Viewing file:  scanio.c (1.22 KB) -rw-r--r--
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uchar *ScanFill(uchar *cursor){
unsigned cnt = s->tok - s->bot;
s->pos += cursor - s->mrk;
if(cnt){
if(s->eot){
unsigned len = s->eot - s->tok;
memcpy(s->bot, s->tok, len);
s->eot = &s->bot[len];
if((len = s->lim - cursor) != 0)
memcpy(s->eot, cursor, len);
cursor = s->eot;
s->lim = &cursor[len];
} else {
memcpy(s->bot, s->tok, s->lim - s->tok);
cursor -= cnt;
s->lim -= cnt;
}
s->tok = s->bot;
s->ptr -= cnt;
}
if((s->top - s->lim) < 512){
uchar *buf = (uchar*) malloc(((s->lim - s->bot) + 512)*sizeof(uchar));
memcpy(buf, s->bot, s->lim - s->bot);
s->tok = buf;
s->ptr = &buf[s->ptr - s->bot];
if(s->eot)
s->eot = &buf[s->eot - s->bot];
cursor = &buf[cursor - s->bot];
s->lim = &buf[s->lim - s->bot];
s->top = &s->lim[512];
free(s->bot);
s->bot = buf;
}
s->mrk = cursor;
if(ScanCBIO.file){
if((cnt = read(ScanCBIO.u.f.fd, (char*) s->lim, 512)) != 512)
memset(&s->lim[cnt], 0, 512 - cnt);
s->lim += 512;
}
return cursor;
}
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