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
|
#include "sbuf.h"
/* ------------------------------------ move to separate file */
#include <stdlib.h>
#include <stdio.h>
void
fatal (const char *msg)
{
fprintf (stderr, "%s", msg);
abort ();
}
void *
xmalloc (size_t size)
{
register void *value = malloc (size);
if (value == 0)
fatal ("virtual memory exhausted");
return value;
}
void *
xrealloc (void *ptr, size_t size)
{
register void *value = realloc (ptr, size);
if (value == 0)
fatal ("Virtual memory exhausted");
fprintf (stderr, "realloc: %d\n", size);
return value;
}
/*------------------------------------------------------------*/
struct sbuf *
sbuf_new (size_t initsz)
{
struct sbuf *b = (struct sbuf*) xmalloc (sizeof (struct sbuf));
if (initsz < 1)
initsz = 1;
b->data = (char*) xmalloc (initsz);
b->maxsz = initsz;
b->data[0] = '\0';
b->len = 0;
return b;
}
void
sbuf_free (struct sbuf *b)
{
if (b != NULL)
{
if (b->data != NULL)
free (b->data);
free (b);
}
}
char *
sbuf_concat (struct sbuf *b, const char *str)
{
size_t minsz = b->len + strlen (str) + 1;
if (b->maxsz < minsz)
{
b->data = (char*) 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_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;
}
|
