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292 lines
7.5 KiB
292 lines
7.5 KiB
/* mz_strm_win32.c -- Stream for filesystem access for windows |
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Version 2.3.3, June 10, 2018 |
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part of the MiniZip project |
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Copyright (C) 2010-2018 Nathan Moinvaziri |
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https://github.com/nmoinvaz/minizip |
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Copyright (C) 2009-2010 Mathias Svensson |
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Modifications for Zip64 support |
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http://result42.com |
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Copyright (C) 1998-2010 Gilles Vollant |
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http://www.winimage.com/zLibDll/minizip.html |
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This program is distributed under the terms of the same license as zlib. |
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See the accompanying LICENSE file for the full text of the license. |
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*/ |
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#include <stdlib.h> |
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#include <windows.h> |
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#include "mz.h" |
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#include "mz_strm.h" |
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#include "mz_strm_win32.h" |
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/***************************************************************************/ |
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#ifndef INVALID_HANDLE_VALUE |
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# define INVALID_HANDLE_VALUE (0xFFFFFFFF) |
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#endif |
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#ifndef INVALID_SET_FILE_POINTER |
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# define INVALID_SET_FILE_POINTER ((DWORD)-1) |
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#endif |
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#if defined(WINAPI_FAMILY_ONE_PARTITION) && !defined(MZ_USE_WINRT_API) |
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# if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP) |
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# define MZ_USE_WINRT_API 1 |
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# endif |
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#endif |
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/***************************************************************************/ |
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static mz_stream_vtbl mz_stream_win32_vtbl = { |
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mz_stream_win32_open, |
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mz_stream_win32_is_open, |
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mz_stream_win32_read, |
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mz_stream_win32_write, |
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mz_stream_win32_tell, |
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mz_stream_win32_seek, |
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mz_stream_win32_close, |
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mz_stream_win32_error, |
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mz_stream_win32_create, |
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mz_stream_win32_delete, |
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NULL, |
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NULL |
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}; |
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/***************************************************************************/ |
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typedef struct mz_stream_win32_s |
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{ |
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mz_stream stream; |
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HANDLE handle; |
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int32_t error; |
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} mz_stream_win32; |
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/***************************************************************************/ |
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int32_t mz_stream_win32_open(void *stream, const char *path, int32_t mode) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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uint32_t desired_access = 0; |
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uint32_t creation_disposition = 0; |
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uint32_t share_mode = FILE_SHARE_READ; |
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uint32_t flags_attribs = FILE_ATTRIBUTE_NORMAL; |
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wchar_t *path_wide = NULL; |
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uint32_t path_wide_size = 0; |
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if (path == NULL) |
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return MZ_STREAM_ERROR; |
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if ((mode & MZ_OPEN_MODE_READWRITE) == MZ_OPEN_MODE_READ) |
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{ |
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desired_access = GENERIC_READ; |
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creation_disposition = OPEN_EXISTING; |
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} |
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else if (mode & MZ_OPEN_MODE_APPEND) |
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{ |
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desired_access = GENERIC_WRITE | GENERIC_READ; |
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creation_disposition = OPEN_EXISTING; |
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} |
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else if (mode & MZ_OPEN_MODE_CREATE) |
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{ |
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desired_access = GENERIC_WRITE | GENERIC_READ; |
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creation_disposition = CREATE_ALWAYS; |
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} |
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else |
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{ |
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return MZ_STREAM_ERROR; |
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} |
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path_wide_size = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0); |
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path_wide = (wchar_t *)MZ_ALLOC((path_wide_size + 1) * sizeof(wchar_t)); |
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memset(path_wide, 0, sizeof(wchar_t) * (path_wide_size + 1)); |
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MultiByteToWideChar(CP_UTF8, 0, path, -1, path_wide, path_wide_size); |
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#ifdef MZ_USE_WINRT_API |
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win32->handle = CreateFile2W(path_wide, desired_access, share_mode, creation_disposition, NULL); |
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#else |
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win32->handle = CreateFileW(path_wide, desired_access, share_mode, NULL, creation_disposition, flags_attribs, NULL); |
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#endif |
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MZ_FREE(path_wide); |
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if (mz_stream_win32_is_open(stream) != MZ_OK) |
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{ |
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win32->error = GetLastError(); |
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return MZ_STREAM_ERROR; |
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} |
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if (mode & MZ_OPEN_MODE_APPEND) |
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return mz_stream_win32_seek(stream, 0, MZ_SEEK_END); |
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return MZ_OK; |
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} |
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int32_t mz_stream_win32_is_open(void *stream) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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if (win32->handle == NULL || win32->handle == INVALID_HANDLE_VALUE) |
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return MZ_STREAM_ERROR; |
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return MZ_OK; |
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} |
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int32_t mz_stream_win32_read(void *stream, void *buf, int32_t size) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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uint32_t read = 0; |
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if (mz_stream_win32_is_open(stream) != MZ_OK) |
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return MZ_STREAM_ERROR; |
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if (!ReadFile(win32->handle, buf, size, (DWORD *)&read, NULL)) |
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{ |
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win32->error = GetLastError(); |
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if (win32->error == ERROR_HANDLE_EOF) |
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win32->error = 0; |
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} |
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return read; |
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} |
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int32_t mz_stream_win32_write(void *stream, const void *buf, int32_t size) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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uint32_t written = 0; |
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if (mz_stream_win32_is_open(stream) != MZ_OK) |
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return MZ_STREAM_ERROR; |
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if (!WriteFile(win32->handle, buf, size, (DWORD *)&written, NULL)) |
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{ |
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win32->error = GetLastError(); |
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if (win32->error == ERROR_HANDLE_EOF) |
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win32->error = 0; |
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} |
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return written; |
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} |
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static int32_t mz_stream_win32_seekinternal(HANDLE handle, LARGE_INTEGER large_pos, LARGE_INTEGER *new_pos, uint32_t move_method) |
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{ |
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#ifdef MZ_USE_WINRT_API |
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return SetFilePointerEx(handle, pos, newPos, dwMoveMethod); |
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#else |
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LONG high_part = large_pos.HighPart; |
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uint32_t pos = SetFilePointer(handle, large_pos.LowPart, &high_part, move_method); |
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if ((pos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR)) |
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return MZ_STREAM_ERROR; |
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if (new_pos != NULL) |
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{ |
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new_pos->LowPart = pos; |
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new_pos->HighPart = high_part; |
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} |
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return MZ_OK; |
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#endif |
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} |
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int64_t mz_stream_win32_tell(void *stream) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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LARGE_INTEGER large_pos; |
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if (mz_stream_win32_is_open(stream) != MZ_OK) |
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return MZ_STREAM_ERROR; |
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large_pos.QuadPart = 0; |
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if (mz_stream_win32_seekinternal(win32->handle, large_pos, &large_pos, FILE_CURRENT) != MZ_OK) |
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win32->error = GetLastError(); |
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return large_pos.QuadPart; |
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} |
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int32_t mz_stream_win32_seek(void *stream, int64_t offset, int32_t origin) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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uint32_t move_method = 0xFFFFFFFF; |
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LARGE_INTEGER large_pos; |
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if (mz_stream_win32_is_open(stream) == MZ_STREAM_ERROR) |
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return MZ_STREAM_ERROR; |
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switch (origin) |
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{ |
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case MZ_SEEK_CUR: |
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move_method = FILE_CURRENT; |
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break; |
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case MZ_SEEK_END: |
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move_method = FILE_END; |
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break; |
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case MZ_SEEK_SET: |
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move_method = FILE_BEGIN; |
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break; |
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default: |
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return MZ_STREAM_ERROR; |
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} |
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large_pos.QuadPart = offset; |
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if (mz_stream_win32_seekinternal(win32->handle, large_pos, NULL, move_method) != MZ_OK) |
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{ |
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win32->error = GetLastError(); |
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return MZ_STREAM_ERROR; |
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} |
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return MZ_OK; |
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} |
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int mz_stream_win32_close(void *stream) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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if (win32->handle != NULL) |
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CloseHandle(win32->handle); |
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win32->handle = NULL; |
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return MZ_OK; |
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} |
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int mz_stream_win32_error(void *stream) |
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{ |
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mz_stream_win32 *win32 = (mz_stream_win32 *)stream; |
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return win32->error; |
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} |
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void *mz_stream_win32_create(void **stream) |
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{ |
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mz_stream_win32 *win32 = NULL; |
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win32 = (mz_stream_win32 *)MZ_ALLOC(sizeof(mz_stream_win32)); |
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if (win32 != NULL) |
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{ |
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memset(win32, 0, sizeof(mz_stream_win32)); |
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win32->stream.vtbl = &mz_stream_win32_vtbl; |
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} |
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if (stream != NULL) |
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*stream = win32; |
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return win32; |
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} |
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void mz_stream_win32_delete(void **stream) |
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{ |
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mz_stream_win32 *win32 = NULL; |
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if (stream == NULL) |
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return; |
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win32 = (mz_stream_win32 *)*stream; |
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if (win32 != NULL) |
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MZ_FREE(win32); |
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*stream = NULL; |
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} |
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void *mz_stream_win32_get_interface(void) |
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{ |
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return (void *)&mz_stream_win32_vtbl; |
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}
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