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/* Public Domain Curses */
#include "lppdc.h"
#include <usb/usb.h>
unsigned long pdc_key_modifiers = 0L;
#if IS_ENABLED(CONFIG_LP_SERIAL_CONSOLE)
/* We treat serial like a vt100 terminal. For now we
do the cooking in here, but we should probably eventually
pass it to dedicated vt100 code */
static int getkeyseq(char *buffer, int len, int max)
{
int i;
while (1) {
for(i = 0; i < 75; i++) {
if (serial_havechar())
break;
mdelay(1);
}
if (i == 75)
return len;
buffer[len++] = serial_getchar();
if (len == max)
return len;
}
}
static struct {
const char *seq;
int key;
} escape_codes[] = {
{ "[A", KEY_UP },
{ "[B", KEY_DOWN },
{ "[C", KEY_RIGHT },
{ "[D", KEY_LEFT },
{ "[F", KEY_END },
{ "[H", KEY_HOME },
{ "[2~", KEY_IC },
{ "[3~", KEY_DC },
{ "[5~", KEY_PPAGE },
{ "[6~", KEY_NPAGE },
{ "OP", KEY_F(1) },
{ "OQ", KEY_F(2) },
{ "OR", KEY_F(3) },
{ "OS", KEY_F(4) },
{ "[15~", KEY_F(5) },
{ "[17~", KEY_F(6) },
{ "[18~", KEY_F(7) },
{ "[19~", KEY_F(8) },
{ "[20~", KEY_F(9) },
{ "[21~", KEY_F(10) },
{ "[23~", KEY_F(11) },
{ "[24~", KEY_F(12) },
{ NULL },
};
static int handle_escape(void)
{
char buffer[5];
int len = getkeyseq(buffer, 0, sizeof(buffer));
int i, t;
if (len == 0)
return 27;
for(i = 0; escape_codes[i].seq != NULL; i++) {
const char *p = escape_codes[i].seq;
for(t = 0; t < len; t++) {
if (!*p || *p != buffer[t])
break;
p++;
}
if (t == len)
return escape_codes[i].key;
}
return 0;
}
static int cook_serial(unsigned char ch)
{
switch(ch) {
case 8:
return KEY_BACKSPACE;
case 27:
return handle_escape();
default:
return ch;
}
}
#endif
void PDC_set_keyboard_binary(bool on)
{
PDC_LOG(("PDC_set_keyboard_binary() - called\n"));
}
/* check if a key event is waiting */
bool PDC_check_key(void)
{
#if IS_ENABLED(CONFIG_LP_USB_HID)
usb_poll();
if ((curses_flags & F_ENABLE_CONSOLE) &&
usbhid_havechar()) {
return TRUE;
}
#endif
#if IS_ENABLED(CONFIG_LP_PC_KEYBOARD)
if ((curses_flags & F_ENABLE_CONSOLE) &&
keyboard_havechar()) {
return TRUE;
}
#endif
#if IS_ENABLED(CONFIG_LP_SERIAL_CONSOLE)
if ((curses_flags & F_ENABLE_SERIAL) &&
serial_havechar()) {
return TRUE;
}
#endif
return FALSE;
}
/* return the next available key event */
int PDC_get_key(void)
{
int c = 0;
#if IS_ENABLED(CONFIG_LP_USB_HID)
usb_poll();
if ((curses_flags & F_ENABLE_CONSOLE) &&
usbhid_havechar()) {
c = usbhid_getchar();
}
#endif
#if IS_ENABLED(CONFIG_LP_PC_KEYBOARD)
if ((curses_flags & F_ENABLE_CONSOLE) &&
keyboard_havechar() && (c == 0)) {
c = keyboard_getchar();
}
#endif
#if IS_ENABLED(CONFIG_LP_SERIAL_CONSOLE)
if ((curses_flags & F_ENABLE_SERIAL) &&
serial_havechar() && (c == 0)) {
c = cook_serial(serial_getchar());
}
#endif
SP->key_code = FALSE;
if (c == 0) {
c = ERR;
}
if (c >= KEY_MIN) {
SP->key_code = TRUE;
}
return c;
}
/* discard any pending keyboard input -- this is the core
routine for flushinp() */
void PDC_flushinp(void)
{
PDC_LOG(("PDC_flushinp() - called\n"));
while (PDC_check_key()) PDC_get_key();
}
int PDC_mouse_set(void)
{
return ERR;
}
int PDC_modifiers_set(void)
{
return OK;
}
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