morningman commented on a change in pull request #3300: Use Google/CCTZ to
replace boost at timezone function
URL: https://github.com/apache/incubator-doris/pull/3300#discussion_r410857512
##########
File path: be/src/runtime/datetime_value.h
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@@ -494,6 +498,33 @@ class DateTimeValue {
return _neg ? -tmp : tmp;
}
+ bool find_cctz_time_zone(const std::string& timezone, cctz::time_zone&
ctz) const {
+ re2::StringPiece value;
+ if (time_zone_offset_format_reg.Match(timezone, 0, timezone.size(),
RE2::UNANCHORED, &value, 1)) {
+ bool postive = value[0] != '-';
+
+ //Regular expression guarantees hour and minute mush be int
+ int hour = std::stoi(value.substr(1, 2).as_string());
+ int minute = std::stoi(value.substr(4, 2).as_string());
+
+ // timezone offsets around the world extended from -12:00 to +14:00
+ if (!postive && hour > 12) {
+ return false;
+ } else if (postive && hour > 14) {
+ return false;
+ }
+ int offset = hour * 60 * 60 + minute * 60;
+ offset *= postive ? 1 : -1;
+ ctz = cctz::fixed_time_zone(cctz::seconds(offset));
+ return true;
+ } else if (timezone == "CST"){
+ // Supports offset and region timezone type, "CST" use here is
compatibility purposes.
+ ctz = cctz::fixed_time_zone(cctz::seconds(8 * 60 * 60));
Review comment:
Missing return value
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