/*
 * This module implements the parser helper function that allows
 * the same code to be reused between interactive and one-shot
 * versions of the same command.
 */

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>

parse_interactive_command_into_argv(argstr, argv, min_arg, max_arg, argcp)
	char *argstr, **argv;
	int min_arg, max_arg, *argcp;
{
	char *cp, **ap;

	cp = argstr;
	for (ap = argv; ; ) {
		while (isspace(*cp))
			cp++;
		if (!*cp || *cp == '#')
			break;
		if (ap - argv >= max_arg) {
			printf("error: too many arguments\n");
			return(-1);
		}
		if (*cp == '"') {
			*ap++ = ++cp;
			while (*cp && *cp != '"')
				cp++;
			if (*cp != '"') {
				printf("error: unterminated quoted string\n");
				return(-1);
			}
			*cp++ = '\0';
		} else {
			*ap++ = cp;
			while (*cp && !isspace(*cp))
				cp++;
			if (*cp)
				*cp++ = '\0';
		}
	}
	if (ap - argv < min_arg) {
		printf("error: too few arguments\n");
		return(-1);
	}
	*ap = 0;
	*argcp = ap - argv;
	return(0);
}