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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "main.h"
#include "buffer.h"
buffer_t * newBuffer(int n)
{
buffer_t *new;
new = malloc(sizeof(buffer_t));
memset(new, 0, sizeof(buffer_t));
new->alloc = n;
new->data = malloc(n);
memset(new->data , 0, n);
return new;
}
int addBuffer(buffer_t *p, char *data, int len)
{
assert( p != NULL );
assert( data != NULL );
assert( len >= 0 );
if( p->size + len <= p->alloc )
{
memcpy(p->data + p->size, data, len);
p->size += len;
return 0;
}
return 1;
}
int cutBuffer(buffer_t *p, int len)
{
assert( p != NULL );
assert( len >= 0 );
if( p->size - len >= 0 )
{
memmove(p->data, p->data + len, p->size - len);
p->size -= len;
return 0;
}
return 1;
}
int getBufferLine(buffer_t *p, char *line, int len)
{
char *end;
int ret_len;
assert( p != NULL );
assert( line != NULL );
assert( len >= 0 );
end = NULL;
end = memchr(p->data, '\n', p->size);
if( end == NULL ) return -1;
ret_len = (int) ( (end - p->data) + 1);
if( ret_len > len-1 ) ret_len = len-1;
memset(line, 0, len);
memcpy(line, p->data, ret_len);
cutBuffer(p, ret_len);
return ret_len;
}
int getData(buffer_t *p, char *line, int len)
{
assert( p != NULL );
assert( line != NULL );
assert( len >= 0 );
if( p->size < len)return -1;
memcpy(line, p->data, len);
cutBuffer(p, len);
return len;
}
void destroyBuffer(buffer_t *p)
{
assert( p != NULL );
if( p->data != NULL )free(p->data);
free(p);
}
/*
int main()
{
buffer_t *p;
char str[64];
char *s[] = {"hello world\n", "dalsi riadok\n", "koniec\n", NULL};
int i;
p = newBuffer(1024 * 10);
for( i = 0 ; s[i] != NULL ; i++)
addBuffer(p, s[i], strlen(s[i]));
while( getBufferLine(p, str, 64) > 0 )
{
printf("str = %s\n", str);
}
destroyBuffer(p);
return 0;
}
*/
|