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* ext/date/date_core.c: replacement of implementation of

_strptime.  [experimental]
	* ext/date/date_strptime.c: new.
	* ext/date/lib/date/format.rb: removed ruby version of _strptime.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31295 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
tadf 2011-04-16 12:58:28 +00:00
parent b1fd9e9215
commit ec01a8813f
4 changed files with 788 additions and 219 deletions

View file

@ -1,3 +1,10 @@
Sat Apr 16 21:55:12 2011 Tadayoshi Funaba <tadf@dotrb.org>
* ext/date/date_core.c: replacement of implementation of
_strptime. [experimental]
* ext/date/date_strptime.c: new.
* ext/date/lib/date/format.rb: removed ruby version of _strptime.
Sat Apr 16 10:18:30 2011 Kazuhiro NISHIYAMA <zn@mbf.nifty.com>
* vm.c (Init_VM): suppress warning: "OPT_BASIC_OPERATIONS" is not

View file

@ -1356,6 +1356,77 @@ date_s_today(int argc, VALUE *argv, VALUE klass)
}
}
VALUE
zone_to_diff(VALUE s)
{
return rb_funcall(cDate, rb_intern("zone_to_diff"), 1, s);
}
VALUE
date__strptime(const char *str, size_t slen,
const char *fmt, size_t flen, VALUE hash);
static VALUE
date_s__strptime_internal(int argc, VALUE *argv, VALUE klass,
const char *default_fmt)
{
VALUE vstr, vfmt, hash;
const char *str, *fmt;
size_t slen, flen;
rb_scan_args(argc, argv, "11", &vstr, &vfmt);
StringValue(vstr);
if (!rb_enc_str_asciicompat_p(vstr))
rb_raise(rb_eArgError,
"string should have ASCII compatible encoding");
str = RSTRING_PTR(vstr);
slen = RSTRING_LEN(vstr);
if (argc < 2) {
fmt = default_fmt;
flen = strlen(default_fmt);
}
else {
StringValue(vfmt);
if (!rb_enc_str_asciicompat_p(vfmt))
rb_raise(rb_eArgError,
"format should have ASCII compatible encoding");
fmt = RSTRING_PTR(vfmt);
flen = RSTRING_LEN(vfmt);
}
hash = rb_hash_new();
if (NIL_P(date__strptime(str, slen, fmt, flen, hash)))
return Qnil;
{
VALUE zone = rb_hash_aref(hash, ID2SYM(rb_intern("zone")));
VALUE left = rb_hash_aref(hash, ID2SYM(rb_intern("leftover")));
if (!NIL_P(zone)) {
rb_enc_copy(zone, vstr);
rb_hash_aset(hash, ID2SYM(rb_intern("zone")), zone);
}
if (!NIL_P(left)) {
rb_enc_copy(left, vstr);
rb_hash_aset(hash, ID2SYM(rb_intern("leftover")), left);
}
}
return hash;
}
/*
* call-seq:
* Date._strftime(string, [format="%F"])
*
* Return a hash of parsed elements.
*/
static VALUE
date_s__strptime(int argc, VALUE *argv, VALUE klass)
{
return date_s__strptime_internal(argc, argv, klass, "%F");
}
/*
* call-seq:
* d.ajd
@ -3086,6 +3157,18 @@ datetime_s_now(int argc, VALUE *argv, VALUE klass)
}
}
/*
* call-seq:
* DateTime._strftime(string, [format="%FT%T%z"])
*
* Return a hash of parsed elements.
*/
static VALUE
datetime_s__strptime(int argc, VALUE *argv, VALUE klass)
{
return date_s__strptime_internal(argc, argv, klass, "%FT%T%z");
}
/*
* call-seq:
* dt.ajd
@ -4376,6 +4459,7 @@ Init_date_core(void)
rb_define_singleton_method(cDate, "new", date_s_civil, -1);
rb_define_singleton_method(cDate, "commercial", date_s_commercial, -1);
rb_define_singleton_method(cDate, "today", date_s_today, -1);
rb_define_singleton_method(cDate, "_strptime", date_s__strptime, -1);
rb_define_method(cDate, "ajd", d_lite_ajd, 0);
rb_define_method(cDate, "amjd", d_lite_amjd, 0);
@ -4451,6 +4535,8 @@ Init_date_core(void)
rb_define_singleton_method(cDateTime, "commercial",
datetime_s_commercial, -1);
rb_define_singleton_method(cDateTime, "now", datetime_s_now, -1);
rb_define_singleton_method(cDateTime, "_strptime",
datetime_s__strptime, -1);
rb_define_method(cDateTime, "ajd", dt_lite_ajd, 0);
rb_define_method(cDateTime, "amjd", dt_lite_amjd, 0);

695
ext/date/date_strptime.c Normal file
View file

@ -0,0 +1,695 @@
/*
date_strptime.c: Coded by Tadayoshi Funaba 2011
*/
#include "ruby.h"
#include "ruby/encoding.h"
#include "ruby/re.h"
#include <ctype.h>
static const char *day_names[] = {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday",
"Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat"
};
static const char *month_names[] = {
"January", "February", "March", "April",
"May", "June", "July", "August", "September",
"October", "November", "December",
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
static const char *merid_names[] = {
"am", "pm",
"a.m.", "p.m."
};
static const char *extz_pats[] = {
":z",
"::z",
":::z"
};
#define sizeof_array(o) (sizeof o / sizeof o[0])
#define f_negate(x) rb_funcall(x, rb_intern("-@"), 0)
#define f_add(x,y) rb_funcall(x, '+', 1, y)
#define f_sub(x,y) rb_funcall(x, '-', 1, y)
#define f_mul(x,y) rb_funcall(x, '*', 1, y)
#define f_div(x,y) rb_funcall(x, '/', 1, y)
#define f_mod(x,y) rb_funcall(x, '%', 1, y)
#define f_expt(x,y) rb_funcall(x, rb_intern("**"), 1, y)
#define f_lt_p(x,y) rb_funcall(x, '<', 1, y)
#define f_gt_p(x,y) rb_funcall(x, '>', 1, y)
#define f_le_p(x,y) rb_funcall(x, rb_intern("<="), 1, y)
#define f_ge_p(x,y) rb_funcall(x, rb_intern(">="), 1, y)
#define f_match(r,s) rb_funcall(r, rb_intern("match"), 1, s)
#define f_aref(o,i) rb_funcall(o, rb_intern("[]"), 1, i)
#define f_end(o,i) rb_funcall(o, rb_intern("end"), 1, i)
static int
num_pattern_p(const char *s)
{
if (isdigit(*s))
return 1;
if (*s == '%') {
s++;
if (*s == 'E' || *s == 'O')
s++;
if (*s &&
(strchr("CDdeFGgHIjkLlMmNQRrSsTUuVvWwXxYy", *s) || isdigit(*s)))
return 1;
}
return 0;
}
#define NUM_PATTERN_P() num_pattern_p(&fmt[fi + 1])
static long
read_digits(const char *s, VALUE *n, size_t width)
{
size_t l;
l = strspn(s, "0123456789");
if (l == 0)
return 0;
if (width < l)
l = width;
if ((4 * l * sizeof(char)) <= (sizeof(long)*CHAR_BIT)) {
const char *os = s;
long v;
v = 0;
while ((size_t)(s - os) < l) {
v *= 10;
v += *s - '0';
s++;
}
if (os == s)
return 0;
*n = LONG2NUM(v);
return l;
}
else {
char *s2 = ALLOCA_N(char, l + 1);
memcpy(s2, s, l);
s2[l] = '\0';
*n = rb_cstr_to_inum(s2, 10, 0);
return l;
}
}
#define set_hash(k,v) rb_hash_aset(hash, ID2SYM(rb_intern(k)), v)
#define ref_hash(k) rb_hash_aref(hash, ID2SYM(rb_intern(k)))
#define del_hash(k) rb_hash_delete(hash, ID2SYM(rb_intern(k)))
#define fail() \
{ \
set_hash("_fail", Qtrue); \
return 0; \
}
#define fail_p() (!NIL_P(ref_hash("_fail")))
#define READ_DIGITS(n,w) \
{ \
size_t l; \
l = read_digits(&str[si], &n, w); \
if (l == 0) \
fail(); \
si += l; \
}
#define READ_DIGITS_MAX(n) READ_DIGITS(n, LONG_MAX)
static int
valid_range_p(VALUE v, int a, int b)
{
if (FIXNUM_P(v)) {
int vi = FIX2INT(v);
return !(vi < a || vi > b);
}
return !(f_lt_p(v, INT2NUM(a)) || f_gt_p(v, INT2NUM(b)));
}
#define recur(fmt) \
{ \
size_t l; \
l = date__strptime_internal(&str[si], slen - si, \
fmt, sizeof fmt - 1, hash); \
if (fail_p()) \
return 0; \
si += l; \
}
static size_t
date__strptime_internal(const char *str, size_t slen,
const char *fmt, size_t flen, VALUE hash)
{
size_t si, fi;
int c;
si = fi = 0;
while (fi < flen) {
switch (fmt[fi]) {
case '%':
again:
fi++;
c = fmt[fi];
switch (c) {
case 'E':
if (fmt[fi + 1] && strchr("cCxXyY", fmt[fi + 1]))
goto again;
fi--;
goto ordinal;
case 'O':
if (fmt[fi + 1] && strchr("deHImMSuUVwWy", fmt[fi + 1]))
goto again;
fi--;
goto ordinal;
case ':':
{
int i;
for (i = 0; i < (int)sizeof_array(extz_pats); i++)
if (strncmp(extz_pats[i], &fmt[fi],
strlen(extz_pats[i])) == 0) {
fi += i;
goto again;
}
fail();
}
case 'A':
case 'a':
{
int i;
for (i = 0; i < (int)sizeof_array(day_names); i++) {
size_t l = strlen(day_names[i]);
if (strncasecmp(day_names[i], &str[si], l) == 0) {
si += l;
set_hash("wday", INT2FIX(i % 7));
goto matched;
}
}
fail();
}
case 'B':
case 'b':
case 'h':
{
int i;
for (i = 0; i < (int)sizeof_array(month_names); i++) {
size_t l = strlen(month_names[i]);
if (strncasecmp(month_names[i], &str[si], l) == 0) {
si += l;
set_hash("mon", INT2FIX((i % 12) + 1));
goto matched;
}
}
fail();
}
case 'C':
{
VALUE n;
if (NUM_PATTERN_P())
READ_DIGITS(n, 2)
else
READ_DIGITS_MAX(n)
set_hash("_cent", n);
goto matched;
}
case 'c':
recur("%a %b %e %H:%M:%S %Y");
goto matched;
case 'D':
recur("%m/%d/%y");
goto matched;
case 'd':
case 'e':
{
VALUE n;
if (str[si] == ' ') {
si++;
READ_DIGITS(n, 1);
} else {
READ_DIGITS(n, 2);
}
if (!valid_range_p(n, 1, 31))
fail();
set_hash("mday", n);
goto matched;
}
case 'F':
recur("%Y-%m-%d");
goto matched;
case 'G':
{
VALUE n;
if (NUM_PATTERN_P())
READ_DIGITS(n, 4)
else
READ_DIGITS_MAX(n)
set_hash("cwyear", n);
goto matched;
}
case 'g':
{
VALUE n;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 0, 99))
fail();
set_hash("cwyear",n);
set_hash("_cent",
INT2FIX(f_ge_p(n, INT2FIX(69)) ? 19 : 20));
goto matched;
}
case 'H':
case 'k':
{
VALUE n;
if (str[si] == ' ') {
si++;
READ_DIGITS(n, 1);
} else {
READ_DIGITS(n, 2);
}
if (!valid_range_p(n, 0, 24))
fail();
set_hash("hour", n);
goto matched;
}
case 'I':
case 'l':
{
VALUE n;
if (str[si] == ' ') {
si++;
READ_DIGITS(n, 1);
} else {
READ_DIGITS(n, 2);
}
if (!valid_range_p(n, 1, 12))
fail();
set_hash("hour", n);
goto matched;
}
case 'j':
{
VALUE n;
READ_DIGITS(n, 3);
if (!valid_range_p(n, 1, 366))
fail();
set_hash("yday", n);
goto matched;
}
case 'L':
case 'N':
{
VALUE n;
int sign = 1;
size_t osi;
if (str[si] == '-' || str[si] == '+') {
if (str[si] == '-')
sign = -1;
si++;
}
osi = si;
if (NUM_PATTERN_P())
READ_DIGITS(n, c == 'L' ? 3 : 9)
else
READ_DIGITS_MAX(n)
if (sign == -1)
n = f_negate(n);
set_hash("sec_fraction",
rb_rational_new2(n,
f_expt(INT2FIX(10),
ULONG2NUM(si - osi))));
goto matched;
}
case 'M':
{
VALUE n;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 0, 59))
fail();
set_hash("min", n);
goto matched;
}
case 'm':
{
VALUE n;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 1, 12))
fail();
set_hash("mon", n);
goto matched;
}
case 'n':
case 't':
recur(" ");
goto matched;
case 'P':
case 'p':
{
int i;
for (i = 0; i < 4; i++) {
size_t l = strlen(merid_names[i]);
if (strncasecmp(merid_names[i], &str[si], l) == 0) {
si += l;
set_hash("_merid", INT2FIX((i % 2) == 0 ? 0 : 12));
goto matched;
}
}
fail();
}
case 'Q':
{
VALUE n;
int sign = 1;
if (str[si] == '-') {
sign = -1;
si++;
}
READ_DIGITS_MAX(n);
if (sign == -1)
n = f_negate(n);
set_hash("seconds",
rb_rational_new2(n,
f_expt(INT2FIX(10),
INT2FIX(3))));
goto matched;
}
case 'R':
recur("%H:%M");
goto matched;
case 'r':
recur("%I:%M:%S %p");
goto matched;
case 'S':
{
VALUE n;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 0, 60))
fail();
set_hash("sec", n);
goto matched;
}
case 's':
{
VALUE n;
int sign = 1;
if (str[si] == '-') {
sign = -1;
si++;
}
READ_DIGITS_MAX(n);
if (sign == -1)
n = f_negate(n);
set_hash("seconds", n);
goto matched;
}
case 'T':
recur("%H:%M:%S");
goto matched;
case 'U':
case 'W':
{
VALUE n;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 0, 53))
fail();
set_hash(c == 'U' ? "wnum0" : "wnum1", n);
goto matched;
}
case 'u':
{
VALUE n;
READ_DIGITS(n, 1);
if (!valid_range_p(n, 1, 7))
fail();
set_hash("cwday", n);
goto matched;
}
case 'V':
{
VALUE n;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 1, 53))
fail();
set_hash("cweek", n);
goto matched;
}
case 'v':
recur("%e-%b-%Y");
goto matched;
case 'w':
{
VALUE n;
READ_DIGITS(n, 1);
if (!valid_range_p(n, 0, 6))
fail();
set_hash("wday", n);
goto matched;
}
case 'X':
recur("%H:%M:%S");
goto matched;
case 'x':
recur("%m/%d/%y");
goto matched;
case 'Y':
{
VALUE n;
int sign = 1;
if (str[si] == '-' || str[si] == '+') {
if (str[si] == '-')
sign = -1;
si++;
}
if (NUM_PATTERN_P())
READ_DIGITS(n, 4)
else
READ_DIGITS_MAX(n)
if (sign == -1)
n = f_negate(n);
set_hash("year", n);
goto matched;
}
case 'y':
{
VALUE n;
int sign = 1;
READ_DIGITS(n, 2);
if (!valid_range_p(n, 0, 99))
fail();
if (sign == -1)
n = f_negate(n);
set_hash("year", n);
set_hash("_cent",
INT2FIX(f_ge_p(n, INT2FIX(69)) ? 19 : 20));
goto matched;
}
case 'Z':
case 'z':
{
static const char pat_source[] =
"\\A("
"(?:gmt|utc?)?[-+]\\d+(?:[,.:]\\d+(?::\\d+)?)?"
"|[[:alpha:].\\s]+(?:standard|daylight)\\s+time\\b"
"|[[:alpha:]]+(?:\\s+dst)?\\b"
")";
static VALUE pat = Qnil;
VALUE m, b;
VALUE zone_to_diff(VALUE s);
if (NIL_P(pat)) {
pat = rb_reg_new(pat_source, sizeof pat_source - 1,
ONIG_OPTION_IGNORECASE);
rb_gc_register_mark_object(pat);
}
b = rb_backref_get();
m = f_match(pat, rb_usascii_str_new2(&str[si]));
if (!NIL_P(m)) {
VALUE s, l, o;
s = f_aref(m, INT2FIX(1));
l = f_end(m, INT2FIX(0));
o = zone_to_diff(s);
si += NUM2LONG(l);
set_hash("zone", s);
set_hash("offset", o);
rb_backref_set(b);
goto matched;
}
rb_backref_set(b);
fail();
}
case '%':
if (str[si] != '%')
fail();
si++;
goto matched;
case '+':
recur("%a %b %e %H:%M:%S %Z %Y");
goto matched;
default:
if (str[si] != '%')
fail();
si++;
if (fi < flen)
if (str[si] != fmt[fi])
fail();
si++;
goto matched;
}
case ' ':
case '\t':
case '\n':
case '\v':
case '\f':
case '\r':
while (isspace(str[si]))
si++;
fi++;
break;
default:
ordinal:
if (str[si] != fmt[fi])
fail();
si++;
fi++;
break;
matched:
fi++;
break;
}
}
{
VALUE s;
if (slen > si) {
s = rb_usascii_str_new(&str[si], slen - si);
set_hash("leftover", s);
}
}
return si;
}
VALUE
date__strptime(const char *str, size_t slen,
const char *fmt, size_t flen, VALUE hash)
{
VALUE cent, merid;
date__strptime_internal(str, slen, fmt, flen, hash);
if (fail_p())
return Qnil;
cent = ref_hash("_cent");
if (!NIL_P(cent)) {
VALUE year;
year = ref_hash("cwyear");
if (!NIL_P(year))
set_hash("cwyear", f_add(year, f_mul(cent, INT2FIX(100))));
year = ref_hash("year");
if (!NIL_P(year))
set_hash("year", f_add(year, f_mul(cent, INT2FIX(100))));
del_hash("_cent");
}
merid = ref_hash("_merid");
if (!NIL_P(merid)) {
VALUE hour;
hour = ref_hash("hour");
if (!NIL_P(hour)) {
hour = f_mod(hour, INT2FIX(12));
set_hash("hour", f_add(hour, merid));
}
del_hash("_merid");
}
return hash;
}
/*
Local variables:
c-file-style: "ruby"
End:
*/

View file

@ -179,221 +179,6 @@ class Date
end
=end
def self.num_pattern? (s) # :nodoc:
/\A%[EO]?[CDdeFGgHIjkLlMmNQRrSsTUuVvWwXxYy\d]/ =~ s || /\A\d/ =~ s
end
private_class_method :num_pattern?
def self._strptime_i(str, fmt, e) # :nodoc:
fmt.scan(/%([EO]?(?::{1,3}z|.))|(.)/m) do |s, c|
a = $&
if s
case s
when 'A', 'a'
return unless str.sub!(/\A(#{Format::DAYS.keys.join('|')})/io, '') ||
str.sub!(/\A(#{Format::ABBR_DAYS.keys.join('|')})/io, '')
val = Format::DAYS[$1.downcase] || Format::ABBR_DAYS[$1.downcase]
return unless val
e.wday = val
when 'B', 'b', 'h'
return unless str.sub!(/\A(#{Format::MONTHS.keys.join('|')})/io, '') ||
str.sub!(/\A(#{Format::ABBR_MONTHS.keys.join('|')})/io, '')
val = Format::MONTHS[$1.downcase] || Format::ABBR_MONTHS[$1.downcase]
return unless val
e.mon = val
when 'C', 'EC'
return unless str.sub!(if num_pattern?($')
then /\A([-+]?\d{1,2})/
else /\A([-+]?\d{1,})/
end, '')
val = $1.to_i
e._cent = val
when 'c', 'Ec'
return unless _strptime_i(str, '%a %b %e %H:%M:%S %Y', e)
when 'D'
return unless _strptime_i(str, '%m/%d/%y', e)
when 'd', 'e', 'Od', 'Oe'
return unless str.sub!(/\A( \d|\d{1,2})/, '')
val = $1.to_i
return unless (1..31) === val
e.mday = val
when 'F'
return unless _strptime_i(str, '%Y-%m-%d', e)
when 'G'
return unless str.sub!(if num_pattern?($')
then /\A([-+]?\d{1,4})/
else /\A([-+]?\d{1,})/
end, '')
val = $1.to_i
e.cwyear = val
when 'g'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (0..99) === val
e.cwyear = val
e._cent ||= if val >= 69 then 19 else 20 end
when 'H', 'k', 'OH'
return unless str.sub!(/\A( \d|\d{1,2})/, '')
val = $1.to_i
return unless (0..24) === val
e.hour = val
when 'I', 'l', 'OI'
return unless str.sub!(/\A( \d|\d{1,2})/, '')
val = $1.to_i
return unless (1..12) === val
e.hour = val
when 'j'
return unless str.sub!(/\A(\d{1,3})/, '')
val = $1.to_i
return unless (1..366) === val
e.yday = val
when 'L'
return unless str.sub!(if num_pattern?($')
then /\A([-+]?\d{1,3})/
else /\A([-+]?\d{1,})/
end, '')
# val = Rational($1.to_i, 10**3)
val = Rational($1.to_i, 10**$1.size)
e.sec_fraction = val
when 'M', 'OM'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (0..59) === val
e.min = val
when 'm', 'Om'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (1..12) === val
e.mon = val
when 'N'
return unless str.sub!(if num_pattern?($')
then /\A([-+]?\d{1,9})/
else /\A([-+]?\d{1,})/
end, '')
# val = Rational($1.to_i, 10**9)
val = Rational($1.to_i, 10**$1.size)
e.sec_fraction = val
when 'n', 't'
return unless _strptime_i(str, "\s", e)
when 'P', 'p'
return unless str.sub!(/\A([ap])(?:m\b|\.m\.)/i, '')
e._merid = if $1.downcase == 'a' then 0 else 12 end
when 'Q'
return unless str.sub!(/\A(-?\d{1,})/, '')
val = Rational($1.to_i, 10**3)
e.seconds = val
when 'R'
return unless _strptime_i(str, '%H:%M', e)
when 'r'
return unless _strptime_i(str, '%I:%M:%S %p', e)
when 'S', 'OS'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (0..60) === val
e.sec = val
when 's'
return unless str.sub!(/\A(-?\d{1,})/, '')
val = $1.to_i
e.seconds = val
when 'T'
return unless _strptime_i(str, '%H:%M:%S', e)
when 'U', 'W', 'OU', 'OW'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (0..53) === val
e.__send__(if s[-1,1] == 'U' then :wnum0= else :wnum1= end, val)
when 'u', 'Ou'
return unless str.sub!(/\A(\d{1})/, '')
val = $1.to_i
return unless (1..7) === val
e.cwday = val
when 'V', 'OV'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (1..53) === val
e.cweek = val
when 'v'
return unless _strptime_i(str, '%e-%b-%Y', e)
when 'w'
return unless str.sub!(/\A(\d{1})/, '')
val = $1.to_i
return unless (0..6) === val
e.wday = val
when 'X', 'EX'
return unless _strptime_i(str, '%H:%M:%S', e)
when 'x', 'Ex'
return unless _strptime_i(str, '%m/%d/%y', e)
when 'Y', 'EY'
return unless str.sub!(if num_pattern?($')
then /\A([-+]?\d{1,4})/
else /\A([-+]?\d{1,})/
end, '')
val = $1.to_i
e.year = val
when 'y', 'Ey', 'Oy'
return unless str.sub!(/\A(\d{1,2})/, '')
val = $1.to_i
return unless (0..99) === val
e.year = val
e._cent ||= if val >= 69 then 19 else 20 end
when 'Z', /\A:{0,3}z/
return unless str.sub!(/\A((?:gmt|utc?)?[-+]\d+(?:[,.:]\d+(?::\d+)?)?
|[[:alpha:].\s]+(?:standard|daylight)\s+time\b
|[[:alpha:]]+(?:\s+dst)?\b
)/ix, '')
val = $1
e.zone = val
offset = zone_to_diff(val)
e.offset = offset
when '%'
return unless str.sub!(/\A%/, '')
when '+'
return unless _strptime_i(str, '%a %b %e %H:%M:%S %Z %Y', e)
else
return unless str.sub!(Regexp.new('\\A' + Regexp.quote(a)), '')
end
else
case c
when /\A\s/
str.sub!(/\A\s+/, '')
else
return unless str.sub!(Regexp.new('\\A' + Regexp.quote(a)), '')
end
end
end
end
private_class_method :_strptime_i
def self._strptime(str, fmt='%F')
str = str.dup
e = Format::Bag.new
return unless _strptime_i(str, fmt, e)
if e._cent
if e.cwyear
e.cwyear += e._cent * 100
end
if e.year
e. year += e._cent * 100
end
end
if e._merid
if e.hour
e.hour %= 12
e.hour += e._merid
end
end
unless str.empty?
e.leftover = str
end
e.to_hash
end
def self.s3e(e, y, m, d, bc=false)
unless String === m
m = m.to_s
@ -1073,10 +858,6 @@ end
class DateTime < Date
def self._strptime(str, fmt='%FT%T%z')
super(str, fmt)
end
def iso8601_timediv(n) # :nodoc:
strftime('T%T' +
if n < 1