| string(TIMESTAMP timestamp "[%Y-%m-%d %H:%M:%S] %s" UTC) | |
| string(TIMESTAMP unix_time "%s") | |
| string(TIMESTAMP year "%Y" UTC) | |
| string(TIMESTAMP days "%j" UTC) | |
| # Doing proper date calculations here to verify unix timestamps | |
| # could be error prone. | |
| # At the very least use some safe lower and upper bounds to | |
| # see if we are somewhere in the right region. | |
| math(EXPR years_since_epoch "${year} - 1970") | |
| math(EXPR lower_bound "((${years_since_epoch} * 365) + ${days} - 1) * 86400") | |
| math(EXPR upper_bound "((${years_since_epoch} * 366) + ${days}) * 86400") | |
| if(unix_time GREATER_EQUAL lower_bound AND unix_time LESS upper_bound) | |
| message("~${unix_time}~") | |
| else() | |
| message(FATAL_ERROR "${timestamp} unix time not in expected range [${lower_bound}, ${upper_bound})") | |
| endif() |