[Courgette Experimental] Replace QSufSort with libdivsufsort

courgette/third_party/divsufsort/divsufsort_private.h

+/*
+ * divsufsort_private.h for libdivsufsort
+ * Copyright (c) 2003-2008 Yuta Mori All Rights Reserved.
+ *
+ * For the terms under which this work may be distributed, please see
+ * the adjoining file "LICENSE".
+ *
+ * Changelog:
+ * 2016-06-02 - Initial commit and adaption to use PagedArray.
+ *                --Samuel Huang <huangs@chromium.org>
+ */
+
+#ifndef COURGETTE_BSDIFF_THIRD_PARTY_DIVSUFSORT_PRIVATE_H_
+#define COURGETTE_BSDIFF_THIRD_PARTY_DIVSUFSORT_PRIVATE_H_
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#include "courgette/third_party/divsufsort/divsufsort.h"
+
+namespace divsuf {
+
+/*- Constants -*/
+#if !defined(UINT8_MAX)
+# define UINT8_MAX (255)
+#endif /* UINT8_MAX */
+#if defined(ALPHABET_SIZE) && (ALPHABET_SIZE < 1)
+# undef ALPHABET_SIZE
+#endif
+#if !defined(ALPHABET_SIZE)
+# define ALPHABET_SIZE (UINT8_MAX + 1)
+#endif
+
+/*- Macros -*/
+#ifndef SWAP
+# define SWAP(_a, _b) do { t = (_a); (_a) = (_b); (_b) = t; } while(0)
+#endif /* SWAP */
+#ifndef MIN
+# define MIN(_a, _b) (((_a) < (_b)) ? (_a) : (_b))
+#endif /* MIN */
+#ifndef MAX
+# define MAX(_a, _b) (((_a) > (_b)) ? (_a) : (_b))
+#endif /* MAX */
+
+/*- Private Prototypes -*/
+/* sssort.c */
+void
+sssort(const sauchar_t *T, const_saidx_it PA,
+       saidx_it first, saidx_it last,
+       saidx_it buf, saidx_t bufsize,
+       saidx_t depth, saidx_t n, saint_t lastsuffix);
+
+/* trsort.c */
+void
+trsort(saidx_it ISA, saidx_it SA, saidx_t n, saidx_t depth);
+
+}  // namespace divsuf
+
+#endif  // COURGETTE_BSDIFF_THIRD_PARTY_DIVSUFSORT_PRIVATE_H_