X-Git-Url: https://sigrok.org/gitweb/?p=sigrok-cli.git;a=blobdiff_plain;f=show.c;h=9491110bdcfdbb82d1c0f469a02e47d043fb0875;hp=ca6cb1188444a213126f0f7bd83345a742c31d86;hb=198182cc092b56a005e8990057bffb99794ec797;hpb=783e263e581ed7321ca4bdc1ab7a4fafd2100507

diff --git a/show.c b/show.c
index ca6cb11..9491110 100644
--- a/show.c
+++ b/show.c
@@ -17,9 +17,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "sigrok-cli.h"
+#include <config.h>
 #include <glib.h>
 #include <string.h>
+#include "sigrok-cli.h"
 
 static gint sort_inputs(gconstpointer a, gconstpointer b)
 {
@@ -33,6 +34,12 @@ static gint sort_outputs(gconstpointer a, gconstpointer b)
 			sr_output_id_get((struct sr_output_module *)b));
 }
 
+static gint sort_transforms(gconstpointer a, gconstpointer b)
+{
+	return strcmp(sr_transform_id_get((struct sr_transform_module *)a),
+			sr_transform_id_get((struct sr_transform_module *)b));
+}
+
 static gint sort_drivers(gconstpointer a, gconstpointer b)
 {
 	const struct sr_dev_driver *sdda = a, *sddb = b;
@@ -50,10 +57,75 @@ static gint sort_pds(gconstpointer a, gconstpointer b)
 #endif
 
 void show_version(void)
+{
+	GString *s;
+	GSList *l, *l_orig, *m;
+	char *str;
+	const char *lib, *version;
+
+	printf("sigrok-cli %s\n\n", SC_PACKAGE_VERSION_STRING);
+
+	printf("Libraries and features:\n");
+
+	printf("- libsigrok %s/%s (rt: %s/%s).\n",
+		SR_PACKAGE_VERSION_STRING, SR_LIB_VERSION_STRING,
+		sr_package_version_string_get(), sr_lib_version_string_get());
+
+	s = g_string_sized_new(200);
+	g_string_append(s, " - Libs:\n");
+	l_orig = sr_buildinfo_libs_get();
+	for (l = l_orig; l; l = l->next) {
+		m = l->data;
+		lib = m->data;
+		version = m->next->data;
+		g_string_append_printf(s, "  - %s %s\n", lib, version);
+		g_slist_free_full(m, g_free);
+	}
+	g_slist_free(l_orig);
+	s->str[s->len - 1] = '\0';
+	printf("%s\n", s->str);
+	g_string_free(s, TRUE);
+
+	str = sr_buildinfo_host_get();
+	printf("  - Host: %s.\n", str);
+	g_free(str);
+
+	str = sr_buildinfo_scpi_backends_get();
+	printf("  - SCPI backends: %s.\n", str);
+	g_free(str);
+
+#ifdef HAVE_SRD
+	printf("- libsigrokdecode %s/%s (rt: %s/%s).\n",
+		SRD_PACKAGE_VERSION_STRING, SRD_LIB_VERSION_STRING,
+		srd_package_version_string_get(), srd_lib_version_string_get());
+
+	s = g_string_sized_new(200);
+	g_string_append(s, " - Libs:\n");
+	l_orig = srd_buildinfo_libs_get();
+	for (l = l_orig; l; l = l->next) {
+		m = l->data;
+		lib = m->data;
+		version = m->next->data;
+		g_string_append_printf(s, "  - %s %s\n", lib, version);
+		g_slist_free_full(m, g_free);
+	}
+	g_slist_free(l_orig);
+	s->str[s->len - 1] = '\0';
+	printf("%s\n", s->str);
+	g_string_free(s, TRUE);
+
+	str = srd_buildinfo_host_get();
+	printf("  - Host: %s.\n", str);
+	g_free(str);
+#endif
+}
+
+void show_supported(void)
 {
 	struct sr_dev_driver **drivers, *driver;
 	const struct sr_input_module **inputs, *input;
 	const struct sr_output_module **outputs, *output;
+	const struct sr_transform_module **transforms, *transform;
 	const GSList *l;
 	GSList *sl;
 	int i;
@@ -61,17 +133,8 @@ void show_version(void)
 	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();
+	drivers = sr_driver_list(sr_ctx);
 	for (sl = NULL, i = 0; drivers[i]; i++)
 		sl = g_slist_append(sl, drivers[i]);
 	sl = g_slist_sort(sl, sort_drivers);
@@ -108,6 +171,19 @@ void show_version(void)
 	printf("\n");
 	g_slist_free(sl);
 
+	printf("Supported transform modules:\n");
+	transforms = sr_transform_list();
+	for (sl = NULL, i = 0; transforms[i]; i++)
+		sl = g_slist_append(sl, (gpointer)transforms[i]);
+	sl = g_slist_sort(sl, sort_transforms);
+	for (l = sl; l; l = l->next) {
+		transform = l->data;
+		printf("  %-20s %s\n", sr_transform_id_get(transform),
+				sr_transform_description_get(transform));
+	}
+	printf("\n");
+	g_slist_free(sl);
+
 #ifdef HAVE_SRD
 	if (srd_init(NULL) == SRD_OK) {
 		printf("Supported protocol decoders:\n");
@@ -135,33 +211,6 @@ static gint sort_channels(gconstpointer a, gconstpointer b)
 	return pa->index - pb->index;
 }
 
-static gboolean config_key_has_cap(const struct sr_dev_inst *sdi,
-	   struct sr_channel_group *cg, uint32_t key, uint32_t capability)
-{
-	struct sr_dev_driver *driver;
-	GVariant *gvar_opts;
-	const uint32_t *opts;
-	gsize num_opts, i;
-
-	driver = sr_dev_inst_driver_get(sdi);
-	if (sr_config_list(driver, sdi, cg, SR_CONF_DEVICE_OPTIONS,
-			&gvar_opts) != SR_OK)
-		return FALSE;
-
-	opts = g_variant_get_fixed_array(gvar_opts, &num_opts, sizeof(uint32_t));
-	for (i = 0; i < num_opts; i++) {
-		if ((opts[i] & SR_CONF_MASK) == key) {
-			if (opts[i] & capability)
-				return TRUE;
-			else
-				return FALSE;
-		}
-	}
-
-	return FALSE;
-}
-
-
 static void print_dev_line(const struct sr_dev_inst *sdi)
 {
 	struct sr_channel *ch;
@@ -179,8 +228,7 @@ static void print_dev_line(const struct sr_dev_inst *sdi)
 
 	s = g_string_sized_new(128);
 	g_string_assign(s, driver->name);
-	if (config_key_has_cap(sdi, NULL, SR_CONF_CONN, SR_CONF_GET)
-			&& sr_config_get(driver, sdi, NULL, SR_CONF_CONN, &gvar) == SR_OK) {
+	if (maybe_config_get(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);
@@ -231,39 +279,34 @@ void show_dev_list(void)
 
 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) {
+	const struct sr_key_info *srci;
+	GArray *opts;
+	guint i;
+
+	if ((opts = sr_dev_options(driver, NULL, NULL))) {
+		if (opts->len > 0) {
 			printf("Driver functions:\n");
-			for (i = 0; i < num_elements; i++) {
-				if (!(srci = sr_config_info_get(opts[i] & SR_CONF_MASK)))
+			for (i = 0; i < opts->len; i++) {
+				if (!(srci = sr_key_info_get(SR_KEY_CONFIG,
+						g_array_index(opts, uint32_t, i))))
 					continue;
 				printf("    %s\n", srci->name);
 			}
 		}
-		g_variant_unref(gvar_opts);
+		g_array_free(opts, TRUE);
 	}
 
-	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) {
+	if ((opts = sr_driver_scan_options_list(driver))) {
+		if (opts->len > 0) {
 			printf("Scan options:\n");
-			for (i = 0; i < num_elements; i++) {
-				if (!(srci = sr_config_info_get(opts[i] & SR_CONF_MASK)))
+			for (i = 0; i < opts->len; i++) {
+				if (!(srci = sr_key_info_get(SR_KEY_CONFIG,
+						g_array_index(opts, uint32_t, i))))
 					continue;
 				printf("    %s\n", srci->id);
 			}
 		}
-		g_variant_unref(gvar_opts);
+		g_array_free(opts, TRUE);
 	}
 }
 
@@ -271,19 +314,20 @@ void show_dev_detail(void)
 {
 	struct sr_dev_driver *driver_from_opt, *driver;
 	struct sr_dev_inst *sdi;
-	const struct sr_config_info *srci;
+	const struct sr_key_info *srci, *srmqi, *srmqfi;
 	struct sr_channel *ch;
 	struct sr_channel_group *channel_group, *cg;
 	GSList *devices, *cgl, *chl, *channel_groups;
-	GVariant *gvar_opts, *gvar_dict, *gvar_list, *gvar;
-	gsize num_opts, num_elements;
+	GVariant *gvar_dict, *gvar_list, *gvar;
+	gsize 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;
+	uint64_t tmp_uint64, mask, cur_low, cur_high, cur_p, cur_q;
+	GArray *opts;
 	const int32_t *int32;
-	uint32_t key, o;
-	unsigned int num_devices, i;
+	uint32_t key, o, cur_mq, mq;
+	uint64_t cur_mqflags, mqflags;
+	unsigned int num_devices, i, j;
 	char *tmp_str, *s, c;
 	const char **stropts;
 
@@ -316,13 +360,14 @@ void show_dev_detail(void)
 		return;
 	}
 
-	/* Selected channels and channel group may affect which options are
-	 * returned, or which values for them. */
+	/*
+	 * 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(driver, sdi, channel_group, SR_CONF_DEVICE_OPTIONS,
-			&gvar_opts) != SR_OK)
+	if (!(opts = sr_dev_options(driver, sdi, channel_group)))
 		/* Driver supports no device instance options. */
 		return;
 
@@ -348,14 +393,13 @@ void show_dev_detail(void)
 			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)))
+	for (o = 0; o < opts->len; o++) {
+		key = g_array_index(opts, uint32_t, o);
+		if (!(srci = sr_key_info_get(SR_KEY_CONFIG, key)))
 			continue;
 
 		if (key == SR_CONF_TRIGGER_MATCH) {
-			if (sr_config_list(driver, sdi, channel_group, key,
+			if (maybe_config_list(driver, sdi, channel_group, key,
 					&gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
@@ -364,7 +408,7 @@ void show_dev_detail(void)
 					&num_elements, sizeof(int32_t));
 			printf("    Supported triggers: ");
 			for (i = 0; i < num_elements; i++) {
-				switch(int32[i]) {
+				switch (int32[i]) {
 				case SR_TRIGGER_ZERO:
 					c = '0';
 					break;
@@ -396,25 +440,28 @@ void show_dev_detail(void)
 			printf("\n");
 			g_variant_unref(gvar_list);
 
-		} else if (key == SR_CONF_LIMIT_SAMPLES) {
-			/* If implemented in config_list(), this denotes the
+		} else if (key == SR_CONF_LIMIT_SAMPLES
+				&& (sr_dev_config_capabilities_list(sdi, NULL, key)
+					& SR_CONF_LIST)) {
+			/*
+			 * 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. */
+			 * are the low/high limits.
+			 */
 			if (sr_config_list(driver, sdi, channel_group, key,
-					&gvar) != SR_OK) {
-				continue;
+					&gvar) == SR_OK) {
+				g_variant_get(gvar, "(tt)", &low, &high);
+				g_variant_unref(gvar);
+				printf("    Maximum number of samples: %"PRIu64"\n", high);
 			}
-			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(driver, sdi, channel_group, SR_CONF_SAMPLERATE,
+			if (maybe_config_list(driver, sdi, channel_group, SR_CONF_SAMPLERATE,
 					&gvar_dict) != SR_OK) {
 				printf("\n");
 				continue;
@@ -455,16 +502,16 @@ void show_dev_detail(void)
 			g_variant_unref(gvar_dict);
 
 		} else if (srci->datatype == SR_T_UINT64) {
-			printf("    %s", srci->id);
+			printf("    %s: ", srci->id);
 			gvar = NULL;
-			if (sr_config_get(driver, sdi, channel_group, key,
+			if (maybe_config_get(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(driver, sdi, channel_group,
-					SR_CONF_BUFFERSIZE, &gvar_list) != SR_OK) {
+			if (maybe_config_list(driver, sdi, channel_group,
+					key, &gvar_list) != SR_OK) {
 				if (gvar) {
 					/* Can't list it, but we have a value to show. */
 					printf("%"PRIu64" (current)", tmp_uint64);
@@ -485,14 +532,14 @@ void show_dev_detail(void)
 
 		} else if (srci->datatype == SR_T_STRING) {
 			printf("    %s: ", srci->id);
-			if (sr_config_get(driver, sdi, channel_group, key,
+			if (maybe_config_get(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(driver, sdi, channel_group, key,
+			if (maybe_config_list(driver, sdi, channel_group, key,
 					&gvar) != SR_OK) {
 				if (tmp_str) {
 					/* Can't list it, but we have a value to show. */
@@ -518,13 +565,13 @@ void show_dev_detail(void)
 
 		} else if (srci->datatype == SR_T_UINT64_RANGE) {
 			printf("    %s: ", srci->id);
-			if (sr_config_list(driver, sdi, channel_group, key,
+			if (maybe_config_list(driver, sdi, channel_group, key,
 					&gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
 			}
 
-			if (sr_config_get(driver, sdi, channel_group, key, &gvar) == SR_OK) {
+			if (maybe_config_get(driver, sdi, channel_group, key, &gvar) == SR_OK) {
 				g_variant_get(gvar, "(tt)", &cur_low, &cur_high);
 				g_variant_unref(gvar);
 			} else {
@@ -548,7 +595,7 @@ void show_dev_detail(void)
 
 		} else if (srci->datatype == SR_T_BOOL) {
 			printf("    %s: ", srci->id);
-			if (sr_config_get(driver, sdi, channel_group, key,
+			if (maybe_config_get(driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				if (g_variant_get_boolean(gvar))
 					printf("on (current), off\n");
@@ -560,13 +607,13 @@ void show_dev_detail(void)
 
 		} else if (srci->datatype == SR_T_DOUBLE_RANGE) {
 			printf("    %s: ", srci->id);
-			if (sr_config_list(driver, sdi, channel_group, key,
+			if (maybe_config_list(driver, sdi, channel_group, key,
 					&gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
 			}
 
-			if (sr_config_get(driver, sdi, channel_group, key, &gvar) == SR_OK) {
+			if (maybe_config_get(driver, sdi, channel_group, key, &gvar) == SR_OK) {
 				g_variant_get(gvar, "(dd)", &dcur_low, &dcur_high);
 				g_variant_unref(gvar);
 			} else {
@@ -590,7 +637,7 @@ void show_dev_detail(void)
 
 		} else if (srci->datatype == SR_T_FLOAT) {
 			printf("    %s: ", srci->id);
-			if (sr_config_get(driver, sdi, channel_group, key,
+			if (maybe_config_get(driver, sdi, channel_group, key,
 					&gvar) == SR_OK) {
 				printf("%f\n", g_variant_get_double(gvar));
 				g_variant_unref(gvar);
@@ -600,14 +647,14 @@ void show_dev_detail(void)
 		} else if (srci->datatype == SR_T_RATIONAL_PERIOD
 				|| srci->datatype == SR_T_RATIONAL_VOLT) {
 			printf("    %s", srci->id);
-			if (sr_config_get(driver, sdi, channel_group, key,
+			if (maybe_config_get(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(driver, sdi, channel_group,
+			if (maybe_config_list(driver, sdi, channel_group,
 					key, &gvar_list) != SR_OK) {
 				printf("\n");
 				continue;
@@ -618,7 +665,7 @@ void show_dev_detail(void)
 				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);
+					s = sr_period_string(p, q);
 				else
 					s = sr_voltage_string(p, q);
 				printf("      %s", s);
@@ -629,20 +676,60 @@ void show_dev_detail(void)
 			}
 			g_variant_unref(gvar_list);
 
+		} else if (srci->datatype == SR_T_MQ) {
+			printf("    %s: ", srci->id);
+			if (maybe_config_get(driver, sdi, channel_group, key,
+					&gvar) == SR_OK
+					&& g_variant_is_of_type(gvar, G_VARIANT_TYPE_TUPLE)
+					&& g_variant_n_children(gvar) == 2) {
+				g_variant_get(gvar, "(ut)", &cur_mq, &cur_mqflags);
+				g_variant_unref(gvar);
+			} else
+				cur_mq = cur_mqflags = 0;
+
+			if (maybe_config_list(driver, sdi, channel_group,
+					key, &gvar_list) != SR_OK) {
+				printf("\n");
+				continue;
+			}
+			printf(" - supported measurements:\n");
+			num_elements = g_variant_n_children(gvar_list);
+			for (i = 0; i < num_elements; i++) {
+				printf("      ");
+				gvar = g_variant_get_child_value(gvar_list, i);
+				g_variant_get(gvar, "(ut)", &mq, &mqflags);
+				if ((srmqi = sr_key_info_get(SR_KEY_MQ, mq)))
+					printf("%s", srmqi->id);
+				else
+					printf("%d", mq);
+				for (j = 0, mask = 1; j < 32; j++, mask <<= 1) {
+					if (!(mqflags & mask))
+						continue;
+					if ((srmqfi = sr_key_info_get(SR_KEY_MQFLAGS, mqflags & mask)))
+						printf("/%s", srmqfi->id);
+					else
+						printf("/%" PRIu64, mqflags & mask);
+				}
+				if (mq == cur_mq && mqflags == cur_mqflags)
+					printf(" (current)");
+				printf("\n");
+			}
+			g_variant_unref(gvar_list);
+
 		} else {
 
 			/* Everything else */
 			printf("    %s\n", srci->id);
 		}
 	}
-	g_variant_unref(gvar_opts);
+	g_array_free(opts, TRUE);
 
 	sr_dev_close(sdi);
 
 }
 
 #ifdef HAVE_SRD
-void show_pd_detail(void)
+static void show_pd_detail_single(const char *pd)
 {
 	struct srd_decoder *dec;
 	struct srd_decoder_option *o;
@@ -650,9 +737,9 @@ void show_pd_detail(void)
 	struct srd_decoder_annotation_row *r;
 	GSList *l, *ll, *ol;
 	int idx;
-	char **pdtokens, **pdtok, *optsep, **ann, *val, *doc;
+	char **pdtokens, **pdtok, *optsep, **ann, **bin, *val, *doc, *str;
 
-	pdtokens = g_strsplit(opt_pds, ",", -1);
+	pdtokens = g_strsplit(pd, ",", -1);
 	for (pdtok = pdtokens; *pdtok; pdtok++) {
 		/* Strip options. */
 		if ((optsep = strchr(*pdtok, ':')))
@@ -664,6 +751,24 @@ void show_pd_detail(void)
 		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("Possible decoder input IDs:\n");
+		if (dec->inputs) {
+			for (l = dec->inputs; l; l = l->next) {
+				str = l->data;
+				printf("- %s\n", str);
+			}
+		} else {
+			printf("None.\n");
+		}
+		printf("Possible decoder output IDs:\n");
+		if (dec->outputs) {
+			for (l = dec->outputs; l; l = l->next) {
+				str = l->data;
+				printf("- %s\n", str);
+			}
+		} else {
+			printf("None.\n");
+		}
 		printf("Annotation classes:\n");
 		if (dec->annotations) {
 			for (l = dec->annotations; l; l = l->next) {
@@ -690,6 +795,15 @@ void show_pd_detail(void)
 		} else {
 			printf("None.\n");
 		}
+		printf("Binary classes:\n");
+		if (dec->binary) {
+			for (l = dec->binary; l; l = l->next) {
+				bin = l->data;
+				printf("- %s: %s\n", bin[0], bin[1]);
+			}
+		} else {
+			printf("None.\n");
+		}
 		printf("Required channels:\n");
 		if (dec->channels) {
 			for (l = dec->channels; l; l = l->next) {
@@ -736,6 +850,12 @@ void show_pd_detail(void)
 
 	g_strfreev(pdtokens);
 }
+
+void show_pd_detail(void)
+{
+	for (int i = 0; opt_pds[i]; i++)
+		show_pd_detail_single(opt_pds[i]);
+}
 #endif
 
 void show_input(void)
@@ -818,3 +938,42 @@ void show_output(void)
 	g_strfreev(tok);
 }
 
+void show_transform(void)
+{
+	const struct sr_transform_module *tmod;
+	const struct sr_option **opts;
+	GSList *l;
+	int i;
+	char *s, **tok;
+
+	tok = g_strsplit(opt_transform_module, ":", 0);
+	if (!tok[0] || !(tmod = sr_transform_find(tok[0])))
+		g_critical("Transform module '%s' not found.", opt_transform_module);
+
+	printf("ID: %s\nName: %s\n", sr_transform_id_get(tmod),
+			sr_transform_name_get(tmod));
+	printf("Description: %s\n", sr_transform_description_get(tmod));
+	if ((opts = sr_transform_options_get(tmod))) {
+		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_transform_options_free(opts);
+	}
+	g_strfreev(tok);
+}