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git-commit-vandalism/builtin/clean.c
Elijah Newren 7233f17577 clean: optimize and document cases where we recurse into subdirectories 
Commit 6b1db43109 ("clean: teach clean -d to preserve ignored paths",
2017-05-23) added the following code block (among others) to git-clean:
    if (remove_directories)
        dir.flags |= DIR_SHOW_IGNORED_TOO | DIR_KEEP_UNTRACKED_CONTENTS;
The reason for these flags is well documented in the commit message, but
isn't obvious just from looking at the code.  Add some explanations to
the code to make it clearer.

Further, it appears git-2.26 did not correctly handle this combination
of flags from git-clean.  With both these flags and without
DIR_SHOW_IGNORED_TOO_MODE_MATCHING set, git is supposed to recurse into
all untracked AND ignored directories.  git-2.26.0 clearly was not doing
that.  I don't know the full reasons for that or whether git < 2.27.0
had additional unknown bugs because of that misbehavior, because I don't
feel it's worth digging into.  As per the huge changes and craziness
documented in commit 8d92fb2927 ("dir: replace exponential algorithm
with a linear one", 2020-04-01), the old algorithm was a mess and was
thrown out.  What I can say is that git-2.27.0 correctly recurses into
untracked AND ignored directories with that combination.

However, in clean's case we don't need to recurse into ignored
directories; that is just a waste of time.  Thus, when git-2.27.0
started correctly handling those flags, we got a performance regression
report.  Rather than relying on other bugs in fill_directory()'s former
logic to provide the behavior of skipping ignored directories, make use
of the DIR_SHOW_IGNORED_TOO_MODE_MATCHING value specifically added in
commit eec0f7f2b7 ("status: add option to show ignored files
differently", 2017-10-30) for this purpose.

Reported-by: Brian Malehorn <bmalehorn@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-12 17:27:16 -07:00

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/*
* "git clean" builtin command
*
* Copyright (C) 2007 Shawn Bohrer
*
* Based on git-clean.sh by Pavel Roskin
*/
#define USE_THE_INDEX_COMPATIBILITY_MACROS
#include "builtin.h"
#include "cache.h"
#include "config.h"
#include "dir.h"
#include "parse-options.h"
#include "string-list.h"
#include "quote.h"
#include "column.h"
#include "color.h"
#include "pathspec.h"
#include "help.h"
#include "prompt.h"
static int force = -1; /* unset */
static int interactive;
static struct string_list del_list = STRING_LIST_INIT_DUP;
static unsigned int colopts;
static const char *const builtin_clean_usage[] = {
N_("git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
NULL
};
static const char *msg_remove = N_("Removing %s\n");
static const char *msg_would_remove = N_("Would remove %s\n");
static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
static const char *msg_warn_remove_failed = N_("failed to remove %s");
static const char *msg_warn_lstat_failed = N_("could not lstat %s\n");
enum color_clean {
CLEAN_COLOR_RESET = 0,
CLEAN_COLOR_PLAIN = 1,
CLEAN_COLOR_PROMPT = 2,
CLEAN_COLOR_HEADER = 3,
CLEAN_COLOR_HELP = 4,
CLEAN_COLOR_ERROR = 5
};
static const char *color_interactive_slots[] = {
[CLEAN_COLOR_ERROR] = "error",
[CLEAN_COLOR_HEADER] = "header",
[CLEAN_COLOR_HELP] = "help",
[CLEAN_COLOR_PLAIN] = "plain",
[CLEAN_COLOR_PROMPT] = "prompt",
[CLEAN_COLOR_RESET] = "reset",
};
static int clean_use_color = -1;
static char clean_colors[][COLOR_MAXLEN] = {
[CLEAN_COLOR_ERROR] = GIT_COLOR_BOLD_RED,
[CLEAN_COLOR_HEADER] = GIT_COLOR_BOLD,
[CLEAN_COLOR_HELP] = GIT_COLOR_BOLD_RED,
[CLEAN_COLOR_PLAIN] = GIT_COLOR_NORMAL,
[CLEAN_COLOR_PROMPT] = GIT_COLOR_BOLD_BLUE,
[CLEAN_COLOR_RESET] = GIT_COLOR_RESET,
};
#define MENU_OPTS_SINGLETON 01
#define MENU_OPTS_IMMEDIATE 02
#define MENU_OPTS_LIST_ONLY 04
struct menu_opts {
const char *header;
const char *prompt;
int flags;
};
#define MENU_RETURN_NO_LOOP 10
struct menu_item {
char hotkey;
const char *title;
int selected;
int (*fn)(void);
};
enum menu_stuff_type {
MENU_STUFF_TYPE_STRING_LIST = 1,
MENU_STUFF_TYPE_MENU_ITEM
};
struct menu_stuff {
enum menu_stuff_type type;
int nr;
void *stuff;
};
define_list_config_array(color_interactive_slots);
static int git_clean_config(const char *var, const char *value, void *cb)
{
const char *slot_name;
if (starts_with(var, "column."))
return git_column_config(var, value, "clean", &colopts);
/* honors the color.interactive* config variables which also
applied in git-add--interactive and git-stash */
if (!strcmp(var, "color.interactive")) {
clean_use_color = git_config_colorbool(var, value);
return 0;
}
if (skip_prefix(var, "color.interactive.", &slot_name)) {
int slot = LOOKUP_CONFIG(color_interactive_slots, slot_name);
if (slot < 0)
return 0;
if (!value)
return config_error_nonbool(var);
return color_parse(value, clean_colors[slot]);
}
if (!strcmp(var, "clean.requireforce")) {
force = !git_config_bool(var, value);
return 0;
}
/* inspect the color.ui config variable and others */
return git_color_default_config(var, value, cb);
}
static const char *clean_get_color(enum color_clean ix)
{
if (want_color(clean_use_color))
return clean_colors[ix];
return "";
}
static void clean_print_color(enum color_clean ix)
{
printf("%s", clean_get_color(ix));
}
static int exclude_cb(const struct option *opt, const char *arg, int unset)
{
struct string_list *exclude_list = opt->value;
BUG_ON_OPT_NEG(unset);
string_list_append(exclude_list, arg);
return 0;
}
static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
int dry_run, int quiet, int *dir_gone)
{
DIR *dir;
struct strbuf quoted = STRBUF_INIT;
struct dirent *e;
int res = 0, ret = 0, gone = 1, original_len = path->len, len;
struct string_list dels = STRING_LIST_INIT_DUP;
*dir_gone = 1;
if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
is_nonbare_repository_dir(path)) {
if (!quiet) {
quote_path_relative(path->buf, prefix, &quoted);
printf(dry_run ? _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
quoted.buf);
}
*dir_gone = 0;
goto out;
}
dir = opendir(path->buf);
if (!dir) {
/* an empty dir could be removed even if it is unreadble */
res = dry_run ? 0 : rmdir(path->buf);
if (res) {
int saved_errno = errno;
quote_path_relative(path->buf, prefix, &quoted);
errno = saved_errno;
warning_errno(_(msg_warn_remove_failed), quoted.buf);
*dir_gone = 0;
}
ret = res;
goto out;
}
strbuf_complete(path, '/');
len = path->len;
while ((e = readdir(dir)) != NULL) {
struct stat st;
if (is_dot_or_dotdot(e->d_name))
continue;
strbuf_setlen(path, len);
strbuf_addstr(path, e->d_name);
if (lstat(path->buf, &st))
warning_errno(_(msg_warn_lstat_failed), path->buf);
else if (S_ISDIR(st.st_mode)) {
if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
ret = 1;
if (gone) {
quote_path_relative(path->buf, prefix, &quoted);
string_list_append(&dels, quoted.buf);
} else
*dir_gone = 0;
continue;
} else {
res = dry_run ? 0 : unlink(path->buf);
if (!res) {
quote_path_relative(path->buf, prefix, &quoted);
string_list_append(&dels, quoted.buf);
} else {
int saved_errno = errno;
quote_path_relative(path->buf, prefix, &quoted);
errno = saved_errno;
warning_errno(_(msg_warn_remove_failed), quoted.buf);
*dir_gone = 0;
ret = 1;
}
continue;
}
/* path too long, stat fails, or non-directory still exists */
*dir_gone = 0;
ret = 1;
break;
}
closedir(dir);
strbuf_setlen(path, original_len);
if (*dir_gone) {
res = dry_run ? 0 : rmdir(path->buf);
if (!res)
*dir_gone = 1;
else {
int saved_errno = errno;
quote_path_relative(path->buf, prefix, &quoted);
errno = saved_errno;
warning_errno(_(msg_warn_remove_failed), quoted.buf);
*dir_gone = 0;
ret = 1;
}
}
if (!*dir_gone && !quiet) {
int i;
for (i = 0; i < dels.nr; i++)
printf(dry_run ? _(msg_would_remove) : _(msg_remove), dels.items[i].string);
}
out:
strbuf_release(&quoted);
string_list_clear(&dels, 0);
return ret;
}
static void pretty_print_dels(void)
{
struct string_list list = STRING_LIST_INIT_DUP;
struct string_list_item *item;
struct strbuf buf = STRBUF_INIT;
const char *qname;
struct column_options copts;
for_each_string_list_item(item, &del_list) {
qname = quote_path_relative(item->string, NULL, &buf);
string_list_append(&list, qname);
}
/*
* always enable column display, we only consult column.*
* about layout strategy and stuff
*/
colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
memset(&copts, 0, sizeof(copts));
copts.indent = " ";
copts.padding = 2;
print_columns(&list, colopts, &copts);
strbuf_release(&buf);
string_list_clear(&list, 0);
}
static void pretty_print_menus(struct string_list *menu_list)
{
unsigned int local_colopts = 0;
struct column_options copts;
local_colopts = COL_ENABLED | COL_ROW;
memset(&copts, 0, sizeof(copts));
copts.indent = " ";
copts.padding = 2;
print_columns(menu_list, local_colopts, &copts);
}
static void prompt_help_cmd(int singleton)
{
clean_print_color(CLEAN_COLOR_HELP);
printf(singleton ?
_("Prompt help:\n"
"1 - select a numbered item\n"
"foo - select item based on unique prefix\n"
" - (empty) select nothing\n") :
_("Prompt help:\n"
"1 - select a single item\n"
"3-5 - select a range of items\n"
"2-3,6-9 - select multiple ranges\n"
"foo - select item based on unique prefix\n"
"-... - unselect specified items\n"
"* - choose all items\n"
" - (empty) finish selecting\n"));
clean_print_color(CLEAN_COLOR_RESET);
}
/*
* display menu stuff with number prefix and hotkey highlight
*/
static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
{
struct string_list menu_list = STRING_LIST_INIT_DUP;
struct strbuf menu = STRBUF_INIT;
struct menu_item *menu_item;
struct string_list_item *string_list_item;
int i;
switch (stuff->type) {
default:
die("Bad type of menu_stuff when print menu");
case MENU_STUFF_TYPE_MENU_ITEM:
menu_item = (struct menu_item *)stuff->stuff;
for (i = 0; i < stuff->nr; i++, menu_item++) {
const char *p;
int highlighted = 0;
p = menu_item->title;
if ((*chosen)[i] < 0)
(*chosen)[i] = menu_item->selected ? 1 : 0;
strbuf_addf(&menu, "%s%2d: ", (*chosen)[i] ? "*" : " ", i+1);
for (; *p; p++) {
if (!highlighted && *p == menu_item->hotkey) {
strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_PROMPT));
strbuf_addch(&menu, *p);
strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_RESET));
highlighted = 1;
} else {
strbuf_addch(&menu, *p);
}
}
string_list_append(&menu_list, menu.buf);
strbuf_reset(&menu);
}
break;
case MENU_STUFF_TYPE_STRING_LIST:
i = 0;
for_each_string_list_item(string_list_item, (struct string_list *)stuff->stuff) {
if ((*chosen)[i] < 0)
(*chosen)[i] = 0;
strbuf_addf(&menu, "%s%2d: %s",
(*chosen)[i] ? "*" : " ", i+1, string_list_item->string);
string_list_append(&menu_list, menu.buf);
strbuf_reset(&menu);
i++;
}
break;
}
pretty_print_menus(&menu_list);
strbuf_release(&menu);
string_list_clear(&menu_list, 0);
}
static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
{
struct menu_item *menu_item;
struct string_list_item *string_list_item;
int i, len, found = 0;
len = strlen(choice);
switch (menu_stuff->type) {
default:
die("Bad type of menu_stuff when parse choice");
case MENU_STUFF_TYPE_MENU_ITEM:
menu_item = (struct menu_item *)menu_stuff->stuff;
for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
if (len == 1 && *choice == menu_item->hotkey) {
found = i + 1;
break;
}
if (!strncasecmp(choice, menu_item->title, len)) {
if (found) {
if (len == 1) {
/* continue for hotkey matching */
found = -1;
} else {
found = 0;
break;
}
} else {
found = i + 1;
}
}
}
break;
case MENU_STUFF_TYPE_STRING_LIST:
string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
if (!strncasecmp(choice, string_list_item->string, len)) {
if (found) {
found = 0;
break;
}
found = i + 1;
}
}
break;
}
return found;
}
/*
* Parse user input, and return choice(s) for menu (menu_stuff).
*
* Input
* (for single choice)
* 1 - select a numbered item
* foo - select item based on menu title
* - (empty) select nothing
*
* (for multiple choice)
* 1 - select a single item
* 3-5 - select a range of items
* 2-3,6-9 - select multiple ranges
* foo - select item based on menu title
* -... - unselect specified items
* * - choose all items
* - (empty) finish selecting
*
* The parse result will be saved in array **chosen, and
* return number of total selections.
*/
static int parse_choice(struct menu_stuff *menu_stuff,
int is_single,
struct strbuf input,
int **chosen)
{
struct strbuf **choice_list, **ptr;
int nr = 0;
int i;
if (is_single) {
choice_list = strbuf_split_max(&input, '\n', 0);
} else {
char *p = input.buf;
do {
if (*p == ',')
*p = ' ';
} while (*p++);
choice_list = strbuf_split_max(&input, ' ', 0);
}
for (ptr = choice_list; *ptr; ptr++) {
char *p;
int choose = 1;
int bottom = 0, top = 0;
int is_range, is_number;
strbuf_trim(*ptr);
if (!(*ptr)->len)
continue;
/* Input that begins with '-'; unchoose */
if (*(*ptr)->buf == '-') {
choose = 0;
strbuf_remove((*ptr), 0, 1);
}
is_range = 0;
is_number = 1;
for (p = (*ptr)->buf; *p; p++) {
if ('-' == *p) {
if (!is_range) {
is_range = 1;
is_number = 0;
} else {
is_number = 0;
is_range = 0;
break;
}
} else if (!isdigit(*p)) {
is_number = 0;
is_range = 0;
break;
}
}
if (is_number) {
bottom = atoi((*ptr)->buf);
top = bottom;
} else if (is_range) {
bottom = atoi((*ptr)->buf);
/* a range can be specified like 5-7 or 5- */
if (!*(strchr((*ptr)->buf, '-') + 1))
top = menu_stuff->nr;
else
top = atoi(strchr((*ptr)->buf, '-') + 1);
} else if (!strcmp((*ptr)->buf, "*")) {
bottom = 1;
top = menu_stuff->nr;
} else {
bottom = find_unique((*ptr)->buf, menu_stuff);
top = bottom;
}
if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
(is_single && bottom != top)) {
clean_print_color(CLEAN_COLOR_ERROR);
printf(_("Huh (%s)?\n"), (*ptr)->buf);
clean_print_color(CLEAN_COLOR_RESET);
continue;
}
for (i = bottom; i <= top; i++)
(*chosen)[i-1] = choose;
}
strbuf_list_free(choice_list);
for (i = 0; i < menu_stuff->nr; i++)
nr += (*chosen)[i];
return nr;
}
/*
* Implement a git-add-interactive compatible UI, which is borrowed
* from git-add--interactive.perl.
*
* Return value:
*
* - Return an array of integers
* - , and it is up to you to free the allocated memory.
* - The array ends with EOF.
* - If user pressed CTRL-D (i.e. EOF), no selection returned.
*/
static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
{
struct strbuf choice = STRBUF_INIT;
int *chosen, *result;
int nr = 0;
int eof = 0;
int i;
ALLOC_ARRAY(chosen, stuff->nr);
/* set chosen as uninitialized */
for (i = 0; i < stuff->nr; i++)
chosen[i] = -1;
for (;;) {
if (opts->header) {
printf_ln("%s%s%s",
clean_get_color(CLEAN_COLOR_HEADER),
_(opts->header),
clean_get_color(CLEAN_COLOR_RESET));
}
/* chosen will be initialized by print_highlight_menu_stuff */
print_highlight_menu_stuff(stuff, &chosen);
if (opts->flags & MENU_OPTS_LIST_ONLY)
break;
if (opts->prompt) {
printf("%s%s%s%s",
clean_get_color(CLEAN_COLOR_PROMPT),
_(opts->prompt),
opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
clean_get_color(CLEAN_COLOR_RESET));
}
if (git_read_line_interactively(&choice) == EOF) {
eof = 1;
break;
}
/* help for prompt */
if (!strcmp(choice.buf, "?")) {
prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
continue;
}
/* for a multiple-choice menu, press ENTER (empty) will return back */
if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
break;
nr = parse_choice(stuff,
opts->flags & MENU_OPTS_SINGLETON,
choice,
&chosen);
if (opts->flags & MENU_OPTS_SINGLETON) {
if (nr)
break;
} else if (opts->flags & MENU_OPTS_IMMEDIATE) {
break;
}
}
if (eof) {
result = xmalloc(sizeof(int));
*result = EOF;
} else {
int j = 0;
/*
* recalculate nr, if return back from menu directly with
* default selections.
*/
if (!nr) {
for (i = 0; i < stuff->nr; i++)
nr += chosen[i];
}
result = xcalloc(st_add(nr, 1), sizeof(int));
for (i = 0; i < stuff->nr && j < nr; i++) {
if (chosen[i])
result[j++] = i;
}
result[j] = EOF;
}
free(chosen);
strbuf_release(&choice);
return result;
}
static int clean_cmd(void)
{
return MENU_RETURN_NO_LOOP;
}
static int filter_by_patterns_cmd(void)
{
struct dir_struct dir;
struct strbuf confirm = STRBUF_INIT;
struct strbuf **ignore_list;
struct string_list_item *item;
struct pattern_list *pl;
int changed = -1, i;
for (;;) {
if (!del_list.nr)
break;
if (changed)
pretty_print_dels();
clean_print_color(CLEAN_COLOR_PROMPT);
printf(_("Input ignore patterns>> "));
clean_print_color(CLEAN_COLOR_RESET);
if (git_read_line_interactively(&confirm) == EOF)
putchar('\n');
/* quit filter_by_pattern mode if press ENTER or Ctrl-D */
if (!confirm.len)
break;
memset(&dir, 0, sizeof(dir));
pl = add_pattern_list(&dir, EXC_CMDL, "manual exclude");
ignore_list = strbuf_split_max(&confirm, ' ', 0);
for (i = 0; ignore_list[i]; i++) {
strbuf_trim(ignore_list[i]);
if (!ignore_list[i]->len)
continue;
add_pattern(ignore_list[i]->buf, "", 0, pl, -(i+1));
}
changed = 0;
for_each_string_list_item(item, &del_list) {
int dtype = DT_UNKNOWN;
if (is_excluded(&dir, &the_index, item->string, &dtype)) {
*item->string = '\0';
changed++;
}
}
if (changed) {
string_list_remove_empty_items(&del_list, 0);
} else {
clean_print_color(CLEAN_COLOR_ERROR);
printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
clean_print_color(CLEAN_COLOR_RESET);
}
strbuf_list_free(ignore_list);
clear_directory(&dir);
}
strbuf_release(&confirm);
return 0;
}
static int select_by_numbers_cmd(void)
{
struct menu_opts menu_opts;
struct menu_stuff menu_stuff;
struct string_list_item *items;
int *chosen;
int i, j;
menu_opts.header = NULL;
menu_opts.prompt = N_("Select items to delete");
menu_opts.flags = 0;
menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
menu_stuff.stuff = &del_list;
menu_stuff.nr = del_list.nr;
chosen = list_and_choose(&menu_opts, &menu_stuff);
items = del_list.items;
for (i = 0, j = 0; i < del_list.nr; i++) {
if (i < chosen[j]) {
*(items[i].string) = '\0';
} else if (i == chosen[j]) {
/* delete selected item */
j++;
continue;
} else {
/* end of chosen (chosen[j] == EOF), won't delete */
*(items[i].string) = '\0';
}
}
string_list_remove_empty_items(&del_list, 0);
free(chosen);
return 0;
}
static int ask_each_cmd(void)
{
struct strbuf confirm = STRBUF_INIT;
struct strbuf buf = STRBUF_INIT;
struct string_list_item *item;
const char *qname;
int changed = 0, eof = 0;
for_each_string_list_item(item, &del_list) {
/* Ctrl-D should stop removing files */
if (!eof) {
qname = quote_path_relative(item->string, NULL, &buf);
/* TRANSLATORS: Make sure to keep [y/N] as is */
printf(_("Remove %s [y/N]? "), qname);
if (git_read_line_interactively(&confirm) == EOF) {
putchar('\n');
eof = 1;
}
}
if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
*item->string = '\0';
changed++;
}
}
if (changed)
string_list_remove_empty_items(&del_list, 0);
strbuf_release(&buf);
strbuf_release(&confirm);
return MENU_RETURN_NO_LOOP;
}
static int quit_cmd(void)
{
string_list_clear(&del_list, 0);
printf(_("Bye.\n"));
return MENU_RETURN_NO_LOOP;
}
static int help_cmd(void)
{
clean_print_color(CLEAN_COLOR_HELP);
printf_ln(_(
"clean - start cleaning\n"
"filter by pattern - exclude items from deletion\n"
"select by numbers - select items to be deleted by numbers\n"
"ask each - confirm each deletion (like \"rm -i\")\n"
"quit - stop cleaning\n"
"help - this screen\n"
"? - help for prompt selection"
));
clean_print_color(CLEAN_COLOR_RESET);
return 0;
}
static void interactive_main_loop(void)
{
while (del_list.nr) {
struct menu_opts menu_opts;
struct menu_stuff menu_stuff;
struct menu_item menus[] = {
{'c', "clean", 0, clean_cmd},
{'f', "filter by pattern", 0, filter_by_patterns_cmd},
{'s', "select by numbers", 0, select_by_numbers_cmd},
{'a', "ask each", 0, ask_each_cmd},
{'q', "quit", 0, quit_cmd},
{'h', "help", 0, help_cmd},
};
int *chosen;
menu_opts.header = N_("*** Commands ***");
menu_opts.prompt = N_("What now");
menu_opts.flags = MENU_OPTS_SINGLETON;
menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
menu_stuff.stuff = menus;
menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
clean_print_color(CLEAN_COLOR_HEADER);
printf_ln(Q_("Would remove the following item:",
"Would remove the following items:",
del_list.nr));
clean_print_color(CLEAN_COLOR_RESET);
pretty_print_dels();
chosen = list_and_choose(&menu_opts, &menu_stuff);
if (*chosen != EOF) {
int ret;
ret = menus[*chosen].fn();
if (ret != MENU_RETURN_NO_LOOP) {
FREE_AND_NULL(chosen);
if (!del_list.nr) {
clean_print_color(CLEAN_COLOR_ERROR);
printf_ln(_("No more files to clean, exiting."));
clean_print_color(CLEAN_COLOR_RESET);
break;
}
continue;
}
} else {
quit_cmd();
}
FREE_AND_NULL(chosen);
break;
}
}
static void correct_untracked_entries(struct dir_struct *dir)
{
int src, dst, ign;
for (src = dst = ign = 0; src < dir->nr; src++) {
/* skip paths in ignored[] that cannot be inside entries[src] */
while (ign < dir->ignored_nr &&
0 <= cmp_dir_entry(&dir->entries[src], &dir->ignored[ign]))
ign++;
if (ign < dir->ignored_nr &&
check_dir_entry_contains(dir->entries[src], dir->ignored[ign])) {
/* entries[src] contains an ignored path, so we drop it */
free(dir->entries[src]);
} else {
struct dir_entry *ent = dir->entries[src++];
/* entries[src] does not contain an ignored path, so we keep it */
dir->entries[dst++] = ent;
/* then discard paths in entries[] contained inside entries[src] */
while (src < dir->nr &&
check_dir_entry_contains(ent, dir->entries[src]))
free(dir->entries[src++]);
/* compensate for the outer loop's loop control */
src--;
}
}
dir->nr = dst;
}
int cmd_clean(int argc, const char **argv, const char *prefix)
{
int i, res;
int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
struct strbuf abs_path = STRBUF_INIT;
struct dir_struct dir;
struct pathspec pathspec;
struct strbuf buf = STRBUF_INIT;
struct string_list exclude_list = STRING_LIST_INIT_NODUP;
struct pattern_list *pl;
struct string_list_item *item;
const char *qname;
struct option options[] = {
OPT__QUIET(&quiet, N_("do not print names of files removed")),
OPT__DRY_RUN(&dry_run, N_("dry run")),
OPT__FORCE(&force, N_("force"), PARSE_OPT_NOCOMPLETE),
OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
OPT_BOOL('d', NULL, &remove_directories,
N_("remove whole directories")),
OPT_CALLBACK_F('e', "exclude", &exclude_list, N_("pattern"),
N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb),
OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
OPT_BOOL('X', NULL, &ignored_only,
N_("remove only ignored files")),
OPT_END()
};
git_config(git_clean_config, NULL);
if (force < 0)
force = 0;
else
config_set = 1;
argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
0);
memset(&dir, 0, sizeof(dir));
if (!interactive && !dry_run && !force) {
if (config_set)
die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
"refusing to clean"));
else
die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
" refusing to clean"));
}
if (force > 1)
rm_flags = 0;
else
dir.flags |= DIR_SKIP_NESTED_GIT;
dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
if (ignored && ignored_only)
die(_("-x and -X cannot be used together"));
if (!ignored)
setup_standard_excludes(&dir);
if (ignored_only)
dir.flags |= DIR_SHOW_IGNORED;
if (argc) {
/*
* Remaining args implies pathspecs specified, and we should
* recurse within those.
*/
remove_directories = 1;
}
if (remove_directories && !ignored_only) {
/*
* We need to know about ignored files too:
*
* If (ignored), then we will delete ignored files as well.
*
* If (!ignored), then even though we not are doing
* anything with ignored files, we need to know about them
* so that we can avoid deleting a directory of untracked
* files that also contains an ignored file within it.
*
* For the (!ignored) case, since we only need to avoid
* deleting ignored files, we can set
* DIR_SHOW_IGNORED_TOO_MODE_MATCHING in order to avoid
* recursing into a directory which is itself ignored.
*/
dir.flags |= DIR_SHOW_IGNORED_TOO;
if (!ignored)
dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
/*
* Let the fill_directory() machinery know that we aren't
* just recursing to collect the ignored files; we want all
* the untracked ones so that we can delete them. (Note:
* we could also set DIR_KEEP_UNTRACKED_CONTENTS when
* ignored_only is true, since DIR_KEEP_UNTRACKED_CONTENTS
* only has effect in combination with DIR_SHOW_IGNORED_TOO. It makes
* the code clearer to exclude it, though.
*/
dir.flags |= DIR_KEEP_UNTRACKED_CONTENTS;
}
if (read_cache() < 0)
die(_("index file corrupt"));
pl = add_pattern_list(&dir, EXC_CMDL, "--exclude option");
for (i = 0; i < exclude_list.nr; i++)
add_pattern(exclude_list.items[i].string, "", 0, pl, -(i+1));
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_CWD,
prefix, argv);
fill_directory(&dir, &the_index, &pathspec);
correct_untracked_entries(&dir);
for (i = 0; i < dir.nr; i++) {
struct dir_entry *ent = dir.entries[i];
int matches = 0;
struct stat st;
const char *rel;
if (!cache_name_is_other(ent->name, ent->len))
continue;
if (lstat(ent->name, &st))
die_errno("Cannot lstat '%s'", ent->name);
if (S_ISDIR(st.st_mode) && !remove_directories &&
matches != MATCHED_EXACTLY)
continue;
rel = relative_path(ent->name, prefix, &buf);
string_list_append(&del_list, rel);
}
for (i = 0; i < dir.nr; i++)
free(dir.entries[i]);
for (i = 0; i < dir.ignored_nr; i++)
free(dir.ignored[i]);
if (interactive && del_list.nr > 0)
interactive_main_loop();
for_each_string_list_item(item, &del_list) {
struct stat st;
strbuf_reset(&abs_path);
if (prefix)
strbuf_addstr(&abs_path, prefix);
strbuf_addstr(&abs_path, item->string);
/*
* we might have removed this as part of earlier
* recursive directory removal, so lstat() here could
* fail with ENOENT.
*/
if (lstat(abs_path.buf, &st))
continue;
if (S_ISDIR(st.st_mode)) {
if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
errors++;
if (gone && !quiet) {
qname = quote_path_relative(item->string, NULL, &buf);
printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
}
} else {
res = dry_run ? 0 : unlink(abs_path.buf);
if (res) {
int saved_errno = errno;
qname = quote_path_relative(item->string, NULL, &buf);
errno = saved_errno;
warning_errno(_(msg_warn_remove_failed), qname);
errors++;
} else if (!quiet) {
qname = quote_path_relative(item->string, NULL, &buf);
printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
}
}
}
strbuf_release(&abs_path);
strbuf_release(&buf);
string_list_clear(&del_list, 0);
string_list_clear(&exclude_list, 0);
return (errors != 0);
}
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