6dbffb4024
changed command definitions accordingly. added C-x C-g binding for abort added C-\ binding for call-last-kbd-macro changed binding for switch-input-method to C-x C-\ added commands: not-modified on A-~ (reset buffer modified flag) load-file-from-path(file) mark-whole-buffer() on C-x h count-lines() on C-x l what-cursor-position on C-x = allow key_grabber to quit and unget last key. added splitpath() to dispatch directory and filename into separate buffers. make separate functions for show_version and show_usage. make separate function for parse_command_line. added command line options: --help -h display help message and exit --no-init-file -q do not load config files --user -u load ~USER/.qe/config instead of your own --version -V display version information and exit added -- as a marker for end of command line options. allow most keys to be transmitted to shell process, including function keys. improved shell buffer escape sequence parser. added automatic detection of full screen shell applications and grab all keys try mc, Menuconfig, or even qemacs within qemacs ! improved *trace* buffer: do not trace keys when trace buffer is current, thus allowing navigation without side-effects improved Makefile to not make html stuff if disabled reduced CONFIG_TINY feature set
701 lines
19 KiB
C
701 lines
19 KiB
C
/*
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* TTY handling for QEmacs
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* Copyright (c) 2000,2001 Fabrice Bellard.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <unistd.h>
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#include <termios.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include "qe.h"
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typedef struct TTYChar {
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unsigned short ch;
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unsigned char bgcolor;
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unsigned char fgcolor;
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} TTYChar;
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enum InputState {
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IS_NORM,
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IS_ESC,
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IS_CSI,
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IS_CSI2,
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IS_ESC2,
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};
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typedef struct TTYState {
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TTYChar *old_screen;
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TTYChar *screen;
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unsigned char *line_updated;
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struct termios oldtty;
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int cursor_x, cursor_y;
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/* input handling */
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enum InputState input_state;
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int input_param;
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int utf8_state;
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int utf8_index;
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unsigned char buf[10];
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} TTYState;
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static void tty_resize(int sig);
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static void term_exit(void);
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static void tty_read_handler(void *opaque);
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static struct TTYState tty_state;
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static QEditScreen *tty_screen;
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static int term_probe(void)
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{
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return 1;
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}
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extern QEDisplay tty_dpy;
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static int term_init(QEditScreen *s, int w, int h)
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{
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TTYState *ts;
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struct termios tty;
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struct sigaction sig;
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char *term;
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memcpy(&s->dpy, &tty_dpy, sizeof(QEDisplay));
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tty_screen = s;
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ts = &tty_state;
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s->private = ts;
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s->media = CSS_MEDIA_TTY;
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tcgetattr (0, &tty);
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ts->oldtty = tty;
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tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
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|INLCR|IGNCR|ICRNL|IXON);
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tty.c_oflag |= OPOST;
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tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
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tty.c_cflag &= ~(CSIZE|PARENB);
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tty.c_cflag |= CS8;
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tty.c_cc[VMIN] = 1;
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tty.c_cc[VTIME] = 0;
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tcsetattr(0, TCSANOW, &tty);
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s->charset = &charset_vt100;
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#ifndef CONFIG_CYGWIN
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/* CG: Should also have a command line switch */
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/* test UTF8 support by looking at the cursor position (idea from
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Ricardas Cepas <rch@pub.osf.lt>). Since uClibc actually tests
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to ensure that the format string is a valid multibyte sequence
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in the current locale (ANSI/ISO C99), use a format specifier of
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%s to avoid printf() failing with EILSEQ. */
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{
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int y, x;
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/* ^X ^Z ^M \170101 */
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//printf("%s", "\030\032" "\r\xEF\x81\x81" "\033[6n\033D");
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/* Just print utf-8 encoding for eacute and check cursor position */
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printf("%s", "\030\032" "\r\xC3\xA9" "\033[6n\033D");
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scanf("\033[%u;%u", &y, &x);/* get cursor position */
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printf("\033[1F" "\033[%uX", (x-1)); /* go back; erase 1 or 3 char */
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if (x == 2) {
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s->charset = &charset_utf8;
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}
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}
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#endif
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printf("\033[?1048h\033[?1047h" /* enable cup */
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"\033)0\033(B" /* select character sets in block 0 and 1 */
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"\017"); /* shift out */
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atexit(term_exit);
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sig.sa_handler = tty_resize;
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sigemptyset(&sig.sa_mask);
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sig.sa_flags = 0;
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sigaction(SIGWINCH, &sig, NULL);
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fcntl(0, F_SETFL, O_NONBLOCK);
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/* If stdout is to a pty, make sure we aren't in nonblocking mode.
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* Otherwise, the printf()s in term_flush() can fail with EAGAIN,
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* causing repaint errors when running in an xterm or in a screen
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* session. */
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fcntl(1, F_SETFL, 0);
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set_read_handler(0, tty_read_handler, s);
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tty_resize(0);
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/* Test TERM env var:
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* linux and xterm -> kbs=\177
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* ansi cygwin vt100 -> kbs=^H
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*/
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term = getenv("TERM");
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if (term) {
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if (strstart(term, "ansi", NULL) ||
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strstart(term, "cygwin", NULL) ||
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strstart(term, "vt", NULL)) {
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do_toggle_control_h(NULL, 1);
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}
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}
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return 0;
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}
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static void term_close(QEditScreen *s)
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{
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fcntl(0, F_SETFL, 0);
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/* go to the last line */
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printf("\033[%d;%dH\033[m\033[K"
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"\033[?1047l\033[?1048l", /* disable cup */
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s->height, 1);
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fflush(stdout);
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}
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static void term_exit(void)
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{
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QEditScreen *s = tty_screen;
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TTYState *ts = s->private;
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tcsetattr(0, TCSANOW, &ts->oldtty);
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}
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static void tty_resize(int sig)
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{
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QEditScreen *s = tty_screen;
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TTYState *ts = s->private;
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struct winsize ws;
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int size;
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s->width = 80;
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s->height = 24;
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if (ioctl(0, TIOCGWINSZ, &ws) == 0) {
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s->width = ws.ws_col;
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s->height = ws.ws_row;
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}
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size = s->width * s->height * sizeof(TTYChar);
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ts->old_screen = realloc(ts->old_screen, size);
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ts->screen = realloc(ts->screen, size);
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ts->line_updated = realloc(ts->line_updated, s->height);
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memset(ts->old_screen, 0, size);
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memset(ts->screen, ' ', size);
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memset(ts->line_updated, 1, s->height);
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s->clip_x1 = 0;
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s->clip_y1 = 0;
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s->clip_x2 = s->width;
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s->clip_y2 = s->height;
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}
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static void term_invalidate(void)
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{
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tty_resize(0);
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}
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static void term_cursor_at(QEditScreen *s, int x1, int y1, int w, int h)
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{
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TTYState *ts = s->private;
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ts->cursor_x = x1;
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ts->cursor_y = y1;
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}
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static int term_is_user_input_pending(QEditScreen *s)
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{
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fd_set rfds;
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struct timeval tv;
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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FD_ZERO(&rfds);
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FD_SET(0, &rfds);
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if (select(1, &rfds, NULL, NULL, &tv) > 0)
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return 1;
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else
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return 0;
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}
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static int const csi_lookup[] = {
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KEY_NONE, /* 0 */
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KEY_HOME, /* 1 */
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KEY_INSERT, /* 2 */
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KEY_DELETE, /* 3 */
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KEY_END, /* 4 */
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KEY_PAGEUP, /* 5 */
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KEY_PAGEDOWN, /* 6 */
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KEY_NONE, /* 7 */
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KEY_NONE, /* 8 */
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KEY_NONE, /* 9 */
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KEY_NONE, /* 10 */
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KEY_F1, /* 11 */
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KEY_F2, /* 12 */
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KEY_F3, /* 13 */
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KEY_F4, /* 14 */
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KEY_F5, /* 15 */
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KEY_NONE, /* 16 */
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KEY_F6, /* 17 */
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KEY_F7, /* 18 */
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KEY_F8, /* 19 */
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KEY_F9, /* 20 */
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KEY_F10, /* 21 */
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KEY_NONE, /* 22 */
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KEY_F11, /* 23 */
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KEY_F12, /* 24 */
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KEY_F13, /* 25 */
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KEY_F14, /* 26 */
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KEY_NONE, /* 27 */
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KEY_F15, /* 28 */
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KEY_F16, /* 29 */
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KEY_NONE, /* 30 */
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KEY_F17, /* 31 */
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KEY_F18, /* 32 */
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KEY_F19, /* 33 */
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KEY_F20, /* 34 */
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};
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static void tty_read_handler(void *opaque)
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{
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QEditScreen *s = opaque;
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QEmacsState *qs = &qe_state;
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TTYState *ts = s->private;
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int ch;
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QEEvent ev1, *ev = &ev1;
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if (read(0, ts->buf + ts->utf8_index, 1) != 1)
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return;
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if (trace_buffer &&
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qs->active_window &&
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qs->active_window->b != trace_buffer) {
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eb_write(trace_buffer, trace_buffer->total_size,
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ts->buf + ts->utf8_index, 1);
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#if 0
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ch = ts->buf[ts->utf8_index];
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if (ch < 32 || ch == 127)
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fprintf(stderr, "got %d '^%c'\n", ch, ('@' + ch) & 127);
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else
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fprintf(stderr, "got %d '%c'\n", ch, ch);
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#endif
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}
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/* charset handling */
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if (s->charset == &charset_utf8) {
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if (ts->utf8_state == 0) {
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const char *p;
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p = ts->buf;
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ch = utf8_decode(&p);
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} else {
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ts->utf8_state = utf8_length[ts->buf[0]] - 1;
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ts->utf8_index = 0;
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return;
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}
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} else {
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ch = ts->buf[0];
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}
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switch (ts->input_state) {
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case IS_NORM:
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if (ch == '\033')
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ts->input_state = IS_ESC;
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else
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goto the_end;
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break;
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case IS_ESC:
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if (ch == '\033') {
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/* cygwin A-right transmit ESC ESC[C ... */
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goto the_end;
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}
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if (ch == '[') {
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ts->input_state = IS_CSI;
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ts->input_param = 0;
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} else if (ch == 'O') {
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ts->input_state = IS_ESC2;
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} else {
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ch = KEY_META(ch);
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ts->input_state = IS_NORM;
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goto the_end;
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}
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break;
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case IS_CSI:
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if (isdigit(ch)) {
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ts->input_param = ts->input_param * 10 + ch - '0';
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break;
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}
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ts->input_state = IS_NORM;
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switch(ch) {
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case '[':
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ts->input_state = IS_CSI2;
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break;
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case '~':
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if (ts->input_param < sizeof(csi_lookup)/sizeof(csi_lookup[0])) {
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ch = csi_lookup[ts->input_param];
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goto the_end;
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}
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break;
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/* All these for ansi|cygwin */
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case 'A': ch = KEY_UP; goto the_end; // kcuu1
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case 'B': ch = KEY_DOWN; goto the_end; // kcud1
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case 'C': ch = KEY_RIGHT; goto the_end; // kcuf1
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case 'D': ch = KEY_LEFT; goto the_end; // kcub1
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case 'F': ch = KEY_END; goto the_end; // kend
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//case 'G': ch = KEY_CENTER; goto the_end; // kb2
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case 'H': ch = KEY_HOME; goto the_end; // khome
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case 'L': ch = KEY_INSERT; goto the_end; // kich1
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//case 'M': ch = KEY_MOUSE; goto the_end; // kmous
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case 'Z': ch = KEY_SHIFT_TAB; goto the_end; // kcbt
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default:
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#if 0 /* xterm CTRL-arrows */
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if (ts->input_param == 5) {
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switch (ch) {
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case 'A': ch = KEY_CTRL_UP; goto the_end;
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case 'B': ch = KEY_CTRL_DOWN; goto the_end;
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case 'C': ch = KEY_CTRL_RIGHT; goto the_end;
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case 'D': ch = KEY_CTRL_LEFT; goto the_end;
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}
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}
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#endif
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break;
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}
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break;
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case IS_CSI2:
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/* cygwin/linux terminal */
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ts->input_state = IS_NORM;
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switch(ch) {
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case 'A': ch = KEY_F1; goto the_end;
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case 'B': ch = KEY_F2; goto the_end;
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case 'C': ch = KEY_F3; goto the_end;
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case 'D': ch = KEY_F4; goto the_end;
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case 'E': ch = KEY_F5; goto the_end;
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}
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break;
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case IS_ESC2: // "\EO"
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/* xterm/vt100 fn */
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ts->input_state = IS_NORM;
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switch(ch) {
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case 'A': ch = KEY_UP; goto the_end;
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case 'B': ch = KEY_DOWN; goto the_end;
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case 'C': ch = KEY_RIGHT; goto the_end;
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case 'D': ch = KEY_LEFT; goto the_end;
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case 'P': ch = KEY_F1; goto the_end;
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case 'Q': ch = KEY_F2; goto the_end;
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case 'R': ch = KEY_F3; goto the_end;
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case 'S': ch = KEY_F4; goto the_end;
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case 't': ch = KEY_F5; goto the_end;
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case 'u': ch = KEY_F6; goto the_end;
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case 'v': ch = KEY_F7; goto the_end;
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case 'l': ch = KEY_F8; goto the_end;
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case 'w': ch = KEY_F9; goto the_end;
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case 'x': ch = KEY_F10; goto the_end;
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}
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break;
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the_end:
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ev->key_event.type = QE_KEY_EVENT;
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ev->key_event.key = ch;
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qe_handle_event(ev);
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break;
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}
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}
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static inline int color_dist(unsigned int c1, unsigned c2)
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{
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return (abs( (c1 & 0xff) - (c2 & 0xff)) +
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2 * abs( ((c1 >> 8) & 0xff) - ((c2 >> 8) & 0xff)) +
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abs( ((c1 >> 16) & 0xff) - ((c2 >> 16) & 0xff)));
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}
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#define NB_COLORS 8
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unsigned int tty_colors[NB_COLORS] = {
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QERGB(0x00, 0x00, 0x00),
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QERGB(0xff, 0x00, 0x00),
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QERGB(0x00, 0xff, 0x00),
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QERGB(0xff, 0xff, 0x00),
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QERGB(0x00, 0x00, 0xff),
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QERGB(0xff, 0x00, 0xff),
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QERGB(0x00, 0xff, 0xff),
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QERGB(0xff, 0xff, 0xff),
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};
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static int get_tty_color(QEColor color)
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{
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int i, cmin, dmin, d;
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dmin = MAXINT;
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cmin = 0;
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for(i=0;i<NB_COLORS;i++) {
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d = color_dist(color, tty_colors[i]);
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if (d < dmin) {
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cmin = i;
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dmin = d;
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}
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}
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return cmin;
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}
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static void term_fill_rectangle(QEditScreen *s,
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int x1, int y1, int w, int h, QEColor color)
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{
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TTYState *ts = s->private;
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int x2 = x1 + w;
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int y2 = y1 + h;
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int x, y;
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TTYChar *ptr;
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int wrap = s->width - w;
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int bgcolor;
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ptr = ts->screen + y1 * s->width + x1;
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if (color == QECOLOR_XOR) {
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for(y=y1;y<y2;y++) {
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ts->line_updated[y] = 1;
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for(x=x1;x<x2;x++) {
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ptr->bgcolor ^= 7;
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ptr->fgcolor ^= 7;
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ptr++;
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}
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ptr += wrap;
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}
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} else {
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bgcolor = get_tty_color(color);
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for(y=y1;y<y2;y++) {
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ts->line_updated[y] = 1;
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for(x=x1;x<x2;x++) {
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ptr->bgcolor = bgcolor;
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ptr->ch = ' ';
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ptr->fgcolor = 7;
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ptr++;
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}
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ptr += wrap;
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}
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}
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}
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|
/* XXX: could alloc font in wrapper */
|
|
static QEFont *term_open_font(QEditScreen *s,
|
|
int style, int size)
|
|
{
|
|
QEFont *font;
|
|
font = malloc(sizeof(QEFont));
|
|
if (!font)
|
|
return NULL;
|
|
font->ascent = 0;
|
|
font->descent = 1;
|
|
font->private = NULL;
|
|
return font;
|
|
}
|
|
|
|
static void term_close_font(QEditScreen *s, QEFont *font)
|
|
{
|
|
free(font);
|
|
}
|
|
|
|
/*
|
|
* Modified implementation of wcwidth() from Markus Kuhn. We do not
|
|
* handle non spacing and enclosing combining characters and control
|
|
* chars.
|
|
*/
|
|
|
|
static int term_glyph_width(QEditScreen *s, unsigned int ucs)
|
|
{
|
|
/* fast test for majority of non-wide scripts */
|
|
if (ucs < 0x900)
|
|
return 1;
|
|
|
|
return 1 +
|
|
((ucs >= 0x1100 && ucs <= 0x115f) || /* Hangul Jamo */
|
|
(ucs >= 0x2e80 && ucs <= 0xa4cf && (ucs & ~0x0011) != 0x300a &&
|
|
ucs != 0x303f) || /* CJK ... Yi */
|
|
(ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */
|
|
(ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */
|
|
(ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */
|
|
(ucs >= 0xff00 && ucs <= 0xff5f) || /* Fullwidth Forms */
|
|
(ucs >= 0xffe0 && ucs <= 0xffe6)
|
|
);
|
|
}
|
|
|
|
static void term_text_metrics(QEditScreen *s, 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 += term_glyph_width(s, str[i]);
|
|
metrics->width = x;
|
|
}
|
|
|
|
static void term_draw_text(QEditScreen *s, QEFont *font,
|
|
int x, int y, const unsigned int *str, int len,
|
|
QEColor color)
|
|
{
|
|
TTYState *ts = s->private;
|
|
TTYChar *ptr;
|
|
int fgcolor, w, n;
|
|
unsigned int cc;
|
|
|
|
if (y < s->clip_y1 ||
|
|
y >= s->clip_y2 ||
|
|
x >= s->clip_x2)
|
|
return;
|
|
|
|
ts->line_updated[y] = 1;
|
|
fgcolor = get_tty_color(color);
|
|
ptr = ts->screen + y * s->width;
|
|
|
|
if (x < s->clip_x1) {
|
|
ptr += s->clip_x1;
|
|
/* left clip */
|
|
while (len > 0) {
|
|
cc = *str++;
|
|
len--;
|
|
w = term_glyph_width(s, cc);
|
|
x += w;
|
|
if (x >= s->clip_x1) {
|
|
/* now we are on the screen. need to put spaces for
|
|
wide chars */
|
|
n = x;
|
|
if (s->clip_x2 < n)
|
|
n = s->clip_x2;
|
|
n -= s->clip_x1;
|
|
for(; n > 0; n--) {
|
|
ptr->fgcolor = fgcolor;
|
|
ptr->ch = ' ';
|
|
ptr++;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
ptr += x;
|
|
}
|
|
for (; len > 0; len--) {
|
|
cc = *str++;
|
|
w = term_glyph_width(s, cc);
|
|
/* XXX: would need to put spacs for wide chars */
|
|
if (x + w > s->clip_x2)
|
|
break;
|
|
ptr->fgcolor = fgcolor;
|
|
ptr->ch = cc;
|
|
ptr++;
|
|
n = w - 1;
|
|
while (n > 0) {
|
|
ptr->fgcolor = fgcolor;
|
|
ptr->ch = 0xffff;
|
|
ptr++;
|
|
n--;
|
|
}
|
|
x += w;
|
|
}
|
|
}
|
|
|
|
static void term_set_clip(QEditScreen *s,
|
|
int x, int y, int w, int h)
|
|
{
|
|
}
|
|
|
|
static void term_flush(QEditScreen *s)
|
|
{
|
|
TTYState *ts = s->private;
|
|
TTYChar *ptr, *optr;
|
|
int x, y, bgcolor, fgcolor;
|
|
char buf[10];
|
|
unsigned int cc;
|
|
|
|
bgcolor = -1;
|
|
fgcolor = -1;
|
|
|
|
for (y = 0; y < s->height; y++) {
|
|
if (ts->line_updated[y]) {
|
|
ts->line_updated[y] = 0;
|
|
ptr = ts->screen + y * s->width;
|
|
optr = ts->old_screen + y * s->width;
|
|
|
|
if (memcmp(ptr, optr, sizeof(TTYChar) * s->width) != 0) {
|
|
/* XXX: currently, we update the whole line */
|
|
printf("\033[%d;%dH", y + 1, 1);
|
|
for (x = 0; x < s->width; x++) {
|
|
cc = ptr->ch;
|
|
if (cc != 0xffff) {
|
|
/* output attributes */
|
|
if (((fgcolor != ptr->fgcolor && cc != ' ') ||
|
|
(bgcolor != ptr->bgcolor))) {
|
|
fgcolor = ptr->fgcolor;
|
|
bgcolor = ptr->bgcolor;
|
|
printf("\033[;%d;%dm",
|
|
30 + fgcolor, 40 + bgcolor);
|
|
}
|
|
/* do not display escape codes or invalid codes */
|
|
if (cc < 32) {
|
|
buf[0] = '.';
|
|
buf[1] = '\0';
|
|
} else
|
|
if (cc >= 128 && cc < 128 + 32) {
|
|
/* Kludge for linedrawing chars */
|
|
buf[0] = '\016';
|
|
buf[1] = cc - 32;
|
|
buf[2] = '\017';
|
|
buf[3] = '\0';
|
|
} else {
|
|
unicode_to_charset(buf, cc, s->charset);
|
|
}
|
|
if (x != s->width - 1 || y != s->height - 1)
|
|
printf("%s", buf);
|
|
}
|
|
/* update old screen data */
|
|
*optr++ = *ptr++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
printf("\033[%d;%dH", ts->cursor_y + 1, ts->cursor_x + 1);
|
|
fflush(stdout);
|
|
}
|
|
|
|
|
|
static QEDisplay tty_dpy = {
|
|
"vt100",
|
|
term_probe,
|
|
term_init,
|
|
term_close,
|
|
term_cursor_at,
|
|
term_flush,
|
|
term_is_user_input_pending,
|
|
term_fill_rectangle,
|
|
term_open_font,
|
|
term_close_font,
|
|
term_text_metrics,
|
|
term_draw_text,
|
|
term_set_clip,
|
|
NULL, /* no selection handling */
|
|
NULL, /* no selection handling */
|
|
term_invalidate,
|
|
};
|
|
|
|
static int tty_init(void)
|
|
{
|
|
return qe_register_display(&tty_dpy);
|
|
}
|
|
|
|
qe_module_init(tty_init);
|