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sparse-checkout: error or warn when given individual files

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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 <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren 2022-02-19 16:44:44 +00:00 committed by Junio C Hamano
parent bb8b5e9a90
commit 4ce504360b
2 changed files with 51 additions and 7 deletions
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42
builtin/sparse-checkout.c
View File

@ -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 | <patterns>)"),
N_("git sparse-checkout add [--skip-checks] (--stdin | <patterns>)"),
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 | <patterns>)"),
N_("git sparse-checkout set [--[no-]cone] [--[no-]sparse-index] [--skip-checks] (--stdin | <patterns>)"),
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);

16
t/t1091-sparse-checkout-builtin.sh
View File

@ -562,7 +562,7 @@ test_expect_success 'different sparse-checkouts with worktrees' '
'
test_expect_success 'set using filename keeps file on-disk' '
git -C repo sparse-checkout set a deep &&
git -C repo sparse-checkout set --skip-checks a deep &&
cat >expect <<-\EOF &&
/*
!/*/
@ -839,4 +839,18 @@ test_expect_success 'set from subdir in non-cone mode throws an error' '
grep "run from the toplevel directory in non-cone mode" error
'
test_expect_success 'by default, cone mode will error out when passed files' '
git -C repo sparse-checkout reapply --cone &&
test_must_fail git -C repo sparse-checkout add .gitignore 2>error &&
grep ".gitignore.*is not a directory" error
'
test_expect_success 'by default, non-cone mode will warn on individual files' '
git -C repo sparse-checkout reapply --no-cone &&
git -C repo sparse-checkout add .gitignore 2>warning &&
grep "pass a leading slash before paths.*if you want a single file" warning
'
test_done