notes: extract enum notes_merge_strategy to notes-utils.h
[git/git.git] / notes-utils.c
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1#include "cache.h"
2#include "commit.h"
3#include "refs.h"
4#include "notes-utils.h"
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5
6void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
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7 const char *msg, size_t msg_len,
8 unsigned char *result_sha1)
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9{
10 unsigned char tree_sha1[20];
11
12 assert(t->initialized);
13
14 if (write_notes_tree(t, tree_sha1))
15 die("Failed to write notes tree to database");
16
17 if (!parents) {
18 /* Deduce parent commit from t->ref */
19 unsigned char parent_sha1[20];
20 if (!read_ref(t->ref, parent_sha1)) {
21 struct commit *parent = lookup_commit(parent_sha1);
5e7d4d3e 22 if (parse_commit(parent))
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23 die("Failed to find/parse commit %s", t->ref);
24 commit_list_insert(parent, &parents);
25 }
26 /* else: t->ref points to nothing, assume root/orphan commit */
27 }
28
3ffefb54 29 if (commit_tree(msg, msg_len, tree_sha1, parents, result_sha1, NULL, NULL))
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30 die("Failed to commit notes tree to database");
31}
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32
33void commit_notes(struct notes_tree *t, const char *msg)
34{
35 struct strbuf buf = STRBUF_INIT;
36 unsigned char commit_sha1[20];
37
38 if (!t)
39 t = &default_notes_tree;
40 if (!t->initialized || !t->ref || !*t->ref)
41 die(_("Cannot commit uninitialized/unreferenced notes tree"));
42 if (!t->dirty)
43 return; /* don't have to commit an unchanged tree */
44
45 /* Prepare commit message and reflog message */
46 strbuf_addstr(&buf, msg);
a0d4923d 47 strbuf_complete_line(&buf);
49c24704 48
3ffefb54 49 create_notes_commit(t, NULL, buf.buf, buf.len, commit_sha1);
49c24704 50 strbuf_insert(&buf, 0, "notes: ", 7); /* commit message starts at index 7 */
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51 update_ref(buf.buf, t->ref, commit_sha1, NULL, 0,
52 UPDATE_REFS_DIE_ON_ERR);
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53
54 strbuf_release(&buf);
55}
56
57static combine_notes_fn parse_combine_notes_fn(const char *v)
58{
59 if (!strcasecmp(v, "overwrite"))
60 return combine_notes_overwrite;
61 else if (!strcasecmp(v, "ignore"))
62 return combine_notes_ignore;
63 else if (!strcasecmp(v, "concatenate"))
64 return combine_notes_concatenate;
65 else if (!strcasecmp(v, "cat_sort_uniq"))
66 return combine_notes_cat_sort_uniq;
67 else
68 return NULL;
69}
70
71static int notes_rewrite_config(const char *k, const char *v, void *cb)
72{
73 struct notes_rewrite_cfg *c = cb;
59556548 74 if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
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75 c->enabled = git_config_bool(k, v);
76 return 0;
77 } else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
78 if (!v)
aa012e90 79 return config_error_nonbool(k);
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80 c->combine = parse_combine_notes_fn(v);
81 if (!c->combine) {
82 error(_("Bad notes.rewriteMode value: '%s'"), v);
83 return 1;
84 }
85 return 0;
86 } else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
87 /* note that a refs/ prefix is implied in the
88 * underlying for_each_glob_ref */
59556548 89 if (starts_with(v, "refs/notes/"))
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90 string_list_add_refs_by_glob(c->refs, v);
91 else
92 warning(_("Refusing to rewrite notes in %s"
93 " (outside of refs/notes/)"), v);
94 return 0;
95 }
96
97 return 0;
98}
99
100
101struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
102{
103 struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg));
104 const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT);
105 const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT);
106 c->cmd = cmd;
107 c->enabled = 1;
108 c->combine = combine_notes_concatenate;
109 c->refs = xcalloc(1, sizeof(struct string_list));
110 c->refs->strdup_strings = 1;
111 c->refs_from_env = 0;
112 c->mode_from_env = 0;
113 if (rewrite_mode_env) {
114 c->mode_from_env = 1;
115 c->combine = parse_combine_notes_fn(rewrite_mode_env);
116 if (!c->combine)
117 /* TRANSLATORS: The first %s is the name of the
118 environment variable, the second %s is its value */
119 error(_("Bad %s value: '%s'"), GIT_NOTES_REWRITE_MODE_ENVIRONMENT,
120 rewrite_mode_env);
121 }
122 if (rewrite_refs_env) {
123 c->refs_from_env = 1;
124 string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
125 }
126 git_config(notes_rewrite_config, c);
127 if (!c->enabled || !c->refs->nr) {
128 string_list_clear(c->refs, 0);
129 free(c->refs);
130 free(c);
131 return NULL;
132 }
133 c->trees = load_notes_trees(c->refs);
134 string_list_clear(c->refs, 0);
135 free(c->refs);
136 return c;
137}
138
139int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
140 const unsigned char *from_obj, const unsigned char *to_obj)
141{
142 int ret = 0;
143 int i;
144 for (i = 0; c->trees[i]; i++)
145 ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret;
146 return ret;
147}
148
149void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c, const char *msg)
150{
151 int i;
152 for (i = 0; c->trees[i]; i++) {
153 commit_notes(c->trees[i], msg);
154 free_notes(c->trees[i]);
155 }
156 free(c->trees);
157 free(c);
158}