@leroysheep / LeeRoySheep
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1 #ifndef REFSPEC_H
2 #define REFSPEC_H
3
4 struct git_hash_algo;
5 struct string_list;
6 struct strvec;
7
8 #define TAG_REFSPEC "refs/tags/*:refs/tags/*"
9
10 /**
11 * A struct refspec_item holds the parsed interpretation of a refspec. If it
12 * will force updates (starts with a '+'), force is true. If it is a pattern
13 * (sides end with '*') pattern is true. If it is a negative refspec, (starts
14 * with '^'), negative is true. src and dest are the two sides (including '*'
15 * characters if present); if there is only one side, it is src, and dst is
16 * NULL; if sides exist but are empty (i.e., the refspec either starts or ends
17 * with ':'), the corresponding side is "".
18 *
19 * remote_find_tracking(), given a remote and a struct refspec_item with either src
20 * or dst filled out, will fill out the other such that the result is in the
21 * "fetch" specification for the remote (note that this evaluates patterns and
22 * returns a single result).
23 */
24 struct refspec_item {
25 unsigned force : 1;
26 unsigned pattern : 1;
27 unsigned matching : 1;
28 unsigned exact_sha1 : 1;
29 unsigned negative : 1;
30
31 char *src;
32 char *dst;
33
34 char *raw;
35 };
36
37 int refspec_item_init_fetch(struct refspec_item *item, const char *refspec,
38 const struct git_hash_algo *algo);
39 int refspec_item_init_push(struct refspec_item *item, const char *refspec,
40 const struct git_hash_algo *algo);
41 void refspec_item_clear(struct refspec_item *item);
42
43 /**
44 * An array of strings can be parsed into a struct refspec using
45 * parse_fetch_refspec() or parse_push_refspec().
46 */
47 struct refspec {
48 struct refspec_item *items;
49 int alloc;
50 int nr;
51
52 const struct git_hash_algo *hash_algo;
53 unsigned fetch : 1;
54 };
55
56 #define REFSPEC_INIT_FETCH(algo) { \
57 .fetch = 1, \
58 .hash_algo = (algo), \
59 }
60 #define REFSPEC_INIT_PUSH(algo) { \
61 .fetch = 0, \
62 .hash_algo = (algo), \
63 }
64
65 void refspec_init_fetch(struct refspec *rs, const struct git_hash_algo *hash_algo);
66 void refspec_init_push(struct refspec *rs, const struct git_hash_algo *hash_algo);
67 void refspec_clear(struct refspec *rs);
68
69 void refspec_append(struct refspec *rs, const char *refspec);
70 __attribute__((format (printf,2,3)))
71 void refspec_appendf(struct refspec *rs, const char *fmt, ...);
72 void refspec_appendn(struct refspec *rs, const char **refspecs, int nr);
73
74 int valid_fetch_refspec(const char *refspec, const struct git_hash_algo *algo);
75
76 /*
77 * Determine what <prefix> values to pass to the peer in ref-prefix lines
78 * (see linkgit:gitprotocol-v2[5]).
79 */
80 void refspec_ref_prefixes(const struct refspec *rs,
81 struct strvec *ref_prefixes);
82
83 int refname_matches_negative_refspec_item(const char *refname, struct refspec *rs);
84
85 /*
86 * Checks if a refname matches a globbing refspec pattern.
87 * If replacement is provided, computes the corresponding mapped refname.
88 * Returns 1 if refname matches pattern, 0 otherwise.
89 */
90 int match_refname_with_pattern(const char *pattern, const char *refname,
91 const char *replacement, char **result);
92
93 /*
94 * Queries a refspec for a match and updates the query item.
95 * Returns 0 on success, -1 if no match is found or negative refspec matches.
96 */
97 int refspec_find_match(struct refspec *rs, struct refspec_item *query);
98
99 /*
100 * Queries a refspec for all matches and appends results to the provided string
101 * list.
102 */
103 void refspec_find_all_matches(struct refspec *rs,
104 struct refspec_item *query,
105 struct string_list *results);
106
107 /*
108 * Remove all entries in the input list which match any negative refspec in
109 * the refspec list.
110 */
111 struct ref *apply_negative_refspecs(struct ref *ref_map, struct refspec *rs);
112
113 /*
114 * Search for a refspec that matches the given name and return the
115 * corresponding destination (dst) if a match is found, NULL otherwise.
116 */
117 char *apply_refspecs(struct refspec *rs, const char *name);
118
119 #endif /* REFSPEC_H */