/*
 * 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 <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <platforms/axutil_platform_auto_sense.h>
#include <sys/stat.h>

#include <axutil_file_handler.h>

AXIS2_EXTERN void *AXIS2_CALL
axutil_file_handler_open(
    const axis2_char_t *file_name,
    const axis2_char_t *options)
{
    FILE *file_ptr;

    if(!file_name)
        return NULL;

    if(!options)
        return NULL;

    file_ptr = fopen(file_name, options);
    return file_ptr;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_file_handler_close(
    void *file_ptr)
{
    int status = 0;

    if(!file_ptr)
        return AXIS2_FAILURE;

    status = fclose(file_ptr);

    /*if successfully closed, it will return 0. otherwise EOF is returned */
    if(status != 0)
    {
        return AXIS2_FAILURE;
    }
    return AXIS2_SUCCESS;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_file_handler_access(
    const axis2_char_t *path,
    int mode)
{
    int i = 0;
    axis2_status_t status = AXIS2_FAILURE;
    i = AXIS2_ACCESS(path, mode);
    if(0 == i)
    {
        status = AXIS2_SUCCESS;
    }
    else if(-1 == i)
    {
        status = AXIS2_FAILURE;
    }
    return status;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_file_handler_copy(
    FILE *from,
    FILE *to)
{
    axis2_char_t ch;

    /* It is assumed that source and destination files are accessible and open*/
    while(!feof(from))
    {
        ch = (axis2_char_t)fgetc(from);
        /* We are sure that the conversion is safe */
        if(ferror(from))
        {
            /* Error reading source file */
            return AXIS2_FAILURE;
        }
        if(!feof(from))
            fputc(ch, to);
        if(ferror(to))
        {
            /* Error writing destination file */
            return AXIS2_FAILURE;
        }
    }
    return AXIS2_SUCCESS;
}

AXIS2_EXTERN long AXIS2_CALL
axutil_file_handler_size(
    const axis2_char_t * const name)
{
    struct stat stbuf;
    if(stat(name, &stbuf) == -1)
    {
        /* The file could not be accessed */
        return AXIS2_FAILURE;
    }
    return stbuf.st_size;
}