public static AreaResult Search(string area)
{
if (string.IsNullOrWhiteSpace(area))
{
return(null);
}
string key = area;
var lastChar = area[area.Length - 1];
if (area.Length > 2 && "市省县区州旗盟".Contains(lastChar))
{
key = area.Substring(0, area.Length - 1);
var ai = _trie.GetOrDefault(key);
if (ai == null)
{
return(null);
}
var tuple = ai.Match(area.Substring(area.Length - 1));
var ar = new AreaResult();
if (tuple != null)
{
ar.AccurateCodes = tuple.Item2;
return(ar);
}
var newMap = new Dictionary <string, List <string> >();
foreach (var p in ai.MatchAll())
{
var k = key + p.Key;
newMap[k] = p.Value;
}
ar.Name_Codes_Map = newMap;
return(ar);
}
var ai1 = _trie.GetOrDefault(area);
if (ai1 == null)
{
return(null);
}
var newMap1 = new Dictionary <string, List <string> >();
foreach (var p in ai1.MatchAll())
{
var k = key + p.Key;
newMap1[k] = p.Value;
}
return(new AreaResult()
{
Name_Codes_Map = newMap1
});
}
public static int GetFreq(string key) => _trie.GetOrDefault(key);
public static WordAttr GetAttr(string key) => _trie.GetOrDefault(key);
public static string Get(string key) => _trie.GetOrDefault(key);
public byte[] Encode(string com_name)
{
var terms = Com_CRFSegment.Segment(com_name);
var sb = new StringBuilder(com_name.Length * 8);
byte count = 0;
var flags = new List <char>();
for (int i = 0; i < terms.Count; i++)
{
var term = terms[i];
if (term.nc == NatCom.E || term.nc == NatCom.W || term.word.Any(c => c < 128))
{
count += (byte)term.word.Length;
foreach (var c in term.word)
{
sb.Append(Convert.ToString(c, 2).PadLeft(16, '0'));
flags.Add('0');
}
}
else
{
var val = _dat.GetOrDefault(term.word);
if (val == null)
{
count += (byte)term.word.Length;
foreach (var c in term.word)
{
var temp_s = Convert.ToString(c, 2).PadLeft(16, '0');
sb.Append(temp_s /*.Substring(16)*/);
flags.Add('0');
}
}
else
{
count++;
sb.Append(val);
flags.Add('1');
}
}
}
if (count > 63)
{
throw new Exception("Length of company name is larger than 63");
}
// word 数量固定占用6bit，故word数量不能超过63
// 前缀 bit 数
//var prefix_len = count + 6;
var prefix_str = Convert.ToString(count, 2).PadLeft(6, '0') + new string(flags.ToArray());
// 所有的数据二进制的字符串形式
var data_str = prefix_str + sb.ToString();
// 缺少的 bit 数，填充为 8 的整数倍
var lack = data_str.Length % 8 == 0 ? 0 : 8 - (data_str.Length % 8);
for (int j = 0; j < lack; j++)
{
data_str += "0";
}
var bs = new byte[data_str.Length / 8];
for (int j = 0; j < bs.Length; j++)
{
bs[j] = Convert.ToByte(data_str.Substring(j * 8, 8), 2);
}
return(bs);
}
