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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:30:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:30:35 +0000 |
commit | 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c (patch) | |
tree | 44dfb6ca500d32cabd450649b322a42e70a30683 /text-utils/line.c | |
parent | Initial commit. (diff) | |
download | util-linux-upstream.tar.xz util-linux-upstream.zip |
Adding upstream version 2.38.1.upstream/2.38.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'text-utils/line.c')
-rw-r--r-- | text-utils/line.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/text-utils/line.c b/text-utils/line.c new file mode 100644 index 0000000..e894076 --- /dev/null +++ b/text-utils/line.c @@ -0,0 +1,83 @@ +/* + * line - read one line + * + * Gunnar Ritter, Freiburg i. Br., Germany, December 2000. + * + * Public Domain. + */ + +/* + * This command is deprecated. The utility is in maintenance mode, + * meaning we keep them in source tree for backward compatibility + * only. Do not waste time making this command better, unless the + * fix is about security or other very critical issue. + * + * See Documentation/deprecated.txt for more information. + */ + +#include <getopt.h> +#include <stdio.h> +#include <unistd.h> + +#include "c.h" +#include "closestream.h" +#include "nls.h" +#include "widechar.h" + +static void __attribute__((__noreturn__)) usage(void) +{ + FILE *out = stdout; + fputs(USAGE_HEADER, out); + fprintf(out, _(" %s [options]\n"), program_invocation_short_name); + + fputs(USAGE_SEPARATOR, out); + fputs(_("Read one line.\n"), out); + + fputs(USAGE_OPTIONS, out); + printf(USAGE_HELP_OPTIONS(16)); + printf(USAGE_MAN_TAIL("line(1)")); + exit(EXIT_SUCCESS); +} + +int main(int argc, char **argv) +{ + wint_t c; + int opt; + int status = EXIT_SUCCESS; + + static const struct option longopts[] = { + {"version", no_argument, NULL, 'V'}, + {"help", no_argument, NULL, 'h'}, + {NULL, 0, NULL, 0} + }; + + setlocale(LC_ALL, ""); + bindtextdomain(PACKAGE, LOCALEDIR); + textdomain(PACKAGE); + close_stdout_atexit(); + + while ((opt = getopt_long(argc, argv, "Vh", longopts, NULL)) != -1) + switch (opt) { + case 'V': + print_version(EXIT_SUCCESS); + case 'h': + usage(); + default: + errtryhelp(EXIT_FAILURE); + } + + setvbuf(stdin, NULL, _IONBF, 0); + for (;;) { + c = getwchar(); + if (c == WEOF) { + status = EXIT_FAILURE; + break; + } + if (c == '\n') + break; + putwchar(c); + } + putwchar(L'\n'); + + return status; +} |