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git/builtin/add.c
Glen Choo a4e7e317f8 config: add ctx arg to config_fn_t 
Add a new "const struct config_context *ctx" arg to config_fn_t to hold
additional information about the config iteration operation.
config_context has a "struct key_value_info kvi" member that holds
metadata about the config source being read (e.g. what kind of config
source it is, the filename, etc). In this series, we're only interested
in .kvi, so we could have just used "struct key_value_info" as an arg,
but config_context makes it possible to add/adjust members in the future
without changing the config_fn_t signature. We could also consider other
ways of organizing the args (e.g. moving the config name and value into
config_context or key_value_info), but in my experiments, the
incremental benefit doesn't justify the added complexity (e.g. a
config_fn_t will sometimes invoke another config_fn_t but with a
different config value).

In subsequent commits, the .kvi member will replace the global "struct
config_reader" in config.c, making config iteration a global-free
operation. It requires much more work for the machinery to provide
meaningful values of .kvi, so for now, merely change the signature and
call sites, pass NULL as a placeholder value, and don't rely on the arg
in any meaningful way.

Most of the changes are performed by
contrib/coccinelle/config_fn_ctx.pending.cocci, which, for every
config_fn_t:

- Modifies the signature to accept "const struct config_context *ctx"
- Passes "ctx" to any inner config_fn_t, if needed
- Adds UNUSED attributes to "ctx", if needed

Most config_fn_t instances are easily identified by seeing if they are
called by the various config functions. Most of the remaining ones are
manually named in the .cocci patch. Manual cleanups are still needed,
but the majority of it is trivial; it's either adjusting config_fn_t
that the .cocci patch didn't catch, or adding forward declarations of
"struct config_context ctx" to make the signatures make sense.

The non-trivial changes are in cases where we are invoking a config_fn_t
outside of config machinery, and we now need to decide what value of
"ctx" to pass. These cases are:

- trace2/tr2_cfg.c:tr2_cfg_set_fl()

  This is indirectly called by git_config_set() so that the trace2
  machinery can notice the new config values and update its settings
  using the tr2 config parsing function, i.e. tr2_cfg_cb().

- builtin/checkout.c:checkout_main()

  This calls git_xmerge_config() as a shorthand for parsing a CLI arg.
  This might be worth refactoring away in the future, since
  git_xmerge_config() can call git_default_config(), which can do much
  more than just parsing.

Handle them by creating a KVI_INIT macro that initializes "struct
key_value_info" to a reasonable default, and use that to construct the
"ctx" arg.

Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-06-28 14:06:39 -07:00

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/*
* "git add" builtin command
*
* Copyright (C) 2006 Linus Torvalds
*/
#define USE_THE_INDEX_VARIABLE
#include "cache.h"
#include "advice.h"
#include "config.h"
#include "builtin.h"
#include "lockfile.h"
#include "editor.h"
#include "dir.h"
#include "gettext.h"
#include "pathspec.h"
#include "exec-cmd.h"
#include "cache-tree.h"
#include "run-command.h"
#include "parse-options.h"
#include "diff.h"
#include "diffcore.h"
#include "revision.h"
#include "bulk-checkin.h"
#include "strvec.h"
#include "submodule.h"
#include "add-interactive.h"
static const char * const builtin_add_usage[] = {
N_("git add [<options>] [--] <pathspec>..."),
NULL
};
static int patch_interactive, add_interactive, edit_interactive;
static int take_worktree_changes;
static int add_renormalize;
static int pathspec_file_nul;
static int include_sparse;
static const char *pathspec_from_file;
struct update_callback_data {
int flags;
int add_errors;
};
static int chmod_pathspec(struct pathspec *pathspec, char flip, int show_only)
{
int i, ret = 0;
for (i = 0; i < the_index.cache_nr; i++) {
struct cache_entry *ce = the_index.cache[i];
int err;
if (!include_sparse &&
(ce_skip_worktree(ce) ||
!path_in_sparse_checkout(ce->name, &the_index)))
continue;
if (pathspec && !ce_path_match(&the_index, ce, pathspec, NULL))
continue;
if (!show_only)
err = chmod_index_entry(&the_index, ce, flip);
else
err = S_ISREG(ce->ce_mode) ? 0 : -1;
if (err < 0)
ret = error(_("cannot chmod %cx '%s'"), flip, ce->name);
}
return ret;
}
static int fix_unmerged_status(struct diff_filepair *p,
struct update_callback_data *data)
{
if (p->status != DIFF_STATUS_UNMERGED)
return p->status;
if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
/*
* This is not an explicit add request, and the
* path is missing from the working tree (deleted)
*/
return DIFF_STATUS_DELETED;
else
/*
* Either an explicit add request, or path exists
* in the working tree. An attempt to explicitly
* add a path that does not exist in the working tree
* will be caught as an error by the caller immediately.
*/
return DIFF_STATUS_MODIFIED;
}
static void update_callback(struct diff_queue_struct *q,
struct diff_options *opt UNUSED, void *cbdata)
{
int i;
struct update_callback_data *data = cbdata;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
const char *path = p->one->path;
if (!include_sparse && !path_in_sparse_checkout(path, &the_index))
continue;
switch (fix_unmerged_status(p, data)) {
default:
die(_("unexpected diff status %c"), p->status);
case DIFF_STATUS_MODIFIED:
case DIFF_STATUS_TYPE_CHANGED:
if (add_file_to_index(&the_index, path, data->flags)) {
if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
die(_("updating files failed"));
data->add_errors++;
}
break;
case DIFF_STATUS_DELETED:
if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
break;
if (!(data->flags & ADD_CACHE_PRETEND))
remove_file_from_index(&the_index, path);
if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
printf(_("remove '%s'\n"), path);
break;
}
}
}
int add_files_to_cache(const char *prefix,
const struct pathspec *pathspec, int flags)
{
struct update_callback_data data;
struct rev_info rev;
memset(&data, 0, sizeof(data));
data.flags = flags;
repo_init_revisions(the_repository, &rev, prefix);
setup_revisions(0, NULL, &rev, NULL);
if (pathspec)
copy_pathspec(&rev.prune_data, pathspec);
rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
rev.diffopt.format_callback = update_callback;
rev.diffopt.format_callback_data = &data;
rev.diffopt.flags.override_submodule_config = 1;
rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
/*
* Use an ODB transaction to optimize adding multiple objects.
* This function is invoked from commands other than 'add', which
* may not have their own transaction active.
*/
begin_odb_transaction();
run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
end_odb_transaction();
release_revisions(&rev);
return !!data.add_errors;
}
static int renormalize_tracked_files(const struct pathspec *pathspec, int flags)
{
int i, retval = 0;
for (i = 0; i < the_index.cache_nr; i++) {
struct cache_entry *ce = the_index.cache[i];
if (!include_sparse &&
(ce_skip_worktree(ce) ||
!path_in_sparse_checkout(ce->name, &the_index)))
continue;
if (ce_stage(ce))
continue; /* do not touch unmerged paths */
if (!S_ISREG(ce->ce_mode) && !S_ISLNK(ce->ce_mode))
continue; /* do not touch non blobs */
if (pathspec && !ce_path_match(&the_index, ce, pathspec, NULL))
continue;
retval |= add_file_to_index(&the_index, ce->name,
flags | ADD_CACHE_RENORMALIZE);
}
return retval;
}
static char *prune_directory(struct dir_struct *dir, struct pathspec *pathspec, int prefix)
{
char *seen;
int i;
struct dir_entry **src, **dst;
seen = xcalloc(pathspec->nr, 1);
src = dst = dir->entries;
i = dir->nr;
while (--i >= 0) {
struct dir_entry *entry = *src++;
if (dir_path_match(&the_index, entry, pathspec, prefix, seen))
*dst++ = entry;
}
dir->nr = dst - dir->entries;
add_pathspec_matches_against_index(pathspec, &the_index, seen,
PS_IGNORE_SKIP_WORKTREE);
return seen;
}
static int refresh(int verbose, const struct pathspec *pathspec)
{
char *seen;
int i, ret = 0;
char *skip_worktree_seen = NULL;
struct string_list only_match_skip_worktree = STRING_LIST_INIT_NODUP;
int flags = REFRESH_IGNORE_SKIP_WORKTREE |
(verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET);
seen = xcalloc(pathspec->nr, 1);
refresh_index(&the_index, flags, pathspec, seen,
_("Unstaged changes after refreshing the index:"));
for (i = 0; i < pathspec->nr; i++) {
if (!seen[i]) {
const char *path = pathspec->items[i].original;
if (matches_skip_worktree(pathspec, i, &skip_worktree_seen) ||
!path_in_sparse_checkout(path, &the_index)) {
string_list_append(&only_match_skip_worktree,
pathspec->items[i].original);
} else {
die(_("pathspec '%s' did not match any files"),
pathspec->items[i].original);
}
}
}
if (only_match_skip_worktree.nr) {
advise_on_updating_sparse_paths(&only_match_skip_worktree);
ret = 1;
}
free(seen);
free(skip_worktree_seen);
string_list_clear(&only_match_skip_worktree, 0);
return ret;
}
int interactive_add(const char **argv, const char *prefix, int patch)
{
struct pathspec pathspec;
int unused;
if (!git_config_get_bool("add.interactive.usebuiltin", &unused))
warning(_("the add.interactive.useBuiltin setting has been removed!\n"
"See its entry in 'git help config' for details."));
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_FULL |
PATHSPEC_SYMLINK_LEADING_PATH |
PATHSPEC_PREFIX_ORIGIN,
prefix, argv);
if (patch)
return !!run_add_p(the_repository, ADD_P_ADD, NULL, &pathspec);
else
return !!run_add_i(the_repository, &pathspec);
}
static int edit_patch(int argc, const char **argv, const char *prefix)
{
char *file = git_pathdup("ADD_EDIT.patch");
struct child_process child = CHILD_PROCESS_INIT;
struct rev_info rev;
int out;
struct stat st;
git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
if (repo_read_index(the_repository) < 0)
die(_("Could not read the index"));
repo_init_revisions(the_repository, &rev, prefix);
rev.diffopt.context = 7;
argc = setup_revisions(argc, argv, &rev, NULL);
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
rev.diffopt.use_color = 0;
rev.diffopt.flags.ignore_dirty_submodules = 1;
out = xopen(file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
rev.diffopt.file = xfdopen(out, "w");
rev.diffopt.close_file = 1;
if (run_diff_files(&rev, 0))
die(_("Could not write patch"));
if (launch_editor(file, NULL, NULL))
die(_("editing patch failed"));
if (stat(file, &st))
die_errno(_("Could not stat '%s'"), file);
if (!st.st_size)
die(_("Empty patch. Aborted."));
child.git_cmd = 1;
strvec_pushl(&child.args, "apply", "--recount", "--cached", file,
NULL);
if (run_command(&child))
die(_("Could not apply '%s'"), file);
unlink(file);
free(file);
release_revisions(&rev);
return 0;
}
static const char ignore_error[] =
N_("The following paths are ignored by one of your .gitignore files:\n");
static int verbose, show_only, ignored_too, refresh_only;
static int ignore_add_errors, intent_to_add, ignore_missing;
static int warn_on_embedded_repo = 1;
#define ADDREMOVE_DEFAULT 1
static int addremove = ADDREMOVE_DEFAULT;
static int addremove_explicit = -1; /* unspecified */
static char *chmod_arg;
static int ignore_removal_cb(const struct option *opt, const char *arg, int unset)
{
/* if we are told to ignore, we are not adding removals */
*(int *)opt->value = !unset ? 0 : 1;
return 0;
}
static struct option builtin_add_options[] = {
OPT__DRY_RUN(&show_only, N_("dry run")),
OPT__VERBOSE(&verbose, N_("be verbose")),
OPT_GROUP(""),
OPT_BOOL('i', "interactive", &add_interactive, N_("interactive picking")),
OPT_BOOL('p', "patch", &patch_interactive, N_("select hunks interactively")),
OPT_BOOL('e', "edit", &edit_interactive, N_("edit current diff and apply")),
OPT__FORCE(&ignored_too, N_("allow adding otherwise ignored files"), 0),
OPT_BOOL('u', "update", &take_worktree_changes, N_("update tracked files")),
OPT_BOOL(0, "renormalize", &add_renormalize, N_("renormalize EOL of tracked files (implies -u)")),
OPT_BOOL('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
OPT_BOOL('A', "all", &addremove_explicit, N_("add changes from all tracked and untracked files")),
OPT_CALLBACK_F(0, "ignore-removal", &addremove_explicit,
NULL /* takes no arguments */,
N_("ignore paths removed in the working tree (same as --no-all)"),
PARSE_OPT_NOARG, ignore_removal_cb),
OPT_BOOL( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
OPT_BOOL( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
OPT_BOOL( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),
OPT_BOOL(0, "sparse", &include_sparse, N_("allow updating entries outside of the sparse-checkout cone")),
OPT_STRING(0, "chmod", &chmod_arg, "(+|-)x",
N_("override the executable bit of the listed files")),
OPT_HIDDEN_BOOL(0, "warn-embedded-repo", &warn_on_embedded_repo,
N_("warn when adding an embedded repository")),
OPT_PATHSPEC_FROM_FILE(&pathspec_from_file),
OPT_PATHSPEC_FILE_NUL(&pathspec_file_nul),
OPT_END(),
};
static int add_config(const char *var, const char *value,
const struct config_context *ctx, void *cb)
{
if (!strcmp(var, "add.ignoreerrors") ||
!strcmp(var, "add.ignore-errors")) {
ignore_add_errors = git_config_bool(var, value);
return 0;
}
if (git_color_config(var, value, cb) < 0)
return -1;
return git_default_config(var, value, ctx, cb);
}
static const char embedded_advice[] = N_(
"You've added another git repository inside your current repository.\n"
"Clones of the outer repository will not contain the contents of\n"
"the embedded repository and will not know how to obtain it.\n"
"If you meant to add a submodule, use:\n"
"\n"
" git submodule add <url> %s\n"
"\n"
"If you added this path by mistake, you can remove it from the\n"
"index with:\n"
"\n"
" git rm --cached %s\n"
"\n"
"See \"git help submodule\" for more information."
);
static void check_embedded_repo(const char *path)
{
struct strbuf name = STRBUF_INIT;
static int adviced_on_embedded_repo = 0;
if (!warn_on_embedded_repo)
return;
if (!ends_with(path, "/"))
return;
/* Drop trailing slash for aesthetics */
strbuf_addstr(&name, path);
strbuf_strip_suffix(&name, "/");
warning(_("adding embedded git repository: %s"), name.buf);
if (!adviced_on_embedded_repo &&
advice_enabled(ADVICE_ADD_EMBEDDED_REPO)) {
advise(embedded_advice, name.buf, name.buf);
adviced_on_embedded_repo = 1;
}
strbuf_release(&name);
}
static int add_files(struct dir_struct *dir, int flags)
{
int i, exit_status = 0;
struct string_list matched_sparse_paths = STRING_LIST_INIT_NODUP;
if (dir->ignored_nr) {
fprintf(stderr, _(ignore_error));
for (i = 0; i < dir->ignored_nr; i++)
fprintf(stderr, "%s\n", dir->ignored[i]->name);
if (advice_enabled(ADVICE_ADD_IGNORED_FILE))
advise(_("Use -f if you really want to add them.\n"
"Turn this message off by running\n"
"\"git config advice.addIgnoredFile false\""));
exit_status = 1;
}
for (i = 0; i < dir->nr; i++) {
if (!include_sparse &&
!path_in_sparse_checkout(dir->entries[i]->name, &the_index)) {
string_list_append(&matched_sparse_paths,
dir->entries[i]->name);
continue;
}
if (add_file_to_index(&the_index, dir->entries[i]->name, flags)) {
if (!ignore_add_errors)
die(_("adding files failed"));
exit_status = 1;
} else {
check_embedded_repo(dir->entries[i]->name);
}
}
if (matched_sparse_paths.nr) {
advise_on_updating_sparse_paths(&matched_sparse_paths);
exit_status = 1;
}
string_list_clear(&matched_sparse_paths, 0);
return exit_status;
}
int cmd_add(int argc, const char **argv, const char *prefix)
{
int exit_status = 0;
struct pathspec pathspec;
struct dir_struct dir = DIR_INIT;
int flags;
int add_new_files;
int require_pathspec;
char *seen = NULL;
struct lock_file lock_file = LOCK_INIT;
git_config(add_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_add_options,
builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
if (patch_interactive)
add_interactive = 1;
if (add_interactive) {
if (show_only)
die(_("options '%s' and '%s' cannot be used together"), "--dry-run", "--interactive/--patch");
if (pathspec_from_file)
die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--interactive/--patch");
exit(interactive_add(argv + 1, prefix, patch_interactive));
}
if (edit_interactive) {
if (pathspec_from_file)
die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--edit");
return(edit_patch(argc, argv, prefix));
}
argc--;
argv++;
if (0 <= addremove_explicit)
addremove = addremove_explicit;
else if (take_worktree_changes && ADDREMOVE_DEFAULT)
addremove = 0; /* "-u" was given but not "-A" */
if (addremove && take_worktree_changes)
die(_("options '%s' and '%s' cannot be used together"), "-A", "-u");
if (!show_only && ignore_missing)
die(_("the option '%s' requires '%s'"), "--ignore-missing", "--dry-run");
if (chmod_arg && ((chmod_arg[0] != '-' && chmod_arg[0] != '+') ||
chmod_arg[1] != 'x' || chmod_arg[2]))
die(_("--chmod param '%s' must be either -x or +x"), chmod_arg);
add_new_files = !take_worktree_changes && !refresh_only && !add_renormalize;
require_pathspec = !(take_worktree_changes || (0 < addremove_explicit));
prepare_repo_settings(the_repository);
the_repository->settings.command_requires_full_index = 0;
repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR);
/*
* Check the "pathspec '%s' did not match any files" block
* below before enabling new magic.
*/
parse_pathspec(&pathspec, PATHSPEC_ATTR,
PATHSPEC_PREFER_FULL |
PATHSPEC_SYMLINK_LEADING_PATH,
prefix, argv);
if (pathspec_from_file) {
if (pathspec.nr)
die(_("'%s' and pathspec arguments cannot be used together"), "--pathspec-from-file");
parse_pathspec_file(&pathspec, PATHSPEC_ATTR,
PATHSPEC_PREFER_FULL |
PATHSPEC_SYMLINK_LEADING_PATH,
prefix, pathspec_from_file, pathspec_file_nul);
} else if (pathspec_file_nul) {
die(_("the option '%s' requires '%s'"), "--pathspec-file-nul", "--pathspec-from-file");
}
if (require_pathspec && pathspec.nr == 0) {
fprintf(stderr, _("Nothing specified, nothing added.\n"));
if (advice_enabled(ADVICE_ADD_EMPTY_PATHSPEC))
advise( _("Maybe you wanted to say 'git add .'?\n"
"Turn this message off by running\n"
"\"git config advice.addEmptyPathspec false\""));
return 0;
}
if (!take_worktree_changes && addremove_explicit < 0 && pathspec.nr)
/* Turn "git add pathspec..." to "git add -A pathspec..." */
addremove = 1;
flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
(show_only ? ADD_CACHE_PRETEND : 0) |
(intent_to_add ? ADD_CACHE_INTENT : 0) |
(ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
(!(addremove || take_worktree_changes)
? ADD_CACHE_IGNORE_REMOVAL : 0));
if (repo_read_index_preload(the_repository, &pathspec, 0) < 0)
die(_("index file corrupt"));
die_in_unpopulated_submodule(&the_index, prefix);
die_path_inside_submodule(&the_index, &pathspec);
if (add_new_files) {
int baselen;
/* Set up the default git porcelain excludes */
if (!ignored_too) {
dir.flags |= DIR_COLLECT_IGNORED;
setup_standard_excludes(&dir);
}
/* This picks up the paths that are not tracked */
baselen = fill_directory(&dir, &the_index, &pathspec);
if (pathspec.nr)
seen = prune_directory(&dir, &pathspec, baselen);
}
if (refresh_only) {
exit_status |= refresh(verbose, &pathspec);
goto finish;
}
if (pathspec.nr) {
int i;
char *skip_worktree_seen = NULL;
struct string_list only_match_skip_worktree = STRING_LIST_INIT_NODUP;
if (!seen)
seen = find_pathspecs_matching_against_index(&pathspec,
&the_index, PS_IGNORE_SKIP_WORKTREE);
/*
* file_exists() assumes exact match
*/
GUARD_PATHSPEC(&pathspec,
PATHSPEC_FROMTOP |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE |
PATHSPEC_EXCLUDE);
for (i = 0; i < pathspec.nr; i++) {
const char *path = pathspec.items[i].match;
if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
continue;
if (seen[i])
continue;
if (!include_sparse &&
matches_skip_worktree(&pathspec, i, &skip_worktree_seen)) {
string_list_append(&only_match_skip_worktree,
pathspec.items[i].original);
continue;
}
/* Don't complain at 'git add .' on empty repo */
if (!path[0])
continue;
if ((pathspec.items[i].magic & (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
!file_exists(path)) {
if (ignore_missing) {
int dtype = DT_UNKNOWN;
if (is_excluded(&dir, &the_index, path, &dtype))
dir_add_ignored(&dir, &the_index,
path, pathspec.items[i].len);
} else
die(_("pathspec '%s' did not match any files"),
pathspec.items[i].original);
}
}
if (only_match_skip_worktree.nr) {
advise_on_updating_sparse_paths(&only_match_skip_worktree);
exit_status = 1;
}
free(seen);
free(skip_worktree_seen);
string_list_clear(&only_match_skip_worktree, 0);
}
begin_odb_transaction();
if (add_renormalize)
exit_status |= renormalize_tracked_files(&pathspec, flags);
else
exit_status |= add_files_to_cache(prefix, &pathspec, flags);
if (add_new_files)
exit_status |= add_files(&dir, flags);
if (chmod_arg && pathspec.nr)
exit_status |= chmod_pathspec(&pathspec, chmod_arg[0], show_only);
end_odb_transaction();
finish:
if (write_locked_index(&the_index, &lock_file,
COMMIT_LOCK | SKIP_IF_UNCHANGED))
die(_("Unable to write new index file"));
dir_clear(&dir);
clear_pathspec(&pathspec);
return exit_status;
}
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