <summary>
/// Parse "hexadecimal-integer" consisting of 0x or 0X followed by 1..n
/// </summary>
/// <param name="attribute"></param>
/// <param name="value"></param>
/// <returns></returns>
public static M3U8AttributeValueInstance<byte[]> HexadecialIntegerParser(M3U8Attribute attribute, string value)
{
if (string.IsNullOrWhiteSpace(value))
return null;
var start = value.IndexOf("0x", StringComparison.OrdinalIgnoreCase);
if (start < 0 || start + 2 >= value.Length)
return null;
start += 2;
var bytes = new List<byte>(16);
var currentNibble = 0;
var haveNibble = false;
for (var i = start; i < value.Length; ++i)
{
var c = value[i];
byte v;
if (c >= '0' && c <= '9')
v = (byte)(c - '0');
else if (c >= 'a' && c <= 'f')
v = (byte)(c - 'a' + 10);
else if (c >= 'A' && c <= 'F')
v = (byte)(c - 'A' + 10);
else
{
// Skip everything else or fail?
// Are spaces okay?
continue;
}
if (haveNibble)
{
bytes.Add((byte)((currentNibble << 4) | v));
haveNibble = false;
}
else
{
currentNibble = v;
haveNibble = true;
}
}
if (haveNibble)
{
// We now discover that we actually needed a leading zero when we first started...
bytes.Add((byte)(currentNibble << 4));
currentNibble = 0;
for (var i = 0; i < bytes.Count; ++i)
{
var b = bytes[i];
bytes[i] = (byte)((currentNibble << 4) | (b >> 4));
currentNibble = (byte)(b & 0x0f);
}
}
return new HexadecimalIntegerAttributeInstance(attribute, bytes.ToArray());
}
public ByterangeAttributeInstance(M3U8Attribute attribute, long length, long? offset)
: base(attribute)
{
Length = length;
Offset = offset;
}
public ResolutionAttributeInstance(M3U8Attribute attribute, int x, int y)
: base(attribute)
{
this.X = x;
this.Y = y;
}
public M3U8AttributeValueInstance(M3U8Attribute attribute, TValue value)
: base(attribute)
{
this.Value = value;
}
public M3U8AttributeInstance(M3U8Attribute attribute)
{
Attribute = attribute;
}