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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" | |
6 | #include "path-list.h" | |
7 | ||
8 | struct complete_reflogs { | |
9 | char *ref; | |
10 | struct reflog_info { | |
11 | unsigned char osha1[20], nsha1[20]; | |
12 | char *email; | |
13 | unsigned long timestamp; | |
14 | int tz; | |
15 | char *message; | |
16 | } *items; | |
17 | int nr, alloc; | |
18 | }; | |
19 | ||
20 | static int read_one_reflog(unsigned char *osha1, unsigned char *nsha1, | |
21 | const char *email, unsigned long timestamp, int tz, | |
22 | const char *message, void *cb_data) | |
23 | { | |
24 | struct complete_reflogs *array = cb_data; | |
25 | struct reflog_info *item; | |
26 | ||
27 | if (array->nr >= array->alloc) { | |
28 | array->alloc = alloc_nr(array->nr + 1); | |
29 | array->items = xrealloc(array->items, array->alloc * | |
30 | sizeof(struct reflog_info)); | |
31 | } | |
32 | item = array->items + array->nr; | |
33 | memcpy(item->osha1, osha1, 20); | |
34 | memcpy(item->nsha1, nsha1, 20); | |
35 | item->email = xstrdup(email); | |
36 | item->timestamp = timestamp; | |
37 | item->tz = tz; | |
38 | item->message = xstrdup(message); | |
39 | array->nr++; | |
40 | return 0; | |
41 | } | |
42 | ||
43 | static struct complete_reflogs *read_complete_reflog(const char *ref) | |
44 | { | |
45 | struct complete_reflogs *reflogs = | |
46 | xcalloc(sizeof(struct complete_reflogs), 1); | |
47 | reflogs->ref = xstrdup(ref); | |
48 | for_each_reflog_ent(ref, read_one_reflog, reflogs); | |
49 | if (reflogs->nr == 0) { | |
50 | unsigned char sha1[20]; | |
51 | const char *name = resolve_ref(ref, sha1, 1, NULL); | |
52 | if (name) | |
53 | for_each_reflog_ent(name, read_one_reflog, reflogs); | |
54 | } | |
55 | if (reflogs->nr == 0) { | |
56 | int len = strlen(ref); | |
57 | char *refname = xmalloc(len + 12); | |
58 | sprintf(refname, "refs/%s", ref); | |
59 | for_each_reflog_ent(refname, read_one_reflog, reflogs); | |
60 | if (reflogs->nr == 0) { | |
61 | sprintf(refname, "refs/heads/%s", ref); | |
62 | for_each_reflog_ent(refname, read_one_reflog, reflogs); | |
63 | } | |
64 | free(refname); | |
65 | } | |
66 | return reflogs; | |
67 | } | |
68 | ||
69 | static int get_reflog_recno_by_time(struct complete_reflogs *array, | |
70 | unsigned long timestamp) | |
71 | { | |
72 | int i; | |
73 | for (i = array->nr - 1; i >= 0; i++) | |
74 | if (timestamp >= array->items[i].timestamp) | |
75 | return i; | |
76 | return -1; | |
77 | } | |
78 | ||
79 | struct commit_info_lifo { | |
80 | struct commit_info { | |
81 | struct commit *commit; | |
82 | void *util; | |
83 | } *items; | |
84 | int nr, alloc; | |
85 | }; | |
86 | ||
87 | static struct commit_info *get_commit_info(struct commit *commit, | |
88 | struct commit_info_lifo *lifo, int pop) | |
89 | { | |
90 | int i; | |
91 | for (i = 0; i < lifo->nr; i++) | |
92 | if (lifo->items[i].commit == commit) { | |
93 | struct commit_info *result = &lifo->items[i]; | |
94 | if (pop) { | |
95 | if (i + 1 < lifo->nr) | |
96 | memmove(lifo->items + i, | |
97 | lifo->items + i + 1, | |
98 | (lifo->nr - i) * | |
99 | sizeof(struct commit_info)); | |
100 | lifo->nr--; | |
101 | } | |
102 | return result; | |
103 | } | |
104 | return NULL; | |
105 | } | |
106 | ||
107 | static void add_commit_info(struct commit *commit, void *util, | |
108 | struct commit_info_lifo *lifo) | |
109 | { | |
110 | struct commit_info *info; | |
111 | if (lifo->nr >= lifo->alloc) { | |
112 | lifo->alloc = alloc_nr(lifo->nr + 1); | |
113 | lifo->items = xrealloc(lifo->items, | |
114 | lifo->alloc * sizeof(struct commit_info)); | |
115 | } | |
116 | info = lifo->items + lifo->nr; | |
117 | info->commit = commit; | |
118 | info->util = util; | |
119 | lifo->nr++; | |
120 | } | |
121 | ||
122 | struct commit_reflog { | |
123 | int flag, recno; | |
124 | struct complete_reflogs *reflogs; | |
125 | }; | |
126 | ||
127 | struct reflog_walk_info { | |
128 | struct commit_info_lifo reflogs; | |
129 | struct path_list complete_reflogs; | |
130 | struct commit_reflog *last_commit_reflog; | |
131 | }; | |
132 | ||
133 | void init_reflog_walk(struct reflog_walk_info** info) | |
134 | { | |
135 | *info = xcalloc(sizeof(struct reflog_walk_info), 1); | |
136 | } | |
137 | ||
138 | void add_reflog_for_walk(struct reflog_walk_info *info, | |
139 | struct commit *commit, const char *name) | |
140 | { | |
141 | unsigned long timestamp = 0; | |
142 | int recno = -1; | |
143 | struct path_list_item *item; | |
144 | struct complete_reflogs *reflogs; | |
145 | char *branch, *at = strchr(name, '@'); | |
146 | struct commit_reflog *commit_reflog; | |
147 | ||
db055e65 JS |
148 | if (commit->object.flags & UNINTERESTING) |
149 | die ("Cannot walk reflogs for %s", name); | |
150 | ||
8860fd42 JS |
151 | branch = xstrdup(name); |
152 | if (at && at[1] == '{') { | |
153 | char *ep; | |
154 | branch[at - name] = '\0'; | |
155 | recno = strtoul(at + 2, &ep, 10); | |
156 | if (*ep != '}') { | |
157 | recno = -1; | |
158 | timestamp = approxidate(at + 2); | |
159 | } | |
160 | } else | |
161 | recno = 0; | |
162 | ||
163 | item = path_list_lookup(branch, &info->complete_reflogs); | |
164 | if (item) | |
165 | reflogs = item->util; | |
166 | else { | |
167 | reflogs = read_complete_reflog(branch); | |
168 | if (!reflogs || reflogs->nr == 0) | |
169 | die("No reflogs found for '%s'", branch); | |
170 | path_list_insert(branch, &info->complete_reflogs)->util | |
171 | = reflogs; | |
172 | } | |
173 | ||
174 | commit_reflog = xcalloc(sizeof(struct commit_reflog), 1); | |
175 | if (recno < 0) { | |
176 | commit_reflog->flag = 1; | |
177 | commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp); | |
178 | if (commit_reflog->recno < 0) { | |
179 | free(branch); | |
180 | free(commit_reflog); | |
181 | return; | |
182 | } | |
183 | } else | |
184 | commit_reflog->recno = reflogs->nr - recno - 1; | |
185 | commit_reflog->reflogs = reflogs; | |
186 | ||
187 | add_commit_info(commit, commit_reflog, &info->reflogs); | |
188 | } | |
189 | ||
190 | void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit) | |
191 | { | |
192 | struct commit_info *commit_info = | |
193 | get_commit_info(commit, &info->reflogs, 0); | |
194 | struct commit_reflog *commit_reflog; | |
195 | struct reflog_info *reflog; | |
196 | ||
197 | info->last_commit_reflog = NULL; | |
198 | if (!commit_info) | |
199 | return; | |
200 | ||
201 | commit_reflog = commit_info->util; | |
202 | if (commit_reflog->recno < 0) { | |
203 | commit->parents = NULL; | |
204 | return; | |
205 | } | |
206 | ||
207 | reflog = &commit_reflog->reflogs->items[commit_reflog->recno]; | |
208 | info->last_commit_reflog = commit_reflog; | |
209 | commit_reflog->recno--; | |
210 | commit_info->commit = (struct commit *)parse_object(reflog->osha1); | |
211 | if (!commit_info->commit) { | |
212 | commit->parents = NULL; | |
213 | return; | |
214 | } | |
215 | ||
216 | commit->parents = xcalloc(sizeof(struct commit_list), 1); | |
217 | commit->parents->item = commit_info->commit; | |
218 | commit->object.flags &= ~(ADDED | SEEN | SHOWN); | |
219 | } | |
220 | ||
221 | void show_reflog_message(struct reflog_walk_info* info) | |
222 | { | |
223 | if (info && info->last_commit_reflog) { | |
224 | struct commit_reflog *commit_reflog = info->last_commit_reflog; | |
225 | struct reflog_info *info; | |
226 | ||
227 | printf("Reflog: %s@{", commit_reflog->reflogs->ref); | |
228 | info = &commit_reflog->reflogs->items[commit_reflog->recno + 1]; | |
229 | if (commit_reflog->flag) | |
230 | printf("%s", show_rfc2822_date(info->timestamp, | |
231 | info->tz)); | |
232 | else | |
233 | printf("%d", commit_reflog->reflogs->nr | |
234 | - 2 - commit_reflog->recno); | |
235 | printf("} (%s)\nReflog message: %s", | |
236 | info->email, info->message); | |
237 | } | |
238 | } |