95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1997 - 1999
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//
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// File: filesize.h
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//
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//--------------------------------------------------------------------------
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#ifndef _INC_CSCVIEW_FILESIZE_H
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#define _INC_CSCVIEW_FILESIZE_H
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//
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// Simple class to convert a file size value to a string formatted for display.
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// The display format is the same used by the shell (i.e. "10.5 MB")
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//
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class FileSize
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{
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public:
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explicit FileSize(ULONGLONG ullSize = 0);
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~FileSize(void) { }
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FileSize(const FileSize& rhs)
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{ *this = rhs; }
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FileSize& operator = (const FileSize& rhs);
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int Compare(const FileSize& rhs) const
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{ return *this > rhs ? 1 : (*this == rhs ? 0 : -1); }
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operator ULONGLONG() const
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{ return m_ullSize; }
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ULONGLONG GetSize(void) const
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{ return m_ullSize; }
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void GetString(LPTSTR pszOut, UINT cchOut) const
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{ TraceAssert(NULL != pszOut); Format(m_ullSize, pszOut, cchOut); }
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private:
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ULONGLONG m_ullSize; // Size as a number.
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static int m_rgiOrders[]; // Array of format string res IDs.
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void Format(ULONGLONG ullSize, LPTSTR pszOut, UINT cchOut) const;
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void CvtSizeToText(ULONGLONG n, LPTSTR pszBuffer) const;
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int StrToInt(LPCTSTR lpSrc) const;
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LPTSTR AddCommas(ULONGLONG n, LPTSTR pszResult, int cchResult) const;
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bool IsDigit(TCHAR ch) const
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{ return (ch >= TEXT('0') && ch <= TEXT('9')); }
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friend bool operator == (const FileSize& a, const FileSize& b);
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friend bool operator != (const FileSize& a, const FileSize& b);
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friend bool operator < (const FileSize& a, const FileSize& b);
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friend bool operator <= (const FileSize& a, const FileSize& b);
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friend bool operator > (const FileSize& a, const FileSize& b);
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friend bool operator >= (const FileSize& a, const FileSize& b);
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};
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//
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// The various comparison operators for FileSize objects.
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//
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inline bool operator == (const FileSize& a, const FileSize& b)
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{
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return a.m_ullSize == b.m_ullSize;
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}
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inline bool operator != (const FileSize& a, const FileSize& b)
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{
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return !(a == b);
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}
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inline bool operator < (const FileSize& a, const FileSize& b)
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{
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return a.m_ullSize < b.m_ullSize;
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}
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inline bool operator <= (const FileSize& a, const FileSize& b)
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{
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return (a < b) || (a == b);
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}
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inline bool operator > (const FileSize& a, const FileSize& b)
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{
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return !(a < b) && !(a == b);
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}
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inline bool operator >= (const FileSize& a, const FileSize& b)
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{
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return (a > b) || (a == b);
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}
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#endif // _INC_CSCVIEW_FILESIZE_H
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