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/* -*- mode: c; c-file-style: "linux"; -*- */
/*
Copyright (C) 2003 Bob Ham <rah@bash.sh
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __jack_driver_parse_h__
#define __jack_driver_parse_h__
#include <jack/jslist.h>
#include "driver_interface.h"
static void
jack_print_driver_options (jack_driver_desc_t * desc, FILE *file)
{
unsigned long i;
char arg_default[JACK_DRIVER_PARAM_STRING_MAX + 1];
for (i = 0; i < desc->nparams; i++) {
switch (desc->params[i].type) {
case JackDriverParamInt:
sprintf (arg_default, "%" PRId32, desc->params[i].value.i);
break;
case JackDriverParamUInt:
sprintf (arg_default, "%" PRIu32, desc->params[i].value.ui);
break;
case JackDriverParamChar:
sprintf (arg_default, "%c", desc->params[i].value.c);
break;
case JackDriverParamString:
if (desc->params[i].value.str &&
strcmp (desc->params[i].value.str, "") != 0) {
sprintf (arg_default, "%s", desc->params[i].value.str);
} else {
sprintf (arg_default, "none");
}
break;
case JackDriverParamBool:
sprintf (arg_default, "%s", desc->params[i].value.i ? "true" : "false");
break;
}
fprintf (file, "\t-%c, --%s \t%s (default: %s)\n",
desc->params[i].character,
desc->params[i].name,
desc->params[i].short_desc,
arg_default);
}
}
static void
jack_print_driver_param_usage (jack_driver_desc_t * desc, unsigned long param, FILE *file)
{
fprintf (file, "Usage information for the '%s' parameter for driver '%s':\n",
desc->params[param].name, desc->name);
fprintf (file, "%s\n", desc->params[param].long_desc);
}
static int
jack_parse_driver_params (jack_driver_desc_t * desc, int argc, char **argv, JSList ** param_ptr)
{
struct option * long_options;
char * options, * options_ptr;
unsigned long i;
int opt, param_index;
JSList * params = NULL;
jack_driver_param_t * driver_param;
if (argc <= 1) {
*param_ptr = NULL;
return 0;
}
/* check for help */
if (strcmp (argv[1], "-h") == 0 || strcmp (argv[1], "--help") == 0) {
if (argc > 2) {
for (i = 0; i < desc->nparams; i++) {
if (strcmp (desc->params[i].name, argv[2]) == 0) {
jack_print_driver_param_usage (desc, i, stdout);
return 1;
}
}
fprintf (stderr, "jackd: unknown option '%s' "
"for driver '%s'\n", argv[2],
desc->name);
}
printf ("Parameters for driver '%s' (all parameters are optional):\n", desc->name);
jack_print_driver_options (desc, stdout);
return 1;
}
/* set up the stuff for getopt */
options = calloc (desc->nparams * 3 + 1, sizeof(char));
long_options = calloc (desc->nparams + 1, sizeof(struct option));
options_ptr = options;
for (i = 0; i < desc->nparams; i++) {
sprintf (options_ptr, "%c::", desc->params[i].character);
options_ptr += 3;
long_options[i].name = desc->params[i].name;
long_options[i].flag = NULL;
long_options[i].val = desc->params[i].character;
long_options[i].has_arg = optional_argument;
}
/* create the params */
optind = 0;
opterr = 0;
while ((opt = getopt_long (argc, argv, options, long_options, NULL)) != -1) {
if (opt == ':' || opt == '?') {
if (opt == ':') {
fprintf (stderr, "Missing option to argument '%c'\n", optopt);
} else {
fprintf (stderr, "Unknownage with option '%c'\n", optopt);
}
fprintf (stderr, "Options for driver '%s':\n", desc->name);
jack_print_driver_options (desc, stderr);
exit (1);
}
for (param_index = 0; param_index < desc->nparams; param_index++) {
if (opt == desc->params[param_index].character) {
break;
}
}
driver_param = calloc (1, sizeof(jack_driver_param_t));
driver_param->character = desc->params[param_index].character;
if (!optarg && optind < argc &&
strlen (argv[optind]) &&
argv[optind][0] != '-') {
optarg = argv[optind];
}
if (optarg) {
switch (desc->params[param_index].type) {
case JackDriverParamInt:
driver_param->value.i = atoi (optarg);
break;
case JackDriverParamUInt:
driver_param->value.ui = strtoul (optarg, NULL, 10);
break;
case JackDriverParamChar:
driver_param->value.c = optarg[0];
break;
case JackDriverParamString:
strncpy (driver_param->value.str, optarg, JACK_DRIVER_PARAM_STRING_MAX);
break;
case JackDriverParamBool:
if (strcasecmp ("false", optarg) == 0 ||
strcasecmp ("off", optarg) == 0 ||
strcasecmp ("no", optarg) == 0 ||
strcasecmp ("0", optarg) == 0 ||
strcasecmp ("(null)", optarg) == 0 ) {
driver_param->value.i = FALSE;
} else {
driver_param->value.i = TRUE;
}
break;
}
} else {
if (desc->params[param_index].type == JackDriverParamBool) {
driver_param->value.i = TRUE;
} else {
driver_param->value = desc->params[param_index].value;
}
}
params = jack_slist_append (params, driver_param);
}
free (options);
free (long_options);
if (param_ptr) {
*param_ptr = params;
}
return 0;
}
#endif /* __jack_driver_parse_h__ */
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