busybox/miscutils/strings.c

/* vi: set sw=4 ts=4: */
/*
 * strings implementation for busybox
 *
 * Copyright Tito Ragusa <farmatito@tiscali.it>
 *
 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 */

#include "libbb.h"

#define WHOLE_FILE		1
#define PRINT_NAME		2
#define PRINT_OFFSET	4
#define SIZE			8

int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int strings_main(int argc UNUSED_PARAM, char **argv)
{
	int n, c, status = EXIT_SUCCESS;
	unsigned opt;
	unsigned count;
	off_t offset;
	FILE *file;
	char *string;
	const char *fmt = "%s: ";
	const char *n_arg = "4";

	opt = getopt32(argv, "afon:", &n_arg);
	/* -a is our default behaviour */
	/*argc -= optind;*/
	argv += optind;

	n = xatou_range(n_arg, 1, INT_MAX);
	string = xzalloc(n + 1);
	n--;

	if (!*argv) {
		fmt = "{%s}: ";
		*--argv = (char *)bb_msg_standard_input;
	}

	do {
		file = fopen_or_warn_stdin(*argv);
		if (!file) {
			status = EXIT_FAILURE;
			continue;
		}
		offset = 0;
		count = 0;
		do {
			c = fgetc(file);
			if (isprint(c) || c == '\t') {
				if (count > n) {
					bb_putchar(c);
				} else {
					string[count] = c;
					if (count == n) {
						if (opt & PRINT_NAME) {
							printf(fmt, *argv);
						}
						if (opt & PRINT_OFFSET) {
							printf("%7"OFF_FMT"o ", offset - n);
						}
						fputs(string, stdout);
					}
					count++;
				}
			} else {
				if (count > n) {
					bb_putchar('\n');
				}
				count = 0;
			}
			offset++;
		} while (c != EOF);
		fclose_if_not_stdin(file);
	} while (*++argv);

	if (ENABLE_FEATURE_CLEAN_UP)
		free(string);

	fflush_stdout_and_exit(status);
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* strings implementation for busybox
4	*
5	* Copyright Tito Ragusa <farmatito@tiscali.it>
6	*
7	* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
8	*/
9
10	#include "libbb.h"
11
12	#define WHOLE_FILE 1
13	#define PRINT_NAME 2
14	#define PRINT_OFFSET 4
15	#define SIZE 8
16
17	int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
18	int strings_main(int argc UNUSED_PARAM, char **argv)
19	{
20	int n, c, status = EXIT_SUCCESS;
21	unsigned opt;
22	unsigned count;
23	off_t offset;
24	FILE *file;
25	char *string;
26	const char *fmt = "%s: ";
27	const char *n_arg = "4";
28
29	opt = getopt32(argv, "afon:", &n_arg);
30	/* -a is our default behaviour */
31	/argc -= optind;/
32	argv += optind;
33
34	n = xatou_range(n_arg, 1, INT_MAX);
35	string = xzalloc(n + 1);
36	n--;
37
38	if (!*argv) {
39	fmt = "{%s}: ";
40	--argv = (char )bb_msg_standard_input;
41	}
42
43	do {
44	file = fopen_or_warn_stdin(*argv);
45	if (!file) {
46	status = EXIT_FAILURE;
47	continue;
48	}
49	offset = 0;
50	count = 0;
51	do {
52	c = fgetc(file);
53	if (isprint(c) \|\| c == '\t') {
54	if (count > n) {
55	bb_putchar(c);
56	} else {
57	string[count] = c;
58	if (count == n) {
59	if (opt & PRINT_NAME) {
60	printf(fmt, *argv);
61	}
62	if (opt & PRINT_OFFSET) {
63	printf("%7"OFF_FMT"o ", offset - n);
64	}
65	fputs(string, stdout);
66	}
67	count++;
68	}
69	} else {
70	if (count > n) {
71	bb_putchar('\n');
72	}
73	count = 0;
74	}
75	offset++;
76	} while (c != EOF);
77	fclose_if_not_stdin(file);
78	} while (*++argv);
79
80	if (ENABLE_FEATURE_CLEAN_UP)
81	free(string);
82
83	fflush_stdout_and_exit(status);
84	}