convert run_add_interactive to use struct pathspec
[git/git.git] / resolve-undo.c
CommitLineData
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 */
7void 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) {
18 resolve_undo = xcalloc(1, sizeof(*resolve_undo));
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;
27 hashcpy(ui->sha1[stage - 1], ce->sha1);
28 ui->mode[stage - 1] = ce->ce_mode;
29}
30
8a57c6e9 31void 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;
47 strbuf_add(sb, ui->sha1[i], 20);
48 }
cfc5789a 49 }
cfc5789a
JH
50}
51
b8bba419 52struct 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;
58
59 resolve_undo = xcalloc(1, sizeof(*resolve_undo));
60 resolve_undo->strdup_strings = 1;
61
62 while (size) {
63 struct string_list_item *lost;
64 struct resolve_undo_info *ui;
65
66 len = strlen(data) + 1;
67 if (size <= len)
68 goto error;
78a395d3 69 lost = string_list_insert(resolve_undo, data);
cfc5789a
JH
70 if (!lost->util)
71 lost->util = xcalloc(1, sizeof(*ui));
72 ui = lost->util;
73 size -= len;
74 data += len;
75
76 for (i = 0; i < 3; i++) {
77 ui->mode[i] = strtoul(data, &endptr, 8);
78 if (!endptr || endptr == data || *endptr)
79 goto error;
80 len = (endptr + 1) - (char*)data;
81 if (size <= len)
82 goto error;
83 size -= len;
84 data += len;
85 }
86
87 for (i = 0; i < 3; i++) {
88 if (!ui->mode[i])
89 continue;
90 if (size < 20)
91 goto error;
b8bba419 92 hashcpy(ui->sha1[i], (const unsigned char *)data);
cfc5789a
JH
93 size -= 20;
94 data += 20;
95 }
96 }
97 return resolve_undo;
98
99error:
100 string_list_clear(resolve_undo, 1);
101 error("Index records invalid resolve-undo information");
102 return NULL;
103}
104
105void resolve_undo_clear_index(struct index_state *istate)
106{
107 struct string_list *resolve_undo = istate->resolve_undo;
108 if (!resolve_undo)
109 return;
110 string_list_clear(resolve_undo, 1);
111 free(resolve_undo);
112 istate->resolve_undo = NULL;
113 istate->cache_changed = 1;
114}
4421a823
JH
115
116int unmerge_index_entry_at(struct index_state *istate, int pos)
117{
118 struct cache_entry *ce;
119 struct string_list_item *item;
120 struct resolve_undo_info *ru;
e721c154 121 int i, err = 0, matched;
4421a823
JH
122
123 if (!istate->resolve_undo)
124 return pos;
125
126 ce = istate->cache[pos];
127 if (ce_stage(ce)) {
128 /* already unmerged */
129 while ((pos < istate->cache_nr) &&
130 ! strcmp(istate->cache[pos]->name, ce->name))
131 pos++;
132 return pos - 1; /* return the last entry processed */
133 }
e8c8b713 134 item = string_list_lookup(istate->resolve_undo, ce->name);
4421a823
JH
135 if (!item)
136 return pos;
137 ru = item->util;
138 if (!ru)
139 return pos;
e721c154 140 matched = ce->ce_flags & CE_MATCHED;
4421a823
JH
141 remove_index_entry_at(istate, pos);
142 for (i = 0; i < 3; i++) {
143 struct cache_entry *nce;
144 if (!ru->mode[i])
145 continue;
146 nce = make_cache_entry(ru->mode[i], ru->sha1[i],
147 ce->name, i + 1, 0);
e721c154
NTND
148 if (matched)
149 nce->ce_flags |= CE_MATCHED;
4421a823
JH
150 if (add_index_entry(istate, nce, ADD_CACHE_OK_TO_ADD)) {
151 err = 1;
152 error("cannot unmerge '%s'", ce->name);
153 }
154 }
155 if (err)
156 return pos;
157 free(ru);
158 item->util = NULL;
159 return unmerge_index_entry_at(istate, pos);
160}
161
e721c154
NTND
162void unmerge_marked_index(struct index_state *istate)
163{
164 int i;
165
166 if (!istate->resolve_undo)
167 return;
168
169 for (i = 0; i < istate->cache_nr; i++) {
170 struct cache_entry *ce = istate->cache[i];
171 if (ce->ce_flags & CE_MATCHED)
172 i = unmerge_index_entry_at(istate, i);
173 }
174}
175
4421a823
JH
176void unmerge_index(struct index_state *istate, const char **pathspec)
177{
178 int i;
179
180 if (!istate->resolve_undo)
181 return;
182
183 for (i = 0; i < istate->cache_nr; i++) {
184 struct cache_entry *ce = istate->cache[i];
185 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL))
186 continue;
187 i = unmerge_index_entry_at(istate, i);
188 }
189}