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  Analyzed about 3 hours ago based on code collected about 3 hours ago.

Commit ID 54d88796c54e253974d5280831082ecf13cbdde7

Avatar Contributor: Thorsten Glaser Files Modified: 1
Date: 15-July-2012 at 14:25 Lines Added: 0
Repository: https://evolvis.org/anonscm/git/shellsnippets/shellsnippets.git master Lines Removed: 0
Commit Comment: time manipulation functions in Pure mksh™
POSIX (i.e. no leap second support and Y2038 problem)

available definitions:
• tm_* constants (offset of "struct tm" members in indexed array)
• mirtime_months, mirtime_wdays (mapping to strings in the "C" locale)

available functions:
• timet2mjd ${posix_timet_seconds}
⇒ ${mjd_day} ${mjd_sec}
• mjd2timet ${mjd_day} ${mjd_sec}
⇒ ${posix_timet_seconds}
• mjd_explode ${mjd_day} ${mjd_sec}
⇒ ${struct_tm[@]}
• mjd_implode ${struct_tm[@]}
⇒ ${mjd_day} ${mjd_sec}

The functions all currently share that they take and output
an array (mirtime_mjd or struct tm) in split form, i.e. one
function argument per struct member, and space-separated output.
(This works with this data.)

Not all members of struct tm are used:

When emitting a struct tm (by mjd_explode), these are hardcoded:
• tm_isdst = 0
• tm_gmtoff = 0
• tm_zone = "UTC"

When parsing a struct tm (by mjd_implode), these are ignored:
• tm_wday, tm_yday (only tm_mon+tm_mday are used)
• tm_isdst (only tm_gmtoff is used as additional offset)
• tm_zone (it's a descriptive string anyway)

This matches behaviour of the mirtime functions in MirBSD libkern
(kernel, bootloader, libc), except that no leap second information
is available, and mksh_ari_t (32 bit) is used instead of time_t.
 

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