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291 lines (233 loc) · 7.46 KB
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/* mz_strm_win32.c -- Stream for filesystem access for windows
Version 2.2.7, January 30th, 2018
part of the MiniZip project
Copyright (C) 2010-2018 Nathan Moinvaziri
https://github.com/nmoinvaz/minizip
Copyright (C) 2009-2010 Mathias Svensson
Modifications for Zip64 support
http://result42.com
Copyright (C) 1998-2010 Gilles Vollant
http://www.winimage.com/zLibDll/minizip.html
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include <stdlib.h>
#include <windows.h>
#include "mz.h"
#include "mz_strm.h"
#include "mz_strm_win32.h"
/***************************************************************************/
#ifndef INVALID_HANDLE_VALUE
# define INVALID_HANDLE_VALUE (0xFFFFFFFF)
#endif
#ifndef INVALID_SET_FILE_POINTER
# define INVALID_SET_FILE_POINTER ((DWORD)-1)
#endif
#if defined(WINAPI_FAMILY_ONE_PARTITION) && !defined(MZ_USE_WINRT_API)
# if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP)
# define MZ_USE_WINRT_API 1
# endif
#endif
/***************************************************************************/
mz_stream_vtbl mz_stream_win32_vtbl = {
mz_stream_win32_open,
mz_stream_win32_is_open,
mz_stream_win32_read,
mz_stream_win32_write,
mz_stream_win32_tell,
mz_stream_win32_seek,
mz_stream_win32_close,
mz_stream_win32_error,
mz_stream_win32_create,
mz_stream_win32_delete
};
/***************************************************************************/
typedef struct mz_stream_win32_s
{
mz_stream stream;
HANDLE handle;
int32_t error;
} mz_stream_win32;
/***************************************************************************/
int32_t mz_stream_win32_open(void *stream, const char *path, int32_t mode)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
uint32_t desired_access = 0;
uint32_t creation_disposition = 0;
uint32_t share_mode = FILE_SHARE_READ;
uint32_t flags_attribs = FILE_ATTRIBUTE_NORMAL;
wchar_t *path_wide = NULL;
uint32_t path_wide_size = 0;
if (path == NULL)
return MZ_STREAM_ERROR;
if ((mode & MZ_OPEN_MODE_READWRITE) == MZ_OPEN_MODE_READ)
{
desired_access = GENERIC_READ;
creation_disposition = OPEN_EXISTING;
share_mode &= FILE_SHARE_WRITE;
}
else if (mode & MZ_OPEN_MODE_APPEND)
{
desired_access = GENERIC_WRITE | GENERIC_READ;
creation_disposition = OPEN_EXISTING;
}
else if (mode & MZ_OPEN_MODE_CREATE)
{
desired_access = GENERIC_WRITE | GENERIC_READ;
creation_disposition = CREATE_ALWAYS;
}
else
{
return MZ_STREAM_ERROR;
}
path_wide_size = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0);
path_wide = (wchar_t *)malloc((path_wide_size + 1) * sizeof(wchar_t));
memset(path_wide, 0, sizeof(wchar_t) * (path_wide_size + 1));
MultiByteToWideChar(CP_UTF8, 0, path, -1, path_wide, path_wide_size);
#ifdef MZ_USE_WINRT_API
win32->handle = CreateFile2W(path_wide, desired_access, share_mode, creation_disposition, NULL);
#else
win32->handle = CreateFileW(path_wide, desired_access, share_mode, NULL, creation_disposition, flags_attribs, NULL);
#endif
free(path_wide);
if (mz_stream_win32_is_open(stream) != MZ_OK)
{
win32->error = GetLastError();
return MZ_STREAM_ERROR;
}
if (mode & MZ_OPEN_MODE_APPEND)
return mz_stream_win32_seek(stream, 0, MZ_SEEK_END);
return MZ_OK;
}
int32_t mz_stream_win32_is_open(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
if (win32->handle == NULL || win32->handle == INVALID_HANDLE_VALUE)
return MZ_STREAM_ERROR;
return MZ_OK;
}
int32_t mz_stream_win32_read(void *stream, void *buf, int32_t size)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
uint32_t read = 0;
if (mz_stream_win32_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
if (!ReadFile(win32->handle, buf, size, (DWORD *)&read, NULL))
{
win32->error = GetLastError();
if (win32->error == ERROR_HANDLE_EOF)
win32->error = 0;
}
return read;
}
int32_t mz_stream_win32_write(void *stream, const void *buf, int32_t size)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
uint32_t written = 0;
if (mz_stream_win32_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
if (!WriteFile(win32->handle, buf, size, (DWORD *)&written, NULL))
{
win32->error = GetLastError();
if (win32->error == ERROR_HANDLE_EOF)
win32->error = 0;
}
return written;
}
static int32_t mz_stream_win32_seekinternal(HANDLE handle, LARGE_INTEGER large_pos, LARGE_INTEGER *new_pos, uint32_t move_method)
{
#ifdef MZ_USE_WINRT_API
return SetFilePointerEx(handle, pos, newPos, dwMoveMethod);
#else
LONG high_part = large_pos.HighPart;
uint32_t pos = SetFilePointer(handle, large_pos.LowPart, &high_part, move_method);
if ((pos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
return MZ_STREAM_ERROR;
if (new_pos != NULL)
{
new_pos->LowPart = pos;
new_pos->HighPart = high_part;
}
return MZ_OK;
#endif
}
int64_t mz_stream_win32_tell(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
LARGE_INTEGER large_pos;
if (mz_stream_win32_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
large_pos.QuadPart = 0;
if (mz_stream_win32_seekinternal(win32->handle, large_pos, &large_pos, FILE_CURRENT) != MZ_OK)
win32->error = GetLastError();
return large_pos.QuadPart;
}
int32_t mz_stream_win32_seek(void *stream, int64_t offset, int32_t origin)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
uint32_t move_method = 0xFFFFFFFF;
LARGE_INTEGER large_pos;
if (mz_stream_win32_is_open(stream) == MZ_STREAM_ERROR)
return MZ_STREAM_ERROR;
switch (origin)
{
case MZ_SEEK_CUR:
move_method = FILE_CURRENT;
break;
case MZ_SEEK_END:
move_method = FILE_END;
break;
case MZ_SEEK_SET:
move_method = FILE_BEGIN;
break;
default:
return MZ_STREAM_ERROR;
}
large_pos.QuadPart = offset;
if (mz_stream_win32_seekinternal(win32->handle, large_pos, NULL, move_method) != MZ_OK)
{
win32->error = GetLastError();
return MZ_STREAM_ERROR;
}
return MZ_OK;
}
int mz_stream_win32_close(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
if (win32->handle != NULL)
CloseHandle(win32->handle);
win32->handle = NULL;
return MZ_OK;
}
int mz_stream_win32_error(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
return win32->error;
}
void *mz_stream_win32_create(void **stream)
{
mz_stream_win32 *win32 = NULL;
win32 = (mz_stream_win32 *)malloc(sizeof(mz_stream_win32));
if (win32 != NULL)
{
memset(win32, 0, sizeof(mz_stream_win32));
win32->stream.vtbl = &mz_stream_win32_vtbl;
}
if (stream != NULL)
*stream = win32;
return win32;
}
void mz_stream_win32_delete(void **stream)
{
mz_stream_win32 *win32 = NULL;
if (stream == NULL)
return;
win32 = (mz_stream_win32 *)*stream;
if (win32 != NULL)
free(win32);
*stream = NULL;
}
void *mz_stream_win32_get_interface(void)
{
return (void *)&mz_stream_win32_vtbl;
}