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RetroArch/playlist.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) 2018-2019 - 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libretro.h>
#include <boolean.h>
#include <retro_assert.h>
#include <compat/posix_string.h>
#include <string/stdstring.h>
#include <streams/interface_stream.h>
#include <streams/file_stream.h>
#include <file/file_path.h>
#include <formats/jsonsax_full.h>
#include "playlist.h"
#include "verbosity.h"
#include "configuration.h"
#ifndef PLAYLIST_ENTRIES
#define PLAYLIST_ENTRIES 6
#endif
struct playlist_entry
{
char *path;
char *label;
char *core_path;
char *core_name;
char *db_name;
char *crc32;
unsigned runtime_hours;
unsigned runtime_minutes;
unsigned runtime_seconds;
};
struct content_playlist
{
bool modified;
size_t size;
size_t cap;
char *conf_path;
struct playlist_entry *entries;
};
typedef struct
{
JSON_Parser parser;
JSON_Writer writer;
RFILE *file;
playlist_t *playlist;
struct playlist_entry *current_entry;
unsigned array_depth;
unsigned object_depth;
char **current_entry_val;
int *current_entry_int_val;
unsigned *current_entry_uint_val;
char *current_meta_string;
bool in_items;
} JSONContext;
static playlist_t *playlist_cached = NULL;
typedef int (playlist_sort_fun_t)(
const struct playlist_entry *a,
const struct playlist_entry *b);
uint32_t playlist_get_size(playlist_t *playlist)
{
if (!playlist)
return 0;
return (uint32_t)playlist->size;
}
char *playlist_get_conf_path(playlist_t *playlist)
{
if (!playlist)
return NULL;
return playlist->conf_path;
}
/**
* playlist_get_index:
* @playlist : Playlist handle.
* @idx : Index of playlist entry.
* @path : Path of playlist entry.
* @core_path : Core path of playlist entry.
* @core_name : Core name of playlist entry.
*
* Gets values of playlist index:
**/
void playlist_get_index(playlist_t *playlist,
size_t idx,
const char **path, const char **label,
const char **core_path, const char **core_name,
const char **crc32,
const char **db_name)
{
if (!playlist)
return;
if (path)
*path = playlist->entries[idx].path;
if (label)
*label = playlist->entries[idx].label;
if (core_path)
*core_path = playlist->entries[idx].core_path;
if (core_name)
*core_name = playlist->entries[idx].core_name;
if (db_name)
*db_name = playlist->entries[idx].db_name;
if (crc32)
*crc32 = playlist->entries[idx].crc32;
}
void playlist_get_runtime_index(playlist_t *playlist,
size_t idx,
const char **path, const char **core_path,
unsigned *runtime_hours, unsigned *runtime_minutes,
unsigned *runtime_seconds)
{
if (!playlist)
return;
if (path)
*path = playlist->entries[idx].path;
if (core_path)
*core_path = playlist->entries[idx].core_path;
if (runtime_hours)
*runtime_hours = playlist->entries[idx].runtime_hours;
if (runtime_minutes)
*runtime_minutes = playlist->entries[idx].runtime_minutes;
if (runtime_seconds)
*runtime_seconds = playlist->entries[idx].runtime_seconds;
}
/**
* playlist_delete_index:
* @playlist : Playlist handle.
* @idx : Index of playlist entry.
*
* Delete the entry at the index:
**/
void playlist_delete_index(playlist_t *playlist,
size_t idx)
{
if (!playlist)
return;
playlist->size = playlist->size - 1;
memmove(playlist->entries + idx, playlist->entries + idx + 1,
(playlist->size - idx) * sizeof(struct playlist_entry));
playlist->modified = true;
}
void playlist_get_index_by_path(playlist_t *playlist,
const char *search_path,
char **path, char **label,
char **core_path, char **core_name,
char **crc32,
char **db_name)
{
size_t i;
if (!playlist)
return;
for (i = 0; i < playlist->size; i++)
{
if (!string_is_equal(playlist->entries[i].path, search_path))
continue;
if (path)
*path = playlist->entries[i].path;
if (label)
*label = playlist->entries[i].label;
if (core_path)
*core_path = playlist->entries[i].core_path;
if (core_name)
*core_name = playlist->entries[i].core_name;
if (db_name)
*db_name = playlist->entries[i].db_name;
if (crc32)
*crc32 = playlist->entries[i].crc32;
break;
}
}
bool playlist_entry_exists(playlist_t *playlist,
const char *path,
const char *crc32)
{
size_t i;
if (!playlist)
return false;
for (i = 0; i < playlist->size; i++)
if (string_is_equal(playlist->entries[i].path, path))
return true;
return false;
}
/**
* playlist_free_entry:
* @entry : Playlist entry handle.
*
* Frees playlist entry.
**/
static void playlist_free_entry(struct playlist_entry *entry)
{
if (!entry)
return;
if (entry->path != NULL)
free(entry->path);
if (entry->label != NULL)
free(entry->label);
if (entry->core_path != NULL)
free(entry->core_path);
if (entry->core_name != NULL)
free(entry->core_name);
if (entry->db_name != NULL)
free(entry->db_name);
if (entry->crc32 != NULL)
free(entry->crc32);
entry->path = NULL;
entry->label = NULL;
entry->core_path = NULL;
entry->core_name = NULL;
entry->db_name = NULL;
entry->crc32 = NULL;
entry->runtime_hours = 0;
entry->runtime_minutes = 0;
entry->runtime_seconds = 0;
}
void playlist_update(playlist_t *playlist, size_t idx,
const char *path, const char *label,
const char *core_path, const char *core_name,
const char *crc32,
const char *db_name)
{
struct playlist_entry *entry = NULL;
if (!playlist || idx > playlist->size)
return;
entry = &playlist->entries[idx];
if (path && (path != entry->path))
{
if (entry->path != NULL)
free(entry->path);
entry->path = strdup(path);
playlist->modified = true;
}
if (label && (label != entry->label))
{
if (entry->label != NULL)
free(entry->label);
entry->label = strdup(label);
playlist->modified = true;
}
if (core_path && (core_path != entry->core_path))
{
if (entry->core_path != NULL)
free(entry->core_path);
entry->core_path = NULL;
entry->core_path = strdup(core_path);
playlist->modified = true;
}
if (core_name && (core_name != entry->core_name))
{
if (entry->core_name != NULL)
free(entry->core_name);
entry->core_name = strdup(core_name);
playlist->modified = true;
}
if (db_name && (db_name != entry->db_name))
{
if (entry->db_name != NULL)
free(entry->db_name);
entry->db_name = strdup(db_name);
playlist->modified = true;
}
if (crc32 && (crc32 != entry->crc32))
{
if (entry->crc32 != NULL)
free(entry->crc32);
entry->crc32 = strdup(crc32);
playlist->modified = true;
}
}
void playlist_update_runtime(playlist_t *playlist, size_t idx,
const char *path, const char *core_path,
unsigned runtime_hours, unsigned runtime_minutes,
unsigned runtime_seconds)
{
struct playlist_entry *entry = NULL;
if (!playlist || idx > playlist->size)
return;
entry = &playlist->entries[idx];
if (path && (path != entry->path))
{
if (entry->path != NULL)
free(entry->path);
entry->path = strdup(path);
playlist->modified = true;
}
if (core_path && (core_path != entry->core_path))
{
if (entry->core_path != NULL)
free(entry->core_path);
entry->core_path = NULL;
entry->core_path = strdup(core_path);
playlist->modified = true;
}
if (runtime_hours != entry->runtime_hours)
{
entry->runtime_hours = runtime_hours;
playlist->modified = true;
}
if (runtime_minutes != entry->runtime_minutes)
{
entry->runtime_minutes = runtime_minutes;
playlist->modified = true;
}
if (runtime_seconds != entry->runtime_seconds)
{
entry->runtime_seconds = runtime_seconds;
playlist->modified = true;
}
}
bool playlist_push_runtime(playlist_t *playlist,
const char *path, const char *core_path,
unsigned runtime_hours, unsigned runtime_minutes,
unsigned runtime_seconds)
{
size_t i;
bool core_path_empty = string_is_empty(core_path);
if (core_path_empty)
{
RARCH_ERR("cannot push NULL or empty core name into the playlist.\n");
return false;
}
if (string_is_empty(path))
path = NULL;
if (!playlist)
return false;
for (i = 0; i < playlist->size; i++)
{
struct playlist_entry tmp;
bool equal_path;
equal_path = (!path && !playlist->entries[i].path) ||
(path && playlist->entries[i].path &&
#ifdef _WIN32
/*prevent duplicates on case-insensitive operating systems*/
string_is_equal_noncase(path,playlist->entries[i].path)
#else
string_is_equal(path,playlist->entries[i].path)
#endif
);
/* Core name can have changed while still being the same core.
* Differentiate based on the core path only. */
if (!equal_path)
continue;
if (!string_is_equal(playlist->entries[i].core_path, core_path))
continue;
/* If top entry, we don't want to push a new entry since
* the top and the entry to be pushed are the same. */
if (i == 0)
return false;
/* Seen it before, bump to top. */
tmp = playlist->entries[i];
memmove(playlist->entries + 1, playlist->entries,
i * sizeof(struct playlist_entry));
playlist->entries[0] = tmp;
goto success;
}
if (playlist->size == playlist->cap)
{
struct playlist_entry *entry = &playlist->entries[playlist->cap - 1];
if (entry)
playlist_free_entry(entry);
playlist->size--;
}
if (playlist->entries)
{
memmove(playlist->entries + 1, playlist->entries,
(playlist->cap - 1) * sizeof(struct playlist_entry));
playlist->entries[0].path = NULL;
playlist->entries[0].core_path = NULL;
if (!string_is_empty(path))
playlist->entries[0].path = strdup(path);
if (!string_is_empty(core_path))
playlist->entries[0].core_path = strdup(core_path);
playlist->entries[0].runtime_hours = runtime_hours;
playlist->entries[0].runtime_minutes = runtime_minutes;
playlist->entries[0].runtime_seconds = runtime_seconds;
}
playlist->size++;
success:
playlist->modified = true;
return true;
}
/**
* playlist_push:
* @playlist : Playlist handle.
* @path : Path of new playlist entry.
* @core_path : Core path of new playlist entry.
* @core_name : Core name of new playlist entry.
*
* Push entry to top of playlist.
**/
bool playlist_push(playlist_t *playlist,
const char *path, const char *label,
const char *core_path, const char *core_name,
const char *crc32,
const char *db_name)
{
size_t i;
bool core_path_empty = string_is_empty(core_path);
bool core_name_empty = string_is_empty(core_name);
if (core_path_empty || core_name_empty)
{
if (core_name_empty && !core_path_empty)
{
static char base_path[255] = {0};
fill_pathname_base_noext(base_path, core_path, sizeof(base_path));
core_name = base_path;
}
if (core_path_empty || core_name_empty)
{
RARCH_ERR("cannot push NULL or empty core name into the playlist.\n");
return false;
}
}
if (string_is_empty(path))
path = NULL;
if (!playlist)
return false;
for (i = 0; i < playlist->size; i++)
{
struct playlist_entry tmp;
bool equal_path;
equal_path = (!path && !playlist->entries[i].path) ||
(path && playlist->entries[i].path &&
#ifdef _WIN32
/*prevent duplicates on case-insensitive operating systems*/
string_is_equal_noncase(path,playlist->entries[i].path)
#else
string_is_equal(path,playlist->entries[i].path)
#endif
);
/* Core name can have changed while still being the same core.
* Differentiate based on the core path only. */
if (!equal_path)
continue;
if (!string_is_equal(playlist->entries[i].core_path, core_path))
continue;
/* If top entry, we don't want to push a new entry since
* the top and the entry to be pushed are the same. */
if (i == 0)
return false;
/* Seen it before, bump to top. */
tmp = playlist->entries[i];
memmove(playlist->entries + 1, playlist->entries,
i * sizeof(struct playlist_entry));
playlist->entries[0] = tmp;
goto success;
}
if (playlist->size == playlist->cap)
{
struct playlist_entry *entry = &playlist->entries[playlist->cap - 1];
if (entry)
playlist_free_entry(entry);
playlist->size--;
}
if (playlist->entries)
{
memmove(playlist->entries + 1, playlist->entries,
(playlist->cap - 1) * sizeof(struct playlist_entry));
playlist->entries[0].path = NULL;
playlist->entries[0].label = NULL;
playlist->entries[0].core_path = NULL;
playlist->entries[0].core_name = NULL;
playlist->entries[0].db_name = NULL;
playlist->entries[0].crc32 = NULL;
playlist->entries[0].runtime_hours = 0;
playlist->entries[0].runtime_minutes = 0;
playlist->entries[0].runtime_seconds = 0;
if (!string_is_empty(path))
playlist->entries[0].path = strdup(path);
if (!string_is_empty(label))
playlist->entries[0].label = strdup(label);
if (!string_is_empty(core_path))
playlist->entries[0].core_path = strdup(core_path);
if (!string_is_empty(core_name))
playlist->entries[0].core_name = strdup(core_name);
if (!string_is_empty(db_name))
playlist->entries[0].db_name = strdup(db_name);
if (!string_is_empty(crc32))
playlist->entries[0].crc32 = strdup(crc32);
}
playlist->size++;
success:
playlist->modified = true;
return true;
}
static JSON_Writer_HandlerResult JSONOutputHandler(JSON_Writer writer, const char *pBytes, size_t length)
{
JSONContext *context = (JSONContext*)JSON_Writer_GetUserData(writer);
(void)writer; /* unused */
return filestream_write(context->file, pBytes, length) == length ? JSON_Writer_Continue : JSON_Writer_Abort;
}
static void JSONLogError(JSONContext *pCtx)
{
if (pCtx->parser && JSON_Parser_GetError(pCtx->parser) != JSON_Error_AbortedByHandler)
{
JSON_Error error = JSON_Parser_GetError(pCtx->parser);
JSON_Location errorLocation = { 0, 0, 0 };
(void)JSON_Parser_GetErrorLocation(pCtx->parser, &errorLocation);
RARCH_WARN("Error: Invalid JSON at line %d, column %d (input byte %d) - %s.\n",
(int)errorLocation.line + 1,
(int)errorLocation.column + 1,
(int)errorLocation.byte,
JSON_ErrorString(error));
}
else if (pCtx->writer && JSON_Writer_GetError(pCtx->writer) != JSON_Error_AbortedByHandler)
{
RARCH_WARN("Error: could not write output - %s.\n", JSON_ErrorString(JSON_Writer_GetError(pCtx->writer)));
}
}
void playlist_write_runtime_file(playlist_t *playlist)
{
size_t i;
RFILE *file = NULL;
settings_t *settings = config_get_ptr();
JSONContext context = {0};
if (!playlist || !playlist->modified)
return;
file = filestream_open(playlist->conf_path,
RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!file)
{
RARCH_ERR("Failed to write to playlist file: %s\n", playlist->conf_path);
return;
}
context.writer = JSON_Writer_Create(NULL);
context.file = file;
if (!context.writer)
{
RARCH_ERR("Failed to create JSON writer\n");
goto end;
}
JSON_Writer_SetOutputEncoding(context.writer, JSON_UTF8);
JSON_Writer_SetOutputHandler(context.writer, &JSONOutputHandler);
JSON_Writer_SetUserData(context.writer, &context);
JSON_Writer_WriteStartObject(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 2);
JSON_Writer_WriteString(context.writer, "version", strlen("version"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, "1.0", strlen("1.0"), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 2);
JSON_Writer_WriteString(context.writer, "items", strlen("items"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteStartArray(context.writer);
JSON_Writer_WriteNewLine(context.writer);
for (i = 0; i < playlist->size; i++)
{
JSON_Writer_WriteSpace(context.writer, 4);
JSON_Writer_WriteStartObject(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "path", strlen("path"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].path ? playlist->entries[i].path : "", playlist->entries[i].path ? strlen(playlist->entries[i].path) : 0, JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "core_path", strlen("core_path"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].core_path, strlen(playlist->entries[i].core_path), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
{
char tmp[32] = {0};
snprintf(tmp, sizeof(tmp), "%u", playlist->entries[i].runtime_hours);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "runtime_hours", strlen("runtime_hours"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteNumber(context.writer, tmp, strlen(tmp), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
memset(tmp, 0, sizeof(tmp));
snprintf(tmp, sizeof(tmp), "%u", playlist->entries[i].runtime_minutes);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "runtime_minutes", strlen("runtime_minutes"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteNumber(context.writer, tmp, strlen(tmp), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
memset(tmp, 0, sizeof(tmp));
snprintf(tmp, sizeof(tmp), "%u", playlist->entries[i].runtime_seconds);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "runtime_seconds", strlen("runtime_seconds"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteNumber(context.writer, tmp, strlen(tmp), JSON_UTF8);
JSON_Writer_WriteNewLine(context.writer);
}
JSON_Writer_WriteSpace(context.writer, 4);
JSON_Writer_WriteEndObject(context.writer);
if (i < playlist->size - 1)
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
}
JSON_Writer_WriteSpace(context.writer, 2);
JSON_Writer_WriteEndArray(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteEndObject(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_Free(context.writer);
playlist->modified = false;
RARCH_LOG("Written to playlist file: %s\n", playlist->conf_path);
end:
filestream_close(file);
}
void playlist_write_file(playlist_t *playlist)
{
size_t i;
RFILE *file = NULL;
settings_t *settings = config_get_ptr();
if (!playlist || !playlist->modified)
return;
file = filestream_open(playlist->conf_path,
RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!file)
{
RARCH_ERR("Failed to write to playlist file: %s\n", playlist->conf_path);
return;
}
if (settings->bools.playlist_use_old_format)
{
for (i = 0; i < playlist->size; i++)
filestream_printf(file, "%s\n%s\n%s\n%s\n%s\n%s\n",
playlist->entries[i].path ? playlist->entries[i].path : "",
playlist->entries[i].label ? playlist->entries[i].label : "",
playlist->entries[i].core_path,
playlist->entries[i].core_name,
playlist->entries[i].crc32 ? playlist->entries[i].crc32 : "",
playlist->entries[i].db_name ? playlist->entries[i].db_name : ""
);
}
else
{
JSONContext context = {0};
context.writer = JSON_Writer_Create(NULL);
context.file = file;
if (!context.writer)
{
RARCH_ERR("Failed to create JSON writer\n");
goto end;
}
JSON_Writer_SetOutputEncoding(context.writer, JSON_UTF8);
JSON_Writer_SetOutputHandler(context.writer, &JSONOutputHandler);
JSON_Writer_SetUserData(context.writer, &context);
JSON_Writer_WriteStartObject(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 2);
JSON_Writer_WriteString(context.writer, "version", strlen("version"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, "1.0", strlen("1.0"), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 2);
JSON_Writer_WriteString(context.writer, "items", strlen("items"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteStartArray(context.writer);
JSON_Writer_WriteNewLine(context.writer);
for (i = 0; i < playlist->size; i++)
{
JSON_Writer_WriteSpace(context.writer, 4);
JSON_Writer_WriteStartObject(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "path", strlen("path"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].path ? playlist->entries[i].path : "", playlist->entries[i].path ? strlen(playlist->entries[i].path) : 0, JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "label", strlen("label"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].label ? playlist->entries[i].label : "", playlist->entries[i].label ? strlen(playlist->entries[i].label) : 0, JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "core_path", strlen("core_path"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].core_path, strlen(playlist->entries[i].core_path), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "core_name", strlen("core_name"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].core_name, strlen(playlist->entries[i].core_name), JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "crc32", strlen("crc32"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].crc32 ? playlist->entries[i].crc32 : "", playlist->entries[i].crc32 ? strlen(playlist->entries[i].crc32) : 0, JSON_UTF8);
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 6);
JSON_Writer_WriteString(context.writer, "db_name", strlen("db_name"), JSON_UTF8);
JSON_Writer_WriteColon(context.writer);
JSON_Writer_WriteSpace(context.writer, 1);
JSON_Writer_WriteString(context.writer, playlist->entries[i].db_name ? playlist->entries[i].db_name : "", playlist->entries[i].db_name ? strlen(playlist->entries[i].db_name) : 0, JSON_UTF8);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteSpace(context.writer, 4);
JSON_Writer_WriteEndObject(context.writer);
if (i < playlist->size - 1)
JSON_Writer_WriteComma(context.writer);
JSON_Writer_WriteNewLine(context.writer);
}
JSON_Writer_WriteSpace(context.writer, 2);
JSON_Writer_WriteEndArray(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_WriteEndObject(context.writer);
JSON_Writer_WriteNewLine(context.writer);
JSON_Writer_Free(context.writer);
}
playlist->modified = false;
RARCH_LOG("Written to playlist file: %s\n", playlist->conf_path);
end:
filestream_close(file);
}
/**
* playlist_free:
* @playlist : Playlist handle.
*
* Frees playlist handle.
*/
void playlist_free(playlist_t *playlist)
{
size_t i;
if (!playlist)
return;
if (playlist->conf_path != NULL)
free(playlist->conf_path);
playlist->conf_path = NULL;
for (i = 0; i < playlist->size; i++)
{
struct playlist_entry *entry = &playlist->entries[i];
if (entry)
playlist_free_entry(entry);
}
free(playlist->entries);
playlist->entries = NULL;
free(playlist);
}
/**
* playlist_clear:
* @playlist : Playlist handle.
*
* Clears all playlist entries in playlist.
**/
void playlist_clear(playlist_t *playlist)
{
size_t i;
if (!playlist)
return;
for (i = 0; i < playlist->size; i++)
{
struct playlist_entry *entry = &playlist->entries[i];
if (entry)
playlist_free_entry(entry);
}
playlist->size = 0;
}
/**
* playlist_size:
* @playlist : Playlist handle.
*
* Gets size of playlist.
* Returns: size of playlist.
**/
size_t playlist_size(playlist_t *playlist)
{
if (!playlist)
return 0;
return playlist->size;
}
static JSON_Parser_HandlerResult JSONStartArrayHandler(JSON_Parser parser)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
pCtx->array_depth++;
if (pCtx->object_depth == 1)
{
if (string_is_equal(pCtx->current_meta_string, "items") && pCtx->array_depth == 1)
{
pCtx->in_items = true;
}
}
return JSON_Parser_Continue;
}
static JSON_Parser_HandlerResult JSONEndArrayHandler(JSON_Parser parser)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
retro_assert(pCtx->array_depth > 0);
pCtx->array_depth--;
if (pCtx->object_depth == 1)
{
if (pCtx->in_items && string_is_equal(pCtx->current_meta_string, "items") && pCtx->array_depth == 0)
{
free(pCtx->current_meta_string);
pCtx->current_meta_string = NULL;
pCtx->in_items = false;
}
}
return JSON_Parser_Continue;
}
static JSON_Parser_HandlerResult JSONStartObjectHandler(JSON_Parser parser)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
pCtx->object_depth++;
if (pCtx->in_items && pCtx->object_depth == 2)
{
if (pCtx->array_depth == 1)
{
if (pCtx->playlist->size < pCtx->playlist->cap)
{
pCtx->current_entry = &pCtx->playlist->entries[pCtx->playlist->size];
}
else
{
/* hit max item limit */
return JSON_Parser_Abort;
}
}
}
return JSON_Parser_Continue;
}
static JSON_Parser_HandlerResult JSONEndObjectHandler(JSON_Parser parser)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
if (pCtx->in_items && pCtx->object_depth == 2)
{
if (pCtx->array_depth == 1)
{
pCtx->playlist->size++;
}
}
retro_assert(pCtx->object_depth > 0);
pCtx->object_depth--;
return JSON_Parser_Continue;
}
static JSON_Parser_HandlerResult JSONStringHandler(JSON_Parser parser, char *pValue, size_t length, JSON_StringAttributes attributes)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
(void)attributes; /* unused */
if (pCtx->in_items && pCtx->object_depth == 2)
{
if (pCtx->array_depth == 1)
{
if (pCtx->current_entry_val && length && !string_is_empty(pValue))
{
if (*pCtx->current_entry_val)
free(*pCtx->current_entry_val);
*pCtx->current_entry_val = strdup(pValue);
}
else
{
/* must be a value for an unknown member we aren't tracking, skip it */
}
}
}
else if (pCtx->object_depth == 1)
{
if (pCtx->array_depth == 0)
{
if (pCtx->current_meta_string && length && !string_is_empty(pValue))
{
/* handle any top-level playlist metadata here */
/*RARCH_LOG("found meta: %s = %s\n", pCtx->current_meta_string, pValue);*/
free(pCtx->current_meta_string);
pCtx->current_meta_string = NULL;
}
}
}
pCtx->current_entry_val = NULL;
return JSON_Parser_Continue;
}
static JSON_Parser_HandlerResult JSONNumberHandler(JSON_Parser parser, char *pValue, size_t length, JSON_StringAttributes attributes)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
(void)attributes; /* unused */
if (pCtx->in_items && pCtx->object_depth == 2)
{
if (pCtx->array_depth == 1)
{
if (pCtx->current_entry_int_val && length && !string_is_empty(pValue))
{
*pCtx->current_entry_int_val = strtoul(pValue, NULL, 10);
}
else if (pCtx->current_entry_uint_val && length && !string_is_empty(pValue))
{
*pCtx->current_entry_uint_val = strtoul(pValue, NULL, 10);
}
else
{
/* must be a value for an unknown member we aren't tracking, skip it */
}
}
}
else if (pCtx->object_depth == 1)
{
if (pCtx->array_depth == 0)
{
if (pCtx->current_meta_string && length && !string_is_empty(pValue))
{
/* handle any top-level playlist metadata here */
/*RARCH_LOG("found meta: %s = %s\n", pCtx->current_meta_string, pValue);*/
free(pCtx->current_meta_string);
pCtx->current_meta_string = NULL;
}
}
}
pCtx->current_entry_int_val = NULL;
pCtx->current_entry_uint_val = NULL;
return JSON_Parser_Continue;
}
static JSON_Parser_HandlerResult JSONObjectMemberHandler(JSON_Parser parser, char *pValue, size_t length, JSON_StringAttributes attributes)
{
JSONContext *pCtx = (JSONContext*)JSON_Parser_GetUserData(parser);
(void)attributes; /* unused */
if (pCtx->in_items && pCtx->object_depth == 2)
{
if (pCtx->array_depth == 1)
{
if (pCtx->current_entry_val)
{
/* something went wrong */
RARCH_WARN("JSON parsing failed at line %d.\n", __LINE__);
return JSON_Parser_Abort;
}
if (length)
{
if (string_is_equal(pValue, "path"))
pCtx->current_entry_val = &pCtx->current_entry->path;
else if (string_is_equal(pValue, "label"))
pCtx->current_entry_val = &pCtx->current_entry->label;
else if (string_is_equal(pValue, "core_path"))
pCtx->current_entry_val = &pCtx->current_entry->core_path;
else if (string_is_equal(pValue, "core_name"))
pCtx->current_entry_val = &pCtx->current_entry->core_name;
else if (string_is_equal(pValue, "crc32"))
pCtx->current_entry_val = &pCtx->current_entry->crc32;
else if (string_is_equal(pValue, "db_name"))
pCtx->current_entry_val = &pCtx->current_entry->db_name;
else if (string_is_equal(pValue, "runtime_hours"))
pCtx->current_entry_uint_val = &pCtx->current_entry->runtime_hours;
else if (string_is_equal(pValue, "runtime_minutes"))
pCtx->current_entry_uint_val = &pCtx->current_entry->runtime_minutes;
else if (string_is_equal(pValue, "runtime_seconds"))
pCtx->current_entry_uint_val = &pCtx->current_entry->runtime_seconds;
else
{
/* ignore unknown members */
}
}
}
}
else if (pCtx->object_depth == 1)
{
if (pCtx->array_depth == 0)
{
if (length)
{
if (pCtx->current_meta_string)
free(pCtx->current_meta_string);
pCtx->current_meta_string = strdup(pValue);
}
}
}
return JSON_Parser_Continue;
}
static bool playlist_read_file(
playlist_t *playlist, const char *path)
{
unsigned i;
bool new_format = true;
RFILE *file = filestream_open(path,
RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE);
/* If playlist file does not exist,
* create an empty playlist instead.
*/
if (!file)
return true;
/* Detect format of playlist */
{
char buf[16] = {0};
int64_t bytes_read = filestream_read(file, buf, 15);
/* Empty playlist file */
if (bytes_read == 0)
{
filestream_close(file);
return true;
}
filestream_seek(file, 0, SEEK_SET);
if (bytes_read == 15)
{
if (string_is_equal(buf, "{\n \"version\": "))
{
/* new playlist format detected */
/*RARCH_LOG("New playlist format detected.\n");*/
new_format = true;
}
else
{
/* old playlist format detected */
/*RARCH_LOG("Old playlist format detected.\n");*/
new_format = false;
}
}
else
{
/* corrupt playlist? */
RARCH_ERR("Could not detect playlist format.\n");
}
}
if (new_format)
{
JSONContext context = {0};
context.parser = JSON_Parser_Create(NULL);
context.file = file;
context.playlist = playlist;
if (!context.parser)
{
RARCH_ERR("Failed to create JSON parser\n");
goto end;
}
/*JSON_Parser_SetTrackObjectMembers(context.parser, JSON_True);*/
JSON_Parser_SetAllowBOM(context.parser, JSON_True);
JSON_Parser_SetAllowComments(context.parser, JSON_True);
JSON_Parser_SetAllowSpecialNumbers(context.parser, JSON_True);
JSON_Parser_SetAllowHexNumbers(context.parser, JSON_True);
JSON_Parser_SetAllowUnescapedControlCharacters(context.parser, JSON_True);
JSON_Parser_SetReplaceInvalidEncodingSequences(context.parser, JSON_True);
/*JSON_Parser_SetNullHandler(context.parser, &JSONNullHandler);
JSON_Parser_SetBooleanHandler(context.parser, &JSONBooleanHandler);
JSON_Parser_SetSpecialNumberHandler(context.parser, &JSONSpecialNumberHandler);
JSON_Parser_SetArrayItemHandler(context.parser, &JSONArrayItemHandler);*/
JSON_Parser_SetNumberHandler(context.parser, &JSONNumberHandler);
JSON_Parser_SetStringHandler(context.parser, &JSONStringHandler);
JSON_Parser_SetStartObjectHandler(context.parser, &JSONStartObjectHandler);
JSON_Parser_SetEndObjectHandler(context.parser, &JSONEndObjectHandler);
JSON_Parser_SetObjectMemberHandler(context.parser, &JSONObjectMemberHandler);
JSON_Parser_SetStartArrayHandler(context.parser, &JSONStartArrayHandler);
JSON_Parser_SetEndArrayHandler(context.parser, &JSONEndArrayHandler);
JSON_Parser_SetUserData(context.parser, &context);
while (!filestream_eof(file))
{
char chunk[4096] = {0};
int64_t length = filestream_read(file, chunk, sizeof(chunk));
if (!length && !filestream_eof(file))
{
RARCH_WARN("Could not read JSON input.\n");
JSON_Parser_Free(context.parser);
goto end;
}
if (!JSON_Parser_Parse(context.parser, chunk, length, JSON_False))
{
RARCH_WARN("Error parsing chunk:\n---snip---\n%s\n---snip---\n", chunk);
JSONLogError(&context);
JSON_Parser_Free(context.parser);
goto end;
}
}
if (!JSON_Parser_Parse(context.parser, NULL, 0, JSON_True))
{
RARCH_WARN("Error parsing JSON.\n");
JSONLogError(&context);
JSON_Parser_Free(context.parser);
goto end;
}
JSON_Parser_Free(context.parser);
if (context.current_meta_string)
free(context.current_meta_string);
}
else
{
char buf[PLAYLIST_ENTRIES][1024] = {{0}};
for (i = 0; i < PLAYLIST_ENTRIES; i++)
buf[i][0] = '\0';
for (playlist->size = 0; playlist->size < playlist->cap; )
{
unsigned i;
struct playlist_entry *entry = NULL;
for (i = 0; i < PLAYLIST_ENTRIES; i++)
{
char *last = NULL;
*buf[i] = '\0';
if (!filestream_gets(file, buf[i], sizeof(buf[i])))
goto end;
/* Read playlist entry and terminate string with NUL character
* regardless of Windows or Unix line endings
*/
if((last = strrchr(buf[i], '\r')))
*last = '\0';
else if((last = strrchr(buf[i], '\n')))
*last = '\0';
}
entry = &playlist->entries[playlist->size];
if (!*buf[2] || !*buf[3])
continue;
if (*buf[0])
entry->path = strdup(buf[0]);
if (*buf[1])
entry->label = strdup(buf[1]);
entry->core_path = strdup(buf[2]);
entry->core_name = strdup(buf[3]);
if (*buf[4])
entry->crc32 = strdup(buf[4]);
if (*buf[5])
entry->db_name = strdup(buf[5]);
playlist->size++;
}
}
end:
filestream_close(file);
return true;
}
void playlist_free_cached(void)
{
playlist_free(playlist_cached);
playlist_cached = NULL;
}
playlist_t *playlist_get_cached(void)
{
if (playlist_cached)
return playlist_cached;
return NULL;
}
bool playlist_init_cached(const char *path, size_t size)
{
playlist_t *playlist = playlist_init(path, size);
if (!playlist)
return false;
playlist_cached = playlist;
return true;
}
/**
* playlist_init:
* @path : Path to playlist contents file.
* @size : Maximum capacity of playlist size.
*
* Creates and initializes a playlist.
*
* Returns: handle to new playlist if successful, otherwise NULL
**/
playlist_t *playlist_init(const char *path, size_t size)
{
struct playlist_entry *entries = NULL;
playlist_t *playlist = (playlist_t*)malloc(sizeof(*playlist));
if (!playlist)
return NULL;
entries = (struct playlist_entry*)calloc(size, sizeof(*entries));
if (!entries)
{
free(playlist);
return NULL;
}
playlist->modified = false;
playlist->size = 0;
playlist->cap = size;
playlist->conf_path = strdup(path);
playlist->entries = entries;
playlist_read_file(playlist, path);
return playlist;
}
static int playlist_qsort_func(const struct playlist_entry *a,
const struct playlist_entry *b)
{
const char *a_label = a ? a->label : NULL;
const char *b_label = b ? b->label : NULL;
if (!a_label || !b_label)
return 0;
return strcasecmp(a_label, b_label);
}
void playlist_qsort(playlist_t *playlist)
{
qsort(playlist->entries, playlist->size,
sizeof(struct playlist_entry),
(int (*)(const void *, const void *))playlist_qsort_func);
}
void command_playlist_push_write(
playlist_t *playlist,
const char *path,
const char *label,
const char *core_path,
const char *core_name)
{
if (!playlist)
return;
if (playlist_push(
playlist,
path,
label,
core_path,
core_name,
NULL,
NULL
))
playlist_write_file(playlist);
}
void command_playlist_update_write(
playlist_t *plist,
size_t idx,
const char *path,
const char *label,
const char *core_path,
const char *core_display_name,
const char *crc32,
const char *db_name)
{
playlist_t *playlist = plist ? plist : playlist_get_cached();
if (!playlist)
return;
playlist_update(
playlist,
idx,
path,
label,
core_path,
core_display_name,
crc32,
db_name);
playlist_write_file(playlist);
}
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