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/*!
\file cmdline_m2gmetis.c
\brief Command-line argument parsing for m2gmetis
\date 12/24/2008
\author George
\version\verbatim $Id: cmdline_m2gmetis.c 10046 2011-06-01 14:13:40Z karypis $\endverbatim
*/
#include "metisbin.h"
/*-------------------------------------------------------------------
* Command-line options
*-------------------------------------------------------------------*/
static struct gk_option long_options[] = {
{"gtype", 1, 0, METIS_OPTION_GTYPE},
{"ncommon", 1, 0, METIS_OPTION_NCOMMON},
{"dbglvl", 1, 0, METIS_OPTION_DBGLVL},
{"help", 0, 0, METIS_OPTION_HELP},
{0, 0, 0, 0}
};
/*-------------------------------------------------------------------
* Mappings for the various parameter values
*-------------------------------------------------------------------*/
static gk_StringMap_t gtype_options[] = {
{"dual", METIS_GTYPE_DUAL},
{"nodal", METIS_GTYPE_NODAL},
{NULL, 0}
};
/*-------------------------------------------------------------------
* Mini help
*-------------------------------------------------------------------*/
static char helpstr[][100] =
{
" ",
"Usage: m2gmetis [options] <meshfile> <graphfile>",
" ",
" Required parameters",
" meshfile Stores the input mesh.",
" graphfile The filename of the output graph.",
" ",
" Optional parameters",
" -gtype=string",
" Specifies the graph that will be generated.",
" The possible values are:",
" dual - Generate dual graph of the mesh [default]",
" nodal - Generate the nodal graph of the mesh",
" ",
" -ncommon=int [applies when gtype=dual]",
" Specifies the common number of nodes that two elements must have",
" in order to put an edge between them in the dual graph. Default is 1.",
" ",
" -dbglvl=int ",
" Selects the dbglvl.",
" ",
" -help",
" Prints this message.",
""
};
static char shorthelpstr[][100] = {
" ",
" Usage: m2gmetis [options] <meshfile> <graphfile>",
" use 'm2gmetis -help' for a summary of the options.",
""
};
/*************************************************************************
* This is the entry point of the command-line argument parser
**************************************************************************/
params_t *parse_cmdline(int argc, char *argv[])
{
int i, j, k;
int c, option_index;
params_t *params;
params = (params_t *)gk_malloc(sizeof(params_t), "parse_cmdline");
memset((void *)params, 0, sizeof(params_t));
/* initialize the params data structure */
params->gtype = METIS_GTYPE_DUAL;
params->ncommon = 1;
params->dbglvl = 0;
params->filename = NULL;
params->outfile = NULL;
gk_clearcputimer(params->iotimer);
gk_clearcputimer(params->parttimer);
gk_clearcputimer(params->reporttimer);
/* Parse the command line arguments */
while ((c = gk_getopt_long_only(argc, argv, "", long_options, &option_index)) != -1) {
switch (c) {
case METIS_OPTION_GTYPE:
if (gk_optarg)
if ((params->gtype = gk_GetStringID(gtype_options, gk_optarg)) == -1)
errexit("Invalid option -%s=%s\n", long_options[option_index].name, gk_optarg);
break;
case METIS_OPTION_NCOMMON:
if (gk_optarg) params->ncommon = (idx_t)atoi(gk_optarg);
if (params->ncommon < 1)
errexit("The -ncommon option should specify a number >= 1.\n");
break;
case METIS_OPTION_DBGLVL:
if (gk_optarg) params->dbglvl = (idx_t)atoi(gk_optarg);
break;
case METIS_OPTION_HELP:
for (i=0; strlen(helpstr[i]) > 0; i++)
printf("%s\n", helpstr[i]);
exit(0);
break;
case '?':
default:
errexit("Illegal command-line option(s)\n"
"Use %s -help for a summary of the options.\n", argv[0]);
}
}
if (argc-gk_optind != 2) {
printf("Missing parameters.");
for (i=0; strlen(shorthelpstr[i]) > 0; i++)
printf("%s\n", shorthelpstr[i]);
exit(0);
}
params->filename = gk_strdup(argv[gk_optind++]);
params->outfile = gk_strdup(argv[gk_optind++]);
return params;
}
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