diff options
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 78 |
1 files changed, 74 insertions, 4 deletions
@@ -36,6 +36,12 @@ extern const char *PACKAGE_VERSION_GIT; #if defined(HAVE_GETOPT_LONG) && HAVE_GETOPT_LONG struct option LONGOPTS_[] = { { + .name = "list-formats", + .has_arg = 0, + .flag = NULL, + .val = 'F', + }, + { .name = "help", .has_arg = 0, .flag = NULL, @@ -62,15 +68,76 @@ _print_help(const char *program_name) _print_usage(stdout, program_name); puts("Options:"); #if defined(HAVE_GETOPT_LONG) && HAVE_GETOPT_LONG - puts("\t-h, --help Show this help information"); - puts("\t-V, --version Show version information"); + puts("\t-F, --list-formats List all supported date and time formats"); + puts("\t-h, --help Show this help information"); + puts("\t-V, --version Show version information"); #else + puts("\t-F List all supported date and time formats"); puts("\t-h Show this help information"); puts("\t-V Show version information"); #endif } static void +_list_formats(void) +{ + time_t tim; + struct tm *tm; + char *out; + size_t out_sz; + char *buf; + size_t i; + + tim = time(NULL); + tm = localtime(&tim); + + puts("Time formats:"); + out = NULL; + out_sz = 0; + buf = NULL; + i = 0; + while (datetime_strftime_time(tm, &out, &out_sz, &buf, &i) > 0) { + printf(" * %s\n", out); + } + if (out != NULL) { + free(out); + } + if (buf != NULL) { + free(buf); + } + + puts("Date formats:"); + out = NULL; + out_sz = 0; + buf = NULL; + i = 0; + while (datetime_strftime_date(tm, &out, &out_sz, &buf, &i) > 0) { + printf(" * %s\n", out); + } + if (out != NULL) { + free(out); + } + if (buf != NULL) { + free(buf); + } + + puts("Additional formats:"); + out = NULL; + out_sz = 0; + buf = NULL; + i = 0; + while (datetime_strftime_misc(tm, &out, &out_sz, &buf, &i) > 0) { + printf(" * %s\n", out); + } + if (out != NULL) { + free(out); + } + if (buf != NULL) { + free(buf); + } +} + +static void _print_version(void) { printf("@ (atsign) %s%s\n", PACKAGE_VERSION, PACKAGE_VERSION_GIT); @@ -128,11 +195,14 @@ main(int argc, char * const argv[]) optind = 1; opterr = 0; #if defined(HAVE_GETOPT_LONG) && HAVE_GETOPT_LONG - while ((opt = getopt_long(argc, argv, "hV", LONGOPTS_, NULL)) > 0) { + while ((opt = getopt_long(argc, argv, "FhV", LONGOPTS_, NULL)) > 0) { #else - while ((opt = getopt(argc, argv, "hV")) > 0) { + while ((opt = getopt(argc, argv, "FhV")) > 0) { #endif switch (opt) { + case 'F': + _list_formats(); + return EXIT_SUCCESS; case 'h': _print_help(argv[0]); return EXIT_SUCCESS; |