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Moved vendor sources to lib/vendor
This commit is contained in:
936
lib/vendor/hashmap.c
vendored
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936
lib/vendor/hashmap.c
vendored
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@@ -0,0 +1,936 @@
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// Copyright 2020 Joshua J Baker. All rights reserved.
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stddef.h>
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#include "hashmap.h"
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static void *(*_malloc)(size_t) = NULL;
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static void *(*_realloc)(void *, size_t) = NULL;
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static void (*_free)(void *) = NULL;
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// hashmap_set_allocator allows for configuring a custom allocator for
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// all hashmap library operations. This function, if needed, should be called
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// only once at startup and a prior to calling hashmap_new().
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void hashmap_set_allocator(void *(*malloc)(size_t), void (*free)(void*))
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{
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_malloc = malloc;
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_free = free;
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}
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#define panic(_msg_) { \
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/*fprintf(stderr, "panic: %s (%s:%d)\n", (_msg_), __FILE__, __LINE__);*/ \
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exit(1); \
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}
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struct bucket {
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uint64_t hash:48;
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uint64_t dib:16;
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};
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// hashmap is an open addressed hash map using robinhood hashing.
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struct hashmap {
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void *(*malloc)(size_t);
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void *(*realloc)(void *, size_t);
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void (*free)(void *);
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bool oom;
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size_t elsize;
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size_t cap;
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uint64_t seed0;
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uint64_t seed1;
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uint64_t (*hash)(const void *item, uint64_t seed0, uint64_t seed1);
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int (*compare)(const void *a, const void *b, void *udata);
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void (*elfree)(void *item);
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void *udata;
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size_t bucketsz;
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size_t nbuckets;
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size_t count;
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size_t mask;
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size_t growat;
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size_t shrinkat;
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void *buckets;
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void *spare;
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void *edata;
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};
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static struct bucket *bucket_at(struct hashmap *map, size_t index) {
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return (struct bucket*)(((char*)map->buckets)+(map->bucketsz*index));
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}
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static void *bucket_item(struct bucket *entry) {
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return ((char*)entry)+sizeof(struct bucket);
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}
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static uint64_t get_hash(struct hashmap *map, const void *key) {
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return map->hash(key, map->seed0, map->seed1) << 16 >> 16;
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}
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// hashmap_new_with_allocator returns a new hash map using a custom allocator.
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// See hashmap_new for more information information
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struct hashmap *hashmap_new_with_allocator(
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void *(*_malloc)(size_t),
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void *(*_realloc)(void*, size_t),
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void (*_free)(void*),
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size_t elsize, size_t cap,
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uint64_t seed0, uint64_t seed1,
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uint64_t (*hash)(const void *item,
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uint64_t seed0, uint64_t seed1),
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int (*compare)(const void *a, const void *b,
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void *udata),
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void (*elfree)(void *item),
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void *udata)
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{
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_malloc = _malloc ? _malloc : malloc;
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_realloc = _realloc ? _realloc : realloc;
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_free = _free ? _free : free;
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int ncap = 16;
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if (cap < ncap) {
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cap = ncap;
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} else {
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while (ncap < cap) {
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ncap *= 2;
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}
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cap = ncap;
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}
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size_t bucketsz = sizeof(struct bucket) + elsize;
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while (bucketsz & (sizeof(uintptr_t)-1)) {
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bucketsz++;
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}
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// hashmap + spare + edata
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size_t size = sizeof(struct hashmap)+bucketsz*2;
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struct hashmap *map = _malloc(size);
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if (!map) {
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return NULL;
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}
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memset(map, 0, sizeof(struct hashmap));
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map->elsize = elsize;
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map->bucketsz = bucketsz;
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map->seed0 = seed0;
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map->seed1 = seed1;
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map->hash = hash;
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map->compare = compare;
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map->elfree = elfree;
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map->udata = udata;
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map->spare = ((char*)map)+sizeof(struct hashmap);
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map->edata = (char*)map->spare+bucketsz;
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map->cap = cap;
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map->nbuckets = cap;
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map->mask = map->nbuckets-1;
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map->buckets = _malloc(map->bucketsz*map->nbuckets);
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if (!map->buckets) {
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_free(map);
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return NULL;
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}
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memset(map->buckets, 0, map->bucketsz*map->nbuckets);
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map->growat = map->nbuckets*0.75;
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map->shrinkat = map->nbuckets*0.10;
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map->malloc = _malloc;
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map->realloc = _realloc;
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map->free = _free;
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return map;
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}
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// hashmap_new returns a new hash map.
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// Param `elsize` is the size of each element in the tree. Every element that
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// is inserted, deleted, or retrieved will be this size.
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// Param `cap` is the default lower capacity of the hashmap. Setting this to
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// zero will default to 16.
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// Params `seed0` and `seed1` are optional seed values that are passed to the
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// following `hash` function. These can be any value you wish but it's often
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// best to use randomly generated values.
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// Param `hash` is a function that generates a hash value for an item. It's
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// important that you provide a good hash function, otherwise it will perform
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// poorly or be vulnerable to Denial-of-service attacks. This implementation
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// comes with two helper functions `hashmap_sip()` and `hashmap_murmur()`.
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// Param `compare` is a function that compares items in the tree. See the
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// qsort stdlib function for an example of how this function works.
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// The hashmap must be freed with hashmap_free().
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// Param `elfree` is a function that frees a specific item. This should be NULL
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// unless you're storing some kind of reference data in the hash.
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struct hashmap *hashmap_new(size_t elsize, size_t cap,
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uint64_t seed0, uint64_t seed1,
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uint64_t (*hash)(const void *item,
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uint64_t seed0, uint64_t seed1),
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int (*compare)(const void *a, const void *b,
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void *udata),
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void (*elfree)(void *item),
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void *udata)
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{
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return hashmap_new_with_allocator(
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(_malloc?_malloc:malloc),
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(_realloc?_realloc:realloc),
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(_free?_free:free),
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elsize, cap, seed0, seed1, hash, compare, elfree, udata
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);
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}
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static void free_elements(struct hashmap *map) {
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if (map->elfree) {
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for (size_t i = 0; i < map->nbuckets; i++) {
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struct bucket *bucket = bucket_at(map, i);
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if (bucket->dib) map->elfree(bucket_item(bucket));
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}
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}
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}
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// hashmap_clear quickly clears the map.
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// Every item is called with the element-freeing function given in hashmap_new,
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// if present, to free any data referenced in the elements of the hashmap.
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// When the update_cap is provided, the map's capacity will be updated to match
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// the currently number of allocated buckets. This is an optimization to ensure
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// that this operation does not perform any allocations.
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void hashmap_clear(struct hashmap *map, bool update_cap) {
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map->count = 0;
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free_elements(map);
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if (update_cap) {
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map->cap = map->nbuckets;
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} else if (map->nbuckets != map->cap) {
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void *new_buckets = map->malloc(map->bucketsz*map->cap);
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if (new_buckets) {
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map->free(map->buckets);
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map->buckets = new_buckets;
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}
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map->nbuckets = map->cap;
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}
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memset(map->buckets, 0, map->bucketsz*map->nbuckets);
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map->mask = map->nbuckets-1;
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map->growat = map->nbuckets*0.75;
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map->shrinkat = map->nbuckets*0.10;
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}
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static bool resize(struct hashmap *map, size_t new_cap) {
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struct hashmap *map2 = hashmap_new(map->elsize, new_cap, map->seed1,
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map->seed1, map->hash, map->compare,
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map->elfree, map->udata);
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if (!map2) {
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return false;
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}
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for (size_t i = 0; i < map->nbuckets; i++) {
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struct bucket *entry = bucket_at(map, i);
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if (!entry->dib) {
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continue;
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}
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entry->dib = 1;
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size_t j = entry->hash & map2->mask;
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for (;;) {
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struct bucket *bucket = bucket_at(map2, j);
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if (bucket->dib == 0) {
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memcpy(bucket, entry, map->bucketsz);
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break;
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}
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if (bucket->dib < entry->dib) {
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memcpy(map2->spare, bucket, map->bucketsz);
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memcpy(bucket, entry, map->bucketsz);
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memcpy(entry, map2->spare, map->bucketsz);
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}
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j = (j + 1) & map2->mask;
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entry->dib += 1;
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}
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}
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map->free(map->buckets);
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map->buckets = map2->buckets;
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map->nbuckets = map2->nbuckets;
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map->mask = map2->mask;
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map->growat = map2->growat;
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map->shrinkat = map2->shrinkat;
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map->free(map2);
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return true;
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}
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// hashmap_set inserts or replaces an item in the hash map. If an item is
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// replaced then it is returned otherwise NULL is returned. This operation
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// may allocate memory. If the system is unable to allocate additional
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// memory then NULL is returned and hashmap_oom() returns true.
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void *hashmap_set(struct hashmap *map, void *item) {
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if (!item) {
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panic("item is null");
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}
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map->oom = false;
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if (map->count == map->growat) {
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if (!resize(map, map->nbuckets*2)) {
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map->oom = true;
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return NULL;
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}
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}
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struct bucket *entry = map->edata;
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entry->hash = get_hash(map, item);
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entry->dib = 1;
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memcpy(bucket_item(entry), item, map->elsize);
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size_t i = entry->hash & map->mask;
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for (;;) {
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struct bucket *bucket = bucket_at(map, i);
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if (bucket->dib == 0) {
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memcpy(bucket, entry, map->bucketsz);
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map->count++;
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return NULL;
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}
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if (entry->hash == bucket->hash &&
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map->compare(bucket_item(entry), bucket_item(bucket),
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map->udata) == 0)
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{
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memcpy(map->spare, bucket_item(bucket), map->elsize);
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memcpy(bucket_item(bucket), bucket_item(entry), map->elsize);
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return map->spare;
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}
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if (bucket->dib < entry->dib) {
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memcpy(map->spare, bucket, map->bucketsz);
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memcpy(bucket, entry, map->bucketsz);
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memcpy(entry, map->spare, map->bucketsz);
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}
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i = (i + 1) & map->mask;
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entry->dib += 1;
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}
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}
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// hashmap_get returns the item based on the provided key. If the item is not
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// found then NULL is returned.
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void *hashmap_get(struct hashmap *map, const void *key) {
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if (!key) {
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panic("key is null");
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}
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uint64_t hash = get_hash(map, key);
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size_t i = hash & map->mask;
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for (;;) {
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struct bucket *bucket = bucket_at(map, i);
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if (!bucket->dib) {
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return NULL;
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}
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if (bucket->hash == hash &&
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map->compare(key, bucket_item(bucket), map->udata) == 0)
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{
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return bucket_item(bucket);
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}
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i = (i + 1) & map->mask;
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}
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}
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// hashmap_probe returns the item in the bucket at position or NULL if an item
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// is not set for that bucket. The position is 'moduloed' by the number of
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// buckets in the hashmap.
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void *hashmap_probe(struct hashmap *map, uint64_t position) {
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size_t i = position & map->mask;
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struct bucket *bucket = bucket_at(map, i);
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if (!bucket->dib) {
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return NULL;
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}
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return bucket_item(bucket);
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}
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// hashmap_delete removes an item from the hash map and returns it. If the
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// item is not found then NULL is returned.
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void *hashmap_delete(struct hashmap *map, void *key) {
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if (!key) {
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panic("key is null");
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}
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map->oom = false;
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uint64_t hash = get_hash(map, key);
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size_t i = hash & map->mask;
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for (;;) {
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struct bucket *bucket = bucket_at(map, i);
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if (!bucket->dib) {
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return NULL;
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}
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if (bucket->hash == hash &&
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map->compare(key, bucket_item(bucket), map->udata) == 0)
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||||
{
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memcpy(map->spare, bucket_item(bucket), map->elsize);
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bucket->dib = 0;
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for (;;) {
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struct bucket *prev = bucket;
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i = (i + 1) & map->mask;
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bucket = bucket_at(map, i);
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if (bucket->dib <= 1) {
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prev->dib = 0;
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break;
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||||
}
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memcpy(prev, bucket, map->bucketsz);
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||||
prev->dib--;
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||||
}
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||||
map->count--;
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if (map->nbuckets > map->cap && map->count <= map->shrinkat) {
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// Ignore the return value. It's ok for the resize operation to
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||||
// fail to allocate enough memory because a shrink operation
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||||
// does not change the integrity of the data.
|
||||
resize(map, map->nbuckets/2);
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||||
}
|
||||
return map->spare;
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||||
}
|
||||
i = (i + 1) & map->mask;
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||||
}
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||||
}
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||||
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// hashmap_count returns the number of items in the hash map.
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size_t hashmap_count(struct hashmap *map) {
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||||
return map->count;
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||||
}
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||||
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||||
// hashmap_free frees the hash map
|
||||
// Every item is called with the element-freeing function given in hashmap_new,
|
||||
// if present, to free any data referenced in the elements of the hashmap.
|
||||
void hashmap_free(struct hashmap *map) {
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||||
if (!map) return;
|
||||
free_elements(map);
|
||||
map->free(map->buckets);
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||||
map->free(map);
|
||||
}
|
||||
|
||||
// hashmap_oom returns true if the last hashmap_set() call failed due to the
|
||||
// system being out of memory.
|
||||
bool hashmap_oom(struct hashmap *map) {
|
||||
return map->oom;
|
||||
}
|
||||
|
||||
// hashmap_scan iterates over all items in the hash map
|
||||
// Param `iter` can return false to stop iteration early.
|
||||
// Returns false if the iteration has been stopped early.
|
||||
bool hashmap_scan(struct hashmap *map,
|
||||
bool (*iter)(const void *item, void *udata), void *udata)
|
||||
{
|
||||
for (size_t i = 0; i < map->nbuckets; i++) {
|
||||
struct bucket *bucket = bucket_at(map, i);
|
||||
if (bucket->dib) {
|
||||
if (!iter(bucket_item(bucket), udata)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// SipHash reference C implementation
|
||||
//
|
||||
// Copyright (c) 2012-2016 Jean-Philippe Aumasson
|
||||
// <jeanphilippe.aumasson@gmail.com>
|
||||
// Copyright (c) 2012-2014 Daniel J. Bernstein <djb@cr.yp.to>
|
||||
//
|
||||
// To the extent possible under law, the author(s) have dedicated all copyright
|
||||
// and related and neighboring rights to this software to the public domain
|
||||
// worldwide. This software is distributed without any warranty.
|
||||
//
|
||||
// You should have received a copy of the CC0 Public Domain Dedication along
|
||||
// with this software. If not, see
|
||||
// <http://creativecommons.org/publicdomain/zero/1.0/>.
|
||||
//
|
||||
// default: SipHash-2-4
|
||||
//-----------------------------------------------------------------------------
|
||||
static uint64_t SIP64(const uint8_t *in, const size_t inlen,
|
||||
uint64_t seed0, uint64_t seed1)
|
||||
{
|
||||
#define U8TO64_LE(p) \
|
||||
{ (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8) | \
|
||||
((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) | \
|
||||
((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) | \
|
||||
((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56)) }
|
||||
#define U64TO8_LE(p, v) \
|
||||
{ U32TO8_LE((p), (uint32_t)((v))); \
|
||||
U32TO8_LE((p) + 4, (uint32_t)((v) >> 32)); }
|
||||
#define U32TO8_LE(p, v) \
|
||||
{ (p)[0] = (uint8_t)((v)); \
|
||||
(p)[1] = (uint8_t)((v) >> 8); \
|
||||
(p)[2] = (uint8_t)((v) >> 16); \
|
||||
(p)[3] = (uint8_t)((v) >> 24); }
|
||||
#define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))
|
||||
#define SIPROUND \
|
||||
{ v0 += v1; v1 = ROTL(v1, 13); \
|
||||
v1 ^= v0; v0 = ROTL(v0, 32); \
|
||||
v2 += v3; v3 = ROTL(v3, 16); \
|
||||
v3 ^= v2; \
|
||||
v0 += v3; v3 = ROTL(v3, 21); \
|
||||
v3 ^= v0; \
|
||||
v2 += v1; v1 = ROTL(v1, 17); \
|
||||
v1 ^= v2; v2 = ROTL(v2, 32); }
|
||||
uint64_t k0 = U8TO64_LE((uint8_t*)&seed0);
|
||||
uint64_t k1 = U8TO64_LE((uint8_t*)&seed1);
|
||||
uint64_t v3 = UINT64_C(0x7465646279746573) ^ k1;
|
||||
uint64_t v2 = UINT64_C(0x6c7967656e657261) ^ k0;
|
||||
uint64_t v1 = UINT64_C(0x646f72616e646f6d) ^ k1;
|
||||
uint64_t v0 = UINT64_C(0x736f6d6570736575) ^ k0;
|
||||
const uint8_t *end = in + inlen - (inlen % sizeof(uint64_t));
|
||||
for (; in != end; in += 8) {
|
||||
uint64_t m = U8TO64_LE(in);
|
||||
v3 ^= m;
|
||||
SIPROUND; SIPROUND;
|
||||
v0 ^= m;
|
||||
}
|
||||
const int left = inlen & 7;
|
||||
uint64_t b = ((uint64_t)inlen) << 56;
|
||||
switch (left) {
|
||||
case 7: b |= ((uint64_t)in[6]) << 48;
|
||||
case 6: b |= ((uint64_t)in[5]) << 40;
|
||||
case 5: b |= ((uint64_t)in[4]) << 32;
|
||||
case 4: b |= ((uint64_t)in[3]) << 24;
|
||||
case 3: b |= ((uint64_t)in[2]) << 16;
|
||||
case 2: b |= ((uint64_t)in[1]) << 8;
|
||||
case 1: b |= ((uint64_t)in[0]); break;
|
||||
case 0: break;
|
||||
}
|
||||
v3 ^= b;
|
||||
SIPROUND; SIPROUND;
|
||||
v0 ^= b;
|
||||
v2 ^= 0xff;
|
||||
SIPROUND; SIPROUND; SIPROUND; SIPROUND;
|
||||
b = v0 ^ v1 ^ v2 ^ v3;
|
||||
uint64_t out = 0;
|
||||
U64TO8_LE((uint8_t*)&out, b);
|
||||
return out;
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// MurmurHash3 was written by Austin Appleby, and is placed in the public
|
||||
// domain. The author hereby disclaims copyright to this source code.
|
||||
//
|
||||
// Murmur3_86_128
|
||||
//-----------------------------------------------------------------------------
|
||||
static void MM86128(const void *key, const int len, uint32_t seed, void *out) {
|
||||
#define ROTL32(x, r) ((x << r) | (x >> (32 - r)))
|
||||
#define FMIX32(h) h^=h>>16; h*=0x85ebca6b; h^=h>>13; h*=0xc2b2ae35; h^=h>>16;
|
||||
const uint8_t * data = (const uint8_t*)key;
|
||||
const int nblocks = len / 16;
|
||||
uint32_t h1 = seed;
|
||||
uint32_t h2 = seed;
|
||||
uint32_t h3 = seed;
|
||||
uint32_t h4 = seed;
|
||||
uint32_t c1 = 0x239b961b;
|
||||
uint32_t c2 = 0xab0e9789;
|
||||
uint32_t c3 = 0x38b34ae5;
|
||||
uint32_t c4 = 0xa1e38b93;
|
||||
const uint32_t * blocks = (const uint32_t *)(data + nblocks*16);
|
||||
for (int i = -nblocks; i; i++) {
|
||||
uint32_t k1 = blocks[i*4+0];
|
||||
uint32_t k2 = blocks[i*4+1];
|
||||
uint32_t k3 = blocks[i*4+2];
|
||||
uint32_t k4 = blocks[i*4+3];
|
||||
k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
|
||||
h1 = ROTL32(h1,19); h1 += h2; h1 = h1*5+0x561ccd1b;
|
||||
k2 *= c2; k2 = ROTL32(k2,16); k2 *= c3; h2 ^= k2;
|
||||
h2 = ROTL32(h2,17); h2 += h3; h2 = h2*5+0x0bcaa747;
|
||||
k3 *= c3; k3 = ROTL32(k3,17); k3 *= c4; h3 ^= k3;
|
||||
h3 = ROTL32(h3,15); h3 += h4; h3 = h3*5+0x96cd1c35;
|
||||
k4 *= c4; k4 = ROTL32(k4,18); k4 *= c1; h4 ^= k4;
|
||||
h4 = ROTL32(h4,13); h4 += h1; h4 = h4*5+0x32ac3b17;
|
||||
}
|
||||
const uint8_t * tail = (const uint8_t*)(data + nblocks*16);
|
||||
uint32_t k1 = 0;
|
||||
uint32_t k2 = 0;
|
||||
uint32_t k3 = 0;
|
||||
uint32_t k4 = 0;
|
||||
switch(len & 15) {
|
||||
case 15: k4 ^= tail[14] << 16;
|
||||
case 14: k4 ^= tail[13] << 8;
|
||||
case 13: k4 ^= tail[12] << 0;
|
||||
k4 *= c4; k4 = ROTL32(k4,18); k4 *= c1; h4 ^= k4;
|
||||
case 12: k3 ^= tail[11] << 24;
|
||||
case 11: k3 ^= tail[10] << 16;
|
||||
case 10: k3 ^= tail[ 9] << 8;
|
||||
case 9: k3 ^= tail[ 8] << 0;
|
||||
k3 *= c3; k3 = ROTL32(k3,17); k3 *= c4; h3 ^= k3;
|
||||
case 8: k2 ^= tail[ 7] << 24;
|
||||
case 7: k2 ^= tail[ 6] << 16;
|
||||
case 6: k2 ^= tail[ 5] << 8;
|
||||
case 5: k2 ^= tail[ 4] << 0;
|
||||
k2 *= c2; k2 = ROTL32(k2,16); k2 *= c3; h2 ^= k2;
|
||||
case 4: k1 ^= tail[ 3] << 24;
|
||||
case 3: k1 ^= tail[ 2] << 16;
|
||||
case 2: k1 ^= tail[ 1] << 8;
|
||||
case 1: k1 ^= tail[ 0] << 0;
|
||||
k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
|
||||
};
|
||||
h1 ^= len; h2 ^= len; h3 ^= len; h4 ^= len;
|
||||
h1 += h2; h1 += h3; h1 += h4;
|
||||
h2 += h1; h3 += h1; h4 += h1;
|
||||
FMIX32(h1); FMIX32(h2); FMIX32(h3); FMIX32(h4);
|
||||
h1 += h2; h1 += h3; h1 += h4;
|
||||
h2 += h1; h3 += h1; h4 += h1;
|
||||
((uint32_t*)out)[0] = h1;
|
||||
((uint32_t*)out)[1] = h2;
|
||||
((uint32_t*)out)[2] = h3;
|
||||
((uint32_t*)out)[3] = h4;
|
||||
}
|
||||
|
||||
// hashmap_sip returns a hash value for `data` using SipHash-2-4.
|
||||
uint64_t hashmap_sip(const void *data, size_t len,
|
||||
uint64_t seed0, uint64_t seed1)
|
||||
{
|
||||
return SIP64((uint8_t*)data, len, seed0, seed1);
|
||||
}
|
||||
|
||||
// hashmap_murmur returns a hash value for `data` using Murmur3_86_128.
|
||||
uint64_t hashmap_murmur(const void *data, size_t len,
|
||||
uint64_t seed0, uint64_t seed1)
|
||||
{
|
||||
char out[16];
|
||||
MM86128(data, len, seed0, &out);
|
||||
return *(uint64_t*)out;
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
// TESTS AND BENCHMARKS
|
||||
// $ cc -DHASHMAP_TEST hashmap.c && ./a.out # run tests
|
||||
// $ cc -DHASHMAP_TEST -O3 hashmap.c && BENCH=1 ./a.out # run benchmarks
|
||||
//==============================================================================
|
||||
#ifdef HASHMAP_TEST
|
||||
|
||||
static size_t deepcount(struct hashmap *map) {
|
||||
size_t count = 0;
|
||||
for (size_t i = 0; i < map->nbuckets; i++) {
|
||||
if (bucket_at(map, i)->dib) {
|
||||
count++;
|
||||
}
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
|
||||
#pragma GCC diagnostic ignored "-Wextra"
|
||||
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <assert.h>
|
||||
#include <stdio.h>
|
||||
#include "hashmap.h"
|
||||
|
||||
static bool rand_alloc_fail = false;
|
||||
static int rand_alloc_fail_odds = 3; // 1 in 3 chance malloc will fail.
|
||||
static uintptr_t total_allocs = 0;
|
||||
static uintptr_t total_mem = 0;
|
||||
|
||||
static void *xmalloc(size_t size) {
|
||||
if (rand_alloc_fail && rand()%rand_alloc_fail_odds == 0) {
|
||||
return NULL;
|
||||
}
|
||||
void *mem = malloc(sizeof(uintptr_t)+size);
|
||||
assert(mem);
|
||||
*(uintptr_t*)mem = size;
|
||||
total_allocs++;
|
||||
total_mem += size;
|
||||
return (char*)mem+sizeof(uintptr_t);
|
||||
}
|
||||
|
||||
static void xfree(void *ptr) {
|
||||
if (ptr) {
|
||||
total_mem -= *(uintptr_t*)((char*)ptr-sizeof(uintptr_t));
|
||||
free((char*)ptr-sizeof(uintptr_t));
|
||||
total_allocs--;
|
||||
}
|
||||
}
|
||||
|
||||
static void shuffle(void *array, size_t numels, size_t elsize) {
|
||||
char tmp[elsize];
|
||||
char *arr = array;
|
||||
for (size_t i = 0; i < numels - 1; i++) {
|
||||
int j = i + rand() / (RAND_MAX / (numels - i) + 1);
|
||||
memcpy(tmp, arr + j * elsize, elsize);
|
||||
memcpy(arr + j * elsize, arr + i * elsize, elsize);
|
||||
memcpy(arr + i * elsize, tmp, elsize);
|
||||
}
|
||||
}
|
||||
|
||||
static bool iter_ints(const void *item, void *udata) {
|
||||
int *vals = *(int**)udata;
|
||||
vals[*(int*)item] = 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
static int compare_ints(const void *a, const void *b) {
|
||||
return *(int*)a - *(int*)b;
|
||||
}
|
||||
|
||||
static int compare_ints_udata(const void *a, const void *b, void *udata) {
|
||||
return *(int*)a - *(int*)b;
|
||||
}
|
||||
|
||||
static int compare_strs(const void *a, const void *b, void *udata) {
|
||||
return strcmp(*(char**)a, *(char**)b);
|
||||
}
|
||||
|
||||
static uint64_t hash_int(const void *item, uint64_t seed0, uint64_t seed1) {
|
||||
return hashmap_murmur(item, sizeof(int), seed0, seed1);
|
||||
}
|
||||
|
||||
static uint64_t hash_str(const void *item, uint64_t seed0, uint64_t seed1) {
|
||||
return hashmap_murmur(*(char**)item, strlen(*(char**)item), seed0, seed1);
|
||||
}
|
||||
|
||||
static void free_str(void *item) {
|
||||
xfree(*(char**)item);
|
||||
}
|
||||
|
||||
static void all() {
|
||||
int seed = getenv("SEED")?atoi(getenv("SEED")):time(NULL);
|
||||
int N = getenv("N")?atoi(getenv("N")):2000;
|
||||
printf("seed=%d, count=%d, item_size=%zu\n", seed, N, sizeof(int));
|
||||
srand(seed);
|
||||
|
||||
rand_alloc_fail = true;
|
||||
|
||||
// test sip and murmur hashes
|
||||
assert(hashmap_sip("hello", 5, 1, 2) == 2957200328589801622);
|
||||
assert(hashmap_murmur("hello", 5, 1, 2) == 1682575153221130884);
|
||||
|
||||
int *vals;
|
||||
while (!(vals = xmalloc(N * sizeof(int)))) {}
|
||||
for (int i = 0; i < N; i++) {
|
||||
vals[i] = i;
|
||||
}
|
||||
|
||||
struct hashmap *map;
|
||||
|
||||
while (!(map = hashmap_new(sizeof(int), 0, seed, seed,
|
||||
hash_int, compare_ints_udata, NULL, NULL))) {}
|
||||
shuffle(vals, N, sizeof(int));
|
||||
for (int i = 0; i < N; i++) {
|
||||
// // printf("== %d ==\n", vals[i]);
|
||||
assert(map->count == i);
|
||||
assert(map->count == hashmap_count(map));
|
||||
assert(map->count == deepcount(map));
|
||||
int *v;
|
||||
assert(!hashmap_get(map, &vals[i]));
|
||||
assert(!hashmap_delete(map, &vals[i]));
|
||||
while (true) {
|
||||
assert(!hashmap_set(map, &vals[i]));
|
||||
if (!hashmap_oom(map)) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
for (int j = 0; j < i; j++) {
|
||||
v = hashmap_get(map, &vals[j]);
|
||||
assert(v && *v == vals[j]);
|
||||
}
|
||||
while (true) {
|
||||
v = hashmap_set(map, &vals[i]);
|
||||
if (!v) {
|
||||
assert(hashmap_oom(map));
|
||||
continue;
|
||||
} else {
|
||||
assert(!hashmap_oom(map));
|
||||
assert(v && *v == vals[i]);
|
||||
break;
|
||||
}
|
||||
}
|
||||
v = hashmap_get(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
v = hashmap_delete(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
assert(!hashmap_get(map, &vals[i]));
|
||||
assert(!hashmap_delete(map, &vals[i]));
|
||||
assert(!hashmap_set(map, &vals[i]));
|
||||
assert(map->count == i+1);
|
||||
assert(map->count == hashmap_count(map));
|
||||
assert(map->count == deepcount(map));
|
||||
}
|
||||
|
||||
int *vals2;
|
||||
while (!(vals2 = xmalloc(N * sizeof(int)))) {}
|
||||
memset(vals2, 0, N * sizeof(int));
|
||||
assert(hashmap_scan(map, iter_ints, &vals2));
|
||||
for (int i = 0; i < N; i++) {
|
||||
assert(vals2[i] == 1);
|
||||
}
|
||||
xfree(vals2);
|
||||
|
||||
shuffle(vals, N, sizeof(int));
|
||||
for (int i = 0; i < N; i++) {
|
||||
int *v;
|
||||
v = hashmap_delete(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
assert(!hashmap_get(map, &vals[i]));
|
||||
assert(map->count == N-i-1);
|
||||
assert(map->count == hashmap_count(map));
|
||||
assert(map->count == deepcount(map));
|
||||
for (int j = N-1; j > i; j--) {
|
||||
v = hashmap_get(map, &vals[j]);
|
||||
assert(v && *v == vals[j]);
|
||||
}
|
||||
}
|
||||
|
||||
for (int i = 0; i < N; i++) {
|
||||
while (true) {
|
||||
assert(!hashmap_set(map, &vals[i]));
|
||||
if (!hashmap_oom(map)) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
assert(map->count != 0);
|
||||
size_t prev_cap = map->cap;
|
||||
hashmap_clear(map, true);
|
||||
assert(prev_cap < map->cap);
|
||||
assert(map->count == 0);
|
||||
|
||||
|
||||
for (int i = 0; i < N; i++) {
|
||||
while (true) {
|
||||
assert(!hashmap_set(map, &vals[i]));
|
||||
if (!hashmap_oom(map)) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
prev_cap = map->cap;
|
||||
hashmap_clear(map, false);
|
||||
assert(prev_cap == map->cap);
|
||||
|
||||
hashmap_free(map);
|
||||
|
||||
xfree(vals);
|
||||
|
||||
|
||||
while (!(map = hashmap_new(sizeof(char*), 0, seed, seed,
|
||||
hash_str, compare_strs, free_str, NULL)));
|
||||
|
||||
for (int i = 0; i < N; i++) {
|
||||
char *str;
|
||||
while (!(str = xmalloc(16)));
|
||||
sprintf(str, "s%i", i);
|
||||
while(!hashmap_set(map, &str));
|
||||
}
|
||||
|
||||
hashmap_clear(map, false);
|
||||
assert(hashmap_count(map) == 0);
|
||||
|
||||
for (int i = 0; i < N; i++) {
|
||||
char *str;
|
||||
while (!(str = xmalloc(16)));
|
||||
sprintf(str, "s%i", i);
|
||||
while(!hashmap_set(map, &str));
|
||||
}
|
||||
|
||||
hashmap_free(map);
|
||||
|
||||
if (total_allocs != 0) {
|
||||
fprintf(stderr, "total_allocs: expected 0, got %lu\n", total_allocs);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
#define bench(name, N, code) {{ \
|
||||
if (strlen(name) > 0) { \
|
||||
printf("%-14s ", name); \
|
||||
} \
|
||||
size_t tmem = total_mem; \
|
||||
size_t tallocs = total_allocs; \
|
||||
uint64_t bytes = 0; \
|
||||
clock_t begin = clock(); \
|
||||
for (int i = 0; i < N; i++) { \
|
||||
(code); \
|
||||
} \
|
||||
clock_t end = clock(); \
|
||||
double elapsed_secs = (double)(end - begin) / CLOCKS_PER_SEC; \
|
||||
double bytes_sec = (double)bytes/elapsed_secs; \
|
||||
printf("%d ops in %.3f secs, %.0f ns/op, %.0f op/sec", \
|
||||
N, elapsed_secs, \
|
||||
elapsed_secs/(double)N*1e9, \
|
||||
(double)N/elapsed_secs \
|
||||
); \
|
||||
if (bytes > 0) { \
|
||||
printf(", %.1f GB/sec", bytes_sec/1024/1024/1024); \
|
||||
} \
|
||||
if (total_mem > tmem) { \
|
||||
size_t used_mem = total_mem-tmem; \
|
||||
printf(", %.2f bytes/op", (double)used_mem/N); \
|
||||
} \
|
||||
if (total_allocs > tallocs) { \
|
||||
size_t used_allocs = total_allocs-tallocs; \
|
||||
printf(", %.2f allocs/op", (double)used_allocs/N); \
|
||||
} \
|
||||
printf("\n"); \
|
||||
}}
|
||||
|
||||
static void benchmarks() {
|
||||
int seed = getenv("SEED")?atoi(getenv("SEED")):time(NULL);
|
||||
int N = getenv("N")?atoi(getenv("N")):5000000;
|
||||
printf("seed=%d, count=%d, item_size=%zu\n", seed, N, sizeof(int));
|
||||
srand(seed);
|
||||
|
||||
|
||||
int *vals = xmalloc(N * sizeof(int));
|
||||
for (int i = 0; i < N; i++) {
|
||||
vals[i] = i;
|
||||
}
|
||||
|
||||
shuffle(vals, N, sizeof(int));
|
||||
|
||||
struct hashmap *map;
|
||||
shuffle(vals, N, sizeof(int));
|
||||
|
||||
map = hashmap_new(sizeof(int), 0, seed, seed, hash_int, compare_ints_udata,
|
||||
NULL, NULL);
|
||||
bench("set", N, {
|
||||
int *v = hashmap_set(map, &vals[i]);
|
||||
assert(!v);
|
||||
})
|
||||
shuffle(vals, N, sizeof(int));
|
||||
bench("get", N, {
|
||||
int *v = hashmap_get(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
})
|
||||
shuffle(vals, N, sizeof(int));
|
||||
bench("delete", N, {
|
||||
int *v = hashmap_delete(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
})
|
||||
hashmap_free(map);
|
||||
|
||||
map = hashmap_new(sizeof(int), N, seed, seed, hash_int, compare_ints_udata,
|
||||
NULL, NULL);
|
||||
bench("set (cap)", N, {
|
||||
int *v = hashmap_set(map, &vals[i]);
|
||||
assert(!v);
|
||||
})
|
||||
shuffle(vals, N, sizeof(int));
|
||||
bench("get (cap)", N, {
|
||||
int *v = hashmap_get(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
})
|
||||
shuffle(vals, N, sizeof(int));
|
||||
bench("delete (cap)" , N, {
|
||||
int *v = hashmap_delete(map, &vals[i]);
|
||||
assert(v && *v == vals[i]);
|
||||
})
|
||||
|
||||
hashmap_free(map);
|
||||
|
||||
|
||||
xfree(vals);
|
||||
|
||||
if (total_allocs != 0) {
|
||||
fprintf(stderr, "total_allocs: expected 0, got %lu\n", total_allocs);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
int main() {
|
||||
hashmap_set_allocator(xmalloc, xfree);
|
||||
|
||||
if (getenv("BENCH")) {
|
||||
printf("Running hashmap.c benchmarks...\n");
|
||||
benchmarks();
|
||||
} else {
|
||||
printf("Running hashmap.c tests...\n");
|
||||
all();
|
||||
printf("PASSED\n");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
|
298
lib/vendor/ini.c
vendored
Normal file
298
lib/vendor/ini.c
vendored
Normal file
@@ -0,0 +1,298 @@
|
||||
/* inih -- simple .INI file parser
|
||||
|
||||
SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
Copyright (C) 2009-2020, Ben Hoyt
|
||||
|
||||
inih is released under the New BSD license (see LICENSE.txt). Go to the project
|
||||
home page for more info:
|
||||
|
||||
https://github.com/benhoyt/inih
|
||||
|
||||
*/
|
||||
|
||||
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
|
||||
#define _CRT_SECURE_NO_WARNINGS
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <ctype.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "ini.h"
|
||||
|
||||
#if !INI_USE_STACK
|
||||
#if INI_CUSTOM_ALLOCATOR
|
||||
#include <stddef.h>
|
||||
void* ini_malloc(size_t size);
|
||||
void ini_free(void* ptr);
|
||||
void* ini_realloc(void* ptr, size_t size);
|
||||
#else
|
||||
#include <stdlib.h>
|
||||
#define ini_malloc malloc
|
||||
#define ini_free free
|
||||
#define ini_realloc realloc
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#define MAX_SECTION 50
|
||||
#define MAX_NAME 50
|
||||
|
||||
/* Used by ini_parse_string() to keep track of string parsing state. */
|
||||
typedef struct {
|
||||
const char* ptr;
|
||||
size_t num_left;
|
||||
} ini_parse_string_ctx;
|
||||
|
||||
/* Strip whitespace chars off end of given string, in place. Return s. */
|
||||
static char* rstrip(char* s)
|
||||
{
|
||||
char* p = s + strlen(s);
|
||||
while (p > s && isspace((unsigned char)(*--p)))
|
||||
*p = '\0';
|
||||
return s;
|
||||
}
|
||||
|
||||
/* Return pointer to first non-whitespace char in given string. */
|
||||
static char* lskip(const char* s)
|
||||
{
|
||||
while (*s && isspace((unsigned char)(*s)))
|
||||
s++;
|
||||
return (char*)s;
|
||||
}
|
||||
|
||||
/* Return pointer to first char (of chars) or inline comment in given string,
|
||||
or pointer to NUL at end of string if neither found. Inline comment must
|
||||
be prefixed by a whitespace character to register as a comment. */
|
||||
static char* find_chars_or_comment(const char* s, const char* chars)
|
||||
{
|
||||
#if INI_ALLOW_INLINE_COMMENTS
|
||||
int was_space = 0;
|
||||
while (*s && (!chars || !strchr(chars, *s)) &&
|
||||
!(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
|
||||
was_space = isspace((unsigned char)(*s));
|
||||
s++;
|
||||
}
|
||||
#else
|
||||
while (*s && (!chars || !strchr(chars, *s))) {
|
||||
s++;
|
||||
}
|
||||
#endif
|
||||
return (char*)s;
|
||||
}
|
||||
|
||||
/* Similar to strncpy, but ensures dest (size bytes) is
|
||||
NUL-terminated, and doesn't pad with NULs. */
|
||||
static char* strncpy0(char* dest, const char* src, size_t size)
|
||||
{
|
||||
/* Could use strncpy internally, but it causes gcc warnings (see issue #91) */
|
||||
size_t i;
|
||||
for (i = 0; i < size - 1 && src[i]; i++)
|
||||
dest[i] = src[i];
|
||||
dest[i] = '\0';
|
||||
return dest;
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
|
||||
void* user)
|
||||
{
|
||||
/* Uses a fair bit of stack (use heap instead if you need to) */
|
||||
#if INI_USE_STACK
|
||||
char line[INI_MAX_LINE];
|
||||
int max_line = INI_MAX_LINE;
|
||||
#else
|
||||
char* line;
|
||||
size_t max_line = INI_INITIAL_ALLOC;
|
||||
#endif
|
||||
#if INI_ALLOW_REALLOC && !INI_USE_STACK
|
||||
char* new_line;
|
||||
size_t offset;
|
||||
#endif
|
||||
char section[MAX_SECTION] = "";
|
||||
char prev_name[MAX_NAME] = "";
|
||||
|
||||
char* start;
|
||||
char* end;
|
||||
char* name;
|
||||
char* value;
|
||||
int lineno = 0;
|
||||
int error = 0;
|
||||
|
||||
#if !INI_USE_STACK
|
||||
line = (char*)ini_malloc(INI_INITIAL_ALLOC);
|
||||
if (!line) {
|
||||
return -2;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if INI_HANDLER_LINENO
|
||||
#define HANDLER(u, s, n, v) handler(u, s, n, v, lineno)
|
||||
#else
|
||||
#define HANDLER(u, s, n, v) handler(u, s, n, v)
|
||||
#endif
|
||||
|
||||
/* Scan through stream line by line */
|
||||
while (reader(line, (int)max_line, stream) != NULL) {
|
||||
#if INI_ALLOW_REALLOC && !INI_USE_STACK
|
||||
offset = strlen(line);
|
||||
while (offset == max_line - 1 && line[offset - 1] != '\n') {
|
||||
max_line *= 2;
|
||||
if (max_line > INI_MAX_LINE)
|
||||
max_line = INI_MAX_LINE;
|
||||
new_line = ini_realloc(line, max_line);
|
||||
if (!new_line) {
|
||||
ini_free(line);
|
||||
return -2;
|
||||
}
|
||||
line = new_line;
|
||||
if (reader(line + offset, (int)(max_line - offset), stream) == NULL)
|
||||
break;
|
||||
if (max_line >= INI_MAX_LINE)
|
||||
break;
|
||||
offset += strlen(line + offset);
|
||||
}
|
||||
#endif
|
||||
|
||||
lineno++;
|
||||
|
||||
start = line;
|
||||
#if INI_ALLOW_BOM
|
||||
if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
|
||||
(unsigned char)start[1] == 0xBB &&
|
||||
(unsigned char)start[2] == 0xBF) {
|
||||
start += 3;
|
||||
}
|
||||
#endif
|
||||
start = lskip(rstrip(start));
|
||||
|
||||
if (strchr(INI_START_COMMENT_PREFIXES, *start)) {
|
||||
/* Start-of-line comment */
|
||||
}
|
||||
#if INI_ALLOW_MULTILINE
|
||||
else if (*prev_name && *start && start > line) {
|
||||
/* Non-blank line with leading whitespace, treat as continuation
|
||||
of previous name's value (as per Python configparser). */
|
||||
if (!HANDLER(user, section, prev_name, start) && !error)
|
||||
error = lineno;
|
||||
}
|
||||
#endif
|
||||
else if (*start == '[') {
|
||||
/* A "[section]" line */
|
||||
end = find_chars_or_comment(start + 1, "]");
|
||||
if (*end == ']') {
|
||||
*end = '\0';
|
||||
strncpy0(section, start + 1, sizeof(section));
|
||||
*prev_name = '\0';
|
||||
#if INI_CALL_HANDLER_ON_NEW_SECTION
|
||||
if (!HANDLER(user, section, NULL, NULL) && !error)
|
||||
error = lineno;
|
||||
#endif
|
||||
}
|
||||
else if (!error) {
|
||||
/* No ']' found on section line */
|
||||
error = lineno;
|
||||
}
|
||||
}
|
||||
else if (*start) {
|
||||
/* Not a comment, must be a name[=:]value pair */
|
||||
end = find_chars_or_comment(start, "=:");
|
||||
if (*end == '=' || *end == ':') {
|
||||
*end = '\0';
|
||||
name = rstrip(start);
|
||||
value = end + 1;
|
||||
#if INI_ALLOW_INLINE_COMMENTS
|
||||
end = find_chars_or_comment(value, NULL);
|
||||
if (*end)
|
||||
*end = '\0';
|
||||
#endif
|
||||
value = lskip(value);
|
||||
rstrip(value);
|
||||
|
||||
/* Valid name[=:]value pair found, call handler */
|
||||
strncpy0(prev_name, name, sizeof(prev_name));
|
||||
if (!HANDLER(user, section, name, value) && !error)
|
||||
error = lineno;
|
||||
}
|
||||
else if (!error) {
|
||||
/* No '=' or ':' found on name[=:]value line */
|
||||
#if INI_ALLOW_NO_VALUE
|
||||
*end = '\0';
|
||||
name = rstrip(start);
|
||||
if (!HANDLER(user, section, name, NULL) && !error)
|
||||
error = lineno;
|
||||
#else
|
||||
error = lineno;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
#if INI_STOP_ON_FIRST_ERROR
|
||||
if (error)
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if !INI_USE_STACK
|
||||
ini_free(line);
|
||||
#endif
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int ini_parse_file(FILE* file, ini_handler handler, void* user)
|
||||
{
|
||||
return ini_parse_stream((ini_reader)fgets, file, handler, user);
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int ini_parse(const char* filename, ini_handler handler, void* user)
|
||||
{
|
||||
FILE* file;
|
||||
int error;
|
||||
|
||||
file = fopen(filename, "r");
|
||||
if (!file)
|
||||
return -1;
|
||||
error = ini_parse_file(file, handler, user);
|
||||
fclose(file);
|
||||
return error;
|
||||
}
|
||||
|
||||
/* An ini_reader function to read the next line from a string buffer. This
|
||||
is the fgets() equivalent used by ini_parse_string(). */
|
||||
static char* ini_reader_string(char* str, int num, void* stream) {
|
||||
ini_parse_string_ctx* ctx = (ini_parse_string_ctx*)stream;
|
||||
const char* ctx_ptr = ctx->ptr;
|
||||
size_t ctx_num_left = ctx->num_left;
|
||||
char* strp = str;
|
||||
char c;
|
||||
|
||||
if (ctx_num_left == 0 || num < 2)
|
||||
return NULL;
|
||||
|
||||
while (num > 1 && ctx_num_left != 0) {
|
||||
c = *ctx_ptr++;
|
||||
ctx_num_left--;
|
||||
*strp++ = c;
|
||||
if (c == '\n')
|
||||
break;
|
||||
num--;
|
||||
}
|
||||
|
||||
*strp = '\0';
|
||||
ctx->ptr = ctx_ptr;
|
||||
ctx->num_left = ctx_num_left;
|
||||
return str;
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int ini_parse_string(const char* string, ini_handler handler, void* user) {
|
||||
ini_parse_string_ctx ctx;
|
||||
|
||||
ctx.ptr = string;
|
||||
ctx.num_left = strlen(string);
|
||||
return ini_parse_stream((ini_reader)ini_reader_string, &ctx, handler,
|
||||
user);
|
||||
}
|
Reference in New Issue
Block a user