ctf: add internal ctf_metadata_decoder_get_trace_class_uuid()

[babeltrace.git] / src / plugins / ctf / common / metadata / decoder.c

diff --git a/src/plugins/ctf/common/metadata/decoder.c b/src/plugins/ctf/common/metadata/decoder.c
index 17b2aa4bd211be1474d4d7da288207f7cc7fc2a7..7407ad339dbf927bce3f741f29e61ac6782a8a64 100644 (file)
--- a/src/plugins/ctf/common/metadata/decoder.c
+++ b/src/plugins/ctf/common/metadata/decoder.c
@@ -406,3 +406,80 @@ int ctf_metadata_decoder_get_uuid(struct ctf_metadata_decoder *mdec,
 end:
        return ret;
 }
+
+static
+enum ctf_metadata_decoder_status find_uuid_in_trace_decl(
+               struct ctf_metadata_decoder *mdec, struct ctf_node *trace_node,
+               bt_uuid_t uuid)
+{
+       enum ctf_metadata_decoder_status status =
+               CTF_METADATA_DECODER_STATUS_OK;
+       struct ctf_node *entry_node;
+       struct bt_list_head *decl_list = &trace_node->u.trace.declaration_list;
+       char *left = NULL;
+
+       bt_list_for_each_entry(entry_node, decl_list, siblings) {
+               if (entry_node->type == NODE_CTF_EXPRESSION) {
+                       int ret;
+
+                       left = ctf_ast_concatenate_unary_strings(
+                               &entry_node->u.ctf_expression.left);
+                       if (!left) {
+                               BT_COMP_LOGE("Cannot concatenate unary strings.");
+                               status = CTF_METADATA_DECODER_STATUS_ERROR;
+                               goto end;
+                       }
+
+                       if (strcmp(left, "uuid") == 0) {
+                               ret = ctf_ast_get_unary_uuid(
+                                       &entry_node->u.ctf_expression.right,
+                                       uuid, mdec->config.log_level,
+                                       mdec->config.self_comp);
+                               if (ret) {
+                                       BT_COMP_LOGE("Invalid trace's `uuid` attribute.");
+                                       status = CTF_METADATA_DECODER_STATUS_ERROR;
+                                       goto end;
+                               }
+
+                               goto end;
+                       }
+
+                       g_free(left);
+                       left = NULL;
+               }
+       }
+
+       status = CTF_METADATA_DECODER_STATUS_NONE;
+
+end:
+       g_free(left);
+       return status;
+}
+
+BT_HIDDEN
+enum ctf_metadata_decoder_status ctf_metadata_decoder_get_trace_class_uuid(
+               struct ctf_metadata_decoder *mdec, bt_uuid_t uuid)
+{
+       enum ctf_metadata_decoder_status status =
+               CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+       struct ctf_node *root_node = &mdec->scanner->ast->root;
+       struct ctf_node *trace_node;
+
+       if (!root_node) {
+               status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+               goto end;
+       }
+
+       trace_node =
+               bt_list_entry(root_node->u.root.trace.next,
+                       struct ctf_node, siblings);
+       if (!trace_node) {
+               status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+               goto end;
+       }
+
+       status = find_uuid_in_trace_decl(mdec, trace_node, uuid);
+
+end:
+       return status;
+}