Eio asynchronous API for Eet file.

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Eio asynchronous API for Eet file.
Eio

This set of functions help in the asynchronous use of Eet. More...

## Functions
EIO_API Eio_File * | eio_eet_open (const char *filename, Eet_File_Mode mode, Eio_Eet_Open_Cb eet_cb, Eio_Error_Cb error_cb, const void *data)
| Open an eet file on disk, and returns a handle to it asynchronously.
EIO_API Eio_File * | eio_eet_close (Eet_File *ef, Eio_Done_Cb done_cb, Eio_Eet_Error_Cb error_cb, const void *data)
| Close an eet file handle and flush pending writes asynchronously.
EIO_API Eio_File * | eio_eet_sync (Eet_File *ef, Eio_Done_Cb done_cb, Eio_Eet_Error_Cb error_cb, const void *data)
| Sync content of an eet file handle, flushing pending writes asynchronously.
EIO_API Eio_File * | eio_eet_data_write_cipher (Eet_File *ef, Eet_Data_Descriptor *edd, const char *name, const char *cipher_key, void *write_data, int compress, Eio_Done_Int_Cb done_cb, Eio_Error_Cb error_cb, const void *user_data)
| Write a data structure from memory and store in an eet file using a cipher asynchronously.
EIO_API Eio_File * | eio_eet_data_read_cipher (Eet_File *ef, Eet_Data_Descriptor *edd, const char *name, const char *cipher_key, Eio_Done_ERead_Cb done_cb, Eio_Error_Cb error_cb, const void *data)
| Read a data structure from an eet file and decodes it using a cipher asynchronously.
EIO_API Eio_File * | eio_eet_data_image_write_cipher (Eet_File *ef, const char *name, const char *cipher_key, void *write_data, unsigned int w, unsigned int h, int alpha, int compress, int quality, int lossy, Eio_Done_Int_Cb done_cb, Eio_Error_Cb error_cb, const void *user_data)
| Write image data to the named key in an eet file asynchronously.
EIO_API Eio_File * | eio_eet_read_direct (Eet_File *ef, const char *name, Eio_Done_Data_Cb done_cb, Eio_Error_Cb error_cb, const void *data)
| Read a specified entry from an eet file and return data.
EIO_API Eio_File * | eio_eet_read_cipher (Eet_File *ef, const char *name, const char *cipher_key, Eio_Done_Read_Cb done_cb, Eio_Error_Cb error_cb, const void *data)
| Read a specified entry from an eet file and return data.
EIO_API Eio_File * | eio_eet_write_cipher (Eet_File *ef, const char *name, void *write_data, int size, int compress, const char *cipher_key, Eio_Done_Int_Cb done_cb, Eio_Error_Cb error_cb, const void *user_data)
| Write a specified entry to an eet file handle using a cipher.

## Detailed Description

This set of functions help in the asynchronous use of Eet.

## Function Documentation

## ◆ eio_eet_open()

EIO_API Eio_File * eio_eet_open | ( | const char * | filename,
|  | Eet_File_Mode | mode,
|  | Eio_Eet_Open_Cb | eet_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | data
| ) |  |

Open an eet file on disk, and returns a handle to it asynchronously.

Parameters

  filename | The file path to the eet file. eg: `"/tmp/file.eet"`.
  mode | The mode for opening. Either EET_FILE_MODE_READ, EET_FILE_MODE_WRITE or EET_FILE_MODE_READ_WRITE.
  eet_cb | The callback to call when the file has been successfully opened.
  error_cb | Callback called in the main loop when the file can't be opened.
  data | Unmodified user data passed to callbacks

Returns
  NULL in case of a failure.

This function calls eet_open() from another thread using Ecore_Thread.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

## ◆ eio_eet_close()

EIO_API Eio_File * eio_eet_close | ( | Eet_File * | ef,
|  | Eio_Done_Cb | done_cb,
|  | Eio_Eet_Error_Cb | error_cb,
|  | const void * | data
| ) |  |

Close an eet file handle and flush pending writes asynchronously.

Parameters

  ef | A valid eet file handle.
  done_cb | Callback called from the main loop when the file has been closed.
  error_cb | Callback called in the main loop when the file can't be closed.
  data | Unmodified user data passed to callbacks

Returns
  NULL in case of a failure.

This function will call eet_close() from another thread by using Ecore_Thread. You should assume that the Eet_File is dead after this function is called.

References EET_ERROR_NONE, and EINA_SAFETY_ON_NULL_RETURN_VAL.

## ◆ eio_eet_sync()

EIO_API Eio_File * eio_eet_sync | ( | Eet_File * | ef,
|  | Eio_Done_Cb | done_cb,
|  | Eio_Eet_Error_Cb | error_cb,
|  | const void * | data
| ) |  |

Sync content of an eet file handle, flushing pending writes asynchronously.

Parameters

  ef | A valid eet file handle.
  done_cb | Callback called from the main loop when the file has been synced.
  error_cb | Callback called in the main loop when the file can't be synced.
  data | Unmodified user data passed to callbacks

Returns
  NULL in case of a failure.

This function will call eet_sync() from another thread. As long as the done_cb or error_cb haven't be called, you must keep `ef` open.

## ◆ eio_eet_data_write_cipher()

EIO_API Eio_File * eio_eet_data_write_cipher | ( | Eet_File * | ef,
|  | Eet_Data_Descriptor * | edd,
|  | const char * | name,
|  | const char * | cipher_key,
|  | void * | write_data,
|  | int | compress,
|  | Eio_Done_Int_Cb | done_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | user_data
| ) |  |

Write a data structure from memory and store in an eet file using a cipher asynchronously.

Parameters

  ef | The eet file handle to write to.
  edd | The data descriptor to use when encoding.
  name | The key to store the data under in the eet file.
  cipher_key | The key to use as cipher.
  write_data | A pointer to the data structure to save and encode.
  compress | Compression flags for storage.
  done_cb | Callback called from the main loop when the data has been put in the Eet_File.
  error_cb | Callback called in the main loop when the file can't be written.
  user_data | Private data given to each callback.

Returns
  NULL in case of a failure.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

## ◆ eio_eet_data_read_cipher()

EIO_API Eio_File * eio_eet_data_read_cipher | ( | Eet_File * | ef,
|  | Eet_Data_Descriptor * | edd,
|  | const char * | name,
|  | const char * | cipher_key,
|  | Eio_Done_ERead_Cb | done_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | data
| ) |  |

Read a data structure from an eet file and decodes it using a cipher asynchronously.

Parameters

  ef | The eet file handle to read from.
  edd | The data descriptor handle to use when decoding.
  name | The key the data is stored under in the eet file.
  cipher_key | The key to use as cipher.
  done_cb | Callback called from the main loop when the data has been read and decoded.
  error_cb | Callback called in the main loop when the data can't be read.
  data | Unmodified user data passed to callbacks

Returns
  NULL in case of a failure.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

## ◆ eio_eet_data_image_write_cipher()

EIO_API Eio_File * eio_eet_data_image_write_cipher | ( | Eet_File * | ef,
|  | const char * | name,
|  | const char * | cipher_key,
|  | void * | write_data,
|  | unsigned int | w,
|  | unsigned int | h,
|  | int | alpha,
|  | int | compress,
|  | int | quality,
|  | int | lossy,
|  | Eio_Done_Int_Cb | done_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | user_data
| ) |  |

Write image data to the named key in an eet file asynchronously.

Parameters

  ef | A valid eet file handle opened for writing.
  name | Name of the entry. eg: "/base/file_i_want".
  cipher_key | The key to use as cipher.
  write_data | A pointer to the image pixel data.
  w | The width of the image in pixels.
  h | The height of the image in pixels.
  alpha | The alpha channel flag.
  compress | The compression amount.
  quality | The quality encoding amount.
  lossy | The lossiness flag.
  done_cb | Callback called from the main loop when the data has been put in the Eet_File.
  error_cb | Callback called in the main loop when the file can't be written.
  user_data | Private data given to each callback.

Returns
  NULL in case of a failure.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

## ◆ eio_eet_read_direct()

EIO_API Eio_File * eio_eet_read_direct | ( | Eet_File * | ef,
|  | const char * | name,
|  | Eio_Done_Data_Cb | done_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | data
| ) |  |

Read a specified entry from an eet file and return data.

Parameters

  ef | A valid eet file handle opened for reading.
  name | Name of the entry. eg: "/base/file_i_want".
  done_cb | Callback called from the main loop when the data has been read.
  error_cb | Callback called in the main loop when the data can't be read.
  data | Unmodified user data passed to callbacks

Returns
  NULL in case of a failure.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

## ◆ eio_eet_read_cipher()

EIO_API Eio_File * eio_eet_read_cipher | ( | Eet_File * | ef,
|  | const char * | name,
|  | const char * | cipher_key,
|  | Eio_Done_Read_Cb | done_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | data
| ) |  |

Read a specified entry from an eet file and return data.

Parameters

  ef | A valid eet file handle opened for reading.
  name | Name of the entry. eg: "/base/file_i_want".
  cipher_key | The key to use as cipher.
  done_cb | Callback called from the main loop when the data has been read.
  error_cb | Callback called in the main loop when the data can't be read.
  data | Unmodified user data passed to callbacks

Returns
  NULL in case of a failure.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

## ◆ eio_eet_write_cipher()

EIO_API Eio_File * eio_eet_write_cipher | ( | Eet_File * | ef,
|  | const char * | name,
|  | void * | write_data,
|  | int | size,
|  | int | compress,
|  | const char * | cipher_key,
|  | Eio_Done_Int_Cb | done_cb,
|  | Eio_Error_Cb | error_cb,
|  | const void * | user_data
| ) |  |

Write a specified entry to an eet file handle using a cipher.

Parameters

  ef | A valid eet file handle opened for writing.
  name | Name of the entry. eg: "/base/file_i_want".
  write_data | Pointer to the data to be stored.
  size | Length in bytes in the data to be stored.
  compress | Compression flags (1 == compress, 0 = don't compress).
  cipher_key | The key to use as cipher.
  done_cb | Callback called from the main loop when the data has been put in the Eet_File.
  error_cb | Callback called in the main loop when the file can't be written.
  user_data | Private data given to each callback.

Returns
  NULL in case of a failure.

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().