/*
 * input: text input routines
 */
#include <stdio.h>
#include "tsh.h"

static char *prompt;
static unsigned char line[200];
#define LINE (line+1)
static int ptr, size;

snatchline(str)
char *str;
{
    if (isatty(fileno(stdin))) {
	if (egetline(">", str) == EOF)
	    return EOF;
	strcat(str, "\n");
    }
    else if (!fgets(str, 200, stdin))
	return EOF;
    return 1;
}


input()
{
    if (ptr >= size) {
	if (isatty(fileno(stdin))) {
	    if (egetline(prompt, LINE) == EOF)
		return EOF;
	    strcat(LINE, "\n");
	    prompt = ">";
	}
	else if (!fgets(LINE, 200, stdin))
	    return EOF;
	size = strlen(LINE);
	ptr = 0;
    }
    return LINE[ptr++];
}

unput(c)
{
    LINE[--ptr] = c;
}

eos()
{
    return (ptr >= size);
}

eof()
{
    return feof(stdin);
}

flushline()
{
    ptr = size;
}

reset(pmpt)
char *pmpt;
{
    prompt = pmpt;
    memset(line, 0, 200);
    ptr = size = 0;
}