notes-utils.c

   1 #include "git-compat-util.h"
   2 #include "config.h"
   3 #include "commit.h"
   4 #include "environment.h"
   5 #include "gettext.h"
   6 #include "refs.h"
   7 #include "notes-utils.h"
   8 #include "repository.h"
   9
  10 void create_notes_commit(struct repository *r,
  11                          struct notes_tree *t,
  12                          struct commit_list *parents,
  13                          const char *msg, size_t msg_len,
  14                          struct object_id *result_oid)
  15 {
  16         struct object_id tree_oid;
  17
  18         assert(t->initialized);
  19
  20         if (write_notes_tree(t, &tree_oid))
  21                 die("Failed to write notes tree to database");
  22
  23         if (!parents) {
  24                 /* Deduce parent commit from t->ref */
  25                 struct object_id parent_oid;
  26                 if (!read_ref(t->ref, &parent_oid)) {
  27                         struct commit *parent = lookup_commit(r, &parent_oid);
  28                         if (repo_parse_commit(r, parent))
  29                                 die("Failed to find/parse commit %s", t->ref);
  30                         commit_list_insert(parent, &parents);
  31                 }
  32                 /* else: t->ref points to nothing, assume root/orphan commit */
  33         }
  34
  35         if (commit_tree(msg, msg_len, &tree_oid, parents, result_oid, NULL,
  36                         NULL))
  37                 die("Failed to commit notes tree to database");
  38 }
  39
  40 void commit_notes(struct repository *r, struct notes_tree *t, const char *msg)
  41 {
  42         struct strbuf buf = STRBUF_INIT;
  43         struct object_id commit_oid;
  44
  45         if (!t)
  46                 t = &default_notes_tree;
  47         if (!t->initialized || !t->update_ref || !*t->update_ref)
  48                 die(_("Cannot commit uninitialized/unreferenced notes tree"));
  49         if (!t->dirty)
  50                 return; /* don't have to commit an unchanged tree */
  51
  52         /* Prepare commit message and reflog message */
  53         strbuf_addstr(&buf, msg);
  54         strbuf_complete_line(&buf);
  55
  56         create_notes_commit(r, t, NULL, buf.buf, buf.len, &commit_oid);
  57         strbuf_insertstr(&buf, 0, "notes: ");
  58         update_ref(buf.buf, t->update_ref, &commit_oid, NULL, 0,
  59                    UPDATE_REFS_DIE_ON_ERR);
  60
  61         strbuf_release(&buf);
  62 }
  63
  64 int parse_notes_merge_strategy(const char *v, enum notes_merge_strategy *s)
  65 {
  66         if (!strcmp(v, "manual"))
  67                 *s = NOTES_MERGE_RESOLVE_MANUAL;
  68         else if (!strcmp(v, "ours"))
  69                 *s = NOTES_MERGE_RESOLVE_OURS;
  70         else if (!strcmp(v, "theirs"))
  71                 *s = NOTES_MERGE_RESOLVE_THEIRS;
  72         else if (!strcmp(v, "union"))
  73                 *s = NOTES_MERGE_RESOLVE_UNION;
  74         else if (!strcmp(v, "cat_sort_uniq"))
  75                 *s = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
  76         else
  77                 return -1;
  78
  79         return 0;
  80 }
  81
  82 static combine_notes_fn parse_combine_notes_fn(const char *v)
  83 {
  84         if (!strcasecmp(v, "overwrite"))
  85                 return combine_notes_overwrite;
  86         else if (!strcasecmp(v, "ignore"))
  87                 return combine_notes_ignore;
  88         else if (!strcasecmp(v, "concatenate"))
  89                 return combine_notes_concatenate;
  90         else if (!strcasecmp(v, "cat_sort_uniq"))
  91                 return combine_notes_cat_sort_uniq;
  92         else
  93                 return NULL;
  94 }
  95
  96 static int notes_rewrite_config(const char *k, const char *v, void *cb)
  97 {
  98         struct notes_rewrite_cfg *c = cb;
  99         if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
 100                 c->enabled = git_config_bool(k, v);
 101                 return 0;
 102         } else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
 103                 if (!v)
 104                         return config_error_nonbool(k);
 105                 c->combine = parse_combine_notes_fn(v);
 106                 if (!c->combine) {
 107                         error(_("Bad notes.rewriteMode value: '%s'"), v);
 108                         return 1;
 109                 }
 110                 return 0;
 111         } else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
 112                 /* note that a refs/ prefix is implied in the
 113                  * underlying for_each_glob_ref */
 114                 if (starts_with(v, "refs/notes/"))
 115                         string_list_add_refs_by_glob(c->refs, v);
 116                 else
 117                         warning(_("Refusing to rewrite notes in %s"
 118                                 " (outside of refs/notes/)"), v);
 119                 return 0;
 120         }
 121
 122         return 0;
 123 }
 124
 125
 126 struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
 127 {
 128         struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg));
 129         const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT);
 130         const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT);
 131         c->cmd = cmd;
 132         c->enabled = 1;
 133         c->combine = combine_notes_concatenate;
 134         CALLOC_ARRAY(c->refs, 1);
 135         c->refs->strdup_strings = 1;
 136         c->refs_from_env = 0;
 137         c->mode_from_env = 0;
 138         if (rewrite_mode_env) {
 139                 c->mode_from_env = 1;
 140                 c->combine = parse_combine_notes_fn(rewrite_mode_env);
 141                 if (!c->combine)
 142                         /*
 143                          * TRANSLATORS: The first %s is the name of
 144                          * the environment variable, the second %s is
 145                          * its value.
 146                          */
 147                         error(_("Bad %s value: '%s'"), GIT_NOTES_REWRITE_MODE_ENVIRONMENT,
 148                                         rewrite_mode_env);
 149         }
 150         if (rewrite_refs_env) {
 151                 c->refs_from_env = 1;
 152                 string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
 153         }
 154         git_config(notes_rewrite_config, c);
 155         if (!c->enabled || !c->refs->nr) {
 156                 string_list_clear(c->refs, 0);
 157                 free(c->refs);
 158                 free(c);
 159                 return NULL;
 160         }
 161         c->trees = load_notes_trees(c->refs, NOTES_INIT_WRITABLE);
 162         string_list_clear(c->refs, 0);
 163         free(c->refs);
 164         return c;
 165 }
 166
 167 int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
 168                           const struct object_id *from_obj, const struct object_id *to_obj)
 169 {
 170         int ret = 0;
 171         int i;
 172         for (i = 0; c->trees[i]; i++)
 173                 ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret;
 174         return ret;
 175 }
 176
 177 void finish_copy_notes_for_rewrite(struct repository *r,
 178                                    struct notes_rewrite_cfg *c,
 179                                    const char *msg)
 180 {
 181         int i;
 182         for (i = 0; c->trees[i]; i++) {
 183                 commit_notes(r, c->trees[i], msg);
 184                 free_notes(c->trees[i]);
 185         }
 186         free(c->trees);
 187         free(c);
 188 }