1 files changed, 127 insertions, 0 deletions
diff --git a/fluent-bit/lib/avro/src/avrocat.c b/fluent-bit/lib/avro/src/avrocat.c
new file mode 100644
index 000000000..134ea8e64
--- /dev/null
+++ b/fluent-bit/lib/avro/src/avrocat.c
@@ -0,0 +1,127 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.  See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "avro.h"
+#include "avro_private.h"
+
+
+/*-- PROCESSING A FILE --*/
+
+static void
+process_file(const char *filename)
+{
+	avro_file_reader_t  reader;
+	FILE *fp;
+	int  should_close;
+
+	if (filename == NULL) {
+		fp = stdin;
+		filename = "<stdin>";
+		should_close = 0;
+	} else {
+		fp = fopen(filename, "rb");
+		should_close = 1;
+
+		if (fp == NULL) {
+			fprintf(stderr, "Error opening %s:\n  %s\n",
+				filename, strerror(errno));
+			exit(1);
+		}
+	}
+
+	if (avro_file_reader_fp(fp, filename, 0, &reader)) {
+		fprintf(stderr, "Error opening %s:\n  %s\n",
+			filename, avro_strerror());
+		if (should_close) {
+			fclose(fp);
+		}
+		exit(1);
+	}
+
+	avro_schema_t  wschema;
+	avro_value_iface_t  *iface;
+	avro_value_t  value;
+
+	wschema = avro_file_reader_get_writer_schema(reader);
+	iface = avro_generic_class_from_schema(wschema);
+	avro_generic_value_new(iface, &value);
+
+	int rval;
+
+	while ((rval = avro_file_reader_read_value(reader, &value)) == 0) {
+		char  *json;
+
+		if (avro_value_to_json(&value, 1, &json)) {
+			fprintf(stderr, "Error converting value to JSON: %s\n",
+				avro_strerror());
+		} else {
+			printf("%s\n", json);
+			free(json);
+		}
+
+		avro_value_reset(&value);
+	}
+
+	// If it was not an EOF that caused it to fail,
+	// print the error.
+	if (rval != EOF) {
+		fprintf(stderr, "Error: %s\n", avro_strerror());
+	}
+
+	avro_file_reader_close(reader);
+	avro_value_decref(&value);
+	avro_value_iface_decref(iface);
+	avro_schema_decref(wschema);
+
+	if (should_close) {
+		fclose(fp);
+	}
+}
+
+
+/*-- MAIN PROGRAM --*/
+
+static void usage(void)
+{
+	fprintf(stderr,
+		"Usage: avrocat <avro data file>\n");
+}
+
+
+int main(int argc, char **argv)
+{
+	char  *data_filename;
+
+	if (argc == 2) {
+		data_filename = argv[1];
+	} else if (argc == 1) {
+		data_filename = NULL;
+	} else {
+		fprintf(stderr, "Can't read from multiple input files.\n");
+		usage();
+		exit(1);
+	}
+
+	/* Process the data file */
+	process_file(data_filename);
+	return 0;
+}