]> git.ipfire.org Git - thirdparty/util-linux.git/blame - text-utils/line.c
libfdisk: (dos) accept start for log.partitions on template
[thirdparty/util-linux.git] / text-utils / line.c
CommitLineData
63cccae4
KZ
1/*
2 * line - read one line
3 *
4 * Gunnar Ritter, Freiburg i. Br., Germany, December 2000.
5 *
6 * Public Domain.
7 */
8
ba0c9030
SK
9/*
10 * This command is deprecated. The utility is in maintenance mode,
11 * meaning we keep them in source tree for backward compatibility
12 * only. Do not waste time making this command better, unless the
13 * fix is about security or other very critical issue.
14 *
15 * See Documentation/deprecated.txt for more information.
16 */
17
c2e1ebbe
SK
18#include <getopt.h>
19#include <stdio.h>
20#include <unistd.h>
63cccae4 21
c2e1ebbe
SK
22#include "c.h"
23#include "closestream.h"
24#include "nls.h"
25#include "widechar.h"
63cccae4 26
c2e1ebbe 27static void __attribute__((__noreturn__)) usage(FILE *out)
63cccae4 28{
c2e1ebbe
SK
29 fputs(USAGE_HEADER, out);
30 fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
451dbcfa
BS
31
32 fputs(USAGE_SEPARATOR, out);
33 fputs(_("Read one line.\n"), out);
34
c2e1ebbe
SK
35 fputs(USAGE_OPTIONS, out);
36 fputs(USAGE_HELP, out);
37 fputs(USAGE_VERSION, out);
38 fprintf(out, USAGE_MAN_TAIL("line(1)"));
39 exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
40}
41
42int main(int argc, char **argv)
43{
44 wint_t c;
45 int opt;
46 int status = EXIT_SUCCESS;
47
48 static const struct option longopts[] = {
49 {"version", no_argument, NULL, 'V'},
50 {"help", no_argument, NULL, 'h'},
51 {NULL, 0, NULL, 0}
52 };
53
54 setlocale(LC_ALL, "");
55 bindtextdomain(PACKAGE, LOCALEDIR);
56 textdomain(PACKAGE);
57 atexit(close_stdout);
58
59 while ((opt = getopt_long(argc, argv, "Vh", longopts, NULL)) != -1)
60 switch (opt) {
61 case 'V':
62 printf(UTIL_LINUX_VERSION);
63 return EXIT_SUCCESS;
64 case 'h':
65 usage(stdout);
66 default:
677ec86c 67 errtryhelp(EXIT_FAILURE);
c2e1ebbe 68 }
63cccae4 69
e03f29b6 70 setvbuf(stdin, NULL, _IONBF, 0);
63cccae4 71 for (;;) {
c2e1ebbe
SK
72 c = getwchar();
73 if (c == WEOF) {
74 status = EXIT_FAILURE;
63cccae4
KZ
75 break;
76 }
77 if (c == '\n')
78 break;
c2e1ebbe 79 putwchar(c);
63cccae4 80 }
c2e1ebbe 81 putwchar(L'\n');
63cccae4 82
63cccae4
KZ
83 return status;
84}