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37 .Nd format date and time
44 .Fa "char * restrict buf"
46 .Fa "const char * restrict format"
47 .Fa "const struct tm * restrict timeptr"
50 .Fn strftime_l "char *restrict buf" "size_t maxsize" "const char * restrict format" "const struct tm *restrict timeptr" "locale_t loc"
54 function formats the information from
58 according to the string pointed to by
64 but takes an explicit locale rather than using the current locale.
68 string consists of zero or more conversion specifications and
70 All ordinary characters are copied directly into the buffer.
71 A conversion specification consists of a percent sign
73 and one other character.
77 characters will be placed into the array.
78 If the total number of resulting characters, including the terminating
79 NUL character, is not more than
82 returns the number of characters in the array, not counting the
84 Otherwise, zero is returned and the buffer contents are indeterminate.
86 The conversion specifications are copied to the buffer after expansion
88 .Bl -tag -width "xxxx"
90 is replaced by national representation of the full weekday name.
92 is replaced by national representation of
93 the abbreviated weekday name.
95 is replaced by national representation of the full month name.
97 is replaced by national representation of
98 the abbreviated month name.
100 is replaced by (year / 100) as decimal number; single
101 digits are preceded by a zero.
103 is replaced by national representation of time and date.
108 is replaced by the day of the month as a decimal number (01-31).
110 POSIX locale extensions.
112 %Ec %EC %Ex %EX %Ey %EY
113 %Od %Oe %OH %OI %Om %OM
114 %OS %Ou %OU %OV %Ow %OW %Oy
115 are supposed to provide alternate
118 Additionally %OB implemented
119 to represent alternative months names
120 (used standalone, without day mentioned).
122 is replaced by the day of the month as a decimal number (1-31); single
123 digits are preceded by a blank.
128 is replaced by a year as a decimal number with century.
129 This year is the one that contains the greater part of
130 the week (Monday as the first day of the week).
132 is replaced by the same year as in
134 but as a decimal number without century (00-99).
136 is replaced by the hour (24-hour clock) as a decimal number (00-23).
141 is replaced by the hour (12-hour clock) as a decimal number (01-12).
143 is replaced by the day of the year as a decimal number (001-366).
145 is replaced by the hour (24-hour clock) as a decimal number (0-23);
146 single digits are preceded by a blank.
148 is replaced by the hour (12-hour clock) as a decimal number (1-12);
149 single digits are preceded by a blank.
151 is replaced by the minute as a decimal number (00-59).
153 is replaced by the month as a decimal number (01-12).
155 is replaced by a newline.
160 is replaced by national representation of either
161 "ante meridiem" (a.m.)
163 "post meridiem" (p.m.)
172 is replaced by the second as a decimal number (00-60).
174 is replaced by the number of seconds since the Epoch, UTC (see
180 is replaced by a tab.
182 is replaced by the week number of the year (Sunday as the first day of
183 the week) as a decimal number (00-53).
185 is replaced by the weekday (Monday as the first day of the week)
186 as a decimal number (1-7).
188 is replaced by the week number of the year (Monday as the first day of
189 the week) as a decimal number (01-53).
190 If the week containing January
191 1 has four or more days in the new year, then it is week 1; otherwise
192 it is the last week of the previous year, and the next week is week 1.
197 is replaced by the week number of the year (Monday as the first day of
198 the week) as a decimal number (00-53).
200 is replaced by the weekday (Sunday as the first day of the week)
201 as a decimal number (0-6).
203 is replaced by national representation of the time.
205 is replaced by national representation of the date.
207 is replaced by the year with century as a decimal number.
209 is replaced by the year without century as a decimal number (00-99).
211 is replaced by the time zone name.
213 is replaced by the time zone offset from UTC; a leading plus sign stands for
214 east of UTC, a minus sign for west of UTC, hours and minutes follow
215 with two digits each and no delimiter between them (common form for
216 RFC 822 date headers).
218 is replaced by national representation of the date and time
219 (the format is similar to that produced by
223 Do not do any padding when performing numerical outputs.
226 Explicitly specify space for padding.
229 Explicitly specify zero for padding.
247 with a lot of extensions including
269 The peculiar week number and year in the replacements of
281 There is no conversion specification for the phase of the moon.
285 function does not correctly handle multibyte characters in the