Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/bash/src/lib/sh/wcsnwidth.c |
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1 | /* wcsnwidth.c - compute display width of wide character string, up to max | - | ||||||||||||
2 | specified width, return length. */ | - | ||||||||||||
3 | - | |||||||||||||
4 | /* Copyright (C) 2012 Free Software Foundation, Inc. | - | ||||||||||||
5 | - | |||||||||||||
6 | This file is part of GNU Bash, the Bourne Again SHell. | - | ||||||||||||
7 | - | |||||||||||||
8 | Bash is free software: you can redistribute it and/or modify | - | ||||||||||||
9 | it under the terms of the GNU General Public License as published by | - | ||||||||||||
10 | the Free Software Foundation, either version 3 of the License, or | - | ||||||||||||
11 | (at your option) any later version. | - | ||||||||||||
12 | - | |||||||||||||
13 | Bash is distributed in the hope that it will be useful, | - | ||||||||||||
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | - | ||||||||||||
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | - | ||||||||||||
16 | GNU General Public License for more details. | - | ||||||||||||
17 | - | |||||||||||||
18 | You should have received a copy of the GNU General Public License | - | ||||||||||||
19 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | - | ||||||||||||
20 | */ | - | ||||||||||||
21 | - | |||||||||||||
22 | #include <config.h> | - | ||||||||||||
23 | - | |||||||||||||
24 | #if defined (HANDLE_MULTIBYTE) | - | ||||||||||||
25 | - | |||||||||||||
26 | #include <stdc.h> | - | ||||||||||||
27 | #include <wchar.h> | - | ||||||||||||
28 | #include <bashansi.h> | - | ||||||||||||
29 | - | |||||||||||||
30 | /* Return the number of wide characters that will be displayed from wide string | - | ||||||||||||
31 | PWCS. If the display width exceeds MAX, return the number of wide chars | - | ||||||||||||
32 | from PWCS required to display MAX characters on the screen. */ | - | ||||||||||||
33 | int | - | ||||||||||||
34 | wcsnwidth(pwcs, n, max) | - | ||||||||||||
35 | const wchar_t *pwcs; | - | ||||||||||||
36 | size_t n, max; | - | ||||||||||||
37 | { | - | ||||||||||||
38 | wchar_t wc, *ws; | - | ||||||||||||
39 | int len, l; | - | ||||||||||||
40 | - | |||||||||||||
41 | len = 0; | - | ||||||||||||
42 | ws = (wchar_t *)pwcs; | - | ||||||||||||
43 | while (n-- > 0 && (wc = *ws++) != L'\0')
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44 | { | - | ||||||||||||
45 | l = wcwidth (wc); | - | ||||||||||||
46 | if (l < 0)
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47 | return (-1); never executed: return (-1); | 0 | ||||||||||||
48 | else if (l == max - len)
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49 | return (ws - pwcs); never executed: return (ws - pwcs); | 0 | ||||||||||||
50 | else if (l > max - len)
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51 | return (--ws - pwcs); never executed: return (--ws - pwcs); | 0 | ||||||||||||
52 | len += l; | - | ||||||||||||
53 | } never executed: end of block | 0 | ||||||||||||
54 | return (ws - pwcs); never executed: return (ws - pwcs); | 0 | ||||||||||||
55 | } | - | ||||||||||||
56 | #endif | - | ||||||||||||
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