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binding.py
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binding.py
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# -*- coding: utf-8 -*-
'''Binding via CFFI to the MeCab library.'''
import cffi
def _ffi_libmecab():
'''Returns an FFI interface to MeCab library.
Library definition is from mecab.h.
'''
ffi = cffi.FFI()
ffi.cdef('''
struct mecab_dictionary_info_t {
const char *filename;
const char *charset;
unsigned int size;
int type;
unsigned int lsize;
unsigned int rsize;
unsigned short version;
struct mecab_dictionary_info_t *next;
};
struct mecab_path_t {
struct mecab_node_t* rnode;
struct mecab_path_t* rnext;
struct mecab_node_t* lnode;
struct mecab_path_t* lnext;
int cost;
float prob;
};
struct mecab_node_t {
struct mecab_node_t *prev;
struct mecab_node_t *next;
struct mecab_node_t *enext;
struct mecab_node_t *bnext;
struct mecab_path_t *rpath;
struct mecab_path_t *lpath;
const char *surface;
const char *feature;
unsigned int id;
unsigned short length;
unsigned short rlength;
unsigned short rcAttr;
unsigned short lcAttr;
unsigned short posid;
unsigned char char_type;
unsigned char stat;
unsigned char isbest;
float alpha;
float beta;
float prob;
short wcost;
long cost;
};
typedef struct mecab_t mecab_t;
typedef struct mecab_model_t mecab_model_t;
typedef struct mecab_lattice_t mecab_lattice_t;
typedef struct mecab_dictionary_info_t mecab_dictionary_info_t;
typedef struct mecab_node_t mecab_node_t;
typedef struct mecab_path_t mecab_path_t;
mecab_t* mecab_new2(const char *arg);
const char* mecab_version();
const char* mecab_strerror(mecab_t *mecab);
void mecab_destroy(mecab_t *mecab);
void mecab_set_partial(mecab_t *mecab, int partial);
void mecab_set_theta(mecab_t *mecab, float theta);
void mecab_set_lattice_level(mecab_t *mecab, int level);
void mecab_set_all_morphs(mecab_t *mecab, int all_morphs);
const char* mecab_sparse_tostr(mecab_t *mecab, const char *str);
const mecab_node_t* mecab_sparse_tonode(mecab_t *mecab, const char*);
int mecab_nbest_init(mecab_t *mecab, const char *str);
const char* mecab_nbest_sparse_tostr(mecab_t *mecab, size_t N,
const char *str);
const mecab_node_t* mecab_nbest_next_tonode(mecab_t *mecab);
const char* mecab_format_node(mecab_t *mecab,
const mecab_node_t *node);
const mecab_dictionary_info_t* mecab_dictionary_info(mecab_t *mecab);
''')
return ffi
'''
Copyright (c) 2015, Brooke M. Fujita.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''