[unix-history] / usr / src / cmd / und.c

#include <stdio.h>

main(argc, argv)
char **argv;
{
	register bflg, c, n;
	int undc=8;

	bflg = 1;
	if (argc>1 && argv[1][0]=='-') {
		undc = atoi(&argv[1][1]);
		if (undc>16)
			undc = 0;
		argc--;
		argv++;
	}
	if (argc>1) {
		if ((freopen(argv[1], "r", stdin))==NULL) {
			fprintf(stderr, "Cannot open %s\n", argv[1]);
			exit(1);
		}
	}
	while((c = getchar()) != EOF) {
		if(c == '\n' || c == 014) {
			bflg = 1;
			putchar(c);
			continue;
		}
		if(bflg) {
			for (n=0; n<undc; n++)
				putchar('\b');
			bflg = 0;
		}
		putchar(c);
	}
	return(0);
}
Commit	Line	Data
3b600ead TL	1	#include <stdio.h>
	2
	3	main(argc, argv)
	4	char **argv;
	5	{
	6	register bflg, c, n;
	7	int undc=8;
	8
	9	bflg = 1;
	10	if (argc>1 && argv[1][0]=='-') {
	11	undc = atoi(&argv[1][1]);
	12	if (undc>16)
	13	undc = 0;
	14	argc--;
	15	argv++;
	16	}
	17	if (argc>1) {
	18	if ((freopen(argv[1], "r", stdin))==NULL) {
	19	fprintf(stderr, "Cannot open %s\n", argv[1]);
	20	exit(1);
	21	}
	22	}
	23	while((c = getchar()) != EOF) {
	24	if(c == '\n' \|\| c == 014) {
	25	bflg = 1;
	26	putchar(c);
	27	continue;
	28	}
	29	if(bflg) {
	30	for (n=0; n<undc; n++)
	31	putchar('\b');
	32	bflg = 0;
	33	}
	34	putchar(c);
	35	}
	36	return(0);
	37	}