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-rw-r--r--linux/getch2.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/linux/getch2.c b/linux/getch2.c
new file mode 100644
index 0000000000..628d225170
--- /dev/null
+++ b/linux/getch2.c
@@ -0,0 +1,215 @@
+/* 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;
+ ioctl(0,TCGETS,&tio_orig); /* tcgetattr(0,&tio_orig); */
+ 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;
+ ioctl(0,TCSETS,&tio_new); /* tcsetattr(0,TCSANOW,&tio_new); */
+}
+
+void getch2_disable(){
+ ioctl(0,TCSETS,&tio_orig); /* tcsetattr(0,TCSANOW,&tio_orig); */
+}
+