notes-utils.c

   1 #include "cache.h"
   2 #include "config.h"
   3 #include "commit.h"
   4 #include "refs.h"
   5 #include "notes-utils.h"
   6 #include "repository.h"
   7
   8 void create_notes_commit(struct repository *r,
   9                          struct notes_tree *t,
  10                          struct commit_list *parents,
  11                          const char *msg, size_t msg_len,
  12                          struct object_id *result_oid)
  13 {
  14         struct object_id tree_oid;
  15
  16         assert(t->initialized);
  17
  18         if (write_notes_tree(t, &tree_oid))
  19                 die("Failed to write notes tree to database");
  20
  21         if (!parents) {
  22                 /* Deduce parent commit from t->ref */
  23                 struct object_id parent_oid;
  24                 if (!read_ref(t->ref, &parent_oid)) {
  25                         struct commit *parent = lookup_commit(r, &parent_oid);
  26                         if (parse_commit(parent))
  27                                 die("Failed to find/parse commit %s", t->ref);
  28                         commit_list_insert(parent, &parents);
  29                 }
  30                 /* else: t->ref points to nothing, assume root/orphan commit */
  31         }
  32
  33         if (commit_tree(msg, msg_len, &tree_oid, parents, result_oid, NULL,
  34                         NULL))
  35                 die("Failed to commit notes tree to database");
  36 }
  37
  38 void commit_notes(struct repository *r, struct notes_tree *t, const char *msg)
  39 {
  40         struct strbuf buf = STRBUF_INIT;
  41         struct object_id commit_oid;
  42
  43         if (!t)
  44                 t = &default_notes_tree;
  45         if (!t->initialized || !t->update_ref || !*t->update_ref)
  46                 die(_("Cannot commit uninitialized/unreferenced notes tree"));
  47         if (!t->dirty)
  48                 return; /* don't have to commit an unchanged tree */
  49
  50         /* Prepare commit message and reflog message */
  51         strbuf_addstr(&buf, msg);
  52         strbuf_complete_line(&buf);
  53
  54         create_notes_commit(r, t, NULL, buf.buf, buf.len, &commit_oid);
  55         strbuf_insertstr(&buf, 0, "notes: ");
  56         update_ref(buf.buf, t->update_ref, &commit_oid, NULL, 0,
  57                    UPDATE_REFS_DIE_ON_ERR);
  58
  59         strbuf_release(&buf);
  60 }
  61
  62 int parse_notes_merge_strategy(const char *v, enum notes_merge_strategy *s)
  63 {
  64         if (!strcmp(v, "manual"))
  65                 *s = NOTES_MERGE_RESOLVE_MANUAL;
  66         else if (!strcmp(v, "ours"))
  67                 *s = NOTES_MERGE_RESOLVE_OURS;
  68         else if (!strcmp(v, "theirs"))
  69                 *s = NOTES_MERGE_RESOLVE_THEIRS;
  70         else if (!strcmp(v, "union"))
  71                 *s = NOTES_MERGE_RESOLVE_UNION;
  72         else if (!strcmp(v, "cat_sort_uniq"))
  73                 *s = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
  74         else
  75                 return -1;
  76
  77         return 0;
  78 }
  79
  80 static combine_notes_fn parse_combine_notes_fn(const char *v)
  81 {
  82         if (!strcasecmp(v, "overwrite"))
  83                 return combine_notes_overwrite;
  84         else if (!strcasecmp(v, "ignore"))
  85                 return combine_notes_ignore;
  86         else if (!strcasecmp(v, "concatenate"))
  87                 return combine_notes_concatenate;
  88         else if (!strcasecmp(v, "cat_sort_uniq"))
  89                 return combine_notes_cat_sort_uniq;
  90         else
  91                 return NULL;
  92 }
  93
  94 static int notes_rewrite_config(const char *k, const char *v, void *cb)
  95 {
  96         struct notes_rewrite_cfg *c = cb;
  97         if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
  98                 c->enabled = git_config_bool(k, v);
  99                 return 0;
 100         } else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
 101                 if (!v)
 102                         return config_error_nonbool(k);
 103                 c->combine = parse_combine_notes_fn(v);
 104                 if (!c->combine) {
 105                         error(_("Bad notes.rewriteMode value: '%s'"), v);
 106                         return 1;
 107                 }
 108                 return 0;
 109         } else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
 110                 /* note that a refs/ prefix is implied in the
 111                  * underlying for_each_glob_ref */
 112                 if (starts_with(v, "refs/notes/"))
 113                         string_list_add_refs_by_glob(c->refs, v);
 114                 else
 115                         warning(_("Refusing to rewrite notes in %s"
 116                                 " (outside of refs/notes/)"), v);
 117                 return 0;
 118         }
 119
 120         return 0;
 121 }
 122
 123
 124 struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
 125 {
 126         struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg));
 127         const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT);
 128         const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT);
 129         c->cmd = cmd;
 130         c->enabled = 1;
 131         c->combine = combine_notes_concatenate;
 132         c->refs = xcalloc(1, sizeof(struct string_list));
 133         c->refs->strdup_strings = 1;
 134         c->refs_from_env = 0;
 135         c->mode_from_env = 0;
 136         if (rewrite_mode_env) {
 137                 c->mode_from_env = 1;
 138                 c->combine = parse_combine_notes_fn(rewrite_mode_env);
 139                 if (!c->combine)
 140                         /*
 141                          * TRANSLATORS: The first %s is the name of
 142                          * the environment variable, the second %s is
 143                          * its value.
 144                          */
 145                         error(_("Bad %s value: '%s'"), GIT_NOTES_REWRITE_MODE_ENVIRONMENT,
 146                                         rewrite_mode_env);
 147         }
 148         if (rewrite_refs_env) {
 149                 c->refs_from_env = 1;
 150                 string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
 151         }
 152         git_config(notes_rewrite_config, c);
 153         if (!c->enabled || !c->refs->nr) {
 154                 string_list_clear(c->refs, 0);
 155                 free(c->refs);
 156                 free(c);
 157                 return NULL;
 158         }
 159         c->trees = load_notes_trees(c->refs, NOTES_INIT_WRITABLE);
 160         string_list_clear(c->refs, 0);
 161         free(c->refs);
 162         return c;
 163 }
 164
 165 int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
 166                           const struct object_id *from_obj, const struct object_id *to_obj)
 167 {
 168         int ret = 0;
 169         int i;
 170         for (i = 0; c->trees[i]; i++)
 171                 ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret;
 172         return ret;
 173 }
 174
 175 void finish_copy_notes_for_rewrite(struct repository *r,
 176                                    struct notes_rewrite_cfg *c,
 177                                    const char *msg)
 178 {
 179         int i;
 180         for (i = 0; c->trees[i]; i++) {
 181                 commit_notes(r, c->trees[i], msg);
 182                 free_notes(c->trees[i]);
 183         }
 184         free(c->trees);
 185         free(c);
 186 }