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-rw-r--r--src/pluginlist.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/src/pluginlist.c b/src/pluginlist.c
new file mode 100644
index 0000000..61e4c4b
--- /dev/null
+++ b/src/pluginlist.c
@@ -0,0 +1,243 @@
+/* LibSLV2
+ * Copyright (C) 2006 Dave Robillard <drobilla@connect.carleton.ca>
+ *
+ * This library 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 library 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#define _XOPEN_SOURCE 500
+#include <rasqal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <dirent.h>
+#include <slv2/private_types.h>
+#include <slv2/types.h>
+#include <slv2/plugin.h>
+#include <slv2/pluginlist.h>
+#include "util.h"
+
+
+struct _PluginList*
+slv2_list_new()
+{
+ struct _PluginList* result = malloc(sizeof(struct _PluginList));
+ result->num_plugins = 0;
+ result->plugins = NULL;
+ return result;
+}
+
+
+void
+slv2_list_free(SLV2List list)
+{
+ list->num_plugins = 0;
+ free(list->plugins);
+ free(list);
+}
+
+
+void
+slv2_list_load_all(SLV2List list)
+{
+ assert(list != NULL);
+
+ char* slv2_path = getenv("LV2_PATH");
+
+ if (!slv2_path) {
+ slv2_path = "~/.lv2:/usr/local/lib/lv2:usr/lib/lv2";
+
+ printf("$LV2_PATH is unset. Using default path %s\n",
+ slv2_path);
+ }
+
+ slv2_list_load_path(list, slv2_path);
+}
+
+
+/* This is the parser for manifest.ttl */
+void
+slv2_list_load_bundle(SLV2List list,
+ const unsigned char* bundle_base_uri)
+{
+ // FIXME: ew
+ unsigned char* manifest_uri = malloc(
+ (strlen((char*)bundle_base_uri) + strlen("manifest.ttl") + 2) * sizeof(unsigned char));
+ memcpy(manifest_uri, bundle_base_uri, strlen((char*)bundle_base_uri)+1 * sizeof(unsigned char));
+ if (bundle_base_uri[strlen((char*)bundle_base_uri)-1] == '/')
+ strcat((char*)manifest_uri, (char*)"manifest.ttl");
+ else
+ strcat((char*)manifest_uri, (char*)"/manifest.ttl");
+
+ rasqal_init();
+ rasqal_query_results *results;
+ raptor_uri *base_uri = raptor_new_uri(manifest_uri);
+ rasqal_query *rq = rasqal_new_query((const char*)"sparql", (const uchar*)base_uri);
+
+ unsigned char* query_string =
+ U("PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> \n"
+ "PREFIX : <http://lv2plug.in/ontology#> \n\n"
+
+ "SELECT DISTINCT $plugin_uri $data_url $lib_url FROM <> WHERE { \n"
+ "$plugin_uri :binary $lib_url ; \n"
+ " rdfs:seeAlso $data_url . \n"
+ "} \n");
+
+ //printf("%s\n\n", query_string);
+
+ rasqal_query_prepare(rq, (const uchar*)query_string, base_uri);
+ results = rasqal_query_execute(rq);
+
+ while (!rasqal_query_results_finished(results)) {
+
+ // Create a new plugin
+ struct _Plugin* new_plugin = malloc(sizeof(struct _Plugin));
+ new_plugin->bundle_url = ustrdup(bundle_base_uri);
+
+ rasqal_literal* literal = NULL;
+
+ literal = rasqal_query_results_get_binding_value_by_name(results,
+ U("plugin_uri"));
+ if (literal)
+ new_plugin->plugin_uri = ustrdup(rasqal_literal_as_string(literal));
+
+ literal = rasqal_query_results_get_binding_value_by_name(results,
+ U("data_url"));
+ if (literal)
+ new_plugin->data_url = ustrdup(rasqal_literal_as_string(literal));
+
+ literal = rasqal_query_results_get_binding_value_by_name(results,
+ U("lib_url"));
+ if (literal)
+ new_plugin->lib_url = ustrdup(rasqal_literal_as_string(literal));
+
+ /* Add the plugin if it's valid */
+ if (new_plugin->lib_url && new_plugin->data_url && new_plugin->plugin_uri
+ && slv2_plugin_verify(new_plugin)) {
+ /* Yes, this is disgusting, but it doesn't seem there's a way to know
+ * how many matches there are before iterating over them */
+ list->num_plugins++;
+ list->plugins = realloc(list->plugins,
+ list->num_plugins * sizeof(struct _Plugin*));
+ list->plugins[list->num_plugins-1] = new_plugin;
+ }
+
+ rasqal_query_results_next(results);
+ }
+
+ rasqal_free_query_results(results);
+ rasqal_free_query(rq);
+ raptor_free_uri(base_uri);
+ rasqal_finish();
+
+ free(manifest_uri);
+}
+
+
+/* Add all the plugins found in dir to list.
+ * (Private helper function, not exposed in public API)
+ */
+void
+add_plugins_from_dir(SLV2List list, const char* dir)
+{
+ DIR* pdir = opendir(dir);
+ if (!pdir)
+ return;
+
+ struct dirent* pfile;
+ while ((pfile = readdir(pdir))) {
+ if (!strcmp(pfile->d_name, ".") || !strcmp(pfile->d_name, ".."))
+ continue;
+
+ char* bundle_path = (char*)ustrjoin(U(dir), U("/"), U(pfile->d_name), 0);
+ char* bundle_url = (char*)ustrjoin(U("file://"), U(dir), U("/"), U(pfile->d_name), 0);
+ DIR* bundle_dir = opendir(bundle_path);
+
+ if (bundle_dir != NULL) {
+ closedir(bundle_dir);
+
+ slv2_list_load_bundle(list, U(bundle_url));
+ //printf("Loaded bundle %s\n", bundle_url);
+ }
+
+ free(bundle_path);
+ }
+
+ closedir(pdir);
+}
+
+
+void
+slv2_list_load_path(SLV2List list,
+ const char* slv2_path)
+{
+
+ char* path = (char*)ustrjoin(U(slv2_path), U(":"), 0);
+
+ char* dir = path; // Pointer into path
+
+ // Go through string replacing ':' with '\0', using the substring,
+ // then replacing it with 'X' and moving on. eg strtok on crack.
+ while (strchr(path, ':') != NULL) {
+ char* delim = strchr(path, ':');
+ *delim = '\0';
+
+ add_plugins_from_dir(list, dir);
+
+ *delim = 'X';
+ dir = delim + 1;
+ }
+
+ //char* slv2_path = strdup(slv2
+
+ free(path);
+}
+
+
+unsigned long
+slv2_list_get_length(const SLV2List list)
+{
+ assert(list != NULL);
+ return list->num_plugins;
+}
+
+
+SLV2Plugin*
+slv2_list_get_plugin_by_uri(const SLV2List list, const unsigned char* uri)
+{
+ if (list->num_plugins > 0) {
+ assert(list->plugins != NULL);
+
+ for (unsigned long i=0; i < list->num_plugins; ++i)
+ if (!strcmp((char*)list->plugins[i]->plugin_uri, (char*)uri))
+ return list->plugins[i];
+ }
+
+ return NULL;
+}
+
+
+SLV2Plugin*
+slv2_list_get_plugin_by_index(const SLV2List list, unsigned long index)
+{
+ if (list->num_plugins == 0)
+ return NULL;
+
+ assert(list->plugins != NULL);
+
+ return (index < list->num_plugins) ? list->plugins[index] : NULL;
+}
+
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