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