69e9658da0
Implement the vt102 editing commands, and insert/replace mode. Signed-off-by: Callum Lowcay <callum@callumscode.com>
1650 lines
44 KiB
C
1650 lines
44 KiB
C
/*
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* Copyright © 2008 Kristian Høgsberg
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include <pty.h>
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#include <ctype.h>
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#include <cairo.h>
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#include <glib.h>
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#include <X11/keysym.h>
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#include "wayland-util.h"
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#include "wayland-client.h"
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#include "wayland-glib.h"
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#include "window.h"
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static int option_fullscreen;
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#define MOD_SHIFT 0x01
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#define MOD_ALT 0x02
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#define MOD_CTRL 0x04
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#define ATTRMASK_BOLD 0x01
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#define ATTRMASK_UNDERLINE 0x02
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#define ATTRMASK_BLINK 0x04
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#define ATTRMASK_INVERSE 0x08
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/* Buffer sizes */
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#define MAX_RESPONSE 11
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#define MAX_ESCAPE 64
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/* Terminal modes */
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#define MODE_SHOW_CURSOR 0x00000001
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#define MODE_INVERSE 0x00000002
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#define MODE_AUTOWRAP 0x00000004
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#define MODE_AUTOREPEAT 0x00000008
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#define MODE_LF_NEWLINE 0x00000010
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#define MODE_IRM 0x00000020
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union utf8_char {
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unsigned char byte[4];
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uint32_t ch;
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};
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enum utf8_state {
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utf8state_start,
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utf8state_accept,
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utf8state_reject,
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utf8state_expect3,
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utf8state_expect2,
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utf8state_expect1
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};
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struct utf8_state_machine {
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enum utf8_state state;
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int len;
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union utf8_char s;
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};
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static void
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init_state_machine(struct utf8_state_machine *machine)
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{
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machine->state = utf8state_start;
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machine->len = 0;
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machine->s.ch = 0;
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}
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static enum utf8_state
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utf8_next_char(struct utf8_state_machine *machine, char c)
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{
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switch(machine->state) {
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case utf8state_start:
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case utf8state_accept:
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case utf8state_reject:
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machine->s.ch = 0;
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machine->len = 0;
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if(c == 0xC0 || c == 0xC1) {
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/* overlong encoding, reject */
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machine->state = utf8state_reject;
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} else if((c & 0x80) == 0) {
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/* single byte, accept */
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machine->s.byte[machine->len++] = c;
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machine->state = utf8state_accept;
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} else if((c & 0xC0) == 0x80) {
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/* parser out of sync, ignore byte */
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machine->state = utf8state_start;
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} else if((c & 0xE0) == 0xC0) {
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/* start of two byte sequence */
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machine->s.byte[machine->len++] = c;
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machine->state = utf8state_expect1;
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} else if((c & 0xF0) == 0xE0) {
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/* start of three byte sequence */
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machine->s.byte[machine->len++] = c;
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machine->state = utf8state_expect2;
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} else if((c & 0xF8) == 0xF0) {
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/* start of four byte sequence */
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machine->s.byte[machine->len++] = c;
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machine->state = utf8state_expect3;
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} else {
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/* overlong encoding, reject */
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machine->state = utf8state_reject;
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}
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break;
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case utf8state_expect3:
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machine->s.byte[machine->len++] = c;
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if((c & 0xC0) == 0x80) {
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/* all good, continue */
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machine->state = utf8state_expect2;
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} else {
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/* missing extra byte, reject */
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machine->state = utf8state_reject;
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}
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break;
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case utf8state_expect2:
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machine->s.byte[machine->len++] = c;
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if((c & 0xC0) == 0x80) {
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/* all good, continue */
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machine->state = utf8state_expect1;
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} else {
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/* missing extra byte, reject */
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machine->state = utf8state_reject;
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}
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break;
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case utf8state_expect1:
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machine->s.byte[machine->len++] = c;
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if((c & 0xC0) == 0x80) {
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/* all good, accept */
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machine->state = utf8state_accept;
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} else {
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/* missing extra byte, reject */
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machine->state = utf8state_reject;
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}
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break;
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default:
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machine->state = utf8state_reject;
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break;
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}
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return machine->state;
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}
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struct terminal_color { double r, g, b, a; };
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struct attr {
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unsigned char fg, bg;
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char a; /* attributes format:
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* 76543210
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* ilub */
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char r; /* reserved */
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};
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struct color_scheme {
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struct terminal_color palette[16];
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struct terminal_color border;
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struct attr default_attr;
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};
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static void
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attr_init(struct attr *data_attr, struct attr attr, int n)
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{
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int i;
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for (i = 0; i < n; i++) {
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data_attr[i] = attr;
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}
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}
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struct terminal {
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struct window *window;
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struct display *display;
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union utf8_char *data;
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char *tab_ruler;
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struct attr *data_attr;
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struct attr curr_attr;
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uint32_t mode;
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char origin_mode;
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char saved_origin_mode;
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struct attr saved_attr;
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union utf8_char last_char;
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int margin_top, margin_bottom;
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int data_pitch, attr_pitch; /* The width in bytes of a line */
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int width, height, start, row, column;
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int saved_row, saved_column;
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int fd, master;
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GIOChannel *channel;
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uint32_t modifiers;
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char escape[MAX_ESCAPE];
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int escape_length;
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int state;
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int qmark_flag;
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struct utf8_state_machine state_machine;
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int margin;
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int fullscreen;
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int focused;
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struct color_scheme *color_scheme;
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struct terminal_color color_table[256];
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cairo_font_extents_t extents;
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cairo_font_face_t *font_normal, *font_bold;
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};
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/* Create default tab stops, every 8 characters */
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static void
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terminal_init_tabs(struct terminal *terminal)
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{
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int i = 0;
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while (i < terminal->width) {
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if (i % 8 == 0)
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terminal->tab_ruler[i] = 1;
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else
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terminal->tab_ruler[i] = 0;
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i++;
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}
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}
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static void
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terminal_init(struct terminal *terminal)
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{
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terminal->curr_attr = terminal->color_scheme->default_attr;
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terminal->origin_mode = 0;
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terminal->mode = MODE_SHOW_CURSOR |
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MODE_AUTOREPEAT |
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MODE_AUTOWRAP;
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terminal->row = 0;
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terminal->column = 0;
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terminal->saved_attr = terminal->curr_attr;
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terminal->saved_origin_mode = terminal->origin_mode;
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terminal->saved_row = terminal->row;
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terminal->saved_column = terminal->column;
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if (terminal->tab_ruler != NULL) terminal_init_tabs(terminal);
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}
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static void
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init_color_table(struct terminal *terminal)
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{
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int c, r;
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struct terminal_color *color_table = terminal->color_table;
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for (c = 0; c < 256; c ++) {
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if (c < 16) {
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color_table[c] = terminal->color_scheme->palette[c];
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} else if (c < 232) {
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r = c - 16;
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color_table[c].b = ((double)(r % 6) / 6.0); r /= 6;
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color_table[c].g = ((double)(r % 6) / 6.0); r /= 6;
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color_table[c].r = ((double)(r % 6) / 6.0);
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color_table[c].a = 1.0;
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} else {
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r = (c - 232) * 10 + 8;
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color_table[c].r = ((double) r) / 256.0;
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color_table[c].g = color_table[c].r;
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color_table[c].b = color_table[c].r;
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color_table[c].a = 1.0;
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}
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}
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}
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static union utf8_char *
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terminal_get_row(struct terminal *terminal, int row)
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{
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int index;
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index = (row + terminal->start) % terminal->height;
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return &terminal->data[index * terminal->width];
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}
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static struct attr*
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terminal_get_attr_row(struct terminal *terminal, int row) {
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int index;
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index = (row + terminal->start) % terminal->height;
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return &terminal->data_attr[index * terminal->width];
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}
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static struct attr
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terminal_get_attr(struct terminal *terminal, int row, int col) {
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return terminal_get_attr_row(terminal, row)[col];
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}
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static void
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terminal_scroll_buffer(struct terminal *terminal, int d)
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{
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int i;
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d = d % (terminal->height + 1);
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terminal->start = (terminal->start + d) % terminal->height;
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if (terminal->start < 0) terminal->start = terminal->height + terminal->start;
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if(d < 0) {
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d = 0 - d;
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for(i = 0; i < d; i++) {
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memset(terminal_get_row(terminal, i), 0, terminal->data_pitch);
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attr_init(terminal_get_attr_row(terminal, i),
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terminal->curr_attr, terminal->width);
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}
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} else {
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for(i = terminal->height - d; i < terminal->height; i++) {
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memset(terminal_get_row(terminal, i), 0, terminal->data_pitch);
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attr_init(terminal_get_attr_row(terminal, i),
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terminal->curr_attr, terminal->width);
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}
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}
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}
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static void
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terminal_scroll_window(struct terminal *terminal, int d)
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{
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int i;
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int window_height;
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int from_row, to_row;
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struct attr *dup_attr;
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// scrolling range is inclusive
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window_height = terminal->margin_bottom - terminal->margin_top + 1;
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d = d % (window_height + 1);
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if(d < 0) {
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d = 0 - d;
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to_row = terminal->margin_bottom;
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from_row = terminal->margin_bottom - d;
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for (i = 0; i < (window_height - d); i++) {
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memcpy(terminal_get_row(terminal, to_row - i),
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terminal_get_row(terminal, from_row - i),
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terminal->data_pitch);
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memcpy(terminal_get_attr_row(terminal, to_row - i),
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terminal_get_attr_row(terminal, from_row - i),
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terminal->attr_pitch);
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}
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dup_attr = terminal_get_attr_row(terminal, terminal->margin_top);
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for (i = terminal->margin_top; i < (terminal->margin_top + d); i++) {
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memset(terminal_get_row(terminal, i), 0, terminal->data_pitch);
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if (i > terminal->margin_top) {
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memcpy(terminal_get_attr_row(terminal, i),
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dup_attr, terminal->attr_pitch);
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}
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}
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} else {
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to_row = terminal->margin_top;
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from_row = terminal->margin_top + d;
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for (i = 0; i < (window_height - d); i++) {
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memcpy(terminal_get_row(terminal, to_row + i),
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terminal_get_row(terminal, from_row + i),
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terminal->data_pitch);
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memcpy(terminal_get_attr_row(terminal, to_row + i),
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terminal_get_attr_row(terminal, from_row + i),
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terminal->attr_pitch);
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}
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dup_attr = terminal_get_attr_row(terminal, terminal->margin_bottom);
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for (i = terminal->margin_bottom - d + 1; i <= terminal->margin_bottom; i++) {
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memset(terminal_get_row(terminal, i), 0, terminal->data_pitch);
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if (i < terminal->margin_bottom) {
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memcpy(terminal_get_attr_row(terminal, i),
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dup_attr, terminal->attr_pitch);
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}
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}
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}
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}
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static void
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terminal_scroll(struct terminal *terminal, int d)
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{
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if(terminal->margin_top == 0 && terminal->margin_bottom == terminal->height - 1)
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terminal_scroll_buffer(terminal, d);
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else
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terminal_scroll_window(terminal, d);
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}
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static void
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terminal_shift_line(struct terminal *terminal, int d)
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{
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union utf8_char *row;
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struct attr *attr_row, attr;
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row = terminal_get_row(terminal, terminal->row);
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attr_row = terminal_get_attr_row(terminal, terminal->row);
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if ((terminal->width + d) <= terminal->column)
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d = terminal->column + 1 - terminal->width;
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if ((terminal->column + d) >= terminal->width)
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d = terminal->width - terminal->column - 1;
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if (d < 0) {
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d = 0 - d;
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memmove(&row[terminal->column],
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&row[terminal->column + d],
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(terminal->width - terminal->column - d) * sizeof(union utf8_char));
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attr = attr_row[terminal->width - 1];
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memmove(&attr_row[terminal->column], &attr_row[terminal->column + d],
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(terminal->width - terminal->column - d) * sizeof(struct attr));
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memset(&row[terminal->width - d], 0, d * sizeof(union utf8_char));
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attr_init(&attr_row[terminal->width - d], terminal->curr_attr, d);
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} else {
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memmove(&row[terminal->column + d], &row[terminal->column],
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(terminal->width - terminal->column - d) * sizeof(union utf8_char));
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memmove(&attr_row[terminal->column + d], &attr_row[terminal->column],
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(terminal->width - terminal->column - d) * sizeof(struct attr));
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memset(&row[terminal->column], 0, d * sizeof(union utf8_char));
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attr_init(&attr_row[terminal->column], terminal->curr_attr, d);
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}
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}
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static void
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terminal_resize(struct terminal *terminal, int width, int height)
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{
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size_t size;
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union utf8_char *data;
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struct attr *data_attr;
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char *tab_ruler;
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int data_pitch, attr_pitch;
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int i, l, total_rows, start;
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struct rectangle rectangle;
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struct winsize ws;
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if (terminal->width == width && terminal->height == height)
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return;
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data_pitch = width * sizeof(union utf8_char);
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size = data_pitch * height;
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data = malloc(size);
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attr_pitch = width * sizeof(struct attr);
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data_attr = malloc(attr_pitch * height);
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tab_ruler = malloc(width);
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memset(data, 0, size);
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memset(tab_ruler, 0, width);
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attr_init(data_attr, terminal->curr_attr, width * height);
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if (terminal->data && terminal->data_attr) {
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if (width > terminal->width)
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l = terminal->width;
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else
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l = width;
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if (terminal->height > height) {
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total_rows = height;
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start = terminal->height - height;
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} else {
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total_rows = terminal->height;
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start = 0;
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}
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for (i = 0; i < total_rows; i++) {
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memcpy(&data[width * i],
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terminal_get_row(terminal, i),
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l * sizeof(union utf8_char));
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memcpy(&data_attr[width * i],
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terminal_get_attr_row(terminal, i),
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l * sizeof(struct attr));
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}
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|
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free(terminal->data);
|
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free(terminal->data_attr);
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free(terminal->tab_ruler);
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}
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terminal->data_pitch = data_pitch;
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terminal->attr_pitch = attr_pitch;
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terminal->width = width;
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terminal->height = height;
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if(terminal->margin_bottom >= terminal->height)
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terminal->margin_bottom = terminal->height - 1;
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terminal->data = data;
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terminal->data_attr = data_attr;
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terminal->tab_ruler = tab_ruler;
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terminal_init_tabs(terminal);
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if (terminal->row >= terminal->height)
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terminal->row = terminal->height - 1;
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if (terminal->column >= terminal->width)
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terminal->column = terminal->width - 1;
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terminal->start = 0;
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if (!terminal->fullscreen) {
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rectangle.width = terminal->width *
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terminal->extents.max_x_advance + 2 * terminal->margin;
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rectangle.height = terminal->height *
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terminal->extents.height + 2 * terminal->margin;
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window_set_child_size(terminal->window, &rectangle);
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}
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|
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/* Update the window size */
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ws.ws_row = terminal->height;
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ws.ws_col = terminal->width;
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window_get_child_rectangle(terminal->window, &rectangle);
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ws.ws_xpixel = rectangle.width;
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ws.ws_ypixel = rectangle.height;
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ioctl(terminal->master, TIOCSWINSZ, &ws);
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}
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|
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struct color_scheme DEFAULT_COLORS = {
|
|
{
|
|
{0, 0, 0, 1}, /* black */
|
|
{0.66, 0, 0, 1}, /* red */
|
|
{0 , 0.66, 0, 1}, /* green */
|
|
{0.66, 0.33, 0, 1}, /* orange (nicer than muddy yellow) */
|
|
{0 , 0 , 0.66, 1}, /* blue */
|
|
{0.66, 0 , 0.66, 1}, /* magenta */
|
|
{0, 0.66, 0.66, 1}, /* cyan */
|
|
{0.66, 0.66, 0.66, 1}, /* light grey */
|
|
{0.22, 0.33, 0.33, 1}, /* dark grey */
|
|
{1, 0.33, 0.33, 1}, /* high red */
|
|
{0.33, 1, 0.33, 1}, /* high green */
|
|
{1, 1, 0.33, 1}, /* high yellow */
|
|
{0.33, 0.33, 1, 1}, /* high blue */
|
|
{1, 0.33, 1, 1}, /* high magenta */
|
|
{0.33, 1, 1, 1}, /* high cyan */
|
|
{1, 1, 1, 1} /* white */
|
|
},
|
|
{0, 0, 0, 1}, /* black border */
|
|
{7, 0, 0, } /* bg:black (0), fg:light gray (7) */
|
|
};
|
|
|
|
static void
|
|
terminal_draw_contents(struct terminal *terminal)
|
|
{
|
|
struct rectangle rectangle;
|
|
cairo_t *cr;
|
|
cairo_font_extents_t extents;
|
|
int top_margin, side_margin;
|
|
int row, col;
|
|
struct attr attr;
|
|
union utf8_char *p_row;
|
|
struct utf8_chars {
|
|
union utf8_char c;
|
|
char null;
|
|
} toShow;
|
|
int foreground, background, bold, underline, tmp;
|
|
int text_x, text_y;
|
|
cairo_surface_t *surface;
|
|
double d;
|
|
|
|
toShow.null = 0;
|
|
|
|
window_get_child_rectangle(terminal->window, &rectangle);
|
|
|
|
surface = display_create_surface(terminal->display, &rectangle);
|
|
cr = cairo_create(surface);
|
|
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
|
|
cairo_set_source_rgba(cr,
|
|
terminal->color_scheme->border.r,
|
|
terminal->color_scheme->border.g,
|
|
terminal->color_scheme->border.b,
|
|
terminal->color_scheme->border.a);
|
|
cairo_paint(cr);
|
|
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
|
|
|
|
cairo_set_font_face(cr, terminal->font_normal);
|
|
cairo_set_font_size(cr, 14);
|
|
|
|
cairo_font_extents(cr, &extents);
|
|
side_margin = (rectangle.width - terminal->width * extents.max_x_advance) / 2;
|
|
top_margin = (rectangle.height - terminal->height * extents.height) / 2;
|
|
|
|
cairo_set_line_width(cr, 1.0);
|
|
|
|
for (row = 0; row < terminal->height; row++) {
|
|
p_row = terminal_get_row(terminal, row);
|
|
for (col = 0; col < terminal->width; col++) {
|
|
/* get the attributes for this character cell */
|
|
attr = terminal_get_attr(terminal, row, col);
|
|
if ((attr.a & ATTRMASK_INVERSE) ||
|
|
((terminal->mode & MODE_SHOW_CURSOR) &&
|
|
terminal->focused && terminal->row == row &&
|
|
terminal->column == col))
|
|
{
|
|
foreground = attr.bg;
|
|
background = attr.fg;
|
|
} else {
|
|
foreground = attr.fg;
|
|
background = attr.bg;
|
|
}
|
|
if (terminal->mode & MODE_INVERSE) {
|
|
tmp = foreground;
|
|
foreground = background;
|
|
background = tmp;
|
|
}
|
|
bold = attr.a & (ATTRMASK_BOLD | ATTRMASK_BLINK);
|
|
underline = attr.a & ATTRMASK_UNDERLINE;
|
|
|
|
/* paint the background */
|
|
cairo_set_source_rgba(cr,
|
|
terminal->color_table[background].r,
|
|
terminal->color_table[background].g,
|
|
terminal->color_table[background].b,
|
|
terminal->color_table[background].a);
|
|
cairo_move_to(cr, side_margin + (col * extents.max_x_advance),
|
|
top_margin + (row * extents.height));
|
|
cairo_rel_line_to(cr, extents.max_x_advance, 0);
|
|
cairo_rel_line_to(cr, 0, extents.height);
|
|
cairo_rel_line_to(cr, -extents.max_x_advance, 0);
|
|
cairo_close_path(cr);
|
|
cairo_fill(cr);
|
|
|
|
/* paint the foreground */
|
|
if (bold)
|
|
cairo_set_font_face(cr, terminal->font_bold);
|
|
else
|
|
cairo_set_font_face(cr, terminal->font_normal);
|
|
cairo_set_source_rgba(cr,
|
|
terminal->color_table[foreground].r,
|
|
terminal->color_table[foreground].g,
|
|
terminal->color_table[foreground].b,
|
|
terminal->color_table[foreground].a);
|
|
|
|
text_x = side_margin + col * extents.max_x_advance;
|
|
text_y = top_margin + extents.ascent + row * extents.height;
|
|
if (underline) {
|
|
cairo_move_to(cr, text_x, text_y + 2);
|
|
cairo_line_to(cr, text_x + extents.max_x_advance, text_y + 2);
|
|
cairo_stroke(cr);
|
|
}
|
|
cairo_move_to(cr, text_x, text_y);
|
|
|
|
toShow.c = p_row[col];
|
|
cairo_show_text(cr, (char *) toShow.c.byte);
|
|
}
|
|
}
|
|
|
|
if ((terminal->mode & MODE_SHOW_CURSOR) && !terminal->focused) {
|
|
d = 0.5;
|
|
|
|
cairo_set_line_width(cr, 1);
|
|
cairo_move_to(cr, side_margin + terminal->column * extents.max_x_advance + d,
|
|
top_margin + terminal->row * extents.height + d);
|
|
cairo_rel_line_to(cr, extents.max_x_advance - 2 * d, 0);
|
|
cairo_rel_line_to(cr, 0, extents.height - 2 * d);
|
|
cairo_rel_line_to(cr, -extents.max_x_advance + 2 * d, 0);
|
|
cairo_close_path(cr);
|
|
|
|
cairo_stroke(cr);
|
|
}
|
|
|
|
cairo_destroy(cr);
|
|
|
|
window_copy_surface(terminal->window,
|
|
&rectangle,
|
|
surface);
|
|
|
|
cairo_surface_destroy(surface);
|
|
}
|
|
|
|
static void
|
|
terminal_draw(struct terminal *terminal)
|
|
{
|
|
struct rectangle rectangle;
|
|
int32_t width, height;
|
|
|
|
window_get_child_rectangle(terminal->window, &rectangle);
|
|
|
|
width = (rectangle.width - 2 * terminal->margin) /
|
|
(int32_t) terminal->extents.max_x_advance;
|
|
height = (rectangle.height - 2 * terminal->margin) /
|
|
(int32_t) terminal->extents.height;
|
|
terminal_resize(terminal, width, height);
|
|
|
|
window_draw(terminal->window);
|
|
terminal_draw_contents(terminal);
|
|
window_flush(terminal->window);
|
|
}
|
|
|
|
static void
|
|
redraw_handler(struct window *window, void *data)
|
|
{
|
|
struct terminal *terminal = data;
|
|
|
|
terminal_draw(terminal);
|
|
}
|
|
|
|
#define STATE_NORMAL 0
|
|
#define STATE_ESCAPE 1
|
|
#define STATE_ESCAPE_SPECIAL 2
|
|
#define STATE_ESCAPE_CSI 3
|
|
|
|
static void
|
|
terminal_data(struct terminal *terminal, const char *data, size_t length);
|
|
|
|
static void
|
|
handle_char(struct terminal *terminal, union utf8_char utf8);
|
|
|
|
static void
|
|
handle_sgr(struct terminal *terminal, int code);
|
|
|
|
static void
|
|
handle_term_parameter(struct terminal *terminal, int code, int sr)
|
|
{
|
|
int i;
|
|
|
|
if (terminal->qmark_flag) {
|
|
switch(code) {
|
|
case 3: /* DECCOLM */
|
|
if (sr)
|
|
terminal_resize(terminal, 132, 24);
|
|
else
|
|
terminal_resize(terminal, 80, 24);
|
|
|
|
/* set columns, but also home cursor and clear screen */
|
|
terminal->row = 0; terminal->column = 0;
|
|
for (i = 0; i < terminal->height; i++) {
|
|
memset(terminal_get_row(terminal, i),
|
|
0, terminal->data_pitch);
|
|
attr_init(terminal_get_attr_row(terminal, i),
|
|
terminal->curr_attr, terminal->width);
|
|
}
|
|
break;
|
|
case 5: /* DECSCNM */
|
|
if (sr) terminal->mode |= MODE_INVERSE;
|
|
else terminal->mode &= ~MODE_INVERSE;
|
|
break;
|
|
case 6: /* DECOM */
|
|
terminal->origin_mode = sr;
|
|
if (terminal->origin_mode)
|
|
terminal->row = terminal->margin_top;
|
|
else
|
|
terminal->row = 0;
|
|
terminal->column = 0;
|
|
break;
|
|
case 7: /* DECAWM */
|
|
if (sr) terminal->mode |= MODE_AUTOWRAP;
|
|
else terminal->mode &= ~MODE_AUTOWRAP;
|
|
break;
|
|
case 8: /* DECARM */
|
|
if (sr) terminal->mode |= MODE_AUTOREPEAT;
|
|
else terminal->mode &= ~MODE_AUTOREPEAT;
|
|
break;
|
|
case 25:
|
|
if (sr) terminal->mode |= MODE_SHOW_CURSOR;
|
|
else terminal->mode &= ~MODE_SHOW_CURSOR;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown parameter: ?%d\n", code);
|
|
break;
|
|
}
|
|
} else {
|
|
switch(code) {
|
|
case 4: /* IRM */
|
|
if (sr) terminal->mode |= MODE_IRM;
|
|
else terminal->mode &= ~MODE_IRM;
|
|
break;
|
|
case 20: /* LNM */
|
|
if (sr) terminal->mode |= MODE_LF_NEWLINE;
|
|
else terminal->mode &= ~MODE_LF_NEWLINE;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown parameter: %d\n", code);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_escape(struct terminal *terminal)
|
|
{
|
|
union utf8_char *row;
|
|
struct attr *attr_row;
|
|
char *p;
|
|
int i, count, x, y, top, bottom;
|
|
int args[10], set[10] = { 0, };
|
|
char response[MAX_RESPONSE] = {0, };
|
|
|
|
terminal->escape[terminal->escape_length++] = '\0';
|
|
i = 0;
|
|
p = &terminal->escape[2];
|
|
while ((isdigit(*p) || *p == ';') && i < 10) {
|
|
if (*p == ';') {
|
|
if (!set[i]) {
|
|
args[i] = 0;
|
|
set[i] = 1;
|
|
}
|
|
p++;
|
|
i++;
|
|
} else {
|
|
args[i] = strtol(p, &p, 10);
|
|
set[i] = 1;
|
|
}
|
|
}
|
|
|
|
switch (*p) {
|
|
case '@': /* ICH */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
terminal_shift_line(terminal, count);
|
|
break;
|
|
case 'A': /* CUU */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if (terminal->row - count >= terminal->margin_top)
|
|
terminal->row -= count;
|
|
else
|
|
terminal->row = terminal->margin_top;
|
|
break;
|
|
case 'B': /* CUD */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if (terminal->row + count <= terminal->margin_bottom)
|
|
terminal->row += count;
|
|
else
|
|
terminal->row = terminal->margin_bottom;
|
|
break;
|
|
case 'C': /* CUF */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if ((terminal->column + count) < terminal->width)
|
|
terminal->column += count;
|
|
else
|
|
terminal->column = terminal->width - 1;
|
|
break;
|
|
case 'D': /* CUB */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if ((terminal->column - count) >= 0)
|
|
terminal->column -= count;
|
|
else
|
|
terminal->column = 0;
|
|
break;
|
|
case 'E': /* CNL */
|
|
count = set[0] ? args[0] : 1;
|
|
if (terminal->row + count <= terminal->margin_bottom)
|
|
terminal->row += count;
|
|
else
|
|
terminal->row = terminal->margin_bottom;
|
|
terminal->column = 0;
|
|
break;
|
|
case 'F': /* CPL */
|
|
count = set[0] ? args[0] : 1;
|
|
if (terminal->row - count >= terminal->margin_top)
|
|
terminal->row -= count;
|
|
else
|
|
terminal->row = terminal->margin_top;
|
|
terminal->column = 0;
|
|
break;
|
|
case 'G': /* CHA */
|
|
y = set[0] ? args[0] : 1;
|
|
y = y <= 0 ? 1 : y > terminal->width ? terminal->width : y;
|
|
|
|
terminal->column = y - 1;
|
|
break;
|
|
case 'f': /* HVP */
|
|
case 'H': /* CUP */
|
|
x = (set[1] ? args[1] : 1) - 1;
|
|
x = x < 0 ? 0 :
|
|
(x >= terminal->width ? terminal->width - 1 : x);
|
|
|
|
y = (set[0] ? args[0] : 1) - 1;
|
|
if (terminal->origin_mode) {
|
|
y += terminal->margin_top;
|
|
y = y < terminal->margin_top ? terminal->margin_top :
|
|
(y > terminal->margin_bottom ? terminal->margin_bottom : y);
|
|
} else {
|
|
y = y < 0 ? 0 :
|
|
(y >= terminal->height ? terminal->height - 1 : y);
|
|
}
|
|
|
|
terminal->row = y;
|
|
terminal->column = x;
|
|
break;
|
|
case 'I': /* CHT */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
while (count > 0 && terminal->column < terminal->width) {
|
|
if (terminal->tab_ruler[terminal->column]) count--;
|
|
terminal->column++;
|
|
}
|
|
terminal->column--;
|
|
break;
|
|
case 'J': /* ED */
|
|
row = terminal_get_row(terminal, terminal->row);
|
|
attr_row = terminal_get_attr_row(terminal, terminal->row);
|
|
if (!set[0] || args[0] == 0 || args[0] > 2) {
|
|
memset(&row[terminal->column],
|
|
0, (terminal->width - terminal->column) * sizeof(union utf8_char));
|
|
attr_init(&attr_row[terminal->column],
|
|
terminal->curr_attr, terminal->width - terminal->column);
|
|
for (i = terminal->row + 1; i < terminal->height; i++) {
|
|
memset(terminal_get_row(terminal, i),
|
|
0, terminal->data_pitch);
|
|
attr_init(terminal_get_attr_row(terminal, i),
|
|
terminal->curr_attr, terminal->width);
|
|
}
|
|
} else if (args[0] == 1) {
|
|
memset(row, 0, (terminal->column+1) * sizeof(union utf8_char));
|
|
attr_init(attr_row, terminal->curr_attr, terminal->column+1);
|
|
for (i = 0; i < terminal->row; i++) {
|
|
memset(terminal_get_row(terminal, i),
|
|
0, terminal->data_pitch);
|
|
attr_init(terminal_get_attr_row(terminal, i),
|
|
terminal->curr_attr, terminal->width);
|
|
}
|
|
} else if (args[0] == 2) {
|
|
for (i = 0; i < terminal->height; i++) {
|
|
memset(terminal_get_row(terminal, i),
|
|
0, terminal->data_pitch);
|
|
attr_init(terminal_get_attr_row(terminal, i),
|
|
terminal->curr_attr, terminal->width);
|
|
}
|
|
}
|
|
break;
|
|
case 'K': /* EL */
|
|
row = terminal_get_row(terminal, terminal->row);
|
|
attr_row = terminal_get_attr_row(terminal, terminal->row);
|
|
if (!set[0] || args[0] == 0 || args[0] > 2) {
|
|
memset(&row[terminal->column], 0,
|
|
(terminal->width - terminal->column) * sizeof(union utf8_char));
|
|
attr_init(&attr_row[terminal->column], terminal->curr_attr,
|
|
terminal->width - terminal->column);
|
|
} else if (args[0] == 1) {
|
|
memset(row, 0, (terminal->column+1) * sizeof(union utf8_char));
|
|
attr_init(attr_row, terminal->curr_attr, terminal->column+1);
|
|
} else if (args[0] == 2) {
|
|
memset(row, 0, terminal->data_pitch);
|
|
attr_init(attr_row, terminal->curr_attr, terminal->width);
|
|
}
|
|
break;
|
|
case 'L': /* IL */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if (terminal->row >= terminal->margin_top &&
|
|
terminal->row < terminal->margin_bottom)
|
|
{
|
|
top = terminal->margin_top;
|
|
terminal->margin_top = terminal->row;
|
|
terminal_scroll(terminal, 0 - count);
|
|
terminal->margin_top = top;
|
|
} else if (terminal->row == terminal->margin_bottom) {
|
|
memset(terminal_get_row(terminal, terminal->row),
|
|
0, terminal->data_pitch);
|
|
attr_init(terminal_get_attr_row(terminal, terminal->row),
|
|
terminal->curr_attr, terminal->width);
|
|
}
|
|
break;
|
|
case 'M': /* DL */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if (terminal->row >= terminal->margin_top &&
|
|
terminal->row < terminal->margin_bottom)
|
|
{
|
|
top = terminal->margin_top;
|
|
terminal->margin_top = terminal->row;
|
|
terminal_scroll(terminal, count);
|
|
terminal->margin_top = top;
|
|
} else if (terminal->row == terminal->margin_bottom) {
|
|
memset(terminal_get_row(terminal, terminal->row),
|
|
0, terminal->data_pitch);
|
|
}
|
|
break;
|
|
case 'P': /* DCH */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
terminal_shift_line(terminal, 0 - count);
|
|
break;
|
|
case 'S': /* SU */
|
|
terminal_scroll(terminal, set[0] ? args[0] : 1);
|
|
break;
|
|
case 'T': /* SD */
|
|
terminal_scroll(terminal, 0 - (set[0] ? args[0] : 1));
|
|
break;
|
|
case 'X': /* ECH */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if ((terminal->column + count) > terminal->width)
|
|
count = terminal->width - terminal->column;
|
|
row = terminal_get_row(terminal, terminal->row);
|
|
attr_row = terminal_get_attr_row(terminal, terminal->row);
|
|
memset(&row[terminal->column], 0, count * sizeof(union utf8_char));
|
|
attr_init(&attr_row[terminal->column], terminal->curr_attr, count);
|
|
break;
|
|
case 'Z': /* CBT */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
while (count > 0 && terminal->column >= 0) {
|
|
if (terminal->tab_ruler[terminal->column]) count--;
|
|
terminal->column--;
|
|
}
|
|
terminal->column++;
|
|
break;
|
|
case '`': /* HPA */
|
|
y = set[0] ? args[0] : 1;
|
|
y = y <= 0 ? 1 : y > terminal->width ? terminal->width : y;
|
|
|
|
terminal->column = y - 1;
|
|
break;
|
|
case 'b': /* REP */
|
|
count = set[0] ? args[0] : 1;
|
|
if (count == 0) count = 1;
|
|
if (terminal->last_char.byte[0])
|
|
for (i = 0; i < count; i++)
|
|
handle_char(terminal, terminal->last_char);
|
|
terminal->last_char.byte[0] = 0;
|
|
break;
|
|
case 'c': /* Primary DA */
|
|
write(terminal->master, "\e[?6c", 5);
|
|
sleep(1);
|
|
break;
|
|
case 'd': /* VPA */
|
|
x = set[0] ? args[0] : 1;
|
|
x = x <= 0 ? 1 : x > terminal->height ? terminal->height : x;
|
|
|
|
terminal->row = x - 1;
|
|
break;
|
|
case 'g': /* TBC */
|
|
if (!set[0] || args[0] == 0) {
|
|
terminal->tab_ruler[terminal->column] = 0;
|
|
} else if (args[0] == 3) {
|
|
memset(terminal->tab_ruler, 0, terminal->width);
|
|
}
|
|
break;
|
|
case 'h': /* SM */
|
|
for(i = 0; i < 10 && set[i]; i++) {
|
|
handle_term_parameter(terminal, args[i], 1);
|
|
}
|
|
break;
|
|
case 'l': /* RM */
|
|
for(i = 0; i < 10 && set[i]; i++) {
|
|
handle_term_parameter(terminal, args[i], 0);
|
|
}
|
|
break;
|
|
case 'm': /* SGR */
|
|
if (set[0] && set[1] && set[2] && args[1] == 5) {
|
|
if (args[0] == 38) {
|
|
handle_sgr(terminal, args[2] + 256);
|
|
break;
|
|
} else if (args[0] == 48) {
|
|
handle_sgr(terminal, args[2] + 512);
|
|
break;
|
|
}
|
|
}
|
|
for(i = 0; i < 10; i++) {
|
|
if(set[i]) {
|
|
handle_sgr(terminal, args[i]);
|
|
} else if(i == 0) {
|
|
handle_sgr(terminal, 0);
|
|
break;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 'n': /* DSR */
|
|
i = set[0] ? args[0] : 0;
|
|
if (i == 0 || i == 5) {
|
|
write(terminal->master, "\e[0n", 4);
|
|
} else if (i == 6) {
|
|
snprintf(response, MAX_RESPONSE, "\e[%d;%dR",
|
|
terminal->origin_mode ?
|
|
terminal->row+terminal->margin_top : terminal->row+1,
|
|
terminal->column+1);
|
|
write(terminal->master, response, strlen(response));
|
|
}
|
|
sleep(1); /* is this required? why? */
|
|
break;
|
|
case 'r':
|
|
if(!set[0]) {
|
|
terminal->margin_top = 0;
|
|
terminal->margin_bottom = terminal->height-1;
|
|
terminal->row = 0;
|
|
terminal->column = 0;
|
|
} else {
|
|
top = (set[0] ? args[0] : 1) - 1;
|
|
top = top < 0 ? 0 :
|
|
(top >= terminal->height ? terminal->height - 1 : top);
|
|
bottom = (set[1] ? args[1] : 1) - 1;
|
|
bottom = bottom < 0 ? 0 :
|
|
(bottom >= terminal->height ? terminal->height - 1 : bottom);
|
|
if(bottom > top) {
|
|
terminal->margin_top = top;
|
|
terminal->margin_bottom = bottom;
|
|
} else {
|
|
terminal->margin_top = 0;
|
|
terminal->margin_bottom = terminal->height-1;
|
|
}
|
|
if(terminal->origin_mode)
|
|
terminal->row = terminal->margin_top;
|
|
else
|
|
terminal->row = 0;
|
|
terminal->column = 0;
|
|
}
|
|
break;
|
|
case 's':
|
|
terminal->saved_row = terminal->row;
|
|
terminal->saved_column = terminal->column;
|
|
break;
|
|
case 'u':
|
|
terminal->row = terminal->saved_row;
|
|
terminal->column = terminal->saved_column;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown CSI escape: %c\n", *p);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_non_csi_escape(struct terminal *terminal, char code)
|
|
{
|
|
switch(code) {
|
|
case 'M': /* RI */
|
|
terminal->row -= 1;
|
|
if(terminal->row < terminal->margin_top) {
|
|
terminal->row = terminal->margin_top;
|
|
terminal_scroll(terminal, -1);
|
|
}
|
|
break;
|
|
case 'E': /* NEL */
|
|
terminal->column = 0;
|
|
// fallthrough
|
|
case 'D': /* IND */
|
|
terminal->row += 1;
|
|
if(terminal->row > terminal->margin_bottom) {
|
|
terminal->row = terminal->margin_bottom;
|
|
terminal_scroll(terminal, +1);
|
|
}
|
|
break;
|
|
case 'c': /* RIS */
|
|
terminal_init(terminal);
|
|
break;
|
|
case 'H': /* HTS */
|
|
terminal->tab_ruler[terminal->column] = 1;
|
|
break;
|
|
case '7': /* DECSC */
|
|
terminal->saved_row = terminal->row;
|
|
terminal->saved_column = terminal->column;
|
|
terminal->saved_attr = terminal->curr_attr;
|
|
terminal->saved_origin_mode = terminal->origin_mode;
|
|
break;
|
|
case '8': /* DECRC */
|
|
terminal->row = terminal->saved_row;
|
|
terminal->column = terminal->saved_column;
|
|
terminal->curr_attr = terminal->saved_attr;
|
|
terminal->origin_mode = terminal->saved_origin_mode;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown escape code: %c\n", code);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_special_escape(struct terminal *terminal, char special, char code)
|
|
{
|
|
int i, numChars;
|
|
|
|
if (special == '#') {
|
|
switch(code) {
|
|
case '8':
|
|
/* fill with 'E', no cheap way to do this */
|
|
memset(terminal->data, 0, terminal->data_pitch * terminal->height);
|
|
numChars = terminal->width * terminal->height;
|
|
for(i = 0; i < numChars; i++) {
|
|
terminal->data[i].byte[0] = 'E';
|
|
}
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown HASH escape #%c\n", code);
|
|
break;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "Unknown special escape %c%c\n", special, code);
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_sgr(struct terminal *terminal, int code)
|
|
{
|
|
switch(code) {
|
|
case 0:
|
|
terminal->curr_attr = terminal->color_scheme->default_attr;
|
|
break;
|
|
case 1:
|
|
terminal->curr_attr.a |= ATTRMASK_BOLD;
|
|
if (terminal->curr_attr.fg < 8)
|
|
terminal->curr_attr.fg += 8;
|
|
break;
|
|
case 4:
|
|
terminal->curr_attr.a |= ATTRMASK_UNDERLINE;
|
|
break;
|
|
case 5:
|
|
terminal->curr_attr.a |= ATTRMASK_BLINK;
|
|
break;
|
|
case 2:
|
|
case 21:
|
|
case 22:
|
|
terminal->curr_attr.a &= ~ATTRMASK_BOLD;
|
|
if (terminal->curr_attr.fg < 16 && terminal->curr_attr.fg >= 8)
|
|
terminal->curr_attr.fg -= 8;
|
|
break;
|
|
case 24:
|
|
terminal->curr_attr.a &= ~ATTRMASK_UNDERLINE;
|
|
break;
|
|
case 25:
|
|
terminal->curr_attr.a &= ~ATTRMASK_BLINK;
|
|
break;
|
|
case 7:
|
|
case 26:
|
|
terminal->curr_attr.a |= ATTRMASK_INVERSE;
|
|
break;
|
|
case 27:
|
|
terminal->curr_attr.a &= ~ATTRMASK_INVERSE;
|
|
break;
|
|
case 39:
|
|
terminal->curr_attr.fg = terminal->color_scheme->default_attr.fg;
|
|
break;
|
|
case 49:
|
|
terminal->curr_attr.bg = terminal->color_scheme->default_attr.bg;
|
|
break;
|
|
default:
|
|
if(code >= 30 && code <= 37) {
|
|
terminal->curr_attr.fg = code - 30;
|
|
if (terminal->curr_attr.a & ATTRMASK_BOLD)
|
|
terminal->curr_attr.fg += 8;
|
|
} else if(code >= 40 && code <= 47) {
|
|
terminal->curr_attr.bg = code - 40;
|
|
} else if(code >= 256 && code < 512) {
|
|
terminal->curr_attr.fg = code - 256;
|
|
} else if(code >= 512 && code < 768) {
|
|
terminal->curr_attr.bg = code - 512;
|
|
} else {
|
|
fprintf(stderr, "Unknown SGR code: %d\n", code);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Returns 1 if c was special, otherwise 0 */
|
|
static int
|
|
handle_special_char(struct terminal *terminal, char c)
|
|
{
|
|
union utf8_char *row;
|
|
struct attr *attr_row;
|
|
|
|
row = terminal_get_row(terminal, terminal->row);
|
|
attr_row = terminal_get_attr_row(terminal, terminal->row);
|
|
|
|
switch(c) {
|
|
case '\r':
|
|
terminal->column = 0;
|
|
break;
|
|
case '\n':
|
|
if (terminal->mode & MODE_LF_NEWLINE) {
|
|
terminal->column = 0;
|
|
}
|
|
/* fallthrough */
|
|
case '\v':
|
|
case '\f':
|
|
terminal->row++;
|
|
if(terminal->row > terminal->margin_bottom) {
|
|
terminal->row = terminal->margin_bottom;
|
|
terminal_scroll(terminal, +1);
|
|
}
|
|
|
|
break;
|
|
case '\t':
|
|
while (terminal->column < terminal->width) {
|
|
if (terminal->tab_ruler[terminal->column]) break;
|
|
if (terminal->mode & MODE_IRM)
|
|
terminal_shift_line(terminal, +1);
|
|
row[terminal->column].byte[0] = ' ';
|
|
row[terminal->column].byte[1] = '\0';
|
|
attr_row[terminal->column] = terminal->curr_attr;
|
|
terminal->column++;
|
|
}
|
|
if (terminal->column >= terminal->width) {
|
|
terminal->column = terminal->width - 1;
|
|
}
|
|
|
|
break;
|
|
case '\b':
|
|
if (terminal->column >= terminal->width) {
|
|
terminal->column = terminal->width - 2;
|
|
} else if (terminal->column > 0) {
|
|
terminal->column--;
|
|
} else if (terminal->mode & MODE_AUTOWRAP) {
|
|
terminal->column = terminal->width - 1;
|
|
terminal->row -= 1;
|
|
if (terminal->row < terminal->margin_top) {
|
|
terminal->row = terminal->margin_top;
|
|
terminal_scroll(terminal, -1);
|
|
}
|
|
}
|
|
|
|
break;
|
|
case '\a':
|
|
/* Bell */
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
handle_char(struct terminal *terminal, union utf8_char utf8)
|
|
{
|
|
union utf8_char *row;
|
|
struct attr *attr_row;
|
|
|
|
if (handle_special_char(terminal, utf8.byte[0])) return;
|
|
|
|
/* There are a whole lot of non-characters, control codes,
|
|
* and formatting codes that should probably be ignored,
|
|
* for example: */
|
|
if (strncmp((char*) utf8.byte, "\xEF\xBB\xBF", 3) == 0) {
|
|
/* BOM, ignore */
|
|
return;
|
|
}
|
|
|
|
/* Some of these non-characters should be translated, e.g.: */
|
|
if (utf8.byte[0] < 32) {
|
|
utf8.byte[0] = utf8.byte[0] + 64;
|
|
}
|
|
|
|
/* handle right margin effects */
|
|
if (terminal->column >= terminal->width) {
|
|
if (terminal->mode & MODE_AUTOWRAP) {
|
|
terminal->column = 0;
|
|
terminal->row += 1;
|
|
if (terminal->row > terminal->margin_bottom) {
|
|
terminal->row = terminal->margin_bottom;
|
|
terminal_scroll(terminal, +1);
|
|
}
|
|
} else {
|
|
terminal->column--;
|
|
}
|
|
}
|
|
|
|
row = terminal_get_row(terminal, terminal->row);
|
|
attr_row = terminal_get_attr_row(terminal, terminal->row);
|
|
|
|
if (terminal->mode & MODE_IRM)
|
|
terminal_shift_line(terminal, +1);
|
|
row[terminal->column] = utf8;
|
|
attr_row[terminal->column++] = terminal->curr_attr;
|
|
|
|
if (utf8.ch != terminal->last_char.ch)
|
|
terminal->last_char = utf8;
|
|
}
|
|
|
|
static void
|
|
terminal_data(struct terminal *terminal, const char *data, size_t length)
|
|
{
|
|
int i;
|
|
union utf8_char utf8;
|
|
enum utf8_state parser_state;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
parser_state =
|
|
utf8_next_char(&terminal->state_machine, data[i]);
|
|
switch(parser_state) {
|
|
case utf8state_accept:
|
|
utf8.ch = terminal->state_machine.s.ch;
|
|
break;
|
|
case utf8state_reject:
|
|
/* the unicode replacement character */
|
|
utf8.byte[0] = 0xEF;
|
|
utf8.byte[1] = 0xBF;
|
|
utf8.byte[2] = 0xBD;
|
|
utf8.byte[3] = 0x00;
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
/* assume escape codes never use non-ASCII characters */
|
|
if (terminal->state == STATE_ESCAPE) {
|
|
terminal->escape[terminal->escape_length++] = utf8.byte[0];
|
|
if (utf8.byte[0] == '[') {
|
|
terminal->state = STATE_ESCAPE_CSI;
|
|
continue;
|
|
} else if (utf8.byte[0] == '#' || utf8.byte[0] == '(' ||
|
|
utf8.byte[0] == ')')
|
|
{
|
|
terminal->state = STATE_ESCAPE_SPECIAL;
|
|
continue;
|
|
} else {
|
|
terminal->state = STATE_NORMAL;
|
|
handle_non_csi_escape(terminal, utf8.byte[0]);
|
|
continue;
|
|
}
|
|
} else if (terminal->state == STATE_ESCAPE_SPECIAL) {
|
|
terminal->escape[terminal->escape_length++] = utf8.byte[0];
|
|
terminal->state = STATE_NORMAL;
|
|
if (isdigit(utf8.byte[0]) || isalpha(utf8.byte[0])) {
|
|
handle_special_escape(terminal, terminal->escape[1],
|
|
utf8.byte[0]);
|
|
continue;
|
|
}
|
|
} else if (terminal->state == STATE_ESCAPE_CSI) {
|
|
if (handle_special_char(terminal, utf8.byte[0]) != 0) {
|
|
/* do nothing */
|
|
} else if (utf8.byte[0] == '?') {
|
|
terminal->qmark_flag = 1;
|
|
} else {
|
|
/* Don't overflow the buffer */
|
|
if (terminal->escape_length < MAX_ESCAPE)
|
|
terminal->escape[terminal->escape_length++] = utf8.byte[0];
|
|
if (terminal->escape_length >= MAX_ESCAPE)
|
|
terminal->state = STATE_NORMAL;
|
|
}
|
|
|
|
if (isalpha(utf8.byte[0]) || utf8.byte[0] == '@' ||
|
|
utf8.byte[0] == '`')
|
|
{
|
|
terminal->state = STATE_NORMAL;
|
|
handle_escape(terminal);
|
|
continue;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* this is valid, because ASCII characters are never used to
|
|
* introduce a multibyte sequence in UTF-8 */
|
|
if (utf8.byte[0] == '\e') {
|
|
terminal->state = STATE_ESCAPE;
|
|
terminal->escape[0] = '\e';
|
|
terminal->escape_length = 1;
|
|
terminal->qmark_flag = 0;
|
|
} else {
|
|
handle_char(terminal, utf8);
|
|
} /* if */
|
|
} /* for */
|
|
|
|
window_schedule_redraw(terminal->window);
|
|
}
|
|
|
|
static void
|
|
key_handler(struct window *window, uint32_t key, uint32_t sym,
|
|
uint32_t state, uint32_t modifiers, void *data)
|
|
{
|
|
struct terminal *terminal = data;
|
|
char ch[MAX_RESPONSE];
|
|
int len = 0;
|
|
|
|
switch (sym) {
|
|
case XK_F11:
|
|
if (!state)
|
|
break;
|
|
terminal->fullscreen ^= 1;
|
|
window_set_fullscreen(window, terminal->fullscreen);
|
|
window_schedule_redraw(terminal->window);
|
|
break;
|
|
|
|
case XK_Delete:
|
|
sym = 0x04;
|
|
case XK_BackSpace:
|
|
case XK_Tab:
|
|
case XK_Linefeed:
|
|
case XK_Clear:
|
|
case XK_Pause:
|
|
case XK_Scroll_Lock:
|
|
case XK_Sys_Req:
|
|
case XK_Escape:
|
|
ch[len++] = sym & 0x7f;
|
|
break;
|
|
|
|
case XK_Return:
|
|
if (terminal->mode & MODE_LF_NEWLINE) {
|
|
ch[len++] = 0x0D;
|
|
ch[len++] = 0x0A;
|
|
} else {
|
|
ch[len++] = 0x0D;
|
|
}
|
|
break;
|
|
|
|
case XK_Shift_L:
|
|
case XK_Shift_R:
|
|
case XK_Control_L:
|
|
case XK_Control_R:
|
|
case XK_Alt_L:
|
|
case XK_Alt_R:
|
|
break;
|
|
|
|
default:
|
|
if (modifiers & WINDOW_MODIFIER_CONTROL)
|
|
sym = sym & 0x1f;
|
|
else if (modifiers & WINDOW_MODIFIER_ALT)
|
|
ch[len++] = 0x1b;
|
|
if (sym < 256)
|
|
ch[len++] = sym;
|
|
break;
|
|
}
|
|
|
|
if (state && len > 0)
|
|
write(terminal->master, ch, len);
|
|
}
|
|
|
|
static void
|
|
keyboard_focus_handler(struct window *window,
|
|
struct input *device, void *data)
|
|
{
|
|
struct terminal *terminal = data;
|
|
|
|
terminal->focused = (device != NULL);
|
|
window_schedule_redraw(terminal->window);
|
|
}
|
|
|
|
static struct terminal *
|
|
terminal_create(struct display *display, int fullscreen)
|
|
{
|
|
struct terminal *terminal;
|
|
cairo_surface_t *surface;
|
|
cairo_t *cr;
|
|
|
|
terminal = malloc(sizeof *terminal);
|
|
if (terminal == NULL)
|
|
return terminal;
|
|
|
|
memset(terminal, 0, sizeof *terminal);
|
|
terminal->fullscreen = fullscreen;
|
|
terminal->color_scheme = &DEFAULT_COLORS;
|
|
terminal_init(terminal);
|
|
terminal->margin_top = 0;
|
|
terminal->margin_bottom = 10000; /* much too large, will be trimmed down
|
|
* by terminal_resize */
|
|
terminal->window = window_create(display, "Wayland Terminal",
|
|
500, 400);
|
|
|
|
init_state_machine(&terminal->state_machine);
|
|
init_color_table(terminal);
|
|
|
|
terminal->display = display;
|
|
terminal->margin = 5;
|
|
|
|
window_set_fullscreen(terminal->window, terminal->fullscreen);
|
|
window_set_user_data(terminal->window, terminal);
|
|
window_set_redraw_handler(terminal->window, redraw_handler);
|
|
|
|
window_set_key_handler(terminal->window, key_handler);
|
|
window_set_keyboard_focus_handler(terminal->window,
|
|
keyboard_focus_handler);
|
|
|
|
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 0, 0);
|
|
cr = cairo_create(surface);
|
|
terminal->font_bold = cairo_toy_font_face_create ("mono",
|
|
CAIRO_FONT_SLANT_NORMAL,
|
|
CAIRO_FONT_WEIGHT_BOLD);
|
|
cairo_font_face_reference(terminal->font_bold);
|
|
terminal->font_normal = cairo_toy_font_face_create ("mono",
|
|
CAIRO_FONT_SLANT_NORMAL,
|
|
CAIRO_FONT_WEIGHT_NORMAL);
|
|
cairo_font_face_reference(terminal->font_normal);
|
|
cairo_set_font_face(cr, terminal->font_normal);
|
|
cairo_set_font_size(cr, 14);
|
|
cairo_font_extents(cr, &terminal->extents);
|
|
cairo_destroy(cr);
|
|
cairo_surface_destroy(surface);
|
|
|
|
terminal_resize(terminal, 80, 24);
|
|
terminal_draw(terminal);
|
|
|
|
return terminal;
|
|
}
|
|
|
|
static gboolean
|
|
io_handler(GIOChannel *source,
|
|
GIOCondition condition,
|
|
gpointer data)
|
|
{
|
|
struct terminal *terminal = data;
|
|
gchar buffer[256];
|
|
gsize bytes_read;
|
|
GError *error = NULL;
|
|
|
|
g_io_channel_read_chars(source, buffer, sizeof buffer,
|
|
&bytes_read, &error);
|
|
|
|
terminal_data(terminal, buffer, bytes_read);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
terminal_run(struct terminal *terminal, const char *path)
|
|
{
|
|
int master;
|
|
pid_t pid;
|
|
|
|
pid = forkpty(&master, NULL, NULL, NULL);
|
|
if (pid == 0) {
|
|
setenv("TERM", "vt102", 1);
|
|
if (execl(path, path, NULL)) {
|
|
printf("exec failed: %m\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
} else if (pid < 0) {
|
|
fprintf(stderr, "failed to fork and create pty (%m).\n");
|
|
return -1;
|
|
}
|
|
|
|
terminal->master = master;
|
|
terminal->channel = g_io_channel_unix_new(master);
|
|
fcntl(master, F_SETFL, O_NONBLOCK);
|
|
g_io_add_watch(terminal->channel, G_IO_IN,
|
|
io_handler, terminal);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const GOptionEntry option_entries[] = {
|
|
{ "fullscreen", 'f', 0, G_OPTION_ARG_NONE,
|
|
&option_fullscreen, "Run in fullscreen mode" },
|
|
{ NULL }
|
|
};
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct display *d;
|
|
struct terminal *terminal;
|
|
|
|
d = display_create(&argc, &argv, option_entries);
|
|
if (d == NULL) {
|
|
fprintf(stderr, "failed to create display: %m\n");
|
|
return -1;
|
|
}
|
|
|
|
terminal = terminal_create(d, option_fullscreen);
|
|
if (terminal_run(terminal, "/bin/bash"))
|
|
exit(EXIT_FAILURE);
|
|
|
|
display_run(d);
|
|
|
|
return 0;
|
|
}
|