-
Notifications
You must be signed in to change notification settings - Fork 12
/
sbuf.c
171 lines (141 loc) · 2.92 KB
/
sbuf.c
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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
/*
* Functions for handling string buffers.
* Copyright (C) 2000, 2001, 2002, 2003, 2004 Shawn Betts <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <string.h>
#include "sdorfehs.h"
#include "sbuf.h"
struct sbuf *
sbuf_new(size_t initsz)
{
struct sbuf *b = xmalloc(sizeof(struct sbuf));
if (initsz < 1)
initsz = 1;
b->data = xmalloc(initsz);
b->maxsz = initsz;
b->data[0] = '\0';
b->len = 0;
return b;
}
void
sbuf_free(struct sbuf *b)
{
if (b != NULL) {
free(b->data);
free(b);
}
}
/* Free the structure but return the string. */
char *
sbuf_free_struct(struct sbuf *b)
{
if (b != NULL) {
char *tmp;
tmp = b->data;
free(b);
return tmp;
}
return NULL;
}
char *
sbuf_nconcat(struct sbuf *b, const char *str, int len)
{
size_t minsz = b->len + len + 1;
if (b->maxsz < minsz) {
b->data = xrealloc(b->data, minsz);
b->maxsz = minsz;
}
memcpy(b->data + b->len, str, minsz - b->len - 1);
b->len = minsz - 1;
*(b->data + b->len) = 0;
return b->data;
}
char *
sbuf_concat(struct sbuf *b, const char *str)
{
return sbuf_nconcat(b, str, strlen(str));
}
char *
sbuf_copy(struct sbuf *b, const char *str)
{
b->len = 0;
return sbuf_concat(b, str);
}
char *
sbuf_clear(struct sbuf *b)
{
b->len = 0;
b->data[0] = '\0';
return b->data;
}
char *
sbuf_get(struct sbuf *b)
{
return b->data;
}
char *
sbuf_printf(struct sbuf *b, char *fmt,...)
{
va_list ap;
free(b->data);
va_start(ap, fmt);
b->data = xvsprintf(fmt, ap);
va_end(ap);
b->len = strlen(b->data);
b->maxsz = b->len + 1;
return b->data;
}
char *
sbuf_printf_concat(struct sbuf *b, char *fmt,...)
{
char *buffer;
va_list ap;
va_start(ap, fmt);
buffer = xvsprintf(fmt, ap);
va_end(ap);
sbuf_concat(b, buffer);
free(buffer);
return b->data;
}
/* if width >= 0 then limit the width of s to width chars. */
char *
sbuf_utf8_nconcat(struct sbuf *b, const char *s, int width)
{
if (width >= 0) {
int len, nchars;
len = nchars = 0;
while (s[len] != '\0' && nchars < width) {
if (isu8start(s[len]))
do
len++;
while (isu8cont(s[len]));
else
len++;
nchars++;
}
sbuf_printf_concat(b, "%.*s", len, s);
} else
sbuf_concat(b, s);
return b->data;
}
void
sbuf_chop(struct sbuf *b)
{
if (b->len) {
b->data[--(b->len)] = '\0';
}
}