174 lines
3.1 KiB
C++
174 lines
3.1 KiB
C++
/*++
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Copyright (c) 1994 Microsoft Corporation
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All rights reserved.
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Module Name:
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String.hxx
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Abstract:
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Short-short implementation of strings.
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Author:
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Albert Ting (AlbertT) 9-June-1994
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Revision History:
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--*/
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#ifndef _STRING_HXX
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#define _STRING_HXX
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class TString {
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SIGNATURE( 'strg' )
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SAFE_NEW
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public:
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//
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// For the default constructor, we initialize _pszString to a
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// global gszState[kValid] string. This allows them to work correctly,
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// but prevents the extra memory allocation.
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//
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// Note: if this class is extended (with reference counting
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// or "smart" reallocations), this strategy may break.
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//
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TString(
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VOID
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);
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TString(
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IN LPCTSTR psz
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);
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~TString(
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VOID
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);
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TString(
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IN const TString &String
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);
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BOOL
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bEmpty(
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VOID
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) const;
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BOOL
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bValid(
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VOID
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) const;
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BOOL
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bUpdate(
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IN LPCTSTR pszNew
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);
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BOOL
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bLoadString(
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IN HINSTANCE hInst,
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IN UINT uID
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);
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UINT
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TString::
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uLen(
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VOID
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) const;
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BOOL
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TString::
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bCat(
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IN LPCTSTR psz
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);
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//
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// Caution: See function header for usage and side effects.
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//
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BOOL
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TString::
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bFormat(
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IN LPCTSTR pszFmt,
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IN ...
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);
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//
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// Caution: See function header for usage and side effects.
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//
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BOOL
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TString::
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bvFormat(
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IN LPCTSTR pszFmt,
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IN va_list avlist
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);
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//
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// Operator overloads.
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//
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operator LPCTSTR( VOID ) const
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{ return _pszString; }
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friend INT operator==(const TString& String, LPCTSTR& psz)
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{ return !lstrcmp(String._pszString, psz); }
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friend INT operator==(LPCTSTR& psz, const TString& String)
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{ return !lstrcmp(psz, String._pszString); }
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friend INT operator==(const TString& String1, const TString& String2)
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{ return !lstrcmp(String1._pszString, String2._pszString); }
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friend INT operator!=(const TString& String, LPCTSTR& psz)
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{ return lstrcmp(String._pszString, psz) != 0; }
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friend INT operator!=(LPCTSTR& psz, const TString& String)
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{ return lstrcmp(psz, String._pszString) != 0; }
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friend INT operator!=(const TString& String1, const TString& String2)
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{ return lstrcmp(String1._pszString, String2._pszString) != 0; }
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protected:
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//
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// Not defined; used bUpdate since this forces clients to
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// check whether the assignment succeeded (it may fail due
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// to lack of memory, etc.).
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//
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TString& operator=( LPCTSTR psz );
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TString& operator=(const TString& String);
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private:
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enum StringStatus {
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kValid = 0,
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kInValid = 1,
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};
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enum {
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kStrIncrement = 256,
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kStrMaxFormatSize = 1024 * 100,
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};
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LPTSTR _pszString;
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static TCHAR gszNullState[2];
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LPTSTR
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TString::
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vsntprintf(
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IN LPCTSTR szFmt,
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IN va_list pArgs
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);
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VOID
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TString::
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vFree(
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IN LPTSTR pszString
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);
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};
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#endif // ndef _STRING_HXX
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