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Commit | Line | Data |
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cfc5789a | 1 | #include "cache.h" |
4421a823 | 2 | #include "dir.h" |
cfc5789a JH |
3 | #include "resolve-undo.h" |
4 | #include "string-list.h" | |
5 | ||
6 | /* The only error case is to run out of memory in string-list */ | |
7 | void record_resolve_undo(struct index_state *istate, struct cache_entry *ce) | |
8 | { | |
9 | struct string_list_item *lost; | |
10 | struct resolve_undo_info *ui; | |
11 | struct string_list *resolve_undo; | |
12 | int stage = ce_stage(ce); | |
13 | ||
14 | if (!stage) | |
15 | return; | |
16 | ||
17 | if (!istate->resolve_undo) { | |
ca56dadb | 18 | CALLOC_ARRAY(resolve_undo, 1); |
cfc5789a JH |
19 | resolve_undo->strdup_strings = 1; |
20 | istate->resolve_undo = resolve_undo; | |
21 | } | |
22 | resolve_undo = istate->resolve_undo; | |
78a395d3 | 23 | lost = string_list_insert(resolve_undo, ce->name); |
cfc5789a JH |
24 | if (!lost->util) |
25 | lost->util = xcalloc(1, sizeof(*ui)); | |
26 | ui = lost->util; | |
5ac913c6 | 27 | oidcpy(&ui->oid[stage - 1], &ce->oid); |
cfc5789a JH |
28 | ui->mode[stage - 1] = ce->ce_mode; |
29 | } | |
30 | ||
8a57c6e9 | 31 | void resolve_undo_write(struct strbuf *sb, struct string_list *resolve_undo) |
cfc5789a | 32 | { |
8a57c6e9 AR |
33 | struct string_list_item *item; |
34 | for_each_string_list_item(item, resolve_undo) { | |
35 | struct resolve_undo_info *ui = item->util; | |
36 | int i; | |
cfc5789a | 37 | |
8a57c6e9 | 38 | if (!ui) |
cfc5789a | 39 | continue; |
8a57c6e9 AR |
40 | strbuf_addstr(sb, item->string); |
41 | strbuf_addch(sb, 0); | |
42 | for (i = 0; i < 3; i++) | |
43 | strbuf_addf(sb, "%o%c", ui->mode[i], 0); | |
44 | for (i = 0; i < 3; i++) { | |
45 | if (!ui->mode[i]) | |
46 | continue; | |
5ac913c6 | 47 | strbuf_add(sb, ui->oid[i].hash, the_hash_algo->rawsz); |
8a57c6e9 | 48 | } |
cfc5789a | 49 | } |
cfc5789a JH |
50 | } |
51 | ||
b8bba419 | 52 | struct string_list *resolve_undo_read(const char *data, unsigned long size) |
cfc5789a JH |
53 | { |
54 | struct string_list *resolve_undo; | |
55 | size_t len; | |
56 | char *endptr; | |
57 | int i; | |
5ac913c6 | 58 | const unsigned rawsz = the_hash_algo->rawsz; |
cfc5789a | 59 | |
ca56dadb | 60 | CALLOC_ARRAY(resolve_undo, 1); |
cfc5789a JH |
61 | resolve_undo->strdup_strings = 1; |
62 | ||
63 | while (size) { | |
64 | struct string_list_item *lost; | |
65 | struct resolve_undo_info *ui; | |
66 | ||
67 | len = strlen(data) + 1; | |
68 | if (size <= len) | |
69 | goto error; | |
78a395d3 | 70 | lost = string_list_insert(resolve_undo, data); |
cfc5789a JH |
71 | if (!lost->util) |
72 | lost->util = xcalloc(1, sizeof(*ui)); | |
73 | ui = lost->util; | |
74 | size -= len; | |
75 | data += len; | |
76 | ||
77 | for (i = 0; i < 3; i++) { | |
78 | ui->mode[i] = strtoul(data, &endptr, 8); | |
79 | if (!endptr || endptr == data || *endptr) | |
80 | goto error; | |
81 | len = (endptr + 1) - (char*)data; | |
82 | if (size <= len) | |
83 | goto error; | |
84 | size -= len; | |
85 | data += len; | |
86 | } | |
87 | ||
88 | for (i = 0; i < 3; i++) { | |
89 | if (!ui->mode[i]) | |
90 | continue; | |
5ac913c6 | 91 | if (size < rawsz) |
cfc5789a | 92 | goto error; |
69d12425 | 93 | oidread(&ui->oid[i], (const unsigned char *)data); |
5ac913c6 | 94 | size -= rawsz; |
95 | data += rawsz; | |
cfc5789a JH |
96 | } |
97 | } | |
98 | return resolve_undo; | |
99 | ||
100 | error: | |
101 | string_list_clear(resolve_undo, 1); | |
102 | error("Index records invalid resolve-undo information"); | |
103 | return NULL; | |
104 | } | |
105 | ||
106 | void resolve_undo_clear_index(struct index_state *istate) | |
107 | { | |
108 | struct string_list *resolve_undo = istate->resolve_undo; | |
109 | if (!resolve_undo) | |
110 | return; | |
111 | string_list_clear(resolve_undo, 1); | |
112 | free(resolve_undo); | |
113 | istate->resolve_undo = NULL; | |
6c306a34 | 114 | istate->cache_changed |= RESOLVE_UNDO_CHANGED; |
cfc5789a | 115 | } |
4421a823 JH |
116 | |
117 | int unmerge_index_entry_at(struct index_state *istate, int pos) | |
118 | { | |
9c5e6c80 | 119 | const struct cache_entry *ce; |
4421a823 JH |
120 | struct string_list_item *item; |
121 | struct resolve_undo_info *ru; | |
e721c154 | 122 | int i, err = 0, matched; |
5699d17e | 123 | char *name; |
4421a823 JH |
124 | |
125 | if (!istate->resolve_undo) | |
126 | return pos; | |
127 | ||
128 | ce = istate->cache[pos]; | |
129 | if (ce_stage(ce)) { | |
130 | /* already unmerged */ | |
131 | while ((pos < istate->cache_nr) && | |
132 | ! strcmp(istate->cache[pos]->name, ce->name)) | |
133 | pos++; | |
134 | return pos - 1; /* return the last entry processed */ | |
135 | } | |
e8c8b713 | 136 | item = string_list_lookup(istate->resolve_undo, ce->name); |
4421a823 JH |
137 | if (!item) |
138 | return pos; | |
139 | ru = item->util; | |
140 | if (!ru) | |
141 | return pos; | |
e721c154 | 142 | matched = ce->ce_flags & CE_MATCHED; |
5699d17e | 143 | name = xstrdup(ce->name); |
4421a823 JH |
144 | remove_index_entry_at(istate, pos); |
145 | for (i = 0; i < 3; i++) { | |
146 | struct cache_entry *nce; | |
147 | if (!ru->mode[i]) | |
148 | continue; | |
a849735b JM |
149 | nce = make_cache_entry(istate, |
150 | ru->mode[i], | |
151 | &ru->oid[i], | |
5699d17e | 152 | name, i + 1, 0); |
e721c154 NTND |
153 | if (matched) |
154 | nce->ce_flags |= CE_MATCHED; | |
4421a823 JH |
155 | if (add_index_entry(istate, nce, ADD_CACHE_OK_TO_ADD)) { |
156 | err = 1; | |
5699d17e | 157 | error("cannot unmerge '%s'", name); |
4421a823 JH |
158 | } |
159 | } | |
5699d17e | 160 | free(name); |
4421a823 JH |
161 | if (err) |
162 | return pos; | |
163 | free(ru); | |
164 | item->util = NULL; | |
165 | return unmerge_index_entry_at(istate, pos); | |
166 | } | |
167 | ||
e721c154 NTND |
168 | void unmerge_marked_index(struct index_state *istate) |
169 | { | |
170 | int i; | |
171 | ||
172 | if (!istate->resolve_undo) | |
173 | return; | |
174 | ||
dc26b23e DS |
175 | /* TODO: audit for interaction with sparse-index. */ |
176 | ensure_full_index(istate); | |
e721c154 | 177 | for (i = 0; i < istate->cache_nr; i++) { |
9c5e6c80 | 178 | const struct cache_entry *ce = istate->cache[i]; |
e721c154 NTND |
179 | if (ce->ce_flags & CE_MATCHED) |
180 | i = unmerge_index_entry_at(istate, i); | |
181 | } | |
182 | } | |
183 | ||
5ab06518 | 184 | void unmerge_index(struct index_state *istate, const struct pathspec *pathspec) |
4421a823 JH |
185 | { |
186 | int i; | |
187 | ||
188 | if (!istate->resolve_undo) | |
189 | return; | |
190 | ||
dc26b23e DS |
191 | /* TODO: audit for interaction with sparse-index. */ |
192 | ensure_full_index(istate); | |
4421a823 | 193 | for (i = 0; i < istate->cache_nr; i++) { |
9c5e6c80 | 194 | const struct cache_entry *ce = istate->cache[i]; |
ff82d126 | 195 | if (!ce_path_match(istate, ce, pathspec, NULL)) |
4421a823 JH |
196 | continue; |
197 | i = unmerge_index_entry_at(istate, i); | |
198 | } | |
199 | } |