fish-shell/key_reader.c

/*
    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 <locale.h>
#include <termcap.h>

#include "fallback.h"

#include "input_common.h"

int writestr( char *str )
{
	write( 1, str, strlen(str) );
	return 0;
}

int main( int argc, char **argv)
{

	setlocale( LC_ALL, "" );
	

	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 */

		input_common_init(0);
		

		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=input_common_readch(0)) == 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);  

		input_common_destroy();
	}	

	return 0;
}