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/*
A small utility to print the resulting key codes from pressing a
key. Servers the same function as hitting ^V in bash, but I prefer
the way key_reader works.
Type ^C to exit the program.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <termcap.h>
static int readch()
{
char arr[1];
if( read( 0, arr, 1 ) < 0 )
{
perror( "read" );
return readch();
}
else
return arr[0];
}
int writestr( char *str )
{
write( 1, str, strlen(str) );
return 0;
}
int main( int argc, char **argv)
{
if( argc == 2 )
{
static char term_buffer[2048];
char *termtype = getenv ("TERM");
char *tbuff = malloc( sizeof(char)*9999);
char *res;
tgetent( term_buffer, termtype );
res = tgetstr( argv[1], &tbuff );
if( res != 0 )
{
while( *res != 0 )
{
printf("%d ", *res );
res++;
}
printf( "\n" );
}
else
{
printf("Undefined sequence\n");
}
}
else
{
char scratch[1024];
unsigned int c;
struct termios modes, /* so we can change the modes */
savemodes; /* so we can reset the modes when we're done */
tcgetattr(0,&modes); /* get the current terminal modes */
savemodes = modes; /* save a copy so we can reset them */
modes.c_lflag &= ~ICANON; /* turn off canonical mode */
modes.c_lflag &= ~ECHO; /* turn off echo mode */
modes.c_cc[VMIN]=1;
modes.c_cc[VTIME]=0;
tcsetattr(0,TCSANOW,&modes); /* set the new modes */
while(1)
{
if( (c=readch()) == EOF )
break;
if((c > 31) && (c != 127) )
sprintf( scratch, "dec: %d hex: %x char: %c\n", c, c, c );
else
sprintf( scratch, "dec: %d hex: %x\n", c, c );
writestr( scratch );
}
/* reset the terminal to the saved mode */
tcsetattr(0,TCSANOW,&savemodes);
}
return 0;
}
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