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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Kay Sievers | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | /* | |
23 | * Concatenates/copies strings. In any case, terminates in all cases | |
24 | * with '\0' * and moves the @dest pointer forward to the added '\0'. | |
25 | * Returns the * remaining size, and 0 if the string was truncated. | |
26 | */ | |
27 | ||
28 | #include <stdio.h> | |
29 | #include <string.h> | |
cf0fbc49 | 30 | |
d5a89d7d KS |
31 | #include "strxcpyx.h" |
32 | ||
f168c273 | 33 | size_t strpcpy(char **dest, size_t size, const char *src) { |
d5a89d7d KS |
34 | size_t len; |
35 | ||
36 | len = strlen(src); | |
37 | if (len >= size) { | |
38 | if (size > 1) | |
39 | *dest = mempcpy(*dest, src, size-1); | |
40 | size = 0; | |
41 | } else { | |
42 | if (len > 0) { | |
43 | *dest = mempcpy(*dest, src, len); | |
44 | size -= len; | |
45 | } | |
46 | } | |
47 | *dest[0] = '\0'; | |
48 | return size; | |
49 | } | |
50 | ||
f168c273 | 51 | size_t strpcpyf(char **dest, size_t size, const char *src, ...) { |
d5a89d7d KS |
52 | va_list va; |
53 | int i; | |
54 | ||
55 | va_start(va, src); | |
56 | i = vsnprintf(*dest, size, src, va); | |
57 | if (i < (int)size) { | |
58 | *dest += i; | |
59 | size -= i; | |
60 | } else { | |
61 | *dest += size; | |
62 | size = 0; | |
63 | } | |
64 | va_end(va); | |
65 | *dest[0] = '\0'; | |
66 | return size; | |
67 | } | |
68 | ||
f168c273 | 69 | size_t strpcpyl(char **dest, size_t size, const char *src, ...) { |
d5a89d7d KS |
70 | va_list va; |
71 | ||
72 | va_start(va, src); | |
73 | do { | |
74 | size = strpcpy(dest, size, src); | |
75 | src = va_arg(va, char *); | |
76 | } while (src != NULL); | |
77 | va_end(va); | |
78 | return size; | |
79 | } | |
80 | ||
f168c273 | 81 | size_t strscpy(char *dest, size_t size, const char *src) { |
d5a89d7d KS |
82 | char *s; |
83 | ||
84 | s = dest; | |
85 | return strpcpy(&s, size, src); | |
86 | } | |
87 | ||
88 | size_t strscpyl(char *dest, size_t size, const char *src, ...) { | |
89 | va_list va; | |
90 | char *s; | |
91 | ||
92 | va_start(va, src); | |
93 | s = dest; | |
94 | do { | |
95 | size = strpcpy(&s, size, src); | |
96 | src = va_arg(va, char *); | |
97 | } while (src != NULL); | |
98 | va_end(va); | |
99 | ||
100 | return size; | |
101 | } |