keyb.c

/*
======================================================================
Module to control keyboard input.

@author : Velorek
@version : 1.0

LAST MODIFIED : 14/04/2019 Rename headers
======================================================================
*/

/*====================================================================*/
/* COMPILER DIRECTIVES AND INCLUDES                                   */
/*====================================================================*/

#include <stdio.h>
#include "rterm.h"
#include "keyb.h"

/*====================================================================*/
/* FUNCTIONS - CODE                                                   */
/*====================================================================*/

/*----------------------------------*/
/* Read ESC-key char with its trail */
/*----------------------------------*/

int read_keytrail(char chartrail[5])
{
/*
   New implementation: Trail of chars found in keyboard.c
   If K_ESCAPE is captured read a trail up to 5 characters from the console.
   This is to control the fact that some keys may change
   according to the terminal and expand the editor's possibilities.
   Eg: F2 can be either 27 79 81 or 27 91 91 82.
*/
	char ch;
	int i;
	chartrail[0] = K_ESCAPE;
	for (i = 1; i < 5; i++) {
		if (kbhit(1) == 1) {
			ch = readch();
			chartrail[i] = ch;
		} else {
			chartrail[i] = 0;
		}
	}
	resetch();
	return 1;
}

/*----------------------------------*/
/* Read Accents and Special Chars   */
/*----------------------------------*/

int read_accent(char *ch, char accentchar[2])
{
/*
Input Ref: ch, accentchar
@return : 1 - SET 1 | 2 - SET 2 | 0 - NO ACCENT CHAR
*/
	int result;
	result = 0;
	//Accents and special chars
	accentchar[0] = 0;
	accentchar[1] = *ch;
	if (*ch == SPECIAL_CHARS_SET1) {
		accentchar[0] = SPECIAL_CHARS_SET1;	//Accents and special chars SET1
		accentchar[1] = readch();
		result = 1;
		resetch();
	}
	if (*ch == SPECIAL_CHARS_SET2) {
		accentchar[0] = SPECIAL_CHARS_SET2;	//Accents and special chars SET2
		accentchar[1] = readch();
		result = 2;
		resetch();
	}
	return result;
}