31 m_delegate(*
FileInterface::getDelegate(m_handle_storage, &other.m_delegate)) {
37 this->m_mode = other.m_mode;
38 this->m_path = other.m_path;
39 this->m_crc = other.m_crc;
52 FW_ASSERT(File::Mode::OPEN_NO_MODE < requested_mode && File::Mode::MAX_OPEN_MODE > requested_mode);
59 File::Status status = this->m_delegate.
open(filepath, requested_mode, overwrite);
61 this->m_mode = requested_mode;
62 this->m_path = filepath;
64 this->m_crc = File::INITIAL_CRC;
74 this->m_delegate.
close();
76 this->m_path =
nullptr;
91 return this->m_delegate.
size(size_result);
101 return this->m_delegate.
position(position_result);
115 return this->m_delegate.
preallocate(offset, length);
128 return this->m_delegate.
seek(offset, seekType);
140 return this->m_delegate.
flush();
160 return this->m_delegate.
read(buffer,
size, wait);
181 return this->m_delegate.
write(buffer,
size, wait);
193 for (
FwSizeType i = 0; i < std::numeric_limits<FwSizeType>::max(); i++) {
218 if (
OP_OK == status) {
233 this->m_crc = File::INITIAL_CRC;
261 read = current_chunk_size;
262 status = this->
read(buffer + i,
read, wait);
275 if (buffer[j] ==
'\n') {
#define FW_MIN(a, b)
MIN macro.
uint8_t U8
8-bit unsigned integer
PlatformSignedSizeType FwSignedSizeType
#define FW_FILE_CHUNK_SIZE
Chunk size for working with files in the OSAL layer.
PlatformSizeType FwSizeType
Status seek(FwSignedSizeType offset, SeekType seekType) override
seek the file pointer to the given offset
Status incrementalCrc(FwSignedSizeType &size)
calculate the CRC32 of the next section of data
Status read(U8 *buffer, FwSignedSizeType &size)
read data from this file into supplied buffer bounded by size
Status flush() override
flush file contents to storage
Status size(FwSignedSizeType &size_result) override
get size of currently open file
void close() override
close the file, if not opened then do nothing
Status finalizeCrc(U32 &crc)
finalize and retrieve the CRC value
Status readline(U8 *buffer, FwSignedSizeType &size, WaitType wait)
read a line from the file using \n as the delimiter
FileHandle * getHandle() override
returns the raw file handle
Os::FileInterface::Status open(const char *path, Mode mode)
open file with supplied path and mode
Status preallocate(FwSignedSizeType offset, FwSignedSizeType length) override
pre-allocate file storage
Status position(FwSignedSizeType &position_result) override
get file pointer position of the currently open file
Status calculateCrc(U32 &crc)
calculate the CRC32 of the entire file
bool isOpen() const
determine if the file is open
File & operator=(const File &other)
assignment operator that copies the internal representation
Status write(const U8 *buffer, FwSignedSizeType &size)
write data to this file from the supplied buffer bounded by size
virtual void close()=0
close the file, if not opened then do nothing
virtual Status size(FwSignedSizeType &size_result)=0
get size of currently open file
virtual Status preallocate(FwSignedSizeType offset, FwSignedSizeType length)=0
pre-allocate file storage
@ WAIT
Do wait for read/write operation to finish.
@ NO_WAIT
Do not wait for read/write operation to finish.
virtual Status flush()=0
flush file contents to storage
@ NO_OVERWRITE
Do NOT overwrite existing files.
static FileInterface * getDelegate(FileHandleStorage &aligned_placement_new_memory, const FileInterface *to_copy=nullptr)
provide a pointer to a file delegate object
virtual Status write(const U8 *buffer, FwSignedSizeType &size, WaitType wait)=0
read data from this file into supplied buffer bounded by size
virtual Status position(FwSignedSizeType &position_result)=0
get file pointer position of the currently open file
virtual Status open(const char *path, Mode mode, OverwriteType overwrite)=0
open file with supplied path and mode
virtual Status read(U8 *buffer, FwSignedSizeType &size, WaitType wait)=0
read data from this file into supplied buffer bounded by size
@ INVALID_MODE
Mode for file access is invalid for current operation.
@ NOT_OPENED
file hasn't been opened yet
@ OTHER_ERROR
A catch-all for other errors. Have to look in implementation-specific code.
@ OP_OK
Operation was successful.
@ ABSOLUTE
Absolute seek from beginning of file.
@ RELATIVE
Relative seek from current file offset.
@ MAX_OPEN_MODE
Maximum value of mode.
@ OPEN_NO_MODE
File mode not yet selected.
@ OPEN_READ
Open file for reading.
virtual FileHandle * getHandle()=0
returns the raw file handle
virtual Status seek(FwSignedSizeType offset, SeekType seekType)=0
seek the file pointer to the given offset
virtual ~FileInterface()=default
unsigned long update_crc_32(unsigned long crc, char c)
base implementation of FileHandle