readchild.c

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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
 *
 *     http://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 <stdlib.h>
 
#include "apr_file_io.h"
 
int main(int argc, char *argv[])
{
    apr_file_t *in, *out;
    apr_size_t nbytes, total_bytes;
    apr_pool_t *p;
    char buf[128];
    apr_status_t rv;
    
    apr_initialize();
    atexit(apr_terminate);
    apr_pool_create(&p, NULL);
 
    apr_file_open_stdin(&in, p);
    apr_file_open_stdout(&out, p);
 
    total_bytes = 0;
    nbytes = sizeof(buf);
    while ((rv = apr_file_read(in, buf, &nbytes)) == APR_SUCCESS) {
        total_bytes += nbytes;
        nbytes = sizeof(buf);
    }
 
    apr_file_printf(out, "%" APR_SIZE_T_FMT " bytes were read\n",
                    total_bytes);
    return 0;
}