1 files changed, 108 insertions, 0 deletions
diff --git a/spa/plugins/support/log-patterns.c b/spa/plugins/support/log-patterns.c
new file mode 100644
index 0000000..4a35b1e
--- /dev/null
+++ b/spa/plugins/support/log-patterns.c
@@ -0,0 +1,108 @@
+/* Spa
+ *
+ * Copyright © 2021 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <fnmatch.h>
+
+#include <spa/support/log.h>
+#include <spa/utils/list.h>
+#include <spa/utils/json.h>
+
+#include "log-patterns.h"
+
+struct support_log_pattern {
+	struct spa_list link;
+	enum spa_log_level level;
+	char pattern[];
+};
+
+void
+support_log_topic_init(struct spa_list *patterns, enum spa_log_level default_level,
+		       struct spa_log_topic *t)
+{
+	enum spa_log_level level = default_level;
+	const char *topic = t->topic;
+	struct support_log_pattern *pattern;
+
+	spa_list_for_each(pattern, patterns, link) {
+		if (fnmatch(pattern->pattern, topic, 0) != 0)
+			continue;
+		level = pattern->level;
+		t->has_custom_level = true;
+	}
+
+	t->level = level;
+}
+
+int
+support_log_parse_patterns(struct spa_list *patterns, const char *jsonstr)
+{
+	struct spa_json iter, array, elem;
+	int res = 0;
+
+	spa_json_init(&iter, jsonstr, strlen(jsonstr));
+
+	if (spa_json_enter_array(&iter, &array) < 0)
+		return -EINVAL;
+
+	while (spa_json_enter_object(&array, &elem) > 0) {
+		char pattern[512] = {0};
+
+		while (spa_json_get_string(&elem, pattern, sizeof(pattern)) > 0) {
+			struct support_log_pattern *p;
+			const char *val;
+			int len;
+			int lvl;
+
+			if ((len = spa_json_next(&elem, &val)) <= 0)
+				break;
+
+			if (!spa_json_is_int(val, len))
+				break;
+
+			if ((res = spa_json_parse_int(val, len, &lvl)) < 0)
+				break;
+
+			SPA_CLAMP(lvl, SPA_LOG_LEVEL_NONE, SPA_LOG_LEVEL_TRACE);
+
+			p = calloc(1, sizeof(*p) + strlen(pattern) + 1);
+			p->level = lvl;
+			strcpy(p->pattern, pattern);
+			spa_list_append(patterns, &p->link);
+		}
+	}
+
+	return res;
+}
+
+void
+support_log_free_patterns(struct spa_list *patterns)
+{
+	struct support_log_pattern *p;
+
+	spa_list_consume(p, patterns, link) {
+		spa_list_remove(&p->link);
+		free(p);
+	}
+}