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diff --git a/src/divsufsort/divsufsort.h b/src/divsufsort/divsufsort.h
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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 */
+
+#include <inttypes.h>
+
+#ifndef DIVSUFSORT_API
+# ifdef DIVSUFSORT_BUILD_DLL
+#  define DIVSUFSORT_API 
+# else
+#  define DIVSUFSORT_API 
+# endif
+#endif
+
+/*- Datatypes -*/
+#ifndef SAUCHAR_T
+#define SAUCHAR_T
+typedef uint8_t sauchar_t;
+#endif /* SAUCHAR_T */
+#ifndef SAINT_T
+#define SAINT_T
+typedef int32_t saint_t;
+#endif /* SAINT_T */
+#ifndef SAIDX_T
+#define SAIDX_T
+typedef int32_t saidx_t;
+#endif /* SAIDX_T */
+#ifndef PRIdSAINT_T
+#define PRIdSAINT_T PRId32
+#endif /* PRIdSAINT_T */
+#ifndef PRIdSAIDX_T
+#define PRIdSAIDX_T PRId32
+#endif /* PRIdSAIDX_T */
+
+
+/*- Prototypes -*/
+
+/**
+ * Constructs the suffix array of a given string.
+ * @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.
+ * @param bucket_A Temporary space (size >= 256)
+ * @param bucket_B Temporary space (size >= 256 * 256)
+ *
+ * @return 0
+ */
+DIVSUFSORT_API
+saint_t
+divsufsort(const sauchar_t *T, saidx_t *SA, saidx_t n,
+     saidx_t *bucket_A, saidx_t *bucket_B);
+
+#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 */