#ifndef ARTIFEX_EXTRACT_ZIP
#define ARTIFEX_EXTRACT_ZIP

/* Only for internal use by extract code.  */

#include "../include/extract_buffer.h"

#include <stddef.h>


/* Support for creating zip file content.

Content is compressed using deflate.

Unless otherwise stated, all functions return 0 on success or -1 with errno
set.
*/

/* Abstract handle for zipfile state. */
typedef struct extract_zip_t extract_zip_t;


/* Creates an extract_zip_t that writes to specified buffer.

We reuse <buffer>'s allocator for zlib's allocation needs.

buffer:
    Destination for zip file content.
o_zip:
    Out-param.
*/
int extract_zip_open(extract_buffer_t *buffer, extract_zip_t **o_zip);

/* Writes specified data into the zip file.

Returns same as extract_buffer_write(): 0 on success, +1 if short write due to
EOF or -1 with errno set.

zip:
    From extract_zip_open().
data:
    File contents.
data_length:
    Length in bytes of file contents.
name:
    Name of file within the zip file.
*/
int extract_zip_write_file(extract_zip_t *zip,
                           const void    *data,
                           size_t         data_length,
                           const char    *name);


/* Finishes writing the zip file (e.g. appends Central directory file headers
and End of central directory record).

Does not call extract_buffer_close().

zip:
    From extract_zip_open().
*/
int extract_zip_close(extract_zip_t **pzip);

#endif
