1 | #Region "Microsoft.VisualBasic::2752fb765f45d7cba9688fcd6c357296, Microsoft.VisualBasic.Core\ComponentModel\DataStructures\Tree\BinaryTree\Extensions.vb" |
2 | |
3 | ' Author: |
4 | ' |
5 | ' asuka (amethyst.asuka@gcmodeller.org) |
6 | ' xie (genetics@smrucc.org) |
7 | ' xieguigang (xie.guigang@live.com) |
8 | ' |
9 | ' Copyright (c) 2018 GPL3 Licensed |
10 | ' |
11 | ' |
12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
13 | ' |
14 | ' |
15 | ' This program is free software: you can redistribute it and/or modify |
16 | ' it under the terms of the GNU General Public License as published by |
17 | ' the Free Software Foundation, either version 3 of the License, or |
18 | ' (at your option) any later version. |
19 | ' |
20 | ' This program is distributed in the hope that it will be useful, |
21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | ' GNU General Public License for more details. |
24 | ' |
25 | ' You should have received a copy of the GNU General Public License |
26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
27 | |
28 | |
29 | |
30 | ' /********************************************************************************/ |
31 | |
32 | ' Summaries: |
33 | |
34 | ' Module Extensions |
35 | ' |
36 | ' Function: NameCompare, NameFuzzyMatch |
37 | ' |
38 | ' |
39 | ' /********************************************************************************/ |
40 | |
41 | #End Region |
42 | |
43 | Imports sys = System.Math |
44 | |
45 | Namespace ComponentModel.DataStructures.BinaryTree |
46 | |
47 | Public Module Extensions |
48 | |
49 | ''' <summary> |
50 | ''' 字符串名字的比较规则: |
51 | ''' |
52 | ''' 假若字符串是空值或者空字符串,则该变量小 |
53 | ''' 假若字符串相等(忽略大小写),则变量值一样 |
54 | ''' 最后逐个字符进行比较,按照字母的charcode大小来比较,第一个charcode大的变量大 |
55 | ''' </summary> |
56 | ''' <param name="a$"></param> |
57 | ''' <param name="b$"></param> |
58 | ''' <returns></returns> |
59 | Public Function NameCompare(a$, b$) As Integer |
60 | Dim null1 = String.IsNullOrEmpty(a) |
61 | Dim null2 = String.IsNullOrEmpty(b) |
62 | |
63 | If null1 AndAlso null2 Then |
64 | Return 0 |
65 | ElseIf null1 Then |
66 | Return -1 |
67 | ElseIf null2 Then |
68 | Return 1 |
69 | ElseIf String.Equals(a, b, StringComparison.OrdinalIgnoreCase) Then |
70 | Return 0 |
71 | Else |
72 | |
73 | Dim minl = sys.Min(a.Length, b.Length) |
74 | Dim c1, c2 As Char |
75 | |
76 | For i As Integer = 0 To minl - 1 |
77 | c1 = Char.ToLower(a.Chars(i)) |
78 | c2 = Char.ToLower(b.Chars(i)) |
79 | |
80 | If c1 <> c2 Then |
81 | Return c1.CompareTo(c2) |
82 | End If |
83 | Next |
84 | |
85 | If a.Length < b.Length Then |
86 | Return -1 |
87 | Else |
88 | Return 1 |
89 | End If |
90 | End If |
91 | End Function |
92 | |
93 | ''' <summary> |
94 | ''' The term index search engine. |
95 | ''' |
96 | ''' + If the string similarity less than threshold, then will returns negative value |
97 | ''' + If the string similarity greater than threshold, then will returns positive value |
98 | ''' + If the string text equals to other, then will reutrns ZERO |
99 | ''' </summary> |
100 | ''' <param name="a$"></param> |
101 | ''' <param name="b$"></param> |
102 | ''' <returns></returns> |
103 | Public Function NameFuzzyMatch(a$, b$) As Integer |
104 | Dim similarity = Text.Levenshtein.ComputeDistance(a, b) |
105 | |
106 | If a.TextEquals(b) Then |
107 | Return 0 |
108 | ElseIf similarity Is Nothing Then |
109 | Return -1 |
110 | ElseIf similarity.MatchSimilarity < 0.6 Then |
111 | Return -1 |
112 | Else |
113 | Return 1 |
114 | End If |
115 | End Function |
116 | End Module |
117 | End Namespace |