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
|
/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef TEXT_H
#define TEXT_H
#include <string.h>
typedef struct
{
goffset offset;
gsize frame_len;
gsize len;
gchar *body;
} Text;
inline Text*
text_new(const gchar *src)
{
if (!src)
return NULL;
gsize len = strlen(src);
Text *out = (Text*)g_malloc(sizeof(Text) + len + 1);
gchar *body = (gchar*)out + sizeof(Text);
out->offset = 0;
out->frame_len = len;
out->len = len;
out->body = body;
memcpy(body, src, len + 1);
GST_DEBUG("[%p] len=%ld", out, len);
return out;
}
inline void
text_chunk(Text *src, Text *dst, gsize len)
{
memcpy(dst, src, sizeof(Text));
gsize dst_len = MIN(len, src->frame_len);
gchar *dst_last = dst->body + dst->offset + dst_len;
gchar *i;
if (dst_len < src->frame_len)
for (i = dst_last; dst_len; --dst_len, --i)
if (g_ascii_isspace(*i))
break;
if (dst_len)
dst->frame_len = dst_len;
else
{
dst_last = g_utf8_prev_char(dst_last + 1);
dst->frame_len = dst_last - (dst->body + dst->offset);
}
src->offset += dst->frame_len;
src->frame_len -= dst->frame_len;
GST_DEBUG("[%p] dst_len=%ld dst_last=%ld "
"src->offset=%ld src->frame_len=%ld dst->body=%s", src, dst_len,
dst_last-dst->body, src->offset, src->frame_len,
dst->body + dst->offset);
}
inline gchar*
text_first(Text *self)
{
return self->body + self->offset;
}
inline gchar*
text_last(Text *self)
{
return text_first(self) + self->frame_len;
}
inline gboolean
text_eot(Text *self)
{
return self->frame_len == 0;
}
inline void
text_unref(Text *self)
{
if (text_eot(self))
return;
gpointer data = NULL;
if (self->offset + self->frame_len >= self->len)
data = self->body - sizeof(Text);
memset(self, 0, sizeof(Text));
GST_DEBUG("[%p]", data);
g_free(data);
}
inline gsize
text_len(Text *self)
{
return self->frame_len;
}
#endif
|
