thodg/libgit2/src/idxmap.h

• Show log

  Commit

• Hash : 661fc57b
  Author :
  Date : 2018-12-01T01:16:25
  

  idxmap: introduce high-level setter for key/value pairs Currently, one would use the function `git_idxmap_insert` to insert key/value pairs into a map. This function has historically been a macro, which is why its syntax is kind of weird: instead of returning an error code directly, it instead has to be passed a pointer to where the return value shall be stored. This does not match libgit2's common idiom of directly returning error codes. Introduce a new function `git_idxmap_set`, which takes as parameters the map, key and value and directly returns an error code. Convert all callers of `git_idxmap_insert` to make use of it.

Download

• src/idxmap.h

• /*
   * 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.
   */
  #ifndef INCLUDE_idxmap_h__
  #define INCLUDE_idxmap_h__
  
  #include "common.h"
  
  #include "git2/index.h"
  
  /** A map with `git_index_entry`s as key. */
  typedef struct kh_idx_s git_idxmap;
  /** A map with case-insensitive `git_index_entry`s as key */
  typedef struct kh_idxicase_s git_idxmap_icase;
  
  /**
   * Allocate a new index entry map.
   *
   * @param out Pointer to the map that shall be allocated.
   * @return 0 on success, an error code if allocation has failed.
   */
  int git_idxmap_new(git_idxmap **out);
  
  /**
   * Allocate a new case-insensitive index entry map.
   *
   * @param out Pointer to the map that shall be allocated.
   * @return 0 on success, an error code if allocation has failed.
   */
  int git_idxmap_icase_new(git_idxmap_icase **out);
  
  /**
   * Free memory associated with the map.
   *
   * Note that this function will _not_ free values added to this
   * map.
   *
   * @param map Pointer to the map that is to be free'd. May be
   *            `NULL`.
   */
  void git_idxmap_free(git_idxmap *map);
  
  /**
   * Free memory associated with the map.
   *
   * Note that this function will _not_ free values added to this
   * map.
   *
   * @param map Pointer to the map that is to be free'd. May be
   *            `NULL`.
   */
  void git_idxmap_icase_free(git_idxmap_icase *map);
  
  /**
   * Clear all entries from the map.
   *
   * This function will remove all entries from the associated map.
   * Memory associated with it will not be released, though.
   *
   * @param map Pointer to the map that shall be cleared. May be
   *            `NULL`.
   */
  void git_idxmap_clear(git_idxmap *map);
  
  /**
   * Clear all entries from the map.
   *
   * This function will remove all entries from the associated map.
   * Memory associated with it will not be released, though.
   *
   * @param map Pointer to the map that shall be cleared. May be
   *            `NULL`.
   */
  void git_idxmap_icase_clear(git_idxmap_icase *map);
  
  /**
   * Return value associated with the given key.
   *
   * @param map map to search key in
   * @param key key to search for; the index entry will be searched
   *            for by its case-sensitive path
   * @return value associated with the given key or NULL if the key was not found
   */
  void *git_idxmap_get(git_idxmap *map, const git_index_entry *key);
  
  /**
   * Return value associated with the given key.
   *
   * @param map map to search key in
   * @param key key to search for; the index entry will be searched
   *            for by its case-insensitive path
   * @return value associated with the given key or NULL if the key was not found
   */
  void *git_idxmap_icase_get(git_idxmap_icase *map, const git_index_entry *key);
  
  /**
   * Set the entry for key to value.
   *
   * If the map has no corresponding entry for the given key, a new
   * entry will be created with the given value. If an entry exists
   * already, its value will be updated to match the given value.
   *
   * @param map map to create new entry in
   * @param key key to set
   * @param value value to associate the key with; may be NULL
   * @return zero if the key was successfully set, a negative error
   *         code otherwise
   */
  int git_idxmap_set(git_idxmap *map, const git_index_entry *key, void *value);
  
  /**
   * Set the entry for key to value.
   *
   * If the map has no corresponding entry for the given key, a new
   * entry will be created with the given value. If an entry exists
   * already, its value will be updated to match the given value.
   *
   * @param map map to create new entry in
   * @param key key to set
   * @param value value to associate the key with; may be NULL
   * @return zero if the key was successfully set, a negative error
   *         code otherwise
   */
  int git_idxmap_icase_set(git_idxmap_icase *map, const git_index_entry *key, void *value);
  
  void git_idxmap_insert(git_idxmap *map, const git_index_entry *key, void *value, int *rval);
  void git_idxmap_icase_insert(git_idxmap_icase *map, const git_index_entry *key, void *value, int *rval);
  
  size_t git_idxmap_lookup_index(git_idxmap *map, const git_index_entry *key);
  size_t git_idxmap_icase_lookup_index(git_idxmap_icase *map, const git_index_entry *key);
  void *git_idxmap_value_at(git_idxmap *map, size_t idx);
  int git_idxmap_valid_index(git_idxmap *map, size_t idx);
  int git_idxmap_icase_valid_index(git_idxmap_icase *map, size_t idx);
  int git_idxmap_has_data(git_idxmap *map, size_t idx);
  int git_idxmap_icase_has_data(git_idxmap_icase *map, size_t idx);
  
  void git_idxmap_resize(git_idxmap *map, size_t size);
  void git_idxmap_icase_resize(git_idxmap_icase *map, size_t size);
  
  void git_idxmap_delete_at(git_idxmap *map, size_t idx);
  void git_idxmap_icase_delete_at(git_idxmap_icase *map, size_t idx);
  
  void git_idxmap_delete(git_idxmap *map, const git_index_entry *key);
  void git_idxmap_icase_delete(git_idxmap_icase *map, const git_index_entry *key);
  
  #endif
  

Download