261008.1 · fd25c3e720385919273b5b776486d84af9aa3914

Parse the full ISO 8601 grammar in `fromdateiso8601` (#3617)

`fromdateiso8601` was `strptime("%Y-%m-%dT%H:%M:%SZ") | mktime`, which accepts only one of the many representations ISO 8601 permits. strptime cannot be extended to cover the rest portably, since it has no specifier for fractional seconds and glibc discards `%G` and `%V`.

Replace it with a parser in src/iso8601.c that handles basic and extended representations, ordinal and week dates, fractional seconds, offsets and date-only input. It uses integer arithmetic instead of `time_t`, so the results no longer depend on the platform.

This is stricter than before. Impossible dates like `2015-02-30`, which `mktime` used to normalize into March, and unpadded components like `2015-3-5T6:00:00Z` are now errors. So is any trailing input, including whitespace. Leading whitespace is rejected too; before, glibc skipped it and macOS did not. A leap second now maps to the second before it rather than the next minute. The error message has changed, and the result can now be non-integer.

@@ -1,10 +1,5 @@ # See tests/jq.test and the jq manual for more information. -# Regression test for #3276 (fails on mingw/WIN32)-fromdate-"2038-01-19T03:14:08Z"-2147483648- # %e is not available on mingw/WIN32 strftime("%A, %B %e, %Y") 1435677542.822351