/**
 * Copyright (c) 2011-2018 Bill Greiman
 * This file is part of the SdFat library for SD memory cards.
 *
 * MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
#include "fstream.h"
//==============================================================================
/// @cond SHOW_PROTECTED
int16_t FatStreamBase::getch()
{
    uint8_t c;
    int8_t s = read(&c, 1);
    if (s != 1)
    {
        if (s < 0)
        {
            setstate(badbit);
        }
        else
        {
            setstate(eofbit);
        }
        return -1;
    }
    if (c != '\r' || (getmode() & ios::binary))
    {
        return c;
    }
    s = read(&c, 1);
    if (s == 1 && c == '\n')
    {
        return c;
    }
    if (s == 1)
    {
        seekCur(-1);
    }
    return '\r';
}
//------------------------------------------------------------------------------
void FatStreamBase::open(const char *path, ios::openmode mode)
{
    oflag_t oflag;
    switch (mode & (app | in | out | trunc))
    {
    case app | in:
    case app | in | out:
        oflag = O_RDWR | O_APPEND | O_CREAT;
        break;

    case app:
    case app | out:
        oflag = O_WRONLY | O_APPEND | O_CREAT;
        break;

    case in:
        oflag = O_RDONLY;
        break;

    case in | out:
        oflag = O_RDWR;
        break;

    case in | out | trunc:
        oflag = O_RDWR | O_TRUNC | O_CREAT;
        break;

    case out:
    case out | trunc:
        oflag = O_WRONLY | O_TRUNC | O_CREAT;
        break;

    default:
        goto fail;
    }
    if (mode & ios::ate)
    {
        oflag |= O_AT_END;
    }
    if (!FatFile::open(path, oflag))
    {
        goto fail;
    }
    setmode(mode);
    clear();
    return;

fail:
    FatFile::close();
    setstate(failbit);
    return;
}
//------------------------------------------------------------------------------
void FatStreamBase::putch(char c)
{
    if (c == '\n' && !(getmode() & ios::binary))
    {
        write('\r');
    }
    write(c);
    if (getWriteError())
    {
        setstate(badbit);
    }
}
//------------------------------------------------------------------------------
void FatStreamBase::putstr(const char *str)
{
    size_t n = 0;
    while (1)
    {
        char c = str[n];
        if (c == '\0' || (c == '\n' && !(getmode() & ios::binary)))
        {
            if (n > 0)
            {
                write(str, n);
            }
            if (c == '\0')
            {
                break;
            }
            write('\r');
            str += n;
            n = 0;
        }
        n++;
    }
    if (getWriteError())
    {
        setstate(badbit);
    }
}
//------------------------------------------------------------------------------
/** Internal do not use
 * \param[in] off
 * \param[in] way
 */
bool FatStreamBase::seekoff(off_type off, seekdir way)
{
    pos_type pos;
    switch (way)
    {
    case beg:
        pos = off;
        break;

    case cur:
        pos = curPosition() + off;
        break;

    case end:
        pos = fileSize() + off;
        break;

    default:
        return false;
    }
    return seekpos(pos);
}
//------------------------------------------------------------------------------
/** Internal do not use
 * \param[in] pos
 */
bool FatStreamBase::seekpos(pos_type pos)
{
    return seekSet(pos);
}
//------------------------------------------------------------------------------
int FatStreamBase::write(const void *buf, size_t n)
{
    return FatFile::write(buf, n);
}
//------------------------------------------------------------------------------
void FatStreamBase::write(char c)
{
    write(&c, 1);
}
/// @endcond
