1 | // Scintilla source code edit control |
2 | /** @file CharacterType.cxx |
3 | ** Tests for character type and case-insensitive comparisons. |
4 | **/ |
5 | // Copyright 1998-2010 by Neil Hodgson <neilh@scintilla.org> |
6 | // The License.txt file describes the conditions under which this software may be distributed. |
7 | |
8 | #include <cstdlib> |
9 | #include <cassert> |
10 | |
11 | #include "CharacterType.h" |
12 | |
13 | using namespace Scintilla::Internal; |
14 | |
15 | namespace Scintilla::Internal { |
16 | |
17 | int CompareCaseInsensitive(const char *a, const char *b) noexcept { |
18 | while (*a && *b) { |
19 | if (*a != *b) { |
20 | const char upperA = MakeUpperCase(*a); |
21 | const char upperB = MakeUpperCase(*b); |
22 | if (upperA != upperB) |
23 | return upperA - upperB; |
24 | } |
25 | a++; |
26 | b++; |
27 | } |
28 | // Either *a or *b is nul |
29 | return *a - *b; |
30 | } |
31 | |
32 | int CompareNCaseInsensitive(const char *a, const char *b, size_t len) noexcept { |
33 | while (*a && *b && len) { |
34 | if (*a != *b) { |
35 | const char upperA = MakeUpperCase(*a); |
36 | const char upperB = MakeUpperCase(*b); |
37 | if (upperA != upperB) |
38 | return upperA - upperB; |
39 | } |
40 | a++; |
41 | b++; |
42 | len--; |
43 | } |
44 | if (len == 0) |
45 | return 0; |
46 | else |
47 | // Either *a or *b is nul |
48 | return *a - *b; |
49 | } |
50 | |
51 | } |
52 | |