1
2extern int foo (void);
3
4int
5avi_parse_comments (int fd, char *buf, int space_left)
6{
7  int len = 0, readlen = 0, k;
8  char *data, *c, *d;
9
10  if (fd <= 0 || !buf || space_left <= 0)
11    return -1;
12
13  memset (buf, 0, space_left);
14
15  readlen = foo ();
16  if (!(data = malloc (readlen * sizeof (char) + 1)))
17    return -1;
18
19  c = data;
20  space_left--;
21
22  while (len < space_left)
23    {
24      if (!c || *c == '\0')
25	break;
26      else if (*c == 'I')
27	{
28	  d = c + 4;
29
30	  k = 0;
31	  while (d[k] != '\r' && d[k] != '\n' && d[k] != '\0')
32	    ++k;
33	  if (k >= space_left)
34	    return len;
35
36
37	  memcpy (buf + len, c, 4);
38	  len += 4;
39
40
41	  long2str (buf + len, k + 1);
42	  len += 4;
43
44
45	  memcpy (buf + len, d, k);
46
47	  *(buf + len + k + 1) = '\0';
48
49
50	  if ((k + 1) & 1)
51	    {
52	      k++;
53	      *(buf + len + k + 1) = '\0';
54	    }
55	  len += k + 1;
56
57
58	  while (*c != '\n' && *c != '\0')
59	    ++c;
60	  if (*c != '\0')
61	    ++c;
62	  else
63	    break;
64
65	}
66    }
67  free (data);
68
69  return len;
70}
71
72
73