78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
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#ifndef _INC_DSKQUOTA_DBLNUL_H
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#define _INC_DSKQUOTA_DBLNUL_H
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//
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// For iterating over items in a double-nul terminated list of
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// text strings.
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//
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class DblNulTermListIter
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{
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public:
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explicit DblNulTermListIter(LPCTSTR pszList)
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: m_pszList(pszList),
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m_pszCurrent(pszList) { }
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~DblNulTermListIter(void) { }
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bool Next(LPCTSTR *ppszItem);
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void Reset(void)
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{ m_pszCurrent = m_pszList; }
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private:
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LPCTSTR m_pszList;
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LPCTSTR m_pszCurrent;
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};
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class DblNulTermList
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{
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public:
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explicit DblNulTermList(int cchGrow = MAX_PATH)
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: m_psz(new TCHAR[1]),
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m_cchAlloc(1),
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m_cchUsed(0),
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m_cStrings(0),
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m_cchGrow(cchGrow) { *m_psz = TEXT('\0'); }
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~DblNulTermList(void)
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{ delete[] m_psz; }
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bool AddString(const CString& s)
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{ return AddString(s.Cstr(), s.Length()); }
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bool AddString(LPCTSTR psz)
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{ return AddString(psz, psz ? lstrlen(psz) : 0); }
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int Count(void) const
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{ return m_cStrings; }
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operator LPCTSTR ()
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{ return m_psz; }
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DblNulTermListIter CreateIterator(void) const
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{ return DblNulTermListIter(m_psz); }
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#if DBG
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void Dump(void) const;
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#endif
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private:
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LPTSTR m_psz; // The text buffer.
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int m_cchAlloc; // Total allocation in chars.
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int m_cchUsed; // Total used excluding FINAL nul term.
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int m_cchGrow; // How much to grow each expansion.
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int m_cStrings; // Count of strings in list.
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bool AddString(LPCTSTR psz, int cch);
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bool Grow(void);
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//
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// Prevent copy.
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//
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DblNulTermList(const DblNulTermList& rhs);
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DblNulTermList& operator = (const DblNulTermList& rhs);
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};
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#endif // INC_DSKQUOTA_DBLNUL_H
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