~bzr-pqm/bzr/bzr.dev

Viewing changes to bzrlib/delta.h

Also adapt create_delta to the return code interface as it uses malloc

added added

removed removed

DELTA_INDEX_NEEDED, /* A delta_index must be passed */

DELTA_SOURCE_EMPTY, /* A source_info had no content */

DELTA_SOURCE_BAD, /* A source_info had invalid or corrupt content */

DELTA_BUFFER_EMPTY, /* A buffer pointer and size */

DELTA_SIZE_TOO_BIG, /* */

} delta_result;

* This function may be called multiple times with different buffers using

* the same delta_index pointer. If max_delta_size is non-zero and the

* resulting delta is to be larger than max_delta_size then NULL is returned.

* On success, a non-NULL pointer to the buffer with the delta data is

* returned and *delta_size is updated with its size. The returned buffer

* must be freed by the caller.

* resulting delta is to be larger than max_delta_size then DELTA_SIZE_TOO_BIG

* is returned. Otherwise on success, DELTA_OK is returned and the outparam

* is set to a new buffer with the delta data and *delta_size is updated with

* its size. That buffer must be freed by the caller.

extern void *

extern delta_result

create_delta(const struct delta_index *index,

const void *buf, unsigned long bufsize,

unsigned long *delta_size, unsigned long max_delta_size);

const void *buf, unsigned long bufsize,

unsigned long *delta_size, unsigned long max_delta_size,

void **delta_data);

/* the smallest possible delta size is 3 bytes

* Target size, Copy command, Copy length