LogManager.cpp

// Classic Shell (c) 2009-2017, Ivo Beltchev
// Open-Shell (c) 2017-2018, The Open-Shell Team
// Confidential information of Ivo Beltchev. Not for disclosure or distribution without prior written consent from the author

// LogManager.cpp - logging functionality (for debugging)

#include"stdafx.h"
#include"LogManager.h"
#include"ResourceHelper.h"
#include"ComHelper.h"
#include<propvarutil.h>
#include<chrono>

int g_LogCategories;
static FILE *g_LogFile;
static std::chrono::time_point<std::chrono::steady_clock> g_LogTime;

voidInitLog( int categories, constwchar_t *fname )
{
CloseLog();
if (categories==0) return;
if (_wfopen_s(&g_LogFile,fname,L"wb")==0)
 {
wchar_t bom=0xFEFF;
fwrite(&bom,2,1,g_LogFile);
 g_LogCategories=categories;
 g_LogTime=std::chrono::steady_clock::now();
LogMessage(L"version=%x, PID=%d, TID=%d, Categories=%08x\r\n",GetWinVersion(),GetCurrentProcessId(),GetCurrentThreadId(),categories);
 }
}

voidCloseLog( void )
{
if (g_LogFile) fclose(g_LogFile);
 g_LogFile=NULL;
 g_LogCategories=0;
}

voidLogMessage( constwchar_t *text, ... )
{
if (!g_LogFile) return;

wchar_t buf[2048];
int len=Sprintf(buf,_countof(buf),L"%8d: ",std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now()-g_LogTime).count());
fwrite(buf,2,len,g_LogFile);

va_list args;
va_start(args,text);
 len=Vsprintf(buf,_countof(buf),text,args);
va_end(args);
fwrite(buf,2,len,g_LogFile);

fwrite(L"\r\n",2,2,g_LogFile);

fflush(g_LogFile);
}

voidLogPropertyStore(TLogCategory category, IPropertyStore* store)
{
if (!store)
return;

 DWORD count = 0;
 store->GetCount(&count);
for (DWORD i = 0; i < count; i++)
 {
 PROPERTYKEY key{};
 store->GetAt(i, &key);

 PROPVARIANT val;
PropVariantInit(&val);

 store->GetValue(key, &val);

 CComString valueStr;
PropVariantToStringAlloc(val, &valueStr);
PropVariantClear(&val);

wchar_t guidStr[100]{};
StringFromGUID2(key.fmtid, guidStr, _countof(guidStr));

LOG_MENU(category, L"Property: {%s, %u} = %s", guidStr, key.pid, valueStr ? valueStr : L"???");
 }
}