/// <summary> 读取从当前位置到终止字符之间的数据
/// </summary>
/// <param name="stop">终止字符</param>
/// <param name="mode">读取模式</param>
public string ReadToStop(Func <char, bool> stopCharMatch, ReadMode mode = ReadMode.SkipAll | ReadMode.RemoveStop | ReadMode.AllowToEnd)
{
ReadNext(mode | ReadMode.ReserveStop);
int startIndex = Position;
int stopIndex;
var parse = 0 != (mode & ReadMode.ParseAll);
do
{
if (parse && Current == '\\')
{
var str = new QuickStringWriter();
str.Append(_rawCharArray, startIndex, Position - startIndex);
foreach (var s in ReadParseString(stopCharMatch, mode))
{
str.Append(s);
}
return(str.ToString());
}
if (stopCharMatch(Current))
{
if (CheckAnd(mode, ReadMode.RemoveStop))
{
stopIndex = Position;
}
else
{
stopIndex = Position + 1;
}
if (CheckAnd(mode, ReadMode.ReserveStop) == false)
{
ReadNext();
}
if (CheckAnd(mode, ReadMode.RemoveStart))
{
startIndex++;
}
return(new string(_rawCharArray, startIndex, stopIndex - startIndex));
}
} while (ReadNext());
if ((mode & ReadMode.AllowToEnd) == 0)
{
throw new NotSupportedException("已达字符串结尾");
}
else
{
return(new string(_rawCharArray, startIndex, Length - startIndex));
}
}
/// <summary>
/// 将对象转换为Json字符串
/// </summary>
/// <param name="obj"> </param>
/// <param name="settings"> 序列化Json字符串时使用的设置参数 </param>
public static string ToJsonString(this object obj, JsonBuilderSettings settings)
{
using (var buffer = new QuickStringWriter(4096))
{
var args = new JsonWriterArgs(WriterContainer, buffer, settings);
if (obj == null || obj is DBNull)
{
WriterContainer.GetNullWriter().Write(null, args);
return(buffer.ToString());
}
var writer = WriterContainer.GetWriter(obj.GetType());
writer.Write(obj, args);
return(buffer.ToString());
}
}
/// <summary> 将对象转换为Json字符串
/// </summary>
public string ToJsonString(object obj)
{
if (obj == null || obj is DBNull)
{
return("null");
}
using (Buffer = new QuickStringWriter(4096))
{
if (CheckLoopRef)
{
_loopObject = new ArrayList(32);
}
AppendObject(obj);
var json = Buffer.ToString();
_loopObject = null;
return(json);
}
}
public static string EscapeString(string str)
{
var size = str.Length * 2;
if (size > ushort.MaxValue)
{
size = ushort.MaxValue;
}
QuickStringWriter buffer = null;
try
{
unsafe
{
var length = str.Length;
fixed(char *fp = str)
{
char *p = fp;
char *end = fp + length;
char *flag = fp;
while (p < end)
{
char c = *p;
switch (c)
{
case '\\':
case '"':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size).Append('"');
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
flag = p;
break;
case '\n':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('n');
flag = p + 1;
break;
case '\r':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('r');
flag = p + 1;
break;
case '\t':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('t');
flag = p + 1;
break;
case '\f':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('f');
flag = p + 1;
break;
case '\0':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('0');
flag = p + 1;
break;
case '\a':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('a');
flag = p + 1;
break;
case '\b':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('b');
flag = p + 1;
break;
case '\v':
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size);
}
buffer.Append(flag, 0, (int)(p - flag));
buffer.Append('\\');
buffer.Append('v');
flag = p + 1;
break;
default:
break;
}
p++;
}
if (flag == fp)
{
if (buffer == null)
{
return(str);
}
buffer.Append(fp, 0, length);
}
else if (p > flag)
{
if (buffer == null)
{
buffer = new QuickStringWriter((ushort)size).Append('"');
}
buffer.Append(flag, 0, (int)(p - flag));
}
}
}
return(buffer.ToString());
}
finally
{
if (buffer != null)
{
buffer.Dispose();
}
}
}