You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
1.5 KiB
80 lines
1.5 KiB
/*
|
|
* UCW Library -- Fast Buffered I/O: Strings on stack
|
|
*
|
|
* (c) 2008 Michal Vaner <vorner@ucw.cz>
|
|
*
|
|
* Code taken from ff-string.c by:
|
|
*
|
|
* (c) 1997--2006 Martin Mares <mj@ucw.cz>
|
|
* (c) 2006 Pavel Charvat <pchar@ucw.cz>
|
|
*
|
|
* This software may be freely distributed and used according to the terms
|
|
* of the GNU Lesser General Public License.
|
|
*/
|
|
|
|
#include <ucw/lib.h>
|
|
#include <ucw/fastbuf.h>
|
|
|
|
void
|
|
bgets_stk_init(struct bgets_stk_struct *s)
|
|
{
|
|
s->src_len = bdirect_read_prepare(s->f, &s->src);
|
|
if (!s->src_len)
|
|
{
|
|
s->cur_buf = NULL;
|
|
s->cur_len = 0;
|
|
}
|
|
else
|
|
{
|
|
s->old_buf = NULL;
|
|
s->cur_len = 256;
|
|
}
|
|
}
|
|
|
|
void
|
|
bgets_stk_step(struct bgets_stk_struct *s)
|
|
{
|
|
byte *buf = s->cur_buf;
|
|
uint buf_len = s->cur_len;
|
|
if (s->old_buf)
|
|
{
|
|
memcpy( s->cur_buf, s->old_buf, s->old_len);
|
|
buf += s->old_len;
|
|
buf_len -= s->old_len;
|
|
}
|
|
do
|
|
{
|
|
uint cnt = MIN(s->src_len, buf_len);
|
|
for (uint i = cnt; i--;)
|
|
{
|
|
byte v = *s->src++;
|
|
if (v == '\n')
|
|
{
|
|
bdirect_read_commit(s->f, s->src);
|
|
goto exit;
|
|
}
|
|
*buf++ = v;
|
|
}
|
|
if (cnt == s->src_len)
|
|
{
|
|
bdirect_read_commit(s->f, s->src);
|
|
s->src_len = bdirect_read_prepare(s->f, &s->src);
|
|
}
|
|
else
|
|
s->src_len -= cnt;
|
|
if (cnt == buf_len)
|
|
{
|
|
s->old_len = s->cur_len;
|
|
s->old_buf = s->cur_buf;
|
|
s->cur_len *= 2;
|
|
return;
|
|
}
|
|
else
|
|
buf_len -= cnt;
|
|
}
|
|
while (s->src_len);
|
|
exit:
|
|
*buf = 0;
|
|
s->cur_len = 0;
|
|
}
|
|
|
|
|