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Andrej Kozemcak
3521444a71
Patch contains tree patches which was merge to poco at once
and fix "time" issues
1 - fix(Foundation): Timezone: invalidate utcOffset cache when /etc/localtime changes
Poco commit 1850dc16aabf5980a490bb1b66086d6695abb823 introduced a
TZInfo cache for the UTC offset to avoid repeated tzset() syscalls.
The cache is invalidated only when the TZ environment variable changes.
However, the TZ variable is process-local: if a different process (e.g.
a timezone configuration daemon or an init script) changes the system
timezone by updating /etc/localtime, the running process is not notified
and its TZ environment variable remains unchanged.
On systems that switch timezone by updating /etc/localtime (a symlink)
without touching the TZ env var, the cache is therefore never invalidated
and Timezone::utcOffset() returns the stale value computed at startup.
Fix by extending cacheTZ()/tzChanged() to also track the inode and
mtime of /etc/localtime via stat(2). When either changes the cache is
considered stale and reloaded, preserving the performance benefit for
the common case where neither TZ nor /etc/localtime changes between
calls.
2 - fix(Foundation): DateTimeParser: %S consume optional fractional seconds
Parsing ISO 8601 date strings that contain both fractional seconds and a
timezone offset (e.g. "2013-10-07T08:23:19.120-04:00") with the format
"%Y-%m-%dT%H:%M:%S%z" raises a SyntaxException:
- %S consumes the integer seconds but stops at '.', leaving
".120-04:00" unconsumed.
- %z (parseTZD) is called next but sees '.' and returns without
consuming anything.
- The trailing-garbage check then raises SyntaxException.
Extend the %S case to consume and discard an optional fractional-second
suffix ('.' or ',' followed by one or more digits) immediately after
parsing the integer seconds. This mirrors the existing %s behaviour and
allows %z to see the timezone designator directly, keeping the
trailing-garbage check fully effective for truly invalid input.
3 - test(DateTimeParserTest): add ISO8601 fractional seconds parser test
Add testISO8601FracSeconds to verify that DateTimeParser correctly
handles fractional-second suffixes (dot and comma separated) in
ISO8601_FORMAT strings, and rejects malformed input such as a
bare decimal point with no digits.
Signed-off-by: Andrej Kozemcak <andrej.kozemcak@siemens.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>