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tty.c
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tty.c
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/*
* TTY Terminal handling for QEmacs
*
* Copyright (c) 2000-2001 Fabrice Bellard.
* Copyright (c) 2002-2017 Charlie Gordon.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#ifdef X11_IN_TTY
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#endif
#include "qe.h"
#if MAX_UNICODE_DISPLAY > 0xFFFF
typedef uint64_t TTYChar;
/* TTY composite style has 13-bit BG color, 4 attribute bits and 13-bit FG color */
#define TTY_STYLE_BITS 32
#define TTY_FG_COLORS 7936
#define TTY_BG_COLORS 7936
#define TTY_RGB_FG(r,g,b) (0x1000 | (((r) & 0xF0) << 4) | ((g) & 0xF0) | ((b) >> 4))
#define TTY_RGB_BG(r,g,b) (0x1000 | (((r) & 0xF0) << 4) | ((g) & 0xF0) | ((b) >> 4))
#define TTY_CHAR(ch,fg,bg) ((uint32_t)(ch) | ((uint64_t)((fg) | ((bg) << 17)) << 32))
#define TTY_CHAR2(ch,col) ((uint32_t)(ch) | ((uint64_t)(col) << 32))
#define TTY_CHAR_GET_CH(cc) ((uint32_t)(cc))
#define TTY_CHAR_GET_COL(cc) ((uint32_t)((cc) >> 32))
#define TTY_CHAR_GET_ATTR(cc) ((uint32_t)((cc) >> 32) & 0x1E000)
#define TTY_CHAR_GET_FG(cc) ((uint32_t)((cc) >> 32) & 0x1FFF)
#define TTY_CHAR_GET_BG(cc) ((uint32_t)((cc) >> (32 + 17)) & 0x1FFF)
#define TTY_CHAR_DEFAULT TTY_CHAR(' ', 7, 0)
#define TTY_CHAR_COMB 0x200000
#define TTY_CHAR_BAD 0xFFFD
#define TTY_CHAR_NONE 0xFFFFFFFF
#define TTY_BOLD 0x02000
#define TTY_UNDERLINE 0x04000
#define TTY_ITALIC 0x08000
#define TTY_BLINK 0x10000
#define COMB_CACHE_SIZE 2048
#else
typedef uint32_t TTYChar;
/* TTY composite style has 4-bit BG color, 4 attribute bits and 8-bit FG color */
#define TTY_STYLE_BITS 16
#define TTY_FG_COLORS 256
#define TTY_BG_COLORS 16
#define TTY_RGB_FG(r,g,b) (16 + ((r) / 51 * 36) + ((g) / 51 * 6) | ((b) / 51))
#define TTY_RGB_BG(r,g,b) qe_map_color(QERGB(r, g, b), xterm_colors, 16, NULL)
#define TTY_CHAR(ch,fg,bg) ((uint32_t)(ch) | ((uint32_t)((fg) | ((bg) << 12)) << 16))
#define TTY_CHAR2(ch,col) ((uint32_t)(ch) | ((uint32_t)(col) << 16))
#define TTY_CHAR_GET_CH(cc) ((cc) & 0xFFFF)
#define TTY_CHAR_GET_COL(cc) (((cc) >> 16) & 0xFFFF)
#define TTY_CHAR_GET_ATTR(cc) ((uint32_t)((cc) >> 16) & 0x0F000)
#define TTY_CHAR_GET_FG(cc) (((cc) >> 16) & 0xFF)
#define TTY_CHAR_GET_BG(cc) (((cc) >> (16 + 12)) & 0x0F)
#define TTY_CHAR_DEFAULT TTY_CHAR(' ', 7, 0)
#define TTY_CHAR_BAD 0xFFFD
#define TTY_CHAR_NONE 0xFFFF
#define TTY_BOLD 0x0100
#define TTY_UNDERLINE 0x0200
#define TTY_ITALIC 0x0400
#define TTY_BLINK 0x0800
#define COMB_CACHE_SIZE 1
#endif
#if defined(CONFIG_UNLOCKIO)
# define TTY_PUTC(c,f) putc_unlocked(c, f)
#ifdef CONFIG_DARWIN
# define TTY_FWRITE(b,s,n,f) fwrite(b, s, n, f)
#else
# define TTY_FWRITE(b,s,n,f) fwrite_unlocked(b, s, n, f)
#endif
# define TTY_FPRINTF fprintf
static inline void TTY_FPUTS(const char *s, FILE *fp) {
TTY_FWRITE(s, 1, strlen(s), fp);
}
#else
# define TTY_PUTC(c,f) putc(c, f)
# define TTY_FWRITE(b,s,n,f) fwrite(b, s, n, f)
# define TTY_FPRINTF fprintf
# define TTY_FPUTS fputs
#endif
enum InputState {
IS_NORM,
IS_ESC,
IS_CSI,
IS_CSI2,
IS_ESC2,
};
enum TermCode {
TERM_UNKNOWN = 0,
TERM_ANSI,
TERM_VT100,
TERM_XTERM,
TERM_LINUX,
TERM_CYGWIN,
TERM_TW100,
};
typedef struct TTYState {
TTYChar *screen;
int screen_size;
unsigned char *line_updated;
struct termios oldtty;
int cursor_x, cursor_y;
/* input handling */
enum InputState input_state;
int input_param, input_param2;
int utf8_index;
unsigned char buf[8];
char *term_name;
enum TermCode term_code;
int term_flags;
#define KBS_CONTROL_H 0x01
#define USE_ERASE_END_OF_LINE 0x02
#define USE_BOLD_AS_BRIGHT_FG 0x04
#define USE_BLINK_AS_BRIGHT_BG 0x08
#define USE_256_COLORS 0x10
#define USE_TRUE_COLORS 0x20
/* number of colors supported by the actual terminal */
const QEColor *term_colors;
int term_fg_colors_count;
int term_bg_colors_count;
/* number of colors supported by the virtual terminal */
const QEColor *tty_colors;
int tty_fg_colors_count;
int tty_bg_colors_count;
unsigned int comb_cache[COMB_CACHE_SIZE];
#ifdef X11_IN_TTY
Display* display;
Window window;
Atom xa_clipboard;
Atom xa_targets;
Atom xa_utf8_string;
Atom xa_utf8_string2;
Atom xa_utf8_string3;
#endif
} TTYState;
static QEditScreen *tty_screen; /* for tty_term_exit and tty_term_resize */
static void tty_dpy_invalidate(QEditScreen *s);
static void tty_term_resize(int sig);
static void tty_term_exit(void);
static void tty_read_handler(void *opaque);
#ifdef X11_IN_TTY
static void x11_in_tty_read_handler(void *opaque);
#endif
static int tty_dpy_probe(void)
{
return 1;
}
static int tty_dpy_init(QEditScreen *s,
qe__unused__ int w, qe__unused__ int h)
{
TTYState *ts;
struct termios tty;
struct sigaction sig;
const char *p;
ts = calloc(1, sizeof(*ts));
if (ts == NULL) {
return 1;
}
tty_screen = s;
s->STDIN = stdin;
s->STDOUT = stdout;
s->priv_data = ts;
s->media = CSS_MEDIA_TTY;
/* Derive some settings from the TERM environment variable */
ts->term_code = TERM_UNKNOWN;
ts->term_flags = USE_ERASE_END_OF_LINE;
ts->term_colors = xterm_colors;
ts->term_fg_colors_count = 16;
ts->term_bg_colors_count = 16;
ts->term_name = getenv("TERM");
if (ts->term_name) {
/* linux and xterm -> kbs=\177
* ansi cygwin vt100 -> kbs=^H
*/
if (strstart(ts->term_name, "ansi", NULL)) {
ts->term_code = TERM_ANSI;
ts->term_flags |= KBS_CONTROL_H;
} else
if (strstart(ts->term_name, "vt100", NULL)) {
ts->term_code = TERM_VT100;
ts->term_flags |= KBS_CONTROL_H;
} else
if (strstart(ts->term_name, "xterm", NULL)) {
ts->term_code = TERM_XTERM;
} else
if (strstart(ts->term_name, "linux", NULL)) {
ts->term_code = TERM_LINUX;
} else
if (strstart(ts->term_name, "cygwin", NULL)) {
ts->term_code = TERM_CYGWIN;
ts->term_flags |= KBS_CONTROL_H |
USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG;
} else
if (strstart(ts->term_name, "tw100", NULL)) {
ts->term_code = TERM_TW100;
ts->term_flags |= KBS_CONTROL_H |
USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG;
}
}
if (strstr(ts->term_name, "true") || strstr(ts->term_name, "24")) {
ts->term_flags |= USE_TRUE_COLORS | USE_256_COLORS;
}
if (strstr(ts->term_name, "256")) {
ts->term_flags |= USE_256_COLORS;
}
if ((p = getenv("TERM_PROGRAM")) && strequal(p, "iTerm.app")) {
/* iTerm and iTerm2 support true colors */
ts->term_flags |= USE_TRUE_COLORS | USE_256_COLORS;
}
/* actual color mode can be forced via environment variables */
/* XXX: should have qemacs variables too */
if ((p = getenv("COLORTERM")) != NULL) {
/* Check COLORTERM environment variable as documented in
* https://gist.github.com/XVilka/8346728
*/
#if TTY_STYLE_BITS == 32
if (strstr(p, "truecolor")
|| strstr(p, "24bit")
|| strstr(p, "hicolor")) {
ts->term_flags &= ~(USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG |
USE_256_COLORS | USE_TRUE_COLORS);
ts->term_flags |= USE_TRUE_COLORS;
} else
#endif
if (strstr(p, "256")) {
ts->term_flags &= ~(USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG |
USE_256_COLORS | USE_TRUE_COLORS);
ts->term_flags |= USE_256_COLORS;
} else
if (strstr(p, "16")) {
ts->term_flags &= ~(USE_BOLD_AS_BRIGHT_FG | USE_BLINK_AS_BRIGHT_BG |
USE_256_COLORS | USE_TRUE_COLORS);
}
}
#if TTY_STYLE_BITS == 32
if (ts->term_flags & USE_TRUE_COLORS) {
ts->term_fg_colors_count = 0x1000000;
ts->term_bg_colors_count = 0x1000000;
} else
if (ts->term_flags & USE_256_COLORS) {
ts->term_fg_colors_count = 256;
ts->term_bg_colors_count = 256;
}
#else
ts->term_flags &= ~USE_TRUE_COLORS;
if (ts->term_flags & USE_256_COLORS) {
ts->term_fg_colors_count = 256;
}
#endif
ts->tty_bg_colors_count = min(ts->term_bg_colors_count, TTY_BG_COLORS);
ts->tty_fg_colors_count = min(ts->term_fg_colors_count, TTY_FG_COLORS);
ts->tty_colors = xterm_colors;
tcgetattr(fileno(s->STDIN), &tty);
ts->oldtty = tty;
tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP |
INLCR | IGNCR | ICRNL | IXON);
tty.c_oflag |= OPOST;
tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
tty.c_cflag &= ~(CSIZE | PARENB);
tty.c_cflag |= CS8;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
tcsetattr(fileno(s->STDIN), TCSANOW, &tty);
/* First switch to full screen mode */
#if 0
printf("\033[?1048h\033[?1047h" /* enable cup */
"\033)0\033(B" /* select character sets in block 0 and 1 */
"\017"); /* shift out */
#else
TTY_FPRINTF(s->STDOUT,
"\033[?1049h" /* enter_ca_mode */
"\033[m\033(B" /* exit_attribute_mode */
"\033[4l" /* exit_insert_mode */
"\033[?7h" /* enter_am_mode */
"\033[39;49m" /* orig_pair */
"\033[?1h\033=" /* keypad_xmit */
);
#endif
/* Get charset from command line option */
s->charset = find_charset(qe_state.tty_charset);
if (ts->term_code == TERM_CYGWIN)
s->charset = &charset_8859_1;
if (ts->term_code == TERM_TW100)
s->charset = find_charset("atarist");
if (!s->charset && !isatty(fileno(s->STDOUT)))
s->charset = &charset_8859_1;
if (!s->charset) {
int y, x, n;
s->charset = &charset_8859_1;
/* Test UTF8 support by looking at the cursor position (idea
* from Ricardas Cepas <rch@pub.osf.lt>). Since uClibc actually
* tests to ensure that the format string is a valid multibyte
* sequence in the current locale (ANSI/ISO C99), use a format
* specifier of %s to avoid printf() failing with EILSEQ.
*/
/* ^X ^Z ^M \170101 */
//printf("%s", "\030\032" "\r\xEF\x81\x81" "\033[6n\033D");
/* Just print utf-8 encoding for eacute and check cursor position */
TTY_FPRINTF(s->STDOUT, "%s",
"\030\032" "\r\xC3\xA9" "\033[6n\033D");
fflush(s->STDOUT);
/* XXX: should have a timeout to avoid locking on unsupported terminals */
n = fscanf(s->STDIN, "\033[%d;%d", &y, &x); /* get cursor position */
TTY_FPRINTF(s->STDOUT, "\r \r"); /* go back, erase 3 chars */
if (n == 2 && x == 2) {
s->charset = &charset_utf8;
}
}
put_status(NULL, "tty charset: %s", s->charset->name);
atexit(tty_term_exit);
sig.sa_handler = tty_term_resize;
sigemptyset(&sig.sa_mask);
sig.sa_flags = 0;
sigaction(SIGWINCH, &sig, NULL);
fcntl(fileno(s->STDIN), F_SETFL, O_NONBLOCK);
/* If stdout is to a pty, make sure we aren't in nonblocking mode.
* Otherwise, the printf()s in term_flush() can fail with EAGAIN,
* causing repaint errors when running in an xterm or in a screen
* session. */
fcntl(fileno(s->STDOUT), F_SETFL, 0);
set_read_handler(fileno(s->STDIN), tty_read_handler, s);
tty_dpy_invalidate(s);
if (ts->term_flags & KBS_CONTROL_H) {
do_toggle_control_h(NULL, 1);
}
#ifdef X11_IN_TTY
ts->display = XOpenDisplay(NULL);
if(ts->display != NULL) {
//ts->window = DefaultRootWindow(ts->display);
ts->window = XCreateSimpleWindow(ts->display, DefaultRootWindow(ts->display),
0, 0, 1, 1, 4, 0, 0);
ts->xa_targets = XInternAtom(ts->display, "TARGETS", False);
ts->xa_utf8_string = XInternAtom(ts->display, "UTF8_STRING", False);
ts->xa_utf8_string2 = XInternAtom(ts->display, "text/plain;charset=UTF-8", False);
ts->xa_utf8_string3 = XInternAtom(ts->display, "text/plain;charset=utf-8", False);
int fd = ConnectionNumber(ts->display);
set_read_handler(fd, x11_in_tty_read_handler, s);
}
#endif
return 0;
}
static void tty_dpy_close(QEditScreen *s)
{
TTYState *ts = s->priv_data;
fcntl(fileno(s->STDIN), F_SETFL, 0);
#if 0
/* go to the last line */
printf("\033[%d;%dH\033[m\033[K"
"\033[?1047l\033[?1048l", /* disable cup */
s->height, 1);
#else
/* go to last line and clear it */
TTY_FPRINTF(s->STDOUT, "\033[%d;%dH" "\033[m\033[K", s->height, 1);
TTY_FPRINTF(s->STDOUT,
"\033[?1049l" /* exit_ca_mode */
"\033[?1l\033>" /* keypad_local */
"\033[?25h" /* show cursor */
"\r\033[m\033[K" /* return erase eol */
);
#endif
fflush(s->STDOUT);
qe_free(&ts->screen);
qe_free(&ts->line_updated);
}
static void tty_term_exit(void)
{
QEditScreen *s = tty_screen;
if (s) {
TTYState *ts = s->priv_data;
if (ts) {
tcsetattr(fileno(s->STDIN), TCSANOW, &ts->oldtty);
}
}
}
static void tty_term_resize(qe__unused__ int sig)
{
QEditScreen *s = tty_screen;
if (s) {
tty_dpy_invalidate(s);
//fprintf(stderr, "tty_term_resize: width=%d, height=%d\n", s->width, s->height);
url_redisplay();
}
}
static void tty_dpy_invalidate(QEditScreen *s)
{
TTYState *ts;
struct winsize ws;
int i, count, size;
const char *p;
TTYChar tc;
if (s == NULL)
return;
ts = s->priv_data;
/* get screen default values from environment */
s->width = (p = getenv("COLUMNS")) != NULL ? atoi(p) : 80;
s->height = (p = getenv("LINES")) != NULL ? atoi(p) : 25;
/* update screen dimensions from pseudo tty ioctl */
if (ioctl(fileno(s->STDIN), TIOCGWINSZ, &ws) == 0) {
if (ws.ws_col >= 10 && ws.ws_row >= 4) {
s->width = ws.ws_col;
s->height = ws.ws_row;
}
}
if (s->width > MAX_SCREEN_WIDTH)
s->width = MAX_SCREEN_WIDTH;
if (s->height >= 10000)
s->height -= 10000;
if (s->height > MAX_SCREEN_LINES)
s->height = MAX_SCREEN_LINES;
if (s->height < 3)
s->height = 25;
count = s->width * s->height;
size = count * sizeof(TTYChar);
/* screen buffer + shadow buffer + extra slot for loop guard */
qe_realloc(&ts->screen, size * 2 + sizeof(TTYChar));
qe_realloc(&ts->line_updated, s->height);
ts->screen_size = count;
/* Erase shadow buffer to impossible value */
memset(ts->screen + count, 0xFF, size + sizeof(TTYChar));
/* Fill screen buffer with black spaces */
tc = TTY_CHAR_DEFAULT;
for (i = 0; i < count; i++) {
ts->screen[i] = tc;
}
/* All rows need refresh */
memset(ts->line_updated, 1, s->height);
s->clip_x1 = 0;
s->clip_y1 = 0;
s->clip_x2 = s->width;
s->clip_y2 = s->height;
}
static void tty_dpy_cursor_at(QEditScreen *s, int x1, int y1,
qe__unused__ int w, qe__unused__ int h)
{
TTYState *ts = s->priv_data;
ts->cursor_x = x1;
ts->cursor_y = y1;
}
static int tty_dpy_is_user_input_pending(QEditScreen *s)
{
fd_set rfds;
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
FD_ZERO(&rfds);
FD_SET(fileno(s->STDIN), &rfds);
if (select(fileno(s->STDIN) + 1, &rfds, NULL, NULL, &tv) > 0)
return 1;
else
return 0;
}
static int const csi_lookup[] = {
KEY_NONE, /* 0 */
KEY_HOME, /* 1 */
KEY_INSERT, /* 2 */
KEY_DELETE, /* 3 */
KEY_END, /* 4 */
KEY_PAGEUP, /* 5 */
KEY_PAGEDOWN, /* 6 */
KEY_NONE, /* 7 */
KEY_NONE, /* 8 */
KEY_NONE, /* 9 */
KEY_NONE, /* 10 */
KEY_F1, /* 11 */
KEY_F2, /* 12 */
KEY_F3, /* 13 */
KEY_F4, /* 14 */
KEY_F5, /* 15 */
KEY_NONE, /* 16 */
KEY_F6, /* 17 */
KEY_F7, /* 18 */
KEY_F8, /* 19 */
KEY_F9, /* 20 */
KEY_F10, /* 21 */
KEY_NONE, /* 22 */
KEY_F11, /* 23 */
KEY_F12, /* 24 */
KEY_F13, /* 25 */
KEY_F14, /* 26 */
KEY_NONE, /* 27 */
KEY_F15, /* 28 */
KEY_F16, /* 29 */
KEY_NONE, /* 30 */
KEY_F17, /* 31 */
KEY_F18, /* 32 */
KEY_F19, /* 33 */
KEY_F20, /* 34 */
};
static void tty_read_handler(void *opaque)
{
QEditScreen *s = opaque;
QEmacsState *qs = &qe_state;
TTYState *ts = s->priv_data;
QEEvent ev1, *ev = &ev1;
u8 buf[1];
int ch, len;
if (read(fileno(s->STDIN), buf, 1) != 1)
return;
if (qs->trace_buffer &&
qs->active_window &&
qs->active_window->b != qs->trace_buffer) {
eb_trace_bytes(buf, 1, EB_TRACE_TTY);
}
ch = buf[0];
switch (ts->input_state) {
case IS_NORM:
/* charset handling */
if (s->charset == &charset_utf8) {
if (ts->utf8_index && !(ch > 0x80 && ch < 0xc0)) {
/* not a valid continuation byte */
/* flush stored prefix, restart from current byte */
/* XXX: maybe should consume prefix byte as binary */
ts->utf8_index = 0;
}
ts->buf[ts->utf8_index] = ch;
len = utf8_length[ts->buf[0]];
if (len > 1) {
const char *p = cs8(ts->buf);
if (++ts->utf8_index < len) {
/* valid utf8 sequence underway, wait for next */
return;
}
ch = utf8_decode(&p);
}
}
if (ch == '\033') {
if (!tty_dpy_is_user_input_pending(s)) {
/* Trick to distinguish the ESC key from function and meta
* keys transmitting escape sequences starting with \033
* but followed immediately by more characters.
*/
goto the_end;
}
ts->input_state = IS_ESC;
} else {
goto the_end;
}
break;
case IS_ESC:
if (ch == '\033') {
/* cygwin A-right transmit ESC ESC[C ... */
goto the_end;
}
if (ch == '[') {
if (!tty_dpy_is_user_input_pending(s)) {
ch = KEY_META('[');
ts->input_state = IS_NORM;
goto the_end;
}
ts->input_state = IS_CSI;
ts->input_param = 0;
ts->input_param2 = 0;
} else if (ch == 'O') {
ts->input_state = IS_ESC2;
ts->input_param = 0;
ts->input_param2 = 0;
} else {
ch = KEY_META(ch);
ts->input_state = IS_NORM;
goto the_end;
}
break;
case IS_CSI:
if (ch >= '0' && ch <= '9') {
ts->input_param = ts->input_param * 10 + ch - '0';
break;
}
ts->input_state = IS_NORM;
switch (ch) {
case ';': /* multi ignore but the last 2 */
/* iterm2 uses this for some keys:
* C-up, C-down, C-left, C-right, S-left, S-right,
*/
ts->input_param2 = ts->input_param;
ts->input_param = 0;
ts->input_state = IS_CSI;
break;
case '[':
ts->input_state = IS_CSI2;
break;
case '~':
if (ts->input_param < countof(csi_lookup)) {
ch = csi_lookup[ts->input_param];
goto the_end;
}
break;
/* All these for ansi|cygwin */
default:
if (ts->input_param == 5) {
/* xterm CTRL-arrows */
/* iterm2 CTRL-arrows:
* C-up = ^[[1;5A
* C-down = ^[[1;5B
* C-left = ^[[1;5D
* C-right = ^[[1;5C
*/
switch (ch) {
case 'A': ch = KEY_CTRL_UP; goto the_end;
case 'B': ch = KEY_CTRL_DOWN; goto the_end;
case 'C': ch = KEY_CTRL_RIGHT; goto the_end;
case 'D': ch = KEY_CTRL_LEFT; goto the_end;
}
} else
if (ts->input_param == 2) {
/* iterm2 SHIFT-arrows:
* S-left = ^[[1;2D
* S-right = ^[[1;2C
* should set-mark if region not visible
*/
switch (ch) {
case 'A': ch = KEY_UP; goto the_end;
case 'B': ch = KEY_DOWN; goto the_end;
case 'C': ch = KEY_RIGHT; goto the_end;
case 'D': ch = KEY_LEFT; goto the_end;
}
} else {
switch (ch) {
case 'A': ch = KEY_UP; goto the_end; // kcuu1
case 'B': ch = KEY_DOWN; goto the_end; // kcud1
case 'C': ch = KEY_RIGHT; goto the_end; // kcuf1
case 'D': ch = KEY_LEFT; goto the_end; // kcub1
case 'F': ch = KEY_END; goto the_end; // kend
//case 'G': ch = KEY_CENTER; goto the_end; // kb2
case 'H': ch = KEY_HOME; goto the_end; // khome
case 'L': ch = KEY_INSERT; goto the_end; // kich1
//case 'M': ch = KEY_MOUSE; goto the_end; // kmous
case 'Z': ch = KEY_SHIFT_TAB; goto the_end; // kcbt
}
}
break;
}
break;
case IS_CSI2:
/* cygwin/linux terminal */
ts->input_state = IS_NORM;
switch (ch) {
case 'A': ch = KEY_F1; goto the_end;
case 'B': ch = KEY_F2; goto the_end;
case 'C': ch = KEY_F3; goto the_end;
case 'D': ch = KEY_F4; goto the_end;
case 'E': ch = KEY_F5; goto the_end;
}
break;
case IS_ESC2: // "\EO"
/* xterm/vt100 fn */
ts->input_state = IS_NORM;
switch (ch) {
case 'A': ch = KEY_UP; goto the_end;
case 'B': ch = KEY_DOWN; goto the_end;
case 'C': ch = KEY_RIGHT; goto the_end;
case 'D': ch = KEY_LEFT; goto the_end;
case 'F': ch = KEY_CTRL_RIGHT; goto the_end; /* iterm2 F-right */
case 'H': ch = KEY_CTRL_LEFT; goto the_end; /* iterm2 F-left */
case 'P': ch = KEY_F1; goto the_end;
case 'Q': ch = KEY_F2; goto the_end;
case 'R': ch = KEY_F3; goto the_end;
case 'S': ch = KEY_F4; goto the_end;
case 't': ch = KEY_F5; goto the_end;
case 'u': ch = KEY_F6; goto the_end;
case 'v': ch = KEY_F7; goto the_end;
case 'l': ch = KEY_F8; goto the_end;
case 'w': ch = KEY_F9; goto the_end;
case 'x': ch = KEY_F10; goto the_end;
}
break;
the_end:
ev->key_event.type = QE_KEY_EVENT;
ev->key_event.key = ch;
qe_handle_event(ev);
break;
}
}
#ifdef X11_IN_TTY
static void x11_in_tty_read_handler(void* opaque) {
QEditScreen *s = opaque;
QEmacsState *qs = &qe_state;
TTYState *ts = s->priv_data;
QEEvent ev1, *ev = &ev1;
while (XPending(ts->display)) {
XEvent xev;
XNextEvent(ts->display, &xev);
if(xev.type == SelectionRequest) {
XEvent reply;
XSelectionRequestEvent *rq = &xev.xselectionrequest;
reply.xselection.type = SelectionNotify;
reply.xselection.property = None;
reply.xselection.display = rq->display;
reply.xselection.requestor = rq->requestor;
reply.xselection.selection = rq->selection;
reply.xselection.target = rq->target;
reply.xselection.time = rq->time;
if (rq->target == ts->xa_targets) {
Atom target_list[5];
target_list[0] = ts->xa_targets;
target_list[1] = ts->xa_utf8_string;
target_list[2] = ts->xa_utf8_string2;
target_list[3] = ts->xa_utf8_string3;
target_list[4] = XA_STRING;
XChangeProperty(ts->display, rq->requestor, rq->property,
ts->xa_targets, 8*sizeof(target_list[0]), PropModeReplace,
(unsigned char*)&target_list, countof(target_list));
} else if(rq->target == XA_STRING) {
/* XXX: charset is ignored! */
/* get qemacs yank buffer */
EditBuffer* b = qs->yank_buffers[qs->yank_current];
if (!b) return;
unsigned char* buf = qe_malloc_array(unsigned char, b->total_size);
if (!buf) return;
eb_read(b, 0, buf, b->total_size);
XChangeProperty(ts->display, rq->requestor, rq->property,
XA_STRING, 8, PropModeReplace,
buf, b->total_size);
qe_free(&buf);
} else if (rq->target == ts->xa_utf8_string ||
rq->target == ts->xa_utf8_string2 ||
rq->target == ts->xa_utf8_string3) {
int len, size;
/* get qemacs yank buffer */
EditBuffer* b = qs->yank_buffers[qs->yank_current];
if (!b) return;
/* Get buffer contents encoded in utf-8-unix */
size = eb_get_content_size(b) + 1;
unsigned char* buf = qe_malloc_array(unsigned char, size);
if (!buf) return;
len = eb_get_contents(b, (char *)buf, size);
XChangeProperty(ts->display, rq->requestor, rq->property,
rq->target, 8, PropModeReplace,
buf, len);
qe_free(&buf);
}
reply.xselection.property = rq->property;
XSendEvent(ts->display, rq->requestor, True, 0, &reply);
XFlush(ts->display);
} else if(xev.type == SelectionRequest) {
/* ask qemacs to stop visual notification of selection */
ev->type = QE_SELECTION_CLEAR_EVENT;
qe_handle_event(ev);
}
}
}
#endif
static void tty_dpy_fill_rectangle(QEditScreen *s,
int x1, int y1, int w, int h, QEColor color)
{
TTYState *ts = s->priv_data;
int x, y;
int x2 = x1 + w;
int y2 = y1 + h;
int wrap = s->width - w;
TTYChar *ptr;
unsigned int bgcolor;
ptr = ts->screen + y1 * s->width + x1;
bgcolor = qe_map_color(color, ts->tty_colors, ts->tty_bg_colors_count, NULL);
for (y = y1; y < y2; y++) {
ts->line_updated[y] = 1;
for (x = x1; x < x2; x++) {
*ptr = TTY_CHAR(' ', 7, bgcolor);
ptr++;
}
ptr += wrap;
}
}
static void tty_dpy_xor_rectangle(QEditScreen *s,
int x1, int y1, int w, int h, QEColor color)
{
TTYState *ts = s->priv_data;
int x, y;
int x2 = x1 + w;
int y2 = y1 + h;
int wrap = s->width - w;
TTYChar *ptr;
ptr = ts->screen + y1 * s->width + x1;
for (y = y1; y < y2; y++) {
ts->line_updated[y] = 1;
for (x = x1; x < x2; x++) {
/* XXX: should reverse fg and bg */
*ptr ^= TTY_CHAR(0, 7, 7);
ptr++;
}
ptr += wrap;
}
}
/* XXX: could alloc font in wrapper */
static QEFont *tty_dpy_open_font(qe__unused__ QEditScreen *s,
qe__unused__ int style, qe__unused__ int size)
{
QEFont *font;
font = qe_mallocz(QEFont);
if (!font)
return NULL;
font->ascent = 0;
font->descent = 1;
font->priv_data = NULL;
return font;
}
static void tty_dpy_close_font(qe__unused__ QEditScreen *s, QEFont **fontp)
{
#ifdef X11_IN_TTY
TTYState *ts = s->priv_data;
XCloseDisplay(ts->display);
#endif
qe_free(fontp);
}
static inline int tty_term_glyph_width(qe__unused__ QEditScreen *s, unsigned int ucs)
{
/* fast test for majority of non-wide scripts */
if (ucs < 0x300)
return 1;
return unicode_tty_glyph_width(ucs);
}
static void tty_dpy_text_metrics(QEditScreen *s, qe__unused__ QEFont *font,
QECharMetrics *metrics,
const unsigned int *str, int len)
{
int i, x;
metrics->font_ascent = font->ascent;
metrics->font_descent = font->descent;
x = 0;
for (i = 0; i < len; i++)
x += tty_term_glyph_width(s, str[i]);
metrics->width = x;
}
#if MAX_UNICODE_DISPLAY > 0xFFFF
static unsigned int comb_cache_add(TTYState *ts, const unsigned int *seq, int len) {
unsigned int *ip;
for (ip = ts->comb_cache; *ip; ip += *ip & 0xFFFF) {
if (*ip == len + 1U && !memcmp(ip + 1, seq, len * sizeof(*ip))) {
return TTY_CHAR_COMB + (ip - ts->comb_cache);
}
}
for (ip = ts->comb_cache; *ip; ip += *ip & 0xFFFF) {
if (*ip >= 0x10001U + len) {
/* found free slot */
if (*ip > 0x10001U + len) {
/* split free block */
ip[len + 1] = *ip - (len + 1);
}
break;
}
}
if (*ip == 0) {
if ((ip - ts->comb_cache) + len + 1 >= countof(ts->comb_cache)) {
return TTY_CHAR_BAD;
}
ip[len + 1] = 0;
}
*ip = len + 1;
memcpy(ip + 1, seq, len * sizeof(*ip));
return TTY_CHAR_COMB + (ip - ts->comb_cache);
}
static void comb_cache_clean(TTYState *ts, const TTYChar *screen, int len) {
unsigned int *ip;
int i;
if (ts->comb_cache[0] == 0)
return;
for (ip = ts->comb_cache; *ip != 0; ip += *ip & 0xFFFF) {
*ip |= 0x10000;
}
ip = ts->comb_cache;
for (i = 0; i < len; i++) {
int ch = TTY_CHAR_GET_CH(screen[i]);
if (ch >= TTY_CHAR_COMB && ch < TTY_CHAR_COMB + countof(ts->comb_cache) - 1) {
ip[ch - TTY_CHAR_COMB] &= ~0x10000;
}
}
for (; *ip != 0; ip += *ip & 0xFFFF) {
if (*ip & 0x10000) {
while (ip[*ip & 0xFFFF] & 0x10000) {
/* coalesce subsequent free blocks */
*ip += ip[*ip & 0xFFFF] & 0xFFFF;
}
if (ip[*ip & 0xFFFF] == 0) {
/* truncate free list */
*ip = 0;
break;
}
}
}
}
static void comb_cache_describe(QEditScreen *s, EditBuffer *b) {
TTYState *ts = s->priv_data;
unsigned int *ip;
unsigned int i;
int w = 16;