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Commit | Line | Data |
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ec0cb496 | 1 | #include "cache.h" |
6373cb59 | 2 | #include "argv-array.h" |
ec0cb496 BW |
3 | #include "refs.h" |
4 | #include "refspec.h" | |
5 | ||
0ad4a5ff | 6 | static struct refspec_item s_tag_refspec = { |
ec0cb496 BW |
7 | 0, |
8 | 1, | |
9 | 0, | |
10 | 0, | |
11 | "refs/tags/*", | |
12 | "refs/tags/*" | |
13 | }; | |
14 | ||
15 | /* See TAG_REFSPEC for the string version */ | |
0ad4a5ff | 16 | const struct refspec_item *tag_refspec = &s_tag_refspec; |
ec0cb496 | 17 | |
3eec3700 BW |
18 | /* |
19 | * Parses the provided refspec 'refspec' and populates the refspec_item 'item'. | |
20 | * Returns 1 if successful and 0 if the refspec is invalid. | |
21 | */ | |
22 | static int parse_refspec(struct refspec_item *item, const char *refspec, int fetch) | |
ec0cb496 | 23 | { |
3eec3700 BW |
24 | size_t llen; |
25 | int is_glob; | |
26 | const char *lhs, *rhs; | |
27 | int flags; | |
ec0cb496 | 28 | |
3eec3700 | 29 | is_glob = 0; |
ec0cb496 | 30 | |
3eec3700 BW |
31 | lhs = refspec; |
32 | if (*lhs == '+') { | |
33 | item->force = 1; | |
34 | lhs++; | |
35 | } | |
ec0cb496 | 36 | |
3eec3700 | 37 | rhs = strrchr(lhs, ':'); |
ec0cb496 | 38 | |
3eec3700 BW |
39 | /* |
40 | * Before going on, special case ":" (or "+:") as a refspec | |
41 | * for pushing matching refs. | |
42 | */ | |
43 | if (!fetch && rhs == lhs && rhs[1] == '\0') { | |
44 | item->matching = 1; | |
45 | return 1; | |
46 | } | |
ec0cb496 | 47 | |
3eec3700 BW |
48 | if (rhs) { |
49 | size_t rlen = strlen(++rhs); | |
50 | is_glob = (1 <= rlen && strchr(rhs, '*')); | |
51 | item->dst = xstrndup(rhs, rlen); | |
52 | } | |
53 | ||
54 | llen = (rhs ? (rhs - lhs - 1) : strlen(lhs)); | |
55 | if (1 <= llen && memchr(lhs, '*', llen)) { | |
56 | if ((rhs && !is_glob) || (!rhs && fetch)) | |
57 | return 0; | |
58 | is_glob = 1; | |
59 | } else if (rhs && is_glob) { | |
60 | return 0; | |
61 | } | |
62 | ||
63 | item->pattern = is_glob; | |
64 | item->src = xstrndup(lhs, llen); | |
65 | flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0); | |
66 | ||
67 | if (fetch) { | |
68 | struct object_id unused; | |
69 | ||
70 | /* LHS */ | |
71 | if (!*item->src) | |
72 | ; /* empty is ok; it means "HEAD" */ | |
73 | else if (llen == GIT_SHA1_HEXSZ && !get_oid_hex(item->src, &unused)) | |
74 | item->exact_sha1 = 1; /* ok */ | |
75 | else if (!check_refname_format(item->src, flags)) | |
76 | ; /* valid looking ref is ok */ | |
77 | else | |
78 | return 0; | |
79 | /* RHS */ | |
80 | if (!item->dst) | |
81 | ; /* missing is ok; it is the same as empty */ | |
82 | else if (!*item->dst) | |
83 | ; /* empty is ok; it means "do not store" */ | |
84 | else if (!check_refname_format(item->dst, flags)) | |
85 | ; /* valid looking ref is ok */ | |
86 | else | |
87 | return 0; | |
88 | } else { | |
ec0cb496 | 89 | /* |
3eec3700 BW |
90 | * LHS |
91 | * - empty is allowed; it means delete. | |
92 | * - when wildcarded, it must be a valid looking ref. | |
93 | * - otherwise, it must be an extended SHA-1, but | |
94 | * there is no existing way to validate this. | |
ec0cb496 | 95 | */ |
3eec3700 BW |
96 | if (!*item->src) |
97 | ; /* empty is ok */ | |
98 | else if (is_glob) { | |
99 | if (check_refname_format(item->src, flags)) | |
100 | return 0; | |
ec0cb496 | 101 | } |
3eec3700 BW |
102 | else |
103 | ; /* anything goes, for now */ | |
104 | /* | |
105 | * RHS | |
106 | * - missing is allowed, but LHS then must be a | |
107 | * valid looking ref. | |
108 | * - empty is not allowed. | |
109 | * - otherwise it must be a valid looking ref. | |
110 | */ | |
111 | if (!item->dst) { | |
112 | if (check_refname_format(item->src, flags)) | |
113 | return 0; | |
114 | } else if (!*item->dst) { | |
115 | return 0; | |
116 | } else { | |
117 | if (check_refname_format(item->dst, flags)) | |
118 | return 0; | |
ec0cb496 | 119 | } |
3eec3700 | 120 | } |
ec0cb496 | 121 | |
3eec3700 BW |
122 | return 1; |
123 | } | |
ec0cb496 | 124 | |
6d4c0578 BW |
125 | void refspec_item_init(struct refspec_item *item, const char *refspec, int fetch) |
126 | { | |
127 | memset(item, 0, sizeof(*item)); | |
128 | ||
129 | if (!parse_refspec(item, refspec, fetch)) | |
130 | die("Invalid refspec '%s'", refspec); | |
131 | } | |
132 | ||
133 | void refspec_item_clear(struct refspec_item *item) | |
134 | { | |
135 | FREE_AND_NULL(item->src); | |
136 | FREE_AND_NULL(item->dst); | |
137 | item->force = 0; | |
138 | item->pattern = 0; | |
139 | item->matching = 0; | |
140 | item->exact_sha1 = 0; | |
141 | } | |
142 | ||
143 | void refspec_init(struct refspec *rs, int fetch) | |
144 | { | |
145 | memset(rs, 0, sizeof(*rs)); | |
146 | rs->fetch = fetch; | |
147 | } | |
148 | ||
149 | void refspec_append(struct refspec *rs, const char *refspec) | |
150 | { | |
151 | struct refspec_item item; | |
152 | ||
153 | refspec_item_init(&item, refspec, rs->fetch); | |
154 | ||
155 | ALLOC_GROW(rs->items, rs->nr + 1, rs->alloc); | |
156 | rs->items[rs->nr++] = item; | |
157 | ||
158 | ALLOC_GROW(rs->raw, rs->raw_nr + 1, rs->raw_alloc); | |
159 | rs->raw[rs->raw_nr++] = xstrdup(refspec); | |
160 | } | |
161 | ||
162 | void refspec_appendn(struct refspec *rs, const char **refspecs, int nr) | |
163 | { | |
164 | int i; | |
165 | for (i = 0; i < nr; i++) | |
166 | refspec_append(rs, refspecs[i]); | |
167 | } | |
168 | ||
169 | void refspec_clear(struct refspec *rs) | |
170 | { | |
171 | int i; | |
172 | ||
173 | for (i = 0; i < rs->nr; i++) | |
174 | refspec_item_clear(&rs->items[i]); | |
175 | ||
176 | FREE_AND_NULL(rs->items); | |
177 | rs->alloc = 0; | |
178 | rs->nr = 0; | |
179 | ||
180 | for (i = 0; i < rs->raw_nr; i++) | |
181 | free((char *)rs->raw[i]); | |
182 | FREE_AND_NULL(rs->raw); | |
183 | rs->raw_alloc = 0; | |
184 | rs->raw_nr = 0; | |
185 | ||
186 | rs->fetch = 0; | |
187 | } | |
c8fa9efe BW |
188 | |
189 | int valid_fetch_refspec(const char *fetch_refspec_str) | |
190 | { | |
191 | struct refspec_item refspec; | |
192 | int ret = parse_refspec(&refspec, fetch_refspec_str, REFSPEC_FETCH); | |
193 | refspec_item_clear(&refspec); | |
194 | return ret; | |
195 | } | |
6373cb59 BW |
196 | |
197 | void refspec_ref_prefixes(const struct refspec *rs, | |
198 | struct argv_array *ref_prefixes) | |
199 | { | |
200 | int i; | |
201 | for (i = 0; i < rs->nr; i++) { | |
202 | const struct refspec_item *item = &rs->items[i]; | |
203 | const char *prefix = NULL; | |
204 | ||
6c301adb JN |
205 | if (item->exact_sha1) |
206 | continue; | |
6373cb59 BW |
207 | if (rs->fetch == REFSPEC_FETCH) |
208 | prefix = item->src; | |
209 | else if (item->dst) | |
210 | prefix = item->dst; | |
211 | else if (item->src && !item->exact_sha1) | |
212 | prefix = item->src; | |
213 | ||
214 | if (prefix) { | |
215 | if (item->pattern) { | |
216 | const char *glob = strchr(prefix, '*'); | |
217 | argv_array_pushf(ref_prefixes, "%.*s", | |
218 | (int)(glob - prefix), | |
219 | prefix); | |
220 | } else { | |
221 | expand_ref_prefix(ref_prefixes, prefix); | |
222 | } | |
223 | } | |
224 | } | |
225 | } |