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strftime — ???դȻ??֤??ե????ޥå?

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Standard C Library (libc, -lc)

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<time.h> size_t strftime(char *buf, size_t maxsize, const char *format, const struct tm *timeptr)

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strftime() ?ؿ??ϡ? timeptr ?????ξ????? format ?ˤ??äƻؤ?????ʸ?????˽??äƥХåե? buf ?˥ե????ޥåȤ??ޤ???

format ʸ?????ϡ?0 ?ʾ????Ѵ????ꤪ?????̾???ʸ?????鹽???????ޤ??? ???٤Ƥ??̾?ʸ???ϡ?ľ?ܥХåե??˥??ԡ??????ޤ??? ?Ѵ??????ϡ??ѡ??????ȵ??? “‘%’” ?Ȥ⤦ 1 ?Ĥ?ʸ?????鹽???????ޤ???

?????ˤ? maxsize ?Ĥ?Ķ???ʤ?ʸ?????֤????ޤ??? ???̤Ȥ?????????ʸ????????????ü?Υ̥?ʸ?????ޤ??? maxsize ??Ķ???ʤ??????ϡ? strftime() ?Ͻ?ü?Υ̥????????ʤ???????????ʸ???????֤??ޤ??? ?????ʳ??ξ????? 0 ???֤????Хåե??????Ƥ??????ˤʤ??ޤ???

?Ѵ??????ϡ??ʲ??˼????褦?ʷ???Ÿ?????????Хåե??˥??ԡ??????ޤ? :

%A

?ƹ???ɽ???Ǵ?????????̾???֤??????????ޤ???

%a

?ƹ???ɽ???Ǿ?ά????????̾???֤??????????ޤ??? ?????ǡ?ά?ΤϺǽ??? 3 ʸ???Ǥ???

%B

?ƹ???ɽ???Ǵ????ʷ?̾???֤??????????ޤ???

%b

?ƹ???ɽ???Ǿ?ά??????̾???֤??????????ޤ??? ?????ǡ?ά?ΤϺǽ??? 3 ʸ???Ǥ???

%C

(????ǯ / 100) ?? 10 ?ʿ????֤??????????ޤ??? 1 ???ο????????ˤ? 0 ???դ??ޤ???

%c

?ƹ???ɽ???ǻ????????դ??֤??????????ޤ??? ?񼰤? ctime(3) ?????????????Τ?Ʊ?ͤǤ??ꡢ"%a %Ef %T %Y" ???????Ǥ??? ?????Ϥޤ???"3+1+6+1+8+1+4" ?ν??ϥե????ޥåȤ???̣???ޤ???

%D

“%m/%d/%y” ??Ʊ???Ǥ???

%d

???򼨤? 10 ?ʿ? (01-31) ???֤??????????ޤ???

%E* %O*

POSIX ???ϰ???ĥ?Ǥ??? %Ec %EC %Ex %EX %Ey %EY %Od %Oe %OH %OI %Om %OM %OS %Ou %OU %OV %Ow %OW %Oy ?Ȥ??????????󥹤ϡ?????Ū??ɽ????Ϳ???????Τȸ??ʤ????ޤ???

???ˡ?%Ef ??û?̷??η???̾???????򼨤??? ?ޤ? %EF ??Ĺ???????η??????򼨤??? ?ޤ? %OB ???̤η????η???̾???򼨤??ޤ? (ñ?Ȥǻ??Ѥ????դϻ??ꤷ?ޤ???)??

%e

???򼨤? 10 ?ʿ? (1-31) ???֤??????????ޤ??? 1 ???ο????????ˤ϶??????դ??ޤ???

%G

ɴǯ???դ???ǯ?? 10 ?ʿ????֤??????????ޤ??? ????ǯ?ϡ?????????ʬ???ޤ??????ΤȤʤ??ޤ? (???????򽵤κǽ??????Ȥ???)??

%g

“%G” ??Ʊ??ǯ?Ǥ?????ɴǯ???ʤ??? 10 ?ʿ? (00-99) ???֤??????????ޤ???

%H

(24 ???ֻ??פ?) ???֤򼨤? 10 ?ʿ? (00-23) ???֤??????????ޤ???

%h

%b ??Ʊ???Ǥ???

%I

(12 ???ֻ??פ?) ???֤򼨤? 10 ?ʿ? (01-12) ???֤??????????ޤ???

%j

1 ǯ?????򼨤? 10 ?ʿ? (001-366) ???֤??????????ޤ???

%k

(24 ???ֻ??פ?) ???֤򼨤? 10 ?ʿ? (0-23) ???֤??????????ޤ??? 1 ???ο????????ˤ϶??????դ??ޤ???

%l

(12 ???ֻ??פ?) ???֤򼨤? 10 ?ʿ? (1-12) ???֤??????????ޤ??? 1 ???ο????????ˤ϶??????դ??ޤ???

%M

ʬ?򼨤? 10 ?ʿ? (00-59) ???֤??????????ޤ???

%m

???򼨤? 10 ?ʿ? (01-12) ???֤??????????ޤ???

%n

???Ԥ??֤??????????ޤ???

%O*

%E* ??Ʊ???Ǥ???

%p

?ƹ???ɽ???? "????" ?ޤ??? "????" ?? ?????줫????????ɽ?????֤??????????ޤ???

%R

“%H:%M” ??Ʊ???Ǥ???

%r

“%I:%M:%S %p” ??Ʊ???Ǥ???

%S

?ä򼨤? 10 ?ʿ? (00-60) ???֤??????????ޤ???

%s

????ɸ???????????????????ÿ????֤??????????ޤ? (mktime(3) ????)??

%T

“%H:%M:%S” ??Ʊ???Ǥ???

%t

???֤??֤??????????ޤ???

%U

1 ǯ?Τ????ν??? (???????򽵤κǽ??????Ȥ???) ?򼨤? 10 ?ʿ? (00-53) ???֤??????????ޤ???

%u

1 ???Τ??????? (???????򽵤κǽ??????Ȥ???) ?򼨤? 10 ?ʿ? (1-7) ???֤??????????ޤ???

%V

1 ǯ?Τ????ν??? (???????򽵤κǽ??????Ȥ???) ?򼨤? 10 ?ʿ? (01-53) ???֤??????????ޤ??? ??ǯ?? 1 ?? 1 ?????ޤཱུ?? 4 ???ʾ????????????????ϡ? ???ν????? 1 ???Ȥʤ??ޤ??? ?????ʳ??ξ????ϡ????ν?????ǯ?κǸ??ν??Ȥʤꡢ ???μ??ν????? 1 ???Ȥʤ??ޤ???

%v

“%e-%b-%Y” ??Ʊ???Ǥ???

%W

1 ǯ?Τ????ν??? (???????򽵤κǽ??????Ȥ???) ?򼨤? 10 ?ʿ? (00-53) ???֤??????????ޤ???

%w

1 ???Τ??????? (???????򽵤κǽ??????Ȥ???) ?򼨤? 10 ?ʿ? (0-6) ???֤??????????ޤ???

%X

?ƹ???ɽ???ǻ??????֤??????????ޤ???

%x

?ƹ???ɽ???????դ??֤??????????ޤ???

%Y

ɴǯ???դ???ǯ?򼨤? 10 ?ʿ????֤??????????ޤ???

%y

ɴǯ???ʤ???ǯ?򼨤? 10 ?ʿ? (00-99) ???֤??????????ޤ???

%Z

??????̾???֤??????????ޤ???

%z

?? UTC ?????λ????Ӥκ????֤??Ѥ??????ޤ??? ??Ƭ?Υץ饹?????? UTC ??????????̣???? ?ޥ??ʥ??????? UTC ??????????̣???ޤ??? ³?????֤?ʬ?ϡ????줾?? 2 ???Ǥ??ꡢ?֤˶??ڤ?ʸ???Ϥ????ޤ??? (RFC 822 ?????إå??˶??̤Ǥ?)??

%+

?ƹ???ɽ???????դȻ????򼨤????Τ??֤??????????ޤ? (?ե????ޥåȤ? date(1) ?ˤ??äƺ????????????Τ?Ʊ???Ǥ?)??

%%

‘%’ ???֤??????????ޤ???

??Ϣ????

date(1), printf(1), ctime(3), printf(3), strptime(3)

????

strftime() ?ؿ??ϡ? ‘%C’, ‘%D’, ‘%E*’, ‘%e’, ‘%G’, ‘%g’, ‘%h’, ‘%k’, ‘%l’, ‘%n’, ‘%O*’, ‘%R’, ‘%r’, ‘%s’, ‘%T’, ‘%t’, ‘%u’, ‘%V’, ‘%z’, ‘%+’ ?ʤɤ??ޤ?¿???γ?ĥ???ޤ??ơ? ISO/IEC 9899:1990 (“ISO C90”) ??Ŭ?礷?Ƥ??ޤ???

‘%G’, ‘%g’, ?????? ‘%V’ ???֤??????ˤ??????ü??ʽ?????????ǯ???ϡ? ISO 8601: 1988 ???????????Ƥ??ޤ???

?Х?

???ξݤ˴ؤ????Ѵ????????????Ƥ??ޤ?????