diff options
Diffstat (limited to 'notes-utils.c')
| -rw-r--r-- | notes-utils.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/notes-utils.c b/notes-utils.c new file mode 100644 index 0000000000..a0b1d7be98 --- /dev/null +++ b/notes-utils.c @@ -0,0 +1,158 @@ +#include "cache.h" +#include "commit.h" +#include "refs.h" +#include "notes-utils.h" + +void create_notes_commit(struct notes_tree *t, struct commit_list *parents, + const struct strbuf *msg, unsigned char *result_sha1) +{ + unsigned char tree_sha1[20]; + + assert(t->initialized); + + if (write_notes_tree(t, tree_sha1)) + die("Failed to write notes tree to database"); + + if (!parents) { + /* Deduce parent commit from t->ref */ + unsigned char parent_sha1[20]; + if (!read_ref(t->ref, parent_sha1)) { + struct commit *parent = lookup_commit(parent_sha1); + if (parse_commit(parent)) + die("Failed to find/parse commit %s", t->ref); + commit_list_insert(parent, &parents); + } + /* else: t->ref points to nothing, assume root/orphan commit */ + } + + if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL, NULL)) + die("Failed to commit notes tree to database"); +} + +void commit_notes(struct notes_tree *t, const char *msg) +{ + struct strbuf buf = STRBUF_INIT; + unsigned char commit_sha1[20]; + + if (!t) + t = &default_notes_tree; + if (!t->initialized || !t->ref || !*t->ref) + die(_("Cannot commit uninitialized/unreferenced notes tree")); + if (!t->dirty) + return; /* don't have to commit an unchanged tree */ + + /* Prepare commit message and reflog message */ + strbuf_addstr(&buf, msg); + if (buf.buf[buf.len - 1] != '\n') + strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */ + + create_notes_commit(t, NULL, &buf, commit_sha1); + strbuf_insert(&buf, 0, "notes: ", 7); /* commit message starts at index 7 */ + update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, + UPDATE_REFS_DIE_ON_ERR); + + strbuf_release(&buf); +} + +static combine_notes_fn parse_combine_notes_fn(const char *v) +{ + if (!strcasecmp(v, "overwrite")) + return combine_notes_overwrite; + else if (!strcasecmp(v, "ignore")) + return combine_notes_ignore; + else if (!strcasecmp(v, "concatenate")) + return combine_notes_concatenate; + else if (!strcasecmp(v, "cat_sort_uniq")) + return combine_notes_cat_sort_uniq; + else + return NULL; +} + +static int notes_rewrite_config(const char *k, const char *v, void *cb) +{ + struct notes_rewrite_cfg *c = cb; + if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) { + c->enabled = git_config_bool(k, v); + return 0; + } else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) { + if (!v) + return config_error_nonbool(k); + c->combine = parse_combine_notes_fn(v); + if (!c->combine) { + error(_("Bad notes.rewriteMode value: '%s'"), v); + return 1; + } + return 0; + } else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) { + /* note that a refs/ prefix is implied in the + * underlying for_each_glob_ref */ + if (starts_with(v, "refs/notes/")) + string_list_add_refs_by_glob(c->refs, v); + else + warning(_("Refusing to rewrite notes in %s" + " (outside of refs/notes/)"), v); + return 0; + } + + return 0; +} + + +struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd) +{ + struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg)); + const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT); + const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT); + c->cmd = cmd; + c->enabled = 1; + c->combine = combine_notes_concatenate; + c->refs = xcalloc(1, sizeof(struct string_list)); + c->refs->strdup_strings = 1; + c->refs_from_env = 0; + c->mode_from_env = 0; + if (rewrite_mode_env) { + c->mode_from_env = 1; + c->combine = parse_combine_notes_fn(rewrite_mode_env); + if (!c->combine) + /* TRANSLATORS: The first %s is the name of the + environment variable, the second %s is its value */ + error(_("Bad %s value: '%s'"), GIT_NOTES_REWRITE_MODE_ENVIRONMENT, + rewrite_mode_env); + } + if (rewrite_refs_env) { + c->refs_from_env = 1; + string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env); + } + git_config(notes_rewrite_config, c); + if (!c->enabled || !c->refs->nr) { + string_list_clear(c->refs, 0); + free(c->refs); + free(c); + return NULL; + } + c->trees = load_notes_trees(c->refs); + string_list_clear(c->refs, 0); + free(c->refs); + return c; +} + +int copy_note_for_rewrite(struct notes_rewrite_cfg *c, + const unsigned char *from_obj, const unsigned char *to_obj) +{ + int ret = 0; + int i; + for (i = 0; c->trees[i]; i++) + ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret; + return ret; +} + +void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c, const char *msg) +{ + int i; + for (i = 0; c->trees[i]; i++) { + commit_notes(c->trees[i], msg); + free_notes(c->trees[i]); + } + free(c->trees); + free(c); +} |