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git-clean: add select by numbers interactive action 

Draw a multiple choice menu using `list_and_choose` to select items
to be deleted by numbers.

User can input:

 *  1,5-7 : select 1,5,6,7 items to be deleted
 *  *     : select all items to be deleted
 *  -*    : unselect all, nothing will be deleted
 *        : (empty) finish selecting, and return back to main menu

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Jiang Xin 2013-06-25 23:53:53 +08:00 committed by Junio C Hamano
parent d1239264f2
commit c1f1d24aa5
1 changed files with 39 additions and 0 deletions
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39
builtin/clean.c
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@ -680,6 +680,43 @@ static int filter_by_patterns_cmd(void)
return 0; 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 quit_cmd(void) static int quit_cmd(void)
{ {
string_list_clear(&del_list, 0); string_list_clear(&del_list, 0);
@ -693,6 +730,7 @@ static int help_cmd(void)
printf_ln(_( printf_ln(_(
"clean - start cleaning\n" "clean - start cleaning\n"
"filter by pattern - exclude items from deletion\n" "filter by pattern - exclude items from deletion\n"
"select by numbers - select items to be deleted by numbers\n"
"quit - stop cleaning\n" "quit - stop cleaning\n"
"help - this screen\n" "help - this screen\n"
"? - help for prompt selection" "? - help for prompt selection"
@ -709,6 +747,7 @@ static void interactive_main_loop(void)
struct menu_item menus[] = { struct menu_item menus[] = {
{'c', "clean", 0, clean_cmd}, {'c', "clean", 0, clean_cmd},
{'f', "filter by pattern", 0, filter_by_patterns_cmd}, {'f', "filter by pattern", 0, filter_by_patterns_cmd},
{'s', "select by numbers", 0, select_by_numbers_cmd},
{'q', "quit", 0, quit_cmd}, {'q', "quit", 0, quit_cmd},
{'h', "help", 0, help_cmd}, {'h', "help", 0, help_cmd},
}; };