FsFile.cpp

//------------------------------------------------------------------------------
//This file is part of embKernel. 
//See license.txt for the full license governing this code.
//------------------------------------------------------------------------------

#include "FsFile.hpp"
#include <stdlib.h>

FsFile::FsFile() {
}

FsFile::~FsFile() {
    close();
}

FsDefs::RESULT FsFile::open(const char* path, bool readOnly) {
    return FsEntry::open(path, readOnly, false, false);
}

FsDefs::RESULT FsFile::create(const char* path, bool readOnly) {
    return FsEntry::open(path, readOnly, true, false);
}

FsDefs::RESULT FsFile::read(void* buffer, size_t len, size_t* transfered) {
    if (!mSector) {
        return FsDefs::RES_ENTRY_NOT_OPEN;
    }
    *transfered = 0;
    if (len <= 0) {
        return FsDefs::RES_SUCCESS;
    }
    return Fs::read(buffer, len, transfered, this);
}

FsDefs::RESULT FsFile::write(const void* buffer, size_t len, size_t* transfered) {
    if (!mSector) {
        return FsDefs::RES_ENTRY_NOT_OPEN;
    }
    if (mFlags.bits.readOnly) {
        return FsDefs::RES_DENIED;
    }
    if (len <= 0) {
        return FsDefs::RES_SUCCESS;
    }
    mFlags.bits.unflushedSector = true;
    return Fs::write(buffer, len, transfered, this);
}

FsDefs::RESULT FsFile::seek(size_t position) {
    if (!mSector) {
        return FsDefs::RES_ENTRY_NOT_OPEN;
    }
    FsDefs::RESULT result = Fs::flush(this);
    if (result == FsDefs::RES_SUCCESS) {
        result = Fs::seek(this, position);
    }
    return result;
}

FsDefs::RESULT FsFile::flush() {
    FsDefs::RESULT result = Fs::flush(this);
    return result;
}

FsDefs::RESULT FsFile::close() {
    FsDefs::RESULT result = FsDefs::RES_ENTRY_NOT_OPEN;
    if (mSector) {
        result = Fs::flush(this);
        free(mSector);
        mSector = 0;
    }
    return result;
}

FsDefs::RESULT FsFile::del(const char* path) {
    return FsEntry::del(path, false);
}

uint32_t FsFile::getSize() {
    if (!mSector) {
        return 0;
    }
    return mSize;
}