141 lines
3.0 KiB
C
141 lines
3.0 KiB
C
/*
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* This file is part of Luma3DS
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* Copyright (C) 2016-2019 Aurora Wright, TuxSH
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
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* * Requiring preservation of specified reasonable legal notices or
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* author attributions in that material or in the Appropriate Legal
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* Notices displayed by works containing it.
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* * Prohibiting misrepresentation of the origin of that material,
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* or requiring that modified versions of such material be marked in
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* reasonable ways as different from the original version.
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*/
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#include <3ds.h>
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#include "ifile.h"
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Result IFile_Open(IFile *file, FS_ArchiveID archiveId, FS_Path archivePath, FS_Path filePath, u32 flags)
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{
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Result res;
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res = FSUSER_OpenFileDirectly(&file->handle, archiveId, archivePath, filePath, flags, 0);
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file->pos = 0;
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file->size = 0;
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return res;
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}
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Result IFile_OpenFromArchive(IFile *file, FS_Archive archive, FS_Path filePath, u32 flags)
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{
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Result res;
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res = FSUSER_OpenFile(&file->handle, archive, filePath, flags, 0);
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file->pos = 0;
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file->size = 0;
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return res;
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}
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Result IFile_Close(IFile *file)
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{
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return FSFILE_Close(file->handle);
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}
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Result IFile_GetSize(IFile *file, u64 *size)
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{
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Result res;
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res = FSFILE_GetSize(file->handle, size);
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file->size = *size;
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return res;
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}
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Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len)
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{
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u32 read;
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u32 left;
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char *buf;
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u64 cur;
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Result res;
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if (len == 0)
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{
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*total = 0;
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return 0;
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}
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buf = (char *)buffer;
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cur = 0;
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left = len;
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while (1)
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{
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res = FSFILE_Read(file->handle, &read, file->pos, buf, left);
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if (R_FAILED(res) || read == 0)
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{
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break;
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}
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cur += read;
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file->pos += read;
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if (read == left)
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{
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break;
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}
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buf += read;
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left -= read;
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}
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*total = cur;
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return res;
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}
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Result IFile_Write(IFile *file, u64 *total, void *buffer, u32 len, u32 flags)
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{
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u32 written;
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u32 left;
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char *buf;
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u64 cur;
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Result res;
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if (len == 0)
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{
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*total = 0;
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return 0;
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}
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buf = (char *)buffer;
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cur = 0;
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left = len;
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while (1)
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{
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res = FSFILE_Write(file->handle, &written, file->pos, buf, left, flags);
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if (R_FAILED(res))
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{
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break;
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}
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cur += written;
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file->pos += written;
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if (written == left)
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{
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break;
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}
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buf += written;
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left -= written;
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}
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*total = cur;
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return res;
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}
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