thodg/libgit2/src/util/strmap.c

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• Hash : c3b7ace9
  Author :
  Date : 2021-11-14T16:43:53
  

  refactor: make util an object library Instead of simply including the utility files directly, make them a cmake object library for easy reusability between other projects within libgit2. Now the top-level `src` is responsible for platform selection, while the next-level `libgit2` and `util` configurations are responsible for identifying what objects they include.

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• src/util/strmap.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 "strmap.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(str, const char *, void *)
  
  __KHASH_IMPL(str, static kh_inline, const char *, void *, 1, kh_str_hash_func, kh_str_hash_equal)
  
  int git_strmap_new(git_strmap **out)
  {
  	*out = kh_init(str);
  	GIT_ERROR_CHECK_ALLOC(*out);
  
  	return 0;
  }
  
  void git_strmap_free(git_strmap *map)
  {
  	kh_destroy(str, map);
  }
  
  void git_strmap_clear(git_strmap *map)
  {
  	kh_clear(str, map);
  }
  
  size_t git_strmap_size(git_strmap *map)
  {
  	return kh_size(map);
  }
  
  void *git_strmap_get(git_strmap *map, const char *key)
  {
  	size_t idx = kh_get(str, map, key);
  	if (idx == kh_end(map) || !kh_exist(map, idx))
  		return NULL;
  	return kh_val(map, idx);
  }
  
  int git_strmap_set(git_strmap *map, const char *key, void *value)
  {
  	size_t idx;
  	int rval;
  
  	idx = kh_put(str, 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_strmap_delete(git_strmap *map, const char *key)
  {
  	khiter_t idx = kh_get(str, map, key);
  	if (idx == kh_end(map))
  		return GIT_ENOTFOUND;
  	kh_del(str, map, idx);
  	return 0;
  }
  
  int git_strmap_exists(git_strmap *map, const char *key)
  {
  	return kh_get(str, map, key) != kh_end(map);
  }
  
  int git_strmap_iterate(void **value, git_strmap *map, size_t *iter, const char **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_val(map, i);
  	*iter = ++i;
  
  	return 0;
  }
  

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