diff options
author | RincewindsHat <12514511+RincewindsHat@users.noreply.github.com> | 2023-01-31 14:46:01 +0100 |
---|---|---|
committer | RincewindsHat <12514511+RincewindsHat@users.noreply.github.com> | 2023-01-31 14:46:01 +0100 |
commit | e8bd88d1fcded01ccd066572eeaae1b507989cb3 (patch) | |
tree | c8e7be6c07c6f635f6e803e6a6ba9e7a95fee7c0 /gl/mbrtowc-impl-utf8.h | |
parent | 2ad962c13473607ca0d974bfaa516a0ed53ec73d (diff) | |
download | monitoring-plugins-e8bd88d1fcded01ccd066572eeaae1b507989cb3.tar.gz |
Sync with the latest Gnulib code 668c0b8ffa
Diffstat (limited to 'gl/mbrtowc-impl-utf8.h')
-rw-r--r-- | gl/mbrtowc-impl-utf8.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/gl/mbrtowc-impl-utf8.h b/gl/mbrtowc-impl-utf8.h new file mode 100644 index 00000000..4fdd65d8 --- /dev/null +++ b/gl/mbrtowc-impl-utf8.h | |||
@@ -0,0 +1,138 @@ | |||
1 | /* Convert multibyte character to wide character. | ||
2 | Copyright (C) 1999-2002, 2005-2023 Free Software Foundation, Inc. | ||
3 | |||
4 | This file is free software: you can redistribute it and/or modify | ||
5 | it under the terms of the GNU Lesser General Public License as | ||
6 | published by the Free Software Foundation; either version 2.1 of the | ||
7 | License, or (at your option) any later version. | ||
8 | |||
9 | This file is distributed in the hope that it will be useful, | ||
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | GNU Lesser General Public License for more details. | ||
13 | |||
14 | You should have received a copy of the GNU Lesser General Public License | ||
15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ | ||
16 | |||
17 | /* Written by Bruno Haible <bruno@clisp.org>, 2008. */ | ||
18 | |||
19 | /* This file contains the part of the body of the mbrtowc and mbrtoc32 functions | ||
20 | that handles the special case of the UTF-8 encoding. */ | ||
21 | |||
22 | /* Cf. unistr/u8-mbtouc.c. */ | ||
23 | unsigned char c = (unsigned char) p[0]; | ||
24 | |||
25 | if (c < 0x80) | ||
26 | { | ||
27 | if (pwc != NULL) | ||
28 | *pwc = c; | ||
29 | res = (c == 0 ? 0 : 1); | ||
30 | goto success; | ||
31 | } | ||
32 | if (c >= 0xc2) | ||
33 | { | ||
34 | if (c < 0xe0) | ||
35 | { | ||
36 | if (m == 1) | ||
37 | goto incomplete; | ||
38 | else /* m >= 2 */ | ||
39 | { | ||
40 | unsigned char c2 = (unsigned char) p[1]; | ||
41 | |||
42 | if ((c2 ^ 0x80) < 0x40) | ||
43 | { | ||
44 | if (pwc != NULL) | ||
45 | *pwc = ((unsigned int) (c & 0x1f) << 6) | ||
46 | | (unsigned int) (c2 ^ 0x80); | ||
47 | res = 2; | ||
48 | goto success; | ||
49 | } | ||
50 | } | ||
51 | } | ||
52 | else if (c < 0xf0) | ||
53 | { | ||
54 | if (m == 1) | ||
55 | goto incomplete; | ||
56 | else | ||
57 | { | ||
58 | unsigned char c2 = (unsigned char) p[1]; | ||
59 | |||
60 | if ((c2 ^ 0x80) < 0x40 | ||
61 | && (c >= 0xe1 || c2 >= 0xa0) | ||
62 | && (c != 0xed || c2 < 0xa0)) | ||
63 | { | ||
64 | if (m == 2) | ||
65 | goto incomplete; | ||
66 | else /* m >= 3 */ | ||
67 | { | ||
68 | unsigned char c3 = (unsigned char) p[2]; | ||
69 | |||
70 | if ((c3 ^ 0x80) < 0x40) | ||
71 | { | ||
72 | unsigned int wc = | ||
73 | (((unsigned int) (c & 0x0f) << 12) | ||
74 | | ((unsigned int) (c2 ^ 0x80) << 6) | ||
75 | | (unsigned int) (c3 ^ 0x80)); | ||
76 | |||
77 | if (FITS_IN_CHAR_TYPE (wc)) | ||
78 | { | ||
79 | if (pwc != NULL) | ||
80 | *pwc = wc; | ||
81 | res = 3; | ||
82 | goto success; | ||
83 | } | ||
84 | } | ||
85 | } | ||
86 | } | ||
87 | } | ||
88 | } | ||
89 | else if (c <= 0xf4) | ||
90 | { | ||
91 | if (m == 1) | ||
92 | goto incomplete; | ||
93 | else | ||
94 | { | ||
95 | unsigned char c2 = (unsigned char) p[1]; | ||
96 | |||
97 | if ((c2 ^ 0x80) < 0x40 | ||
98 | && (c >= 0xf1 || c2 >= 0x90) | ||
99 | && (c < 0xf4 || (/* c == 0xf4 && */ c2 < 0x90))) | ||
100 | { | ||
101 | if (m == 2) | ||
102 | goto incomplete; | ||
103 | else | ||
104 | { | ||
105 | unsigned char c3 = (unsigned char) p[2]; | ||
106 | |||
107 | if ((c3 ^ 0x80) < 0x40) | ||
108 | { | ||
109 | if (m == 3) | ||
110 | goto incomplete; | ||
111 | else /* m >= 4 */ | ||
112 | { | ||
113 | unsigned char c4 = (unsigned char) p[3]; | ||
114 | |||
115 | if ((c4 ^ 0x80) < 0x40) | ||
116 | { | ||
117 | unsigned int wc = | ||
118 | (((unsigned int) (c & 0x07) << 18) | ||
119 | | ((unsigned int) (c2 ^ 0x80) << 12) | ||
120 | | ((unsigned int) (c3 ^ 0x80) << 6) | ||
121 | | (unsigned int) (c4 ^ 0x80)); | ||
122 | |||
123 | if (FITS_IN_CHAR_TYPE (wc)) | ||
124 | { | ||
125 | if (pwc != NULL) | ||
126 | *pwc = wc; | ||
127 | res = 4; | ||
128 | goto success; | ||
129 | } | ||
130 | } | ||
131 | } | ||
132 | } | ||
133 | } | ||
134 | } | ||
135 | } | ||
136 | } | ||
137 | } | ||
138 | goto invalid; | ||