void search_backward(void)
{
char *p, *string, tmp[BLOCK_SEARCH_SIZE], tmpstr[BLOCK_SEARCH_SIZE];
int quit, sizea, sizeb;
INT blockstart;
if (!searchA(&string, &sizea, tmp, sizeof(tmp))) return;
quit = -1;
blockstart = base + cursor - sizea + 1;
do {
blockstart -= BLOCK_SEARCH_SIZE - sizea + 1;
sizeb = BLOCK_SEARCH_SIZE;
if (blockstart < 0) { sizeb -= -blockstart; blockstart = 0; }
if (sizeb < sizea) quit = -3;
else {
if (LSEEK_(fd, blockstart) == -1) { quit = -3; break; }
if (sizeb != read(fd, tmp, sizeb)) quit = -3;
else if (getch() != ERR) quit = -2;
else if ((p = mymemrmem(tmp, sizeb, string, sizea))) quit = p - tmp;
}
sprintf(tmpstr,"searching... 0x%08llX", (long long) blockstart);
nodelay(stdscr, TRUE);
displayTwoLineMessage(tmpstr, "(press any key to cancel)");
} while (quit == -1);
searchB(quit + (quit >= 0 ? blockstart : 0), string);
}
void copy_region(void)
{
typePage *p;
if (!mark_set) { displayMessageAndWaitForKey("Nothing to copy"); return; }
sizeCopyBuffer = mark_max - mark_min + 1;
if (sizeCopyBuffer == 0) return;
if (sizeCopyBuffer > BIGGEST_COPYING) {
displayTwoLineMessage("Hey, don't you think that's too big?!", "Really copy (Yes/No)");
if (tolower(getch()) != 'y') return;
}
FREE(copyBuffer);
if ((copyBuffer = malloc(sizeCopyBuffer)) == NULL) {
displayMessageAndWaitForKey("Can't allocate that much memory");
return;
}
if (LSEEK_(fd, mark_min) == -1 || read(fd, copyBuffer, sizeCopyBuffer) == -1) {
displayMessageAndWaitForKey(strerror(errno));
return;
}
for (p = edited; p; p = p->next) {
if (mark_min < p->base + p->size && p->base <= mark_max) {
off_t min = MIN(p->base, mark_min);
memcpy(copyBuffer + p->base - min,
p->vals + mark_min - min,
MIN(p->base + p->size, mark_max) - MAX(p->base, mark_min) + 1);
}
}
unmarkAll();
mark_set = FALSE;
}
int tryloc(off_t loc)
{
char c;
if (loc < 0)
return FALSE;
if (loc <= lastEditedLoc)
return TRUE;
if (loc <= biggestLoc)
return TRUE;
if (LSEEK_(fd, loc - 1) != -1 && /* don't have to worry about loc - 1 < 0 */
read(fd, &c, 1) == 1) {
biggestLoc = loc;
return TRUE;
}
return FALSE;
}
