1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Text.RegularExpressions;
namespace Google.ProtocolBuffers
{
/// <summary>
/// Helpers for converting names to pascal case etc.
/// </summary>
public class NameHelpers
{
/// <summary>
/// All characters that are not alpha-numeric
/// </summary>
private static readonly Regex NonAlphaNumericCharacters = new Regex(@"[^a-zA-Z0-9]+");
/// <summary>
/// Matches lower-case character that follow either an underscore, or a number
/// </summary>
private static readonly Regex UnderscoreOrNumberWithLowerCase = new Regex(@"[0-9_][a-z]");
/// <summary>
/// Removes non alpha numeric characters while capitalizing letters that follow
/// a number or underscore. The first letter is always upper case.
/// </summary>
public static string UnderscoresToPascalCase(string input)
{
string name = UnderscoresToUpperCase(input);
// Pascal case always begins with upper-case letter
if (Char.IsLower(name[0]))
{
char[] chars = name.ToCharArray();
chars[0] = char.ToUpper(chars[0]);
return new string(chars);
}
return name;
}
/// <summary>
/// Removes non alpha numeric characters while capitalizing letters that follow
/// a number or underscore. The first letter is always lower case.
/// </summary>
public static string UnderscoresToCamelCase(string input)
{
string name = UnderscoresToUpperCase(input);
// Camel case always begins with lower-case letter
if (Char.IsUpper(name[0]))
{
char[] chars = name.ToCharArray();
chars[0] = char.ToLower(chars[0]);
return new string(chars);
}
return name;
}
/// <summary>
/// Capitalizes any characters following an '_' or a number '0' - '9' and removes
/// all non alpha-numeric characters. If the resulting string begins with a number
/// an '_' will be prefixed.
/// </summary>
private static string UnderscoresToUpperCase(string input)
{
string name = UnderscoreOrNumberWithLowerCase.Replace(input, x => x.Value.ToUpper());
name = NonAlphaNumericCharacters.Replace(name, String.Empty);
if (name.Length == 0)
{
throw new ArgumentException(String.Format("The field name '{0}' is invalid.", input));
}
// Fields can not start with a number
if (Char.IsNumber(name[0]))
{
name = '_' + name;
}
return name;
}
internal static string StripProto(string text)
{
if (!StripSuffix(ref text, ".protodevel"))
{
StripSuffix(ref text, ".proto");
}
return text;
}
/// <summary>
/// Attempts to strip a suffix from a string, returning whether
/// or not the suffix was actually present.
/// </summary>
public static bool StripSuffix(ref string text, string suffix)
{
if (text.EndsWith(suffix))
{
text = text.Substring(0, text.Length - suffix.Length);
return true;
}
return false;
}
}
}
|
