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Added filesystem operations to SDL_Storage

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This commit is contained in:
Sam Lantinga
2024-03-16 11:03:41 -07:00
parent 7a088527c1
commit f460f42e70
4 changed files with 355 additions and 113 deletions
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202
src/storage/generic/SDL_genericstorage.c
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@@ -23,116 +23,160 @@
#include "../SDL_sysstorage.h"
static char *GENERIC_INTERNAL_CreateFullPath(const char *base, const char *relative)
{
size_t len = 0;
if (base) {
len += SDL_strlen(base);
if (!base) {
return SDL_strdup(relative);
}
len += SDL_strlen(relative) + 1;
char *result = (char*) SDL_malloc(len);
size_t len = SDL_strlen(base) + SDL_strlen(relative) + 1;
char *result = (char*)SDL_malloc(len);
if (result != NULL) {
SDL_snprintf(result, len, "%s%s", base, relative);
}
return result;
}
static int GENERIC_StorageClose(void *userdata)
static int GENERIC_CloseStorage(void *userdata)
{
SDL_free(userdata);
return 0;
}
static SDL_bool GENERIC_StorageReady(void *userdata)
static int GENERIC_EnumerateStorageDirectory(void *userdata, const char *path, SDL_EnumerateDirectoryCallback callback, void *callback_userdata)
{
return SDL_TRUE;
int result = -1;
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, path);
if (fullpath) {
result = SDL_EnumerateDirectory(fullpath, callback, callback_userdata);
SDL_free(fullpath);
}
return result;
}
static int GENERIC_StorageFileSize(void *userdata, const char *path, Uint64 *length)
static int GENERIC_GetStoragePathInfo(void *userdata, const char *path, SDL_PathInfo *info)
{
SDL_IOStream *stream;
Sint64 result;
int result = -1;
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char*) userdata, path);
if (fullpath == NULL) {
return SDL_OutOfMemory();
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, path);
if (fullpath) {
result = SDL_GetPathInfo(fullpath, info);
SDL_free(fullpath);
}
stream = SDL_IOFromFile(fullpath, "rb");
SDL_free(fullpath);
result = SDL_SizeIO(stream);
SDL_CloseIO(stream);
if (result < 0) {
return result;
}
/* FIXME: Should SDL_SizeIO use u64 now...? */
*length = (Uint64) result;
return 0;
return result;
}
static int GENERIC_StorageReadFile(void *userdata, const char *path, void *destination, Uint64 length)
static int GENERIC_ReadStorageFile(void *userdata, const char *path, void *destination, Uint64 length)
{
SDL_IOStream *stream;
char *fullpath;
int fullread;
int result = -1;
if (length > SDL_SIZE_MAX) {
return SDL_SetError("Read size exceeds SDL_SIZE_MAX");
}
fullpath = GENERIC_INTERNAL_CreateFullPath((char*) userdata, path);
if (fullpath == NULL) {
return SDL_OutOfMemory();
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, path);
if (fullpath) {
SDL_IOStream *stream = SDL_IOFromFile(fullpath, "rb");
if (stream) {
/* FIXME: Should SDL_ReadIO use u64 now...? */
if (SDL_ReadIO(stream, destination, (size_t)length) == length) {
result = 0;
}
SDL_CloseIO(stream);
}
SDL_free(fullpath);
}
stream = SDL_IOFromFile(fullpath, "rb");
SDL_free(fullpath);
/* FIXME: Should SDL_ReadIO use u64 now...? */
fullread = (SDL_ReadIO(stream, destination, (size_t) length) == length);
SDL_CloseIO(stream);
return fullread - 1;
return result;
}
static int GENERIC_StorageWriteFile(void *userdata, const char *path, const void *source, Uint64 length)
static int GENERIC_WriteStorageFile(void *userdata, const char *path, const void *source, Uint64 length)
{
/* TODO: Recursively create subdirectories with SDL_mkdir */
SDL_IOStream *stream;
char *fullpath;
int fullwrite;
/* TODO: Recursively create subdirectories with SDL_CreateDirectory */
int result = -1;
if (length > SDL_SIZE_MAX) {
return SDL_SetError("Write size exceeds SDL_SIZE_MAX");
}
fullpath = GENERIC_INTERNAL_CreateFullPath((char*) userdata, path);
if (fullpath == NULL) {
return SDL_OutOfMemory();
}
stream = SDL_IOFromFile(fullpath, "wb");
SDL_free(fullpath);
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, path);
if (fullpath) {
SDL_IOStream *stream = SDL_IOFromFile(fullpath, "wb");
/* FIXME: Should SDL_WriteIO use u64 now...? */
fullwrite = (SDL_WriteIO(stream, source, (size_t) length) == length);
SDL_CloseIO(stream);
return fullwrite - 1;
if (stream) {
/* FIXME: Should SDL_WriteIO use u64 now...? */
if (SDL_WriteIO(stream, source, (size_t)length) == length) {
result = 0;
}
SDL_CloseIO(stream);
}
SDL_free(fullpath);
}
return result;
}
static Uint64 GENERIC_StorageSpaceRemaining(void *userdata)
static int GENERIC_CreateStorageDirectory(void *userdata, const char *path)
{
/* TODO: Recursively create subdirectories with SDL_CreateDirectory */
int result = -1;
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, path);
if (fullpath) {
result = SDL_CreateDirectory(fullpath);
SDL_free(fullpath);
}
return result;
}
static int GENERIC_RemoveStoragePath(void *userdata, const char *path)
{
int result = -1;
char *fullpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, path);
if (fullpath) {
result = SDL_RemovePath(fullpath);
SDL_free(fullpath);
}
return result;
}
static int GENERIC_RenameStoragePath(void *userdata, const char *oldpath, const char *newpath)
{
int result = -1;
char *fulloldpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, oldpath);
char *fullnewpath = GENERIC_INTERNAL_CreateFullPath((char *)userdata, newpath);
if (fulloldpath && fullnewpath) {
result = SDL_RenamePath(fulloldpath, fullnewpath);
}
SDL_free(fulloldpath);
SDL_free(fullnewpath);
return result;
}
static Uint64 GENERIC_GetStorageSpaceRemaining(void *userdata)
{
/* TODO: There's totally a way to query a folder root's quota... */
return SDL_MAX_UINT64;
}
static const SDL_StorageInterface GENERIC_title_iface = {
GENERIC_StorageClose,
GENERIC_StorageReady,
GENERIC_StorageFileSize,
GENERIC_StorageReadFile,
NULL,
NULL
GENERIC_CloseStorage,
NULL, /* ready */
GENERIC_EnumerateStorageDirectory,
GENERIC_GetStoragePathInfo,
GENERIC_ReadStorageFile,
NULL, /* write_file */
NULL, /* mkdir */
NULL, /* remove */
NULL, /* rename */
NULL /* space_remaining */
};
static SDL_Storage *GENERIC_Title_Create(const char *override, SDL_PropertiesID props)
@@ -163,12 +207,16 @@ TitleStorageBootStrap GENERIC_titlebootstrap = {
};
static const SDL_StorageInterface GENERIC_user_iface = {
GENERIC_StorageClose,
GENERIC_StorageReady,
GENERIC_StorageFileSize,
GENERIC_StorageReadFile,
GENERIC_StorageWriteFile,
GENERIC_StorageSpaceRemaining
GENERIC_CloseStorage,
NULL, /* ready */
GENERIC_EnumerateStorageDirectory,
GENERIC_GetStoragePathInfo,
GENERIC_ReadStorageFile,
GENERIC_WriteStorageFile,
GENERIC_CreateStorageDirectory,
GENERIC_RemoveStoragePath,
GENERIC_RenameStoragePath,
GENERIC_GetStorageSpaceRemaining
};
static SDL_Storage *GENERIC_User_Create(const char *org, const char *app, SDL_PropertiesID props)
@@ -194,12 +242,16 @@ UserStorageBootStrap GENERIC_userbootstrap = {
};
static const SDL_StorageInterface GENERIC_file_iface = {
GENERIC_StorageClose,
GENERIC_StorageReady,
GENERIC_StorageFileSize,
GENERIC_StorageReadFile,
GENERIC_StorageWriteFile,
GENERIC_StorageSpaceRemaining
GENERIC_CloseStorage,
NULL, /* ready */
GENERIC_EnumerateStorageDirectory,
GENERIC_GetStoragePathInfo,
GENERIC_ReadStorageFile,
GENERIC_WriteStorageFile,
GENERIC_CreateStorageDirectory,
GENERIC_RemoveStoragePath,
GENERIC_RenameStoragePath,
GENERIC_GetStorageSpaceRemaining
};
SDL_Storage *GENERIC_OpenFileStorage(const char *path)