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/* waitstr  waits for a given string from stdin */

#include <stdio.h>
#include <string.h>
#include <unistd.h>


#define FALSE 	0
#define TRUE  	1

char scanstr[80];
int echo = FALSE;


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

	if(argc == 1)
		return;

	if(! getopts(argc, argv))
		exit(1);
	
	memset(scanstr, 0x20, 80);           /* Fill with spaces first */

	while(1) {
		c = fgetc(stdin);
		if(echo) fputc(c, stdout);
	
		strcpy(scanstr,&scanstr[1]);
			scanstr[79] = (char)c;
		if(strstr(scanstr, argv[optind]))
			break;
	}
	return 0;
}


getopts(int argc, char **argv)
{
	int c;
	opterr = 0;
	
	while((c = getopt(argc, argv, "e")) != -1) {
		switch(c) {
			case 'e':
				echo = TRUE;
				break;
			case '?':
				if(isprint(optopt))
					fprintf(stderr, "Unknown option '-%c'.\n", optopt);
				else
					fprintf(stderr, "Unknown option character '\\x%x'.\n", optopt);
				return 0;	
			default:
				abort();
		}
	}
	return 1;
}
.

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