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Revision d64ea0f83bd7e676778f833c57f969a94518a28d authored by Jeff King on 13 January 2015, 01:57:37 UTC, committed by Junio C Hamano on 13 January 2015, 18:03:30 UTC 
git-compat-util: add xstrdup_or_null helper
 
It's a common idiom to duplicate a string if it is non-NULL,
or pass a literal NULL through. This is already a one-liner
in C, but you do have to repeat the name of the string
twice. So if there's a function call, you must write:

  const char *x = some_fun(...);
  return x ? xstrdup(x) : NULL;

instead of (with this patch) just:

  return xstrdup_or_null(some_fun(...));

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 1da1e07
Raw File
split-index.h 
#ifndef SPLIT_INDEX_H
#define SPLIT_INDEX_H

struct index_state;
struct strbuf;
struct ewah_bitmap;

struct split_index {
	unsigned char base_sha1[20];
	struct index_state *base;
	struct ewah_bitmap *delete_bitmap;
	struct ewah_bitmap *replace_bitmap;
	struct cache_entry **saved_cache;
	unsigned int saved_cache_nr;
	unsigned int nr_deletions;
	unsigned int nr_replacements;
	int refcount;
};

struct split_index *init_split_index(struct index_state *istate);
void save_or_free_index_entry(struct index_state *istate, struct cache_entry *ce);
void replace_index_entry_in_base(struct index_state *istate,
				 struct cache_entry *old,
				 struct cache_entry *new);
int read_link_extension(struct index_state *istate,
			const void *data, unsigned long sz);
int write_link_extension(struct strbuf *sb,
			 struct index_state *istate);
void move_cache_to_base_index(struct index_state *istate);
void merge_base_index(struct index_state *istate);
void prepare_to_write_split_index(struct index_state *istate);
void finish_writing_split_index(struct index_state *istate);
void discard_split_index(struct index_state *istate);

#endif
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