From 4ce504360bc3b240e570281fabe00a85027532c3 Mon Sep 17 00:00:00 2001 From: Elijah Newren Date: Sat, 19 Feb 2022 16:44:44 +0000 Subject: sparse-checkout: error or warn when given individual files The set and add subcommands accept multiple positional arguments. The meaning of these arguments differs slightly in the two modes: Cone mode only accepts directories. If given a file, it would previously treat it as a directory, causing not just the file itself to be included but all sibling files as well -- likely against users' expectations. Throw an error if the specified path is a file in the index. Provide a --skip-checks argument to allow users to override (e.g. for the case when the given path IS a directory on another branch). Non-cone mode accepts general gitignore patterns. There are many reasons to avoid this mode, but one possible reason to use it instead of cone mode: to be able to select individual files within a directory. However, if a file is passed to set/add in non-cone mode, you won't be selecting a single file, you'll be selecting a file with the same name in any directory. Thus users will likely want to prefix any paths they specify with a leading '/' character; warn users if the patterns they specify exactly name a file because it means they are likely missing such a leading slash. Reviewed-by: Derrick Stolee Signed-off-by: Elijah Newren Signed-off-by: Junio C Hamano --- builtin/sparse-checkout.c | 42 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 36 insertions(+), 6 deletions(-) (limited to 'builtin/sparse-checkout.c') diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c index 3f828feb1f..38ac37d9c6 100644 --- a/builtin/sparse-checkout.c +++ b/builtin/sparse-checkout.c @@ -1,4 +1,5 @@ #include "builtin.h" +#include "cache.h" #include "config.h" #include "dir.h" #include "parse-options.h" @@ -684,8 +685,11 @@ static int modify_pattern_list(int argc, const char **argv, int use_stdin, return result; } -static void sanitize_paths(int argc, const char **argv, const char *prefix) +static void sanitize_paths(int argc, const char **argv, + const char *prefix, int skip_checks) { + int i; + if (!argc) return; @@ -694,30 +698,52 @@ static void sanitize_paths(int argc, const char **argv, const char *prefix) * The args are not pathspecs, so unfortunately we * cannot imitate how cmd_add() uses parse_pathspec(). */ - int i; int prefix_len = strlen(prefix); for (i = 0; i < argc; i++) argv[i] = prefix_path(prefix, prefix_len, argv[i]); } + if (skip_checks) + return; + if (prefix && *prefix && !core_sparse_checkout_cone) die(_("please run from the toplevel directory in non-cone mode")); + for (i = 0; i < argc; i++) { + struct cache_entry *ce; + struct index_state *index = the_repository->index; + int pos = index_name_pos(index, argv[i], strlen(argv[i])); + + if (pos < 0) + continue; + ce = index->cache[pos]; + if (S_ISSPARSEDIR(ce->ce_mode)) + continue; + + if (core_sparse_checkout_cone) + die(_("'%s' is not a directory; to treat it as a directory anyway, rerun with --skip-checks"), argv[i]); + else + warning(_("pass a leading slash before paths such as '%s' if you want a single file (see NON-CONE PROBLEMS in the git-sparse-checkout manual)."), argv[i]); + } } static char const * const builtin_sparse_checkout_add_usage[] = { - N_("git sparse-checkout add (--stdin | )"), + N_("git sparse-checkout add [--skip-checks] (--stdin | )"), NULL }; static struct sparse_checkout_add_opts { + int skip_checks; int use_stdin; } add_opts; static int sparse_checkout_add(int argc, const char **argv, const char *prefix) { static struct option builtin_sparse_checkout_add_options[] = { + OPT_BOOL_F(0, "skip-checks", &add_opts.skip_checks, + N_("skip some sanity checks on the given paths that might give false positives"), + PARSE_OPT_NONEG), OPT_BOOL(0, "stdin", &add_opts.use_stdin, N_("read patterns from standard in")), OPT_END(), @@ -733,19 +759,20 @@ static int sparse_checkout_add(int argc, const char **argv, const char *prefix) builtin_sparse_checkout_add_usage, PARSE_OPT_KEEP_UNKNOWN); - sanitize_paths(argc, argv, prefix); + sanitize_paths(argc, argv, prefix, add_opts.skip_checks); return modify_pattern_list(argc, argv, add_opts.use_stdin, ADD); } static char const * const builtin_sparse_checkout_set_usage[] = { - N_("git sparse-checkout set [--[no-]cone] [--[no-]sparse-index] (--stdin | )"), + N_("git sparse-checkout set [--[no-]cone] [--[no-]sparse-index] [--skip-checks] (--stdin | )"), NULL }; static struct sparse_checkout_set_opts { int cone_mode; int sparse_index; + int skip_checks; int use_stdin; } set_opts; @@ -759,6 +786,9 @@ static int sparse_checkout_set(int argc, const char **argv, const char *prefix) N_("initialize the sparse-checkout in cone mode")), OPT_BOOL(0, "sparse-index", &set_opts.sparse_index, N_("toggle the use of a sparse index")), + OPT_BOOL_F(0, "skip-checks", &set_opts.skip_checks, + N_("skip some sanity checks on the given paths that might give false positives"), + PARSE_OPT_NONEG), OPT_BOOL_F(0, "stdin", &set_opts.use_stdin, N_("read patterns from standard in"), PARSE_OPT_NONEG), @@ -787,7 +817,7 @@ static int sparse_checkout_set(int argc, const char **argv, const char *prefix) argv = default_patterns; argc = default_patterns_nr; } else { - sanitize_paths(argc, argv, prefix); + sanitize_paths(argc, argv, prefix, set_opts.skip_checks); } return modify_pattern_list(argc, argv, set_opts.use_stdin, REPLACE); -- cgit v1.2.3