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#include "stdafx.h"
#include "timezone.h"
TimeList timezone_list, geo_timezone_list;
bool LS_TZREG::operator<(const LS_TZREG &other) {
//return Index < other.Index;
return TZI.Bias < other.TZI.Bias;
}
bool build_timezone_list() {
HKEY HKlmtz;
HKEY KKtz;
DWORD dwIndex = 0;
CHAR tcName[MAX_SIZE];
DWORD dwcbName = MAX_SIZE;
DWORD dwcbValue;
DWORD dwcbSTD;
DWORD dwcbDLT;
LS_TZREG Temp;
FILETIME ftLastWrite;
unsigned int list_index = 0;
bool win9x = false;
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, TZREG, 0, KEY_ENUMERATE_SUB_KEYS, &HKlmtz) != ERROR_SUCCESS) {
win9x = true;
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, TZREG_9X, 0, KEY_ENUMERATE_SUB_KEYS, &HKlmtz) != ERROR_SUCCESS)
return false;
}
while(RegEnumKeyEx(HKlmtz, dwIndex++, tcName, &dwcbName, NULL, NULL, NULL, &ftLastWrite) != ERROR_NO_MORE_ITEMS) {
if(RegOpenKeyEx(HKlmtz, tcName, 0,KEY_QUERY_VALUE, &KKtz) != ERROR_SUCCESS) {
RegCloseKey(HKlmtz);
return false;
}
strncpy(Temp.tcName, tcName, MAX_SIZE);
dwcbValue = MAX_SIZE;
RegQueryValueEx(KKtz,"Display",NULL,NULL,(BYTE*)Temp.tcDisp,&dwcbValue);
dwcbDLT = MAX_SIZE;
RegQueryValueEx(KKtz,"Dlt",NULL,NULL,(BYTE*)Temp.tcDLT,&dwcbDLT);
dwcbSTD = MAX_SIZE;
RegQueryValueEx(KKtz,"Std",NULL,NULL,(BYTE*)Temp.tcSTD,&dwcbSTD);
dwcbValue = MAX_SIZE;
RegQueryValueEx(KKtz,"MapID",NULL,NULL,(BYTE*)Temp.MapID,&dwcbValue);
if(!win9x) {
dwcbValue = sizeof(DWORD);
RegQueryValueEx(KKtz,"Index",NULL,NULL,(BYTE*)&Temp.Index,&dwcbValue);
}
dwcbValue = sizeof(Temp.TZI);
RegQueryValueEx(KKtz,"TZI",NULL,NULL,(BYTE*)&Temp.TZI,&dwcbValue);
RegCloseKey(KKtz);
Temp.list_index = list_index;
timezone_list.push_back(Temp);
dwcbName = MAX_SIZE;
list_index++;
}
RegCloseKey(HKlmtz);
geo_timezone_list = timezone_list;
std::sort(geo_timezone_list.begin(), geo_timezone_list.end());
return true;
}
bool get_reg_tzi_for_gmt(REG_TZI ®_tzi) {
for(TimeList::iterator i = timezone_list.begin(); i != timezone_list.end(); i++) {
if(!strcmp(i->tcName, "GMT Standard Time")) {
reg_tzi = i->TZI;
return true;
}
}
return false;
}
bool get_reg_tzi_for_central_european(REG_TZI ®_tzi) {
// for language independece, look for a timezone with Bias == -60 - daylight savings is ignored anyway
for(TimeList::iterator i = timezone_list.begin(); i != timezone_list.end(); i++) {
if(i->TZI.Bias == -60) {
reg_tzi = i->TZI;
return true;
}
}
return false;
}
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