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

300 lines
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"
#include "persist.h"
static char utf_collect[4];
static int utf_i = 0;
static int utf_j = 0;
/**
* Handle a received plain character
*/
void ICACHE_FLASH_ATTR
apars_handle_plainchar(char c)
{
// collecting unicode glyphs...
if (c & 0x80) {
if (utf_i == 0) {
if ((c & 0xE0) == 0xC0) {
utf_i = 2;
}
else if ((c & 0xF0) == 0xE0) {
utf_i = 3;
}
else if ((c & 0xF8) == 0xF0) {
utf_i = 4;
}
utf_collect[0] = c;
utf_j = 1;
}
else {
utf_collect[utf_j++] = c;
if (utf_j >= utf_i) {
screen_putchar(utf_collect);
utf_i = 0;
utf_j = 0;
memset(utf_collect, 0, 4);
}
}
}
else {
utf_collect[0] = c;
utf_collect[1] = 0; // just to make sure it's closed...
screen_putchar(utf_collect);
}
}
/**
* 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);
}
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, "\033[0n", UART_TIMEOUT_US);
}
break;
// DECTCEM feature enable / disable
case 'h':
if (leadchar == '?') {
if (n1 == 25) {
screen_cursor_enable(1);
} else if (n1 == 7) {
screen_wrap_enable(1);
}
}
break;
case 'l':
if (leadchar == '?') {
if (n1 == 25) {
screen_cursor_enable(0);
} else if (n1 == 7) {
screen_wrap_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
7 years ago
screen_reset_cursor(); // resets colors, inverse and bold.
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
7 years ago
else if (n == 49) screen_set_bg(false); // default bg
else if (n == 7) screen_inverse(true); // inverse
else if (n == 27) screen_inverse(false); // positive
7 years ago
else if (n == 1) screen_set_bold(true); // bold
else if (n == 21 || n == 22) screen_set_bold(false); // bold off
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_hashCode(char c)
{
//
}
void ICACHE_FLASH_ATTR apars_handle_shortCode(char c)
{
switch(c) {
case 'c': // screen reset
screen_reset();
break;
case '7': // save cursor + attrs
screen_cursor_save(1);
break;
case '8': // restore cursor + attrs
screen_cursor_restore(1);
break;
case 'E': // same as CR LF
// TODO
break;
case 'D': // move cursor down, scroll screen up if needed
// TODO
break;
case 'M': // move cursor up, scroll screen down if needed
// TODO
break;
}
}
/**
* 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);
}
void ICACHE_FLASH_ATTR
apars_handle_OSC_SetButton(int num, const char *buffer)
{
strncpy(termconf_scratch.btn[num-1], buffer, TERM_BTN_LEN);
info("OSC: Set BTN%d = %s", num, buffer);
screen_notifyChange(CHANGE_LABELS);
}
void ICACHE_FLASH_ATTR
apars_handle_OSC_SetTitle(const char *buffer)
{
strncpy(termconf_scratch.title, buffer, TERM_TITLE_LEN);
info("OSC: Set TITLE = %s", buffer);
screen_notifyChange(CHANGE_LABELS);
}