mirror of
https://github.com/mpv-player/mpv
synced 2024-12-29 10:32:15 +00:00
318559056f
getch2.c read data into a "char" array, and returned values other than
escape sequences directly from there. This meant that it could return
negative values (except on platforms where "char" is unsigned) if the
input contained bytes >= 128. This would break later parsing in
input.c as the values would be interpreted as having the MP_KEY_DOWN
flag set, which would make the key binding code think a key is held
down (and never released). Fix by changing the buffer type to unsigned
char.
The bug itself was very old, but started triggering visible breakage
more easily after commit 82b8f89bae ("input: rework event reading and
command queuing"). Before that the key values would be passed through
the input.c "key read function" interface, which (mis)interpreted the
negative values as errors from the function, and in most cases
discarded them without much visible effect.
308 lines
9.0 KiB
C
308 lines
9.0 KiB
C
/*
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* GyS-TermIO v2.0 (for GySmail v3)
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* a very small replacement of ncurses library
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*
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* copyright (C) 1999 A'rpi/ESP-team
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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//#define HAVE_TERMCAP
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#if !defined(__OS2__) && !defined(__MORPHOS__)
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#define CONFIG_IOCTL
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#endif
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#define MAX_KEYS 64
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#define BUF_LEN 256
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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 <sys/time.h>
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#include <sys/types.h>
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#ifdef CONFIG_IOCTL
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_TERMIOS
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#ifdef HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#ifdef HAVE_SYS_TERMIOS_H
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#include <sys/termios.h>
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#endif
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#endif
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#if defined(HAVE_LANGINFO) && defined(CONFIG_ICONV)
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#include <locale.h>
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#include <langinfo.h>
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#endif
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#include <unistd.h>
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#include <fcntl.h>
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#include "mp_fifo.h"
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#include "input/keycodes.h"
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#include "getch2.h"
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#ifdef HAVE_TERMIOS
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static struct termios tio_orig;
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#endif
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static int getch2_len=0;
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static unsigned char getch2_buf[BUF_LEN];
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int screen_width=80;
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int screen_height=24;
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char * erase_to_end_of_line = NULL;
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typedef struct {
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int len;
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int code;
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char chars[8];
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} keycode_st;
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static keycode_st getch2_keys[MAX_KEYS];
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static int getch2_key_db=0;
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#ifdef HAVE_TERMCAP
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#if 0
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#include <termcap.h>
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#else
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int tgetent(char *BUFFER, char *TERMTYPE);
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int tgetnum(char *NAME);
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int tgetflag(char *NAME);
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char *tgetstr(char *NAME, char **AREA);
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#endif
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static char term_buffer[4096];
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static char term_buffer2[4096];
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static char *term_p=term_buffer2;
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static void termcap_add(char *id,int code){
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char *p=tgetstr(id,&term_p);
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if(!p) return;
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if(getch2_key_db>=MAX_KEYS) return;
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getch2_keys[getch2_key_db].len=strlen(p);
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strncpy(getch2_keys[getch2_key_db].chars,p,8);
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getch2_keys[getch2_key_db].code=code;
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++getch2_key_db;
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/* printf("%s=%s\n",id,p); */
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}
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static int success=0;
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int load_termcap(char *termtype){
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if(!termtype) termtype=getenv("TERM");
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if(!termtype) termtype="unknown";
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success=tgetent(term_buffer, termtype);
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if(success<0){ printf("Could not access the 'termcap' data base.\n"); return 0; }
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if(success==0){ printf("Terminal type `%s' is not defined.\n", termtype);return 0;}
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screen_width=tgetnum("co");
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screen_height=tgetnum("li");
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if(screen_width<1 || screen_width>255) screen_width=80;
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if(screen_height<1 || screen_height>255) screen_height=24;
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erase_to_end_of_line= tgetstr("ce",&term_p);
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termcap_add("kP",KEY_PGUP);
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termcap_add("kN",KEY_PGDWN);
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termcap_add("kh",KEY_HOME);
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termcap_add("kH",KEY_END);
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termcap_add("kI",KEY_INS);
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termcap_add("kD",KEY_DEL);
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termcap_add("kb",KEY_BS);
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termcap_add("kl",KEY_LEFT);
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termcap_add("kd",KEY_DOWN);
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termcap_add("ku",KEY_UP);
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termcap_add("kr",KEY_RIGHT);
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termcap_add("k0",KEY_F+0);
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termcap_add("k1",KEY_F+1);
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termcap_add("k2",KEY_F+2);
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termcap_add("k3",KEY_F+3);
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termcap_add("k4",KEY_F+4);
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termcap_add("k5",KEY_F+5);
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termcap_add("k6",KEY_F+6);
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termcap_add("k7",KEY_F+7);
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termcap_add("k8",KEY_F+8);
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termcap_add("k9",KEY_F+9);
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termcap_add("k;",KEY_F+10);
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return getch2_key_db;
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}
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#endif
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void get_screen_size(void){
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#ifdef CONFIG_IOCTL
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struct winsize ws;
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if (ioctl(0, TIOCGWINSZ, &ws) < 0 || !ws.ws_row || !ws.ws_col) return;
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/* printf("Using IOCTL\n"); */
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screen_width=ws.ws_col;
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screen_height=ws.ws_row;
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#endif
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}
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void getch2(struct mp_fifo *fifo)
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{
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int retval = read(0, &getch2_buf[getch2_len], BUF_LEN-getch2_len);
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if (retval < 1)
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return;
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getch2_len += retval;
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while (getch2_len > 0 && (getch2_len > 1 || getch2_buf[0] != 27)) {
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int i, len, code;
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/* First find in the TERMCAP database: */
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for (i = 0; i < getch2_key_db; i++) {
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if ((len = getch2_keys[i].len) <= getch2_len)
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if(memcmp(getch2_keys[i].chars, getch2_buf, len) == 0) {
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code = getch2_keys[i].code;
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goto found;
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}
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}
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/* We always match some keypress here, with length 1 if nothing else.
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* Since some of the cases explicitly test remaining buffer length
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* having a keycode only partially read in the buffer could incorrectly
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* use the first byte as an independent character.
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* However the buffer is big enough that this shouldn't happen too
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* easily, and it's been this way for years without many complaints.
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* I see no simple fix as there's no easy test which would tell
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* whether a string must be part of a longer keycode. */
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len = 1;
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code = getch2_buf[0];
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/* Check the well-known codes... */
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if (code != 27) {
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if (code == 'A'-64) code = KEY_HOME;
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else if (code == 'E'-64) code = KEY_END;
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else if (code == 'D'-64) code = KEY_DEL;
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else if (code == 'H'-64) code = KEY_BS;
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else if (code == 'U'-64) code = KEY_PGUP;
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else if (code == 'V'-64) code = KEY_PGDWN;
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else if (code == 8 || code==127) code = KEY_BS;
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else if (code == 10 || code==13) {
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if (getch2_len > 1) {
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int c = getch2_buf[1];
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if ((c == 10 || c == 13) && (c != code))
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len = 2;
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}
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code = KEY_ENTER;
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}
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}
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else if (getch2_len > 1) {
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int c = getch2_buf[1];
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if (c == 27) {
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code = KEY_ESC;
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len = 2;
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goto found;
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}
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if (c >= '0' && c <= '9') {
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code = c-'0'+KEY_F;
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len = 2;
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goto found;
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}
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if (getch2_len >= 4 && c == '[' && getch2_buf[2] == '[') {
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int c = getch2_buf[3];
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if (c >= 'A' && c < 'A'+12) {
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code = KEY_F+1 + c-'A';
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len = 4;
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goto found;
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}
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}
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if ((c == '[' || c == 'O') && getch2_len >= 3) {
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int c = getch2_buf[2];
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const short ctable[] = {
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KEY_UP, KEY_DOWN, KEY_RIGHT, KEY_LEFT, 0,
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KEY_END, KEY_PGDWN, KEY_HOME, KEY_PGUP, 0, 0, KEY_INS, 0, 0, 0,
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KEY_F+1, KEY_F+2, KEY_F+3, KEY_F+4};
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if (c >= 'A' && c <= 'S')
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if (ctable[c - 'A']) {
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code = ctable[c - 'A'];
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len = 3;
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goto found;
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}
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}
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if (getch2_len >= 4 && c == '[' && getch2_buf[3] == '~') {
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int c = getch2_buf[2];
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const int ctable[8] = {KEY_HOME, KEY_INS, KEY_DEL, KEY_END, KEY_PGUP, KEY_PGDWN, KEY_HOME, KEY_END};
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if (c >= '1' && c <= '8') {
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code = ctable[c - '1'];
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len = 4;
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goto found;
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}
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}
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if (getch2_len >= 5 && c == '[' && getch2_buf[4] == '~') {
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int i = getch2_buf[2] - '0';
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int j = getch2_buf[3] - '0';
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if (i >= 0 && i <= 9 && j >= 0 && j <= 9) {
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const short ftable[20] = {
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11,12,13,14,15, 17,18,19,20,21,
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23,24,25,26,28, 29,31,32,33,34 };
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int a = i*10 + j;
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for (i = 0; i < 20; i++)
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if (ftable[i] == a) {
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code = KEY_F+1 + i;
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len = 5;
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goto found;
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}
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}
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}
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}
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found:
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getch2_len -= len;
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for (i = 0; i < getch2_len; i++)
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getch2_buf[i] = getch2_buf[len+i];
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mplayer_put_key(fifo, code);
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}
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}
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static int getch2_status=0;
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void getch2_enable(void){
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#ifdef HAVE_TERMIOS
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struct termios tio_new;
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tcgetattr(0,&tio_orig);
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tio_new=tio_orig;
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tio_new.c_lflag &= ~(ICANON|ECHO); /* Clear ICANON and ECHO. */
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tio_new.c_cc[VMIN] = 0;
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tio_new.c_cc[VTIME] = 0;
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tcsetattr(0,TCSANOW,&tio_new);
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#endif
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getch2_status=1;
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}
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void getch2_disable(void){
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if(!getch2_status) return; // already disabled / never enabled
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#ifdef HAVE_TERMIOS
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tcsetattr(0,TCSANOW,&tio_orig);
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#endif
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getch2_status=0;
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}
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#ifdef CONFIG_ICONV
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char* get_term_charset(void)
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{
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char* charset = NULL;
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#ifdef HAVE_LANGINFO
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setlocale(LC_CTYPE, "");
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charset = strdup(nl_langinfo(CODESET));
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setlocale(LC_CTYPE, "C");
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#endif
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return charset;
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}
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#endif
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