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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 "avro_private.h"
#include "avro/errors.h"
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "encoding.h"
#include "schema.h"
static int skip_array(avro_reader_t reader, const avro_encoding_t * enc,
struct avro_array_schema_t *writers_schema)
{
int rval;
int64_t i;
int64_t block_count;
int64_t block_size;
check_prefix(rval, enc->read_long(reader, &block_count),
"Cannot read array block count: ");
while (block_count != 0) {
if (block_count < 0) {
block_count = block_count * -1;
check_prefix(rval, enc->read_long(reader, &block_size),
"Cannot read array block size: ");
}
for (i = 0; i < block_count; i++) {
check_prefix(rval, avro_skip_data(reader, writers_schema->items),
"Cannot skip array element: ");
}
check_prefix(rval, enc->read_long(reader, &block_count),
"Cannot read array block count: ");
}
return 0;
}
static int skip_map(avro_reader_t reader, const avro_encoding_t * enc,
struct avro_map_schema_t *writers_schema)
{
int rval;
int64_t i, block_count;
check_prefix(rval, enc->read_long(reader, &block_count),
"Cannot read map block count: ");
while (block_count != 0) {
int64_t block_size;
if (block_count < 0) {
block_count = block_count * -1;
check_prefix(rval, enc->read_long(reader, &block_size),
"Cannot read map block size: ");
}
for (i = 0; i < block_count; i++) {
check_prefix(rval, enc->skip_string(reader),
"Cannot skip map key: ");
check_prefix(rval,
avro_skip_data(reader,
avro_schema_to_map(writers_schema)->
values),
"Cannot skip map value: ");
}
check_prefix(rval, enc->read_long(reader, &block_count),
"Cannot read map block count: ");
}
return 0;
}
static int skip_union(avro_reader_t reader, const avro_encoding_t * enc,
struct avro_union_schema_t *writers_schema)
{
int rval;
int64_t index;
avro_schema_t branch_schema;
check_prefix(rval, enc->read_long(reader, &index),
"Cannot read union discriminant: ");
branch_schema = avro_schema_union_branch(&writers_schema->obj, index);
if (!branch_schema) {
return EILSEQ;
}
return avro_skip_data(reader, branch_schema);
}
static int skip_record(avro_reader_t reader, const avro_encoding_t * enc,
struct avro_record_schema_t *writers_schema)
{
int rval;
long i;
AVRO_UNUSED(enc);
for (i = 0; i < writers_schema->fields->num_entries; i++) {
avro_schema_t field_schema;
field_schema = avro_schema_record_field_get_by_index
(&writers_schema->obj, i);
check_prefix(rval, avro_skip_data(reader, field_schema),
"Cannot skip record field: ");
}
return 0;
}
int avro_skip_data(avro_reader_t reader, avro_schema_t writers_schema)
{
check_param(EINVAL, reader, "reader");
check_param(EINVAL, is_avro_schema(writers_schema), "writer schema");
int rval = EINVAL;
const avro_encoding_t *enc = &avro_binary_encoding;
switch (avro_typeof(writers_schema)) {
case AVRO_NULL:
rval = enc->skip_null(reader);
break;
case AVRO_BOOLEAN:
rval = enc->skip_boolean(reader);
break;
case AVRO_STRING:
rval = enc->skip_string(reader);
break;
case AVRO_INT32:
rval = enc->skip_int(reader);
break;
case AVRO_INT64:
rval = enc->skip_long(reader);
break;
case AVRO_FLOAT:
rval = enc->skip_float(reader);
break;
case AVRO_DOUBLE:
rval = enc->skip_double(reader);
break;
case AVRO_BYTES:
rval = enc->skip_bytes(reader);
break;
case AVRO_FIXED:
rval =
avro_skip(reader,
avro_schema_to_fixed(writers_schema)->size);
break;
case AVRO_ENUM:
rval = enc->skip_long(reader);
break;
case AVRO_ARRAY:
rval =
skip_array(reader, enc,
avro_schema_to_array(writers_schema));
break;
case AVRO_MAP:
rval =
skip_map(reader, enc, avro_schema_to_map(writers_schema));
break;
case AVRO_UNION:
rval =
skip_union(reader, enc,
avro_schema_to_union(writers_schema));
break;
case AVRO_RECORD:
rval =
skip_record(reader, enc,
avro_schema_to_record(writers_schema));
break;
case AVRO_LINK:
rval =
avro_skip_data(reader,
(avro_schema_to_link(writers_schema))->to);
break;
}
return rval;
}
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