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Commit | Line | Data |
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8860fd42 JS |
1 | #include "cache.h" |
2 | #include "commit.h" | |
3 | #include "refs.h" | |
4 | #include "diff.h" | |
5 | #include "revision.h" | |
c455c87c | 6 | #include "string-list.h" |
53645a3a | 7 | #include "reflog-walk.h" |
8860fd42 JS |
8 | |
9 | struct complete_reflogs { | |
10 | char *ref; | |
8f8f5476 | 11 | const char *short_ref; |
8860fd42 | 12 | struct reflog_info { |
8ebc3fd0 | 13 | struct object_id ooid, noid; |
8860fd42 | 14 | char *email; |
dddbad72 | 15 | timestamp_t timestamp; |
8860fd42 JS |
16 | int tz; |
17 | char *message; | |
18 | } *items; | |
19 | int nr, alloc; | |
20 | }; | |
21 | ||
9461d272 | 22 | static int read_one_reflog(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 23 | const char *email, timestamp_t timestamp, int tz, |
8860fd42 JS |
24 | const char *message, void *cb_data) |
25 | { | |
26 | struct complete_reflogs *array = cb_data; | |
27 | struct reflog_info *item; | |
28 | ||
6647cc26 | 29 | ALLOC_GROW(array->items, array->nr + 1, array->alloc); |
8860fd42 | 30 | item = array->items + array->nr; |
9461d272 | 31 | oidcpy(&item->ooid, ooid); |
32 | oidcpy(&item->noid, noid); | |
8860fd42 JS |
33 | item->email = xstrdup(email); |
34 | item->timestamp = timestamp; | |
35 | item->tz = tz; | |
36 | item->message = xstrdup(message); | |
37 | array->nr++; | |
38 | return 0; | |
39 | } | |
40 | ||
e30d463d JK |
41 | static void free_complete_reflog(struct complete_reflogs *array) |
42 | { | |
43 | int i; | |
44 | ||
45 | if (!array) | |
46 | return; | |
47 | ||
48 | for (i = 0; i < array->nr; i++) { | |
49 | free(array->items[i].email); | |
50 | free(array->items[i].message); | |
51 | } | |
52 | free(array->items); | |
53 | free(array->ref); | |
54 | free(array); | |
55 | } | |
56 | ||
8860fd42 JS |
57 | static struct complete_reflogs *read_complete_reflog(const char *ref) |
58 | { | |
59 | struct complete_reflogs *reflogs = | |
8e1aa2f7 | 60 | xcalloc(1, sizeof(struct complete_reflogs)); |
8860fd42 JS |
61 | reflogs->ref = xstrdup(ref); |
62 | for_each_reflog_ent(ref, read_one_reflog, reflogs); | |
63 | if (reflogs->nr == 0) { | |
2928325f | 64 | struct object_id oid; |
96ec7b1e NTND |
65 | const char *name; |
66 | void *name_to_free; | |
7695d118 | 67 | name = name_to_free = resolve_refdup(ref, RESOLVE_REF_READING, |
2928325f | 68 | oid.hash, NULL); |
d5a35c11 | 69 | if (name) { |
8860fd42 | 70 | for_each_reflog_ent(name, read_one_reflog, reflogs); |
96ec7b1e | 71 | free(name_to_free); |
d5a35c11 | 72 | } |
8860fd42 JS |
73 | } |
74 | if (reflogs->nr == 0) { | |
75faa45a | 75 | char *refname = xstrfmt("refs/%s", ref); |
8860fd42 JS |
76 | for_each_reflog_ent(refname, read_one_reflog, reflogs); |
77 | if (reflogs->nr == 0) { | |
75faa45a JK |
78 | free(refname); |
79 | refname = xstrfmt("refs/heads/%s", ref); | |
8860fd42 JS |
80 | for_each_reflog_ent(refname, read_one_reflog, reflogs); |
81 | } | |
82 | free(refname); | |
83 | } | |
84 | return reflogs; | |
85 | } | |
86 | ||
87 | static int get_reflog_recno_by_time(struct complete_reflogs *array, | |
dddbad72 | 88 | timestamp_t timestamp) |
8860fd42 JS |
89 | { |
90 | int i; | |
40ab7c33 | 91 | for (i = array->nr - 1; i >= 0; i--) |
8860fd42 JS |
92 | if (timestamp >= array->items[i].timestamp) |
93 | return i; | |
94 | return -1; | |
95 | } | |
96 | ||
8860fd42 | 97 | struct commit_reflog { |
a763126b JK |
98 | int recno; |
99 | enum selector_type { | |
100 | SELECTOR_NONE, | |
101 | SELECTOR_INDEX, | |
102 | SELECTOR_DATE | |
103 | } selector; | |
8860fd42 JS |
104 | struct complete_reflogs *reflogs; |
105 | }; | |
106 | ||
107 | struct reflog_walk_info { | |
d08565bf JK |
108 | struct commit_reflog **logs; |
109 | size_t nr, alloc; | |
c455c87c | 110 | struct string_list complete_reflogs; |
8860fd42 JS |
111 | struct commit_reflog *last_commit_reflog; |
112 | }; | |
113 | ||
24d36f14 | 114 | void init_reflog_walk(struct reflog_walk_info **info) |
8860fd42 | 115 | { |
8e1aa2f7 | 116 | *info = xcalloc(1, sizeof(struct reflog_walk_info)); |
75afe7ac | 117 | (*info)->complete_reflogs.strdup_strings = 1; |
8860fd42 JS |
118 | } |
119 | ||
7b69b873 | 120 | int add_reflog_for_walk(struct reflog_walk_info *info, |
8860fd42 JS |
121 | struct commit *commit, const char *name) |
122 | { | |
dddbad72 | 123 | timestamp_t timestamp = 0; |
8860fd42 | 124 | int recno = -1; |
c455c87c | 125 | struct string_list_item *item; |
8860fd42 JS |
126 | struct complete_reflogs *reflogs; |
127 | char *branch, *at = strchr(name, '@'); | |
128 | struct commit_reflog *commit_reflog; | |
a763126b | 129 | enum selector_type selector = SELECTOR_NONE; |
8860fd42 | 130 | |
db055e65 JS |
131 | if (commit->object.flags & UNINTERESTING) |
132 | die ("Cannot walk reflogs for %s", name); | |
133 | ||
8860fd42 JS |
134 | branch = xstrdup(name); |
135 | if (at && at[1] == '{') { | |
136 | char *ep; | |
137 | branch[at - name] = '\0'; | |
138 | recno = strtoul(at + 2, &ep, 10); | |
139 | if (*ep != '}') { | |
140 | recno = -1; | |
141 | timestamp = approxidate(at + 2); | |
a763126b | 142 | selector = SELECTOR_DATE; |
8860fd42 | 143 | } |
a763126b JK |
144 | else |
145 | selector = SELECTOR_INDEX; | |
8860fd42 JS |
146 | } else |
147 | recno = 0; | |
148 | ||
e8c8b713 | 149 | item = string_list_lookup(&info->complete_reflogs, branch); |
8860fd42 JS |
150 | if (item) |
151 | reflogs = item->util; | |
152 | else { | |
d271fd53 | 153 | if (*branch == '\0') { |
2928325f | 154 | struct object_id oid; |
d271fd53 | 155 | free(branch); |
2928325f | 156 | branch = resolve_refdup("HEAD", 0, oid.hash, NULL); |
96ec7b1e NTND |
157 | if (!branch) |
158 | die ("No current branch"); | |
159 | ||
d271fd53 | 160 | } |
8860fd42 | 161 | reflogs = read_complete_reflog(branch); |
eb3a4822 | 162 | if (!reflogs || reflogs->nr == 0) { |
2928325f | 163 | struct object_id oid; |
eb3a4822 | 164 | char *b; |
5026b471 JS |
165 | int ret = dwim_log(branch, strlen(branch), |
166 | oid.hash, &b); | |
167 | if (ret > 1) | |
168 | free(b); | |
169 | else if (ret == 1) { | |
e30d463d | 170 | free_complete_reflog(reflogs); |
eb3a4822 JS |
171 | free(branch); |
172 | branch = b; | |
173 | reflogs = read_complete_reflog(branch); | |
174 | } | |
175 | } | |
5026b471 | 176 | if (!reflogs || reflogs->nr == 0) { |
e30d463d | 177 | free_complete_reflog(reflogs); |
5026b471 | 178 | free(branch); |
7b69b873 | 179 | return -1; |
5026b471 | 180 | } |
78a395d3 | 181 | string_list_insert(&info->complete_reflogs, branch)->util |
8860fd42 JS |
182 | = reflogs; |
183 | } | |
5026b471 | 184 | free(branch); |
8860fd42 | 185 | |
8e1aa2f7 | 186 | commit_reflog = xcalloc(1, sizeof(struct commit_reflog)); |
8860fd42 | 187 | if (recno < 0) { |
8860fd42 JS |
188 | commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp); |
189 | if (commit_reflog->recno < 0) { | |
8860fd42 | 190 | free(commit_reflog); |
7b69b873 | 191 | return -1; |
8860fd42 JS |
192 | } |
193 | } else | |
194 | commit_reflog->recno = reflogs->nr - recno - 1; | |
a763126b | 195 | commit_reflog->selector = selector; |
8860fd42 JS |
196 | commit_reflog->reflogs = reflogs; |
197 | ||
d08565bf JK |
198 | ALLOC_GROW(info->logs, info->nr + 1, info->alloc); |
199 | info->logs[info->nr++] = commit_reflog; | |
8860fd42 | 200 | |
d08565bf | 201 | return 0; |
8860fd42 JS |
202 | } |
203 | ||
72b103fe TR |
204 | void get_reflog_selector(struct strbuf *sb, |
205 | struct reflog_walk_info *reflog_info, | |
a5481a6c | 206 | const struct date_mode *dmode, int force_date, |
8f8f5476 | 207 | int shorten) |
72b103fe TR |
208 | { |
209 | struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; | |
210 | struct reflog_info *info; | |
8f8f5476 | 211 | const char *printed_ref; |
72b103fe TR |
212 | |
213 | if (!commit_reflog) | |
214 | return; | |
215 | ||
8f8f5476 TR |
216 | if (shorten) { |
217 | if (!commit_reflog->reflogs->short_ref) | |
218 | commit_reflog->reflogs->short_ref | |
219 | = shorten_unambiguous_ref(commit_reflog->reflogs->ref, 0); | |
220 | printed_ref = commit_reflog->reflogs->short_ref; | |
221 | } else { | |
222 | printed_ref = commit_reflog->reflogs->ref; | |
223 | } | |
224 | ||
225 | strbuf_addf(sb, "%s@{", printed_ref); | |
794151e9 | 226 | if (commit_reflog->selector == SELECTOR_DATE || |
55ccf85a | 227 | (commit_reflog->selector == SELECTOR_NONE && force_date)) { |
72b103fe TR |
228 | info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; |
229 | strbuf_addstr(sb, show_date(info->timestamp, info->tz, dmode)); | |
230 | } else { | |
231 | strbuf_addf(sb, "%d", commit_reflog->reflogs->nr | |
232 | - 2 - commit_reflog->recno); | |
233 | } | |
234 | ||
235 | strbuf_addch(sb, '}'); | |
236 | } | |
237 | ||
8f8f5476 TR |
238 | void get_reflog_message(struct strbuf *sb, |
239 | struct reflog_walk_info *reflog_info) | |
240 | { | |
241 | struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; | |
242 | struct reflog_info *info; | |
243 | size_t len; | |
244 | ||
245 | if (!commit_reflog) | |
246 | return; | |
247 | ||
248 | info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; | |
249 | len = strlen(info->message); | |
250 | if (len > 0) | |
251 | len--; /* strip away trailing newline */ | |
252 | strbuf_add(sb, info->message, len); | |
253 | } | |
254 | ||
cd1957f5 JK |
255 | const char *get_reflog_ident(struct reflog_walk_info *reflog_info) |
256 | { | |
257 | struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; | |
258 | struct reflog_info *info; | |
259 | ||
260 | if (!commit_reflog) | |
261 | return NULL; | |
262 | ||
263 | info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; | |
264 | return info->email; | |
265 | } | |
266 | ||
de239446 JK |
267 | timestamp_t get_reflog_timestamp(struct reflog_walk_info *reflog_info) |
268 | { | |
269 | struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; | |
270 | struct reflog_info *info; | |
271 | ||
272 | if (!commit_reflog) | |
273 | return 0; | |
274 | ||
275 | info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; | |
276 | return info->timestamp; | |
277 | } | |
278 | ||
72b103fe | 279 | void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline, |
a5481a6c | 280 | const struct date_mode *dmode, int force_date) |
8860fd42 | 281 | { |
72b103fe TR |
282 | if (reflog_info && reflog_info->last_commit_reflog) { |
283 | struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; | |
8860fd42 | 284 | struct reflog_info *info; |
72b103fe | 285 | struct strbuf selector = STRBUF_INIT; |
8860fd42 | 286 | |
4d12a471 | 287 | info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; |
55ccf85a | 288 | get_reflog_selector(&selector, reflog_info, dmode, force_date, 0); |
4d12a471 | 289 | if (oneline) { |
72b103fe | 290 | printf("%s: %s", selector.buf, info->message); |
4d12a471 JH |
291 | } |
292 | else { | |
72b103fe TR |
293 | printf("Reflog: %s (%s)\nReflog message: %s", |
294 | selector.buf, info->email, info->message); | |
4d12a471 | 295 | } |
72b103fe TR |
296 | |
297 | strbuf_release(&selector); | |
8860fd42 JS |
298 | } |
299 | } | |
7f97de5e JK |
300 | |
301 | int reflog_walk_empty(struct reflog_walk_info *info) | |
302 | { | |
d08565bf JK |
303 | return !info || !info->nr; |
304 | } | |
305 | ||
306 | static struct commit *next_reflog_commit(struct commit_reflog *log) | |
307 | { | |
308 | for (; log->recno >= 0; log->recno--) { | |
309 | struct reflog_info *entry = &log->reflogs->items[log->recno]; | |
310 | struct object *obj = parse_object(&entry->noid); | |
311 | ||
312 | if (obj && obj->type == OBJ_COMMIT) | |
313 | return (struct commit *)obj; | |
314 | } | |
315 | return NULL; | |
316 | } | |
317 | ||
318 | static timestamp_t log_timestamp(struct commit_reflog *log) | |
319 | { | |
320 | return log->reflogs->items[log->recno].timestamp; | |
321 | } | |
322 | ||
323 | struct commit *next_reflog_entry(struct reflog_walk_info *walk) | |
324 | { | |
325 | struct commit_reflog *best = NULL; | |
326 | struct commit *best_commit = NULL; | |
327 | size_t i; | |
328 | ||
329 | for (i = 0; i < walk->nr; i++) { | |
330 | struct commit_reflog *log = walk->logs[i]; | |
331 | struct commit *commit = next_reflog_commit(log); | |
332 | ||
333 | if (!commit) | |
334 | continue; | |
335 | ||
336 | if (!best || log_timestamp(log) > log_timestamp(best)) { | |
337 | best = log; | |
338 | best_commit = commit; | |
339 | } | |
340 | } | |
341 | ||
342 | if (best) { | |
343 | best->recno--; | |
344 | walk->last_commit_reflog = best; | |
345 | return best_commit; | |
346 | } | |
347 | ||
348 | return NULL; | |
7f97de5e | 349 | } |