Converts @time_ into an RFC 3339 encoded string, relative to the
Coordinated Universal Time (UTC). This is one of the many formats
allowed by ISO 8601.
ISO 8601 allows a large number of date/time formats, with or without
punctuation and optional elements. The format returned by this function
is a complete date and time, with optional punctuation included, the
UTC time zone represented as "Z", and the @tv_usec part included if
and only if it is nonzero, i.e. either
"YYYY-MM-DDTHH:MM:SSZ" or "YYYY-MM-DDTHH:MM:SS.fffffZ".
This corresponds to the Internet date/time format defined by
RFC 3339,
and to either of the two most-precise formats defined by
the W3C Note
Date and Time Formats.
Both of these documents are profiles of ISO 8601.
Use g_date_time_format() or g_strdup_printf() if a different
variation of ISO 8601 format is required.
If @time_ represents a date which is too large to fit into a struct tm,
%NULL will be returned. This is platform dependent. Note also that since
GTimeVal stores the number of seconds as a glong, on 32-bit systems it
is subject to the year 2038 problem. Accordingly, since GLib 2.62, this
function has been deprecated. Equivalent functionality is available using:
|[
GDateTime *dt = g_date_time_new_from_unix_utc (time_val);
iso8601_string = g_date_time_format_iso8601 (dt);
g_date_time_unref (dt);
]|
The return value of g_time_val_to_iso8601() has been nullable since GLib
2.54; before then, GLib would crash under the same conditions.
Converts @time_ into an RFC 3339 encoded string, relative to the Coordinated Universal Time (UTC). This is one of the many formats allowed by ISO 8601.
ISO 8601 allows a large number of date/time formats, with or without punctuation and optional elements. The format returned by this function is a complete date and time, with optional punctuation included, the UTC time zone represented as "Z", and the @tv_usec part included if and only if it is nonzero, i.e. either "YYYY-MM-DDTHH:MM:SSZ" or "YYYY-MM-DDTHH:MM:SS.fffffZ".
This corresponds to the Internet date/time format defined by RFC 3339, and to either of the two most-precise formats defined by the W3C Note Date and Time Formats. Both of these documents are profiles of ISO 8601.
Use g_date_time_format() or g_strdup_printf() if a different variation of ISO 8601 format is required.
If @time_ represents a date which is too large to fit into a struct tm, %NULL will be returned. This is platform dependent. Note also that since GTimeVal stores the number of seconds as a glong, on 32-bit systems it is subject to the year 2038 problem. Accordingly, since GLib 2.62, this function has been deprecated. Equivalent functionality is available using: |[ GDateTime *dt = g_date_time_new_from_unix_utc (time_val); iso8601_string = g_date_time_format_iso8601 (dt); g_date_time_unref (dt); ]|
The return value of g_time_val_to_iso8601() has been nullable since GLib 2.54; before then, GLib would crash under the same conditions.