diff options
Diffstat (limited to 'src/tee.c')
| -rw-r--r-- | src/tee.c | 39 |
1 files changed, 35 insertions, 4 deletions
@@ -21,7 +21,9 @@ #include <sys/types.h> #include <signal.h> #include <getopt.h> + #include "system.h" +#include "version.h" char *xmalloc (); void error (); @@ -38,13 +40,31 @@ static int ignore_interrupts; /* The name that this program was run with. */ char *program_name; +/* If non-zero, display usage information and exit. */ +static int show_help; + +/* If non-zero, print the version on standard output and exit. */ +static int show_version; + static struct option const long_options[] = { {"append", no_argument, NULL, 'a'}, + {"help", no_argument, &show_help, 1}, {"ignore-interrupts", no_argument, NULL, 'i'}, + {"version", no_argument, &show_version, 1}, {NULL, 0, NULL, 0} }; +static void +usage () +{ + fprintf (stderr, "\ +Usage: %s [{--help,--version}] [-ai] [--append]\n\ + [--ignore-interrupts] [file...]\n", + program_name); + exit (1); +} + void main (argc, argv) int argc; @@ -62,20 +82,31 @@ main (argc, argv) { switch (optc) { + case 0: + break; + case 'a': append = 1; break; + case 'i': ignore_interrupts = 1; break; + default: - fprintf (stderr, "\ -Usage: %s [-ai] [--append] [--ignore-interrupts] [file...]\n", - program_name); - exit (1); + usage (); } } + if (show_version) + { + printf ("%s\n", version_string); + exit (0); + } + + if (show_help) + usage (); + if (ignore_interrupts) { #ifdef _POSIX_VERSION |