private bool TryEnsureBytes(int count)
{
if (this.stream == null)
{
return(false);
}
if (this.offset > (0x7fffffff - count))
{
XmlExceptionHelper.ThrowMaxBytesPerReadExceeded(this.reader, this.windowOffsetMax - this.windowOffset);
}
int num = this.offset + count;
if (num >= this.offsetMax)
{
int num3;
if (num > this.windowOffsetMax)
{
XmlExceptionHelper.ThrowMaxBytesPerReadExceeded(this.reader, this.windowOffsetMax - this.windowOffset);
}
if (num > this.buffer.Length)
{
byte[] dst = new byte[Math.Max(num, this.buffer.Length * 2)];
System.Buffer.BlockCopy(this.buffer, 0, dst, 0, this.offsetMax);
this.buffer = dst;
this.streamBuffer = dst;
}
for (int i = num - this.offsetMax; i > 0; i -= num3)
{
num3 = this.stream.Read(this.buffer, this.offsetMax, i);
if (num3 == 0)
{
return(false);
}
this.offsetMax += num3;
}
}
return(true);
}
private bool TryEnsureByte()
{
if (this.stream == null)
{
return(false);
}
if (this.offsetMax >= this.windowOffsetMax)
{
XmlExceptionHelper.ThrowMaxBytesPerReadExceeded(this.reader, this.windowOffsetMax - this.windowOffset);
}
if (this.offsetMax >= this.buffer.Length)
{
return(this.TryEnsureBytes(1));
}
int num = this.stream.ReadByte();
if (num == -1)
{
return(false);
}
this.buffer[this.offsetMax++] = (byte)num;
return(true);
}
private void ReadAttributes()
{
int num5;
int num6;
byte[] buffer;
XmlBaseReader.XmlAttributeNode node;
int num = 0;
if (this.buffered)
{
num = base.BufferReader.Offset;
}
Label_0016:
this.ReadQualifiedName(this.prefix, this.localName);
if (base.BufferReader.GetByte() != 0x3d)
{
this.SkipWhitespace();
if (base.BufferReader.GetByte() != 0x3d)
{
XmlExceptionHelper.ThrowTokenExpected(this, "=", (char)base.BufferReader.GetByte());
}
}
base.BufferReader.SkipByte();
byte @byte = base.BufferReader.GetByte();
if ((@byte != 0x22) && (@byte != 0x27))
{
this.SkipWhitespace();
@byte = base.BufferReader.GetByte();
if ((@byte != 0x22) && (@byte != 0x27))
{
XmlExceptionHelper.ThrowTokenExpected(this, "\"", (char)base.BufferReader.GetByte());
}
}
base.BufferReader.SkipByte();
bool escaped = false;
int offset = base.BufferReader.Offset;
Label_00CF:
buffer = base.BufferReader.GetBuffer(out num5, out num6);
int count = this.ReadAttributeText(buffer, num5, num6);
base.BufferReader.Advance(count);
byte index = base.BufferReader.GetByte();
if (index != @byte)
{
if (index == 0x26)
{
this.ReadCharRef();
escaped = true;
}
else if ((index == 0x27) || (index == 0x22))
{
base.BufferReader.SkipByte();
}
else if (((index == 10) || (index == 13)) || (index == 9))
{
base.BufferReader.SkipByte();
escaped = true;
}
else if (index == 0xef)
{
this.ReadNonFFFE();
}
else
{
XmlExceptionHelper.ThrowTokenExpected(this, ((char)@byte).ToString(), (char)index);
}
goto Label_00CF;
}
int length = base.BufferReader.Offset - offset;
if (this.prefix.IsXmlns)
{
XmlBaseReader.Namespace ns = base.AddNamespace();
this.localName.ToPrefixHandle(ns.Prefix);
ns.Uri.SetValue(offset, length, escaped);
node = base.AddXmlnsAttribute(ns);
}
else if (this.prefix.IsEmpty && this.localName.IsXmlns)
{
XmlBaseReader.Namespace namespace3 = base.AddNamespace();
namespace3.Prefix.SetValue(PrefixHandleType.Empty);
namespace3.Uri.SetValue(offset, length, escaped);
node = base.AddXmlnsAttribute(namespace3);
}
else if (this.prefix.IsXml)
{
node = base.AddXmlAttribute();
node.Prefix.SetValue(this.prefix);
node.LocalName.SetValue(this.localName);
node.Value.SetValue(escaped ? ValueHandleType.EscapedUTF8 : ValueHandleType.UTF8, offset, length);
base.FixXmlAttribute(node);
}
else
{
node = base.AddAttribute();
node.Prefix.SetValue(this.prefix);
node.LocalName.SetValue(this.localName);
node.Value.SetValue(escaped ? ValueHandleType.EscapedUTF8 : ValueHandleType.UTF8, offset, length);
}
node.QuoteChar = (char)@byte;
base.BufferReader.SkipByte();
index = base.BufferReader.GetByte();
bool flag2 = false;
while ((charType[index] & 4) != 0)
{
flag2 = true;
base.BufferReader.SkipByte();
index = base.BufferReader.GetByte();
}
switch (index)
{
case 0x3e:
case 0x2f:
case 0x3f:
if (this.buffered && ((base.BufferReader.Offset - num) > this.maxBytesPerRead))
{
XmlExceptionHelper.ThrowMaxBytesPerReadExceeded(this, this.maxBytesPerRead);
}
base.ProcessAttributes();
return;
}
if (!flag2)
{
XmlExceptionHelper.ThrowXmlException(this, new XmlException(System.Runtime.Serialization.SR.GetString("XmlSpaceBetweenAttributes")));
}
goto Label_0016;
}