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
|
/*
* libmowgli: A collection of useful routines for programming.
* mowgli_string.c: Immutable string buffers with cheap manipulation.
*
* Copyright (c) 2007 William Pitcock <nenolod -at- sacredspiral.co.uk>
* Copyright (c) 2007 Pippijn van Steenhoven <pippijn -at- one09.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include "mowgli.h"
mowgli_string_t *mowgli_string_create(void)
{
mowgli_string_t *self = mowgli_alloc(sizeof(mowgli_string_t));
self->size = 64;
self->pos = 0;
self->str = mowgli_alloc(self->size);
self->append = &mowgli_string_append;
self->append_char = &mowgli_string_append_char;
self->reset = &mowgli_string_reset;
self->destroy = &mowgli_string_destroy;
return self;
}
void mowgli_string_reset(mowgli_string_t *self)
{
return_if_fail(self != NULL);
self->str[0] = self->pos = 0;
}
void mowgli_string_destroy(mowgli_string_t *self)
{
return_if_fail(self != NULL);
mowgli_free(self->str);
mowgli_free(self);
}
void mowgli_string_append(mowgli_string_t *self, const char *src, size_t n)
{
if (self->size - self->pos <= n)
{
char *new;
self->size = MAX(self->size * 2, self->pos + n + 8);
new = realloc(self->str, self->size);
self->str = new;
}
memcpy(self->str + self->pos, src, n);
self->pos += n;
self->str[self->pos] = 0;
}
void mowgli_string_append_char(mowgli_string_t *self, const char c)
{
if (self->size - self->pos <= 1)
{
char *new;
self->size = MAX(self->size * 2, self->pos + 9);
new = realloc(self->str, self->size);
self->str = new;
}
self->str[self->pos++] = c;
self->str[self->pos] = 0;
}
/* These functions are taken from Linux. */
size_t mowgli_strlcat(char *dest, const char *src, size_t count)
{
size_t dsize = strlen(dest);
size_t len = strlen(src);
size_t res = dsize + len;
dest += dsize;
count -= dsize;
if (len >= count)
len = count - 1;
memcpy(dest, src, len);
dest[len] = 0;
return res;
}
size_t mowgli_strlcpy(char *dest, const char *src, size_t size)
{
size_t ret = strlen(src);
if (size)
{
size_t len = (ret >= size) ? size - 1 : ret;
memcpy(dest, src, len);
dest[len] = '\0';
}
return ret;
}
|
