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![John Keeping](/assets/img/avatar_default.png)
If we carry on after outputting config_error_nonbool then we're guaranteed to dereference a null pointer. Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "refs.h"
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#include "notes-utils.h"
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void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
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const struct strbuf *msg, unsigned char *result_sha1)
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{
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unsigned char tree_sha1[20];
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assert(t->initialized);
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if (write_notes_tree(t, tree_sha1))
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die("Failed to write notes tree to database");
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if (!parents) {
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/* Deduce parent commit from t->ref */
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unsigned char parent_sha1[20];
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if (!read_ref(t->ref, parent_sha1)) {
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struct commit *parent = lookup_commit(parent_sha1);
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if (parse_commit(parent))
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die("Failed to find/parse commit %s", t->ref);
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commit_list_insert(parent, &parents);
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}
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/* else: t->ref points to nothing, assume root/orphan commit */
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}
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if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL, NULL))
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die("Failed to commit notes tree to database");
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}
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void commit_notes(struct notes_tree *t, const char *msg)
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{
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struct strbuf buf = STRBUF_INIT;
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unsigned char commit_sha1[20];
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if (!t)
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t = &default_notes_tree;
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if (!t->initialized || !t->ref || !*t->ref)
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die(_("Cannot commit uninitialized/unreferenced notes tree"));
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if (!t->dirty)
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return; /* don't have to commit an unchanged tree */
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/* Prepare commit message and reflog message */
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strbuf_addstr(&buf, msg);
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if (buf.buf[buf.len - 1] != '\n')
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strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */
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create_notes_commit(t, NULL, &buf, commit_sha1);
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strbuf_insert(&buf, 0, "notes: ", 7); /* commit message starts at index 7 */
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update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR);
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strbuf_release(&buf);
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}
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static combine_notes_fn parse_combine_notes_fn(const char *v)
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{
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if (!strcasecmp(v, "overwrite"))
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return combine_notes_overwrite;
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else if (!strcasecmp(v, "ignore"))
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return combine_notes_ignore;
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else if (!strcasecmp(v, "concatenate"))
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return combine_notes_concatenate;
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else if (!strcasecmp(v, "cat_sort_uniq"))
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return combine_notes_cat_sort_uniq;
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else
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return NULL;
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}
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static int notes_rewrite_config(const char *k, const char *v, void *cb)
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{
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struct notes_rewrite_cfg *c = cb;
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if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
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c->enabled = git_config_bool(k, v);
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return 0;
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} else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
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if (!v)
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return config_error_nonbool(k);
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c->combine = parse_combine_notes_fn(v);
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if (!c->combine) {
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error(_("Bad notes.rewriteMode value: '%s'"), v);
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return 1;
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}
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return 0;
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} else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
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/* note that a refs/ prefix is implied in the
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* underlying for_each_glob_ref */
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if (starts_with(v, "refs/notes/"))
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string_list_add_refs_by_glob(c->refs, v);
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else
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warning(_("Refusing to rewrite notes in %s"
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" (outside of refs/notes/)"), v);
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return 0;
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}
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return 0;
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}
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struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
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{
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struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg));
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const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT);
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const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT);
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c->cmd = cmd;
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c->enabled = 1;
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c->combine = combine_notes_concatenate;
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c->refs = xcalloc(1, sizeof(struct string_list));
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c->refs->strdup_strings = 1;
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c->refs_from_env = 0;
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c->mode_from_env = 0;
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if (rewrite_mode_env) {
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c->mode_from_env = 1;
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c->combine = parse_combine_notes_fn(rewrite_mode_env);
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if (!c->combine)
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/* TRANSLATORS: The first %s is the name of the
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environment variable, the second %s is its value */
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error(_("Bad %s value: '%s'"), GIT_NOTES_REWRITE_MODE_ENVIRONMENT,
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rewrite_mode_env);
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}
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if (rewrite_refs_env) {
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c->refs_from_env = 1;
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string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
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}
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git_config(notes_rewrite_config, c);
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if (!c->enabled || !c->refs->nr) {
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string_list_clear(c->refs, 0);
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free(c->refs);
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free(c);
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return NULL;
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}
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c->trees = load_notes_trees(c->refs);
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string_list_clear(c->refs, 0);
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free(c->refs);
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return c;
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}
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int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
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const unsigned char *from_obj, const unsigned char *to_obj)
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{
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int ret = 0;
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int i;
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for (i = 0; c->trees[i]; i++)
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ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret;
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return ret;
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}
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void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c, const char *msg)
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{
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int i;
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for (i = 0; c->trees[i]; i++) {
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commit_notes(c->trees[i], msg);
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free_notes(c->trees[i]);
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}
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free(c->trees);
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free(c);
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}
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