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/*
* divsufsort.h for libdivsufsort
* Copyright (c) 2003-2008 Yuta Mori All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _DIVSUFSORT_H
#define _DIVSUFSORT_H 1
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define DIVSUFSORT_API
/*- Datatypes -*/
#ifndef SAUCHAR_T
#define SAUCHAR_T
typedef unsigned char sauchar_t;
#endif /* SAUCHAR_T */
#ifndef SAINT_T
#define SAINT_T
typedef int saint_t;
#endif /* SAINT_T */
#ifndef SAIDX_T
#define SAIDX_T
typedef int saidx_t;
#endif /* SAIDX_T */
#ifndef PRIdSAIDX_T
#define PRIdSAIDX_T "d"
#endif
/*- divsufsort context */
typedef struct _divsufsort_ctx_t {
saidx_t *bucket_A;
saidx_t *bucket_B;
} divsufsort_ctx_t;
/*- Prototypes -*/
/**
* Initialize suffix array context
*
* @return 0 for success, or non-zero in case of an error
*/
int divsufsort_init(divsufsort_ctx_t *ctx);
/**
* Destroy suffix array context
*
* @param ctx suffix array context to destroy
*/
void divsufsort_destroy(divsufsort_ctx_t *ctx);
/**
* Constructs the suffix array of a given string.
* @param ctx suffix array context
* @param T[0..n-1] The input string.
* @param SA[0..n-1] The output array of suffixes.
* @param n The length of the given string.
* @return 0 if no error occurred, -1 or -2 otherwise.
*/
DIVSUFSORT_API
saint_t divsufsort_build_array(divsufsort_ctx_t *ctx, const sauchar_t *T, saidx_t *SA, saidx_t n);
#if 0
/**
* Constructs the burrows-wheeler transformed string of a given string.
* @param T[0..n-1] The input string.
* @param U[0..n-1] The output string. (can be T)
* @param A[0..n-1] The temporary array. (can be NULL)
* @param n The length of the given string.
* @return The primary index if no error occurred, -1 or -2 otherwise.
*/
DIVSUFSORT_API
saidx_t
divbwt(const sauchar_t *T, sauchar_t *U, saidx_t *A, saidx_t n);
/**
* Returns the version of the divsufsort library.
* @return The version number string.
*/
DIVSUFSORT_API
const char *
divsufsort_version(void);
/**
* Constructs the burrows-wheeler transformed string of a given string and suffix array.
* @param T[0..n-1] The input string.
* @param U[0..n-1] The output string. (can be T)
* @param SA[0..n-1] The suffix array. (can be NULL)
* @param n The length of the given string.
* @param idx The output primary index.
* @return 0 if no error occurred, -1 or -2 otherwise.
*/
DIVSUFSORT_API
saint_t
bw_transform(const sauchar_t *T, sauchar_t *U,
saidx_t *SA /* can NULL */,
saidx_t n, saidx_t *idx);
/**
* Inverse BW-transforms a given BWTed string.
* @param T[0..n-1] The input string.
* @param U[0..n-1] The output string. (can be T)
* @param A[0..n-1] The temporary array. (can be NULL)
* @param n The length of the given string.
* @param idx The primary index.
* @return 0 if no error occurred, -1 or -2 otherwise.
*/
DIVSUFSORT_API
saint_t
inverse_bw_transform(const sauchar_t *T, sauchar_t *U,
saidx_t *A /* can NULL */,
saidx_t n, saidx_t idx);
/**
* Checks the correctness of a given suffix array.
* @param T[0..n-1] The input string.
* @param SA[0..n-1] The input suffix array.
* @param n The length of the given string.
* @param verbose The verbose mode.
* @return 0 if no error occurred.
*/
DIVSUFSORT_API
saint_t
sufcheck(const sauchar_t *T, const saidx_t *SA, saidx_t n, saint_t verbose);
/**
* Search for the pattern P in the string T.
* @param T[0..Tsize-1] The input string.
* @param Tsize The length of the given string.
* @param P[0..Psize-1] The input pattern string.
* @param Psize The length of the given pattern string.
* @param SA[0..SAsize-1] The input suffix array.
* @param SAsize The length of the given suffix array.
* @param idx The output index.
* @return The count of matches if no error occurred, -1 otherwise.
*/
DIVSUFSORT_API
saidx_t
sa_search(const sauchar_t *T, saidx_t Tsize,
const sauchar_t *P, saidx_t Psize,
const saidx_t *SA, saidx_t SAsize,
saidx_t *left);
/**
* Search for the character c in the string T.
* @param T[0..Tsize-1] The input string.
* @param Tsize The length of the given string.
* @param SA[0..SAsize-1] The input suffix array.
* @param SAsize The length of the given suffix array.
* @param c The input character.
* @param idx The output index.
* @return The count of matches if no error occurred, -1 otherwise.
*/
DIVSUFSORT_API
saidx_t
sa_simplesearch(const sauchar_t *T, saidx_t Tsize,
const saidx_t *SA, saidx_t SAsize,
saint_t c, saidx_t *left);
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif /* _DIVSUFSORT_H */
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