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	niro	532	/* 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	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	niro	532	unsigned opt;
22	niro	816	unsigned count;
23			off_t offset;
24			FILE *file;
25	niro	532	char *string;
26			const char *fmt = "%s: ";
27	niro	816	const char *n_arg = "4";
28	niro	532
29	niro	816	opt = getopt32(argv, "afon:", &n_arg);
30	niro	532	/* -a is our default behaviour */
31	niro	816	/argc -= optind;/
32	niro	532	argv += optind;
33
34	niro	816	n = xatou_range(n_arg, 1, INT_MAX);
35	niro	532	string = xzalloc(n + 1);
36			n--;
37
38	niro	816	if (!*argv) {
39	niro	532	fmt = "{%s}: ";
40	niro	816	--argv = (char )bb_msg_standard_input;
41	niro	532	}
42
43			do {
44	niro	816	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	niro	532	if (opt & PRINT_NAME) {
60			printf(fmt, *argv);
61			}
62			if (opt & PRINT_OFFSET) {
63	niro	816	printf("%7"OFF_FMT"o ", offset - n);
64	niro	532	}
65	niro	816	fputs(string, stdout);
66	niro	532	}
67	niro	816	count++;
68	niro	532	}
69	niro	816	} 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	niro	532
80			if (ENABLE_FEATURE_CLEAN_UP)
81			free(string);
82
83			fflush_stdout_and_exit(status);
84			}