/*
 * Routines specific to Lattice C.
 */

/*
 * raw.c
 *
 * This is a routine for setting a given stream to raw or cooked mode on the
 * Amiga. This is useful when you are using Lattice C to produce programs
 * that want to read single characters with the "getch()" or "fgetc" call.
 *
 * Written : 18-Jun-87 By Chuck McManis.
 */

#include <exec/types.h>
#include <libraries/dos.h>
#include <libraries/dosextens.h>

#include <ios1.h>
#include <errno.h>
#include <stdio.h>

/*
 * Function raw() - Convert the specified file pointer to 'raw' mode. This
 * only works on TTYs and essentially keeps DOS from translating keys for
 * you, also (BIG WIN) it means getch() will return immediately rather than
 * wait for a return. You lose editing features though.
 */

long
raw(fp)
FILE *fp;
{
    struct MsgPort *mp; 	/* The File Handle message port */
    struct FileHandle *afh;
    struct UFB	   *ufb;
    long	    Arg[1], res;

    ufb = (struct UFB *) chkufb(fileno(fp));    /* Step one, get the file
						 * handle */
    afh = (struct FileHandle *) (ufb->ufbfh);

    if (!IsInteractive(afh)) {  /* Step two, check to see if it's a console */
	errno = ENOTTY;
	return (-1);
    }
    /* Step three, get it's message port. */
    mp = ((struct FileHandle *) (BADDR(afh)))->fh_Type;
    Arg[0] = -1L;
    res = SendPacket(mp, ACTION_SCREEN_MODE, Arg, 1);   /* Put it in RAW: mode */
    if (res == 0) {
	errno = ENXIO;
	return (-1);
    }
    return (0);
}

/*
 * Function - cooked() this function returns the designate file pointer to
 * its normal, wait for a <CR> mode. This is exactly like raw() except that
 * it sends a 0 to the console to make it back into a CON: from a RAW:
 */

long
cooked(fp)
FILE *fp;
{
    struct MsgPort *mp; 	/* The File Handle message port */
    struct FileHandle *afh;
    struct UFB	   *ufb;
    long	    Arg[1], res;

    ufb = (struct UFB *) chkufb(fileno(fp));
    afh = (struct FileHandle *) (ufb->ufbfh);
    if (!IsInteractive(afh)) {
	errno = ENOTTY;
	return (-1);
    }
    mp = ((struct FileHandle *) (BADDR(afh)))->fh_Type;
    Arg[0] = 0;
    res = SendPacket(mp, ACTION_SCREEN_MODE, Arg, 1);
    if (res == 0) {
	errno = ENXIO;
	return (-1);
    }
    return (0);
}