88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
///////////////////////////////////////////////////////
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// StringMap.H
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//
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// STL - based template which throws COM-compatible exceptions
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// for making maps
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/////////////////////////////////////////////////////////
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#pragma once
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#pragma warning (disable: 4786) // exceeds 255 chars in browser info
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#include <comdef.h>
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#include <string>
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#include <map>
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using namespace std;
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class throwing_allocator : public allocator<wchar_t>
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{
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public:
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// overloading the allocation routines to throw
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// exceptions rather than fail silently
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pointer allocate(size_type _N, const void *)
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{
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pointer p = (_Allocate((difference_type)_N, (pointer)0));
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if (p == NULL)
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_com_raise_error (E_OUTOFMEMORY);
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return p;
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}
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char _FARQ *_Charalloc(size_type _N)
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{
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char _FARQ * p = _Allocate((difference_type)_N, (char _FARQ *)0);
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if (p == NULL)
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_com_raise_error (E_OUTOFMEMORY);
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return p;
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}
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};
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typedef basic_string<wchar_t, char_traits<wchar_t>,
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throwing_allocator > throwing_wstring;
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class StringToStringMap
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{
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typedef std::map<throwing_wstring, throwing_wstring> throwing_map;
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throwing_map m_map;
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public:
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HRESULT Add(LPCWSTR Key, LPCWSTR Value)
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{
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try
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{
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m_map[Key] = Value;
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// throwing_map::iterator p = m_map.find(Key);
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// ASSERT (m_map.find(Key) != m_map.end());
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// _bstr_t b = (*p).second.c_str();
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// TRACE ("%s -> %s\n", (LPCTSTR) _bstr_t(Key), (LPCTSTR) b);
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}
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catch (_com_error e)
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{
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return e.Error(); // out of memory
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}
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return S_OK;
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}
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throwing_map::size_type GetSize()
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{
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return m_map.size();
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}
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HRESULT Find(LPCWSTR Key, _bstr_t& Value, bool &bFound)
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{
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try
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{
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throwing_map::iterator p = m_map.find(Key);
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if (p == m_map.end())
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{
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bFound = false;
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return S_FALSE;
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}
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else
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{
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Value = (*p).second.c_str();
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bFound = true;
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}
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}
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catch (_com_error e)
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{
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return e.Error(); // out of memory
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}
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return S_OK;
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}
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};
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