static char* less_gets(int sz)
{
int c;
unsigned i = 0;
char *result = xzalloc(1);
while (1) {
c = '\0';
less_gets_pos = sz + i;
c = getch_nowait();
if (c == 0x0d) {
result[i] = '\0';
less_gets_pos = -1;
return result;
}
if (c == 0x7f)
c = 8;
if (c == 8 && i) {
printf("\x8 \x8");
i--;
}
if (c < ' ') /* filters out KEYCODE_xxx too (<0) */
continue;
if (i >= width - sz - 1)
continue; /* len limit */
bb_putchar(c);
result[i++] = c;
result = xrealloc(result, i+1);
}
}
static char* less_gets(int sz)
{
char c;
int i = 0;
char *result = xzalloc(1);
while (1) {
c = '\0';
less_gets_pos = sz + i;
getch_nowait(&c, 1);
if (c == 0x0d) {
result[i] = '\0';
less_gets_pos = -1;
return result;
}
if (c == 0x7f)
c = 8;
if (c == 8 && i) {
printf("\x8 \x8");
i--;
}
if (c < ' ')
continue;
if (i >= width - sz - 1)
continue; /* len limit */
bb_putchar(c);
result[i++] = c;
result = xrealloc(result, i+1);
}
}
/* Grab a character from input without requiring the return key.
* May return KEYCODE_xxx values.
* Note that this function works best with raw input. */
static int less_getch(int pos)
{
int i;
again:
less_gets_pos = pos;
i = getch_nowait();
less_gets_pos = -1;
/* Discard Ctrl-something chars */
if (i >= 0 && i < ' ' && i != 0x0d && i != 8)
goto again;
return i;
}
/* Grab a character from input without requiring the return key. If the
* character is ASCII \033, get more characters and assign certain sequences
* special return codes. Note that this function works best with raw input. */
static int less_getch(int pos)
{
unsigned char input[16];
unsigned i;
again:
less_gets_pos = pos;
memset(input, 0, sizeof(input));
getch_nowait(input, sizeof(input));
less_gets_pos = -1;
/* Detect escape sequences (i.e. arrow keys) and handle
* them accordingly */
if (input[0] == '\033' && input[1] == '[') {
i = input[2] - REAL_KEY_UP;
if (i < 4)
return 20 + i;
i = input[2] - REAL_PAGE_UP;
if (i < 4)
return 24 + i;
if (input[2] == REAL_KEY_HOME_XTERM)
return KEY_HOME;
if (input[2] == REAL_KEY_HOME_ALT)
return KEY_HOME;
if (input[2] == REAL_KEY_END_XTERM)
return KEY_END;
if (input[2] == REAL_KEY_END_ALT)
return KEY_END;
return 0;
}
/* Reject almost all control chars */
i = input[0];
if (i < ' ' && i != 0x0d && i != 8)
goto again;
return i;
}
