Example #1
0
char *write_tree_from_memory(struct merge_options *o)
{
    struct cache_tree *it;
    char root_id[41];

    if (unmerged_index(o->index)) {
        int i;
        fprintf(stderr, "BUG: There are unmerged index entries:\n");
        for (i = 0; i < o->index->cache_nr; i++) {
            struct cache_entry *ce = o->index->cache[i];
            if (ce_stage(ce))
                fprintf(stderr, "BUG: %d %.*s", ce_stage(ce),
                        (int)ce_namelen(ce), ce->name);
        }
        g_assert(0);
    }

    /* if (!active_cache_tree) */
    it = cache_tree();

    if (cache_tree_update(it, o->index->cache, o->index->cache_nr, 
                          0, 0, commit_trees_cb) < 0) {
        g_warning("error building trees");
        cache_tree_free (&it);
        return NULL;
    }

    rawdata_to_hex(it->sha1, root_id, 20);
    cache_tree_free (&it);
    return g_strdup(root_id);
}
Example #2
0
static int is_index_unchanged(void)
{
	unsigned char head_sha1[20];
	struct commit *head_commit;

	if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL))
		return error(_("Could not resolve HEAD commit\n"));

	head_commit = lookup_commit(head_sha1);

	/*
	 * If head_commit is NULL, check_commit, called from
	 * lookup_commit, would have indicated that head_commit is not
	 * a commit object already.  parse_commit() will return failure
	 * without further complaints in such a case.  Otherwise, if
	 * the commit is invalid, parse_commit() will complain.  So
	 * there is nothing for us to say here.  Just return failure.
	 */
	if (parse_commit(head_commit))
		return -1;

	if (!active_cache_tree)
		active_cache_tree = cache_tree();

	if (!cache_tree_fully_valid(active_cache_tree))
		if (cache_tree_update(&the_index, 0))
			return error(_("Unable to update cache tree\n"));

	return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash);
}
Example #3
0
int update_main_cache_tree(int flags)
{
    if (!the_index.cache_tree)
        the_index.cache_tree = cache_tree();
    return cache_tree_update(the_index.cache_tree,
                             the_index.cache, the_index.cache_nr, flags);
}
Example #4
0
struct tree *write_tree_from_memory(struct merge_options *o)
{
	struct tree *result = NULL;

	if (unmerged_cache()) {
		int i;
		output(o, 0, "There are unmerged index entries:");
		for (i = 0; i < active_nr; i++) {
			struct cache_entry *ce = active_cache[i];
			if (ce_stage(ce))
				output(o, 0, "%d %.*s", ce_stage(ce), ce_namelen(ce), ce->name);
		}
		return NULL;
	}

	if (!active_cache_tree)
		active_cache_tree = cache_tree();

	if (!cache_tree_fully_valid(active_cache_tree) &&
	    cache_tree_update(active_cache_tree,
			      active_cache, active_nr, 0, 0) < 0)
		die("error building trees");

	result = lookup_tree(active_cache_tree->sha1);

	return result;
}
struct tree *write_tree_from_memory(struct merge_options *o)
{
	struct tree *result = NULL;

	if (unmerged_cache()) {
		int i;
		fprintf(stderr, "BUG: There are unmerged index entries:\n");
		for (i = 0; i < active_nr; i++) {
			struct cache_entry *ce = active_cache[i];
			if (ce_stage(ce))
				fprintf(stderr, "BUG: %d %.*s", ce_stage(ce),
					(int)ce_namelen(ce), ce->name);
		}
		die("Bug in merge-recursive.c");
	}

	if (!active_cache_tree)
		active_cache_tree = cache_tree();

	if (!cache_tree_fully_valid(active_cache_tree) &&
	    cache_tree_update(active_cache_tree,
			      active_cache, active_nr, 0, 0) < 0)
		die("error building trees");

	result = lookup_tree(active_cache_tree->sha1);

	return result;
}
Example #6
0
int update_main_cache_tree(int flags)
{
	if (!the_index.cache_tree)
		the_index.cache_tree = cache_tree();
	return cache_tree_update(the_index.cache_tree,
				 (const struct cache_entry * const *)the_index.cache,
				 the_index.cache_nr, flags);
}
Example #7
0
int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
{
	int entries, was_valid, newfd;
	struct lock_file *lock_file;

	/*
	 * We can't free this memory, it becomes part of a linked list
	 * parsed atexit()
	 */
	lock_file = xcalloc(1, sizeof(struct lock_file));

	newfd = hold_locked_index(lock_file, 1);

	entries = read_cache();
	if (entries < 0)
		return WRITE_TREE_UNREADABLE_INDEX;
	if (flags & WRITE_TREE_IGNORE_CACHE_TREE)
		cache_tree_free(&(active_cache_tree));

	if (!active_cache_tree)
		active_cache_tree = cache_tree();

	was_valid = cache_tree_fully_valid(active_cache_tree);
	if (!was_valid) {
		int missing_ok = flags & WRITE_TREE_MISSING_OK;

		if (cache_tree_update(active_cache_tree,
				      active_cache, active_nr,
				      missing_ok, 0) < 0)
			return WRITE_TREE_UNMERGED_INDEX;
		if (0 <= newfd) {
			if (!write_cache(newfd, active_cache, active_nr) &&
			    !commit_lock_file(lock_file))
				newfd = -1;
		}
		/* Not being able to write is fine -- we are only interested
		 * in updating the cache-tree part, and if the next caller
		 * ends up using the old index with unupdated cache-tree part
		 * it misses the work we did here, but that is just a
		 * performance penalty and not a big deal.
		 */
	}

	if (prefix) {
		struct cache_tree *subtree =
			cache_tree_find(active_cache_tree, prefix);
		if (!subtree)
			return WRITE_TREE_PREFIX_ERROR;
		hashcpy(sha1, subtree->sha1);
	}
	else
		hashcpy(sha1, active_cache_tree->sha1);

	if (0 <= newfd)
		rollback_lock_file(lock_file);

	return 0;
}
Example #8
0
File: cache-tree.c Project: 9b/git
int write_index_as_tree(unsigned char *sha1, struct index_state *index_state, const char *index_path, int flags, const char *prefix)
{
	int entries, was_valid, newfd;
	struct lock_file *lock_file;

	/*
	 * We can't free this memory, it becomes part of a linked list
	 * parsed atexit()
	 */
	lock_file = xcalloc(1, sizeof(struct lock_file));

	newfd = hold_lock_file_for_update(lock_file, index_path, LOCK_DIE_ON_ERROR);

	entries = read_index_from(index_state, index_path);
	if (entries < 0)
		return WRITE_TREE_UNREADABLE_INDEX;
	if (flags & WRITE_TREE_IGNORE_CACHE_TREE)
		cache_tree_free(&index_state->cache_tree);

	if (!index_state->cache_tree)
		index_state->cache_tree = cache_tree();

	was_valid = cache_tree_fully_valid(index_state->cache_tree);
	if (!was_valid) {
		if (cache_tree_update(index_state, flags) < 0)
			return WRITE_TREE_UNMERGED_INDEX;
		if (0 <= newfd) {
			if (!write_locked_index(index_state, lock_file, COMMIT_LOCK))
				newfd = -1;
		}
		/* Not being able to write is fine -- we are only interested
		 * in updating the cache-tree part, and if the next caller
		 * ends up using the old index with unupdated cache-tree part
		 * it misses the work we did here, but that is just a
		 * performance penalty and not a big deal.
		 */
	}

	if (prefix) {
		struct cache_tree *subtree;
		subtree = cache_tree_find(index_state->cache_tree, prefix);
		if (!subtree)
			return WRITE_TREE_PREFIX_ERROR;
		hashcpy(sha1, subtree->sha1);
	}
	else
		hashcpy(sha1, index_state->cache_tree->sha1);

	if (0 <= newfd)
		rollback_lock_file(lock_file);

	return 0;
}
Example #9
0
int write_index_as_tree(struct object_id *oid, struct index_state *index_state, const char *index_path, int flags, const char *prefix)
{
	int entries, was_valid;
	struct lock_file lock_file = LOCK_INIT;
	int ret = 0;

	hold_lock_file_for_update(&lock_file, index_path, LOCK_DIE_ON_ERROR);

	entries = read_index_from(index_state, index_path, get_git_dir());
	if (entries < 0) {
		ret = WRITE_TREE_UNREADABLE_INDEX;
		goto out;
	}
	if (flags & WRITE_TREE_IGNORE_CACHE_TREE)
		cache_tree_free(&index_state->cache_tree);

	if (!index_state->cache_tree)
		index_state->cache_tree = cache_tree();

	was_valid = cache_tree_fully_valid(index_state->cache_tree);
	if (!was_valid) {
		if (cache_tree_update(index_state, flags) < 0) {
			ret = WRITE_TREE_UNMERGED_INDEX;
			goto out;
		}
		write_locked_index(index_state, &lock_file, COMMIT_LOCK);
		/* Not being able to write is fine -- we are only interested
		 * in updating the cache-tree part, and if the next caller
		 * ends up using the old index with unupdated cache-tree part
		 * it misses the work we did here, but that is just a
		 * performance penalty and not a big deal.
		 */
	}

	if (prefix) {
		struct cache_tree *subtree;
		subtree = cache_tree_find(index_state->cache_tree, prefix);
		if (!subtree) {
			ret = WRITE_TREE_PREFIX_ERROR;
			goto out;
		}
		oidcpy(oid, &subtree->oid);
	}
	else
		oidcpy(oid, &index_state->cache_tree->oid);

out:
	rollback_lock_file(&lock_file);
	return ret;
}
Example #10
0
/*
 * N-way merge "len" trees.  Returns 0 on success, -1 on failure to manipulate the
 * resulting index, -2 on failure to reflect the changes to the work tree.
 *
 * CE_ADDED, CE_UNPACKED and CE_NEW_SKIP_WORKTREE are used internally
 */
int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options *o)
{
	int i, ret;
	static struct cache_entry *dfc;
	struct exclude_list el;

	if (len > MAX_UNPACK_TREES)
		die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES);
	memset(&state, 0, sizeof(state));
	state.base_dir = "";
	state.force = 1;
	state.quiet = 1;
	state.refresh_cache = 1;
	state.istate = &o->result;

	memset(&el, 0, sizeof(el));
	if (!core_apply_sparse_checkout || !o->update)
		o->skip_sparse_checkout = 1;
	if (!o->skip_sparse_checkout) {
		char *sparse = git_pathdup("info/sparse-checkout");
		if (add_excludes_from_file_to_list(sparse, "", 0, &el, 0) < 0)
			o->skip_sparse_checkout = 1;
		else
			o->el = &el;
		free(sparse);
	}

	memset(&o->result, 0, sizeof(o->result));
	o->result.initialized = 1;
	o->result.timestamp.sec = o->src_index->timestamp.sec;
	o->result.timestamp.nsec = o->src_index->timestamp.nsec;
	o->result.version = o->src_index->version;
	o->result.split_index = o->src_index->split_index;
	if (o->result.split_index)
		o->result.split_index->refcount++;
	hashcpy(o->result.sha1, o->src_index->sha1);
	o->merge_size = len;
	mark_all_ce_unused(o->src_index);

	/*
	 * Sparse checkout loop #1: set NEW_SKIP_WORKTREE on existing entries
	 */
	if (!o->skip_sparse_checkout)
		mark_new_skip_worktree(o->el, o->src_index, 0, CE_NEW_SKIP_WORKTREE);

	if (!dfc)
		dfc = xcalloc(1, cache_entry_size(0));
	o->df_conflict_entry = dfc;

	if (len) {
		const char *prefix = o->prefix ? o->prefix : "";
		struct traverse_info info;

		setup_traverse_info(&info, prefix);
		info.fn = unpack_callback;
		info.data = o;
		info.show_all_errors = o->show_all_errors;
		info.pathspec = o->pathspec;

		if (o->prefix) {
			/*
			 * Unpack existing index entries that sort before the
			 * prefix the tree is spliced into.  Note that o->merge
			 * is always true in this case.
			 */
			while (1) {
				struct cache_entry *ce = next_cache_entry(o);
				if (!ce)
					break;
				if (ce_in_traverse_path(ce, &info))
					break;
				if (unpack_index_entry(ce, o) < 0)
					goto return_failed;
			}
		}

		if (traverse_trees(len, t, &info) < 0)
			goto return_failed;
	}

	/* Any left-over entries in the index? */
	if (o->merge) {
		while (1) {
			struct cache_entry *ce = next_cache_entry(o);
			if (!ce)
				break;
			if (unpack_index_entry(ce, o) < 0)
				goto return_failed;
		}
	}
	mark_all_ce_unused(o->src_index);

	if (o->trivial_merges_only && o->nontrivial_merge) {
		ret = unpack_failed(o, "Merge requires file-level merging");
		goto done;
	}

	if (!o->skip_sparse_checkout) {
		int empty_worktree = 1;

		/*
		 * Sparse checkout loop #2: set NEW_SKIP_WORKTREE on entries not in loop #1
		 * If the will have NEW_SKIP_WORKTREE, also set CE_SKIP_WORKTREE
		 * so apply_sparse_checkout() won't attempt to remove it from worktree
		 */
		mark_new_skip_worktree(o->el, &o->result, CE_ADDED, CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);

		ret = 0;
		for (i = 0; i < o->result.cache_nr; i++) {
			struct cache_entry *ce = o->result.cache[i];

			/*
			 * Entries marked with CE_ADDED in merged_entry() do not have
			 * verify_absent() check (the check is effectively disabled
			 * because CE_NEW_SKIP_WORKTREE is set unconditionally).
			 *
			 * Do the real check now because we have had
			 * correct CE_NEW_SKIP_WORKTREE
			 */
			if (ce->ce_flags & CE_ADDED &&
			    verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) {
				if (!o->show_all_errors)
					goto return_failed;
				ret = -1;
			}

			if (apply_sparse_checkout(&o->result, ce, o)) {
				if (!o->show_all_errors)
					goto return_failed;
				ret = -1;
			}
			if (!ce_skip_worktree(ce))
				empty_worktree = 0;

		}
		if (ret < 0)
			goto return_failed;
		/*
		 * Sparse checkout is meant to narrow down checkout area
		 * but it does not make sense to narrow down to empty working
		 * tree. This is usually a mistake in sparse checkout rules.
		 * Do not allow users to do that.
		 */
		if (o->result.cache_nr && empty_worktree) {
			ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
			goto done;
		}
	}

	o->src_index = NULL;
	ret = check_updates(o) ? (-2) : 0;
	if (o->dst_index) {
		if (!ret) {
			if (!o->result.cache_tree)
				o->result.cache_tree = cache_tree();
			if (!cache_tree_fully_valid(o->result.cache_tree))
				cache_tree_update(&o->result,
						  WRITE_TREE_SILENT |
						  WRITE_TREE_REPAIR);
		}
		discard_index(o->dst_index);
		*o->dst_index = o->result;
	} else {
		discard_index(&o->result);
	}

done:
	clear_exclude_list(&el);
	return ret;

return_failed:
	if (o->show_all_errors)
		display_error_msgs(o);
	mark_all_ce_unused(o->src_index);
	ret = unpack_failed(o, NULL);
	if (o->exiting_early)
		ret = 0;
	goto done;
}
Example #11
0
static int merge_working_tree(const struct checkout_opts *opts,
			      struct branch_info *old_branch_info,
			      struct branch_info *new_branch_info,
			      int *writeout_error)
{
	int ret;
	struct lock_file lock_file = LOCK_INIT;

	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
	if (read_cache_preload(NULL) < 0)
		return error(_("index file corrupt"));

	resolve_undo_clear();
	if (opts->force) {
		ret = reset_tree(get_commit_tree(new_branch_info->commit),
				 opts, 1, writeout_error);
		if (ret)
			return ret;
	} else {
		struct tree_desc trees[2];
		struct tree *tree;
		struct unpack_trees_options topts;

		memset(&topts, 0, sizeof(topts));
		topts.head_idx = -1;
		topts.src_index = &the_index;
		topts.dst_index = &the_index;

		setup_unpack_trees_porcelain(&topts, "checkout");

		refresh_cache(REFRESH_QUIET);

		if (unmerged_cache()) {
			error(_("you need to resolve your current index first"));
			return 1;
		}

		/* 2-way merge to the new branch */
		topts.initial_checkout = is_cache_unborn();
		topts.update = 1;
		topts.merge = 1;
		topts.gently = opts->merge && old_branch_info->commit;
		topts.verbose_update = opts->show_progress;
		topts.fn = twoway_merge;
		if (opts->overwrite_ignore) {
			topts.dir = xcalloc(1, sizeof(*topts.dir));
			topts.dir->flags |= DIR_SHOW_IGNORED;
			setup_standard_excludes(topts.dir);
		}
		tree = parse_tree_indirect(old_branch_info->commit ?
					   &old_branch_info->commit->object.oid :
					   the_hash_algo->empty_tree);
		init_tree_desc(&trees[0], tree->buffer, tree->size);
		tree = parse_tree_indirect(&new_branch_info->commit->object.oid);
		init_tree_desc(&trees[1], tree->buffer, tree->size);

		ret = unpack_trees(2, trees, &topts);
		clear_unpack_trees_porcelain(&topts);
		if (ret == -1) {
			/*
			 * Unpack couldn't do a trivial merge; either
			 * give up or do a real merge, depending on
			 * whether the merge flag was used.
			 */
			struct tree *result;
			struct tree *work;
			struct merge_options o;
			if (!opts->merge)
				return 1;

			/*
			 * Without old_branch_info->commit, the below is the same as
			 * the two-tree unpack we already tried and failed.
			 */
			if (!old_branch_info->commit)
				return 1;

			/* Do more real merge */

			/*
			 * We update the index fully, then write the
			 * tree from the index, then merge the new
			 * branch with the current tree, with the old
			 * branch as the base. Then we reset the index
			 * (but not the working tree) to the new
			 * branch, leaving the working tree as the
			 * merged version, but skipping unmerged
			 * entries in the index.
			 */

			add_files_to_cache(NULL, NULL, 0);
			/*
			 * NEEDSWORK: carrying over local changes
			 * when branches have different end-of-line
			 * normalization (or clean+smudge rules) is
			 * a pain; plumb in an option to set
			 * o.renormalize?
			 */
			init_merge_options(&o, the_repository);
			o.verbosity = 0;
			work = write_tree_from_memory(&o);

			ret = reset_tree(get_commit_tree(new_branch_info->commit),
					 opts, 1,
					 writeout_error);
			if (ret)
				return ret;
			o.ancestor = old_branch_info->name;
			o.branch1 = new_branch_info->name;
			o.branch2 = "local";
			ret = merge_trees(&o,
					  get_commit_tree(new_branch_info->commit),
					  work,
					  get_commit_tree(old_branch_info->commit),
					  &result);
			if (ret < 0)
				exit(128);
			ret = reset_tree(get_commit_tree(new_branch_info->commit),
					 opts, 0,
					 writeout_error);
			strbuf_release(&o.obuf);
			if (ret)
				return ret;
		}
	}

	if (!active_cache_tree)
		active_cache_tree = cache_tree();

	if (!cache_tree_fully_valid(active_cache_tree))
		cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);

	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		die(_("unable to write new index file"));

	if (!opts->force && !opts->quiet)
		show_local_changes(&new_branch_info->commit->object, &opts->diff_options);

	return 0;
}
Example #12
0
static int prepare_to_commit(const char *index_file, const char *prefix)
{
	struct stat statbuf;
	int commitable, saved_color_setting;
	struct strbuf sb;
	char *buffer;
	FILE *fp;
	const char *hook_arg1 = NULL;
	const char *hook_arg2 = NULL;
	int ident_shown = 0;

	if (!no_verify && run_hook(index_file, "pre-commit", NULL))
		return 0;

	strbuf_init(&sb, 0);
	if (message.len) {
		strbuf_addbuf(&sb, &message);
		hook_arg1 = "message";
	} else if (logfile && !strcmp(logfile, "-")) {
		if (isatty(0))
			fprintf(stderr, "(reading log message from standard input)\n");
		if (strbuf_read(&sb, 0, 0) < 0)
			die("could not read log from standard input");
		hook_arg1 = "message";
	} else if (logfile) {
		if (strbuf_read_file(&sb, logfile, 0) < 0)
			die("could not read log file '%s': %s",
			    logfile, strerror(errno));
		hook_arg1 = "message";
	} else if (use_message) {
		buffer = strstr(use_message_buffer, "\n\n");
		if (!buffer || buffer[2] == '\0')
			die("commit has empty message");
		strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
		hook_arg1 = "commit";
		hook_arg2 = use_message;
	} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
		if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
			die("could not read MERGE_MSG: %s", strerror(errno));
		hook_arg1 = "merge";
	} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
		if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
			die("could not read SQUASH_MSG: %s", strerror(errno));
		hook_arg1 = "squash";
	} else if (template_file && !stat(template_file, &statbuf)) {
		if (strbuf_read_file(&sb, template_file, 0) < 0)
			die("could not read %s: %s",
			    template_file, strerror(errno));
		hook_arg1 = "template";
	}

	/*
	 * This final case does not modify the template message,
	 * it just sets the argument to the prepare-commit-msg hook.
	 */
	else if (in_merge)
		hook_arg1 = "merge";

	fp = fopen(git_path(commit_editmsg), "w");
	if (fp == NULL)
		die("could not open %s", git_path(commit_editmsg));

	if (cleanup_mode != CLEANUP_NONE)
		stripspace(&sb, 0);

	if (signoff) {
		struct strbuf sob;
		int i;

		strbuf_init(&sob, 0);
		strbuf_addstr(&sob, sign_off_header);
		strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
					     getenv("GIT_COMMITTER_EMAIL")));
		strbuf_addch(&sob, '\n');
		for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
			; /* do nothing */
		if (prefixcmp(sb.buf + i, sob.buf)) {
			if (prefixcmp(sb.buf + i, sign_off_header))
				strbuf_addch(&sb, '\n');
			strbuf_addbuf(&sb, &sob);
		}
		strbuf_release(&sob);
	}

	if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
		die("could not write commit template: %s", strerror(errno));

	strbuf_release(&sb);

	determine_author_info();

	/* This checks if committer ident is explicitly given */
	git_committer_info(0);
	if (use_editor) {
		char *author_ident;
		const char *committer_ident;

		if (in_merge)
			fprintf(fp,
				"#\n"
				"# It looks like you may be committing a MERGE.\n"
				"# If this is not correct, please remove the file\n"
				"#	%s\n"
				"# and try again.\n"
				"#\n",
				git_path("MERGE_HEAD"));

		fprintf(fp,
			"\n"
			"# Please enter the commit message for your changes.\n"
			"# (Comment lines starting with '#' will ");
		if (cleanup_mode == CLEANUP_ALL)
			fprintf(fp, "not be included)\n");
		else /* CLEANUP_SPACE, that is. */
			fprintf(fp, "be kept.\n"
				"# You can remove them yourself if you want to)\n");
		if (only_include_assumed)
			fprintf(fp, "# %s\n", only_include_assumed);

		author_ident = xstrdup(fmt_name(author_name, author_email));
		committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
					   getenv("GIT_COMMITTER_EMAIL"));
		if (strcmp(author_ident, committer_ident))
			fprintf(fp,
				"%s"
				"# Author:    %s\n",
				ident_shown++ ? "" : "#\n",
				author_ident);
		free(author_ident);

		if (!user_ident_explicitly_given)
			fprintf(fp,
				"%s"
				"# Committer: %s\n",
				ident_shown++ ? "" : "#\n",
				committer_ident);

		if (ident_shown)
			fprintf(fp, "#\n");

		saved_color_setting = wt_status_use_color;
		wt_status_use_color = 0;
		commitable = run_status(fp, index_file, prefix, 1);
		wt_status_use_color = saved_color_setting;
	} else {
		struct rev_info rev;
		unsigned char sha1[20];
		const char *parent = "HEAD";

		if (!active_nr && read_cache() < 0)
			die("Cannot read index");

		if (amend)
			parent = "HEAD^1";

		if (get_sha1(parent, sha1))
			commitable = !!active_nr;
		else {
			init_revisions(&rev, "");
			rev.abbrev = 0;
			setup_revisions(0, NULL, &rev, parent);
			DIFF_OPT_SET(&rev.diffopt, QUIET);
			DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
			run_diff_index(&rev, 1 /* cached */);

			commitable = !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
		}
	}

	fclose(fp);

	if (!commitable && !in_merge && !allow_empty &&
	    !(amend && is_a_merge(head_sha1))) {
		run_status(stdout, index_file, prefix, 0);
		unlink(commit_editmsg);
		return 0;
	}

	/*
	 * Re-read the index as pre-commit hook could have updated it,
	 * and write it out as a tree.  We must do this before we invoke
	 * the editor and after we invoke run_status above.
	 */
	discard_cache();
	read_cache_from(index_file);
	if (!active_cache_tree)
		active_cache_tree = cache_tree();
	if (cache_tree_update(active_cache_tree,
			      active_cache, active_nr, 0, 0) < 0) {
		error("Error building trees");
		return 0;
	}

	if (run_hook(index_file, "prepare-commit-msg",
		     git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
		return 0;

	if (use_editor) {
		char index[PATH_MAX];
		const char *env[2] = { index, NULL };
		snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
		launch_editor(git_path(commit_editmsg), NULL, env);
	}

	if (!no_verify &&
	    run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
		return 0;
	}

	return 1;
}
Example #13
0
static int prepare_to_commit(const char *index_file, const char *prefix,
			     struct wt_status *s)
{
	struct stat statbuf;
	int commitable, saved_color_setting;
	struct strbuf sb = STRBUF_INIT;
	char *buffer;
	FILE *fp;
	const char *hook_arg1 = NULL;
	const char *hook_arg2 = NULL;
	int ident_shown = 0;

	if (!no_verify && run_hook(index_file, "pre-commit", NULL))
		return 0;

	if (squash_message) {
		/*
		 * Insert the proper subject line before other commit
		 * message options add their content.
		 */
		if (use_message && !strcmp(use_message, squash_message))
			strbuf_addstr(&sb, "squash! ");
		else {
			struct pretty_print_context ctx = {0};
			struct commit *c;
			c = lookup_commit_reference_by_name(squash_message);
			if (!c)
				die("could not lookup commit %s", squash_message);
			ctx.output_encoding = get_commit_output_encoding();
			format_commit_message(c, "squash! %s\n\n", &sb,
					      &ctx);
		}
	}

	if (message.len) {
		strbuf_addbuf(&sb, &message);
		hook_arg1 = "message";
	} else if (logfile && !strcmp(logfile, "-")) {
		if (isatty(0))
			fprintf(stderr, "(reading log message from standard input)\n");
		if (strbuf_read(&sb, 0, 0) < 0)
			die_errno("could not read log from standard input");
		hook_arg1 = "message";
	} else if (logfile) {
		if (strbuf_read_file(&sb, logfile, 0) < 0)
			die_errno("could not read log file '%s'",
				  logfile);
		hook_arg1 = "message";
	} else if (use_message) {
		buffer = strstr(use_message_buffer, "\n\n");
		if (!buffer || buffer[2] == '\0')
			die("commit has empty message");
		strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
		hook_arg1 = "commit";
		hook_arg2 = use_message;
	} else if (fixup_message) {
		struct pretty_print_context ctx = {0};
		struct commit *commit;
		commit = lookup_commit_reference_by_name(fixup_message);
		if (!commit)
			die("could not lookup commit %s", fixup_message);
		ctx.output_encoding = get_commit_output_encoding();
		format_commit_message(commit, "fixup! %s\n\n",
				      &sb, &ctx);
		hook_arg1 = "message";
	} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
		if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
			die_errno("could not read MERGE_MSG");
		hook_arg1 = "merge";
	} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
		if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
			die_errno("could not read SQUASH_MSG");
		hook_arg1 = "squash";
	} else if (template_file && !stat(template_file, &statbuf)) {
		if (strbuf_read_file(&sb, template_file, 0) < 0)
			die_errno("could not read '%s'", template_file);
		hook_arg1 = "template";
	}

	/*
	 * This final case does not modify the template message,
	 * it just sets the argument to the prepare-commit-msg hook.
	 */
	else if (in_merge)
		hook_arg1 = "merge";

	if (squash_message) {
		/*
		 * If squash_commit was used for the commit subject,
		 * then we're possibly hijacking other commit log options.
		 * Reset the hook args to tell the real story.
		 */
		hook_arg1 = "message";
		hook_arg2 = "";
	}

	fp = fopen(git_path(commit_editmsg), "w");
	if (fp == NULL)
		die_errno("could not open '%s'", git_path(commit_editmsg));

	if (cleanup_mode != CLEANUP_NONE)
		stripspace(&sb, 0);

	if (signoff) {
		struct strbuf sob = STRBUF_INIT;
		int i;

		strbuf_addstr(&sob, sign_off_header);
		strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
					     getenv("GIT_COMMITTER_EMAIL")));
		strbuf_addch(&sob, '\n');
		for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
			; /* do nothing */
		if (prefixcmp(sb.buf + i, sob.buf)) {
			if (!i || !ends_rfc2822_footer(&sb))
				strbuf_addch(&sb, '\n');
			strbuf_addbuf(&sb, &sob);
		}
		strbuf_release(&sob);
	}

	if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
		die_errno("could not write commit template");

	strbuf_release(&sb);

	determine_author_info();

	/* This checks if committer ident is explicitly given */
	git_committer_info(0);
	if (use_editor && include_status) {
		char *author_ident;
		const char *committer_ident;

		if (in_merge)
			fprintf(fp,
				"#\n"
				"# It looks like you may be committing a MERGE.\n"
				"# If this is not correct, please remove the file\n"
				"#	%s\n"
				"# and try again.\n"
				"#\n",
				git_path("MERGE_HEAD"));

		fprintf(fp,
			"\n"
			"# Please enter the commit message for your changes.");
		if (cleanup_mode == CLEANUP_ALL)
			fprintf(fp,
				" Lines starting\n"
				"# with '#' will be ignored, and an empty"
				" message aborts the commit.\n");
		else /* CLEANUP_SPACE, that is. */
			fprintf(fp,
				" Lines starting\n"
				"# with '#' will be kept; you may remove them"
				" yourself if you want to.\n"
				"# An empty message aborts the commit.\n");
		if (only_include_assumed)
			fprintf(fp, "# %s\n", only_include_assumed);

		author_ident = xstrdup(fmt_name(author_name, author_email));
		committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
					   getenv("GIT_COMMITTER_EMAIL"));
		if (strcmp(author_ident, committer_ident))
			fprintf(fp,
				"%s"
				"# Author:    %s\n",
				ident_shown++ ? "" : "#\n",
				author_ident);
		free(author_ident);

		if (!user_ident_sufficiently_given())
			fprintf(fp,
				"%s"
				"# Committer: %s\n",
				ident_shown++ ? "" : "#\n",
				committer_ident);

		if (ident_shown)
			fprintf(fp, "#\n");

		saved_color_setting = s->use_color;
		s->use_color = 0;
		commitable = run_status(fp, index_file, prefix, 1, s);
		s->use_color = saved_color_setting;
	} else {
		unsigned char sha1[20];
		const char *parent = "HEAD";

		if (!active_nr && read_cache() < 0)
			die("Cannot read index");

		if (amend)
			parent = "HEAD^1";

		if (get_sha1(parent, sha1))
			commitable = !!active_nr;
		else
			commitable = index_differs_from(parent, 0);
	}

	fclose(fp);

	if (!commitable && !in_merge && !allow_empty &&
	    !(amend && is_a_merge(head_sha1))) {
		run_status(stdout, index_file, prefix, 0, s);
		if (amend)
			fputs(empty_amend_advice, stderr);
		return 0;
	}

	/*
	 * Re-read the index as pre-commit hook could have updated it,
	 * and write it out as a tree.  We must do this before we invoke
	 * the editor and after we invoke run_status above.
	 */
	discard_cache();
	read_cache_from(index_file);
	if (!active_cache_tree)
		active_cache_tree = cache_tree();
	if (cache_tree_update(active_cache_tree,
			      active_cache, active_nr, 0, 0) < 0) {
		error("Error building trees");
		return 0;
	}

	if (run_hook(index_file, "prepare-commit-msg",
		     git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
		return 0;

	if (use_editor) {
		char index[PATH_MAX];
		const char *env[2] = { NULL };
		env[0] =  index;
		snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
		if (launch_editor(git_path(commit_editmsg), NULL, env)) {
			fprintf(stderr,
			"Please supply the message using either -m or -F option.\n");
			exit(1);
		}
	}

	if (!no_verify &&
	    run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
		return 0;
	}

	return 1;
}
Example #14
0
File: commit.c Project: moy/git
static int prepare_to_commit(const char *index_file, const char *prefix,
			     struct wt_status *s,
			     struct strbuf *author_ident)
{
	struct stat statbuf;
	struct strbuf committer_ident = STRBUF_INIT;
	int commitable, saved_color_setting;
	struct strbuf sb = STRBUF_INIT;
	char *buffer;
	const char *hook_arg1 = NULL;
	const char *hook_arg2 = NULL;
	int ident_shown = 0;
	int clean_message_contents = (cleanup_mode != CLEANUP_NONE);

	if (!no_verify && run_hook(index_file, "pre-commit", NULL))
		return 0;

	if (squash_message) {
		/*
		 * Insert the proper subject line before other commit
		 * message options add their content.
		 */
		if (use_message && !strcmp(use_message, squash_message))
			strbuf_addstr(&sb, "squash! ");
		else {
			struct pretty_print_context ctx = {0};
			struct commit *c;
			c = lookup_commit_reference_by_name(squash_message);
			if (!c)
				die(_("could not lookup commit %s"), squash_message);
			ctx.output_encoding = get_commit_output_encoding();
			format_commit_message(c, "squash! %s\n\n", &sb,
					      &ctx);
		}
	}

	if (message.len) {
		strbuf_addbuf(&sb, &message);
		hook_arg1 = "message";
	} else if (logfile && !strcmp(logfile, "-")) {
		if (isatty(0))
			fprintf(stderr, _("(reading log message from standard input)\n"));
		if (strbuf_read(&sb, 0, 0) < 0)
			die_errno(_("could not read log from standard input"));
		hook_arg1 = "message";
	} else if (logfile) {
		if (strbuf_read_file(&sb, logfile, 0) < 0)
			die_errno(_("could not read log file '%s'"),
				  logfile);
		hook_arg1 = "message";
	} else if (use_message) {
		buffer = strstr(use_message_buffer, "\n\n");
		if (!buffer || buffer[2] == '\0')
			die(_("commit has empty message"));
		strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
		hook_arg1 = "commit";
		hook_arg2 = use_message;
	} else if (fixup_message) {
		struct pretty_print_context ctx = {0};
		struct commit *commit;
		commit = lookup_commit_reference_by_name(fixup_message);
		if (!commit)
			die(_("could not lookup commit %s"), fixup_message);
		ctx.output_encoding = get_commit_output_encoding();
		format_commit_message(commit, "fixup! %s\n\n",
				      &sb, &ctx);
		hook_arg1 = "message";
	} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
		if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
			die_errno(_("could not read MERGE_MSG"));
		hook_arg1 = "merge";
	} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
		if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
			die_errno(_("could not read SQUASH_MSG"));
		hook_arg1 = "squash";
	} else if (template_file) {
		if (strbuf_read_file(&sb, template_file, 0) < 0)
			die_errno(_("could not read '%s'"), template_file);
		hook_arg1 = "template";
		clean_message_contents = 0;
	}

	/*
	 * The remaining cases don't modify the template message, but
	 * just set the argument(s) to the prepare-commit-msg hook.
	 */
	else if (whence == FROM_MERGE)
		hook_arg1 = "merge";
	else if (whence == FROM_CHERRY_PICK) {
		hook_arg1 = "commit";
		hook_arg2 = "CHERRY_PICK_HEAD";
	}

	if (squash_message) {
		/*
		 * If squash_commit was used for the commit subject,
		 * then we're possibly hijacking other commit log options.
		 * Reset the hook args to tell the real story.
		 */
		hook_arg1 = "message";
		hook_arg2 = "";
	}

	s->fp = fopen(git_path(commit_editmsg), "w");
	if (s->fp == NULL)
		die_errno(_("could not open '%s'"), git_path(commit_editmsg));

	if (clean_message_contents)
		stripspace(&sb, 0);

	if (signoff) {
		struct strbuf sob = STRBUF_INIT;
		int i;

		strbuf_addstr(&sob, sign_off_header);
		strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
					     getenv("GIT_COMMITTER_EMAIL")));
		strbuf_addch(&sob, '\n');
		for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
			; /* do nothing */
		if (prefixcmp(sb.buf + i, sob.buf)) {
			if (!i || !ends_rfc2822_footer(&sb))
				strbuf_addch(&sb, '\n');
			strbuf_addbuf(&sb, &sob);
		}
		strbuf_release(&sob);
	}

	if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
		die_errno(_("could not write commit template"));

	strbuf_release(&sb);

	/* This checks and barfs if author is badly specified */
	determine_author_info(author_ident);

	/* This checks if committer ident is explicitly given */
	strbuf_addstr(&committer_ident, git_committer_info(0));
	if (use_editor && include_status) {
		char *ai_tmp, *ci_tmp;
		if (whence != FROM_COMMIT)
			status_printf_ln(s, GIT_COLOR_NORMAL,
				_("\n"
				"It looks like you may be committing a %s.\n"
				"If this is not correct, please remove the file\n"
				"	%s\n"
				"and try again.\n"
				""),
				whence_s(),
				git_path(whence == FROM_MERGE
					 ? "MERGE_HEAD"
					 : "CHERRY_PICK_HEAD"));

		fprintf(s->fp, "\n");
		status_printf(s, GIT_COLOR_NORMAL,
			_("Please enter the commit message for your changes."));
		if (cleanup_mode == CLEANUP_ALL)
			status_printf_more(s, GIT_COLOR_NORMAL,
				_(" Lines starting\n"
				"with '#' will be ignored, and an empty"
				" message aborts the commit.\n"));
		else /* CLEANUP_SPACE, that is. */
			status_printf_more(s, GIT_COLOR_NORMAL,
				_(" Lines starting\n"
				"with '#' will be kept; you may remove them"
				" yourself if you want to.\n"
				"An empty message aborts the commit.\n"));
		if (only_include_assumed)
			status_printf_ln(s, GIT_COLOR_NORMAL,
					"%s", only_include_assumed);

		ai_tmp = cut_ident_timestamp_part(author_ident->buf);
		ci_tmp = cut_ident_timestamp_part(committer_ident.buf);
		if (strcmp(author_ident->buf, committer_ident.buf))
			status_printf_ln(s, GIT_COLOR_NORMAL,
				_("%s"
				"Author:    %s"),
				ident_shown++ ? "" : "\n",
				author_ident->buf);

		if (!user_ident_sufficiently_given())
			status_printf_ln(s, GIT_COLOR_NORMAL,
				_("%s"
				"Committer: %s"),
				ident_shown++ ? "" : "\n",
				committer_ident.buf);

		if (ident_shown)
			status_printf_ln(s, GIT_COLOR_NORMAL, "");

		saved_color_setting = s->use_color;
		s->use_color = 0;
		commitable = run_status(s->fp, index_file, prefix, 1, s);
		s->use_color = saved_color_setting;

		*ai_tmp = ' ';
		*ci_tmp = ' ';
	} else {
		unsigned char sha1[20];
		const char *parent = "HEAD";

		if (!active_nr && read_cache() < 0)
			die(_("Cannot read index"));

		if (amend)
			parent = "HEAD^1";

		if (get_sha1(parent, sha1))
			commitable = !!active_nr;
		else
			commitable = index_differs_from(parent, 0);
	}
	strbuf_release(&committer_ident);

	fclose(s->fp);

	/*
	 * Reject an attempt to record a non-merge empty commit without
	 * explicit --allow-empty. In the cherry-pick case, it may be
	 * empty due to conflict resolution, which the user should okay.
	 */
	if (!commitable && whence != FROM_MERGE && !allow_empty &&
	    !(amend && is_a_merge(head_sha1))) {
		run_status(stdout, index_file, prefix, 0, s);
		if (amend)
			fputs(_(empty_amend_advice), stderr);
		else if (whence == FROM_CHERRY_PICK)
			fputs(_(empty_cherry_pick_advice), stderr);
		return 0;
	}

	/*
	 * Re-read the index as pre-commit hook could have updated it,
	 * and write it out as a tree.  We must do this before we invoke
	 * the editor and after we invoke run_status above.
	 */
	discard_cache();
	read_cache_from(index_file);
	if (!active_cache_tree)
		active_cache_tree = cache_tree();
	if (cache_tree_update(active_cache_tree,
			      active_cache, active_nr, 0, 0) < 0) {
		error(_("Error building trees"));
		return 0;
	}

	if (run_hook(index_file, "prepare-commit-msg",
		     git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
		return 0;

	if (use_editor) {
		char index[PATH_MAX];
		const char *env[2] = { NULL };
		env[0] =  index;
		snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
		if (launch_editor(git_path(commit_editmsg), NULL, env)) {
			fprintf(stderr,
			_("Please supply the message using either -m or -F option.\n"));
			exit(1);
		}
	}

	if (!no_verify &&
	    run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
		return 0;
	}

	return 1;
}