1 files changed, 56 insertions, 0 deletions
diff --git a/misc-utils/lsfd-counter.c b/misc-utils/lsfd-counter.c
new file mode 100644
index 0000000..55f0fde
--- /dev/null
+++ b/misc-utils/lsfd-counter.c
@@ -0,0 +1,56 @@
+/*
+ * lsfd-counter.c - counter implementation used in --summary option
+ *
+ * Copyright (C) 2021 Red Hat, Inc.
+ * Copyright (C) 2021 Masatake YAMATO <yamato@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+#include "lsfd-counter.h"
+
+#include "xalloc.h"
+
+struct lsfd_counter {
+	char *name;
+	size_t value;
+	struct lsfd_filter *filter;
+};
+
+struct lsfd_counter *lsfd_counter_new(const char *const name, struct lsfd_filter *filter)
+{
+	struct lsfd_counter *counter = xmalloc(sizeof(struct lsfd_counter));
+
+	counter->name = xstrdup(name);
+	counter->value = 0;
+	counter->filter = filter;
+
+	return counter;
+}
+
+void lsfd_counter_free(struct lsfd_counter *counter)
+{
+	lsfd_filter_free(counter->filter);
+	free(counter->name);
+	free(counter);
+}
+
+bool lsfd_counter_accumulate(struct lsfd_counter *counter, struct libscols_line *ln)
+{
+	if (lsfd_filter_apply(counter->filter, ln)) {
+		counter->value++;
+		return true;
+	}
+	return false;
+}
+
+const char *lsfd_counter_name(struct lsfd_counter *counter)
+{
+	return counter->name;
+}
+
+size_t lsfd_counter_value(struct lsfd_counter *counter)
+{
+	return counter->value;
+}