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/*
* 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 <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef _WIN32
#include <unistd.h>
#endif
#include "avro.h"
int process_file(const char *in_filename, const char *out_filename)
{
avro_file_reader_t reader;
avro_file_writer_t writer;
if (in_filename == NULL) {
if (avro_file_reader_fp(stdin, "<stdin>", 0, &reader)) {
fprintf(stderr, "Error opening <stdin>:\n %s\n",
avro_strerror());
return 1;
}
} else {
if (avro_file_reader(in_filename, &reader)) {
fprintf(stderr, "Error opening %s:\n %s\n",
in_filename, avro_strerror());
return 1;
}
}
avro_schema_t wschema;
wschema = avro_file_reader_get_writer_schema(reader);
/* Check that the reader schema is the same as the writer schema */
{
avro_schema_t oschema;
avro_file_reader_t oreader;
if (avro_file_reader(out_filename, &oreader)) {
fprintf(stderr, "Error opening %s:\n %s\n",
out_filename, avro_strerror());
avro_file_reader_close(reader);
return 1;
}
oschema = avro_file_reader_get_writer_schema(oreader);
if (avro_schema_equal(oschema, wschema) == 0) {
fprintf(stderr, "Error: reader and writer schema are not equal.\n");
avro_file_reader_close(oreader);
avro_file_reader_close(reader);
return 1;
}
avro_file_reader_close(oreader);
avro_schema_decref(oschema);
}
if (avro_file_writer_open(out_filename, &writer)) {
fprintf(stderr, "Error opening %s:\n %s\n",
out_filename, avro_strerror());
avro_file_reader_close(reader);
return 1;
}
avro_value_iface_t *iface;
avro_value_t value;
iface = avro_generic_class_from_schema(wschema);
avro_generic_value_new(iface, &value);
while (avro_file_reader_read_value(reader, &value) == 0) {
if (avro_file_writer_append_value(writer, &value)) {
fprintf(stderr, "Error writing to %s:\n %s\n",
out_filename, avro_strerror());
return 1;
}
avro_value_reset(&value);
}
avro_file_reader_close(reader);
avro_file_writer_close(writer);
avro_value_decref(&value);
avro_value_iface_decref(iface);
avro_schema_decref(wschema);
return 0;
}
static void usage(void)
{
fprintf(stderr,
"Usage: avroappend [<input avro file>] <output avro file>\n");
}
static int check_filenames(const char *in_filename, const char *out_filename)
{
if (in_filename == NULL) {
return 0;
}
struct stat in_stat;
struct stat out_stat;
if (stat(in_filename, &in_stat) == -1) {
fprintf(stderr, "stat error on %s: %s\n", in_filename, strerror(errno));
return 2;
}
if (stat(out_filename, &out_stat) == -1) {
fprintf(stderr, "stat error on %s: %s\n", out_filename, strerror(errno));
return 2;
}
if (in_stat.st_dev == out_stat.st_dev && in_stat.st_ino == out_stat.st_ino) {
return 1;
}
return 0;
}
int main(int argc, char **argv)
{
char *in_filename;
char *out_filename;
argc--;
argv++;
if (argc == 2) {
in_filename = argv[0];
out_filename = argv[1];
} else if (argc == 1) {
in_filename = NULL;
out_filename = argv[0];
} else {
fprintf(stderr, "Not enough arguments\n\n");
usage();
exit(1);
}
int ret = check_filenames(in_filename, out_filename);
if (ret == 1) {
fprintf(stderr, "Files are the same.\n");
}
if (ret > 0) {
exit(1);
}
exit(process_file(in_filename, out_filename));
}
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