show.c - chromiumos/third_party/libsigrok-cli - Git at Google

 /*
  * This file is part of the sigrok-cli project.
  *
  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
  *
  * 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 3 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, see <http://www.gnu.org/licenses/>.
  */

 #include "sigrok-cli.h"
 #include <glib.h>
 #include <string.h>

 static gint sort_inputs(gconstpointer a, gconstpointer b)
 {
 	return strcmp(sr_input_id_get((struct sr_input_module *)a),
 			sr_input_id_get((struct sr_input_module *)b));
 }

 static gint sort_outputs(gconstpointer a, gconstpointer b)
 {
 	return strcmp(sr_output_id_get((struct sr_output_module *)a),
 			sr_output_id_get((struct sr_output_module *)b));
 }

 static gint sort_drivers(gconstpointer a, gconstpointer b)
 {
 	const struct sr_dev_driver *sdda = a, *sddb = b;

 	return strcmp(sdda->name, sddb->name);
 }

 #ifdef HAVE_SRD
 static gint sort_pds(gconstpointer a, gconstpointer b)
 {
 	const struct srd_decoder *sda = a, *sdb = b;

 	return strcmp(sda->id, sdb->id);
 }
 #endif

 void show_version(void)
 {
 	struct sr_dev_driver **drivers, *driver;
 	const struct sr_input_module **inputs, *input;
 	const struct sr_output_module **outputs, *output;
 	const GSList *l;
 	GSList *sl;
 	int i;
 #ifdef HAVE_SRD
 	struct srd_decoder *dec;
 #endif

 	printf("sigrok-cli %s\n\n", VERSION);

 	printf("Using libsigrok %s (lib version %s).\n",
 	       sr_package_version_string_get(), sr_lib_version_string_get());
 #ifdef HAVE_SRD
 	printf("Using libsigrokdecode %s (lib version %s).\n\n",
 	       srd_package_version_string_get(), srd_lib_version_string_get());
 #endif

 	printf("Supported hardware drivers:\n");
 	drivers = sr_driver_list();
 	for (sl = NULL, i = 0; drivers[i]; i++)
 		sl = g_slist_append(sl, drivers[i]);
 	sl = g_slist_sort(sl, sort_drivers);
 	for (l = sl; l; l = l->next) {
 		driver = l->data;
 		printf("  %-20s %s\n", driver->name, driver->longname);
 	}
 	printf("\n");
 	g_slist_free(sl);

 	printf("Supported input formats:\n");
 	inputs = sr_input_list();
 	for (sl = NULL, i = 0; inputs[i]; i++)
 		sl = g_slist_append(sl, (gpointer)inputs[i]);
 	sl = g_slist_sort(sl, sort_inputs);
 	for (l = sl; l; l = l->next) {
 		input = l->data;
 		printf("  %-20s %s\n", sr_input_id_get(input),
 				sr_input_description_get(input));
 	}
 	printf("\n");
 	g_slist_free(sl);

 	printf("Supported output formats:\n");
 	outputs = sr_output_list();
 	for (sl = NULL, i = 0; outputs[i]; i++)
 		sl = g_slist_append(sl, (gpointer)outputs[i]);
 	sl = g_slist_sort(sl, sort_outputs);
 	for (l = sl; l; l = l->next) {
 		output = l->data;
 		printf("  %-20s %s\n", sr_output_id_get(output),
 				sr_output_description_get(output));
 	}
 	printf("\n");
 	g_slist_free(sl);

 #ifdef HAVE_SRD
 	if (srd_init(NULL) == SRD_OK) {
 		printf("Supported protocol decoders:\n");
 		srd_decoder_load_all();
 		sl = g_slist_copy((GSList *)srd_decoder_list());
 		sl = g_slist_sort(sl, sort_pds);
 		for (l = sl; l; l = l->next) {
 			dec = l->data;
 			printf("  %-20s %s\n", dec->id, dec->longname);
 			/* Print protocol description upon "-l 3" or higher. */
 			if (opt_loglevel >= SR_LOG_INFO)
 				printf("  %-20s %s\n", "", dec->desc);
 		}
 		g_slist_free(sl);
 		srd_exit();
 	}
 	printf("\n");
 #endif
 }

 static gint sort_channels(gconstpointer a, gconstpointer b)
 {
 	const struct sr_channel *pa = a, *pb = b;

 	return pa->index - pb->index;
 }

 static void print_dev_line(const struct sr_dev_inst *sdi)
 {
 	struct sr_channel *ch;
 	GSList *sl, *l;
 	GString *s;
 	GVariant *gvar;

 	s = g_string_sized_new(128);
 	g_string_assign(s, sdi->driver->name);
 	if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_CONN, &gvar) == SR_OK) {
 		g_string_append(s, ":conn=");
 		g_string_append(s, g_variant_get_string(gvar, NULL));
 		g_variant_unref(gvar);
 	}
 	g_string_append(s, " - ");
 	if (sdi->vendor && sdi->vendor[0])
 		g_string_append_printf(s, "%s ", sdi->vendor);
 	if (sdi->model && sdi->model[0])
 		g_string_append_printf(s, "%s ", sdi->model);
 	if (sdi->version && sdi->version[0])
 		g_string_append_printf(s, "%s ", sdi->version);
 	if (sdi->channels) {
 		if (g_slist_length(sdi->channels) == 1) {
 			ch = sdi->channels->data;
 			g_string_append_printf(s, "with 1 channel: %s", ch->name);
 		} else {
 			sl = g_slist_sort(g_slist_copy(sdi->channels), sort_channels);
 			g_string_append_printf(s, "with %d channels:", g_slist_length(sl));
 			for (l = sl; l; l = l->next) {
 				ch = l->data;
 				g_string_append_printf(s, " %s", ch->name);
 			}
 			g_slist_free(sl);
 		}
 	}
 	g_string_append_printf(s, "\n");
 	printf("%s", s->str);
 	g_string_free(s, TRUE);

 }

 void show_dev_list(void)
 {
 	struct sr_dev_inst *sdi;
 	GSList *devices, *l;

 	if (!(devices = device_scan()))
 		return;

 	printf("The following devices were found:\n");
 	for (l = devices; l; l = l->next) {
 		sdi = l->data;
 		print_dev_line(sdi);
 	}
 	g_slist_free(devices);

 }

 void show_drv_detail(struct sr_dev_driver *driver)
 {
 	const struct sr_config_info *srci;
 	GVariant *gvar_opts;
 	const uint32_t *opts;
 	gsize num_elements, i;

 	if ((sr_config_list(driver, NULL, NULL, SR_CONF_DEVICE_OPTIONS,
 			&gvar_opts) == SR_OK)) {
 		opts = g_variant_get_fixed_array(gvar_opts, &num_elements,
 				sizeof(uint32_t));
 		if (num_elements) {
 			printf("Driver functions:\n");
 			for (i = 0; i < num_elements; i++) {
 				if (!(srci = sr_config_info_get(opts[i] & SR_CONF_MASK)))
 					continue;
 				printf("    %s\n", srci->name);
 			}
 		}
 		g_variant_unref(gvar_opts);
 	}

 	if ((sr_config_list(driver, NULL, NULL, SR_CONF_SCAN_OPTIONS,
 			&gvar_opts) == SR_OK)) {
 		opts = g_variant_get_fixed_array(gvar_opts, &num_elements,
 				sizeof(uint32_t));
 		if (num_elements) {
 			printf("Scan options:\n");
 			for (i = 0; i < num_elements; i++) {
 				if (!(srci = sr_config_info_get(opts[i] & SR_CONF_MASK)))
 					continue;
 				printf("    %s\n", srci->id);
 			}
 		}
 		g_variant_unref(gvar_opts);
 	}
 }

 void show_dev_detail(void)
 {
 	struct sr_dev_driver *driver;
 	struct sr_dev_inst *sdi;
 	const struct sr_config_info *srci;
 	struct sr_channel *ch;
 	struct sr_channel_group *channel_group, *cg;
 	GSList *devices, *cgl, *chl;
 	GVariant *gvar_opts, *gvar_dict, *gvar_list, *gvar;
 	gsize num_opts, num_elements;
 	double dlow, dhigh, dcur_low, dcur_high;
 	const uint64_t *uint64, p, q, low, high;
 	uint64_t tmp_uint64, cur_low, cur_high, cur_p, cur_q;
 	const uint32_t *opts;
 	const int32_t *int32;
 	uint32_t key, o;
 	unsigned int num_devices, i;
 	char *tmp_str, *s, c;
 	const char **stropts;

 	if (parse_driver(opt_drv, &driver, NULL)) {
 		/* A driver was specified, report driver-wide options now. */
 		show_drv_detail(driver);
 	}

 	if (!(devices = device_scan())) {
 		g_critical("No devices found.");
 		return;
 	}

 	num_devices = g_slist_length(devices);
 	if (num_devices > 1) {
 		g_critical("%d devices found. Use --scan to show them, "
 				"and select one to show.", num_devices);
 		return;
 	}

 	sdi = devices->data;
 	g_slist_free(devices);
 	print_dev_line(sdi);

 	if (sr_dev_open(sdi) != SR_OK) {
 		g_critical("Failed to open device.");
 		return;
 	}

 	/* Selected channels and channel group may affect which options are
 	 * returned, or which values for them. */
 	select_channels(sdi);
 	channel_group = select_channel_group(sdi);

 	if ((sr_config_list(sdi->driver, sdi, channel_group, SR_CONF_DEVICE_OPTIONS,
 			&gvar_opts)) != SR_OK)
 		/* Driver supports no device instance options. */
 		return;

 	if (sdi->channel_groups) {
 		printf("Channel groups:\n");
 		for (cgl = sdi->channel_groups; cgl; cgl = cgl->next) {
 			cg = cgl->data;
 			printf("    %s: channel%s", cg->name,
 					g_slist_length(cg->channels) > 1 ? "s" : "");
 			for (chl = cg->channels; chl; chl = chl->next) {
 				ch = chl->data;
 				printf(" %s", ch->name);
 			}
 			printf("\n");
 		}
 	}

 	printf("Supported configuration options");
 	if (sdi->channel_groups) {
 		if (!channel_group)
 			printf(" across all channel groups");
 		else
 			printf(" on channel group %s", channel_group->name);
 	}
 	printf(":\n");
 	opts = g_variant_get_fixed_array(gvar_opts, &num_opts, sizeof(uint32_t));
 	for (o = 0; o < num_opts; o++) {
 		key = opts[o] & SR_CONF_MASK;
 		if (!(srci = sr_config_info_get(key)))
 			continue;

 		if (key == SR_CONF_TRIGGER_MATCH) {
 			if (sr_config_list(sdi->driver, sdi, channel_group, key,
 					&gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
 			}
 			int32 = g_variant_get_fixed_array(gvar_list,
 					&num_elements, sizeof(int32_t));
 			printf("    Supported triggers: ");
 			for (i = 0; i < num_elements; i++) {
 				switch(int32[i]) {
 				case SR_TRIGGER_ZERO:
 					c = '0';
 					break;
 				case SR_TRIGGER_ONE:
 					c = '1';
 					break;
 				case SR_TRIGGER_RISING:
 					c = 'r';
 					break;
 				case SR_TRIGGER_FALLING:
 					c = 'f';
 					break;
 				case SR_TRIGGER_EDGE:
 					c = 'e';
 					break;
 				case SR_TRIGGER_OVER:
 					c = 'o';
 					break;
 				case SR_TRIGGER_UNDER:
 					c = 'u';
 					break;
 				default:
 					c = 0;
 					break;
 				}
 				if (c)
 					printf("%c ", c);
 			}
 			printf("\n");
 			g_variant_unref(gvar_list);

 		} else if (key == SR_CONF_LIMIT_SAMPLES) {
 			/* If implemented in config_list(), this denotes the
 			 * maximum number of samples a device can send. This
 			 * really applies only to logic analyzers, and then
 			 * only to those that don't support compression, or
 			 * have it turned off by default. The values returned
 			 * are the low/high limits. */
 			if (sr_config_list(sdi->driver, sdi, channel_group, key,
 					&gvar) != SR_OK) {
 				continue;
 			}
 			g_variant_get(gvar, "(tt)", &low, &high);
 			g_variant_unref(gvar);
 			printf("    Maximum number of samples: %"PRIu64"\n", high);

 		} else if (key == SR_CONF_SAMPLERATE) {
 			/* Supported samplerates */
 			printf("    %s", srci->id);
 			if (sr_config_list(sdi->driver, sdi, channel_group, SR_CONF_SAMPLERATE,
 					&gvar_dict) != SR_OK) {
 				printf("\n");
 				continue;
 			}
 			if ((gvar_list = g_variant_lookup_value(gvar_dict,
 					"samplerates", G_VARIANT_TYPE("at")))) {
 				uint64 = g_variant_get_fixed_array(gvar_list,
 						&num_elements, sizeof(uint64_t));
 				printf(" - supported samplerates:\n");
 				for (i = 0; i < num_elements; i++) {
 					if (!(s = sr_samplerate_string(uint64[i])))
 						continue;
 					printf("      %s\n", s);
 					g_free(s);
 				}
 				g_variant_unref(gvar_list);
 			} else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 					"samplerate-steps", G_VARIANT_TYPE("at")))) {
 				uint64 = g_variant_get_fixed_array(gvar_list,
 						&num_elements, sizeof(uint64_t));
 				/* low */
 				if (!(s = sr_samplerate_string(uint64[0])))
 					continue;
 				printf(" (%s", s);
 				g_free(s);
 				/* high */
 				if (!(s = sr_samplerate_string(uint64[1])))
 					continue;
 				printf(" - %s", s);
 				g_free(s);
 				/* step */
 				if (!(s = sr_samplerate_string(uint64[2])))
 					continue;
 				printf(" in steps of %s)\n", s);
 				g_free(s);
 				g_variant_unref(gvar_list);
 			}
 			g_variant_unref(gvar_dict);

 		} else if (srci->datatype == SR_T_UINT64) {
 			printf("    %s", srci->id);
 			gvar = NULL;
 			if (sr_config_get(sdi->driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				tmp_uint64 = g_variant_get_uint64(gvar);
 				g_variant_unref(gvar);
 			} else
 				tmp_uint64 = 0;
 			if (sr_config_list(sdi->driver, sdi, channel_group,
 					SR_CONF_BUFFERSIZE, &gvar_list) != SR_OK) {
 				if (gvar) {
 					/* Can't list it, but we have a value to show. */
 					printf("%"PRIu64" (current)", tmp_uint64);
 				}
 				printf("\n");
 				continue;
 			}
 			uint64 = g_variant_get_fixed_array(gvar_list,
 					&num_elements, sizeof(uint64_t));
 			printf(" - supported values:\n");
 			for (i = 0; i < num_elements; i++) {
 				printf("      %"PRIu64, uint64[i]);
 				if (gvar && tmp_uint64 == uint64[i])
 					printf(" (current)");
 				printf("\n");
 			}
 			g_variant_unref(gvar_list);

 		} else if (srci->datatype == SR_T_STRING) {
 			printf("    %s: ", srci->id);
 			if (sr_config_get(sdi->driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				tmp_str = g_strdup(g_variant_get_string(gvar, NULL));
 				g_variant_unref(gvar);
 			} else
 				tmp_str = NULL;

 			if (sr_config_list(sdi->driver, sdi, channel_group, key,
 					&gvar) != SR_OK) {
 				if (tmp_str) {
 					/* Can't list it, but we have a value to show. */
 					printf("%s (current)", tmp_str);
 				}
 				printf("\n");
 				g_free(tmp_str);
 				continue;
 			}

 			stropts = g_variant_get_strv(gvar, &num_elements);
 			for (i = 0; i < num_elements; i++) {
 				if (i)
 					printf(", ");
 				printf("%s", stropts[i]);
 				if (tmp_str && !strcmp(tmp_str, stropts[i]))
 					printf(" (current)");
 			}
 			printf("\n");
 			g_free(stropts);
 			g_free(tmp_str);
 			g_variant_unref(gvar);

 		} else if (srci->datatype == SR_T_UINT64_RANGE) {
 			printf("    %s: ", srci->id);
 			if (sr_config_list(sdi->driver, sdi, channel_group, key,
 					&gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
 			}

 			if (sr_config_get(sdi->driver, sdi, channel_group, key, &gvar) == SR_OK) {
 				g_variant_get(gvar, "(tt)", &cur_low, &cur_high);
 				g_variant_unref(gvar);
 			} else {
 				cur_low = 0;
 				cur_high = 0;
 			}

 			num_elements = g_variant_n_children(gvar_list);
 			for (i = 0; i < num_elements; i++) {
 				gvar = g_variant_get_child_value(gvar_list, i);
 				g_variant_get(gvar, "(tt)", &low, &high);
 				g_variant_unref(gvar);
 				if (i)
 					printf(", ");
 				printf("%"PRIu64"-%"PRIu64, low, high);
 				if (low == cur_low && high == cur_high)
 					printf(" (current)");
 			}
 			printf("\n");
 			g_variant_unref(gvar_list);

 		} else if (srci->datatype == SR_T_BOOL) {
 			printf("    %s: ", srci->id);
 			if (sr_config_get(sdi->driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				if (g_variant_get_boolean(gvar))
 					printf("on (current), off\n");
 				else
 					printf("on, off (current)\n");
 				g_variant_unref(gvar);
 			} else
 				printf("on, off\n");

 		} else if (srci->datatype == SR_T_DOUBLE_RANGE) {
 			printf("    %s: ", srci->id);
 			if (sr_config_list(sdi->driver, sdi, channel_group, key,
 					&gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
 			}

 			if (sr_config_get(sdi->driver, sdi, channel_group, key, &gvar) == SR_OK) {
 				g_variant_get(gvar, "(dd)", &dcur_low, &dcur_high);
 				g_variant_unref(gvar);
 			} else {
 				dcur_low = 0;
 				dcur_high = 0;
 			}

 			num_elements = g_variant_n_children(gvar_list);
 			for (i = 0; i < num_elements; i++) {
 				gvar = g_variant_get_child_value(gvar_list, i);
 				g_variant_get(gvar, "(dd)", &dlow, &dhigh);
 				g_variant_unref(gvar);
 				if (i)
 					printf(", ");
 				printf("%.1f-%.1f", dlow, dhigh);
 				if (dlow == dcur_low && dhigh == dcur_high)
 					printf(" (current)");
 			}
 			printf("\n");
 			g_variant_unref(gvar_list);

 		} else if (srci->datatype == SR_T_FLOAT) {
 			printf("    %s: ", srci->id);
 			if (sr_config_get(sdi->driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				printf("%f\n", g_variant_get_double(gvar));
 				g_variant_unref(gvar);
 			} else
 				printf("\n");

 		} else if (srci->datatype == SR_T_RATIONAL_PERIOD
 				|| srci->datatype == SR_T_RATIONAL_VOLT) {
 			printf("    %s", srci->id);
 			if (sr_config_get(sdi->driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				g_variant_get(gvar, "(tt)", &cur_p, &cur_q);
 				g_variant_unref(gvar);
 			} else
 				cur_p = cur_q = 0;

 			if (sr_config_list(sdi->driver, sdi, channel_group,
 					key, &gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
 			}
 			printf(" - supported values:\n");
 			num_elements = g_variant_n_children(gvar_list);
 			for (i = 0; i < num_elements; i++) {
 				gvar = g_variant_get_child_value(gvar_list, i);
 				g_variant_get(gvar, "(tt)", &p, &q);
 				if (srci->datatype == SR_T_RATIONAL_PERIOD)
 					s = sr_period_string(p * q);
 				else
 					s = sr_voltage_string(p, q);
 				printf("      %s", s);
 				g_free(s);
 				if (p == cur_p && q == cur_q)
 					printf(" (current)");
 				printf("\n");
 			}
 			g_variant_unref(gvar_list);

 		} else {

 			/* Everything else */
 			printf("    %s\n", srci->id);
 		}
 	}
 	g_variant_unref(gvar_opts);

 	sr_dev_close(sdi);

 }

 #ifdef HAVE_SRD
 void show_pd_detail(void)
 {
 	struct srd_decoder *dec;
 	struct srd_decoder_option *o;
 	struct srd_channel *pdch;
 	struct srd_decoder_annotation_row *r;
 	GSList *l, *ll, *ol;
 	int idx;
 	char **pdtokens, **pdtok, *optsep, **ann, *val, *doc;

 	pdtokens = g_strsplit(opt_pds, ",", -1);
 	for (pdtok = pdtokens; *pdtok; pdtok++) {
 		/* Strip options. */
 		if ((optsep = strchr(*pdtok, ':')))
 			*optsep = '\0';
 		if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 			g_critical("Protocol decoder %s not found.", *pdtok);
 			return;
 		}
 		printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
 				dec->id, dec->name, dec->longname, dec->desc);
 		printf("License: %s\n", dec->license);
 		printf("Annotation classes:\n");
 		if (dec->annotations) {
 			for (l = dec->annotations; l; l = l->next) {
 				ann = l->data;
 				printf("- %s: %s\n", ann[0], ann[1]);
 			}
 		} else {
 			printf("None.\n");
 		}
 		printf("Annotation rows:\n");
 		if (dec->annotation_rows) {
 			for (l = dec->annotation_rows; l; l = l->next) {
 				r = l->data;
 				printf("- %s (%s): ", r->id, r->desc);
 				for (ll = r->ann_classes; ll; ll = ll->next) {
 					idx = GPOINTER_TO_INT(ll->data);
 					ann = g_slist_nth_data(dec->annotations, idx);
 					printf("%s", ann[0]);
 					if (ll->next)
 						printf(", ");
 				}
 				printf("\n");
 			}
 		} else {
 			printf("None.\n");
 		}
 		printf("Required channels:\n");
 		if (dec->channels) {
 			for (l = dec->channels; l; l = l->next) {
 				pdch = l->data;
 				printf("- %s (%s): %s\n",
 				       pdch->id, pdch->name, pdch->desc);
 			}
 		} else {
 			printf("None.\n");
 		}
 		printf("Optional channels:\n");
 		if (dec->opt_channels) {
 			for (l = dec->opt_channels; l; l = l->next) {
 				pdch = l->data;
 				printf("- %s (%s): %s\n",
 				       pdch->id, pdch->name, pdch->desc);
 			}
 		} else {
 			printf("None.\n");
 		}
 		printf("Options:\n");
 		if (dec->options) {
 			for (l = dec->options; l; l = l->next) {
 				o = l->data;
 				printf("- %s: %s (", o->id, o->desc);
 				for (ol = o->values; ol; ol = ol->next) {
 					val = g_variant_print(ol->data, FALSE);
 					printf("%s, ", val);
 					g_free(val);
 				}
 				val = g_variant_print(o->def, FALSE);
 				printf("default %s)\n", val);
 				g_free(val);
 			}
 		} else {
 			printf("None.\n");
 		}
 		if ((doc = srd_decoder_doc_get(dec))) {
 			printf("Documentation:\n%s\n",
 			       doc[0] == '\n' ? doc + 1 : doc);
 			g_free(doc);
 		}
 	}

 	g_strfreev(pdtokens);
 }
 #endif

 void show_input(void)
 {
 	const struct sr_input_module *imod;
 	const struct sr_option **opts;
 	GSList *l;
 	int i;
 	char *s, **tok;

 	tok = g_strsplit(opt_input_format, ":", 0);
 	if (!tok[0] || !(imod = sr_input_find(tok[0])))
 		g_critical("Input module '%s' not found.", opt_input_format);

 	printf("ID: %s\nName: %s\n", sr_input_id_get(imod),
 			sr_input_name_get(imod));
 	printf("Description: %s\n", sr_input_description_get(imod));
 	if ((opts = sr_input_options_get(imod))) {
 		printf("Options:\n");
 		for (i = 0; opts[i]; i++) {
 			printf("  %s: %s", opts[i]->id, opts[i]->desc);
 			if (opts[i]->def) {
 				s = g_variant_print(opts[i]->def, FALSE);
 				printf(" (default %s", s);
 				g_free(s);
 				if (opts[i]->values) {
 					printf(", possible values ");
 					for (l = opts[i]->values; l; l = l->next) {
 						s = g_variant_print((GVariant *)l->data, FALSE);
 						printf("%s%s", s, l->next ? ", " : "");
 						g_free(s);
 					}
 				}
 				printf(")");
 			}
 			printf("\n");
 		}
 		sr_input_options_free(opts);
 	}
 	g_strfreev(tok);
 }

 void show_output(void)
 {
 	const struct sr_output_module *omod;
 	const struct sr_option **opts;
 	GSList *l;
 	int i;
 	char *s, **tok;

 	tok = g_strsplit(opt_output_format, ":", 0);
 	if (!tok[0] || !(omod = sr_output_find(tok[0])))
 		g_critical("Output module '%s' not found.", opt_output_format);

 	printf("ID: %s\nName: %s\n", sr_output_id_get(omod),
 			sr_output_name_get(omod));
 	printf("Description: %s\n", sr_output_description_get(omod));
 	if ((opts = sr_output_options_get(omod))) {
 		printf("Options:\n");
 		for (i = 0; opts[i]; i++) {
 			printf("  %s: %s", opts[i]->id, opts[i]->desc);
 			if (opts[i]->def) {
 				s = g_variant_print(opts[i]->def, FALSE);
 				printf(" (default %s", s);
 				g_free(s);
 				if (opts[i]->values) {
 					printf(", possible values ");
 					for (l = opts[i]->values; l; l = l->next) {
 						s = g_variant_print((GVariant *)l->data, FALSE);
 						printf("%s%s", s, l->next ? ", " : "");
 						g_free(s);
 					}
 				}
 				printf(")");
 			}
 			printf("\n");
 		}
 		sr_output_options_free(opts);
 	}
 	g_strfreev(tok);
 }
	/*
	* This file is part of the sigrok-cli project.
	*
	* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
	*
	* 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 3 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, see <http://www.gnu.org/licenses/>.
	*/

	#include "sigrok-cli.h"
	#include <glib.h>
	#include <string.h>

	static gint sort_inputs(gconstpointer a, gconstpointer b)
	{
	return strcmp(sr_input_id_get((struct sr_input_module *)a),
	sr_input_id_get((struct sr_input_module *)b));
	}

	static gint sort_outputs(gconstpointer a, gconstpointer b)
	{
	return strcmp(sr_output_id_get((struct sr_output_module *)a),
	sr_output_id_get((struct sr_output_module *)b));
	}

	static gint sort_drivers(gconstpointer a, gconstpointer b)
	{
	const struct sr_dev_driver sdda = a, sddb = b;

	return strcmp(sdda->name, sddb->name);
	}

	#ifdef HAVE_SRD
	static gint sort_pds(gconstpointer a, gconstpointer b)
	{
	const struct srd_decoder sda = a, sdb = b;

	return strcmp(sda->id, sdb->id);
	}
	#endif

	void show_version(void)
	{
	struct sr_dev_driver *drivers, driver;
	const struct sr_input_module *inputs, input;
	const struct sr_output_module *outputs, output;
	const GSList *l;
	GSList *sl;
	int i;
	#ifdef HAVE_SRD
	struct srd_decoder *dec;
	#endif

	printf("sigrok-cli %s\n\n", VERSION);

	printf("Using libsigrok %s (lib version %s).\n",
	sr_package_version_string_get(), sr_lib_version_string_get());
	#ifdef HAVE_SRD
	printf("Using libsigrokdecode %s (lib version %s).\n\n",
	srd_package_version_string_get(), srd_lib_version_string_get());
	#endif

	printf("Supported hardware drivers:\n");
	drivers = sr_driver_list();
	for (sl = NULL, i = 0; drivers[i]; i++)
	sl = g_slist_append(sl, drivers[i]);
	sl = g_slist_sort(sl, sort_drivers);
	for (l = sl; l; l = l->next) {
	driver = l->data;
	printf(" %-20s %s\n", driver->name, driver->longname);
	}
	printf("\n");
	g_slist_free(sl);

	printf("Supported input formats:\n");
	inputs = sr_input_list();
	for (sl = NULL, i = 0; inputs[i]; i++)
	sl = g_slist_append(sl, (gpointer)inputs[i]);
	sl = g_slist_sort(sl, sort_inputs);
	for (l = sl; l; l = l->next) {
	input = l->data;
	printf(" %-20s %s\n", sr_input_id_get(input),
	sr_input_description_get(input));
	}
	printf("\n");
	g_slist_free(sl);

	printf("Supported output formats:\n");
	outputs = sr_output_list();
	for (sl = NULL, i = 0; outputs[i]; i++)
	sl = g_slist_append(sl, (gpointer)outputs[i]);
	sl = g_slist_sort(sl, sort_outputs);
	for (l = sl; l; l = l->next) {
	output = l->data;
	printf(" %-20s %s\n", sr_output_id_get(output),
	sr_output_description_get(output));
	}
	printf("\n");
	g_slist_free(sl);

	#ifdef HAVE_SRD
	if (srd_init(NULL) == SRD_OK) {
	printf("Supported protocol decoders:\n");
	srd_decoder_load_all();
	sl = g_slist_copy((GSList *)srd_decoder_list());
	sl = g_slist_sort(sl, sort_pds);
	for (l = sl; l; l = l->next) {
	dec = l->data;
	printf(" %-20s %s\n", dec->id, dec->longname);
	/* Print protocol description upon "-l 3" or higher. */
	if (opt_loglevel >= SR_LOG_INFO)
	printf(" %-20s %s\n", "", dec->desc);
	}
	g_slist_free(sl);
	srd_exit();
	}
	printf("\n");
	#endif
	}

	static gint sort_channels(gconstpointer a, gconstpointer b)
	{
	const struct sr_channel pa = a, pb = b;

	return pa->index - pb->index;
	}

	static void print_dev_line(const struct sr_dev_inst *sdi)
	{
	struct sr_channel *ch;
	GSList sl, l;
	GString *s;
	GVariant *gvar;

	s = g_string_sized_new(128);
	g_string_assign(s, sdi->driver->name);
	if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_CONN, &gvar) == SR_OK) {
	g_string_append(s, ":conn=");
	g_string_append(s, g_variant_get_string(gvar, NULL));
	g_variant_unref(gvar);
	}
	g_string_append(s, " - ");
	if (sdi->vendor && sdi->vendor[0])
	g_string_append_printf(s, "%s ", sdi->vendor);
	if (sdi->model && sdi->model[0])
	g_string_append_printf(s, "%s ", sdi->model);
	if (sdi->version && sdi->version[0])
	g_string_append_printf(s, "%s ", sdi->version);
	if (sdi->channels) {
	if (g_slist_length(sdi->channels) == 1) {
	ch = sdi->channels->data;
	g_string_append_printf(s, "with 1 channel: %s", ch->name);
	} else {
	sl = g_slist_sort(g_slist_copy(sdi->channels), sort_channels);
	g_string_append_printf(s, "with %d channels:", g_slist_length(sl));
	for (l = sl; l; l = l->next) {
	ch = l->data;
	g_string_append_printf(s, " %s", ch->name);
	}
	g_slist_free(sl);
	}
	}
	g_string_append_printf(s, "\n");
	printf("%s", s->str);
	g_string_free(s, TRUE);

	}

	void show_dev_list(void)
	{
	struct sr_dev_inst *sdi;
	GSList devices, l;

	if (!(devices = device_scan()))
	return;

	printf("The following devices were found:\n");
	for (l = devices; l; l = l->next) {
	sdi = l->data;
	print_dev_line(sdi);
	}
	g_slist_free(devices);

	}

	void show_drv_detail(struct sr_dev_driver *driver)
	{
	const struct sr_config_info *srci;
	GVariant *gvar_opts;
	const uint32_t *opts;
	gsize num_elements, i;

	if ((sr_config_list(driver, NULL, NULL, SR_CONF_DEVICE_OPTIONS,
	&gvar_opts) == SR_OK)) {
	opts = g_variant_get_fixed_array(gvar_opts, &num_elements,
	sizeof(uint32_t));
	if (num_elements) {
	printf("Driver functions:\n");
	for (i = 0; i < num_elements; i++) {
	if (!(srci = sr_config_info_get(opts[i] & SR_CONF_MASK)))
	continue;
	printf(" %s\n", srci->name);
	}
	}
	g_variant_unref(gvar_opts);
	}

	if ((sr_config_list(driver, NULL, NULL, SR_CONF_SCAN_OPTIONS,
	&gvar_opts) == SR_OK)) {
	opts = g_variant_get_fixed_array(gvar_opts, &num_elements,
	sizeof(uint32_t));
	if (num_elements) {
	printf("Scan options:\n");
	for (i = 0; i < num_elements; i++) {
	if (!(srci = sr_config_info_get(opts[i] & SR_CONF_MASK)))
	continue;
	printf(" %s\n", srci->id);
	}
	}
	g_variant_unref(gvar_opts);
	}
	}

	void show_dev_detail(void)
	{
	struct sr_dev_driver *driver;
	struct sr_dev_inst *sdi;
	const struct sr_config_info *srci;
	struct sr_channel *ch;
	struct sr_channel_group channel_group, cg;
	GSList devices, cgl, *chl;
	GVariant gvar_opts, gvar_dict, gvar_list, gvar;
	gsize num_opts, num_elements;
	double dlow, dhigh, dcur_low, dcur_high;
	const uint64_t *uint64, p, q, low, high;
	uint64_t tmp_uint64, cur_low, cur_high, cur_p, cur_q;
	const uint32_t *opts;
	const int32_t *int32;
	uint32_t key, o;
	unsigned int num_devices, i;
	char tmp_str, s, c;
	const char **stropts;

	if (parse_driver(opt_drv, &driver, NULL)) {
	/* A driver was specified, report driver-wide options now. */
	show_drv_detail(driver);
	}

	if (!(devices = device_scan())) {
	g_critical("No devices found.");
	return;
	}

	num_devices = g_slist_length(devices);
	if (num_devices > 1) {
	g_critical("%d devices found. Use --scan to show them, "
	"and select one to show.", num_devices);
	return;
	}

	sdi = devices->data;
	g_slist_free(devices);
	print_dev_line(sdi);

	if (sr_dev_open(sdi) != SR_OK) {
	g_critical("Failed to open device.");
	return;
	}

	/* Selected channels and channel group may affect which options are
	* returned, or which values for them. */
	select_channels(sdi);
	channel_group = select_channel_group(sdi);

	if ((sr_config_list(sdi->driver, sdi, channel_group, SR_CONF_DEVICE_OPTIONS,
	&gvar_opts)) != SR_OK)
	/* Driver supports no device instance options. */
	return;

	if (sdi->channel_groups) {
	printf("Channel groups:\n");
	for (cgl = sdi->channel_groups; cgl; cgl = cgl->next) {
	cg = cgl->data;
	printf(" %s: channel%s", cg->name,
	g_slist_length(cg->channels) > 1 ? "s" : "");
	for (chl = cg->channels; chl; chl = chl->next) {
	ch = chl->data;
	printf(" %s", ch->name);
	}
	printf("\n");
	}
	}

	printf("Supported configuration options");
	if (sdi->channel_groups) {
	if (!channel_group)
	printf(" across all channel groups");
	else
	printf(" on channel group %s", channel_group->name);
	}
	printf(":\n");
	opts = g_variant_get_fixed_array(gvar_opts, &num_opts, sizeof(uint32_t));
	for (o = 0; o < num_opts; o++) {
	key = opts[o] & SR_CONF_MASK;
	if (!(srci = sr_config_info_get(key)))
	continue;

	if (key == SR_CONF_TRIGGER_MATCH) {
	if (sr_config_list(sdi->driver, sdi, channel_group, key,
	&gvar_list) != SR_OK) {
	printf("\n");
	continue;
	}
	int32 = g_variant_get_fixed_array(gvar_list,
	&num_elements, sizeof(int32_t));
	printf(" Supported triggers: ");
	for (i = 0; i < num_elements; i++) {
	switch(int32[i]) {
	case SR_TRIGGER_ZERO:
	c = '0';
	break;
	case SR_TRIGGER_ONE:
	c = '1';
	break;
	case SR_TRIGGER_RISING:
	c = 'r';
	break;
	case SR_TRIGGER_FALLING:
	c = 'f';
	break;
	case SR_TRIGGER_EDGE:
	c = 'e';
	break;
	case SR_TRIGGER_OVER:
	c = 'o';
	break;
	case SR_TRIGGER_UNDER:
	c = 'u';
	break;
	default:
	c = 0;
	break;
	}
	if (c)
	printf("%c ", c);
	}
	printf("\n");
	g_variant_unref(gvar_list);

	} else if (key == SR_CONF_LIMIT_SAMPLES) {
	/* If implemented in config_list(), this denotes the
	* maximum number of samples a device can send. This
	* really applies only to logic analyzers, and then
	* only to those that don't support compression, or
	* have it turned off by default. The values returned
	* are the low/high limits. */
	if (sr_config_list(sdi->driver, sdi, channel_group, key,
	&gvar) != SR_OK) {
	continue;
	}
	g_variant_get(gvar, "(tt)", &low, &high);
	g_variant_unref(gvar);
	printf(" Maximum number of samples: %"PRIu64"\n", high);

	} else if (key == SR_CONF_SAMPLERATE) {
	/* Supported samplerates */
	printf(" %s", srci->id);
	if (sr_config_list(sdi->driver, sdi, channel_group, SR_CONF_SAMPLERATE,
	&gvar_dict) != SR_OK) {
	printf("\n");
	continue;
	}
	if ((gvar_list = g_variant_lookup_value(gvar_dict,
	"samplerates", G_VARIANT_TYPE("at")))) {
	uint64 = g_variant_get_fixed_array(gvar_list,
	&num_elements, sizeof(uint64_t));
	printf(" - supported samplerates:\n");
	for (i = 0; i < num_elements; i++) {
	if (!(s = sr_samplerate_string(uint64[i])))
	continue;
	printf(" %s\n", s);
	g_free(s);
	}
	g_variant_unref(gvar_list);
	} else if ((gvar_list = g_variant_lookup_value(gvar_dict,
	"samplerate-steps", G_VARIANT_TYPE("at")))) {
	uint64 = g_variant_get_fixed_array(gvar_list,
	&num_elements, sizeof(uint64_t));
	/* low */
	if (!(s = sr_samplerate_string(uint64[0])))
	continue;
	printf(" (%s", s);
	g_free(s);
	/* high */
	if (!(s = sr_samplerate_string(uint64[1])))
	continue;
	printf(" - %s", s);
	g_free(s);
	/* step */
	if (!(s = sr_samplerate_string(uint64[2])))
	continue;
	printf(" in steps of %s)\n", s);
	g_free(s);
	g_variant_unref(gvar_list);
	}
	g_variant_unref(gvar_dict);

	} else if (srci->datatype == SR_T_UINT64) {
	printf(" %s", srci->id);
	gvar = NULL;
	if (sr_config_get(sdi->driver, sdi, channel_group, key,
	&gvar) == SR_OK) {
	tmp_uint64 = g_variant_get_uint64(gvar);
	g_variant_unref(gvar);
	} else
	tmp_uint64 = 0;
	if (sr_config_list(sdi->driver, sdi, channel_group,
	SR_CONF_BUFFERSIZE, &gvar_list) != SR_OK) {
	if (gvar) {
	/* Can't list it, but we have a value to show. */
	printf("%"PRIu64" (current)", tmp_uint64);
	}
	printf("\n");
	continue;
	}
	uint64 = g_variant_get_fixed_array(gvar_list,
	&num_elements, sizeof(uint64_t));
	printf(" - supported values:\n");
	for (i = 0; i < num_elements; i++) {
	printf(" %"PRIu64, uint64[i]);
	if (gvar && tmp_uint64 == uint64[i])
	printf(" (current)");
	printf("\n");
	}
	g_variant_unref(gvar_list);

	} else if (srci->datatype == SR_T_STRING) {
	printf(" %s: ", srci->id);
	if (sr_config_get(sdi->driver, sdi, channel_group, key,
	&gvar) == SR_OK) {
	tmp_str = g_strdup(g_variant_get_string(gvar, NULL));
	g_variant_unref(gvar);
	} else
	tmp_str = NULL;

	if (sr_config_list(sdi->driver, sdi, channel_group, key,
	&gvar) != SR_OK) {
	if (tmp_str) {
	/* Can't list it, but we have a value to show. */
	printf("%s (current)", tmp_str);
	}
	printf("\n");
	g_free(tmp_str);
	continue;
	}

	stropts = g_variant_get_strv(gvar, &num_elements);
	for (i = 0; i < num_elements; i++) {
	if (i)
	printf(", ");
	printf("%s", stropts[i]);
	if (tmp_str && !strcmp(tmp_str, stropts[i]))
	printf(" (current)");
	}
	printf("\n");
	g_free(stropts);
	g_free(tmp_str);
	g_variant_unref(gvar);

	} else if (srci->datatype == SR_T_UINT64_RANGE) {
	printf(" %s: ", srci->id);
	if (sr_config_list(sdi->driver, sdi, channel_group, key,
	&gvar_list) != SR_OK) {
	printf("\n");
	continue;
	}

	if (sr_config_get(sdi->driver, sdi, channel_group, key, &gvar) == SR_OK) {
	g_variant_get(gvar, "(tt)", &cur_low, &cur_high);
	g_variant_unref(gvar);
	} else {
	cur_low = 0;
	cur_high = 0;
	}

	num_elements = g_variant_n_children(gvar_list);
	for (i = 0; i < num_elements; i++) {
	gvar = g_variant_get_child_value(gvar_list, i);
	g_variant_get(gvar, "(tt)", &low, &high);
	g_variant_unref(gvar);
	if (i)
	printf(", ");
	printf("%"PRIu64"-%"PRIu64, low, high);
	if (low == cur_low && high == cur_high)
	printf(" (current)");
	}
	printf("\n");
	g_variant_unref(gvar_list);

	} else if (srci->datatype == SR_T_BOOL) {
	printf(" %s: ", srci->id);
	if (sr_config_get(sdi->driver, sdi, channel_group, key,
	&gvar) == SR_OK) {
	if (g_variant_get_boolean(gvar))
	printf("on (current), off\n");
	else
	printf("on, off (current)\n");
	g_variant_unref(gvar);
	} else
	printf("on, off\n");

	} else if (srci->datatype == SR_T_DOUBLE_RANGE) {
	printf(" %s: ", srci->id);
	if (sr_config_list(sdi->driver, sdi, channel_group, key,
	&gvar_list) != SR_OK) {
	printf("\n");
	continue;
	}

	if (sr_config_get(sdi->driver, sdi, channel_group, key, &gvar) == SR_OK) {
	g_variant_get(gvar, "(dd)", &dcur_low, &dcur_high);
	g_variant_unref(gvar);
	} else {
	dcur_low = 0;
	dcur_high = 0;
	}

	num_elements = g_variant_n_children(gvar_list);
	for (i = 0; i < num_elements; i++) {
	gvar = g_variant_get_child_value(gvar_list, i);
	g_variant_get(gvar, "(dd)", &dlow, &dhigh);
	g_variant_unref(gvar);
	if (i)
	printf(", ");
	printf("%.1f-%.1f", dlow, dhigh);
	if (dlow == dcur_low && dhigh == dcur_high)
	printf(" (current)");
	}
	printf("\n");
	g_variant_unref(gvar_list);

	} else if (srci->datatype == SR_T_FLOAT) {
	printf(" %s: ", srci->id);
	if (sr_config_get(sdi->driver, sdi, channel_group, key,
	&gvar) == SR_OK) {
	printf("%f\n", g_variant_get_double(gvar));
	g_variant_unref(gvar);
	} else
	printf("\n");

	} else if (srci->datatype == SR_T_RATIONAL_PERIOD
	\|\| srci->datatype == SR_T_RATIONAL_VOLT) {
	printf(" %s", srci->id);
	if (sr_config_get(sdi->driver, sdi, channel_group, key,
	&gvar) == SR_OK) {
	g_variant_get(gvar, "(tt)", &cur_p, &cur_q);
	g_variant_unref(gvar);
	} else
	cur_p = cur_q = 0;

	if (sr_config_list(sdi->driver, sdi, channel_group,
	key, &gvar_list) != SR_OK) {
	printf("\n");
	continue;
	}
	printf(" - supported values:\n");
	num_elements = g_variant_n_children(gvar_list);
	for (i = 0; i < num_elements; i++) {
	gvar = g_variant_get_child_value(gvar_list, i);
	g_variant_get(gvar, "(tt)", &p, &q);
	if (srci->datatype == SR_T_RATIONAL_PERIOD)
	s = sr_period_string(p * q);
	else
	s = sr_voltage_string(p, q);
	printf(" %s", s);
	g_free(s);
	if (p == cur_p && q == cur_q)
	printf(" (current)");
	printf("\n");
	}
	g_variant_unref(gvar_list);

	} else {

	/* Everything else */
	printf(" %s\n", srci->id);
	}
	}
	g_variant_unref(gvar_opts);

	sr_dev_close(sdi);

	}

	#ifdef HAVE_SRD
	void show_pd_detail(void)
	{
	struct srd_decoder *dec;
	struct srd_decoder_option *o;
	struct srd_channel *pdch;
	struct srd_decoder_annotation_row *r;
	GSList l, ll, *ol;
	int idx;
	char pdtokens, pdtok, optsep, ann, val, *doc;

	pdtokens = g_strsplit(opt_pds, ",", -1);
	for (pdtok = pdtokens; *pdtok; pdtok++) {
	/* Strip options. */
	if ((optsep = strchr(*pdtok, ':')))
	*optsep = '\0';
	if (!(dec = srd_decoder_get_by_id(*pdtok))) {
	g_critical("Protocol decoder %s not found.", *pdtok);
	return;
	}
	printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
	dec->id, dec->name, dec->longname, dec->desc);
	printf("License: %s\n", dec->license);
	printf("Annotation classes:\n");
	if (dec->annotations) {
	for (l = dec->annotations; l; l = l->next) {
	ann = l->data;
	printf("- %s: %s\n", ann[0], ann[1]);
	}
	} else {
	printf("None.\n");
	}
	printf("Annotation rows:\n");
	if (dec->annotation_rows) {
	for (l = dec->annotation_rows; l; l = l->next) {
	r = l->data;
	printf("- %s (%s): ", r->id, r->desc);
	for (ll = r->ann_classes; ll; ll = ll->next) {
	idx = GPOINTER_TO_INT(ll->data);
	ann = g_slist_nth_data(dec->annotations, idx);
	printf("%s", ann[0]);
	if (ll->next)
	printf(", ");
	}
	printf("\n");
	}
	} else {
	printf("None.\n");
	}
	printf("Required channels:\n");
	if (dec->channels) {
	for (l = dec->channels; l; l = l->next) {
	pdch = l->data;
	printf("- %s (%s): %s\n",
	pdch->id, pdch->name, pdch->desc);
	}
	} else {
	printf("None.\n");
	}
	printf("Optional channels:\n");
	if (dec->opt_channels) {
	for (l = dec->opt_channels; l; l = l->next) {
	pdch = l->data;
	printf("- %s (%s): %s\n",
	pdch->id, pdch->name, pdch->desc);
	}
	} else {
	printf("None.\n");
	}
	printf("Options:\n");
	if (dec->options) {
	for (l = dec->options; l; l = l->next) {
	o = l->data;
	printf("- %s: %s (", o->id, o->desc);
	for (ol = o->values; ol; ol = ol->next) {
	val = g_variant_print(ol->data, FALSE);
	printf("%s, ", val);
	g_free(val);
	}
	val = g_variant_print(o->def, FALSE);
	printf("default %s)\n", val);
	g_free(val);
	}
	} else {
	printf("None.\n");
	}
	if ((doc = srd_decoder_doc_get(dec))) {
	printf("Documentation:\n%s\n",
	doc[0] == '\n' ? doc + 1 : doc);
	g_free(doc);
	}
	}

	g_strfreev(pdtokens);
	}
	#endif

	void show_input(void)
	{
	const struct sr_input_module *imod;
	const struct sr_option **opts;
	GSList *l;
	int i;
	char s, *tok;

	tok = g_strsplit(opt_input_format, ":", 0);
	if (!tok[0] \|\| !(imod = sr_input_find(tok[0])))
	g_critical("Input module '%s' not found.", opt_input_format);

	printf("ID: %s\nName: %s\n", sr_input_id_get(imod),
	sr_input_name_get(imod));
	printf("Description: %s\n", sr_input_description_get(imod));
	if ((opts = sr_input_options_get(imod))) {
	printf("Options:\n");
	for (i = 0; opts[i]; i++) {
	printf(" %s: %s", opts[i]->id, opts[i]->desc);
	if (opts[i]->def) {
	s = g_variant_print(opts[i]->def, FALSE);
	printf(" (default %s", s);
	g_free(s);
	if (opts[i]->values) {
	printf(", possible values ");
	for (l = opts[i]->values; l; l = l->next) {
	s = g_variant_print((GVariant *)l->data, FALSE);
	printf("%s%s", s, l->next ? ", " : "");
	g_free(s);
	}
	}
	printf(")");
	}
	printf("\n");
	}
	sr_input_options_free(opts);
	}
	g_strfreev(tok);
	}

	void show_output(void)
	{
	const struct sr_output_module *omod;
	const struct sr_option **opts;
	GSList *l;
	int i;
	char s, *tok;

	tok = g_strsplit(opt_output_format, ":", 0);
	if (!tok[0] \|\| !(omod = sr_output_find(tok[0])))
	g_critical("Output module '%s' not found.", opt_output_format);

	printf("ID: %s\nName: %s\n", sr_output_id_get(omod),
	sr_output_name_get(omod));
	printf("Description: %s\n", sr_output_description_get(omod));
	if ((opts = sr_output_options_get(omod))) {
	printf("Options:\n");
	for (i = 0; opts[i]; i++) {
	printf(" %s: %s", opts[i]->id, opts[i]->desc);
	if (opts[i]->def) {
	s = g_variant_print(opts[i]->def, FALSE);
	printf(" (default %s", s);
	g_free(s);
	if (opts[i]->values) {
	printf(", possible values ");
	for (l = opts[i]->values; l; l = l->next) {
	s = g_variant_print((GVariant *)l->data, FALSE);
	printf("%s%s", s, l->next ? ", " : "");
	g_free(s);
	}
	}
	printf(")");
	}
	printf("\n");
	}
	sr_output_options_free(opts);
	}
	g_strfreev(tok);
	}