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#
# Cython declaration for the zran library.
#
from libc.stdio cimport FILE
from libc.stdint cimport uint8_t, uint16_t, uint32_t, uint64_t, int64_t
from posix.types cimport off_t
from cpython.ref cimport PyObject
cdef extern from "zran.h":
ctypedef struct zran_index_t:
FILE *fd;
PyObject *f;
size_t compressed_size;
size_t uncompressed_size;
uint32_t spacing;
uint32_t window_size;
uint32_t readbuf_size;
uint32_t npoints;
zran_point_t *list;
ctypedef struct zran_point_t:
uint64_t cmp_offset;
uint64_t uncmp_offset;
uint8_t bits;
uint8_t *data;
enum:
# flags for zran_init
ZRAN_AUTO_BUILD = 1,
ZRAN_SKIP_CRC_CHECK = 2,
# return codes for zran_build_index
ZRAN_BUILD_INDEX_OK = 0,
ZRAN_BUILD_INDEX_FAIL = -1,
ZRAN_BUILD_INDEX_CRC_ERROR = -2,
# return codes for zran_seek
ZRAN_SEEK_CRC_ERROR = -2,
ZRAN_SEEK_FAIL = -1,
ZRAN_SEEK_OK = 0,
ZRAN_SEEK_NOT_COVERED = 1,
ZRAN_SEEK_EOF = 2,
ZRAN_SEEK_INDEX_NOT_BUILT = 3,
# return codes for zran_read
ZRAN_READ_NOT_COVERED = -1,
ZRAN_READ_EOF = -2,
ZRAN_READ_FAIL = -3,
ZRAN_READ_CRC_ERROR = -4,
# return codes for zran_export_index
ZRAN_EXPORT_OK = 0,
ZRAN_EXPORT_WRITE_ERROR = -1,
# return codes for zran_import_index
ZRAN_IMPORT_OK = 0,
ZRAN_IMPORT_FAIL = -1,
ZRAN_IMPORT_EOF = -2,
ZRAN_IMPORT_READ_ERROR = -3,
ZRAN_IMPORT_INCONSISTENT = -4,
ZRAN_IMPORT_MEMORY_ERROR = -5,
ZRAN_IMPORT_UNKNOWN_FORMAT = -6,
ZRAN_IMPORT_UNSUPPORTED_VERSION = -7
int zran_init(zran_index_t *index,
FILE *fd,
PyObject *f,
uint32_t spacing,
uint32_t window_size,
uint32_t readbuf_size,
uint16_t flags)
void zran_free(zran_index_t *index)
int zran_build_index(zran_index_t *index,
uint64_t from_,
uint64_t until) nogil;
uint64_t zran_tell(zran_index_t *index);
int zran_seek(zran_index_t *index,
int64_t offset,
uint8_t whence,
zran_point_t **point) nogil;
int64_t zran_read(zran_index_t *index,
void *buf,
uint64_t len) nogil;
int zran_export_index(zran_index_t *index,
FILE *fd,
PyObject *f);
int zran_import_index(zran_index_t *index,
FILE *fd,
PyObject *f);
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