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core_info.c
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core_info.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2016-2019 - Brad Parker
*
* 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/>.
*/
#include <compat/strl.h>
#include <string/stdstring.h>
#include <file/config_file.h>
#include <file/file_path.h>
#include <streams/file_stream.h>
#include <streams/interface_stream.h>
#include <formats/rjson.h>
#include <lists/dir_list.h>
#include <file/archive_file.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "retroarch.h"
#include "verbosity.h"
#include "core_info.h"
#include "file_path_special.h"
#if defined(__WINRT__) || defined(WINAPI_FAMILY) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
#include "uwp/uwp_func.h"
#endif
#if defined(ANDROID)
#include "play_feature_delivery/play_feature_delivery.h"
#endif
/*************************/
/* Core Info Cache START */
/*************************/
#define CORE_INFO_CACHE_VERSION "1.2"
#define CORE_INFO_CACHE_DEFAULT_CAPACITY 8
/* TODO/FIXME: Apparently rzip compression is an issue on UWP */
#if defined(HAVE_ZLIB) && !(defined(__WINRT__) || defined(WINAPI_FAMILY) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
#define CORE_INFO_CACHE_COMPRESS
#endif
typedef struct
{
core_info_t *items;
size_t length;
size_t capacity;
char *version;
bool refresh;
} core_info_cache_list_t;
typedef struct
{
core_info_t *core_info;
core_info_cache_list_t *core_info_cache_list;
char **current_string_val;
struct string_list **current_string_list_val;
uint32_t *current_entry_uint_val;
bool *current_entry_bool_val;
unsigned array_depth;
unsigned object_depth;
bool to_core_file_id;
bool to_firmware;
} CCJSONContext;
/* Forward declarations */
static void core_info_free(core_info_t* info);
static uint32_t core_info_hash_string(const char *str);
#ifdef HAVE_CORE_INFO_CACHE
static core_info_cache_list_t *core_info_cache_list_new(void);
#endif
static void core_info_cache_add(core_info_cache_list_t *list,
core_info_t *info, bool transfer);
static core_info_state_t core_info_st = {
#ifdef HAVE_COMPRESSION
NULL,
#endif
NULL,
NULL,
NULL
};
#ifdef HAVE_CORE_INFO_CACHE
/* JSON Handlers START */
static bool CCJSONObjectMemberHandler(void *context,
const char *pValue, size_t length)
{
CCJSONContext *pCtx = (CCJSONContext *)context;
if (length)
{
switch (pCtx->array_depth)
{
case 0:
if (pCtx->object_depth == 1)
{
pCtx->current_string_val = NULL;
if (string_is_equal(pValue, "version"))
pCtx->current_string_val = &pCtx->core_info_cache_list->version;
}
break;
case 1:
if (pCtx->object_depth == 2)
{
pCtx->current_string_val = NULL;
pCtx->current_string_list_val = NULL;
pCtx->current_entry_uint_val = NULL;
pCtx->current_entry_bool_val = NULL;
pCtx->to_core_file_id = false;
pCtx->to_firmware = false;
switch (pValue[0])
{
case 'a':
if (string_is_equal(pValue, "authors"))
{
pCtx->current_string_val = &pCtx->core_info->authors;
pCtx->current_string_list_val = &pCtx->core_info->authors_list;
}
break;
case 'c':
if (string_is_equal(pValue, "categories"))
{
pCtx->current_string_val = &pCtx->core_info->categories;
pCtx->current_string_list_val = &pCtx->core_info->categories_list;
}
else if (string_is_equal(pValue, "core_name"))
pCtx->current_string_val = &pCtx->core_info->core_name;
else if (string_is_equal(pValue, "core_file_id"))
pCtx->to_core_file_id = true;
break;
case 'd':
if (string_is_equal(pValue, "display_name"))
pCtx->current_string_val = &pCtx->core_info->display_name;
else if (string_is_equal(pValue, "display_version"))
pCtx->current_string_val = &pCtx->core_info->display_version;
else if (string_is_equal(pValue, "databases"))
{
pCtx->current_string_val = &pCtx->core_info->databases;
pCtx->current_string_list_val = &pCtx->core_info->databases_list;
}
else if (string_is_equal(pValue, "description"))
pCtx->current_string_val = &pCtx->core_info->description;
else if (string_is_equal(pValue, "database_match_archive_member"))
pCtx->current_entry_bool_val = &pCtx->core_info->database_match_archive_member;
break;
case 'f':
if (string_is_equal(pValue, "firmware"))
pCtx->to_firmware = true;
break;
case 'h':
if (string_is_equal(pValue, "has_info"))
pCtx->current_entry_bool_val = &pCtx->core_info->has_info;
break;
case 'l':
if (string_is_equal(pValue, "licenses"))
{
pCtx->current_string_val = &pCtx->core_info->licenses;
pCtx->current_string_list_val = &pCtx->core_info->licenses_list;
}
else if (string_is_equal(pValue, "is_experimental"))
pCtx->current_entry_bool_val = &pCtx->core_info->is_experimental;
break;
case 'n':
if (string_is_equal(pValue, "notes"))
{
pCtx->current_string_val = &pCtx->core_info->notes;
pCtx->current_string_list_val = &pCtx->core_info->note_list;
}
break;
case 'p':
if (string_is_equal(pValue, "permissions"))
{
pCtx->current_string_val = &pCtx->core_info->permissions;
pCtx->current_string_list_val = &pCtx->core_info->permissions_list;
}
break;
case 'r':
if (string_is_equal(pValue, "required_hw_api"))
{
pCtx->current_string_val = &pCtx->core_info->required_hw_api;
pCtx->current_string_list_val = &pCtx->core_info->required_hw_api_list;
}
break;
case 's':
if (string_is_equal(pValue, "system_manufacturer"))
pCtx->current_string_val = &pCtx->core_info->system_manufacturer;
else if (string_is_equal(pValue, "systemname"))
pCtx->current_string_val = &pCtx->core_info->systemname;
else if (string_is_equal(pValue, "system_id"))
pCtx->current_string_val = &pCtx->core_info->system_id;
else if (string_is_equal(pValue, "supported_extensions"))
{
pCtx->current_string_val = &pCtx->core_info->supported_extensions;
pCtx->current_string_list_val = &pCtx->core_info->supported_extensions_list;
}
else if (string_is_equal(pValue, "supports_no_game"))
pCtx->current_entry_bool_val = &pCtx->core_info->supports_no_game;
else if (string_is_equal(pValue, "single_purpose"))
pCtx->current_entry_bool_val = &pCtx->core_info->single_purpose;
else if (string_is_equal(pValue, "savestate_support_level"))
pCtx->current_entry_uint_val = &pCtx->core_info->savestate_support_level;
break;
}
}
else if (pCtx->object_depth == 3)
{
pCtx->current_string_val = NULL;
pCtx->current_entry_uint_val = NULL;
if (pCtx->to_core_file_id)
{
if (string_is_equal(pValue, "str"))
pCtx->current_string_val = &pCtx->core_info->core_file_id.str;
else if (string_is_equal(pValue, "hash"))
pCtx->current_entry_uint_val = &pCtx->core_info->core_file_id.hash;
}
}
break;
case 2:
if (pCtx->object_depth == 3)
{
pCtx->current_string_val = NULL;
pCtx->current_entry_bool_val = NULL;
if (pCtx->to_firmware && (pCtx->core_info->firmware_count > 0))
{
size_t firmware_idx = pCtx->core_info->firmware_count - 1;
if (string_is_equal(pValue, "path"))
pCtx->current_string_val = &pCtx->core_info->firmware[firmware_idx].path;
else if (string_is_equal(pValue, "desc"))
pCtx->current_string_val = &pCtx->core_info->firmware[firmware_idx].desc;
else if (string_is_equal(pValue, "optional"))
pCtx->current_entry_bool_val = &pCtx->core_info->firmware[firmware_idx].optional;
}
}
break;
}
}
return true;
}
static bool CCJSONStringHandler(void *context,
const char *pValue, size_t length)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if ( pCtx->current_string_val
&& length
&& !string_is_empty(pValue))
{
if (*pCtx->current_string_val)
free(*pCtx->current_string_val);
*pCtx->current_string_val = strdup(pValue);
if (pCtx->current_string_list_val)
{
if (*pCtx->current_string_list_val)
string_list_free(*pCtx->current_string_list_val);
*pCtx->current_string_list_val =
string_split(*pCtx->current_string_val, "|");
}
}
pCtx->current_string_val = NULL;
pCtx->current_string_list_val = NULL;
return true;
}
static bool CCJSONNumberHandler(void *context,
const char *pValue, size_t length)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if (pCtx->current_entry_uint_val)
*pCtx->current_entry_uint_val = string_to_unsigned(pValue);
pCtx->current_entry_uint_val = NULL;
return true;
}
static bool CCJSONBoolHandler(void *context, bool value)
{
CCJSONContext *pCtx = (CCJSONContext *)context;
if (pCtx->current_entry_bool_val)
*pCtx->current_entry_bool_val = value;
pCtx->current_entry_bool_val = NULL;
return true;
}
static bool CCJSONStartObjectHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
pCtx->object_depth++;
switch (pCtx->array_depth)
{
case 0:
if (pCtx->object_depth == 1)
{
if (pCtx->core_info_cache_list)
return false;
if (!(pCtx->core_info_cache_list = core_info_cache_list_new()))
return false;
}
break;
case 1:
if (pCtx->object_depth == 2)
{
if (pCtx->core_info)
{
core_info_free(pCtx->core_info);
free(pCtx->core_info);
pCtx->core_info = NULL;
}
if (!(pCtx->core_info = (core_info_t*)calloc(1, sizeof(core_info_t))))
return false;
/* Assume all cores have 'full' savestate support
* by default */
pCtx->core_info->savestate_support_level =
CORE_INFO_SAVESTATE_DETERMINISTIC;
}
break;
case 2:
if (pCtx->object_depth == 3 && pCtx->to_firmware)
{
size_t new_idx = pCtx->core_info->firmware_count;
core_info_firmware_t *tmp = (core_info_firmware_t*)
realloc(pCtx->core_info->firmware,
(pCtx->core_info->firmware_count + 1)
* sizeof(core_info_firmware_t));
if (!tmp)
return false;
tmp[new_idx].path = NULL;
tmp[new_idx].desc = NULL;
tmp[new_idx].missing = false;
tmp[new_idx].optional = false;
pCtx->core_info->firmware = tmp;
pCtx->core_info->firmware_count++;
}
break;
}
return true;
}
static bool CCJSONEndObjectHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if (pCtx->array_depth == 1)
{
switch (pCtx->object_depth)
{
case 2:
if (pCtx->core_info)
{
core_info_cache_add(
pCtx->core_info_cache_list, pCtx->core_info, true);
free(pCtx->core_info);
pCtx->core_info = NULL;
}
break;
case 3:
pCtx->to_core_file_id = false;
break;
default:
break;
}
}
pCtx->object_depth--;
return true;
}
static bool CCJSONStartArrayHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
pCtx->array_depth++;
return true;
}
static bool CCJSONEndArrayHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if ((pCtx->object_depth == 2) && (pCtx->array_depth == 2))
pCtx->to_firmware = false;
pCtx->array_depth--;
return true;
}
/* JSON Handlers END */
#endif
/* Note: 'dst' must be zero initialised, or memory
* leaks will occur */
static void core_info_copy(core_info_t *src, core_info_t *dst)
{
dst->path = src->path ? strdup(src->path) : NULL;
dst->display_name = src->display_name ? strdup(src->display_name) : NULL;
dst->display_version = src->display_version ? strdup(src->display_version) : NULL;
dst->core_name = src->core_name ? strdup(src->core_name) : NULL;
dst->system_manufacturer = src->system_manufacturer ? strdup(src->system_manufacturer) : NULL;
dst->systemname = src->systemname ? strdup(src->systemname) : NULL;
dst->system_id = src->system_id ? strdup(src->system_id) : NULL;
dst->supported_extensions = src->supported_extensions ? strdup(src->supported_extensions) : NULL;
dst->authors = src->authors ? strdup(src->authors) : NULL;
dst->permissions = src->permissions ? strdup(src->permissions) : NULL;
dst->licenses = src->licenses ? strdup(src->licenses) : NULL;
dst->categories = src->categories ? strdup(src->categories) : NULL;
dst->databases = src->databases ? strdup(src->databases) : NULL;
dst->notes = src->notes ? strdup(src->notes) : NULL;
dst->required_hw_api = src->required_hw_api ? strdup(src->required_hw_api) : NULL;
dst->description = src->description ? strdup(src->description) : NULL;
dst->categories_list = src->categories_list ? string_list_clone(src->categories_list) : NULL;
dst->databases_list = src->databases_list ? string_list_clone(src->databases_list) : NULL;
dst->note_list = src->note_list ? string_list_clone(src->note_list) : NULL;
dst->supported_extensions_list = src->supported_extensions_list ? string_list_clone(src->supported_extensions_list) : NULL;
dst->authors_list = src->authors_list ? string_list_clone(src->authors_list) : NULL;
dst->permissions_list = src->permissions_list ? string_list_clone(src->permissions_list) : NULL;
dst->licenses_list = src->licenses_list ? string_list_clone(src->licenses_list) : NULL;
dst->required_hw_api_list = src->required_hw_api_list ? string_list_clone(src->required_hw_api_list) : NULL;
if (src->firmware_count > 0)
{
dst->firmware = (core_info_firmware_t*)calloc(src->firmware_count,
sizeof(core_info_firmware_t));
if (dst->firmware)
{
size_t i;
dst->firmware_count = src->firmware_count;
for (i = 0; i < src->firmware_count; i++)
{
dst->firmware[i].path = src->firmware[i].path ? strdup(src->firmware[i].path) : NULL;
dst->firmware[i].desc = src->firmware[i].desc ? strdup(src->firmware[i].desc) : NULL;
dst->firmware[i].missing = src->firmware[i].missing;
dst->firmware[i].optional = src->firmware[i].optional;
}
}
else
dst->firmware_count = 0;
}
dst->core_file_id.str = src->core_file_id.str
? strdup(src->core_file_id.str) : NULL;
dst->core_file_id.hash = src->core_file_id.hash;
dst->savestate_support_level = src->savestate_support_level;
dst->has_info = src->has_info;
dst->supports_no_game = src->supports_no_game;
dst->single_purpose = src->single_purpose;
dst->database_match_archive_member = src->database_match_archive_member;
dst->is_experimental = src->is_experimental;
dst->is_locked = src->is_locked;
dst->is_standalone_exempt = src->is_standalone_exempt;
dst->is_installed = src->is_installed;
}
/* Like core_info_copy, but transfers 'ownership'
* of internal objects/data structures from 'src'
* to 'dst' */
static void core_info_transfer(core_info_t *src, core_info_t *dst)
{
dst->path = src->path;
src->path = NULL;
dst->display_name = src->display_name;
src->display_name = NULL;
dst->display_version = src->display_version;
src->display_version = NULL;
dst->core_name = src->core_name;
src->core_name = NULL;
dst->system_manufacturer = src->system_manufacturer;
src->system_manufacturer = NULL;
dst->systemname = src->systemname;
src->systemname = NULL;
dst->system_id = src->system_id;
src->system_id = NULL;
dst->supported_extensions = src->supported_extensions;
src->supported_extensions = NULL;
dst->authors = src->authors;
src->authors = NULL;
dst->permissions = src->permissions;
src->permissions = NULL;
dst->licenses = src->licenses;
src->licenses = NULL;
dst->categories = src->categories;
src->categories = NULL;
dst->databases = src->databases;
src->databases = NULL;
dst->notes = src->notes;
src->notes = NULL;
dst->required_hw_api = src->required_hw_api;
src->required_hw_api = NULL;
dst->description = src->description;
src->description = NULL;
dst->categories_list = src->categories_list;
src->categories_list = NULL;
dst->databases_list = src->databases_list;
src->databases_list = NULL;
dst->note_list = src->note_list;
src->note_list = NULL;
dst->supported_extensions_list = src->supported_extensions_list;
src->supported_extensions_list = NULL;
dst->authors_list = src->authors_list;
src->authors_list = NULL;
dst->permissions_list = src->permissions_list;
src->permissions_list = NULL;
dst->licenses_list = src->licenses_list;
src->licenses_list = NULL;
dst->required_hw_api_list = src->required_hw_api_list;
src->required_hw_api_list = NULL;
dst->firmware = src->firmware;
dst->firmware_count = src->firmware_count;
src->firmware = NULL;
src->firmware_count = 0;
dst->core_file_id.str = src->core_file_id.str;
src->core_file_id.str = NULL;
dst->core_file_id.hash = src->core_file_id.hash;
dst->savestate_support_level = src->savestate_support_level;
dst->has_info = src->has_info;
dst->supports_no_game = src->supports_no_game;
dst->single_purpose = src->single_purpose;
dst->database_match_archive_member = src->database_match_archive_member;
dst->is_experimental = src->is_experimental;
dst->is_locked = src->is_locked;
dst->is_standalone_exempt = src->is_standalone_exempt;
dst->is_installed = src->is_installed;
}
static void core_info_cache_list_free(
core_info_cache_list_t *core_info_cache_list)
{
size_t i;
if (!core_info_cache_list)
return;
for (i = 0; i < core_info_cache_list->length; i++)
{
core_info_t* info = (core_info_t*)&core_info_cache_list->items[i];
core_info_free(info);
}
free(core_info_cache_list->items);
if (core_info_cache_list->version)
free(core_info_cache_list->version);
free(core_info_cache_list);
}
static core_info_t *core_info_cache_find(
core_info_cache_list_t *list, char *core_file_id)
{
uint32_t hash;
size_t i;
if ( !list
|| string_is_empty(core_file_id))
return NULL;
hash = core_info_hash_string(core_file_id);
for (i = 0; i < list->length; i++)
{
core_info_t *info = (core_info_t*)&list->items[i];
if (!info)
continue;
if ( (info->core_file_id.hash == hash)
&& string_is_equal(info->core_file_id.str, core_file_id))
{
info->is_installed = true;
return info;
}
}
return NULL;
}
static void core_info_cache_add(
core_info_cache_list_t *list, core_info_t *info,
bool transfer)
{
core_info_t *info_cache = NULL;
if ( !list
|| !info
|| (info->core_file_id.hash == 0)
|| string_is_empty(info->core_file_id.str))
return;
if (list->length >= list->capacity)
{
size_t prev_capacity = list->capacity;
core_info_t *items_tmp = (core_info_t*)realloc(list->items,
(list->capacity << 1) * sizeof(core_info_t));
if (!items_tmp)
return;
list->capacity = list->capacity << 1;
list->items = items_tmp;
memset(&list->items[prev_capacity], 0,
(list->capacity - prev_capacity) * sizeof(core_info_t));
}
info_cache = (core_info_t*)&list->items[list->length];
if (transfer)
core_info_transfer(info, info_cache);
else
core_info_copy(info, info_cache);
list->length++;
}
#ifdef HAVE_CORE_INFO_CACHE
static core_info_cache_list_t *core_info_cache_list_new(void)
{
core_info_cache_list_t *core_info_cache_list =
(core_info_cache_list_t *)malloc(sizeof(*core_info_cache_list));
if (!core_info_cache_list)
return NULL;
core_info_cache_list->length = 0;
core_info_cache_list->items = (core_info_t *)
calloc(CORE_INFO_CACHE_DEFAULT_CAPACITY,
sizeof(core_info_t));
if (!core_info_cache_list->items)
{
core_info_cache_list_free(core_info_cache_list);
return NULL;
}
core_info_cache_list->capacity = CORE_INFO_CACHE_DEFAULT_CAPACITY;
core_info_cache_list->refresh = false;
core_info_cache_list->version = NULL;
return core_info_cache_list;
}
static core_info_cache_list_t *core_info_cache_read(const char *info_dir)
{
intfstream_t *file = NULL;
rjson_t *parser = NULL;
CCJSONContext context = {0};
core_info_cache_list_t *core_info_cache_list = NULL;
char file_path[PATH_MAX_LENGTH];
/* Check whether a 'force refresh' file
* is present */
if (string_is_empty(info_dir))
strlcpy(file_path,
FILE_PATH_CORE_INFO_CACHE_REFRESH, sizeof(file_path));
else
fill_pathname_join_special(file_path,
info_dir, FILE_PATH_CORE_INFO_CACHE_REFRESH,
sizeof(file_path));
if (path_is_valid(file_path))
return core_info_cache_list_new();
/* Open info cache file */
if (string_is_empty(info_dir))
strlcpy(file_path, FILE_PATH_CORE_INFO_CACHE, sizeof(file_path));
else
fill_pathname_join_special(file_path, info_dir,
FILE_PATH_CORE_INFO_CACHE,
sizeof(file_path));
#if defined(HAVE_ZLIB)
file = intfstream_open_rzip_file(file_path,
RETRO_VFS_FILE_ACCESS_READ);
#else
file = intfstream_open_file(file_path,
RETRO_VFS_FILE_ACCESS_READ,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
#endif
if (!file)
return core_info_cache_list_new();
/* Parse info cache file */
if (!(parser = rjson_open_stream(file)))
{
RARCH_ERR("[Core Info]: Failed to create JSON parser.\n");
goto end;
}
rjson_set_options(parser,
RJSON_OPTION_ALLOW_UTF8BOM
| RJSON_OPTION_ALLOW_COMMENTS
| RJSON_OPTION_ALLOW_UNESCAPED_CONTROL_CHARACTERS
| RJSON_OPTION_REPLACE_INVALID_ENCODING);
if (rjson_parse(parser, &context,
CCJSONObjectMemberHandler,
CCJSONStringHandler,
CCJSONNumberHandler,
CCJSONStartObjectHandler,
CCJSONEndObjectHandler,
CCJSONStartArrayHandler,
CCJSONEndArrayHandler,
CCJSONBoolHandler,
NULL) /* Unused null handler */
!= RJSON_DONE)
{
RARCH_WARN("[Core Info]: Error parsing chunk:\n---snip---\n%.*s\n---snip---\n",
rjson_get_source_context_len(parser),
rjson_get_source_context_buf(parser));
RARCH_WARN("[Core Info]: Error: Invalid JSON at line %d, column %d - %s.\n",
(int)rjson_get_source_line(parser),
(int)rjson_get_source_column(parser),
(*rjson_get_error(parser)
? rjson_get_error(parser)
: "format error"));
/* Info cache is corrupt - discard it */
core_info_cache_list_free(context.core_info_cache_list);
core_info_cache_list = core_info_cache_list_new();
}
else
core_info_cache_list = context.core_info_cache_list;
rjson_free(parser);
/* Clean up leftovers in the event of
* a parsing error */
if (context.core_info)
{
core_info_free(context.core_info);
free(context.core_info);
}
if (!core_info_cache_list)
goto end;
/* If info cache file has the wrong version
* number, discard it */
if ( string_is_empty(core_info_cache_list->version)
|| !string_is_equal(core_info_cache_list->version,
CORE_INFO_CACHE_VERSION))
{
RARCH_WARN("[Core Info]: Core info cache has invalid version"
" - forcing refresh (required v%s, found v%s).\n",
CORE_INFO_CACHE_VERSION,
core_info_cache_list->version);
core_info_cache_list_free(context.core_info_cache_list);
core_info_cache_list = core_info_cache_list_new();
}
end:
intfstream_close(file);
free(file);
return core_info_cache_list;
}
#endif
static bool core_info_cache_write(core_info_cache_list_t *list, const char *info_dir)
{
intfstream_t *file = NULL;
rjsonwriter_t *writer = NULL;
bool success = false;
char file_path[PATH_MAX_LENGTH];
size_t i, j;
if (!list)
return false;
/* Open info cache file */
if (string_is_empty(info_dir))
strlcpy(file_path, FILE_PATH_CORE_INFO_CACHE, sizeof(file_path));
else
fill_pathname_join_special(file_path, info_dir,
FILE_PATH_CORE_INFO_CACHE,
sizeof(file_path));
#if defined(CORE_INFO_CACHE_COMPRESS)
file = intfstream_open_rzip_file(file_path,
RETRO_VFS_FILE_ACCESS_WRITE);
#else
file = intfstream_open_file(file_path,
RETRO_VFS_FILE_ACCESS_WRITE,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
#endif
if (!file)
{
RARCH_ERR("[Core Info]: Failed to write core info cache file: \"%s\".\n", file_path);
return false;
}
/* Write info cache */
if (!(writer = rjsonwriter_open_stream(file)))
{
RARCH_ERR("[Core Info]: Failed to create JSON writer.\n");
goto end;
}
#if defined(CORE_INFO_CACHE_COMPRESS)
/* When compressing info cache, human readability
* is not a factor - can skip all indentation
* and new line characters */
rjsonwriter_set_options(writer, RJSONWRITER_OPTION_SKIP_WHITESPACE);
#endif
rjsonwriter_raw(writer, "{", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 2);
rjsonwriter_add_string(writer, "version");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, CORE_INFO_CACHE_VERSION);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 2);
rjsonwriter_add_string(writer, "items");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_raw(writer, "[", 1);
rjsonwriter_raw(writer, "\n", 1);
for (i = 0; i < list->length; i++)
{
core_info_t* info = &list->items[i];
if (!info || !info->is_installed)
continue;
if (i > 0)
{
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
}
rjsonwriter_add_spaces(writer, 4);
rjsonwriter_raw(writer, "{", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "display_name");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->display_name);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "display_version");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->display_version);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "core_name");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->core_name);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "system_manufacturer");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->system_manufacturer);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "systemname");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->systemname);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "system_id");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->system_id);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "supported_extensions");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->supported_extensions);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "authors");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->authors);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "permissions");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->permissions);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "licenses");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->licenses);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "categories");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->categories);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);