mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
612 lines
14 KiB
612 lines
14 KiB
//+--------------------------------------------------------------------------
|
|
//
|
|
// Copyright (c) 1996 Microsoft Corporation
|
|
//
|
|
// File: convert.cxx
|
|
//
|
|
// Synopsis: Functions for converting between LPSTR, LPWSTR, LPTSTR, and
|
|
// LPOLESTR
|
|
//
|
|
// Functions: CopyString (all versions)
|
|
//
|
|
// TStringToOleString
|
|
// WStringToOleString
|
|
// AStringToOleString
|
|
// OleStringToTString
|
|
// OleStringToWString
|
|
// OleStringToAString
|
|
//
|
|
// History: 01-Aug-96 MikeW Created
|
|
// 31-Oct-96 MikeW Re-wrote to be DBCS aware
|
|
// and less code duplication
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
#include <ctolerpc.h>
|
|
#pragma hdrstop
|
|
|
|
|
|
//
|
|
// NOTE! There are seven functions called CopyString. Collectively
|
|
// they handle copying and converting strings composed of signed,
|
|
// unsigned, and wide chars. C++ polymorphism serves to distinguish
|
|
// them from one another.
|
|
//
|
|
// Three of the CopyString functions are implemented as inline
|
|
// thunks defined in olestr.h
|
|
//
|
|
|
|
#ifndef WIN16
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Function: CopyString
|
|
//
|
|
// Synopsis: Convert a wide (Unicode) string to a multibyte string
|
|
//
|
|
// Parameters: [pszSource] -- The wide string
|
|
// [ppszDest] -- Where to put the multibyte string
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// History: 31-Oct-96 MikeW Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT CopyString(LPCWSTR pszSource, LPSTR *ppszDest)
|
|
{
|
|
int bufferSize;
|
|
HRESULT hr = S_OK;
|
|
|
|
*ppszDest = NULL;
|
|
|
|
//
|
|
// Find the length of the buffer needed for the multibyte string
|
|
//
|
|
|
|
bufferSize = WideCharToMultiByte(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
-1,
|
|
*ppszDest,
|
|
0,
|
|
NULL,
|
|
NULL);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
|
|
//
|
|
// Allocate the buffer
|
|
//
|
|
|
|
if(S_OK == hr)
|
|
{
|
|
*ppszDest = new char[bufferSize];
|
|
|
|
if (NULL == *ppszDest)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Do the conversion
|
|
//
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
bufferSize = WideCharToMultiByte(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
-1,
|
|
*ppszDest,
|
|
bufferSize,
|
|
NULL,
|
|
NULL);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
}
|
|
|
|
//
|
|
// Clean up if there's an error
|
|
//
|
|
|
|
if (S_OK != hr && NULL != *ppszDest)
|
|
{
|
|
delete [] *ppszDest;
|
|
*ppszDest = NULL;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Function: CopyString
|
|
//
|
|
// Synopsis: Convert a multibyte string to a wide (Unicode) string
|
|
//
|
|
// Parameters: [pszSource] -- The multibyte string
|
|
// [ppszDest] -- Where to put the wide string
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// History: 31-Oct-96 MikeW Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT CopyString(LPCSTR pszSource, LPWSTR *ppszDest)
|
|
{
|
|
int bufferSize;
|
|
HRESULT hr = S_OK;
|
|
|
|
*ppszDest = NULL;
|
|
|
|
//
|
|
// Find the length of the buffer needed for the multibyte string
|
|
//
|
|
|
|
bufferSize = MultiByteToWideChar(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
-1,
|
|
*ppszDest,
|
|
0);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
|
|
//
|
|
// Allocate the buffer
|
|
//
|
|
|
|
if(S_OK == hr)
|
|
{
|
|
*ppszDest = new WCHAR[bufferSize];
|
|
|
|
if (NULL == *ppszDest)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Do the conversion
|
|
//
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
bufferSize = MultiByteToWideChar(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
-1,
|
|
*ppszDest,
|
|
bufferSize);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
}
|
|
|
|
//
|
|
// Clean up if there's an error
|
|
//
|
|
|
|
if (S_OK != hr && NULL != *ppszDest)
|
|
{
|
|
delete [] *ppszDest;
|
|
*ppszDest = NULL;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Function: CopyString
|
|
//
|
|
// Synopsis: Copy a wide (Unicode) string
|
|
//
|
|
// Parameters: [pszSource] -- The original string
|
|
// [ppszDest] -- The copy
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// History: 31-Oct-96 MikeW Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT CopyString(LPCWSTR pszSource, LPWSTR *ppszDest)
|
|
{
|
|
int bufferSize;
|
|
HRESULT hr = S_OK;
|
|
|
|
*ppszDest = NULL;
|
|
|
|
//
|
|
// Find the length of the original string
|
|
//
|
|
|
|
bufferSize = wcslen(pszSource) + 1;
|
|
|
|
//
|
|
// Allocate the buffer
|
|
//
|
|
|
|
*ppszDest = new WCHAR[bufferSize];
|
|
|
|
if (NULL == *ppszDest)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
}
|
|
|
|
//
|
|
// Copy the string
|
|
//
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
wcscpy(*ppszDest, pszSource);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Function: CopyString
|
|
//
|
|
// Synopsis: Convert a wide (Unicode) string to a multibyte string
|
|
// cchSource can be -1 which means source is null terminated.
|
|
//
|
|
// Parameters: [pszSource] -- The wide string
|
|
// [pszDest] -- Where to put the multibyte string
|
|
// [cchSource] -- count of characters of source
|
|
// [cchDest] -- count of characters of destination
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// History: 31-Oct-96 MikeW Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT CopyString(LPCWSTR pszSource, LPSTR pszDest,
|
|
int cchSource, int cchDest)
|
|
{
|
|
int bufferSize;
|
|
HRESULT hr = S_OK;
|
|
|
|
//
|
|
// Find the length of the buffer needed for the multibyte string
|
|
//
|
|
|
|
bufferSize = WideCharToMultiByte(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
cchSource,
|
|
pszDest,
|
|
0,
|
|
NULL,
|
|
NULL);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
|
|
if (bufferSize > cchDest)
|
|
{
|
|
hr = E_INVALIDARG;
|
|
}
|
|
|
|
//
|
|
// Do the conversion
|
|
//
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
bufferSize = WideCharToMultiByte(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
cchSource,
|
|
pszDest,
|
|
cchDest,
|
|
NULL,
|
|
NULL);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Function: CopyString
|
|
//
|
|
// Synopsis: Convert a multibyte string to a wide (Unicode) string
|
|
// cchSource can be -1 which means source is null terminated.
|
|
//
|
|
// Parameters: [pszSource] -- The multibyte string
|
|
// [pwszDest] -- Where to put the wide string
|
|
// [cchSource] -- count of characters of source
|
|
// [cchDest] -- count of characters of destination
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// History: 31-Oct-96 MikeW Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT CopyString(LPCSTR pszSource, LPWSTR pwszDest,
|
|
int cchSource, int cchDest)
|
|
{
|
|
int bufferSize;
|
|
HRESULT hr = S_OK;
|
|
|
|
//
|
|
// Find the length of the buffer needed for the multibyte string
|
|
//
|
|
|
|
bufferSize = MultiByteToWideChar(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
cchSource,
|
|
pwszDest,
|
|
0);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
|
|
if (bufferSize > cchDest)
|
|
{
|
|
hr = E_INVALIDARG;
|
|
}
|
|
|
|
//
|
|
// Do the conversion
|
|
//
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
bufferSize = MultiByteToWideChar(
|
|
CP_ACP,
|
|
0,
|
|
pszSource,
|
|
cchSource,
|
|
pwszDest,
|
|
cchDest);
|
|
|
|
if (0 == bufferSize)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Function: CopyString
|
|
//
|
|
// Synopsis: Copy a multibyte string
|
|
//
|
|
// Parameters: [pszSource] -- The original string
|
|
// [ppszDest] -- The copy
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// History: 31-Oct-96 MikeW Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT CopyString(LPCSTR pszSource, LPSTR *ppszDest)
|
|
{
|
|
int bufferSize;
|
|
HRESULT hr = S_OK;
|
|
|
|
*ppszDest = NULL;
|
|
|
|
//
|
|
// Find the length of the original string (in bytes for DBCS)
|
|
//
|
|
|
|
bufferSize = strlen(pszSource) + 1;
|
|
|
|
//
|
|
// Allocate the buffer
|
|
//
|
|
|
|
*ppszDest = new char[bufferSize];
|
|
|
|
if (NULL == *ppszDest)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
}
|
|
|
|
//
|
|
// Copy the string
|
|
//
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
strcpy(*ppszDest, pszSource);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+----------------------------------------------------------------------------
|
|
//
|
|
// -X-StringTo-Y-String functions
|
|
//
|
|
// Synopsis: Convert from a 'T' string to an Ole string
|
|
//
|
|
// Parameters: [pszSource] -- The T string
|
|
// [ppszDest] -- Where to put the Ole string
|
|
//
|
|
// Returns: S_OK if all went well
|
|
//
|
|
// Notes: The implementation of these functions are all identical.
|
|
// C++ polymorphism serves to make sure the right version
|
|
// of CopyString gets called.
|
|
//
|
|
// If *ppszDest is non NULL when this function returns, the
|
|
// caller is responsible for freeing the memory allocated at
|
|
// [*ppszDest]
|
|
//
|
|
// For the XStringToYString functions involving Ole types:
|
|
//
|
|
// If system and OLE use the same string type (e.g UNICODE on
|
|
// NT; CHAR on MAC & Win16) , then this function allocates memory
|
|
// for the new string and does a simple string copy.
|
|
//
|
|
// If UNICODE is NOT defined, but OLE is unicode (as in Win95),
|
|
// a CHAR to WCHAR conversion is performed.
|
|
//
|
|
// If UNICODE is defined, but OLE is NOT unicode (not in any
|
|
// system at present), a WCHAR to CHAR conversion is performed.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
HRESULT TStringToOleString(LPCTSTR pszSource, LPOLESTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
|
|
|
|
HRESULT OleStringToTString(LPCOLESTR pszSource, LPTSTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
|
|
|
|
HRESULT AStringToOleString(LPCSTR pszSource, LPOLESTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
HRESULT OleStringToAString(LPCOLESTR pszSource, LPSTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
|
|
HRESULT AStringToTString(LPCSTR pszSource, LPTSTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
HRESULT TStringToAString(LPCTSTR pszSource, LPSTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
|
|
#ifndef WIN16
|
|
|
|
HRESULT WStringToOleString(LPCWSTR pszSource, LPOLESTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
HRESULT OleStringToWString(LPCOLESTR pszSource, LPWSTR *ppszDest)
|
|
{
|
|
if (NULL == pszSource)
|
|
{
|
|
*ppszDest = NULL;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return CopyString(pszSource, ppszDest);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|