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[utils] string utils, file utils, contiguous arrays of strings used for storing tokenized strings, klib for generic hashtables and vectors, antirez's sds for certain types of string building, utf8proc for iterating over utf-8 strings and unicode normalization

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2015-03-03 12:27:19 -05:00
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/* The MIT License
Copyright (c) 2008, 2009, 2011 by Attractive Chaos <attractor@live.co.uk>
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.
*/
/*
An example:
#include "khash.h"
KHASH_MAP_INIT_INT(32, char)
int main() {
int ret, is_missing;
khiter_t k;
khash_t(32) *h = kh_init(32);
k = kh_put(32, h, 5, &ret);
kh_value(h, k) = 10;
k = kh_get(32, h, 10);
is_missing = (k == kh_end(h));
k = kh_get(32, h, 5);
kh_del(32, h, k);
for (k = kh_begin(h); k != kh_end(h); ++k)
if (kh_exist(h, k)) kh_value(h, k) = 1;
kh_destroy(32, h);
return 0;
}
*/
/*
2013-05-02 (0.2.8):
* Use quadratic probing. When the capacity is power of 2, stepping function
i*(i+1)/2 guarantees to traverse each bucket. It is better than double
hashing on cache performance and is more robust than linear probing.
In theory, double hashing should be more robust than quadratic probing.
However, my implementation is probably not for large hash tables, because
the second hash function is closely tied to the first hash function,
which reduce the effectiveness of double hashing.
Reference: http://research.cs.vt.edu/AVresearch/hashing/quadratic.php
2011-12-29 (0.2.7):
* Minor code clean up; no actual effect.
2011-09-16 (0.2.6):
* The capacity is a power of 2. This seems to dramatically improve the
speed for simple keys. Thank Zilong Tan for the suggestion. Reference:
- http://code.google.com/p/ulib/
- http://nothings.org/computer/judy/
* Allow to optionally use linear probing which usually has better
performance for random input. Double hashing is still the default as it
is more robust to certain non-random input.
* Added Wang's integer hash function (not used by default). This hash
function is more robust to certain non-random input.
2011-02-14 (0.2.5):
* Allow to declare global functions.
2009-09-26 (0.2.4):
* Improve portability
2008-09-19 (0.2.3):
* Corrected the example
* Improved interfaces
2008-09-11 (0.2.2):
* Improved speed a little in kh_put()
2008-09-10 (0.2.1):
* Added kh_clear()
* Fixed a compiling error
2008-09-02 (0.2.0):
* Changed to token concatenation which increases flexibility.
2008-08-31 (0.1.2):
* Fixed a bug in kh_get(), which has not been tested previously.
2008-08-31 (0.1.1):
* Added destructor
*/
#ifndef __AC_KHASH_H
#define __AC_KHASH_H
/*!
@header
Generic hash table library.
*/
#define AC_VERSION_KHASH_H "0.2.8"
#include <stdlib.h>
#include <string.h>
#include <limits.h>
/* compiler specific configuration */
#if UINT_MAX == 0xffffffffu
typedef unsigned int khint32_t;
#elif ULONG_MAX == 0xffffffffu
typedef unsigned long khint32_t;
#endif
#if ULONG_MAX == ULLONG_MAX
typedef unsigned long khint64_t;
#else
typedef unsigned long long khint64_t;
#endif
#ifndef kh_inline
#ifdef _MSC_VER
#define kh_inline __inline
#else
#define kh_inline inline
#endif
#endif /* kh_inline */
typedef khint32_t khint_t;
typedef khint_t khiter_t;
#define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2)
#define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1)
#define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3)
#define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1)))
#define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1)))
#define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1)))
#define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1))
#define __ac_fsize(m) ((m) < 16? 1 : (m)>>4)
#ifndef kroundup32
#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
#endif
#ifndef kcalloc
#define kcalloc(N,Z) calloc(N,Z)
#endif
#ifndef kmalloc
#define kmalloc(Z) malloc(Z)
#endif
#ifndef krealloc
#define krealloc(P,Z) realloc(P,Z)
#endif
#ifndef kfree
#define kfree(P) free(P)
#endif
static const double __ac_HASH_UPPER = 0.77;
#define __KHASH_TYPE(name, khkey_t, khval_t) \
typedef struct { \
khint_t n_buckets, size, n_occupied, upper_bound; \
khint32_t *flags; \
khkey_t *keys; \
khval_t *vals; \
} kh_##name##_t;
#define __KHASH_PROTOTYPES(name, khkey_t, khval_t) \
extern kh_##name##_t *kh_init_##name(void); \
extern void kh_destroy_##name(kh_##name##_t *h); \
extern void kh_clear_##name(kh_##name##_t *h); \
extern khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key); \
extern int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets); \
extern khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret); \
extern void kh_del_##name(kh_##name##_t *h, khint_t x);
#define __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
SCOPE kh_##name##_t *kh_init_##name(void) { \
return (kh_##name##_t*)kcalloc(1, sizeof(kh_##name##_t)); \
} \
SCOPE void kh_destroy_##name(kh_##name##_t *h) \
{ \
if (h) { \
kfree((void *)h->keys); kfree(h->flags); \
kfree((void *)h->vals); \
kfree(h); \
} \
} \
SCOPE void kh_clear_##name(kh_##name##_t *h) \
{ \
if (h && h->flags) { \
memset(h->flags, 0xaa, __ac_fsize(h->n_buckets) * sizeof(khint32_t)); \
h->size = h->n_occupied = 0; \
} \
} \
SCOPE khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key) \
{ \
if (h->n_buckets) { \
khint_t k, i, last, mask, step = 0; \
mask = h->n_buckets - 1; \
k = __hash_func(key); i = k & mask; \
last = i; \
while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
i = (i + (++step)) & mask; \
if (i == last) return h->n_buckets; \
} \
return __ac_iseither(h->flags, i)? h->n_buckets : i; \
} else return 0; \
} \
SCOPE int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \
{ /* This function uses 0.25*n_buckets bytes of working space instead of [sizeof(key_t+val_t)+.25]*n_buckets. */ \
khint32_t *new_flags = 0; \
khint_t j = 1; \
{ \
kroundup32(new_n_buckets); \
if (new_n_buckets < 4) new_n_buckets = 4; \
if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; /* requested size is too small */ \
else { /* hash table size to be changed (shrink or expand); rehash */ \
new_flags = (khint32_t*)kmalloc(__ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
if (!new_flags) return -1; \
memset(new_flags, 0xaa, __ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
if (h->n_buckets < new_n_buckets) { /* expand */ \
khkey_t *new_keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
if (!new_keys) { kfree(new_flags); return -1; } \
h->keys = new_keys; \
if (kh_is_map) { \
khval_t *new_vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
if (!new_vals) { kfree(new_flags); return -1; } \
h->vals = new_vals; \
} \
} /* otherwise shrink */ \
} \
} \
if (j) { /* rehashing is needed */ \
for (j = 0; j != h->n_buckets; ++j) { \
if (__ac_iseither(h->flags, j) == 0) { \
khkey_t key = h->keys[j]; \
khval_t val; \
khint_t new_mask; \
new_mask = new_n_buckets - 1; \
if (kh_is_map) val = h->vals[j]; \
__ac_set_isdel_true(h->flags, j); \
while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \
khint_t k, i, step = 0; \
k = __hash_func(key); \
i = k & new_mask; \
while (!__ac_isempty(new_flags, i)) i = (i + (++step)) & new_mask; \
__ac_set_isempty_false(new_flags, i); \
if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { /* kick out the existing element */ \
{ khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \
if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \
__ac_set_isdel_true(h->flags, i); /* mark it as deleted in the old hash table */ \
} else { /* write the element and jump out of the loop */ \
h->keys[i] = key; \
if (kh_is_map) h->vals[i] = val; \
break; \
} \
} \
} \
} \
if (h->n_buckets > new_n_buckets) { /* shrink the hash table */ \
h->keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
if (kh_is_map) h->vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
} \
kfree(h->flags); /* free the working space */ \
h->flags = new_flags; \
h->n_buckets = new_n_buckets; \
h->n_occupied = h->size; \
h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \
} \
return 0; \
} \
SCOPE khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \
{ \
khint_t x; \
if (h->n_occupied >= h->upper_bound) { /* update the hash table */ \
if (h->n_buckets > (h->size<<1)) { \
if (kh_resize_##name(h, h->n_buckets - 1) < 0) { /* clear "deleted" elements */ \
*ret = -1; return h->n_buckets; \
} \
} else if (kh_resize_##name(h, h->n_buckets + 1) < 0) { /* expand the hash table */ \
*ret = -1; return h->n_buckets; \
} \
} /* TODO: to implement automatically shrinking; resize() already support shrinking */ \
{ \
khint_t k, i, site, last, mask = h->n_buckets - 1, step = 0; \
x = site = h->n_buckets; k = __hash_func(key); i = k & mask; \
if (__ac_isempty(h->flags, i)) x = i; /* for speed up */ \
else { \
last = i; \
while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
if (__ac_isdel(h->flags, i)) site = i; \
i = (i + (++step)) & mask; \
if (i == last) { x = site; break; } \
} \
if (x == h->n_buckets) { \
if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \
else x = i; \
} \
} \
} \
if (__ac_isempty(h->flags, x)) { /* not present at all */ \
h->keys[x] = key; \
__ac_set_isboth_false(h->flags, x); \
++h->size; ++h->n_occupied; \
*ret = 1; \
} else if (__ac_isdel(h->flags, x)) { /* deleted */ \
h->keys[x] = key; \
__ac_set_isboth_false(h->flags, x); \
++h->size; \
*ret = 2; \
} else *ret = 0; /* Don't touch h->keys[x] if present and not deleted */ \
return x; \
} \
SCOPE void kh_del_##name(kh_##name##_t *h, khint_t x) \
{ \
if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \
__ac_set_isdel_true(h->flags, x); \
--h->size; \
} \
}
#define KHASH_DECLARE(name, khkey_t, khval_t) \
__KHASH_TYPE(name, khkey_t, khval_t) \
__KHASH_PROTOTYPES(name, khkey_t, khval_t)
#define KHASH_INIT2(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
__KHASH_TYPE(name, khkey_t, khval_t) \
__KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
#define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
KHASH_INIT2(name, static kh_inline, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
/* --- BEGIN OF HASH FUNCTIONS --- */
/*! @function
@abstract Integer hash function
@param key The integer [khint32_t]
@return The hash value [khint_t]
*/
#define kh_int_hash_func(key) (khint32_t)(key)
/*! @function
@abstract Integer comparison function
*/
#define kh_int_hash_equal(a, b) ((a) == (b))
/*! @function
@abstract 64-bit integer hash function
@param key The integer [khint64_t]
@return The hash value [khint_t]
*/
#define kh_int64_hash_func(key) (khint32_t)((key)>>33^(key)^(key)<<11)
/*! @function
@abstract 64-bit integer comparison function
*/
#define kh_int64_hash_equal(a, b) ((a) == (b))
/*! @function
@abstract const char* hash function
@param s Pointer to a null terminated string
@return The hash value
*/
static kh_inline khint_t __ac_X31_hash_string(const char *s)
{
khint_t h = (khint_t)*s;
if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s;
return h;
}
/*! @function
@abstract Another interface to const char* hash function
@param key Pointer to a null terminated string [const char*]
@return The hash value [khint_t]
*/
#define kh_str_hash_func(key) __ac_X31_hash_string(key)
/*! @function
@abstract Const char* comparison function
*/
#define kh_str_hash_equal(a, b) (strcmp(a, b) == 0)
static kh_inline khint_t __ac_Wang_hash(khint_t key)
{
key += ~(key << 15);
key ^= (key >> 10);
key += (key << 3);
key ^= (key >> 6);
key += ~(key << 11);
key ^= (key >> 16);
return key;
}
#define kh_int_hash_func2(k) __ac_Wang_hash((khint_t)key)
/* --- END OF HASH FUNCTIONS --- */
/* Other convenient macros... */
/*!
@abstract Type of the hash table.
@param name Name of the hash table [symbol]
*/
#define khash_t(name) kh_##name##_t
/*! @function
@abstract Initiate a hash table.
@param name Name of the hash table [symbol]
@return Pointer to the hash table [khash_t(name)*]
*/
#define kh_init(name) kh_init_##name()
/*! @function
@abstract Destroy a hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
*/
#define kh_destroy(name, h) kh_destroy_##name(h)
/*! @function
@abstract Reset a hash table without deallocating memory.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
*/
#define kh_clear(name, h) kh_clear_##name(h)
/*! @function
@abstract Resize a hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param s New size [khint_t]
*/
#define kh_resize(name, h, s) kh_resize_##name(h, s)
/*! @function
@abstract Insert a key to the hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param k Key [type of keys]
@param r Extra return code: -1 if the operation failed;
0 if the key is present in the hash table;
1 if the bucket is empty (never used); 2 if the element in
the bucket has been deleted [int*]
@return Iterator to the inserted element [khint_t]
*/
#define kh_put(name, h, k, r) kh_put_##name(h, k, r)
/*! @function
@abstract Retrieve a key from the hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param k Key [type of keys]
@return Iterator to the found element, or kh_end(h) if the element is absent [khint_t]
*/
#define kh_get(name, h, k) kh_get_##name(h, k)
/*! @function
@abstract Remove a key from the hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param k Iterator to the element to be deleted [khint_t]
*/
#define kh_del(name, h, k) kh_del_##name(h, k)
/*! @function
@abstract Test whether a bucket contains data.
@param h Pointer to the hash table [khash_t(name)*]
@param x Iterator to the bucket [khint_t]
@return 1 if containing data; 0 otherwise [int]
*/
#define kh_exist(h, x) (!__ac_iseither((h)->flags, (x)))
/*! @function
@abstract Get key given an iterator
@param h Pointer to the hash table [khash_t(name)*]
@param x Iterator to the bucket [khint_t]
@return Key [type of keys]
*/
#define kh_key(h, x) ((h)->keys[x])
/*! @function
@abstract Get value given an iterator
@param h Pointer to the hash table [khash_t(name)*]
@param x Iterator to the bucket [khint_t]
@return Value [type of values]
@discussion For hash sets, calling this results in segfault.
*/
#define kh_val(h, x) ((h)->vals[x])
/*! @function
@abstract Alias of kh_val()
*/
#define kh_value(h, x) ((h)->vals[x])
/*! @function
@abstract Get the start iterator
@param h Pointer to the hash table [khash_t(name)*]
@return The start iterator [khint_t]
*/
#define kh_begin(h) (khint_t)(0)
/*! @function
@abstract Get the end iterator
@param h Pointer to the hash table [khash_t(name)*]
@return The end iterator [khint_t]
*/
#define kh_end(h) ((h)->n_buckets)
/*! @function
@abstract Get the number of elements in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@return Number of elements in the hash table [khint_t]
*/
#define kh_size(h) ((h)->size)
/*! @function
@abstract Get the number of buckets in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@return Number of buckets in the hash table [khint_t]
*/
#define kh_n_buckets(h) ((h)->n_buckets)
/*! @function
@abstract Iterate over the entries in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@param kvar Variable to which key will be assigned
@param vvar Variable to which value will be assigned
@param code Block of code to execute
*/
#define kh_foreach(h, kvar, vvar, code) { khint_t __i; \
for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
if (!kh_exist(h,__i)) continue; \
(kvar) = kh_key(h,__i); \
(vvar) = kh_val(h,__i); \
code; \
} }
/*! @function
@abstract Iterate over the values in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@param vvar Variable to which value will be assigned
@param code Block of code to execute
*/
#define kh_foreach_value(h, vvar, code) { khint_t __i; \
for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
if (!kh_exist(h,__i)) continue; \
(vvar) = kh_val(h,__i); \
code; \
} }
/* More conenient interfaces */
/*! @function
@abstract Instantiate a hash set containing integer keys
@param name Name of the hash table [symbol]
*/
#define KHASH_SET_INIT_INT(name) \
KHASH_INIT(name, khint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal)
/*! @function
@abstract Instantiate a hash map containing integer keys
@param name Name of the hash table [symbol]
@param khval_t Type of values [type]
*/
#define KHASH_MAP_INIT_INT(name, khval_t) \
KHASH_INIT(name, khint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
/*! @function
@abstract Instantiate a hash map containing 64-bit integer keys
@param name Name of the hash table [symbol]
*/
#define KHASH_SET_INIT_INT64(name) \
KHASH_INIT(name, khint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal)
/*! @function
@abstract Instantiate a hash map containing 64-bit integer keys
@param name Name of the hash table [symbol]
@param khval_t Type of values [type]
*/
#define KHASH_MAP_INIT_INT64(name, khval_t) \
KHASH_INIT(name, khint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal)
typedef const char *kh_cstr_t;
/*! @function
@abstract Instantiate a hash map containing const char* keys
@param name Name of the hash table [symbol]
*/
#define KHASH_SET_INIT_STR(name) \
KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal)
/*! @function
@abstract Instantiate a hash map containing const char* keys
@param name Name of the hash table [symbol]
@param khval_t Type of values [type]
*/
#define KHASH_MAP_INIT_STR(name, khval_t) \
KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
#endif /* __AC_KHASH_H */

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/* The MIT License
Copyright (c) 2008-2009, by Attractive Chaos <attractor@live.co.uk>
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 _AC_KLIST_H
#define _AC_KLIST_H
#include <stdlib.h>
#define KMEMPOOL_INIT(name, kmptype_t, kmpfree_f) \
typedef struct { \
size_t cnt, n, max; \
kmptype_t **buf; \
} kmp_##name##_t; \
static inline kmp_##name##_t *kmp_init_##name(void) { \
return calloc(1, sizeof(kmp_##name##_t)); \
} \
static inline void kmp_destroy_##name(kmp_##name##_t *mp) { \
size_t k; \
for (k = 0; k < mp->n; ++k) { \
kmpfree_f(mp->buf[k]); free(mp->buf[k]); \
} \
free(mp->buf); free(mp); \
} \
static inline kmptype_t *kmp_alloc_##name(kmp_##name##_t *mp) { \
++mp->cnt; \
if (mp->n == 0) return calloc(1, sizeof(kmptype_t)); \
return mp->buf[--mp->n]; \
} \
static inline void kmp_free_##name(kmp_##name##_t *mp, kmptype_t *p) { \
--mp->cnt; \
if (mp->n == mp->max) { \
mp->max = mp->max? mp->max<<1 : 16; \
mp->buf = realloc(mp->buf, sizeof(kmptype_t *) * mp->max); \
} \
mp->buf[mp->n++] = p; \
}
#define kmempool_t(name) kmp_##name##_t
#define kmp_init(name) kmp_init_##name()
#define kmp_destroy(name, mp) kmp_destroy_##name(mp)
#define kmp_alloc(name, mp) kmp_alloc_##name(mp)
#define kmp_free(name, mp, p) kmp_free_##name(mp, p)
#define KLIST_INIT(name, kltype_t, kmpfree_t) \
struct __kl1_##name { \
kltype_t data; \
struct __kl1_##name *next; \
}; \
typedef struct __kl1_##name kl1_##name; \
KMEMPOOL_INIT(name, kl1_##name, kmpfree_t) \
typedef struct { \
kl1_##name *head, *tail; \
kmp_##name##_t *mp; \
size_t size; \
} kl_##name##_t; \
static inline kl_##name##_t *kl_init_##name(void) { \
kl_##name##_t *kl = calloc(1, sizeof(kl_##name##_t)); \
kl->mp = kmp_init(name); \
kl->head = kl->tail = kmp_alloc(name, kl->mp); \
kl->head->next = 0; \
return kl; \
} \
static inline void kl_destroy_##name(kl_##name##_t *kl) { \
kl1_##name *p; \
for (p = kl->head; p != kl->tail; p = p->next) \
kmp_free(name, kl->mp, p); \
kmp_free(name, kl->mp, p); \
kmp_destroy(name, kl->mp); \
free(kl); \
} \
static inline kltype_t *kl_pushp_##name(kl_##name##_t *kl) { \
kl1_##name *q, *p = kmp_alloc(name, kl->mp); \
q = kl->tail; p->next = 0; kl->tail->next = p; kl->tail = p; \
++kl->size; \
return &q->data; \
} \
static inline int kl_shift_##name(kl_##name##_t *kl, kltype_t *d) { \
kl1_##name *p; \
if (kl->head->next == 0) return -1; \
--kl->size; \
p = kl->head; kl->head = kl->head->next; \
if (d) *d = p->data; \
kmp_free(name, kl->mp, p); \
return 0; \
}
#define kliter_t(name) kl1_##name
#define klist_t(name) kl_##name##_t
#define kl_val(iter) ((iter)->data)
#define kl_next(iter) ((iter)->next)
#define kl_begin(kl) ((kl)->head)
#define kl_end(kl) ((kl)->tail)
#define kl_init(name) kl_init_##name()
#define kl_destroy(name, kl) kl_destroy_##name(kl)
#define kl_pushp(name, kl) kl_pushp_##name(kl)
#define kl_shift(name, kl, d) kl_shift_##name(kl, d)
#endif

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/* The MIT License
Copyright (c) 2008, 2011 Attractive Chaos <attractor@live.co.uk>
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.
*/
/*
2011-04-10 (0.1.6):
* Added sample
2011-03 (0.1.5):
* Added shuffle/permutation
2008-11-16 (0.1.4):
* Fixed a bug in introsort() that happens in rare cases.
2008-11-05 (0.1.3):
* Fixed a bug in introsort() for complex comparisons.
* Fixed a bug in mergesort(). The previous version is not stable.
2008-09-15 (0.1.2):
* Accelerated introsort. On my Mac (not on another Linux machine),
my implementation is as fast as std::sort on random input.
* Added combsort and in introsort, switch to combsort if the
recursion is too deep.
2008-09-13 (0.1.1):
* Added k-small algorithm
2008-09-05 (0.1.0):
* Initial version
*/
#ifndef AC_KSORT_H
#define AC_KSORT_H
#include <stdlib.h>
#include <string.h>
typedef struct {
void *left, *right;
int depth;
} ks_isort_stack_t;
#define KSORT_SWAP(type_t, a, b) { register type_t t=(a); (a)=(b); (b)=t; }
#define KSORT_INIT(name, type_t, __sort_lt) \
void ks_mergesort_##name(size_t n, type_t array[], type_t temp[]) \
{ \
type_t *a2[2], *a, *b; \
int curr, shift; \
\
a2[0] = array; \
a2[1] = temp? temp : (type_t*)malloc(sizeof(type_t) * n); \
for (curr = 0, shift = 0; (1ul<<shift) < n; ++shift) { \
a = a2[curr]; b = a2[1-curr]; \
if (shift == 0) { \
type_t *p = b, *i, *eb = a + n; \
for (i = a; i < eb; i += 2) { \
if (i == eb - 1) *p++ = *i; \
else { \
if (__sort_lt(*(i+1), *i)) { \
*p++ = *(i+1); *p++ = *i; \
} else { \
*p++ = *i; *p++ = *(i+1); \
} \
} \
} \
} else { \
size_t i, step = 1ul<<shift; \
for (i = 0; i < n; i += step<<1) { \
type_t *p, *j, *k, *ea, *eb; \
if (n < i + step) { \
ea = a + n; eb = a; \
} else { \
ea = a + i + step; \
eb = a + (n < i + (step<<1)? n : i + (step<<1)); \
} \
j = a + i; k = a + i + step; p = b + i; \
while (j < ea && k < eb) { \
if (__sort_lt(*k, *j)) *p++ = *k++; \
else *p++ = *j++; \
} \
while (j < ea) *p++ = *j++; \
while (k < eb) *p++ = *k++; \
} \
} \
curr = 1 - curr; \
} \
if (curr == 1) { \
type_t *p = a2[0], *i = a2[1], *eb = array + n; \
for (; p < eb; ++i) *p++ = *i; \
} \
if (temp == 0) free(a2[1]); \
} \
void ks_heapadjust_##name(size_t i, size_t n, type_t l[]) \
{ \
size_t k = i; \
type_t tmp = l[i]; \
while ((k = (k << 1) + 1) < n) { \
if (k != n - 1 && __sort_lt(l[k], l[k+1])) ++k; \
if (__sort_lt(l[k], tmp)) break; \
l[i] = l[k]; i = k; \
} \
l[i] = tmp; \
} \
void ks_heapmake_##name(size_t lsize, type_t l[]) \
{ \
size_t i; \
for (i = (lsize >> 1) - 1; i != (size_t)(-1); --i) \
ks_heapadjust_##name(i, lsize, l); \
} \
void ks_heapsort_##name(size_t lsize, type_t l[]) \
{ \
size_t i; \
for (i = lsize - 1; i > 0; --i) { \
type_t tmp; \
tmp = *l; *l = l[i]; l[i] = tmp; ks_heapadjust_##name(0, i, l); \
} \
} \
static inline void __ks_insertsort_##name(type_t *s, type_t *t) \
{ \
type_t *i, *j, swap_tmp; \
for (i = s + 1; i < t; ++i) \
for (j = i; j > s && __sort_lt(*j, *(j-1)); --j) { \
swap_tmp = *j; *j = *(j-1); *(j-1) = swap_tmp; \
} \
} \
void ks_combsort_##name(size_t n, type_t a[]) \
{ \
const double shrink_factor = 1.2473309501039786540366528676643; \
int do_swap; \
size_t gap = n; \
type_t tmp, *i, *j; \
do { \
if (gap > 2) { \
gap = (size_t)(gap / shrink_factor); \
if (gap == 9 || gap == 10) gap = 11; \
} \
do_swap = 0; \
for (i = a; i < a + n - gap; ++i) { \
j = i + gap; \
if (__sort_lt(*j, *i)) { \
tmp = *i; *i = *j; *j = tmp; \
do_swap = 1; \
} \
} \
} while (do_swap || gap > 2); \
if (gap != 1) __ks_insertsort_##name(a, a + n); \
} \
void ks_introsort_##name(size_t n, type_t a[]) \
{ \
int d; \
ks_isort_stack_t *top, *stack; \
type_t rp, swap_tmp; \
type_t *s, *t, *i, *j, *k; \
\
if (n < 1) return; \
else if (n == 2) { \
if (__sort_lt(a[1], a[0])) { swap_tmp = a[0]; a[0] = a[1]; a[1] = swap_tmp; } \
return; \
} \
for (d = 2; 1ul<<d < n; ++d); \
stack = (ks_isort_stack_t*)malloc(sizeof(ks_isort_stack_t) * ((sizeof(size_t)*d)+2)); \
top = stack; s = a; t = a + (n-1); d <<= 1; \
while (1) { \
if (s < t) { \
if (--d == 0) { \
ks_combsort_##name(t - s + 1, s); \
t = s; \
continue; \
} \
i = s; j = t; k = i + ((j-i)>>1) + 1; \
if (__sort_lt(*k, *i)) { \
if (__sort_lt(*k, *j)) k = j; \
} else k = __sort_lt(*j, *i)? i : j; \
rp = *k; \
if (k != t) { swap_tmp = *k; *k = *t; *t = swap_tmp; } \
for (;;) { \
do ++i; while (__sort_lt(*i, rp)); \
do --j; while (i <= j && __sort_lt(rp, *j)); \
if (j <= i) break; \
swap_tmp = *i; *i = *j; *j = swap_tmp; \
} \
swap_tmp = *i; *i = *t; *t = swap_tmp; \
if (i-s > t-i) { \
if (i-s > 16) { top->left = s; top->right = i-1; top->depth = d; ++top; } \
s = t-i > 16? i+1 : t; \
} else { \
if (t-i > 16) { top->left = i+1; top->right = t; top->depth = d; ++top; } \
t = i-s > 16? i-1 : s; \
} \
} else { \
if (top == stack) { \
free(stack); \
__ks_insertsort_##name(a, a+n); \
return; \
} else { --top; s = (type_t*)top->left; t = (type_t*)top->right; d = top->depth; } \
} \
} \
} \
/* This function is adapted from: http://ndevilla.free.fr/median/ */ \
/* 0 <= kk < n */ \
type_t ks_ksmall_##name(size_t n, type_t arr[], size_t kk) \
{ \
type_t *low, *high, *k, *ll, *hh, *mid; \
low = arr; high = arr + n - 1; k = arr + kk; \
for (;;) { \
if (high <= low) return *k; \
if (high == low + 1) { \
if (__sort_lt(*high, *low)) KSORT_SWAP(type_t, *low, *high); \
return *k; \
} \
mid = low + (high - low) / 2; \
if (__sort_lt(*high, *mid)) KSORT_SWAP(type_t, *mid, *high); \
if (__sort_lt(*high, *low)) KSORT_SWAP(type_t, *low, *high); \
if (__sort_lt(*low, *mid)) KSORT_SWAP(type_t, *mid, *low); \
KSORT_SWAP(type_t, *mid, *(low+1)); \
ll = low + 1; hh = high; \
for (;;) { \
do ++ll; while (__sort_lt(*ll, *low)); \
do --hh; while (__sort_lt(*low, *hh)); \
if (hh < ll) break; \
KSORT_SWAP(type_t, *ll, *hh); \
} \
KSORT_SWAP(type_t, *low, *hh); \
if (hh <= k) low = ll; \
if (hh >= k) high = hh - 1; \
} \
} \
void ks_shuffle_##name(size_t n, type_t a[]) \
{ \
int i, j; \
for (i = n; i > 1; --i) { \
type_t tmp; \
j = (int)(drand48() * i); \
tmp = a[j]; a[j] = a[i-1]; a[i-1] = tmp; \
} \
} \
void ks_sample_##name(size_t n, size_t r, type_t a[]) /* FIXME: NOT TESTED!!! */ \
{ /* reference: http://code.activestate.com/recipes/272884/ */ \
int i, k, pop = n; \
for (i = (int)r, k = 0; i >= 0; --i) { \
double z = 1., x = drand48(); \
type_t tmp; \
while (x < z) z -= z * i / (pop--); \
if (k != n - pop - 1) tmp = a[k], a[k] = a[n-pop-1], a[n-pop-1] = tmp; \
++k; \
} \
}
#define ks_mergesort(name, n, a, t) ks_mergesort_##name(n, a, t)
#define ks_introsort(name, n, a) ks_introsort_##name(n, a)
#define ks_combsort(name, n, a) ks_combsort_##name(n, a)
#define ks_heapsort(name, n, a) ks_heapsort_##name(n, a)
#define ks_heapmake(name, n, a) ks_heapmake_##name(n, a)
#define ks_heapadjust(name, i, n, a) ks_heapadjust_##name(i, n, a)
#define ks_ksmall(name, n, a, k) ks_ksmall_##name(n, a, k)
#define ks_shuffle(name, n, a) ks_shuffle_##name(n, a)
#define ks_lt_generic(a, b) ((a) < (b))
#define ks_lt_str(a, b) (strcmp((a), (b)) < 0)
typedef const char *ksstr_t;
#define KSORT_INIT_GENERIC(type_t) KSORT_INIT(type_t, type_t, ks_lt_generic)
#define KSORT_INIT_STR KSORT_INIT(str, ksstr_t, ks_lt_str)
#endif

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/* The MIT License
Copyright (c) 2008, by Attractive Chaos <attractor@live.co.uk>
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.
*/
/*
An example:
#include "kvec.h"
int main() {
kvec_t(int) array;
kv_init(array);
kv_push(int, array, 10); // append
kv_a(int, array, 20) = 5; // dynamic
kv_A(array, 20) = 4; // static
kv_destroy(array);
return 0;
}
*/
/*
2008-09-22 (0.1.0):
* The initial version.
*/
#ifndef AC_KVEC_H
#define AC_KVEC_H
#include <stdlib.h>
#define kv_roundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
#define kvec_t(type) struct { size_t n, m; type *a; }
#define kv_init(v) ((v).n = (v).m = 0, (v).a = 0)
#define kv_destroy(v) free((v).a)
#define kv_A(v, i) ((v).a[(i)])
#define kv_pop(v) ((v).a[--(v).n])
#define kv_size(v) ((v).n)
#define kv_max(v) ((v).m)
// `kv_clear` added by Al Barrentine on 2014-11-17
#define kv_clear(v) ((v).n = 0)
#define kv_resize(type, v, s) ((v).m = (s), (v).a = (type*)realloc((v).a, sizeof(type) * (v).m))
#define kv_copy(type, v1, v0) do { \
if ((v1).m < (v0).n) kv_resize(type, v1, (v0).n); \
(v1).n = (v0).n; \
memcpy((v1).a, (v0).a, sizeof(type) * (v0).n); \
} while (0) \
#define kv_push(type, v, x) do { \
if ((v).n == (v).m) { \
(v).m = (v).m? (v).m<<1 : 2; \
(v).a = (type*)realloc((v).a, sizeof(type) * (v).m); \
} \
(v).a[(v).n++] = (x); \
} while (0)
#define kv_pushp(type, v) (((v).n == (v).m)? \
((v).m = ((v).m? (v).m<<1 : 2), \
(v).a = (type*)realloc((v).a, sizeof(type) * (v).m), 0) \
: 0), ((v).a + ((v).n++))
#define kv_a(type, v, i) (((v).m <= (size_t)(i)? \
((v).m = (v).n = (i) + 1, kv_roundup32((v).m), \
(v).a = (type*)realloc((v).a, sizeof(type) * (v).m), 0) \
: (v).n <= (size_t)(i)? (v).n = (i) + 1 \
: 0), (v).a[(i)])
#endif