RetroArch/menu/menu_entries.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2014-2015 - Jay McCarthy
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* Copyright (C) 2011-2016 - Daniel De Matteis
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*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
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#include <string.h>
#include <retro_inline.h>
#include <string/stdstring.h>
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#include "menu_driver.h"
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#include "menu_cbs.h"
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#include "menu_hash.h"
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#include "menu_navigation.h"
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#include "../general.h"
#include "../system.h"
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struct menu_list
{
file_list_t **menu_stack;
size_t menu_stack_size;
file_list_t **selection_buf;
size_t selection_buf_size;
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};
static void menu_list_free_list(file_list_t *list)
{
unsigned i;
for (i = 0; i < list->size; i++)
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{
menu_ctx_list_t list_info;
list_info.list = list;
list_info.idx = i;
list_info.list_size = list->size;
menu_driver_ctl(RARCH_MENU_CTL_LIST_FREE, &list_info);
}
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if (list)
file_list_free(list);
}
static void menu_list_free(menu_list_t *menu_list)
{
unsigned i;
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if (!menu_list)
return;
for (i = 0; i < menu_list->menu_stack_size; i++)
{
if (!menu_list->menu_stack[i])
continue;
menu_list_free_list(menu_list->menu_stack[i]);
menu_list->menu_stack[i] = NULL;
}
for (i = 0; i < menu_list->selection_buf_size; i++)
{
if (!menu_list->selection_buf[i])
continue;
menu_list_free_list(menu_list->selection_buf[i]);
menu_list->selection_buf[i] = NULL;
}
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free(menu_list->menu_stack);
free(menu_list->selection_buf);
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free(menu_list);
}
static menu_list_t *menu_list_new(void)
{
unsigned i;
menu_list_t *list = (menu_list_t*)calloc(1, sizeof(*list));
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if (!list)
return NULL;
list->menu_stack = (file_list_t**)calloc(1, sizeof(*list->menu_stack));
if (!list->menu_stack)
goto error;
list->selection_buf = (file_list_t**)calloc(1, sizeof(*list->selection_buf));
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if (!list->selection_buf)
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goto error;
list->menu_stack_size = 1;
list->selection_buf_size = 1;
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for (i = 0; i < list->menu_stack_size; i++)
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list->menu_stack[i] = (file_list_t*)calloc(1, sizeof(*list->menu_stack[i]));
for (i = 0; i < list->selection_buf_size; i++)
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list->selection_buf[i] = (file_list_t*)calloc(1, sizeof(*list->selection_buf[i]));
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return list;
error:
menu_list_free(list);
return NULL;
}
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static size_t menu_list_get_stack_size(menu_list_t *list, size_t idx)
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{
if (!list)
return 0;
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return file_list_get_size(list->menu_stack[idx]);
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}
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void menu_entries_get_at_offset(const file_list_t *list, size_t idx,
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const char **path, const char **label, unsigned *file_type,
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size_t *entry_idx, const char **alt)
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{
file_list_get_at_offset(list, idx, path, label, file_type, entry_idx);
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file_list_get_alt_at_offset(list, idx, alt);
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}
void menu_entries_get_last(const file_list_t *list,
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const char **path, const char **label,
unsigned *file_type, size_t *entry_idx)
{
if (list)
file_list_get_last(list, path, label, file_type, entry_idx);
}
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void *menu_entries_get_userdata_at_offset(const file_list_t *list, size_t idx)
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{
if (!list)
return NULL;
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return file_list_get_userdata_at_offset(list, idx);
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}
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menu_file_list_cbs_t *menu_entries_get_actiondata_at_offset(
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const file_list_t *list, size_t idx)
{
if (!list)
return NULL;
return (menu_file_list_cbs_t*)
file_list_get_actiondata_at_offset(list, idx);
}
static int menu_entries_flush_stack_type(const char *needle, const char *label,
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unsigned type, unsigned final_type)
{
return needle ? strcmp(needle, label) : (type != final_type);
}
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static bool menu_list_pop_stack(menu_list_t *list,
size_t idx, size_t *directory_ptr)
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{
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menu_ctx_list_t list_info;
bool refresh = false;
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file_list_t *menu_list = NULL;
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if (!list)
return false;
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menu_list = list->menu_stack[idx];
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if (menu_list_get_stack_size(list, idx) <= 1)
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return false;
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list_info.type = MENU_LIST_PLAIN;
list_info.action = 0;
menu_driver_ctl(RARCH_MENU_CTL_LIST_CACHE, &list_info);
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if (menu_list->size != 0)
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{
menu_ctx_list_t list_info;
list_info.list = menu_list;
list_info.idx = menu_list->size - 1;
list_info.list_size = menu_list->size - 1;
menu_driver_ctl(RARCH_MENU_CTL_LIST_FREE, &list_info);
}
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file_list_pop(menu_list, directory_ptr);
menu_driver_ctl(RARCH_MENU_CTL_LIST_SET_SELECTION, menu_list);
menu_entries_ctl(MENU_ENTRIES_CTL_SET_REFRESH, &refresh);
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return true;
}
static void menu_list_flush_stack(menu_list_t *list,
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size_t idx, const char *needle, unsigned final_type)
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{
bool refresh = false;
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const char *path = NULL;
const char *label = NULL;
unsigned type = 0;
size_t entry_idx = 0;
if (!list)
return;
menu_entries_ctl(MENU_ENTRIES_CTL_SET_REFRESH, &refresh);
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menu_entries_get_last(list->menu_stack[idx],
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&path, &label, &type, &entry_idx);
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while (menu_entries_flush_stack_type(
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needle, label, type, final_type) != 0)
{
size_t new_selection_ptr;
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menu_navigation_ctl(MENU_NAVIGATION_CTL_GET_SELECTION,
&new_selection_ptr);
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if (!menu_list_pop_stack(list, idx, &new_selection_ptr))
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break;
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menu_navigation_ctl(MENU_NAVIGATION_CTL_SET_SELECTION,
&new_selection_ptr);
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menu_entries_get_last(list->menu_stack[idx],
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&path, &label, &type, &entry_idx);
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}
}
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static bool menu_entries_clear(file_list_t *list)
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{
unsigned i;
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if (!list)
return false;
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menu_driver_ctl(RARCH_MENU_CTL_LIST_CLEAR, list);
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for (i = 0; i < list->size; i++)
file_list_free_actiondata(list, i);
if (list)
file_list_clear(list);
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return true;
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}
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void menu_entries_set_alt_at_offset(file_list_t *list, size_t idx,
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const char *alt)
{
file_list_set_alt_at_offset(list, idx, alt);
}
/**
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* menu_entries_elem_is_dir:
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* @list : File list handle.
* @offset : Offset index of element.
*
* Is the current entry at offset @offset a directory?
*
* Returns: true (1) if entry is a directory, otherwise false (0).
**/
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static bool menu_entries_elem_is_dir(file_list_t *list,
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unsigned offset)
{
unsigned type = 0;
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menu_entries_get_at_offset(list, offset, NULL, NULL, &type, NULL, NULL);
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return type == MENU_FILE_DIRECTORY;
}
/**
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* menu_entries_elem_get_first_char:
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* @list : File list handle.
* @offset : Offset index of element.
*
* Gets the first character of an element in the
* file list.
*
* Returns: first character of element in file list.
**/
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static int menu_entries_elem_get_first_char(
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file_list_t *list, unsigned offset)
{
int ret;
const char *path = NULL;
menu_entries_get_at_offset(list, offset,
NULL, NULL, NULL, NULL, &path);
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ret = tolower((int)*path);
/* "Normalize" non-alphabetical entries so they
* are lumped together for purposes of jumping. */
if (ret < 'a')
ret = 'a' - 1;
else if (ret > 'z')
ret = 'z' + 1;
return ret;
}
static void menu_entries_build_scroll_indices(file_list_t *list)
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{
int current;
bool current_is_dir;
size_t i, scroll_value = 0;
if (!list || !list->size)
return;
menu_navigation_ctl(MENU_NAVIGATION_CTL_CLEAR_SCROLL_INDICES, NULL);
menu_navigation_ctl(MENU_NAVIGATION_CTL_ADD_SCROLL_INDEX, &scroll_value);
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current = menu_entries_elem_get_first_char(list, 0);
current_is_dir = menu_entries_elem_is_dir(list, 0);
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for (i = 1; i < list->size; i++)
{
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int first = menu_entries_elem_get_first_char(list, i);
bool is_dir = menu_entries_elem_is_dir(list, i);
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if ((current_is_dir && !is_dir) || (first > current))
menu_navigation_ctl(MENU_NAVIGATION_CTL_ADD_SCROLL_INDEX, &i);
current = first;
current_is_dir = is_dir;
}
scroll_value = list->size - 1;
menu_navigation_ctl(MENU_NAVIGATION_CTL_ADD_SCROLL_INDEX, &scroll_value);
}
/**
* Before a refresh, we could have deleted a
* file on disk, causing selection_ptr to
* suddendly be out of range.
*
* Ensure it doesn't overflow.
**/
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static bool menu_entries_refresh(void *data)
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{
size_t list_size, selection;
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file_list_t *list = (file_list_t*)data;
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if (!list)
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return false;
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if (!menu_navigation_ctl(MENU_NAVIGATION_CTL_GET_SELECTION, &selection))
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return false;
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menu_entries_build_scroll_indices(list);
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list_size = menu_entries_get_size();
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if ((selection >= list_size) && list_size)
{
size_t idx = list_size - 1;
bool scroll = true;
menu_navigation_ctl(MENU_NAVIGATION_CTL_SET_SELECTION, &idx);
menu_navigation_ctl(MENU_NAVIGATION_CTL_SET, &scroll);
}
else if (!list_size)
{
bool pending_push = true;
menu_navigation_ctl(MENU_NAVIGATION_CTL_CLEAR, &pending_push);
}
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return true;
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}
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/* Returns the last index (+1) of the menu entry list. */
size_t menu_entries_get_end(void)
{
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return menu_entries_get_size();
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}
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/* Get an entry from the top of the menu stack */
void menu_entries_get(size_t i, menu_entry_t *entry)
{
const char *label = NULL;
const char *path = NULL;
const char *entry_label = NULL;
menu_file_list_cbs_t *cbs = NULL;
file_list_t *selection_buf = menu_entries_get_selection_buf_ptr(0);
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menu_entries_get_last_stack(NULL, &label, NULL, NULL);
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entry->path[0] = entry->value[0] = string_is_empty(entry->label);
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menu_entries_get_at_offset(selection_buf, i,
&path, &entry_label, &entry->type, &entry->entry_idx, NULL);
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cbs = menu_entries_get_actiondata_at_offset(selection_buf, i);
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if (cbs && cbs->action_get_value)
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cbs->action_get_value(selection_buf,
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&entry->spacing, entry->type, i, label,
entry->value, sizeof(entry->value),
entry_label, path,
entry->path, sizeof(entry->path));
entry->idx = i;
if (entry_label)
strlcpy(entry->label, entry_label, sizeof(entry->label));
}
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/* Sets title to what the name of the current menu should be. */
int menu_entries_get_title(char *s, size_t len)
{
unsigned menu_type = 0;
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const char *path = NULL;
const char *label = NULL;
menu_file_list_cbs_t *cbs = menu_entries_get_last_stack_actiondata();
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if (!cbs)
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return -1;
menu_entries_get_last_stack(&path, &label, &menu_type, NULL);
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if (cbs && cbs->action_get_title)
return cbs->action_get_title(path, label, menu_type, s, len);
return 0;
}
/* Sets 's' to the name of the current core
* (shown at the top of the UI). */
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int menu_entries_get_core_title(char *s, size_t len)
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{
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struct retro_system_info *system = NULL;
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rarch_system_info_t *info = NULL;
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settings_t *settings = config_get_ptr();
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const char *core_name = NULL;
const char *core_version = NULL;
menu_driver_ctl(RARCH_MENU_CTL_SYSTEM_INFO_GET,
&system);
core_name = system->library_name;
core_version = system->library_version;
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runloop_ctl(RUNLOOP_CTL_SYSTEM_INFO_GET, &info);
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if (!settings->menu.core_enable)
return -1;
if (string_is_empty(core_name))
core_name = info->info.library_name;
if (string_is_empty(core_name))
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core_name = menu_hash_to_str(MENU_VALUE_NO_CORE);
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if (!core_version)
core_version = info->info.library_version;
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if (!core_version)
core_version = "";
snprintf(s, len, "%s - %s %s", PACKAGE_VERSION,
core_name, core_version);
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return 0;
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}
file_list_t *menu_entries_get_menu_stack_ptr(size_t idx)
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{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
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if (!menu_list)
return NULL;
return menu_list->menu_stack[idx];
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}
file_list_t *menu_entries_get_selection_buf_ptr(size_t idx)
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{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
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if (!menu_list)
return NULL;
return menu_list->selection_buf[idx];
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}
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static bool menu_entries_init(void)
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{
if (!menu_entries_ctl(MENU_ENTRIES_CTL_LIST_INIT, NULL))
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goto error;
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if (!menu_entries_ctl(MENU_ENTRIES_CTL_SETTINGS_INIT, NULL))
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goto error;
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return true;
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error:
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_DEINIT, NULL);
menu_entries_ctl(MENU_ENTRIES_CTL_SETTINGS_DEINIT, NULL);
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return false;
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}
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void menu_entries_push(file_list_t *list, const char *path, const char *label,
unsigned type, size_t directory_ptr, size_t entry_idx)
{
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menu_ctx_list_t list_info;
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size_t idx;
menu_file_list_cbs_t *cbs = NULL;
if (!list || !label)
return;
file_list_append(list, path, label, type, directory_ptr, entry_idx);
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idx = list->size - 1;
list_info.list = list;
list_info.path = path;
list_info.label = label;
list_info.idx = idx;
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menu_driver_ctl(RARCH_MENU_CTL_LIST_INSERT, &list_info);
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file_list_free_actiondata(list, idx);
cbs = (menu_file_list_cbs_t*)
calloc(1, sizeof(menu_file_list_cbs_t));
if (!cbs)
return;
file_list_set_actiondata(list, idx, cbs);
cbs->setting = menu_setting_find(label);
menu_cbs_init(list, cbs, path, label, type, idx);
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}
menu_file_list_cbs_t *menu_entries_get_last_stack_actiondata(void)
{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
if (!menu_list)
return NULL;
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return (menu_file_list_cbs_t*)file_list_get_last_actiondata(
menu_list->menu_stack[0]);
}
void menu_entries_get_last_stack(const char **path, const char **label,
unsigned *file_type, size_t *entry_idx)
{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
if (menu_list)
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menu_entries_get_last(menu_list->menu_stack[0],
path, label, file_type, entry_idx);
}
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void menu_entries_flush_stack(const char *needle, unsigned final_type)
{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
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if (menu_list)
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menu_list_flush_stack(menu_list, 0, needle, final_type);
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}
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void menu_entries_pop_stack(size_t *ptr, size_t idx)
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{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
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if (menu_list)
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menu_list_pop_stack(menu_list, idx, ptr);
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}
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size_t menu_entries_get_stack_size(size_t idx)
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{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
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if (!menu_list)
return 0;
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return menu_list_get_stack_size(menu_list, idx);
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}
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size_t menu_entries_get_size(void)
{
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menu_list_t *menu_list = NULL;
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_GET, &menu_list);
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if (!menu_list)
return 0;
return file_list_get_size(menu_list->selection_buf[0]);
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}
rarch_setting_t *menu_entries_get_setting(uint32_t i)
{
file_list_t *selection_buf = menu_entries_get_selection_buf_ptr(0);
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menu_file_list_cbs_t *cbs =
menu_entries_get_actiondata_at_offset(selection_buf, i);
if (!cbs)
return NULL;
return cbs->setting;
}
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bool menu_entries_ctl(enum menu_entries_ctl_state state, void *data)
{
/* Flagged when menu entries need to be refreshed */
static bool menu_entries_need_refresh = false;
static bool menu_entries_nonblocking_refresh = false;
static size_t menu_entries_begin = 0;
static rarch_setting_t *menu_entries_list_settings = NULL;
static menu_list_t *menu_entries_list = NULL;
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switch (state)
{
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case MENU_ENTRIES_CTL_DEINIT:
menu_entries_ctl(MENU_ENTRIES_CTL_SETTINGS_DEINIT, NULL);
menu_entries_ctl(MENU_ENTRIES_CTL_LIST_DEINIT, NULL);
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menu_entries_need_refresh = false;
menu_entries_nonblocking_refresh = false;
menu_entries_begin = 0;
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break;
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case MENU_ENTRIES_CTL_NEEDS_REFRESH:
if (menu_entries_nonblocking_refresh)
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return false;
if (!menu_entries_need_refresh)
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return false;
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break;
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case MENU_ENTRIES_CTL_LIST_GET:
{
menu_list_t **list = (menu_list_t**)data;
if (!list)
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return false;
*list = menu_entries_list;
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}
return true;
case MENU_ENTRIES_CTL_LIST_DEINIT:
if (menu_entries_list)
menu_list_free(menu_entries_list);
menu_entries_list = NULL;
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break;
case MENU_ENTRIES_CTL_LIST_INIT:
if (!(menu_entries_list = (menu_list_t*)menu_list_new()))
return false;
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break;
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case MENU_ENTRIES_CTL_SETTINGS_GET:
{
rarch_setting_t **settings = (rarch_setting_t**)data;
if (!settings)
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return false;
*settings = menu_entries_list_settings;
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}
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break;
case MENU_ENTRIES_CTL_SETTINGS_DEINIT:
if (menu_entries_list_settings)
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menu_setting_ctl(MENU_SETTING_CTL_FREE, menu_entries_list_settings);
menu_entries_list_settings = NULL;
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break;
case MENU_ENTRIES_CTL_SETTINGS_INIT:
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menu_setting_ctl(MENU_SETTING_CTL_NEW, &menu_entries_list_settings);
if (!menu_entries_list_settings)
return false;
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break;
case MENU_ENTRIES_CTL_SET_REFRESH:
{
bool *nonblocking = (bool*)data;
if (*nonblocking)
menu_entries_nonblocking_refresh = true;
else
menu_entries_need_refresh = true;
}
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break;
case MENU_ENTRIES_CTL_UNSET_REFRESH:
{
bool *nonblocking = (bool*)data;
if (*nonblocking)
menu_entries_nonblocking_refresh = false;
else
menu_entries_need_refresh = false;
}
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break;
case MENU_ENTRIES_CTL_SET_START:
{
size_t *idx = (size_t*)data;
if (idx)
menu_entries_begin = *idx;
}
case MENU_ENTRIES_CTL_START_GET:
{
size_t *idx = (size_t*)data;
if (!idx)
return 0;
*idx = menu_entries_begin;
}
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break;
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case MENU_ENTRIES_CTL_REFRESH:
return menu_entries_refresh(data);
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case MENU_ENTRIES_CTL_CLEAR:
return menu_entries_clear((file_list_t*)data);
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case MENU_ENTRIES_CTL_INIT:
return menu_entries_init();
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case MENU_ENTRIES_CTL_SHOW_BACK:
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/* Returns true if a Back button should be shown
* (i.e. we are at least
* one level deep in the menu hierarchy). */
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return (menu_entries_get_stack_size(0) > 1);
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case MENU_ENTRIES_CTL_NONE:
default:
break;
}
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return true;
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}