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319 lines (253 loc) · 7.89 KB
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/* mz_strm_win32.c -- Stream for filesystem access for windows
Version 2.9.0, September 18, 2019
part of the MiniZip project
Copyright (C) 2010-2019 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
https://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 "mz.h"
#include "mz_os.h"
#include "mz_strm.h"
#include "mz_strm_os.h"
#include <windows.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_WINRT_API)
# if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP)
# define MZ_WINRT_API 1
# endif
#endif
/***************************************************************************/
static mz_stream_vtbl mz_stream_os_vtbl = {
mz_stream_os_open,
mz_stream_os_is_open,
mz_stream_os_read,
mz_stream_os_write,
mz_stream_os_tell,
mz_stream_os_seek,
mz_stream_os_close,
mz_stream_os_error,
mz_stream_os_create,
mz_stream_os_delete,
NULL,
NULL
};
/***************************************************************************/
typedef struct mz_stream_win32_s
{
mz_stream stream;
HANDLE handle;
int32_t error;
} mz_stream_win32;
/***************************************************************************/
#if 0
# define mz_stream_os_print printf
#else
# define mz_stream_os_print(fmt,...)
#endif
/***************************************************************************/
int32_t mz_stream_os_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;
if (path == NULL)
return MZ_PARAM_ERROR;
/* Some use cases require write sharing as well */
share_mode |= FILE_SHARE_WRITE;
if ((mode & MZ_OPEN_MODE_READWRITE) == MZ_OPEN_MODE_READ)
{
desired_access = GENERIC_READ;
creation_disposition = OPEN_EXISTING;
}
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_PARAM_ERROR;
}
mz_stream_os_print("Win32 - Open - %s (mode %" PRId32 ")\n", path);
path_wide = mz_os_unicode_string_create(path, MZ_ENCODING_UTF8);
if (path_wide == NULL)
return MZ_PARAM_ERROR;
#ifdef MZ_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
mz_os_unicode_string_delete(&path_wide);
if (mz_stream_os_is_open(stream) != MZ_OK)
{
win32->error = GetLastError();
return MZ_OPEN_ERROR;
}
if (mode & MZ_OPEN_MODE_APPEND)
return mz_stream_os_seek(stream, 0, MZ_SEEK_END);
return MZ_OK;
}
int32_t mz_stream_os_is_open(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
if (win32->handle == NULL || win32->handle == INVALID_HANDLE_VALUE)
return MZ_OPEN_ERROR;
return MZ_OK;
}
int32_t mz_stream_os_read(void *stream, void *buf, int32_t size)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
uint32_t read = 0;
if (mz_stream_os_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (!ReadFile(win32->handle, buf, size, (DWORD *)&read, NULL))
{
win32->error = GetLastError();
if (win32->error == ERROR_HANDLE_EOF)
win32->error = 0;
}
mz_stream_os_print("Win32 - Read - %" PRId32 "\n", read);
return read;
}
int32_t mz_stream_os_write(void *stream, const void *buf, int32_t size)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
int32_t written = 0;
if (mz_stream_os_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (!WriteFile(win32->handle, buf, size, (DWORD *)&written, NULL))
{
win32->error = GetLastError();
if (win32->error == ERROR_HANDLE_EOF)
win32->error = 0;
}
mz_stream_os_print("Win32 - Write - %" PRId32 "\n", written);
return written;
}
static int32_t mz_stream_os_seekinternal(HANDLE handle, LARGE_INTEGER large_pos,
LARGE_INTEGER *new_pos, uint32_t move_method)
{
#ifdef MZ_WINRT_API
return SetFilePointerEx(handle, pos, newPos, dwMoveMethod);
#else
LONG high_part = 0;
uint32_t pos = 0;
high_part = large_pos.HighPart;
pos = SetFilePointer(handle, large_pos.LowPart, &high_part, move_method);
if ((pos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
return MZ_SEEK_ERROR;
if (new_pos != NULL)
{
new_pos->LowPart = pos;
new_pos->HighPart = high_part;
}
return MZ_OK;
#endif
}
int64_t mz_stream_os_tell(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
LARGE_INTEGER large_pos;
if (mz_stream_os_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
large_pos.QuadPart = 0;
if (mz_stream_os_seekinternal(win32->handle, large_pos, &large_pos, FILE_CURRENT) != MZ_OK)
win32->error = GetLastError();
mz_stream_os_print("Win32 - Tell - %" PRId64 "\n", large_pos.QuadPart);
return large_pos.QuadPart;
}
int32_t mz_stream_os_seek(void *stream, int64_t offset, int32_t origin)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
uint32_t move_method = 0xFFFFFFFF;
int32_t err = MZ_OK;
LARGE_INTEGER large_pos;
if (mz_stream_os_is_open(stream) != MZ_OK)
return MZ_OPEN_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_SEEK_ERROR;
}
mz_stream_os_print("Win32 - Seek - %" PRId64 " (origin %" PRId32 ")\n", offset, origin);
large_pos.QuadPart = offset;
err = mz_stream_os_seekinternal(win32->handle, large_pos, NULL, move_method);
if (err != MZ_OK)
{
win32->error = GetLastError();
return err;
}
return MZ_OK;
}
int32_t mz_stream_os_close(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
if (win32->handle != NULL)
CloseHandle(win32->handle);
mz_stream_os_print("Win32 - Close\n");
win32->handle = NULL;
return MZ_OK;
}
int32_t mz_stream_os_error(void *stream)
{
mz_stream_win32 *win32 = (mz_stream_win32 *)stream;
return win32->error;
}
void *mz_stream_os_create(void **stream)
{
mz_stream_win32 *win32 = NULL;
win32 = (mz_stream_win32 *)MZ_ALLOC(sizeof(mz_stream_win32));
if (win32 != NULL)
{
memset(win32, 0, sizeof(mz_stream_win32));
win32->stream.vtbl = &mz_stream_os_vtbl;
}
if (stream != NULL)
*stream = win32;
return win32;
}
void mz_stream_os_delete(void **stream)
{
mz_stream_win32 *win32 = NULL;
if (stream == NULL)
return;
win32 = (mz_stream_win32 *)*stream;
if (win32 != NULL)
MZ_FREE(win32);
*stream = NULL;
}
void *mz_stream_os_get_interface(void)
{
return (void *)&mz_stream_os_vtbl;
}