busybox/miscutils/strings.c

/* vi: set sw=4 ts=4: */
/*
 * strings implementation for busybox
 *
 * Copyright 2003 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 count;
	off_t offset;
	FILE *file;
	char *string;
	const char *fmt = "%s: ";
	const char *n_arg = "4";

	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_asciionly(c) || c == '\t') {
				if (count > n) {
					bb_putchar(c);
				} else {
					string[count] = c;
					if (count == n) {
						if (option_mask32 & PRINT_NAME) {
							printf(fmt, *argv);
						}
						if (option_mask32 & 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	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* strings implementation for busybox
4			*
5	niro	984	* Copyright 2003 Tito Ragusa <farmatito@tiscali.it>
6	niro	532	*
7			* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
8			*/
9
10	niro	816	#include "libbb.h"
11	niro	532
12			#define WHOLE_FILE 1
13			#define PRINT_NAME 2
14			#define PRINT_OFFSET 4
15			#define SIZE 8
16
17	niro	816	int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
18			int strings_main(int argc UNUSED_PARAM, char **argv)
19	niro	532	{
20	niro	816	int n, c, status = EXIT_SUCCESS;
21			unsigned count;
22			off_t offset;
23			FILE *file;
24	niro	532	char *string;
25			const char *fmt = "%s: ";
26	niro	816	const char *n_arg = "4";
27	niro	532
28	niro	984	getopt32(argv, "afon:", &n_arg);
29	niro	532	/* -a is our default behaviour */
30	niro	816	/argc -= optind;/
31	niro	532	argv += optind;
32
33	niro	816	n = xatou_range(n_arg, 1, INT_MAX);
34	niro	532	string = xzalloc(n + 1);
35			n--;
36
37	niro	816	if (!*argv) {
38	niro	532	fmt = "{%s}: ";
39	niro	816	--argv = (char )bb_msg_standard_input;
40	niro	532	}
41
42			do {
43	niro	816	file = fopen_or_warn_stdin(*argv);
44			if (!file) {
45			status = EXIT_FAILURE;
46			continue;
47			}
48			offset = 0;
49			count = 0;
50			do {
51			c = fgetc(file);
52	niro	984	if (isprint_asciionly(c) \|\| c == '\t') {
53	niro	816	if (count > n) {
54			bb_putchar(c);
55			} else {
56			string[count] = c;
57			if (count == n) {
58	niro	984	if (option_mask32 & PRINT_NAME) {
59	niro	532	printf(fmt, *argv);
60			}
61	niro	984	if (option_mask32 & PRINT_OFFSET) {
62	niro	816	printf("%7"OFF_FMT"o ", offset - n);
63	niro	532	}
64	niro	816	fputs(string, stdout);
65	niro	532	}
66	niro	816	count++;
67	niro	532	}
68	niro	816	} else {
69			if (count > n) {
70			bb_putchar('\n');
71			}
72			count = 0;
73			}
74			offset++;
75			} while (c != EOF);
76			fclose_if_not_stdin(file);
77			} while (*++argv);
78	niro	532
79			if (ENABLE_FEATURE_CLEAN_UP)
80			free(string);
81
82			fflush_stdout_and_exit(status);
83			}