git

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/*
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 * GIT - The information manager from hell
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 *
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 * Copyright (C) Linus Torvalds, 2005
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 */
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#include "builtin.h"
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#include "config.h"
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#include "environment.h"
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#include "gettext.h"
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#include "hex.h"
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#include "tree.h"
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#include "cache-tree.h"
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#include "parse-options.h"
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#include "repository.h"
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static const char * const write_tree_usage[] = {
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	N_("git write-tree [--missing-ok] [--prefix=<prefix>/]"),
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	NULL
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};
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int cmd_write_tree(int argc, const char **argv, const char *cmd_prefix)
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{
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	int flags = 0, ret;
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	const char *tree_prefix = NULL;
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	struct object_id oid;
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	const char *me = "git-write-tree";
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	struct option write_tree_options[] = {
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		OPT_BIT(0, "missing-ok", &flags, N_("allow missing objects"),
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			WRITE_TREE_MISSING_OK),
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		OPT_STRING(0, "prefix", &tree_prefix, N_("<prefix>/"),
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			   N_("write tree object for a subdirectory <prefix>")),
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		{ OPTION_BIT, 0, "ignore-cache-tree", &flags, NULL,
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		  N_("only useful for debugging"),
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		  PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, NULL,
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		  WRITE_TREE_IGNORE_CACHE_TREE },
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		OPT_END()
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	};
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	git_config(git_default_config, NULL);
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	argc = parse_options(argc, argv, cmd_prefix, write_tree_options,
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			     write_tree_usage, 0);
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	prepare_repo_settings(the_repository);
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	the_repository->settings.command_requires_full_index = 0;
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	ret = write_index_as_tree(&oid, the_repository->index, get_index_file(),
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				  flags, tree_prefix);
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	switch (ret) {
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	case 0:
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		printf("%s\n", oid_to_hex(&oid));
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		break;
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	case WRITE_TREE_UNREADABLE_INDEX:
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		die("%s: error reading the index", me);
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		break;
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	case WRITE_TREE_UNMERGED_INDEX:
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		die("%s: error building trees", me);
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		break;
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	case WRITE_TREE_PREFIX_ERROR:
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		die("%s: prefix %s not found", me, tree_prefix);
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		break;
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	}
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	return ret;
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}
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