mirror of
https://github.com/jakcron/nstool
synced 2024-11-22 13:39:28 +00:00
[fnd] Implement Windows 64bit size_t support in SimpleFile.
This commit is contained in:
jakcron
parent
57d03b6076
commit
93509fac5a
2 changed files with 239 additions and 6 deletions
|
|
@ -1,7 +1,11 @@
|
|||
#pragma once
|
||||
#include <fnd/IFile.h>
|
||||
#include <string>
|
||||
#ifdef _WIN32
|
||||
#include <Windows.h>
|
||||
#else
|
||||
#include <cstdio>
|
||||
#endif
|
||||
|
||||
namespace fnd
|
||||
{
|
||||
|
|
@ -34,9 +38,16 @@ namespace fnd
|
|||
|
||||
bool mOpen;
|
||||
OpenMode mMode;
|
||||
FILE* mFp;
|
||||
|
||||
const char* getOpenModeStr(OpenMode mMode);
|
||||
#ifdef _WIN32
|
||||
HANDLE mFileHandle;
|
||||
DWORD getOpenModeFlag(OpenMode mode) const;
|
||||
DWORD getShareModeFlag(OpenMode mode) const;
|
||||
DWORD getCreationModeFlag(OpenMode mode) const;
|
||||
#else
|
||||
FILE* mFp;
|
||||
const char* getOpenModeStr(OpenMode mode);
|
||||
#endif
|
||||
};
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,11 +1,16 @@
|
|||
#include <fnd/SimpleFile.h>
|
||||
#include <fnd/StringConv.h>
|
||||
|
||||
using namespace fnd;
|
||||
|
||||
SimpleFile::SimpleFile() :
|
||||
mOpen(false),
|
||||
mMode(Read),
|
||||
#ifdef _WIN32
|
||||
mFileHandle()
|
||||
#else
|
||||
mFp(nullptr)
|
||||
#endif
|
||||
{
|
||||
}
|
||||
|
||||
|
|
@ -16,6 +21,29 @@ SimpleFile::~SimpleFile()
|
|||
|
||||
void SimpleFile::open(const std::string& path, OpenMode mode)
|
||||
{
|
||||
#ifdef _WIN32
|
||||
// convert string to unicode
|
||||
std::u16string unicodePath = fnd::StringConv::ConvertChar8ToChar16(path);
|
||||
|
||||
// save mode
|
||||
mMode = mode;
|
||||
|
||||
// open file
|
||||
mFileHandle = CreateFileW((LPCWSTR)unicodePath.c_str(),
|
||||
getOpenModeFlag(mMode),
|
||||
getShareModeFlag(mMode),
|
||||
0,
|
||||
getCreationModeFlag(mMode),
|
||||
FILE_ATTRIBUTE_NORMAL,
|
||||
NULL);
|
||||
// check file handle
|
||||
if (mFileHandle == INVALID_HANDLE_VALUE)
|
||||
{
|
||||
throw fnd::Exception(kModuleName, "Failed to open file.");
|
||||
}
|
||||
|
||||
|
||||
#else
|
||||
//close();
|
||||
mMode = mode;
|
||||
//printf("fopen(%s,%s);\n", path.c_str(), getOpenModeStr(mMode));
|
||||
|
|
@ -23,46 +51,140 @@ void SimpleFile::open(const std::string& path, OpenMode mode)
|
|||
if (mFp == nullptr)
|
||||
throw fnd::Exception(kModuleName, "Failed to open file.");
|
||||
mOpen = true;
|
||||
#endif
|
||||
|
||||
seek(0);
|
||||
}
|
||||
|
||||
bool SimpleFile::isOpen() const
|
||||
{
|
||||
return mOpen == true && mFp != nullptr;
|
||||
return mOpen == true;
|
||||
}
|
||||
|
||||
void SimpleFile::close()
|
||||
{
|
||||
if (isOpen())
|
||||
{
|
||||
#ifdef _WIN32
|
||||
CloseHandle(mFileHandle);
|
||||
#else
|
||||
fclose(mFp);
|
||||
mFp = nullptr;
|
||||
#endif
|
||||
}
|
||||
mFp = nullptr;
|
||||
mOpen = false;
|
||||
}
|
||||
|
||||
size_t SimpleFile::size()
|
||||
{
|
||||
size_t fsize = 0;
|
||||
#ifdef _WIN32
|
||||
if (mMode != Create)
|
||||
{
|
||||
LARGE_INTEGER win_fsize;
|
||||
if (GetFileSizeEx(mFileHandle, &win_fsize) == false)
|
||||
{
|
||||
throw fnd::Exception(kModuleName, "Failed to check filesize");
|
||||
}
|
||||
|
||||
fsize = win_fsize.QuadPart;
|
||||
}
|
||||
else
|
||||
{
|
||||
fsize = 0;
|
||||
}
|
||||
#else
|
||||
size_t cur_pos = pos();
|
||||
fseek(mFp, 0, SEEK_END);
|
||||
size_t fsize = pos();
|
||||
fsize = pos();
|
||||
seek(cur_pos);
|
||||
#endif
|
||||
return fsize;
|
||||
}
|
||||
|
||||
void SimpleFile::seek(size_t offset)
|
||||
{
|
||||
#ifdef _WIN32
|
||||
LARGE_INTEGER win_pos, out;
|
||||
win_pos.QuadPart = offset;
|
||||
if (SetFilePointerEx(
|
||||
mFileHandle,
|
||||
win_pos,
|
||||
&out,
|
||||
FILE_BEGIN
|
||||
) == false || out.QuadPart != win_pos.QuadPart)
|
||||
{
|
||||
throw fnd::Exception(kModuleName, "Failed to change file offset");
|
||||
}
|
||||
#else
|
||||
fseek(mFp, offset, SEEK_SET);
|
||||
#endif
|
||||
}
|
||||
|
||||
size_t SimpleFile::pos()
|
||||
{
|
||||
#ifdef _WIN32
|
||||
LARGE_INTEGER win_pos, out;
|
||||
win_pos.QuadPart = 0;
|
||||
if (SetFilePointerEx(
|
||||
mFileHandle,
|
||||
win_pos,
|
||||
&out,
|
||||
FILE_CURRENT
|
||||
) == false)
|
||||
{
|
||||
throw fnd::Exception(kModuleName, "Failed to check file offset");
|
||||
}
|
||||
|
||||
return out.QuadPart;
|
||||
#else
|
||||
return ftell(mFp);
|
||||
#endif
|
||||
}
|
||||
|
||||
void SimpleFile::read(byte_t* out, size_t len)
|
||||
{
|
||||
#ifdef _WIN32
|
||||
LARGE_INTEGER win_len;
|
||||
win_len.QuadPart = len;
|
||||
|
||||
static const DWORD kDwordHalf = (MAXDWORD / (DWORD)2) + 1; // 0x80000000
|
||||
static const size_t kDwordFull = (size_t)kDwordHalf * (size_t)2; // 0x100000000
|
||||
|
||||
// if the size is greater than a DWORD, read it in parts,
|
||||
for (LONG i = 0; i < win_len.HighPart; i++)
|
||||
{
|
||||
// since kDwordFull isn't a valid DWORD value, read in two parts
|
||||
ReadFile(
|
||||
mFileHandle,
|
||||
out + i * kDwordFull,
|
||||
kDwordHalf,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
ReadFile(
|
||||
mFileHandle,
|
||||
out + i * kDwordFull + kDwordHalf,
|
||||
kDwordHalf,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
}
|
||||
|
||||
// read remainding low part
|
||||
if (win_len.LowPart > 0)
|
||||
{
|
||||
ReadFile(
|
||||
mFileHandle,
|
||||
out + win_len.HighPart * kDwordFull,
|
||||
win_len.LowPart,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
}
|
||||
#else
|
||||
fread(out, len, 1, mFp);
|
||||
#endif
|
||||
}
|
||||
|
||||
void SimpleFile::read(byte_t* out, size_t offset, size_t len)
|
||||
|
|
@ -73,7 +195,47 @@ void SimpleFile::read(byte_t* out, size_t offset, size_t len)
|
|||
|
||||
void SimpleFile::write(const byte_t* out, size_t len)
|
||||
{
|
||||
#ifdef _WIN32
|
||||
LARGE_INTEGER win_len;
|
||||
win_len.QuadPart = len;
|
||||
|
||||
static const DWORD kDwordHalf = ((DWORD)MAXDWORD / (DWORD)2) + 1; // 0x80000000
|
||||
static const size_t kDwordFull = (size_t)kDwordHalf * (size_t)2; // 0x100000000
|
||||
|
||||
// if the size is greater than a DWORD, read it in parts,
|
||||
for (LONG i = 0; i < win_len.HighPart; i++)
|
||||
{
|
||||
// since kDwordFull isn't a valid DWORD value, read in two parts
|
||||
WriteFile(
|
||||
mFileHandle,
|
||||
out + i * kDwordFull,
|
||||
kDwordHalf,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
WriteFile(
|
||||
mFileHandle,
|
||||
out + i * kDwordFull + kDwordHalf,
|
||||
kDwordHalf,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
}
|
||||
|
||||
// read remainding low part
|
||||
if (win_len.LowPart > 0)
|
||||
{
|
||||
WriteFile(
|
||||
mFileHandle,
|
||||
out + win_len.HighPart * kDwordFull,
|
||||
win_len.LowPart,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
}
|
||||
#else
|
||||
fwrite(out, len, 1, mFp);
|
||||
#endif
|
||||
}
|
||||
|
||||
void SimpleFile::write(const byte_t* out, size_t offset, size_t len)
|
||||
|
|
@ -82,6 +244,65 @@ void SimpleFile::write(const byte_t* out, size_t offset, size_t len)
|
|||
write(out, len);
|
||||
}
|
||||
|
||||
#ifdef _WIN32
|
||||
DWORD SimpleFile::getOpenModeFlag(OpenMode mode) const
|
||||
{
|
||||
DWORD flag = 0;
|
||||
switch (mode)
|
||||
{
|
||||
case (Read):
|
||||
flag = GENERIC_READ;
|
||||
break;
|
||||
case (Edit):
|
||||
flag = GENERIC_READ | GENERIC_WRITE;
|
||||
break;
|
||||
case (Create):
|
||||
flag = GENERIC_WRITE;
|
||||
break;
|
||||
default:
|
||||
throw fnd::Exception(kModuleName, "Unknown open mode");
|
||||
}
|
||||
return flag;
|
||||
}
|
||||
DWORD fnd::SimpleFile::getShareModeFlag(OpenMode mode) const
|
||||
{
|
||||
DWORD flag = 0;
|
||||
switch (mode)
|
||||
{
|
||||
case (Read):
|
||||
flag = FILE_SHARE_READ;
|
||||
break;
|
||||
case (Edit):
|
||||
flag = FILE_SHARE_READ;
|
||||
break;
|
||||
case (Create):
|
||||
flag = 0;
|
||||
break;
|
||||
default:
|
||||
throw fnd::Exception(kModuleName, "Unknown open mode");
|
||||
}
|
||||
return flag;
|
||||
}
|
||||
DWORD fnd::SimpleFile::getCreationModeFlag(OpenMode mode) const
|
||||
{
|
||||
DWORD flag = 0;
|
||||
switch (mode)
|
||||
{
|
||||
case (Read):
|
||||
flag = OPEN_EXISTING;
|
||||
break;
|
||||
case (Edit):
|
||||
flag = OPEN_EXISTING;
|
||||
break;
|
||||
case (Create):
|
||||
flag = CREATE_ALWAYS;
|
||||
break;
|
||||
default:
|
||||
throw fnd::Exception(kModuleName, "Unknown open mode");
|
||||
}
|
||||
return flag;
|
||||
}
|
||||
#else
|
||||
const char* SimpleFile::getOpenModeStr(OpenMode mode)
|
||||
{
|
||||
const char* str = "";
|
||||
|
|
@ -100,4 +321,5 @@ const char* SimpleFile::getOpenModeStr(OpenMode mode)
|
|||
throw fnd::Exception(kModuleName, "Unknown open mode");
|
||||
}
|
||||
return str;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
Loading…
Reference in a new issue