diff options
Diffstat (limited to 'builtin/read-tree.c')
| -rw-r--r-- | builtin/read-tree.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/builtin/read-tree.c b/builtin/read-tree.c index 8bdcab1..df6c4c8 100644 --- a/builtin/read-tree.c +++ b/builtin/read-tree.c @@ -16,6 +16,7 @@ #include "resolve-undo.h" static int nr_trees; +static int read_empty; static struct tree *trees[MAX_UNPACK_TREES]; static int list_tree(unsigned char *sha1) @@ -32,7 +33,7 @@ static int list_tree(unsigned char *sha1) } static const char * const read_tree_usage[] = { - "git read-tree [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>] [-u [--exclude-per-directory=<gitignore>] | -i]] [--no-sparse-checkout] [--index-output=<file>] <tree-ish1> [<tree-ish2> [<tree-ish3>]]", + "git read-tree [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>] [-u [--exclude-per-directory=<gitignore>] | -i]] [--no-sparse-checkout] [--index-output=<file>] (--empty | <tree-ish1> [<tree-ish2> [<tree-ish3>]])", NULL }; @@ -103,10 +104,12 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix) struct unpack_trees_options opts; int prefix_set = 0; const struct option read_tree_options[] = { - { OPTION_CALLBACK, 0, "index-output", NULL, "FILE", - "write resulting index to <FILE>", + { OPTION_CALLBACK, 0, "index-output", NULL, "file", + "write resulting index to <file>", PARSE_OPT_NONEG, index_output_cb }, - OPT__VERBOSE(&opts.verbose_update), + OPT_SET_INT(0, "empty", &read_empty, + "only empty the index", 1), + OPT__VERBOSE(&opts.verbose_update, "be verbose"), OPT_GROUP("Merging"), OPT_SET_INT('m', NULL, &opts.merge, "perform a merge in addition to a read", 1), @@ -127,6 +130,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix) PARSE_OPT_NONEG, exclude_per_directory_cb }, OPT_SET_INT('i', NULL, &opts.index_only, "don't check the working tree after merging", 1), + OPT__DRY_RUN(&opts.dry_run, "don't update the index or the work tree"), OPT_SET_INT(0, "no-sparse-checkout", &opts.skip_sparse_checkout, "skip applying sparse checkout filter", 1), OPT_SET_INT(0, "debug-unpack", &opts.debug_unpack, @@ -166,6 +170,11 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix) die("failed to unpack tree object %s", arg); stage++; } + if (nr_trees == 0 && !read_empty) + warning("read-tree: emptying the index with no arguments is deprecated; use --empty"); + else if (nr_trees > 0 && read_empty) + die("passing trees as arguments contradicts --empty"); + if (1 < opts.index_only + opts.update) die("-u and -i at the same time makes no sense"); if ((opts.update||opts.index_only) && !opts.merge) @@ -211,7 +220,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix) if (unpack_trees(nr_trees, t, &opts)) return 128; - if (opts.debug_unpack) + if (opts.debug_unpack || opts.dry_run) return 0; /* do not write the index out */ /* @@ -219,14 +228,9 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix) * "-m ent" or "--reset ent" form), we can obtain a fully * valid cache-tree because the index must match exactly * what came from the tree. - * - * The same holds true if we are switching between two trees - * using read-tree -m A B. The index must match B after that. */ if (nr_trees == 1 && !opts.prefix) prime_cache_tree(&active_cache_tree, trees[0]); - else if (nr_trees == 2 && opts.merge) - prime_cache_tree(&active_cache_tree, trees[1]); if (write_cache(newfd, active_cache, active_nr) || commit_locked_index(&lock_file)) |