/* 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 "apr_file_io.h"

#include "apr_strings.h"

#include "apr_lib.h"

#if APR_HAVE_STDLIB_H

#include <stdlib.h>

#endif

struct apr_file_printf_data {

    apr_vformatter_buff_t vbuff;

    apr_file_t *fptr;

    char *buf;

};

static int file_printf_flush(apr_vformatter_buff_t *buff)

{

    struct apr_file_printf_data *data = (struct apr_file_printf_data *)buff;

    if (apr_file_write_full(data->fptr, data->buf,

                            data->vbuff.curpos - data->buf, NULL)) {

        return -1;

    }

    data->vbuff.curpos = data->buf;

    return 0;

}

APR_DECLARE_NONSTD(int) apr_file_printf(apr_file_t *fptr,

                                        const char *format, ...)

{

    struct apr_file_printf_data data;

    va_list ap;

    int count;

    /* don't really need a HUGE_STRING_LEN anymore */

    data.buf = malloc(HUGE_STRING_LEN);

    if (data.buf == NULL) {

        return -1;

    }

    data.vbuff.curpos = data.buf;

    data.vbuff.endpos = data.buf + HUGE_STRING_LEN;

    data.fptr = fptr;

    va_start(ap, format);

    count = apr_vformatter(file_printf_flush,

                           (apr_vformatter_buff_t *)&data, format, ap);

    /* apr_vformatter does not call flush for the last bits */

    if (count >= 0) file_printf_flush((apr_vformatter_buff_t *)&data);

    va_end(ap);

    free(data.buf);

    return count;

}