| public static ReadUtf8 ( Stream stream, int bytesCount, StringBuilder builder, bool replace ) : int | ||
| stream | Stream | |
| bytesCount | int | |
| builder | StringBuilder | |
| replace | bool | |
| return | int | |
private static CBORObject ReadString(Stream stream, char firstChar)
{
var builder = new StringBuilder();
if (firstChar < (int)'0' && firstChar > (int)'9')
{
throw new CBORException("Invalid integer encoding");
}
builder.Append(firstChar);
while (true)
{
int c = stream.ReadByte();
if (c < 0)
{
throw new CBORException("Premature end of data");
}
if (c >= (int)'0' && c <= (int)'9')
{
builder.Append((char)c);
}
else if (c == (int)':')
{
break;
}
else
{
throw new CBORException("Invalid integer encoding");
}
}
string s = builder.ToString();
if (s.Length >= 2 && s[0] == '0' && s[1] == '0')
{
throw new CBORException("Invalid integer encoding");
}
EInteger numlength = EInteger.FromString(s);
if (!numlength.CanFitInInt32())
{
throw new CBORException("Length too long");
}
builder = new StringBuilder();
switch (DataUtilities.ReadUtf8(
stream,
numlength.ToInt32Checked(),
builder,
false))
{
case -2:
throw new CBORException("Premature end of data");
case -1:
throw new CBORException("Invalid UTF-8");
}
return(CBORObject.FromObject(builder.ToString()));
}
private static CBORObject readString(Stream stream, char firstChar)
{
var builder = new StringBuilder();
if (firstChar < (int)'0' && firstChar > (int)'9')
{
throw new CBORException("Invalid integer encoding");
}
builder.Append(firstChar);
while (true)
{
int c = stream.ReadByte();
if (c < 0)
{
throw new CBORException("Premature end of data");
}
if (c >= (int)'0' && c <= (int)'9')
{
builder.Append((char)c);
}
else if (c == (int)':')
{
break;
}
else
{
throw new CBORException("Invalid integer encoding");
}
}
CBORObject number = CBORDataUtilities.ParseJSONNumber(
builder.ToString(),
true,
true);
var length = 0;
try {
length = number.AsInt32();
} catch (ArithmeticException ex) {
throw new CBORException("Length too long", ex);
}
builder = new StringBuilder();
switch (DataUtilities.ReadUtf8(stream, length, builder, false))
{
case -2:
throw new CBORException("Premature end of data");
case -1:
throw new CBORException("Invalid UTF-8");
}
return(CBORObject.FromObject(builder.ToString()));
}
/// <include file='../docs.xml'
/// path='docs/doc[@name="M:PeterO.DataUtilities.ReadUtf8ToString(System.IO.Stream,System.Int32,System.Boolean)"]/*'/>
public static string ReadUtf8ToString(
Stream stream,
int bytesCount,
bool replace)
{
var builder = new StringBuilder();
if (DataUtilities.ReadUtf8(stream, bytesCount, builder, replace) == -1)
{
throw new IOException(
"Unpaired surrogate code point found.",
new ArgumentException("Unpaired surrogate code point found."));
}
return(builder.ToString());
}
