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Diffstat (limited to 'newlib/libc/time/strftime.c')
| -rw-r--r-- | newlib/libc/time/strftime.c | 444 |
1 files changed, 0 insertions, 444 deletions
diff --git a/newlib/libc/time/strftime.c b/newlib/libc/time/strftime.c deleted file mode 100644 index 1e6154f..0000000 --- a/newlib/libc/time/strftime.c +++ /dev/null @@ -1,444 +0,0 @@ -/* - * strftime.c - * Original Author: G. Haley - * - * Places characters into the array pointed to by s as controlled by the string - * pointed to by format. If the total number of resulting characters including - * the terminating null character is not more than maxsize, returns the number - * of characters placed into the array pointed to by s (not including the - * terminating null character); otherwise zero is returned and the contents of - * the array indeterminate. - */ - -/* -FUNCTION -<<strftime>>---flexible calendar time formatter - -INDEX - strftime - -ANSI_SYNOPSIS - #include <time.h> - size_t strftime(char *<[s]>, size_t <[maxsize]>, - const char *<[format]>, const struct tm *<[timp]>); - -TRAD_SYNOPSIS - #include <time.h> - size_t strftime(<[s]>, <[maxsize]>, <[format]>, <[timp]>) - char *<[s]>; - size_t <[maxsize]>; - char *<[format]>; - struct tm *<[timp]>; - -DESCRIPTION -<<strftime>> converts a <<struct tm>> representation of the time (at -<[timp]>) into a string, starting at <[s]> and occupying no more than -<[maxsize]> characters. - -You control the format of the output using the string at <[format]>. -<<*<[format]>>> can contain two kinds of specifications: text to be -copied literally into the formatted string, and time conversion -specifications. Time conversion specifications are two-character -sequences beginning with `<<%>>' (use `<<%%>>' to include a percent -sign in the output). Each defined conversion specification selects a -field of calendar time data from <<*<[timp]>>>, and converts it to a -string in one of the following ways: - -o+ -o %a -An abbreviation for the day of the week. - -o %A -The full name for the day of the week. - -o %b -An abbreviation for the month name. - -o %B -The full name of the month. - -o %c -A string representing the complete date and time, in the form -. Mon Apr 01 13:13:13 1992 - -o %d -The day of the month, formatted with two digits. - -o %H -The hour (on a 24-hour clock), formatted with two digits. - -o %I -The hour (on a 12-hour clock), formatted with two digits. - -o %j -The count of days in the year, formatted with three digits -(from `<<001>>' to `<<366>>'). - -o %m -The month number, formatted with two digits. - -o %M -The minute, formatted with two digits. - -o %p -Either `<<AM>>' or `<<PM>>' as appropriate. - -o %S -The second, formatted with two digits. - -o %U -The week number, formatted with two digits (from `<<00>>' to `<<53>>'; -week number 1 is taken as beginning with the first Sunday in a year). -See also <<%W>>. - -o %w -A single digit representing the day of the week: Sunday is day <<0>>. - -o %W -Another version of the week number: like `<<%U>>', but counting week 1 -as beginning with the first Monday in a year. - -o -o %x -A string representing the complete date, in a format like -. Mon Apr 01 1992 - -o %X -A string representing the full time of day (hours, minutes, and -seconds), in a format like -. 13:13:13 - -o %y -The last two digits of the year. - -o %Y -The full year, formatted with four digits to include the century. - -o %Z -Defined by ANSI C as eliciting the time zone if available; it is not -available in this implementation (which accepts `<<%Z>>' but generates -no output for it). - -o %% -A single character, `<<%>>'. -o- - -RETURNS -When the formatted time takes up no more than <[maxsize]> characters, -the result is the length of the formatted string. Otherwise, if the -formatting operation was abandoned due to lack of room, the result is -<<0>>, and the string starting at <[s]> corresponds to just those -parts of <<*<[format]>>> that could be completely filled in within the -<[maxsize]> limit. - -PORTABILITY -ANSI C requires <<strftime>>, but does not specify the contents of -<<*<[s]>>> when the formatted string would require more than -<[maxsize]> characters. - -<<strftime>> requires no supporting OS subroutines. -*/ - -#include <stddef.h> -#include <stdio.h> -#include <time.h> - -static _CONST int dname_len[7] = -{6, 6, 7, 9, 8, 6, 8}; - -static _CONST char *_CONST dname[7] = -{"Sunday", "Monday", "Tuesday", "Wednesday", - "Thursday", "Friday", "Saturday"}; - -static _CONST int mname_len[12] = -{7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8}; - -static _CONST char *_CONST mname[12] = -{"January", "February", "March", "April", - "May", "June", "July", "August", "September", "October", "November", - "December"}; - -size_t -_DEFUN (strftime, (s, maxsize, format, tim_p), - char *s _AND - size_t maxsize _AND - _CONST char *format _AND - _CONST struct tm *tim_p) -{ - size_t count = 0; - int i; - - for (;;) - { - while (*format && *format != '%') - { - if (count < maxsize - 1) - s[count++] = *format++; - else - return 0; - } - - if (*format == '\0') - break; - - format++; - switch (*format) - { - case 'a': - for (i = 0; i < 3; i++) - { - if (count < maxsize - 1) - s[count++] = - dname[tim_p->tm_wday][i]; - else - return 0; - } - break; - case 'A': - for (i = 0; i < dname_len[tim_p->tm_wday]; i++) - { - if (count < maxsize - 1) - s[count++] = - dname[tim_p->tm_wday][i]; - else - return 0; - } - break; - case 'b': - for (i = 0; i < 3; i++) - { - if (count < maxsize - 1) - s[count++] = - mname[tim_p->tm_mon][i]; - else - return 0; - } - break; - case 'B': - for (i = 0; i < mname_len[tim_p->tm_mon]; i++) - { - if (count < maxsize - 1) - s[count++] = - mname[tim_p->tm_mon][i]; - else - return 0; - } - break; - case 'c': - if (count < maxsize - 24) - { - for (i = 0; i < 3; i++) - s[count++] = - dname[tim_p->tm_wday][i]; - s[count++] = ' '; - for (i = 0; i < 3; i++) - s[count++] = - mname[tim_p->tm_mon][i]; - - sprintf (&s[count], - " %.2d %2.2d:%2.2d:%2.2d %.4d", - tim_p->tm_mday, tim_p->tm_hour, - tim_p->tm_min, - tim_p->tm_sec, 1900 + - tim_p->tm_year); - count += 17; - } - else - return 0; - break; - case 'd': - if (count < maxsize - 2) - { - sprintf (&s[count], "%.2d", - tim_p->tm_mday); - count += 2; - } - else - return 0; - break; - case 'H': - if (count < maxsize - 2) - { - sprintf (&s[count], "%2.2d", - tim_p->tm_hour); - count += 2; - } - else - return 0; - break; - case 'I': - if (count < maxsize - 2) - { - if (tim_p->tm_hour == 0 || - tim_p->tm_hour == 12) - { - s[count++] = '1'; - s[count++] = '2'; - } - else - { - sprintf (&s[count], "%.2d", - tim_p->tm_hour % 12); - count += 2; - } - } - else - return 0; - break; - case 'j': - if (count < maxsize - 3) - { - sprintf (&s[count], "%.3d", - tim_p->tm_yday + 1); - count += 3; - } - else - return 0; - break; - case 'm': - if (count < maxsize - 2) - { - sprintf (&s[count], "%.2d", - tim_p->tm_mon + 1); - count += 2; - } - else - return 0; - break; - case 'M': - if (count < maxsize - 2) - { - sprintf (&s[count], "%2.2d", - tim_p->tm_min); - count += 2; - } - else - return 0; - break; - case 'p': - if (count < maxsize - 2) - { - if (tim_p->tm_hour < 12) - s[count++] = 'A'; - else - s[count++] = 'P'; - - s[count++] = 'M'; - } - else - return 0; - break; - case 'S': - if (count < maxsize - 2) - { - sprintf (&s[count], "%2.2d", - tim_p->tm_sec); - count += 2; - } - else - return 0; - break; - case 'U': - if (count < maxsize - 2) - { - sprintf (&s[count], "%2.2d", - (tim_p->tm_yday + 7 - - tim_p->tm_wday) / 7); - count += 2; - } - else - return 0; - break; - case 'w': - if (count < maxsize - 1) - { - sprintf (&s[count], "%1.1d", - tim_p->tm_wday); - count++; - } - else - return 0; - break; - case 'W': - if (count < maxsize - 2) - { - sprintf (&s[count], "%2.2d", - (tim_p->tm_yday + ((8 - - tim_p->tm_wday) % 7)) / 7); - count += 2; - } - else - return 0; - break; - case 'x': - if (count < maxsize - 15) - { - for (i = 0; i < 3; i++) - s[count++] = - dname[tim_p->tm_wday][i]; - s[count++] = ' '; - for (i = 0; i < 3; i++) - s[count++] = - mname[tim_p->tm_mon][i]; - - sprintf (&s[count], - " %.2d %.4d", tim_p->tm_mday, - 1900 + tim_p->tm_year); - count += 8; - } - else - return 0; - break; - case 'X': - if (count < maxsize - 8) - { - sprintf (&s[count], - "%2.2d:%2.2d:%2.2d", - tim_p->tm_hour, tim_p->tm_min, - tim_p->tm_sec); - count += 8; - } - else - return 0; - break; - case 'y': - if (count < maxsize - 2) - { - /* The year could be greater than 100, so we need the value - modulo 100. The year could be negative, so we need to - correct for a possible negative remainder. */ - sprintf (&s[count], "%2.2d", - (tim_p->tm_year % 100 + 100) % 100); - count += 2; - } - else - return 0; - break; - case 'Y': - if (count < maxsize - 4) - { - sprintf (&s[count], "%.4d", - 1900 + tim_p->tm_year); - count += 4; - } - else - return 0; - break; - case 'Z': - break; - case '%': - if (count < maxsize - 1) - s[count++] = '%'; - else - return 0; - break; - } - if (*format) - format++; - else - break; - } - s[count] = '\0'; - - return count; -} |