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1776 lines
58 KiB
1776 lines
58 KiB
#if !defined(FUSION_INC_FUSIONBUFFER_H_INCLUDED_)
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#define FUSION_INC_FUSIONBUFFER_H_INCLUDED_
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#pragma once
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#include <stdio.h>
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#include <limits.h>
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#include "arrayhelp.h"
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#include "smartref.h"
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#include "ReturnStrategy.h"
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#include "FusionString.h"
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#include "fusiontrace.h"
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#include "fusionchartraits.h"
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// avoid circular reference to Util.h
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BOOL FusionpIsPathSeparator(WCHAR ch);
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BOOL FusionpIsDriveLetter(WCHAR ch);
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//
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// This header file defines the Fusion character string buffer class.
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// The purpose of this class is to encapsulate common activities that
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// callers want to do with character string buffers and handle it in
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// a generic fashion. A principle tenet of this class is that it is
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// not a string class, although one could consider building a string
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// class upon it.
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//
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// The buffer maintains a certain amount of storage within the buffer
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// object itself, and if more storage is required, a buffer is
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// dynamically allocated from a heap.
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//
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//
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// Like the STL string class, we use a helper class called a "character
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// traits" class to provide the actual code to manipulate character string
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// buffers with a specific encoding.
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//
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// All the members are inline static and with normal optimization turned
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// on, the C++ compiler generates code that fully meets expectations.
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//
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//
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// We provide two implementations: one for Unicode strings, and another
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// template class for MBCS strings. The code page of the string is a
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// template parameter for the MBCS string, so without any extra storage
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// wasted per-instance, code can separately handle MBCS strings which
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// are expected to be in the thread-default windows code page (CP_THREAD_ACP),
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// process-default windows code page (CP_ACP) or even a particular code
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// page (e.g. CP_UTF8).
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//
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//
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// This template class uses a number of non-type template parameters to
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// control things like growth algorithms etc. As a result there are
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// many comparisons of template parameters against well-known constant
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// values, for which the compiler generates warning C4127. We'll turn that
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// warning off.
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//
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#pragma warning(disable:4127)
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#pragma warning(disable:4284)
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#if !defined(FUSION_DEFAULT_STRINGBUFFER_CHARS)
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#define FUSION_DEFAULT_STRINGBUFFER_CHARS (MAX_PATH)
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#endif
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#if !defined(FUSION_DEFAULT_TINY_STRINGBUFFER_CHARS)
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#define FUSION_DEFAULT_TINY_STRINGBUFFER_CHARS (8)
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#endif
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#if !defined(FUSION_DEFAULT_SMALL_STRINGBUFFER_CHARS)
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#define FUSION_DEFAULT_SMALL_STRINGBUFFER_CHARS (64)
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#endif
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#if !defined(FUSION_DEFAULT_MEDIUM_STRINGBUFFER_CHARS)
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#define FUSION_DEFAULT_MEDIUM_STRINGBUFFER_CHARS (128)
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#endif
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enum EIfNoExtension
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{
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eAddIfNoExtension,
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eDoNothingIfNoExtension,
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eErrorIfNoExtension
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};
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enum ECaseConversionDirection
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{
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eConvertToUpperCase,
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eConvertToLowerCase
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};
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enum EPreserveContents
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{
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ePreserveBufferContents,
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eDoNotPreserveBufferContents
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};
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template <typename TCharTraits> class CGenericStringBufferAccessor;
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template <typename TCharTraits> class CGenericBaseStringBuffer
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{
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friend TCharTraits;
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friend CGenericStringBufferAccessor<TCharTraits>;
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//
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// These two are to induce build breaks on people doing sb1 = sb2
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//
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CGenericBaseStringBuffer& operator=(PCWSTR OtherString);
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CGenericBaseStringBuffer& operator=(CGenericBaseStringBuffer &rOtherString);
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public:
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typedef TCharTraits::TChar TChar;
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typedef TCharTraits::TMutableString TMutableString;
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typedef TCharTraits::TConstantString TConstantString;
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typedef CGenericStringBufferAccessor<TCharTraits> TAccessor;
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inline static TChar NullCharacter() { return TCharTraits::NullCharacter(); }
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inline static bool IsNullCharacter(TChar ch) { return TCharTraits::IsNullCharacter(ch); }
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inline static TChar PreferredPathSeparator() { return TCharTraits::PreferredPathSeparator(); }
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inline static TConstantString PreferredPathSeparatorString() { return TCharTraits::PreferredPathSeparatorString(); }
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inline static TConstantString PathSeparators() { return TCharTraits::PathSeparators(); }
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inline static bool IsPathSeparator(TChar ch) { return TCharTraits::IsPathSeparator(ch); }
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inline static TConstantString DotString() { return TCharTraits::DotString(); }
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inline static SIZE_T DotStringCch() { return TCharTraits::DotStringCch(); }
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inline static TChar DotChar() { return TCharTraits::DotChar(); }
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protected:
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// You may not instantiate an instance of this class directly; you need to provide a derived
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// class which adds allocation/deallocation particulars.
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CGenericBaseStringBuffer() : m_prgchBuffer(NULL), m_cchBuffer(0), m_cAttachedAccessors(0), m_cch(0)
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{
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}
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//
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// Note that somewhat counter-intuitively, there is neither an assignment operator,
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// copy constructor or constructor taking a TConstantString. This is necessary
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// because such a constructor would need to perform a dynamic allocation
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// if the path passed in were longer than nInlineChars which could fail and
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// since we do not throw exceptions, constructors may not fail. Instead the caller
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// must just perform the default construction and then use the Assign() member
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// function, remembering of course to check its return status.
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//
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~CGenericBaseStringBuffer()
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{
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ASSERT_NTC(m_cAttachedAccessors == 0);
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}
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inline void IntegrityCheck() const
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{
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#if DBG
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ASSERT_NTC(m_cch < m_cchBuffer);
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#endif // DBG
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}
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// Derived constructors should call this to get the initial buffer pointers set up.
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inline void InitializeInlineBuffer()
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{
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ASSERT_NTC(m_prgchBuffer == NULL);
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ASSERT_NTC(m_cchBuffer == 0);
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m_prgchBuffer = this->GetInlineBuffer();
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m_cchBuffer = this->GetInlineBufferCch();
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}
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VOID AttachAccessor(TAccessor *)
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{
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::InterlockedIncrement(&m_cAttachedAccessors);
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}
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VOID DetachAccessor(TAccessor *)
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{
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::InterlockedDecrement(&m_cAttachedAccessors);
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}
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virtual BOOL Win32AllocateBuffer(SIZE_T cch, TMutableString &rpsz) const = 0;
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virtual VOID DeallocateBuffer(TMutableString sz) const = 0;
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virtual TMutableString GetInlineBuffer() const = 0;
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virtual SIZE_T GetInlineBufferCch() const = 0;
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public:
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BOOL Win32Assign(PCWSTR psz, SIZE_T cchIn)
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{
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FN_PROLOG_WIN32
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ASSERT(static_cast<SSIZE_T>(cchIn) >= 0);
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this->IntegrityCheck();
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SIZE_T cchIncludingTrailingNull;
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// it would seem innocuous to allow assigns that don't resize the buffer to not
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// invalidate accessors, but that makes finding such bugs subject to even more
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// strenuous coverage problems than this simple error. The simple rule is that
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// you should not have an accessor attached to a string buffer when you use
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// any of member functions that may mutate the value.
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INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
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IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(psz, cchIn, cchIncludingTrailingNull));
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// Only force the buffer to be dynamically grown if the new contents do not
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// fit in the old buffer.
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if (cchIncludingTrailingNull > m_cchBuffer)
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(cchIncludingTrailingNull, ePreserveBufferContents));
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IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(m_prgchBuffer, m_cchBuffer, psz, cchIn));
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ASSERT(cchIncludingTrailingNull <= m_cchBuffer);
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ASSERT((cchIncludingTrailingNull == 0) || this->IsNullCharacter(m_prgchBuffer[cchIncludingTrailingNull - 1]));
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// cch was the buffer size we needed (including the trailing null); we don't need the trailing
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// null any more...
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m_cch = cchIncludingTrailingNull - 1;
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FN_EPILOG
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}
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BOOL Win32Assign(PCSTR psz, SIZE_T cchIn)
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{
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FN_PROLOG_WIN32
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ASSERT(static_cast<SSIZE_T>(cchIn) >= 0);
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this->IntegrityCheck();
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SIZE_T cchIncludingTrailingNull;
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// it would seem innocuous to allow assigns that don't resize the buffer to not
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// invalidate accessors, but that makes finding such bugs subject to even more
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// strenuous coverage problems than this simple error. The simple rule is that
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// you should not have an accessor attached to a string buffer when you use
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// any of member functions that may mutate the value.
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INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
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IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(psz, cchIn, cchIncludingTrailingNull));
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// Only force the buffer to be dynamically grown if the new contents do not
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// fit in the old buffer.
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if (cchIncludingTrailingNull > m_cchBuffer)
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(cchIncludingTrailingNull, ePreserveBufferContents));
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IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(m_prgchBuffer, m_cchBuffer, psz, cchIn));
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ASSERT(cchIncludingTrailingNull <= m_cchBuffer);
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ASSERT((cchIncludingTrailingNull == 0) || this->IsNullCharacter(m_prgchBuffer[cchIncludingTrailingNull - 1]));
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// cch was the buffer size we needed (including the trailing null); we don't need the trailing
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// null any more...
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m_cch = cchIncludingTrailingNull - 1;
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FN_EPILOG
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}
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BOOL Win32Assign(const UNICODE_STRING* NtString)
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{
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return Win32Assign(NtString->Buffer, RTL_STRING_GET_LENGTH_CHARS(NtString));
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}
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BOOL Win32Assign(const ANSI_STRING* NtString)
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{
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return Win32Assign(NtString->Buffer, RTL_STRING_GET_LENGTH_CHARS(NtString));
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}
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BOOL Win32Assign(const CGenericBaseStringBuffer &r) { return this->Win32Assign(r, r.Cch()); }
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BOOL Win32AssignWVa(SIZE_T cStrings, va_list ap)
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{
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this->IntegrityCheck();
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BOOL fSuccess = FALSE;
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FN_TRACE_WIN32(fSuccess);
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TMutableString pszCursor;
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SIZE_T cchIncludingTrailingNull = 1; // leave space for trailing null...
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SIZE_T cchTemp;
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SIZE_T i;
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va_list ap2 = ap;
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// it would seem innocuous to allow assigns that don't resize the buffer to not
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// invalidate accessors, but that makes finding such bugs subject to even more
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// strenuous coverage problems than this simple error. The simple rule is that
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// you should not have an accessor attached to a string buffer when you use
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// any of member functions that may mutate the value.
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INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
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for (i=0; i<cStrings; i++)
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{
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PCWSTR psz = va_arg(ap, PCWSTR);
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INT cchArg = va_arg(ap, INT);
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SIZE_T cchThis = (cchArg < 0) ? ((psz != NULL) ? ::wcslen(psz) : 0) : static_cast<SIZE_T>(cchArg);
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SIZE_T cchRequired;
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IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(psz, cchThis, cchRequired));
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ASSERT((cchRequired != 0) || (cchThis == 0));
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cchIncludingTrailingNull += (cchRequired - 1);
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}
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(cchIncludingTrailingNull, eDoNotPreserveBufferContents));
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pszCursor = m_prgchBuffer;
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cchTemp = cchIncludingTrailingNull;
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for (i=0; i<cStrings; i++)
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{
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PCWSTR psz = va_arg(ap2, PCWSTR);
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INT cchArg = va_arg(ap2, INT);
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SIZE_T cchThis = (cchArg < 0) ? ((psz != NULL) ? ::wcslen(psz) : 0) : static_cast<SIZE_T>(cchArg);
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IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBufferAndAdvanceCursor(pszCursor, cchTemp, psz, cchThis));
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}
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*pszCursor++ = this->NullCharacter();
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ASSERT(cchTemp == 1);
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ASSERT(static_cast<SIZE_T>(pszCursor - m_prgchBuffer) == cchIncludingTrailingNull);
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m_cch = (cchIncludingTrailingNull - 1);
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FN_EPILOG
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}
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BOOL Win32AssignW(ULONG cStrings, ...)
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{
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this->IntegrityCheck();
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BOOL fSuccess = FALSE;
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FN_TRACE_WIN32(fSuccess);
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va_list ap;
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va_start(ap, cStrings);
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IFW32FALSE_EXIT(this->Win32AssignWVa(cStrings, ap));
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fSuccess = TRUE;
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Exit:
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va_end(ap);
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return fSuccess;
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}
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BOOL Win32AssignFill(TChar ch, SIZE_T cch)
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{
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FN_PROLOG_WIN32
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TMutableString Cursor;
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ASSERT(static_cast<SSIZE_T>(cch) >= 0);
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(cch + 1, eDoNotPreserveBufferContents));
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Cursor = m_prgchBuffer;
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while (cch > 0)
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{
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*Cursor++ = ch;
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cch--;
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}
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*Cursor = NullCharacter();
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m_cch = (Cursor - m_prgchBuffer);
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FN_EPILOG
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}
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BOOL Win32Append(const UNICODE_STRING *pus) { return this->Win32Append(pus->Buffer, RTL_STRING_GET_LENGTH_CHARS(pus)); }
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BOOL Win32Append(PCWSTR sz, SIZE_T cchIn)
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{
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this->IntegrityCheck();
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BOOL fSuccess = FALSE;
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FN_TRACE_WIN32(fSuccess);
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ASSERT(static_cast<SSIZE_T>(cchIn) >= 0);
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SIZE_T cchIncludingTrailingNull; // note that cch will include space for a tailing null character
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// it would seem innocuous to allow assigns that don't resize the buffer to not
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// invalidate accessors, but that makes finding such bugs subject to even more
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|
// strenuous coverage problems than this simple error. The simple rule is that
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// you should not have an accessor attached to a string buffer when you use
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// any of member functions that may mutate the value.
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INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
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IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(sz, cchIn, cchIncludingTrailingNull));
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// Bypass all this junk if the string to append is empty.
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if (cchIncludingTrailingNull > 1)
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{
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + cchIncludingTrailingNull, ePreserveBufferContents));
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IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(&m_prgchBuffer[m_cch], m_cchBuffer - m_cch, sz, cchIn));
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m_cch += (cchIncludingTrailingNull - 1);
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}
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fSuccess = TRUE;
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Exit:
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return fSuccess;
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}
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BOOL Win32Append(PCSTR sz, SIZE_T cchIn)
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{
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this->IntegrityCheck();
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BOOL fSuccess = FALSE;
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FN_TRACE_WIN32(fSuccess);
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ASSERT(static_cast<SSIZE_T>(cchIn) >= 0);
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SIZE_T cchIncludingTrailingNull;
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|
// it would seem innocuous to allow assigns that don't resize the buffer to not
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|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
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INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
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IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(sz, cchIn, cchIncludingTrailingNull));
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// Bypass all this junk if the string to append is empty.
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if (cchIncludingTrailingNull > 1)
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{
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + cchIncludingTrailingNull, ePreserveBufferContents));
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IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(&m_prgchBuffer[m_cch], m_cchBuffer - m_cch, sz, cchIn));
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m_cch += (cchIncludingTrailingNull - 1);
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this->IntegrityCheck();
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}
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FN_EPILOG
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}
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BOOL Win32Append(const CGenericBaseStringBuffer &r) { return this->Win32Append(r, r.Cch()); }
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BOOL Win32Append(WCHAR wch) { WCHAR rgwch[1] = { wch }; return this->Win32Append(rgwch, 1); }
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BOOL Win32AppendFill(TChar ch, SIZE_T cch)
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{
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FN_PROLOG_WIN32
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ASSERT(static_cast<SSIZE_T>(cch) >= 0);
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TMutableString Cursor;
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IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + cch + 1, ePreserveBufferContents));
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Cursor = m_prgchBuffer + m_cch;
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while (cch > 0)
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{
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*Cursor++ = ch;
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cch--;
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}
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*Cursor = NullCharacter();
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m_cch = Cursor - m_prgchBuffer;
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FN_EPILOG
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}
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BOOL Win32Prepend(const CGenericBaseStringBuffer& other ) { return this->Win32Prepend(other, other.Cch()); }
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BOOL Win32Prepend(TConstantString sz, SIZE_T cchIn)
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{
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this->IntegrityCheck();
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BOOL fSuccess = FALSE;
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FN_TRACE_WIN32(fSuccess);
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ASSERT(static_cast<SSIZE_T>(cchIn) >= 0);
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SIZE_T cchIncludingTrailingNull; // note that cch will include space for a tailing null character
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|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
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|
|
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if ( m_cch == 0 )
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{
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IFW32FALSE_EXIT(this->Win32Assign(sz, cchIn));
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}
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else
|
|
{
|
|
//
|
|
// Enlarge the buffer, move the current data to past where the new data will need
|
|
// to go, copy in the new data, and place the trailing null.
|
|
//
|
|
TChar SavedChar = m_prgchBuffer[0];
|
|
|
|
IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(sz, cchIn, cchIncludingTrailingNull));
|
|
IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + cchIncludingTrailingNull, ePreserveBufferContents));
|
|
|
|
// Move current buffer "up"
|
|
memmove(m_prgchBuffer + ( cchIncludingTrailingNull - 1), m_prgchBuffer, (m_cch + 1) * sizeof(TChar));
|
|
|
|
// Copy from the source string into the buffer.
|
|
IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(
|
|
this->m_prgchBuffer,
|
|
this->m_cchBuffer,
|
|
sz,
|
|
cchIn));
|
|
|
|
m_prgchBuffer[cchIncludingTrailingNull - 1] = SavedChar;
|
|
m_cch += cchIncludingTrailingNull - 1;
|
|
}
|
|
#if 0
|
|
IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(sz, cchIn, cchIncludingTrailingNull));
|
|
|
|
|
|
|
|
// Bypass all this junk if the string to prepend is empty.
|
|
if (cchIncludingTrailingNull > 1)
|
|
{
|
|
if (m_cch == 0)
|
|
{
|
|
// Empty string, simple operation
|
|
IFW32FALSE_EXIT(this->Win32Assign(sz, cchIn));
|
|
}
|
|
else
|
|
{
|
|
// Otherwise, resize the buffer and
|
|
//
|
|
TChar chTemp = m_prgchBuffer[0];
|
|
IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + cchIncludingTrailingNull, ePreserveBufferContents));
|
|
memmove(&m_prgchBuffer[cchIncludingTrailingNull - 1], &m_prgchBuffer[0], (m_cch + 1) * sizeof(TChar));
|
|
IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(&m_prgchBuffer[0], m_cchBuffer, sz, cchIn));
|
|
// Restore old first character of the string overwritten by the null
|
|
m_prgchBuffer[cchIncludingTrailingNull - 1] = chTemp;
|
|
m_cch += (cchIncludingTrailingNull - 1);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
FN_EPILOG
|
|
}
|
|
|
|
BOOL Win32Prepend(TChar ch)
|
|
{
|
|
FN_PROLOG_WIN32
|
|
|
|
IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + 1 + 1, ePreserveBufferContents));
|
|
|
|
// move buffer ahead, including null
|
|
memmove(m_prgchBuffer + 1, m_prgchBuffer, (m_cch + 1) * sizeof(TChar));
|
|
m_prgchBuffer[0] = ch;
|
|
m_cch++;
|
|
|
|
FN_EPILOG
|
|
}
|
|
|
|
operator TConstantString() const { this->IntegrityCheck(); return m_prgchBuffer; }
|
|
|
|
inline VOID Clear(bool fFreeStorage = false)
|
|
{
|
|
FN_TRACE();
|
|
|
|
this->IntegrityCheck();
|
|
|
|
// You can't free the storage if there's an attached accessor
|
|
ASSERT(!fFreeStorage || m_cAttachedAccessors == 0);
|
|
|
|
if (fFreeStorage && (m_cAttachedAccessors == 0))
|
|
{
|
|
if (m_prgchBuffer != NULL)
|
|
{
|
|
const TMutableString pszInlineBuffer = this->GetInlineBuffer();
|
|
|
|
if (m_prgchBuffer != pszInlineBuffer)
|
|
{
|
|
this->DeallocateBuffer(m_prgchBuffer);
|
|
m_prgchBuffer = pszInlineBuffer;
|
|
m_cchBuffer = this->GetInlineBufferCch();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (m_prgchBuffer != NULL)
|
|
m_prgchBuffer[0] = this->NullCharacter();
|
|
|
|
m_cch = 0;
|
|
}
|
|
|
|
|
|
BOOL Win32ConvertCase( ECaseConversionDirection direction )
|
|
{
|
|
#if !FUSION_WIN
|
|
return FALSE;
|
|
#else
|
|
FN_PROLOG_WIN32
|
|
|
|
this->IntegrityCheck();
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
TMutableString Cursor = m_prgchBuffer;
|
|
|
|
for ( ULONG ul = 0; ul < this->Cch(); ul++ )
|
|
{
|
|
if ( direction == eConvertToUpperCase )
|
|
*Cursor = RtlUpcaseUnicodeChar(*Cursor);
|
|
else
|
|
*Cursor = RtlDowncaseUnicodeChar(*Cursor);
|
|
|
|
Cursor++;
|
|
}
|
|
|
|
FN_EPILOG
|
|
#endif
|
|
}
|
|
|
|
BOOL Win32Compare(TConstantString szCandidate, SIZE_T cchCandidate, StringComparisonResult &rscrOut, bool fCaseInsensitive) const
|
|
{
|
|
this->IntegrityCheck();
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
IFW32FALSE_EXIT(TCharTraits::Win32CompareStrings(rscrOut, m_prgchBuffer, m_cch, szCandidate, cchCandidate, fCaseInsensitive));
|
|
FN_EPILOG
|
|
}
|
|
|
|
BOOL Win32Equals(TConstantString szCandidate, SIZE_T cchCandidate, bool &rfMatches, bool fCaseInsensitive) const
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
IFW32FALSE_EXIT(
|
|
TCharTraits::Win32EqualStrings(
|
|
rfMatches,
|
|
m_prgchBuffer,
|
|
m_cch,
|
|
szCandidate,
|
|
cchCandidate,
|
|
fCaseInsensitive));
|
|
FN_EPILOG
|
|
}
|
|
|
|
BOOL Win32Equals(const CGenericBaseStringBuffer &r, bool &rfMatches, bool fCaseInsensitive) const
|
|
{
|
|
return this->Win32Equals(r, r.Cch(), rfMatches, fCaseInsensitive);
|
|
}
|
|
|
|
SIZE_T GetBufferCch() const { this->IntegrityCheck(); return m_cchBuffer; }
|
|
INT GetBufferCchAsINT() const { this->IntegrityCheck(); if (m_cchBuffer > INT_MAX) return INT_MAX; return static_cast<INT>(m_cchBuffer); }
|
|
DWORD GetBufferCchAsDWORD() const { this->IntegrityCheck(); if (m_cchBuffer > DWORD_MAX) return DWORD_MAX; return static_cast<DWORD>(m_cchBuffer); }
|
|
|
|
SIZE_T GetBufferCb() const { this->IntegrityCheck(); return m_cchBuffer * sizeof(TChar); }
|
|
INT GetBufferCbAsINT() const { this->IntegrityCheck(); if ((m_cchBuffer * sizeof(TChar)) > INT_MAX) return INT_MAX; return static_cast<INT>(m_cchBuffer * sizeof(TChar)); }
|
|
DWORD GetBufferCbAsDWORD() const { this->IntegrityCheck(); if ((m_cchBuffer * sizeof(TChar)) > DWORD_MAX) return DWORD_MAX; return static_cast<DWORD>(m_cchBuffer * sizeof(TChar)); }
|
|
|
|
bool ContainsCharacter(WCHAR wch) const
|
|
{
|
|
this->IntegrityCheck();
|
|
return TCharTraits::ContainsCharacter(m_prgchBuffer, m_cch, wch);
|
|
}
|
|
|
|
BOOL Win32ResizeBuffer(
|
|
SIZE_T cch,
|
|
EPreserveContents epc
|
|
)
|
|
{
|
|
FN_PROLOG_WIN32
|
|
|
|
this->IntegrityCheck();
|
|
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
PARAMETER_CHECK((epc == ePreserveBufferContents) || (epc == eDoNotPreserveBufferContents));
|
|
|
|
if (cch > m_cchBuffer)
|
|
{
|
|
TMutableString prgchBufferNew = NULL;
|
|
|
|
IFW32FALSE_EXIT(this->Win32AllocateBuffer(cch, prgchBufferNew));
|
|
|
|
if (epc == ePreserveBufferContents)
|
|
{
|
|
// We assume that the buffer is/was null-terminated.
|
|
IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(prgchBufferNew, cch, m_prgchBuffer, m_cch));
|
|
}
|
|
else
|
|
{
|
|
m_prgchBuffer[0] = this->NullCharacter();
|
|
m_cch = 0;
|
|
}
|
|
|
|
if ((m_prgchBuffer != NULL) && (m_prgchBuffer != this->GetInlineBuffer()))
|
|
this->DeallocateBuffer(m_prgchBuffer);
|
|
|
|
m_prgchBuffer = prgchBufferNew;
|
|
m_cchBuffer = cch;
|
|
}
|
|
|
|
FN_EPILOG
|
|
}
|
|
|
|
BOOL Win32Format(TConstantString pszFormat, ...)
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
va_list args;
|
|
va_start(args, pszFormat);
|
|
BOOL f = this->Win32FormatV(pszFormat, args);
|
|
va_end(args);
|
|
return f;
|
|
}
|
|
|
|
BOOL Win32FormatAppend(TConstantString pszFormat, ...)
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
va_list args;
|
|
va_start(args, pszFormat);
|
|
BOOL f = Win32FormatAppendV(pszFormat, args);
|
|
va_end(args);
|
|
return f;
|
|
}
|
|
|
|
BOOL Win32FormatV(TConstantString pszFormat, va_list args)
|
|
{
|
|
BOOL fSuccess = FALSE;
|
|
this->Clear();
|
|
fSuccess = Win32FormatAppendV(pszFormat, args);
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32FormatAppendV(TConstantString pszFormat, va_list args)
|
|
{
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
SIZE_T cchRequiredBufferSize = 0;
|
|
INT i = 0;
|
|
|
|
this->IntegrityCheck();
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
#if 0 // ntdll.dll dependency
|
|
IFW32FALSE_EXIT(TCharTraits::Win32GetRequiredBufferSizeInCharsForFormatV(pszFormat, args, cchRequiredBufferSize));
|
|
IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + cchRequiredBufferSize + 1, ePreserveBufferContents));
|
|
#endif
|
|
|
|
m_prgchBuffer[m_cchBuffer - 1] = this->NullCharacter();
|
|
i = TCharTraits::FormatV(m_prgchBuffer + m_cch, m_cchBuffer - 1 - m_cch, pszFormat, args);
|
|
ASSERT(m_prgchBuffer[m_cchBuffer - 1] == NullCharacter());
|
|
fSuccess = (i >= 0);
|
|
if ( fSuccess )
|
|
m_cch += i;
|
|
else
|
|
{
|
|
//
|
|
// Sprintf doesn't touch last error. The fn tracer
|
|
// will fail an assertion if we return false but FusionpGetLastWin32Error()==NOERROR
|
|
//
|
|
ORIGINATE_WIN32_FAILURE_AND_EXIT(snwprintf_MaybeBufferTooSmall, ERROR_INVALID_PARAMETER);
|
|
}
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
DWORD GetCchAsDWORD() const
|
|
{
|
|
this->IntegrityCheck();
|
|
if (m_cch > MAXDWORD)
|
|
return MAXDWORD;
|
|
else
|
|
return (DWORD)m_cch;
|
|
}
|
|
|
|
SIZE_T Cch() const
|
|
{
|
|
this->IntegrityCheck();
|
|
return m_cch;
|
|
}
|
|
|
|
BOOL IsEmpty() const
|
|
{
|
|
this->IntegrityCheck();
|
|
return m_prgchBuffer[0] == 0;
|
|
}
|
|
|
|
BOOL Win32EnsureTrailingChar(WCHAR ch)
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
if ((m_cch == 0) || (m_prgchBuffer[m_cch - 1] != ch))
|
|
{
|
|
IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + 1 + 1, ePreserveBufferContents));
|
|
m_prgchBuffer[m_cch++] = ch;
|
|
m_prgchBuffer[m_cch] = this->NullCharacter();
|
|
}
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32EnsureTrailingPathSeparator()
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
if ((m_cch == 0) || !TCharTraits::IsPathSeparator(m_prgchBuffer[m_cch - 1]))
|
|
{
|
|
IFW32FALSE_EXIT(this->Win32ResizeBuffer(m_cch + 1 + 1, ePreserveBufferContents));
|
|
m_prgchBuffer[m_cch++] = this->PreferredPathSeparator();
|
|
m_prgchBuffer[m_cch] = this->NullCharacter();
|
|
}
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32AppendPathElement(PCWSTR pathElement, SIZE_T cchPathElement)
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
IFW32FALSE_EXIT(this->Win32EnsureTrailingPathSeparator());
|
|
IFW32FALSE_EXIT(this->Win32Append(pathElement, cchPathElement));
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32AppendPathElement(const UNICODE_STRING *pus) { return this->Win32AppendPathElement(pus->Buffer, RTL_STRING_GET_LENGTH_CHARS(pus)); }
|
|
BOOL Win32AppendPathElement(const CGenericBaseStringBuffer &r) { return this->Win32AppendPathElement(r, r.Cch()); }
|
|
|
|
BOOL Win32AppendPathElement(PCSTR pathElement, SIZE_T cchPathElement)
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
IFW32FALSE_EXIT(this->Win32EnsureTrailingPathSeparator());
|
|
IFW32FALSE_EXIT(this->Win32Append(pathElement, cchPathElement));
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
VOID Left(SIZE_T newLength)
|
|
{
|
|
FN_TRACE();
|
|
|
|
this->IntegrityCheck();
|
|
|
|
ASSERT(newLength <= m_cch);
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
// Note also that while the current implementation does not change the buffer
|
|
// pointer, this is just a shortcut in the implementation; if a call to Left()
|
|
// were to make the string short enough to fit in the inline buffer, we should
|
|
// copy it to the inline buffer and deallocate the dynamic one.
|
|
ASSERT(m_cAttachedAccessors == 0);
|
|
|
|
if (m_cchBuffer > newLength)
|
|
{
|
|
m_prgchBuffer[newLength] = this->NullCharacter();
|
|
}
|
|
|
|
m_cch = newLength;
|
|
}
|
|
|
|
TConstantString Begin() const
|
|
{
|
|
this->IntegrityCheck();
|
|
return m_prgchBuffer;
|
|
}
|
|
|
|
TConstantString End() const
|
|
{
|
|
this->IntegrityCheck();
|
|
return &m_prgchBuffer[m_cch];
|
|
}
|
|
|
|
// should factor this for reuse in CchWithoutLastPathElement
|
|
SIZE_T CchWithoutTrailingPathSeparators() const
|
|
{
|
|
this->IntegrityCheck();
|
|
// Until GetLength is constant time, optimize its use..
|
|
SIZE_T length = m_cch;
|
|
if (length > 0)
|
|
{
|
|
length -= ::StringReverseSpan(&*m_prgchBuffer, &*m_prgchBuffer + length, TCharTraits::PathSeparators());
|
|
}
|
|
return length;
|
|
}
|
|
|
|
BOOL RestoreNextPathElement()
|
|
{
|
|
SIZE_T index;
|
|
|
|
index = m_cch;
|
|
m_prgchBuffer[index++] = L'\\'; // replace trailing NULL with '\'
|
|
|
|
while ((index < m_cchBuffer) && (!this->IsNullCharacter(m_prgchBuffer[index])))
|
|
{
|
|
if (::FusionpIsPathSeparator(m_prgchBuffer[index]))
|
|
{
|
|
this->Left(index);
|
|
return TRUE;
|
|
}
|
|
|
|
index++;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
bool HasTrailingPathSeparator() const
|
|
{
|
|
FN_TRACE();
|
|
|
|
this->IntegrityCheck();
|
|
|
|
if ((m_cch != 0) && TCharTraits::IsPathSeparator(m_prgchBuffer[m_cch - 1]))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
VOID RemoveTrailingPathSeparators()
|
|
{
|
|
FN_TRACE();
|
|
|
|
this->IntegrityCheck();
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
// Note also that while the current implementation does not change the buffer
|
|
// pointer, this is just a shortcut in the implementation; if a call to Left()
|
|
// were to make the string short enough to fit in the inline buffer, we should
|
|
// copy it to the inline buffer and deallocate the dynamic one.
|
|
ASSERT(m_cAttachedAccessors == 0);
|
|
|
|
while ((m_cch != 0) && TCharTraits::IsPathSeparator(m_prgchBuffer[m_cch - 1]))
|
|
m_cch--;
|
|
|
|
m_prgchBuffer[m_cch] = this->NullCharacter();
|
|
}
|
|
|
|
VOID Right( SIZE_T cchRightCount )
|
|
{
|
|
FN_TRACE();
|
|
|
|
this->IntegrityCheck();
|
|
|
|
ASSERT(m_cAttachedAccessors == 0);
|
|
ASSERT(cchRightCount <= m_cch);
|
|
|
|
if (cchRightCount < m_cch)
|
|
{
|
|
::memmove(
|
|
m_prgchBuffer,
|
|
&m_prgchBuffer[m_cch - cchRightCount],
|
|
(cchRightCount + 1)*sizeof(TCharTraits::TChar));
|
|
m_cch = cchRightCount;
|
|
}
|
|
}
|
|
|
|
VOID RemoveLeadingPathSeparators()
|
|
{
|
|
this->Right(m_cch - wcsspn(m_prgchBuffer, TCharTraits::PathSeparators()));
|
|
}
|
|
|
|
BOOL Win32StripToLastPathElement()
|
|
{
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
this->Right(m_cch - this->CchWithoutLastPathElement());
|
|
this->RemoveLeadingPathSeparators();
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32GetFirstPathElement( CGenericBaseStringBuffer &sbDestination, BOOL bRemoveAsWell = FALSE )
|
|
{
|
|
FN_PROLOG_WIN32
|
|
|
|
this->IntegrityCheck();
|
|
|
|
IFW32FALSE_EXIT( sbDestination.Win32Assign( m_prgchBuffer, this->CchOfFirstPathElement() ) );
|
|
sbDestination.RemoveLeadingPathSeparators();
|
|
|
|
if ( bRemoveAsWell )
|
|
IFW32FALSE_EXIT(this->Win32RemoveFirstPathElement());
|
|
|
|
FN_EPILOG
|
|
}
|
|
|
|
BOOL Win32GetFirstPathElement( CGenericBaseStringBuffer &sbDestination ) const
|
|
{
|
|
BOOL bSuccess = FALSE;
|
|
|
|
this->IntegrityCheck();
|
|
|
|
if ( sbDestination.Win32Assign( m_prgchBuffer, CchOfFirstPathElement() ) )
|
|
{
|
|
sbDestination.RemoveLeadingPathSeparators();
|
|
bSuccess = TRUE;
|
|
}
|
|
|
|
return bSuccess;
|
|
}
|
|
|
|
BOOL Win32StripToFirstPathElement()
|
|
{
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
this->IntegrityCheck();
|
|
|
|
this->Left(this->CchOfFirstPathElement());
|
|
this->RemoveLeadingPathSeparators();
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32RemoveFirstPathElement()
|
|
{
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
IntegrityCheck();
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
this->Right(this->CchWithoutFirstPathElement());
|
|
this->RemoveLeadingPathSeparators();
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
SIZE_T CchOfFirstPathElement() const
|
|
{
|
|
return Cch() - CchWithoutFirstPathElement();
|
|
}
|
|
|
|
SIZE_T CchWithoutFirstPathElement() const
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
SIZE_T cch = m_cch;
|
|
|
|
//
|
|
// We just look for the first path element, which can also be the drive
|
|
// letter!
|
|
//
|
|
if ( cch != 0 )
|
|
{
|
|
cch -= wcscspn( m_prgchBuffer, PathSeparators() );
|
|
}
|
|
|
|
return cch;
|
|
}
|
|
|
|
BOOL Win32GetLastPathElement(CGenericBaseStringBuffer &sbDestination) const
|
|
{
|
|
BOOL bSuccess = FALSE;
|
|
FN_TRACE_WIN32(bSuccess);
|
|
this->IntegrityCheck();
|
|
IFW32FALSE_EXIT(sbDestination.Win32Assign(m_prgchBuffer, m_cch));
|
|
IFW32FALSE_EXIT(sbDestination.Win32StripToLastPathElement());
|
|
bSuccess = TRUE;
|
|
Exit:
|
|
return bSuccess;
|
|
}
|
|
|
|
SIZE_T CchWithoutLastPathElement() const
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
// Paths are assumed to be
|
|
// "\\machine\share"
|
|
// or
|
|
// "x:\"
|
|
// Worry about alternate NTFS streams at a later date.
|
|
// Worry about NT paths at a later date.
|
|
// Worry about URLs at a later date.
|
|
const SIZE_T length = m_cch;
|
|
SIZE_T newLength = length;
|
|
if (length > 0)
|
|
{
|
|
if ((length == 3) &&
|
|
(m_prgchBuffer[1] == ':') &&
|
|
::FusionpIsPathSeparator(m_prgchBuffer[2]) &&
|
|
::FusionpIsDriveLetter(m_prgchBuffer[0]))
|
|
{
|
|
// c:\ => empty string
|
|
newLength = 0;
|
|
}
|
|
else
|
|
{
|
|
// Remove trailing path seperators here, in the future when it is not risky.
|
|
//newLength -= ::StringReverseSpan(&*m_prgchBuffer, &*m_prgchBuffer + newLength, PathSeparators());
|
|
newLength -= ::StringReverseComplementSpan(&*m_prgchBuffer, &*m_prgchBuffer + newLength, PathSeparators());
|
|
newLength -= ::StringReverseSpan(&*m_prgchBuffer, &*m_prgchBuffer + newLength, PathSeparators());
|
|
if ((newLength == 2) && // "c:"
|
|
(length >= 4) && // "c:\d"
|
|
(m_prgchBuffer[1] == ':') &&
|
|
::FusionpIsPathSeparator(m_prgchBuffer[2]) &&
|
|
::FusionpIsDriveLetter(m_prgchBuffer[0]))
|
|
{
|
|
++newLength; // put back the slash in "c:\"
|
|
}
|
|
}
|
|
}
|
|
return newLength;
|
|
}
|
|
|
|
VOID RemoveLastPathElement()
|
|
{
|
|
FN_TRACE();
|
|
|
|
this->IntegrityCheck();
|
|
|
|
// it would seem innocuous to allow assigns that don't resize the buffer to not
|
|
// invalidate accessors, but that makes finding such bugs subject to even more
|
|
// strenuous coverage problems than this simple error. The simple rule is that
|
|
// you should not have an accessor attached to a string buffer when you use
|
|
// any of member functions that may mutate the value.
|
|
// Note also that while the current implementation does not change the buffer
|
|
// pointer, this is just a shortcut in the implementation; if a call to Left()
|
|
// were to make the string short enough to fit in the inline buffer, we should
|
|
// copy it to the inline buffer and deallocate the dynamic one.
|
|
ASSERT(m_cAttachedAccessors == 0);
|
|
|
|
this->Left(this->CchWithoutLastPathElement());
|
|
}
|
|
|
|
BOOL Win32ClearPathExtension()
|
|
{
|
|
//
|
|
// Replace the final '.' with a \0 to clear the path extension
|
|
//
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32( fSuccess );
|
|
|
|
IntegrityCheck();
|
|
|
|
TMutableString dot;
|
|
|
|
const TMutableString end = End();
|
|
|
|
IFW32FALSE_EXIT(TCharTraits::Win32ReverseFind(dot, m_prgchBuffer, m_cch, this->DotChar(), false));
|
|
|
|
if((dot != end) && (dot != NULL))
|
|
{
|
|
*dot = this->NullCharacter();
|
|
m_cch = (dot - m_prgchBuffer);
|
|
}
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32GetPathExtension(CGenericBaseStringBuffer<TCharTraits> &destination) const
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
SIZE_T cchExtension;
|
|
|
|
const TConstantString start = Begin();
|
|
const TConstantString end = End();
|
|
|
|
cchExtension = StringReverseComplementSpan( &(*start), &(*end), L"." );
|
|
IFW32FALSE_EXIT(destination.Win32Assign( static_cast<PCWSTR>(*this) + ( m_cch - cchExtension ), cchExtension));
|
|
|
|
fSuccess = TRUE;
|
|
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
// newExtension can start with a dot or not
|
|
BOOL Win32ChangePathExtension(PCWSTR newExtension, SIZE_T cchExtension, EIfNoExtension e)
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
TMutableString end;
|
|
TMutableString dot;
|
|
|
|
INTERNAL_ERROR_CHECK(m_cAttachedAccessors == 0);
|
|
|
|
PARAMETER_CHECK((e == eAddIfNoExtension) ||
|
|
(e == eDoNothingIfNoExtension) ||
|
|
(e == eErrorIfNoExtension));
|
|
|
|
if ((cchExtension != 0) && (newExtension[0] == L'.'))
|
|
{
|
|
cchExtension--;
|
|
newExtension++;
|
|
}
|
|
|
|
// the use of append when we know where the end of the string is inefficient
|
|
end = this->End();
|
|
|
|
IFW32FALSE_EXIT(TCharTraits::Win32ReverseFind(dot, m_prgchBuffer, m_cch, this->DotChar(), false));
|
|
|
|
// Found the end of the string, or Win32ReverseFind didn't find the dot anywhere...
|
|
if ((dot == end) || (dot == NULL))
|
|
{
|
|
switch (e)
|
|
{
|
|
case eAddIfNoExtension:
|
|
IFW32FALSE_EXIT(this->Win32Append(this->DotString(), 1));
|
|
IFW32FALSE_EXIT(this->Win32Append(newExtension, cchExtension));
|
|
break;
|
|
|
|
case eDoNothingIfNoExtension:
|
|
break;
|
|
|
|
case eErrorIfNoExtension:
|
|
ORIGINATE_WIN32_FAILURE_AND_EXIT(MissingExtension, ERROR_BAD_PATHNAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
++dot;
|
|
this->Left(dot - this->Begin());
|
|
IFW32FALSE_EXIT(this->Win32Append(newExtension, cchExtension));
|
|
}
|
|
|
|
fSuccess = TRUE;
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
BOOL Win32CopyStringOut(LPWSTR sz, ULONG *pcch)
|
|
{
|
|
FN_PROLOG_WIN32
|
|
|
|
this->IntegrityCheck();
|
|
|
|
SIZE_T cwchRequired;
|
|
|
|
PARAMETER_CHECK(pcch != NULL);
|
|
|
|
IFW32FALSE_EXIT(TCharTraits::Win32DetermineRequiredCharacters(m_prgchBuffer, m_cch, cwchRequired));
|
|
|
|
if ((*pcch) < cwchRequired)
|
|
{
|
|
*pcch = static_cast<DWORD>(cwchRequired);
|
|
ORIGINATE_WIN32_FAILURE_AND_EXIT(NoRoom, ERROR_INSUFFICIENT_BUFFER);
|
|
}
|
|
|
|
IFW32FALSE_EXIT(TCharTraits::Win32CopyIntoBuffer(sz, *pcch, m_prgchBuffer, m_cch));
|
|
|
|
FN_EPILOG
|
|
}
|
|
|
|
//
|
|
// This function is rather special purpose in that several design choices are not
|
|
// implemented as parameters. In particular, the pcbBytesWritten is assumed to
|
|
// accumulate a number (thus it's updated by adding the number of bytes written to
|
|
// it rather than just setting it to the count of bytes written).
|
|
//
|
|
// It also writes 0 bytes into the buffer is the string is zero length; if the string
|
|
// is not zero length, it writes the string including a trailing null.
|
|
//
|
|
|
|
inline BOOL Win32CopyIntoBuffer(
|
|
PWSTR *ppszCursor,
|
|
SIZE_T *pcbBuffer,
|
|
SIZE_T *pcbBytesWritten,
|
|
PVOID pvBase,
|
|
ULONG *pulOffset,
|
|
ULONG *pulLength
|
|
) const
|
|
{
|
|
this->IntegrityCheck();
|
|
|
|
BOOL fSuccess = FALSE;
|
|
|
|
FN_TRACE_WIN32(fSuccess);
|
|
|
|
PWSTR pszCursor;
|
|
SSIZE_T dptr;
|
|
SIZE_T cbRequired;
|
|
SIZE_T cch;
|
|
|
|
if (pulOffset != NULL)
|
|
*pulOffset = 0;
|
|
|
|
if (pulLength != NULL)
|
|
*pulLength = 0;
|
|
|
|
PARAMETER_CHECK(pcbBuffer != NULL);
|
|
PARAMETER_CHECK(ppszCursor != NULL);
|
|
|
|
pszCursor = *ppszCursor;
|
|
dptr = ((SSIZE_T) pszCursor) - ((SSIZE_T) pvBase);
|
|
|
|
// If they're asking for an offset or length and the cursor is too far from the base,
|
|
// fail.
|
|
PARAMETER_CHECK((pulOffset == NULL) || (dptr <= ULONG_MAX));
|
|
|
|
cch = m_cch;
|
|
|
|
cbRequired = (cch != 0) ? ((cch + 1) * sizeof(WCHAR)) : 0;
|
|
|
|
if ((*pcbBuffer) < cbRequired)
|
|
{
|
|
::FusionpSetLastWin32Error(ERROR_INSUFFICIENT_BUFFER);
|
|
goto Exit;
|
|
}
|
|
|
|
if (cbRequired > ULONG_MAX)
|
|
{
|
|
::FusionpSetLastWin32Error(ERROR_INSUFFICIENT_BUFFER);
|
|
goto Exit;
|
|
}
|
|
|
|
memcpy(pszCursor, static_cast<PCWSTR>(*this), cbRequired);
|
|
|
|
if (pulOffset != NULL)
|
|
{
|
|
if (cbRequired != 0)
|
|
*pulOffset = (ULONG) dptr;
|
|
}
|
|
|
|
if (pulLength != NULL)
|
|
{
|
|
if (cbRequired == 0)
|
|
*pulLength = 0;
|
|
else
|
|
{
|
|
*pulLength = (ULONG) (cbRequired - sizeof(WCHAR));
|
|
}
|
|
}
|
|
|
|
*pcbBytesWritten += cbRequired;
|
|
*pcbBuffer -= cbRequired;
|
|
|
|
*ppszCursor = (PWSTR) (((ULONG_PTR) pszCursor) + cbRequired);
|
|
|
|
fSuccess = TRUE;
|
|
|
|
Exit:
|
|
return fSuccess;
|
|
}
|
|
|
|
protected:
|
|
TMutableString Begin()
|
|
{
|
|
this->IntegrityCheck();
|
|
/* CopyBeforeWrite() */
|
|
return m_prgchBuffer;
|
|
}
|
|
|
|
TMutableString End()
|
|
{
|
|
this->IntegrityCheck();
|
|
return &m_prgchBuffer[m_cch];
|
|
}
|
|
|
|
LONG m_cAttachedAccessors;
|
|
TChar *m_prgchBuffer;
|
|
SIZE_T m_cchBuffer;
|
|
SIZE_T m_cch; // current length of string
|
|
};
|
|
|
|
template <typename TCharTraits> class CGenericStringBufferAccessor
|
|
{
|
|
public:
|
|
typedef CGenericBaseStringBuffer<TCharTraits> TBuffer;
|
|
typedef CGenericBaseStringBuffer<TCharTraits>::TChar TChar;
|
|
|
|
CGenericStringBufferAccessor(TBuffer* pBuffer = NULL)
|
|
: m_pBuffer(NULL),
|
|
m_pszBuffer(NULL),
|
|
m_cchBuffer(NULL)
|
|
{
|
|
if (pBuffer != NULL)
|
|
{
|
|
Attach(pBuffer);
|
|
}
|
|
}
|
|
|
|
~CGenericStringBufferAccessor()
|
|
{
|
|
if (m_pBuffer != NULL)
|
|
{
|
|
m_pBuffer->m_cch = TCharTraits::NullTerminatedStringLength(m_pszBuffer);
|
|
m_pBuffer->DetachAccessor(this);
|
|
m_pBuffer = NULL;
|
|
m_pszBuffer = NULL;
|
|
m_cchBuffer = 0;
|
|
}
|
|
}
|
|
|
|
bool IsAttached() const
|
|
{
|
|
return (m_pBuffer != NULL);
|
|
}
|
|
|
|
static TChar NullCharacter() { return TCharTraits::NullCharacter(); }
|
|
|
|
void Attach(TBuffer *pBuffer)
|
|
{
|
|
FN_TRACE();
|
|
|
|
ASSERT(!IsAttached());
|
|
|
|
if (!IsAttached())
|
|
{
|
|
pBuffer->AttachAccessor(this);
|
|
|
|
m_pBuffer = pBuffer;
|
|
m_pszBuffer = m_pBuffer->m_prgchBuffer;
|
|
m_cchBuffer = m_pBuffer->m_cchBuffer;
|
|
}
|
|
}
|
|
|
|
void Detach()
|
|
{
|
|
FN_TRACE();
|
|
|
|
ASSERT (IsAttached());
|
|
|
|
if (IsAttached())
|
|
{
|
|
ASSERT(m_pszBuffer == m_pBuffer->m_prgchBuffer);
|
|
|
|
m_pBuffer->m_cch = TCharTraits::NullTerminatedStringLength(m_pszBuffer);
|
|
m_pBuffer->DetachAccessor(this);
|
|
|
|
m_pBuffer = NULL;
|
|
m_pszBuffer = NULL;
|
|
m_cchBuffer = 0;
|
|
}
|
|
else
|
|
{
|
|
ASSERT(m_pszBuffer == NULL);
|
|
ASSERT(m_cchBuffer == 0);
|
|
}
|
|
}
|
|
|
|
operator TCharTraits::TMutableString() const { ASSERT_NTC(this->IsAttached()); return m_pszBuffer; }
|
|
|
|
SIZE_T Cch() const { ASSERT_NTC(this->IsAttached()); return (m_pszBuffer != NULL) ? ::wcslen(m_pszBuffer) : 0; }
|
|
|
|
TCharTraits::TMutableString GetBufferPtr() const { ASSERT_NTC(IsAttached()); return m_pszBuffer; }
|
|
|
|
SIZE_T GetBufferCch() const { ASSERT_NTC(this->IsAttached()); return m_cchBuffer; }
|
|
INT GetBufferCchAsINT() const { ASSERT_NTC(this->IsAttached()); if (m_cchBuffer > INT_MAX) return INT_MAX; return static_cast<INT>(m_cchBuffer); }
|
|
UINT GetBufferCchAsUINT() const { ASSERT_NTC(this->IsAttached()); if (m_cchBuffer > UINT_MAX) return UINT_MAX; return static_cast<UINT>(m_cchBuffer); }
|
|
DWORD GetBufferCchAsDWORD() const { ASSERT_NTC(this->IsAttached()); if (m_cchBuffer > MAXDWORD) return MAXDWORD; return static_cast<DWORD>(m_cchBuffer); }
|
|
|
|
SIZE_T GetBufferCb() const { ASSERT_NTC(this->IsAttached()); return m_cchBuffer * sizeof(*m_pszBuffer); }
|
|
INT GetBufferCbAsINT() const { ASSERT_NTC(this->IsAttached()); if ((m_cchBuffer * sizeof(TChar)) > INT_MAX) return INT_MAX; return static_cast<INT>(m_cchBuffer * sizeof(TChar)); }
|
|
DWORD GetBufferCbAsDWORD() const { ASSERT_NTC(this->IsAttached()); if ((m_cchBuffer * sizeof(TChar)) > MAXDWORD) return MAXDWORD; return static_cast<DWORD>(m_cchBuffer * sizeof(TChar)); }
|
|
|
|
protected:
|
|
TBuffer *m_pBuffer;
|
|
TCharTraits::TMutableString m_pszBuffer;
|
|
SIZE_T m_cchBuffer;
|
|
};
|
|
|
|
template <SIZE_T nInlineChars, typename TCharTraits> class CGenericStringBuffer : public CGenericBaseStringBuffer<TCharTraits>
|
|
{
|
|
typedef CGenericBaseStringBuffer<TCharTraits> Base;
|
|
|
|
protected:
|
|
BOOL Win32AllocateBuffer(SIZE_T cch, TMutableString &rpsz) const
|
|
{
|
|
// You shouldn't be doing this if the required buffer size is small enough to be inline...
|
|
ASSERT_NTC(cch > nInlineChars);
|
|
|
|
rpsz = NULL;
|
|
|
|
TCharTraits::TMutableString String = NULL;
|
|
String = reinterpret_cast<TCharTraits::TMutableString>(::FusionpHeapAllocEx(
|
|
FUSION_DEFAULT_PROCESS_HEAP(),
|
|
0,
|
|
cch * sizeof(TCharTraits::TChar),
|
|
"<string buffer>",
|
|
__FILE__,
|
|
__LINE__,
|
|
0)); // fusion heap allocation flags
|
|
if (String == NULL)
|
|
{
|
|
::FusionpSetLastWin32Error(FUSION_WIN32_ALLOCFAILED_ERROR);
|
|
return FALSE;
|
|
}
|
|
|
|
rpsz = String;
|
|
return TRUE;
|
|
}
|
|
|
|
VOID DeallocateBuffer(TMutableString sz) const
|
|
{
|
|
VERIFY_NTC(::FusionpHeapFree(FUSION_DEFAULT_PROCESS_HEAP(), 0, sz));
|
|
}
|
|
|
|
TMutableString GetInlineBuffer() const { return const_cast<TMutableString>(m_rgchInlineBuffer); }
|
|
SIZE_T GetInlineBufferCch() const { return nInlineChars; }
|
|
|
|
public:
|
|
CGenericStringBuffer() { m_rgchInlineBuffer[0] = this->NullCharacter(); Base::InitializeInlineBuffer(); }
|
|
~CGenericStringBuffer() { if (m_prgchBuffer != m_rgchInlineBuffer) { this->DeallocateBuffer(m_prgchBuffer); } m_prgchBuffer = NULL; m_cchBuffer = 0; }
|
|
|
|
protected:
|
|
TChar m_rgchInlineBuffer[nInlineChars];
|
|
|
|
private:
|
|
CGenericStringBuffer(const CGenericStringBuffer &); // intentionally not implemented
|
|
void operator =(const CGenericStringBuffer &); // intentionally not implemented
|
|
};
|
|
|
|
template <SIZE_T nInlineChars, typename TCharTraits> class CGenericHeapStringBuffer : public CGenericBaseStringBuffer<TCharTraits>
|
|
{
|
|
// friend CGenericBaseStringBuffer<TCharTraits>;
|
|
typedef CGenericBaseStringBuffer<TCharTraits> Base;
|
|
|
|
protected:
|
|
BOOL Win32AllocateBuffer(SIZE_T cch, TMutableString &rpsz) const
|
|
{
|
|
// You shouldn't be doing this if the required buffer size is small enough to be inline...
|
|
ASSERT_NTC(cch > nInlineChars);
|
|
|
|
rpsz = NULL;
|
|
|
|
TCharTraits::TMutableString String = NULL;
|
|
String = reinterpret_cast<TCharTraits::TMutableString>(::FusionpHeapAllocEx(
|
|
m_hHeap,
|
|
dwDefaultWin32HeapAllocFlags,
|
|
cch * sizeof(TCharTraits::TChar),
|
|
"<string buffer>",
|
|
__FILE__,
|
|
__LINE__,
|
|
0)) // fusion heap allocation flags
|
|
if (String == NULL)
|
|
{
|
|
::FusionpSetLastWin32Error(FUSION_WIN32_ALLOCFAILED_ERROR);
|
|
return FALSE;
|
|
}
|
|
|
|
rpsz = String;
|
|
return TRUE;
|
|
}
|
|
|
|
VOID DeallocateBuffer(TMutableString sz) const
|
|
{
|
|
VERIFY_NTC(::FusionpHeapFree(m_hHeap, dwDefaultWin32HeapFreeFlags, sz));
|
|
}
|
|
|
|
TMutableString GetInlineBuffer() const { return m_rgchInlineBuffer; }
|
|
SIZE_T GetInlineBufferCch() const { return nInlineChars; }
|
|
|
|
public:
|
|
CGenericHeapStringBuffer(HANDLE hHeap) : m_hHeap(hHeap) { m_rgchInlineBuffer[0] = this->NullCharacter(); Base::InitializeInlineBuffer(); }
|
|
|
|
~CGenericHeapStringBuffer() { ASSERT(m_cchBuffer == 0); ASSERT(m_prgchBuffer == NULL); }
|
|
|
|
protected:
|
|
HANDLE m_hHeap;
|
|
TChar m_rgchInlineBuffer[nInlineChars];
|
|
};
|
|
|
|
typedef CGenericStringBufferAccessor<CUnicodeCharTraits> CUnicodeStringBufferAccessor;
|
|
|
|
typedef CGenericBaseStringBuffer<CUnicodeCharTraits> CUnicodeBaseStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_STRINGBUFFER_CHARS, CUnicodeCharTraits> CUnicodeStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_STRINGBUFFER_CHARS, CUnicodeCharTraits> CUnicodeHeapStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_TINY_STRINGBUFFER_CHARS, CUnicodeCharTraits> CTinyUnicodeStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_TINY_STRINGBUFFER_CHARS, CUnicodeCharTraits> CTinyUnicodeHeapStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_SMALL_STRINGBUFFER_CHARS, CUnicodeCharTraits> CSmallUnicodeStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_SMALL_STRINGBUFFER_CHARS, CUnicodeCharTraits> CSmallUnicodeHeapStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_MEDIUM_STRINGBUFFER_CHARS, CUnicodeCharTraits> CMediumUnicodeStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_MEDIUM_STRINGBUFFER_CHARS, CUnicodeCharTraits> CMediumUnicodeHeapStringBuffer;
|
|
|
|
typedef CGenericStringBufferAccessor<CANSICharTraits> CANSIStringBufferAccessor;
|
|
|
|
typedef CGenericBaseStringBuffer<CANSICharTraits> CANSIBaseStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_STRINGBUFFER_CHARS, CANSICharTraits> CANSIStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_STRINGBUFFER_CHARS, CANSICharTraits> CANSIHeapStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_TINY_STRINGBUFFER_CHARS, CANSICharTraits> CTinyANSIStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_TINY_STRINGBUFFER_CHARS, CANSICharTraits> CTinyANSIHeapStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_SMALL_STRINGBUFFER_CHARS, CANSICharTraits> CSmallANSIStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_SMALL_STRINGBUFFER_CHARS, CANSICharTraits> CSmallANSIHeapStringBuffer;
|
|
|
|
typedef CGenericStringBuffer<FUSION_DEFAULT_MEDIUM_STRINGBUFFER_CHARS, CANSICharTraits> CMediumANSIStringBuffer;
|
|
typedef CGenericHeapStringBuffer<FUSION_DEFAULT_MEDIUM_STRINGBUFFER_CHARS, CANSICharTraits> CMediumANSIHeapStringBuffer;
|
|
|
|
typedef CUnicodeBaseStringBuffer CBaseStringBuffer;
|
|
typedef CUnicodeStringBuffer CStringBuffer;
|
|
typedef CUnicodeHeapStringBuffer CHeapStringBuffer;
|
|
|
|
typedef CUnicodeStringBufferAccessor CStringBufferAccessor;
|
|
|
|
typedef CTinyUnicodeStringBuffer CTinyStringBuffer;
|
|
typedef CTinyUnicodeHeapStringBuffer CTinyHeapStringBuffer;
|
|
|
|
typedef CSmallUnicodeStringBuffer CSmallStringBuffer;
|
|
typedef CSmallUnicodeHeapStringBuffer CSmallHeapStringBuffer;
|
|
|
|
typedef CMediumUnicodeStringBuffer CMediumStringBuffer;
|
|
typedef CMediumUnicodeHeapStringBuffer CMediumHeapStringBuffer;
|
|
|
|
template <typename T1, typename T2> inline HRESULT HashTableCompareKey(T1 t1, T2 *pt2, bool &rfMatch);
|
|
|
|
template <> inline HRESULT HashTableCompareKey(PCWSTR sz, CUnicodeStringBuffer *pbuff, bool &rfMatch)
|
|
{
|
|
HRESULT hr = NOERROR;
|
|
SIZE_T cchKey = (sz != NULL) ? ::wcslen(sz) : 0;
|
|
|
|
rfMatch = false;
|
|
|
|
if (!pbuff->Win32Equals(sz, cchKey, rfMatch, false))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(::FusionpGetLastWin32Error());
|
|
goto Exit;
|
|
}
|
|
|
|
hr = NOERROR;
|
|
Exit:
|
|
return hr;
|
|
}
|
|
|
|
template <> inline HRESULT HashTableCompareKey(PCSTR sz, CANSIStringBuffer *pbuff, bool &rfMatch)
|
|
{
|
|
HRESULT hr = NOERROR;
|
|
SIZE_T cchKey = ::strlen(sz);
|
|
|
|
rfMatch = false;
|
|
|
|
if (!pbuff->Win32Equals(sz, cchKey, rfMatch, false))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(::FusionpGetLastWin32Error());
|
|
goto Exit;
|
|
}
|
|
|
|
hr = NOERROR;
|
|
Exit:
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// Support for CFusionArrays of strings
|
|
//
|
|
inline HRESULT
|
|
FusionCopyContents<CBaseStringBuffer>(
|
|
CBaseStringBuffer &Dest,
|
|
const CBaseStringBuffer &Source
|
|
)
|
|
{
|
|
HRESULT hr = NOERROR;
|
|
|
|
if (!Dest.Win32Assign(Source, Source.Cch()))
|
|
hr = HRESULT_FROM_WIN32(::FusionpGetLastWin32Error());
|
|
|
|
return hr;
|
|
}
|
|
|
|
template<>
|
|
inline BOOL
|
|
FusionWin32CopyContents<CStringBuffer>(
|
|
CStringBuffer &rDestination,
|
|
const CStringBuffer &rSource
|
|
)
|
|
{
|
|
return rDestination.Win32Assign(rSource);
|
|
}
|
|
|
|
template<>
|
|
inline HRESULT
|
|
FusionCopyContents<CStringBuffer>(
|
|
CStringBuffer &rDest,
|
|
const CStringBuffer &rSource
|
|
)
|
|
{
|
|
FN_PROLOG_HR
|
|
IFW32FALSE_EXIT(::FusionWin32CopyContents<CStringBuffer>(rDest, rSource));
|
|
FN_EPILOG
|
|
}
|
|
|
|
template<>
|
|
inline void
|
|
FusionMoveContents<CStringBuffer>(
|
|
CStringBuffer &rDest,
|
|
CStringBuffer &rSource
|
|
)
|
|
{
|
|
FN_TRACE();
|
|
HARD_ASSERT2_ACTION(FusionMoveContents, "FusionMoveContents for CAssemblyRecoveryInfo isn't allowed.");
|
|
}
|
|
|
|
#endif
|