ESPTerm - ESP8266 terminal emulator. Branches: [master] patches, [work] next release
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espterm-firmware/user/ansi_parser_callbacks.c

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6.5 KiB

/**
* ANSI code parser callbacks that do the actual work.
* Split from the parser itself for easier editing without
* having to deal with Ragel.
*/
#include <esp8266.h>
#include "ansi_parser_callbacks.h"
#include "screen.h"
#include "ansi_parser.h"
#include "uart_driver.h"
/**
* Handle a received plain character
*/
void ICACHE_FLASH_ATTR
apars_handle_plainchar(char c)
{
screen_putchar(c);
}
/**
* Bad sequence received, show warning
*/
void apars_handle_badseq(void)
{
warn("Invalid escape sequence discarded.");
}
/**
* \brief Handle fully received CSI ANSI sequence
* \param leadchar - private range leading character, 0 if none
* \param params - array of CSI_N_MAX ints holding the numeric arguments
* \param keychar - the char terminating the sequence
*/
void ICACHE_FLASH_ATTR
apars_handle_CSI(char leadchar, int *params, char keychar)
{
/*
Implemented codes (from Wikipedia)
CSI n A CUU – Cursor Up
CSI n B CUD – Cursor Down
CSI n C CUF – Cursor Forward
CSI n D CUB – Cursor Back
CSI n E CNL – Cursor Next Line
CSI n F CPL – Cursor Previous Line
CSI n G CHA – Cursor Horizontal Absolute
CSI n ; m H CUP – Cursor Position
CSI n J ED – Erase Display
CSI n K EL – Erase in Line
CSI n S SU – Scroll Up
CSI n T SD – Scroll Down
CSI n ; m f HVP – Horizontal and Vertical Position
CSI n m SGR – Select Graphic Rendition (Implemented only some)
CSI 6n DSR – Device Status Report
CSI s SCP – Save Cursor Position
CSI u RCP – Restore Cursor Position
CSI ?25l DECTCEM Hides the cursor
CSI ?25h DECTCEM Shows the cursor
*/
int n1 = params[0];
int n2 = params[1];
// int n3 = params[2];
// defaults
switch (keychar) {
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'S':
case 'T':
if (n1 == 0) n1 = 1;
break;
case 'H':
case 'f':
if (n1 == 0) n1 = 1;
if (n2 == 0) n2 = 1;
break;
case 'J':
case 'K':
if (n1 > 2) n1 = 0;
break;
}
switch (keychar) {
// CUU CUD CUF CUB
case 'A': screen_cursor_move(-n1, 0); break;
case 'B': screen_cursor_move(n1, 0); break;
case 'C': screen_cursor_move(0, n1); break;
case 'D': screen_cursor_move(0, -n1); break;
case 'E': // CNL
screen_cursor_move(n1, 0);
screen_cursor_set_x(0);
break;
case 'F': // CPL
screen_cursor_move(-n1, 0);
screen_cursor_set_x(0);
break;
// CHA
case 'G':
screen_cursor_set_x(n1 - 1); break; // 1-based
// SU, SD
case 'S': screen_scroll_up(n1); break;
case 'T': screen_scroll_down(n1); break;
// CUP,HVP
case 'H':
case 'f':
screen_cursor_set(n1-1, n2-1); break; // 1-based
case 'J': // ED
if (n1 == 0) {
screen_clear(CLEAR_TO_CURSOR);
} else if (n1 == 1) {
screen_clear(CLEAR_FROM_CURSOR);
} else {
screen_clear(CLEAR_ALL);
screen_cursor_set(0, 0);
}
break;
case 'K': // EL
if (n1 == 0) {
screen_clear_line(CLEAR_TO_CURSOR);
} else if (n1 == 1) {
screen_clear_line(CLEAR_FROM_CURSOR);
} else {
screen_clear_line(CLEAR_ALL);
screen_cursor_set_x(0);
}
break;
// SCP, RCP
case 's': screen_cursor_save(0); break;
case 'u': screen_cursor_restore(0); break;
case 'n':
if (n1 == 6) {
// Query cursor position
char buf[20];
int x, y;
screen_cursor_get(&y, &x);
sprintf(buf, "\033[%d;%dR", y+1, x+1);
UART_WriteString(UART0, buf, UART_TIMEOUT_US);
}
else if (n1 == 5) {
// Query device status - reply "Device is OK"
UART_WriteString(UART0, "\0330n", UART_TIMEOUT_US);
}
break;
// DECTCEM cursor show hide
case 'l':
if (leadchar == '?' && n1 == 25) {
screen_cursor_enable(1);
}
break;
case 'h':
if (leadchar == '?' && n1 == 25) {
screen_cursor_enable(0);
}
break;
case 'm': // SGR
// iterate arguments
for (int i = 0; i < CSI_N_MAX; i++) {
int n = params[i];
if (i == 0 && n == 0) { // reset SGR
screen_set_fg(7);
screen_set_bg(0);
break; // cannot combine reset with others
}
else if (n >= 30 && n <= 37) screen_set_fg(n-30); // ANSI normal fg
else if (n >= 40 && n <= 47) screen_set_bg(n-40); // ANSI normal bg
else if (n == 39) screen_set_fg(7); // default fg
else if (n == 49) screen_set_bg(0); // default bg
else if (n == 7) screen_inverse(1); // inverse
else if (n == 27) screen_inverse(0); // positive
else if (n == 1) screen_set_bright_fg(); // ANSI bold = bright fg
else if (n >= 90 && n <= 97) screen_set_fg(n-90+8); // AIX bright fg
else if (n >= 100 && n <= 107) screen_set_bg(n-100+8); // AIX bright bg
}
break;
}
}
void ICACHE_FLASH_ATTR apars_handle_saveCursorAttrs(void)
{
screen_cursor_save(1);
}
void ICACHE_FLASH_ATTR apars_handle_restoreCursorAttrs(void)
{
screen_cursor_restore(1);
}
/**
* \brief Handle a request to reset the display device
*/
void ICACHE_FLASH_ATTR
apars_handle_RESET_cmd(void)
{
// XXX maybe user wanted to reset the module instead?
screen_reset();
}
/**
* Handle a factory reset request
*/
void ICACHE_FLASH_ATTR
apars_handle_OSC_FactoryReset(void)
{
info("OSC: Factory reset");
// Send acknowledgement message to UART0
// User is performing this manually, so we can just print it as string
UART_WriteString(UART0, "\r\nFACTORY RESET\r\n", UART_TIMEOUT_US);
// Disconnect from AP if connected
int opmode = wifi_get_opmode();
if (opmode != SOFTAP_MODE) {
wifi_station_disconnect();
}
// Both must be enabled so we can manipulate their settings
wifi_set_opmode(STATIONAP_MODE);
// --- AP config ---
struct softap_config apconf;
wifi_softap_get_config(&apconf);
apconf.authmode=AUTH_OPEN; // Disable access protection
apconf.channel=1; // Reset channel; user may have set bad channel in the UI
// generate unique AP name
u8 mac[6];
wifi_get_macaddr(SOFTAP_IF, mac);
sprintf((char*)apconf.ssid, "TERM-%02X%02X%02X", mac[3], mac[4], mac[5]);
apconf.ssid_len = (u8)strlen((char*)apconf.ssid);
// --- Station ---
struct station_config staconf;
wifi_station_get_config(&staconf);
// clear info about SSID
staconf.ssid[0]=0;
staconf.bssid_set=0;
staconf.password[0]=0;
wifi_softap_set_config(&apconf);
wifi_station_set_config(&staconf);
UART_WriteString(UART0, "Factory Reset complete, device reset.\r\n\r\n", UART_TIMEOUT_US);
// Reboot to clean STA+AP mode with Channel 1 & reset AP SSID.
system_restart();
}
/**
* Handle a screen resize request
*/
void ICACHE_FLASH_ATTR
apars_handle_OSC_SetScreenSize(int rows, int cols)
{
info("OSC: Set screen size to %d x %d", rows, cols);
screen_resize(rows, cols);
}