thodg/libgit2/src/libgit2/oidmap.c

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• Hash : ef4ab298
  Author :
  Date : 2021-11-14T08:47:40
  

  refactor: `src` is now `src/libgit2`
  

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• src/libgit2/oidmap.c

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  
  #include "oidmap.h"
  
  #define kmalloc git__malloc
  #define kcalloc git__calloc
  #define krealloc git__realloc
  #define kreallocarray git__reallocarray
  #define kfree git__free
  #include "khash.h"
  
  __KHASH_TYPE(oid, const git_oid *, void *)
  
  GIT_INLINE(khint_t) git_oidmap_hash(const git_oid *oid)
  {
  	khint_t h;
  	memcpy(&h, oid, sizeof(khint_t));
  	return h;
  }
  
  __KHASH_IMPL(oid, static kh_inline, const git_oid *, void *, 1, git_oidmap_hash, git_oid_equal)
  
  int git_oidmap_new(git_oidmap **out)
  {
  	*out = kh_init(oid);
  	GIT_ERROR_CHECK_ALLOC(*out);
  
  	return 0;
  }
  
  void git_oidmap_free(git_oidmap *map)
  {
  	kh_destroy(oid, map);
  }
  
  void git_oidmap_clear(git_oidmap *map)
  {
  	kh_clear(oid, map);
  }
  
  size_t git_oidmap_size(git_oidmap *map)
  {
  	return kh_size(map);
  }
  
  void *git_oidmap_get(git_oidmap *map, const git_oid *key)
  {
  	size_t idx = kh_get(oid, map, key);
  	if (idx == kh_end(map) || !kh_exist(map, idx))
  		return NULL;
  	return kh_val(map, idx);
  }
  
  int git_oidmap_set(git_oidmap *map, const git_oid *key, void *value)
  {
  	size_t idx;
  	int rval;
  
  	idx = kh_put(oid, map, key, &rval);
  	if (rval < 0)
  		return -1;
  
  	if (rval == 0)
  		kh_key(map, idx) = key;
  
  	kh_val(map, idx) = value;
  
  	return 0;
  }
  
  int git_oidmap_delete(git_oidmap *map, const git_oid *key)
  {
  	khiter_t idx = kh_get(oid, map, key);
  	if (idx == kh_end(map))
  		return GIT_ENOTFOUND;
  	kh_del(oid, map, idx);
  	return 0;
  }
  
  int git_oidmap_exists(git_oidmap *map, const git_oid *key)
  {
  	return kh_get(oid, map, key) != kh_end(map);
  }
  
  int git_oidmap_iterate(void **value, git_oidmap *map, size_t *iter, const git_oid **key)
  {
  	size_t i = *iter;
  
  	while (i < map->n_buckets && !kh_exist(map, i))
  		i++;
  
  	if (i >= map->n_buckets)
  		return GIT_ITEROVER;
  
  	if (key)
  		*key = kh_key(map, i);
  	if (value)
  		*value = kh_value(map, i);
  	*iter = ++i;
  
  	return 0;
  }
  

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