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fusee_cpp: implement KIP selection

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Michael Scire 2021-09-02 20:40:15 -07:00 • committed by SciresM
parent 622650623c
commit cefdda77e5
7 changed files with 614 additions and 11 deletions
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56
fusee_cpp/program/source/fs/fusee_fs_api.cpp
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@ -19,9 +19,12 @@
namespace ams::fs {
static_assert(sizeof(DirectoryEntry) == sizeof(FILINFO));
namespace {
constexpr size_t MaxFiles = 8;
constexpr size_t MaxDirectories = 2;
constinit bool g_is_sd_mounted = false;
constinit bool g_is_sys_mounted = false;
@ -30,7 +33,9 @@ namespace ams::fs {
alignas(0x10) constinit FATFS g_sys_fs = {};
alignas(0x10) constinit FIL g_files[MaxFiles] = {};
alignas(0x10) constinit DIR g_dirs[MaxDirectories] = {};
constinit bool g_files_opened[MaxFiles] = {};
constinit bool g_dirs_opened[MaxFiles] = {};
constinit int g_open_modes[MaxFiles] = {};
Result TranslateFatFsError(FRESULT res) {
@ -96,12 +101,22 @@ namespace ams::fs {
return static_cast<FIL *>(handle._handle);
}
DIR *GetInternalDirectory(DirectoryHandle handle) {
return static_cast<DIR *>(handle._handle);
}
ALWAYS_INLINE size_t GetFileIndex(FIL *fp) {
const size_t file_index = (fp - g_files);
AMS_ASSERT(file_index < MaxFiles);
return file_index;
}
ALWAYS_INLINE size_t GetDirectoryIndex(DIR *dp) {
const size_t dir_index = (dp - g_dirs);
AMS_ASSERT(dir_index < MaxDirectories);
return dir_index;
}
}
bool MountSdCard() {
@ -176,6 +191,47 @@ namespace ams::fs {
return fs::ResultOpenCountLimit();
}
Result OpenDirectory(DirectoryHandle *out_dir, const char *path) {
/* Find a free directory. */
for (size_t i = 0; i < MaxDirectories; ++i) {
if (!g_dirs_opened[i]) {
/* Open the file. */
DIR *dp = std::addressof(g_dirs[i]);
R_TRY(TranslateFatFsError(f_opendir(dp, path)));
/* Set the output. */
out_dir->_handle = dp;
g_dirs_opened[i] = true;
return ResultSuccess();
}
}
return fs::ResultOpenCountLimit();
}
Result ReadDirectory(s64 *out_count, DirectoryEntry *out_entries, DirectoryHandle handle, s64 max_entries) {
DIR * const dp = GetInternalDirectory(handle);
s64 count = 0;
while (count < max_entries) {
R_TRY(TranslateFatFsError(f_readdir(dp, reinterpret_cast<FILINFO *>(out_entries + count))));
if (out_entries[count].file_name[0] == '\x00') {
break;
}
++count;
}
*out_count = count;
return ResultSuccess();
}
void CloseDirectory(DirectoryHandle handle) {
const size_t index = GetDirectoryIndex(GetInternalDirectory(handle));
f_closedir(std::addressof(g_dirs[index]));
g_dirs_opened[index] = false;
}
Result ReadFile(FileHandle handle, s64 offset, void *buffer, size_t size, const fs::ReadOption &option) {
/* Option is unused. */
AMS_UNUSED(option);