507   int32_t& iMonth = *pMonth;  in IsIsoDateFormat()  local
511   iMonth = 1;  in IsIsoDateFormat()
539   iMonth = FXSYS_atoi(szBuffer);  in IsIsoDateFormat()
540   if (iMonth > 12 || iMonth < 1)  in IsIsoDateFormat()
561   if (iMonth == 2) {  in IsIsoDateFormat()
566   if (iMonth < 8)  in IsIsoDateFormat()
567     return iDay <= (iMonth % 2 == 0 ? 30 : 31);  in IsIsoDateFormat()
568   return iDay <= (iMonth % 2 == 0 ? 31 : 30);  in IsIsoDateFormat()
732   int32_t& iMonth = *pMonth;  in IsIsoDateTimeFormat()  local
742   iMonth = 0;  in IsIsoDateTimeFormat()
761   if (!IsIsoDateFormat(pData.subspan(0, iIndex), &iStyle, &iYear, &iMonth,  in IsIsoDateTimeFormat()
775   int32_t iMonth = 0;  in DateString2Num()  local
779     if (!IsIsoDateFormat(bsDate.span(), &iStyle, &iYear, &iMonth, &iDay))  in DateString2Num()
788     if (!IsIsoDateTimeFormat(bsDate.span(), &iYear, &iMonth, &iDay, &iHour,  in DateString2Num()
808   while (i < iMonth) {  in DateString2Num()
2112   int32_t iMonth = 1;  in Num2Date()  local
2116     if (iMonth == 2) {  in Num2Date()
2119           ++iMonth;  in Num2Date()
2120           if (iMonth > 12) {  in Num2Date()
2121             iMonth = 1;  in Num2Date()
2132           ++iMonth;  in Num2Date()
2133           if (iMonth > 12) {  in Num2Date()
2134             iMonth = 1;  in Num2Date()
2144     } else if (iMonth < 8) {  in Num2Date()
2145       if ((iMonth % 2 == 0)) {  in Num2Date()
2147           ++iMonth;  in Num2Date()
2148           if (iMonth > 12) {  in Num2Date()
2149             iMonth = 1;  in Num2Date()
2160           ++iMonth;  in Num2Date()
2161           if (iMonth > 12) {  in Num2Date()
2162             iMonth = 1;  in Num2Date()
2173       if (iMonth % 2 != 0) {  in Num2Date()
2175           ++iMonth;  in Num2Date()
2176           if (iMonth > 12) {  in Num2Date()
2177             iMonth = 1;  in Num2Date()
2188           ++iMonth;  in Num2Date()
2189           if (iMonth > 12) {  in Num2Date()
2190             iMonth = 1;  in Num2Date()
2205       ByteString::Format("%d%02d%02d", iYear + i, iMonth, iDay).AsStringView(),  in Num2Date()