iio_attr: enable code gen for local contexts

Now that we have the uri in the context, we use it, which simplifies the
codegen, and ensures that things work with both local and remote contexts.

This fixes #529

Signed-off-by: Robin Getz <[email protected]>

Author: rgetz

tests/gen_code.c

@@ -163,7 +163,11 @@ void gen_context (const char *uri_in)
 	if (!fd)
 		return;
 
-	uri = cmn_strndup(uri_in, NAME_MAX);
+	if (uri_in)
+		uri = cmn_strndup(uri_in, NAME_MAX);
+	else
+		uri = cmn_strndup("unknown:", NAME_MAX);
+
 	if (lang == C_LANG) {
 		fprintf(fd, "\t/* Create IIO Context */\n"
 		    "\tIIO_ASSERT(ctx = iio_create_context_from_uri(\"%s\"));\n\n", uri);
@@ -289,7 +293,7 @@ void gen_function(const char* prefix, const char* target,
 			prefix, rw, target, attr);
 		fprintf(fd, "\t *******************************************************************/\n");
 		if (wbuf) {
-			fprintf(fd, "\tprintf(\"Wrote %%li bytes\\n\", ret);\n\n");
+			fprintf(fd, "\tprintf(\"Wrote %%zi bytes\\n\", ret);\n\n");
 		} else {
 			fprintf(fd, "\tprintf(\"%s : %%s\\n\", buf);\n\n", attr);
 		}

tests/iio_attr.c

@@ -554,6 +554,7 @@ int main(int argc, char **argv)
 
 	if (gen_code) {
 		gen_start(gen_file);
+		gen_context(iio_context_get_attr_value(ctx, "uri"));
 	}
 
 	if (search_context) {

tests/iio_common.c

@@ -70,9 +70,7 @@ char *cmn_strndup(const char *str, size_t n)
 #endif
 }
 
-
-
-struct iio_context * autodetect_context(bool rtn, bool gen_code, const char * name, const char * scan)
+struct iio_context * autodetect_context(bool rtn, const char * name, const char * scan)
 {
 	struct iio_scan_context *scan_ctx;
 	struct iio_context_info **info;
@@ -104,8 +102,6 @@ struct iio_context * autodetect_context(bool rtn, bool gen_code, const char * na
 		printf("Using auto-detected IIO context at URI \"%s\"\n",
 		iio_context_info_get_uri(info[0]));
 		ctx = iio_create_context_from_uri(iio_context_info_get_uri(info[0]));
-		if (gen_code)
-			gen_context(iio_context_info_get_uri(info[0]));
 	} else {
 		if (rtn) {
 			out = stderr;
@@ -285,10 +281,10 @@ struct iio_context * handle_common_opts(char * name, int argc, char * const argv
 	opterr = 1;
 
 	if (do_scan) {
-		autodetect_context(false, false, name, arg);
+		autodetect_context(false, name, arg);
 		exit(0);
 	} else if (detect_context)
-		ctx = autodetect_context(true, false, name, arg);
+		ctx = autodetect_context(true, name, arg);
 	else if (!arg && backend != IIO_LOCAL)
 		fprintf(stderr, "argument parsing error\n");
 	else if (backend == IIO_XML)

tests/iio_common.h

@@ -42,7 +42,7 @@ enum backend {
 void * xmalloc(size_t n, const char *name);
 char *cmn_strndup(const char *str, size_t n);
 
-struct iio_context * autodetect_context(bool rtn, bool gen_code, const char *name, const char *scan);
+struct iio_context * autodetect_context(bool rtn, const char *name, const char *scan);
 unsigned long int sanitize_clamp(const char *name, const char *argv,
 	uint64_t min, uint64_t max);
 

tests/iio_info.c

@@ -93,7 +93,7 @@ int main(int argc, char **argv)
 				optind++;
 			break;
 		case 's':
-			autodetect_context(false, false, MY_NAME, NULL);
+			autodetect_context(false, MY_NAME, NULL);
 			return EXIT_SUCCESS;
 		case '?':
 			printf("Unknown argument '%c'\n", c);