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Diffstat (limited to 'src/H5private.h')
-rw-r--r-- | src/H5private.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/H5private.h b/src/H5private.h index 4bd0685..d11b15b 100644 --- a/src/H5private.h +++ b/src/H5private.h @@ -2634,6 +2634,57 @@ H5_DLL double H5_get_time(void); H5_DLL herr_t H5_build_extpath(const char *name, char **extpath /*out*/); H5_DLL herr_t H5_combine_path(const char *path1, const char *path2, char **full_name /*out*/); +/* getopt(3) equivalent that papers over the lack of long options on BSD + * and lack of Windows support. + */ +H5_DLLVAR int H5_opterr; /* get_option prints errors if this is on */ +H5_DLLVAR int H5_optind; /* token pointer */ +H5_DLLVAR const char *H5_optarg; /* flag argument (or value) */ + +enum h5_arg_level { + no_arg = 0, /* doesn't take an argument */ + require_arg, /* requires an argument */ + optional_arg /* argument is optional */ +}; + +/* + * get_option determines which options are specified on the command line and + * returns a pointer to any arguments possibly associated with the option in + * the ``H5_optarg'' variable. get_option returns the shortname equivalent of + * the option. The long options are specified in the following way: + * + * struct h5_long_options foo[] = { + * { "filename", require_arg, 'f' }, + * { "append", no_arg, 'a' }, + * { "width", require_arg, 'w' }, + * { NULL, 0, 0 } + * }; + * + * Long named options can have arguments specified as either: + * + * ``--param=arg'' or ``--param arg'' + * + * Short named options can have arguments specified as either: + * + * ``-w80'' or ``-w 80'' + * + * and can have more than one short named option specified at one time: + * + * -aw80 + * + * in which case those options which expect an argument need to come at the + * end. + */ +struct h5_long_options { + const char * name; /* Name of the long option */ + enum h5_arg_level has_arg; /* Whether we should look for an arg */ + char shortval; /* The shortname equivalent of long arg + * this gets returned from get_option + */ +}; + +H5_DLL int H5_get_option(int argc, const char **argv, const char *opt, const struct h5_long_options *l_opt); + #ifdef H5_HAVE_PARALLEL /* Generic MPI functions */ H5_DLL hsize_t H5_mpi_set_bigio_count(hsize_t new_count); |