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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
/*++
Module Name:
strutil.cpp
Abstract:
Various string-related utility functions
--*/
#include "pal/corunix.hpp"
#include "pal/thread.hpp"
#include "pal/malloc.hpp"
#include "pal/dbgmsg.h"
SET_DEFAULT_DEBUG_CHANNEL(PAL);
using namespace CorUnix;
/*++
Function:
CPalString::CopyString
Copies a CPalString into a new (empty) instance, allocating buffer space
as necessary
Parameters:
pthr -- thread data for calling thread
psSource -- the string to copy from
--*/
PAL_ERROR
CPalString::CopyString(
CPalThread *pthr,
CPalString *psSource
)
{
PAL_ERROR palError = NO_ERROR;
_ASSERTE(NULL != psSource);
_ASSERTE(NULL == m_pwsz);
_ASSERTE(0 == m_dwStringLength);
_ASSERTE(0 == m_dwMaxLength);
if (0 != psSource->GetStringLength())
{
_ASSERTE(psSource->GetMaxLength() > psSource->GetStringLength());
WCHAR *pwsz = reinterpret_cast<WCHAR*>(
InternalMalloc(psSource->GetMaxLength() * sizeof(WCHAR))
);
if (NULL != pwsz)
{
_ASSERTE(NULL != psSource->GetString());
CopyMemory(
pwsz,
psSource->GetString(),
psSource->GetMaxLength() * sizeof(WCHAR)
);
m_pwsz = pwsz;
m_dwStringLength = psSource->GetStringLength();
m_dwMaxLength = psSource->GetMaxLength();
}
else
{
palError = ERROR_OUTOFMEMORY;
}
}
return palError;
}
/*++
Function:
CPalString::FreeBuffer
Frees the contained string buffer
Parameters:
pthr -- thread data for calling thread
--*/
void
CPalString::FreeBuffer(
CPalThread *pthr
)
{
_ASSERTE(NULL != m_pwsz);
InternalFree(const_cast<WCHAR*>(m_pwsz));
}
/*++
Function:
InternalWszNameFromSzName
Helper function to convert an ANSI string object name parameter to a
unicode string
Parameters:
pthr -- thread data for calling thread
pszName -- the ANSI string name
pwszName -- on success, receives the converted unicode string
cch -- the size of pwszName, in characters
--*/
PAL_ERROR
CorUnix::InternalWszNameFromSzName(
CPalThread *pthr,
LPCSTR pszName,
LPWSTR pwszName,
DWORD cch
)
{
PAL_ERROR palError = NO_ERROR;
_ASSERTE(NULL != pthr);
_ASSERTE(NULL != pszName);
_ASSERTE(NULL != pwszName);
_ASSERTE(0 < cch);
if (MultiByteToWideChar(CP_ACP, 0, pszName, -1, pwszName, cch) == 0)
{
palError = pthr->GetLastError();
if (ERROR_INSUFFICIENT_BUFFER == palError)
{
ERROR("pszName is larger than cch (%d)!\n", palError);
palError = ERROR_FILENAME_EXCED_RANGE;
}
else
{
ERROR("MultiByteToWideChar failure! (error=%d)\n", palError);
palError = ERROR_INVALID_PARAMETER;
}
}
return palError;
}
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