/// <summary>
/// Parses a string to the query data.
/// </summary>
/// <param name="query">The query string.</param>
/// <param name="append">true if append instead of override; otherwise, false.</param>
/// <param name="encoding">The optional encoding.</param>
/// <returns>The count of query item added.</returns>
/// <exception cref="FormatException">The format is not correct.</exception>
public int ParseSet(string query, bool append = false, Encoding encoding = null)
{
if (!append)
{
Clear();
}
if (string.IsNullOrWhiteSpace(query))
{
return(0);
}
var queryTrim = query.TrimStart();
if (queryTrim.IndexOf('{') == 0)
{
queryTrim = queryTrim.Substring(1).Trim();
var lastPos = queryTrim.LastIndexOf('}');
if (lastPos >= 0)
{
queryTrim = queryTrim.Substring(0, lastPos);
}
var count = 0;
string name = null;
StringBuilder sb = null;
var level = new List <char>();
StringBuilder backSlash = null;
bool ignoreRest = false;
bool lastBackSlash = false;
foreach (var c in queryTrim)
{
if (ignoreRest)
{
switch (c)
{
case '\r':
case '\n':
ignoreRest = false;
break;
}
lastBackSlash = false;
continue;
}
if (c == '\\')
{
if (lastBackSlash)
{
sb.Append(c);
}
else
{
backSlash = new StringBuilder();
}
lastBackSlash = !lastBackSlash;
continue;
}
lastBackSlash = false;
if (backSlash != null)
{
if (StringExtensions.ReplaceBackSlash(sb, backSlash, c))
{
backSlash = null;
}
continue;
}
if (sb == null)
{
if (c == '/')
{
ignoreRest = true;
continue;
}
if (c == '"')
{
sb = new StringBuilder();
level.Add('"');
continue;
}
if (name == null)
{
if (NameChars.IndexOf(c) > -1)
{
sb = new StringBuilder();
level.Add(':');
sb.Append(c);
}
continue;
}
if (c == '{')
{
level.Add('}');
}
else if (c == '[')
{
level.Add(']');
}
else if (NumBoolChars.IndexOf(c) > -1)
{
level.Add(',');
}
else
{
continue;
}
sb = new StringBuilder();
sb.Append(c);
continue;
}
if (level.Count == 0)
{
continue;
}
var lastLevelChar = level[level.Count - 1];
if (c == lastLevelChar)
{
level.RemoveAt(level.Count - 1);
if (name == null)
{
name = sb.ToString();
sb = null;
continue;
}
else if (level.Count == 0)
{
if (c == ',')
{
var sbStr = sb.ToString().Trim();
sb = new StringBuilder(sbStr);
if (sbStr == "null" || sbStr == "undefined")
{
name = null;
sb = null;
continue;
}
}
else if (c == '"')
{
}
else
{
sb.Append(c);
}
ListExtensions.Add(this, name, sb.ToString());
name = null;
sb = null;
continue;
}
}
else if (lastLevelChar == ':' && name == null)
{
if (c == '\r' || c == '\n' || c == '\t' || c == ' ' || c == ',' || c == '+')
{
sb = null;
}
else if (c == '/')
{
sb = null;
ignoreRest = true;
}
else if (NameChars.IndexOf(c) < 0)
{
throw new FormatException("The format of query string is not correct.");
}
if (sb == null)
{
level.RemoveAt(level.Count - 1);
continue;
}
}
else if (c == '"')
{
level.Add('"');
}
else if (lastLevelChar != '"')
{
if (c == '{')
{
level.Add('}');
}
else if (c == '[')
{
level.Add(']');
}
}
if (sb == null)
{
sb = new StringBuilder();
}
sb.Append(c);
}
if (!string.IsNullOrWhiteSpace(name) && sb != null)
{
var sbStr = sb.ToString().Trim();
if (sbStr != "null" && sbStr != "undefined")
{
ListExtensions.Add(this, name, sbStr);
}
}
return(count);
}
if (encoding == null)
{
encoding = DefaultEncoding ?? Encoding.UTF8;
}
var pos = query.IndexOf("?");
if (pos >= 0)
{
query = query.Substring(pos + 1);
}
pos = query.IndexOf("#");
if (pos >= 0)
{
query = query.Substring(0, pos);
}
var arr = query.Split('&', '\r', '\n');
foreach (var item in arr)
{
pos = item.IndexOf("=");
if (pos < 0)
{
if (item.Length == 0)
{
continue;
}
ListExtensions.Add(this, WebFormat.UrlDecode(item, encoding), string.Empty);
}
else
{
var key = item.Substring(0, pos);
var value = item.Substring(pos + 1);
if (key.Length == 0 && value.Length == 0)
{
continue;
}
ListExtensions.Add(this, WebFormat.UrlDecode(key, encoding), WebFormat.UrlDecode(value, encoding));
}
}
return(arr.Length);
}
