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mpv/linux/getch2.c

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C
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/* GyS-TermIO v2.0 (for GySmail v3) (C) 1999 A'rpi/ESP-team */
#include "../config.h"
//#define USE_TERMCAP
#define USE_IOCTL
#define MAX_KEYS 64
#define BUF_LEN 256
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#ifdef USE_IOCTL
#include <sys/ioctl.h>
#endif
#include <sys/termios.h>
#include <unistd.h>
#include "keycodes.h"
static struct termios tio_orig;
static int getch2_len=0;
static char getch2_buf[BUF_LEN];
int screen_width=80;
int screen_height=24;
typedef struct {
int len;
int code;
char chars[8];
} keycode_st;
static keycode_st getch2_keys[MAX_KEYS];
static int getch2_key_db=0;
#ifdef USE_TERMCAP
#if 0
#include <termcap.h>
#else
extern int tgetent (char *BUFFER, char *TERMTYPE);
extern int tgetnum (char *NAME);
extern int tgetflag (char *NAME);
extern char *tgetstr (char *NAME, char **AREA);
#endif
static char term_buffer[4096];
static char term_buffer2[4096];
static char *term_p=term_buffer2;
static void termcap_add(char *id,int code){
char *p=tgetstr(id,&term_p);
if(!p) return;
if(getch2_key_db>=MAX_KEYS) return;
getch2_keys[getch2_key_db].len=strlen(p);
strncpy(getch2_keys[getch2_key_db].chars,p,8);
getch2_keys[getch2_key_db].code=code;
++getch2_key_db;
/* printf("%s=%s\n",id,p); */
}
static int success=0;
int load_termcap(char *termtype){
if(!termtype) termtype=getenv("TERM");
success=tgetent(term_buffer, termtype);
if(success<0){ printf("Could not access the 'termcap' data base.\n"); return 0; }
if(success==0){ printf("Terminal type `%s' is not defined.\n", termtype);return 0;}
screen_width=tgetnum("co");
screen_height=tgetnum("li");
if(screen_width<1 || screen_width>255) screen_width=80;
if(screen_height<1 || screen_height>255) screen_height=24;
termcap_add("kP",KEY_PGUP);
termcap_add("kN",KEY_PGDWN);
termcap_add("kh",KEY_HOME);
termcap_add("kH",KEY_END);
termcap_add("kI",KEY_INS);
termcap_add("kD",KEY_DEL);
termcap_add("kb",KEY_BS);
termcap_add("kl",KEY_LEFT);
termcap_add("kd",KEY_DOWN);
termcap_add("ku",KEY_UP);
termcap_add("kr",KEY_RIGHT);
termcap_add("k0",KEY_F+0);
termcap_add("k1",KEY_F+1);
termcap_add("k2",KEY_F+2);
termcap_add("k3",KEY_F+3);
termcap_add("k4",KEY_F+4);
termcap_add("k5",KEY_F+5);
termcap_add("k6",KEY_F+6);
termcap_add("k7",KEY_F+7);
termcap_add("k8",KEY_F+8);
termcap_add("k9",KEY_F+9);
termcap_add("k;",KEY_F+10);
return getch2_key_db;
}
#endif
void get_screen_size(){
#ifdef USE_IOCTL
struct winsize ws;
if (ioctl(0, TIOCGWINSZ, &ws) < 0 || !ws.ws_row || !ws.ws_col) return;
/* printf("Using IOCTL\n"); */
screen_width=ws.ws_col;
screen_height=ws.ws_row;
#endif
}
int getch2(int time){
int len=0;
int code=0;
int i=0;
while(!getch2_len || (getch2_len==1 && getch2_buf[0]==27)){
fd_set rfds;
struct timeval tv;
int retval;
/* Watch stdin (fd 0) to see when it has input. */
FD_ZERO(&rfds); FD_SET(0,&rfds);
/* Wait up to 'time' microseconds. */
tv.tv_sec=time/1000; tv.tv_usec = (time%1000)*1000;
retval=select(1, &rfds, NULL, NULL, &tv);
if(!retval) return -1;
/* Data is available now. */
retval=read(0,&getch2_buf[getch2_len],BUF_LEN-getch2_len);
if(retval<1) return -1;
getch2_len+=retval;
}
/* First find in the TERMCAP database: */
for(i=0;i<getch2_key_db;i++){
if((len=getch2_keys[i].len)<=getch2_len)
if(memcmp(getch2_keys[i].chars,getch2_buf,len)==0){
code=getch2_keys[i].code; goto found;
}
}
len=1;code=getch2_buf[0];
/* Check the well-known codes... */
if(code!=27){
if(code=='A'-64){ code=KEY_HOME; goto found;}
if(code=='E'-64){ code=KEY_END; goto found;}
if(code=='D'-64){ code=KEY_DEL; goto found;}
if(code=='H'-64){ code=KEY_BS; goto found;}
if(code=='U'-64){ code=KEY_PGUP; goto found;}
if(code=='V'-64){ code=KEY_PGDWN; goto found;}
if(code==8 || code==127){ code=KEY_BS; goto found;}
if(code==10 || code==13){
if(getch2_len>1){
int c=getch2_buf[1];
if(c==10 || c==13) if(c!=code) len=2;
}
code=KEY_ENTER;
goto found;
}
} else if(getch2_len>1){
int c=getch2_buf[1];
if(c==27){ code=KEY_ESC; len=2; goto found;}
if(c>='0' && c<='9'){ code=c-'0'+KEY_F; len=2; goto found;}
if(getch2_len>=4 && c=='[' && getch2_buf[2]=='['){
int c=getch2_buf[3];
if(c>='A' && c<'A'+12){ code=KEY_F+1+c-'A';len=4;goto found;}
}
if(c=='[' || c=='O') if(getch2_len>=3){
int c=getch2_buf[2];
static short int ctable[]={ KEY_UP,KEY_DOWN,KEY_RIGHT,KEY_LEFT,0,
KEY_END,KEY_PGDWN,KEY_HOME,KEY_PGUP,0,0,KEY_INS,0,0,0,
KEY_F+1,KEY_F+2,KEY_F+3,KEY_F+4};
if(c>='A' && c<='S')
if(ctable[c-'A']){ code=ctable[c-'A']; len=3; goto found;}
}
if(getch2_len>=4 && c=='[' && getch2_buf[3]=='~'){
int c=getch2_buf[2];
int ctable[8]={KEY_HOME,KEY_INS,KEY_DEL,KEY_END,KEY_PGUP,KEY_PGDWN,KEY_HOME,KEY_END};
if(c>='1' && c<='8'){ code=ctable[c-'1']; len=4; goto found;}
}
if(getch2_len>=5 && c=='[' && getch2_buf[4]=='~'){
int i=getch2_buf[2]-'0';
int j=getch2_buf[3]-'0';
if(i>=0 && i<=9 && j>=0 && j<=9){
static short int ftable[20]={
11,12,13,14,15, 17,18,19,20,21,
23,24,25,26,28, 29,31,32,33,34 };
int a=i*10+j;
for(i=0;i<20;i++) if(ftable[i]==a){ code=KEY_F+1+i;len=5;goto found;}
}
}
}
found:
if((getch2_len-=len)>0){
int i;
for(i=0;i<getch2_len;i++) getch2_buf[i]=getch2_buf[len+i];
}
return code;
}
void getch2_enable(){
struct termios tio_new;
#if defined(__NetBSD__) || defined(__svr4__) || defined(__CYGWIN__)
tcgetattr(0,&tio_orig);
#elif defined(__FreeBSD__) || defined(__OpenBSD__)
ioctl(0,TIOCGETA,&tio_orig);
#else
ioctl(0,TCGETS,&tio_orig);
#endif
tio_new=tio_orig;
tio_new.c_lflag &= ~(ICANON|ECHO); /* Clear ICANON and ECHO. */
tio_new.c_cc[VMIN] = 1;
tio_new.c_cc[VTIME] = 0;
#if defined(__NetBSD__) || defined(__svr4__) || defined(__CYGWIN__)
tcsetattr(0,TCSANOW,&tio_new);
#elif defined(__FreeBSD__) || defined(__OpenBSD__)
ioctl(0,TIOCSETA,&tio_new);
#else
ioctl(0,TCSETS,&tio_new);
#endif
}
void getch2_disable(){
#if defined(__NetBSD__) || defined(__svr4__) || defined(__CYGWIN__)
tcsetattr(0,TCSANOW,&tio_orig);
#elif defined(__FreeBSD__) || defined(__OpenBSD__)
ioctl(0,TIOCSETA,&tio_orig);
#else
ioctl(0,TCSETS,&tio_orig);
#endif
}
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