diff options
Diffstat (limited to 'time/strftime.c')
| -rw-r--r-- | time/strftime.c | 102 |
1 files changed, 83 insertions, 19 deletions
diff --git a/time/strftime.c b/time/strftime.c index 5447b3e847..092739d165 100644 --- a/time/strftime.c +++ b/time/strftime.c @@ -33,6 +33,7 @@ # include "../locale/localeinfo.h" #endif +#include <ctype.h> #include <sys/types.h> /* Some systems define `time_t' here. */ #ifdef TIME_WITH_SYS_TIME @@ -161,20 +162,59 @@ localtime_r (t, tp) #endif /* ! defined (_LIBC) */ -#define add(n, f) \ +static const char spaces[16] = " "; +#define add(n, f) \ do \ { \ - i += (n); \ + int _n = (n); \ + int _delta = width - _n; \ + i += _n + (_delta > 0 ? _delta : 0); \ if (i >= maxsize) \ return 0; \ else \ if (p) \ { \ + while (_delta > 0) \ + { \ + int _this = _delta > 16 ? 16 : _delta; \ + memcpy (p, spaces, _this); \ + p += _this; \ + _delta -= _this; \ + } \ f; \ - p += (n); \ + p += _n; \ } \ } while (0) -#define cpy(n, s) add ((n), memcpy((PTR) p, (PTR) (s), (n))) + +#define cpy(n, s) \ + add ((n), \ + if (to_lowcase) \ + memcpy_lowcase (p, (s), _n); \ + else \ + memcpy ((PTR) p, (PTR) (s), _n)) + + + +#ifdef _LIBC +# define TOUPPER(Ch) toupper (Ch) +# define TOLOWER(Ch) tolower (Ch) +#else +# define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch)) +# define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) +#endif + +static char *memcpy_lowcase __P ((char *dest, const char *src, size_t len)); + +static char * +memcpy_lowcase (dest, src, len) + char *dest; + const char *src; + size_t len; +{ + while (len-- > 0) + dest[len] = TOLOWER (src[len]); + return dest; +} #if ! HAVE_TM_GMTOFF /* Yield the difference between *A and *B, @@ -254,7 +294,7 @@ strftime (s, maxsize, format, tp) char *s; size_t maxsize; const char *format; - register const struct tm *tp; + const struct tm *tp; { int hour12 = tp->tm_hour; #ifdef _NL_CURRENT @@ -281,9 +321,9 @@ strftime (s, maxsize, format, tp) size_t month_len = strlen (f_month); const char *zone; size_t zonelen; - register size_t i = 0; - register char *p = s; - register const char *f; + size_t i = 0; + char *p = s; + const char *f; zone = 0; #if HAVE_TM_ZONE @@ -315,6 +355,8 @@ strftime (s, maxsize, format, tp) char buf[1 + (sizeof (int) < sizeof (time_t) ? INT_STRLEN_BOUND (time_t) : INT_STRLEN_BOUND (int))]; + int width = -1; + int to_lowcase = 0; #if DO_MULTIBYTE @@ -391,18 +433,35 @@ strftime (s, maxsize, format, tp) /* Check for flags that can modify a number format. */ ++f; - switch (*f) + while (1) { - case '_': - case '-': - pad = *f++; - break; + switch (*f) + { + case '_': + case '-': + case '0': + pad = *f++; + break; - default: - pad = 0; + default: + pad = 0; + break; + } break; } + /* As a GNU extension we allow to specify the field width. */ + if (isdigit (*f)) + { + width = 0; + do + { + width *= 10; + width += *f - '0'; + } + while (isdigit (*++f)); + } + /* Check for modifiers. */ switch (*f) { @@ -468,10 +527,10 @@ strftime (s, maxsize, format, tp) subformat: { - size_t len = strftime (p, maxsize - i, subfmt, tp); + size_t len = strftime (NULL, maxsize - i, subfmt, tp); if (len == 0 && *subfmt) return 0; - add (len, ;); + add (len, strftime (p, maxsize - i, subfmt, tp)); } break; @@ -527,8 +586,9 @@ strftime (s, maxsize, format, tp) jump to one of these two labels. */ do_number_spacepad: - /* Force `_' flag. */ - pad = '_'; + /* Force `_' flag unless overwritten by `0' flag. */ + if (pad != '0') + pad = '_'; do_number: /* Format the number according to the MODIFIER flag. */ @@ -638,6 +698,10 @@ strftime (s, maxsize, format, tp) add (1, *p = '\n'); break; + case 'P': + to_lowcase = 1; + /* FALLTHROUGH */ + case 'p': cpy (ap_len, ampm); break; |