/*
* rb_linebuf_copy_raw
*
* Copy as much data as possible directly into a linebuf,
* splitting at \r\n, but without altering any data.
*
*/
static ssize_t
rb_linebuf_copy_raw(rb_buf_head_t * bufhead, rb_buf_line_t * bufline, char *data, size_t len)
{
size_t cpylen = 0; /* how many bytes we've copied */
char *ch = data; /* Pointer to where we are in the read data */
char *bufch = bufline->buf + bufline->len;
ssize_t clen = 0; /* how many bytes we've processed,
and don't ever want to see again.. */
/* If its full or terminated, ignore it */
bufline->raw = true;
lrb_assert(bufline->len < BUF_DATA_SIZE);
if(bufline->terminated == true)
return 0;
clen = rb_linebuf_skip_crlf(ch, len);
cpylen = (size_t) clen;
if(clen == -1)
return -1;
/* This is the overflow case..This doesn't happen often.. */
if(cpylen > (BUF_DATA_SIZE - bufline->len - 1))
{
clen = BUF_DATA_SIZE - (ssize_t)bufline->len - 1;
memcpy(bufch, ch, (size_t)clen);
bufline->buf[BUF_DATA_SIZE - 1] = '\0';
bufch = bufline->buf + BUF_DATA_SIZE - 2;
bufline->terminated = true;
bufline->len = BUF_DATA_SIZE - 1;
bufhead->len += BUF_DATA_SIZE - 1;
return clen;
}
memcpy(bufch, ch, cpylen);
bufch += cpylen;
*bufch = '\0';
bufch--;
if(*bufch != '\r' && *bufch != '\n')
{
/* No linefeed, bail for the next time */
bufhead->len += cpylen;
bufline->len += cpylen;
bufline->terminated = false;
return clen;
}
bufline->terminated = true;
bufhead->len += cpylen;
bufline->len += cpylen;
return clen;
}
/*
* rb_linebuf_copy_raw
*
* Copy as much data as possible directly into a linebuf,
* splitting at \r\n, but without altering any data.
*
*/
static int
rb_linebuf_copy_raw(buf_head_t * bufhead, buf_line_t * bufline, char *data, int len)
{
int cpylen = 0; /* how many bytes we've copied */
char *ch = data; /* Pointer to where we are in the read data */
char *bufch = bufline->buf + bufline->len;
int clen = 0; /* how many bytes we've processed,
and don't ever want to see again.. */
/* If its full or terminated, ignore it */
bufline->raw = 1;
lrb_assert(bufline->len <= LINEBUF_SIZE);
if(bufline->terminated == 1)
return 0;
clen = cpylen = rb_linebuf_skip_crlf(ch, len);
if(clen == -1)
return -1;
/* This is the overflow case..This doesn't happen often.. */
if(cpylen > (LINEBUF_SIZE - bufline->len))
{
clen = LINEBUF_SIZE - bufline->len;
memcpy(bufch, ch, clen);
bufline->buf[LINEBUF_SIZE] = '\0';
bufline->terminated = 1;
bufline->len = LINEBUF_SIZE;
bufhead->len += LINEBUF_SIZE;
return clen;
}
memcpy(bufch, ch, cpylen);
bufch += cpylen;
*bufch = '\0';
bufch--;
if(*bufch != '\r' && *bufch != '\n')
{
/* No linefeed, bail for the next time */
bufhead->len += cpylen;
bufline->len += cpylen;
bufline->terminated = 0;
return clen;
}
bufline->terminated = 1;
bufhead->len += cpylen;
bufline->len += cpylen;
return clen;
}
/*
* rb_linebuf_copy_line
*
* Okay..this functions comments made absolutely no sense.
*
* Basically what we do is this. Find the first chunk of text
* and then scan for a CRLF. If we didn't find it, but we didn't
* overflow our buffer..we wait for some more data.
* If we found a CRLF, we replace them with a \0 character.
* If we overflowed, we copy the most our buffer can handle, terminate
* it with a \0 and return.
*
* The return value is the amount of data we consumed. This could
* be different than the size of the linebuffer, as when we discard
* the overflow, we don't want to process it again.
*
* This still sucks in my opinion, but it seems to work.
*
* -Aaron
*/
static int
rb_linebuf_copy_line(buf_head_t * bufhead, buf_line_t * bufline, char *data, int len)
{
int cpylen = 0; /* how many bytes we've copied */
char *ch = data; /* Pointer to where we are in the read data */
char *bufch = bufline->buf + bufline->len;
int clen = 0; /* how many bytes we've processed,
and don't ever want to see again.. */
/* If its full or terminated, ignore it */
bufline->raw = 0;
lrb_assert(bufline->len < BUF_DATA_SIZE);
if(bufline->terminated == 1)
return 0;
clen = cpylen = rb_linebuf_skip_crlf(ch, len);
if(clen == -1)
return -1;
/* This is the ~overflow case..This doesn't happen often.. */
if(cpylen > (BUF_DATA_SIZE - bufline->len - 1)) {
memcpy(bufch, ch, (BUF_DATA_SIZE - bufline->len - 1));
bufline->buf[BUF_DATA_SIZE - 1] = '\0';
bufch = bufline->buf + BUF_DATA_SIZE - 2;
while(cpylen && (*bufch == '\r' || *bufch == '\n')) {
*bufch = '\0';
cpylen--;
bufch--;
}
bufline->terminated = 1;
bufline->len = BUF_DATA_SIZE - 1;
bufhead->len += BUF_DATA_SIZE - 1;
return clen;
}
memcpy(bufch, ch, cpylen);
bufch += cpylen;
*bufch = '\0';
bufch--;
if(*bufch != '\r' && *bufch != '\n') {
/* No linefeed, bail for the next time */
bufhead->len += cpylen;
bufline->len += cpylen;
bufline->terminated = 0;
return clen;
}
/* Yank the CRLF off this, replace with a \0 */
while(cpylen && (*bufch == '\r' || *bufch == '\n')) {
*bufch = '\0';
cpylen--;
bufch--;
}
bufline->terminated = 1;
bufhead->len += cpylen;
bufline->len += cpylen;
return clen;
}
