1 uchar *ScanFill(uchar *cursor){ 2 unsigned cnt = s->tok - s->bot; 3 s->pos += cursor - s->mrk; 4 if(cnt){ 5 if(s->eot){ 6 unsigned len = s->eot - s->tok; 7 memcpy(s->bot, s->tok, len); 8 s->eot = &s->bot[len]; 9 if((len = s->lim - cursor) != 0) 10 memcpy(s->eot, cursor, len); 11 cursor = s->eot; 12 s->lim = &cursor[len]; 13 } else { 14 memcpy(s->bot, s->tok, s->lim - s->tok); 15 cursor -= cnt; 16 s->lim -= cnt; 17 } 18 s->tok = s->bot; 19 s->ptr -= cnt; 20 } 21 if((s->top - s->lim) < 512){ 22 uchar *buf = (uchar*) malloc(((s->lim - s->bot) + 512)*sizeof(uchar)); 23 memcpy(buf, s->bot, s->lim - s->bot); 24 s->tok = buf; 25 s->ptr = &buf[s->ptr - s->bot]; 26 if(s->eot) 27 s->eot = &buf[s->eot - s->bot]; 28 cursor = &buf[cursor - s->bot]; 29 s->lim = &buf[s->lim - s->bot]; 30 s->top = &s->lim[512]; 31 free(s->bot); 32 s->bot = buf; 33 } 34 s->mrk = cursor; 35 if(ScanCBIO.file){ 36 if((cnt = read(ScanCBIO.u.f.fd, (char*) s->lim, 512)) != 512) 37 memset(&s->lim[cnt], 0, 512 - cnt); 38 s->lim += 512; 39 } 40 return cursor; 41 } 42
