notes-utils.con commit Merge branch 'jk/diff-blob' into maint (16ba0f4)
   1#include "cache.h"
   2#include "config.h"
   3#include "commit.h"
   4#include "refs.h"
   5#include "notes-utils.h"
   6
   7void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
   8                         const char *msg, size_t msg_len,
   9                         unsigned char *result_sha1)
  10{
  11        struct object_id tree_oid;
  12
  13        assert(t->initialized);
  14
  15        if (write_notes_tree(t, tree_oid.hash))
  16                die("Failed to write notes tree to database");
  17
  18        if (!parents) {
  19                /* Deduce parent commit from t->ref */
  20                struct object_id parent_oid;
  21                if (!read_ref(t->ref, parent_oid.hash)) {
  22                        struct commit *parent = lookup_commit(&parent_oid);
  23                        if (parse_commit(parent))
  24                                die("Failed to find/parse commit %s", t->ref);
  25                        commit_list_insert(parent, &parents);
  26                }
  27                /* else: t->ref points to nothing, assume root/orphan commit */
  28        }
  29
  30        if (commit_tree(msg, msg_len, tree_oid.hash, parents, result_sha1, NULL, NULL))
  31                die("Failed to commit notes tree to database");
  32}
  33
  34void commit_notes(struct notes_tree *t, const char *msg)
  35{
  36        struct strbuf buf = STRBUF_INIT;
  37        struct object_id commit_oid;
  38
  39        if (!t)
  40                t = &default_notes_tree;
  41        if (!t->initialized || !t->update_ref || !*t->update_ref)
  42                die(_("Cannot commit uninitialized/unreferenced notes tree"));
  43        if (!t->dirty)
  44                return; /* don't have to commit an unchanged tree */
  45
  46        /* Prepare commit message and reflog message */
  47        strbuf_addstr(&buf, msg);
  48        strbuf_complete_line(&buf);
  49
  50        create_notes_commit(t, NULL, buf.buf, buf.len, commit_oid.hash);
  51        strbuf_insert(&buf, 0, "notes: ", 7); /* commit message starts at index 7 */
  52        update_ref(buf.buf, t->update_ref, commit_oid.hash, NULL, 0,
  53                   UPDATE_REFS_DIE_ON_ERR);
  54
  55        strbuf_release(&buf);
  56}
  57
  58int parse_notes_merge_strategy(const char *v, enum notes_merge_strategy *s)
  59{
  60        if (!strcmp(v, "manual"))
  61                *s = NOTES_MERGE_RESOLVE_MANUAL;
  62        else if (!strcmp(v, "ours"))
  63                *s = NOTES_MERGE_RESOLVE_OURS;
  64        else if (!strcmp(v, "theirs"))
  65                *s = NOTES_MERGE_RESOLVE_THEIRS;
  66        else if (!strcmp(v, "union"))
  67                *s = NOTES_MERGE_RESOLVE_UNION;
  68        else if (!strcmp(v, "cat_sort_uniq"))
  69                *s = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
  70        else
  71                return -1;
  72
  73        return 0;
  74}
  75
  76static combine_notes_fn parse_combine_notes_fn(const char *v)
  77{
  78        if (!strcasecmp(v, "overwrite"))
  79                return combine_notes_overwrite;
  80        else if (!strcasecmp(v, "ignore"))
  81                return combine_notes_ignore;
  82        else if (!strcasecmp(v, "concatenate"))
  83                return combine_notes_concatenate;
  84        else if (!strcasecmp(v, "cat_sort_uniq"))
  85                return combine_notes_cat_sort_uniq;
  86        else
  87                return NULL;
  88}
  89
  90static int notes_rewrite_config(const char *k, const char *v, void *cb)
  91{
  92        struct notes_rewrite_cfg *c = cb;
  93        if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
  94                c->enabled = git_config_bool(k, v);
  95                return 0;
  96        } else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
  97                if (!v)
  98                        return config_error_nonbool(k);
  99                c->combine = parse_combine_notes_fn(v);
 100                if (!c->combine) {
 101                        error(_("Bad notes.rewriteMode value: '%s'"), v);
 102                        return 1;
 103                }
 104                return 0;
 105        } else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
 106                /* note that a refs/ prefix is implied in the
 107                 * underlying for_each_glob_ref */
 108                if (starts_with(v, "refs/notes/"))
 109                        string_list_add_refs_by_glob(c->refs, v);
 110                else
 111                        warning(_("Refusing to rewrite notes in %s"
 112                                " (outside of refs/notes/)"), v);
 113                return 0;
 114        }
 115
 116        return 0;
 117}
 118
 119
 120struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
 121{
 122        struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg));
 123        const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT);
 124        const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT);
 125        c->cmd = cmd;
 126        c->enabled = 1;
 127        c->combine = combine_notes_concatenate;
 128        c->refs = xcalloc(1, sizeof(struct string_list));
 129        c->refs->strdup_strings = 1;
 130        c->refs_from_env = 0;
 131        c->mode_from_env = 0;
 132        if (rewrite_mode_env) {
 133                c->mode_from_env = 1;
 134                c->combine = parse_combine_notes_fn(rewrite_mode_env);
 135                if (!c->combine)
 136                        /*
 137                         * TRANSLATORS: The first %s is the name of
 138                         * the environment variable, the second %s is
 139                         * its value.
 140                         */
 141                        error(_("Bad %s value: '%s'"), GIT_NOTES_REWRITE_MODE_ENVIRONMENT,
 142                                        rewrite_mode_env);
 143        }
 144        if (rewrite_refs_env) {
 145                c->refs_from_env = 1;
 146                string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
 147        }
 148        git_config(notes_rewrite_config, c);
 149        if (!c->enabled || !c->refs->nr) {
 150                string_list_clear(c->refs, 0);
 151                free(c->refs);
 152                free(c);
 153                return NULL;
 154        }
 155        c->trees = load_notes_trees(c->refs, NOTES_INIT_WRITABLE);
 156        string_list_clear(c->refs, 0);
 157        free(c->refs);
 158        return c;
 159}
 160
 161int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
 162                          const struct object_id *from_obj, const struct object_id *to_obj)
 163{
 164        int ret = 0;
 165        int i;
 166        for (i = 0; c->trees[i]; i++)
 167                ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret;
 168        return ret;
 169}
 170
 171void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c, const char *msg)
 172{
 173        int i;
 174        for (i = 0; c->trees[i]; i++) {
 175                commit_notes(c->trees[i], msg);
 176                free_notes(c->trees[i]);
 177        }
 178        free(c->trees);
 179        free(c);
 180}