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-rw-r--r--ext/date/date_parse.c1349
1 files changed, 1349 insertions, 0 deletions
diff --git a/ext/date/date_parse.c b/ext/date/date_parse.c
new file mode 100644
index 0000000000..71dca78f7e
--- /dev/null
+++ b/ext/date/date_parse.c
@@ -0,0 +1,1349 @@
+/*
+ date_parse.c: Coded by Tadayoshi Funaba 2011
+*/
+
+#include "ruby.h"
+#include "ruby/encoding.h"
+#include "ruby/re.h"
+#include <ctype.h>
+
+#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_to_s(x) rb_funcall(x, rb_intern("to_s"), 0)
+
+#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_aref2(o,i,j) rb_funcall(o, rb_intern("[]"), 2, i, j)
+#define f_begin(o,i) rb_funcall(o, rb_intern("begin"), 1, i)
+#define f_end(o,i) rb_funcall(o, rb_intern("end"), 1, i)
+#define f_aset(o,i,v) rb_funcall(o, rb_intern("[]="), 2, i, v)
+#define f_aset2(o,i,j,v) rb_funcall(o, rb_intern("[]="), 3, i, j, v)
+#define f_sub_bang(s,r,x) rb_funcall(s, rb_intern("sub!"), 2, r, x)
+#define f_gsub_bang(s,r,x) rb_funcall(s, rb_intern("gsub!"), 2, r, x)
+#define f_split(s,p) rb_funcall(s, rb_intern("split"), 1, p)
+#define f_downcase(x) rb_funcall(x, rb_intern("downcase"), 0)
+
+#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 cstr2num(s) rb_cstr_to_inum(s, 10, 0)
+#define str2num(s) rb_str_to_inum(s, 10, 0)
+
+static const char *abbr_days[] = {
+ "sun", "mon", "tue", "wed",
+ "thu", "fri", "sat"
+};
+
+static const char *abbr_months[] = {
+ "jan", "feb", "mar", "apr", "may", "jun",
+ "jul", "aug", "sep", "oct", "nov", "dec"
+};
+
+static void
+s3e(VALUE hash, VALUE y, VALUE m, VALUE d, int bc)
+{
+ VALUE c = Qnil;
+
+ if (TYPE(m) != T_STRING)
+ m = f_to_s(m);
+
+ if (!NIL_P(y) && !NIL_P(m) && NIL_P(d)) {
+ VALUE oy = y;
+ VALUE om = m;
+ VALUE od = d;
+
+ y = od;
+ m = oy;
+ d = om;
+ }
+
+ if (NIL_P(y)) {
+ if (!NIL_P(d) && RSTRING_LEN(d) > 2) {
+ y = d;
+ d = Qnil;
+ }
+ if (!NIL_P(d) && *RSTRING_PTR(d) == '\'') {
+ y = d;
+ d = Qnil;
+ }
+ }
+
+ if (!NIL_P(y)) {
+ const char *s, *bp, *ep;
+ size_t l;
+
+ s = RSTRING_PTR(y);
+ while (*s != '-' && *s != '+' && !isdigit(*s))
+ s++;
+ bp = s;
+ if (*s == '-' || *s == '+') {
+ s++;
+ }
+ l = strspn(s, "0123456789");
+ ep = s + l;
+ if (*ep) {
+ y = d;
+ d = rb_str_new(bp, ep - bp);
+ }
+ }
+
+ if (!NIL_P(m)) {
+ const char *s;
+
+ s = RSTRING_PTR(m);
+ if (*s == '\'' || RSTRING_LEN(m) > 2) {
+ /* us -> be */
+ VALUE oy = y;
+ VALUE om = m;
+ VALUE od = d;
+
+ y = om;
+ m = od;
+ d = oy;
+ }
+ }
+
+ if (!NIL_P(d)) {
+ const char *s;
+
+ s = RSTRING_PTR(d);
+ if (*s == '\'' || RSTRING_LEN(d) > 2) {
+ VALUE oy = y;
+ VALUE od = d;
+
+ y = od;
+ d = oy;
+ }
+ }
+
+ if (!NIL_P(y)) {
+ const char *s, *bp, *ep;
+ int sign = 0;
+ size_t l;
+ VALUE iy;
+
+ s = RSTRING_PTR(y);
+ while (*s != '-' && *s != '+' && !isdigit(*s))
+ s++;
+ bp = s;
+ if (*s == '-' || *s == '+') {
+ s++;
+ sign = 1;
+ }
+ if (sign)
+ c = Qfalse;
+ l = strspn(s, "0123456789");
+ ep = s + l;
+ if (l > 2)
+ c = Qfalse;
+ {
+ char *buf;
+
+ buf = ALLOC_N(char, ep - bp + 1);
+ memcpy(buf, bp, ep - bp);
+ buf[ep - bp] = '\0';
+ iy = cstr2num(buf);
+ }
+ if (bc)
+ iy = f_add(f_negate(iy), INT2FIX(1));
+ set_hash("year", iy);
+ }
+
+ if (!NIL_P(m)) {
+ const char *s, *bp, *ep;
+ size_t l;
+ VALUE im;
+
+ s = RSTRING_PTR(m);
+ while (!isdigit(*s))
+ s++;
+ bp = s;
+ l = strspn(s, "0123456789");
+ ep = s + l;
+ {
+ char *buf;
+
+ buf = ALLOC_N(char, ep - bp + 1);
+ memcpy(buf, bp, ep - bp);
+ buf[ep - bp] = '\0';
+ im = cstr2num(buf);
+ }
+ set_hash("mon", im);
+ }
+
+ if (!NIL_P(d)) {
+ const char *s, *bp, *ep;
+ size_t l;
+ VALUE id;
+
+ s = RSTRING_PTR(d);
+ while (!isdigit(*s))
+ s++;
+ bp = s;
+ l = strspn(s, "0123456789");
+ ep = s + l;
+ {
+ char *buf;
+
+ buf = ALLOC_N(char, ep - bp + 1);
+ memcpy(buf, bp, ep - bp);
+ buf[ep - bp] = '\0';
+ id = cstr2num(buf);
+ }
+ set_hash("mday", id);
+ }
+
+ if (!NIL_P(c))
+ set_hash("_comp", c);
+}
+
+#define ABBR_DAYS "sun|mon|tue|wed|thu|fri|sat"
+#define ABBR_MONTHS "jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec"
+
+static VALUE
+regcomp(const char *source, long len, int opt)
+{
+ VALUE pat;
+
+ pat = rb_reg_new(source, len, opt);
+ rb_gc_register_mark_object(pat);
+ return pat;
+}
+
+#define REGCOMP(pat,opt) \
+{ \
+ if (NIL_P(pat)) \
+ pat = regcomp(pat##_source, sizeof pat##_source - 1, opt); \
+}
+
+#define REGCOMP_0(pat) REGCOMP(pat, 0)
+#define REGCOMP_I(pat) REGCOMP(pat, ONIG_OPTION_IGNORECASE)
+
+#define SUBS(s,p,c) \
+{ \
+ return subs(s, p, hash, c); \
+}
+
+static int
+subs(VALUE str, VALUE pat, VALUE hash, int (*cb)(VALUE, VALUE))
+{
+ VALUE m;
+
+ m = f_match(pat, str);
+
+ if (NIL_P(m))
+ return 0;
+
+ {
+ VALUE be, en;
+
+ be = f_begin(m, INT2FIX(0));
+ en = f_end(m, INT2FIX(0));
+ f_aset2(str, be, LONG2NUM(NUM2LONG(en) - NUM2LONG(be)),
+ rb_str_new(" ", 1));
+ (*cb)(m, hash);
+ }
+
+ return 1;
+}
+
+static int
+day_num(VALUE s)
+{
+ int i;
+
+ for (i = 0; i < (int)sizeof_array(abbr_days); i++)
+ if (strncasecmp(abbr_days[i], RSTRING_PTR(s), 3) == 0)
+ break;
+ return i;
+}
+
+static int
+mon_num(VALUE s)
+{
+ int i;
+
+ for (i = 0; i < (int)sizeof_array(abbr_months); i++)
+ if (strncasecmp(abbr_months[i], RSTRING_PTR(s), 3) == 0)
+ break;
+ return i + 1;
+}
+
+static int
+parse_day_cb(VALUE m, VALUE hash)
+{
+ VALUE s;
+
+ s = f_aref(m, INT2FIX(1));
+ set_hash("wday", INT2FIX(day_num(s)));
+ return 1;
+}
+
+static int
+parse_day(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "\\b(" ABBR_DAYS ")[^-\\d\\s]*";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_day_cb);
+}
+
+static int
+parse_time2_cb(VALUE m, VALUE hash)
+{
+ VALUE h, min, s, f, p;
+
+ h = f_aref(m, INT2FIX(1));
+ h = str2num(h);
+
+ min = f_aref(m, INT2FIX(2));
+ if (!NIL_P(min))
+ min = str2num(min);
+
+ s = f_aref(m, INT2FIX(3));
+ if (!NIL_P(s))
+ s = str2num(s);
+
+ f = f_aref(m, INT2FIX(4));
+
+ if (!NIL_P(f))
+ f = rb_rational_new2(str2num(f),
+ f_expt(INT2FIX(10), LONG2NUM(RSTRING_LEN(f))));
+
+ p = f_aref(m, INT2FIX(5));
+
+ if (!NIL_P(p)) {
+ int ih = NUM2INT(h);
+ ih %= 12;
+ if (*RSTRING_PTR(p) == 'P' || *RSTRING_PTR(p) == 'p')
+ ih += 12;
+ h = INT2FIX(ih);
+ }
+
+ set_hash("hour", h);
+ if (!NIL_P(min))
+ set_hash("min", min);
+ if (!NIL_P(s))
+ set_hash("sec", s);
+ if (!NIL_P(f))
+ set_hash("sec_fraction", f);
+
+ return 1;
+}
+
+static int
+parse_time_cb(VALUE m, VALUE hash)
+{
+ static const char pat_source[] =
+ "\\A(\\d+)h?"
+ "(?:\\s*:?\\s*(\\d+)m?"
+ "(?:"
+ "\\s*:?\\s*(\\d+)(?:[,.](\\d+))?s?"
+ ")?"
+ ")?"
+ "(?:\\s*([ap])(?:m\\b|\\.m\\.))?";
+ static VALUE pat = Qnil;
+ VALUE s1, s2;
+
+ s1 = f_aref(m, INT2FIX(1));
+ s2 = f_aref(m, INT2FIX(2));
+
+ if (!NIL_P(s2))
+ set_hash("zone", s2);
+
+ REGCOMP_I(pat);
+
+ {
+ VALUE m = f_match(pat, s1);
+
+ if (NIL_P(m))
+ return 0;
+ parse_time2_cb(m, hash);
+ }
+
+ return 1;
+}
+
+static int
+parse_time(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "("
+ "(?:"
+ "\\d+\\s*:\\s*\\d+"
+ "(?:"
+ "\\s*:\\s*\\d+(?:[,.]\\d*)?"
+ ")?"
+ "|"
+ "\\d+\\s*h(?:\\s*\\d+m?(?:\\s*\\d+s?)?)?"
+ ")"
+ "(?:"
+ "\\s*"
+ "[ap](?:m\\b|\\.m\\.)"
+ ")?"
+ "|"
+ "\\d+\\s*[ap](?:m\\b|\\.m\\.)"
+ ")"
+ "(?:"
+ "\\s*"
+ "("
+ "(?:gmt|utc?)?[-+]\\d+(?:[,.:]\\d+(?::\\d+)?)?"
+ "|"
+ "[[:alpha:].\\s]+(?:standard|daylight)\\stime\\b"
+ "|"
+ "[[:alpha:]]+(?:\\sdst)?\\b"
+ ")"
+ ")?";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_time_cb);
+}
+
+static int
+parse_eu_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d, b;
+
+ d = f_aref(m, INT2FIX(1));
+ mon = f_aref(m, INT2FIX(2));
+ b = f_aref(m, INT2FIX(3));
+ y = f_aref(m, INT2FIX(4));
+
+ mon = INT2FIX(mon_num(mon));
+
+ s3e(hash, y, mon, d, !NIL_P(b) &&
+ (*RSTRING_PTR(b) == 'B' ||
+ *RSTRING_PTR(b) == 'b'));
+ return 1;
+}
+
+static int
+parse_eu(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "'?(\\d+)[^-\\d\\s]*"
+ "\\s*"
+ "(" ABBR_MONTHS ")[^-\\d\\s']*"
+ "(?:"
+ "\\s*"
+ "(c(?:e|\\.e\\.)|b(?:ce|\\.c\\.e\\.)|a(?:d|\\.d\\.)|b(?:c|\\.c\\.))?"
+ "\\s*"
+ "('?-?\\d+(?:(?:st|nd|rd|th)\\b)?)"
+ ")?";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_eu_cb);
+}
+
+static int
+parse_us_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d, b;
+
+ mon = f_aref(m, INT2FIX(1));
+ d = f_aref(m, INT2FIX(2));
+ b = f_aref(m, INT2FIX(3));
+ y = f_aref(m, INT2FIX(4));
+
+ mon = INT2FIX(mon_num(mon));
+
+ s3e(hash, y, mon, d, !NIL_P(b) &&
+ (*RSTRING_PTR(b) == 'B' ||
+ *RSTRING_PTR(b) == 'b'));
+ return 1;
+}
+
+static int
+parse_us(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "\\b(" ABBR_MONTHS ")[^-\\d\\s']*"
+ "\\s*"
+ "('?\\d+)[^-\\d\\s']*"
+ "(?:"
+ "\\s*"
+ "(c(?:e|\\.e\\.)|b(?:ce|\\.c\\.e\\.)|a(?:d|\\.d\\.)|b(?:c|\\.c\\.))?"
+ "\\s*"
+ "('?-?\\d+)"
+ ")?";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_us_cb);
+}
+
+static int
+parse_iso_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d;
+
+ y = f_aref(m, INT2FIX(1));
+ mon = f_aref(m, INT2FIX(2));
+ d = f_aref(m, INT2FIX(3));
+
+ s3e(hash, y, mon, d, 0);
+ return 1;
+}
+
+static int
+parse_iso(VALUE str, VALUE hash)
+{
+ static const char pat_source[] = "('?[-+]?\\d+)-(\\d+)-('?-?\\d+)";
+ static VALUE pat = Qnil;
+
+ REGCOMP_0(pat);
+ SUBS(str, pat, parse_iso_cb);
+}
+
+static int
+parse_iso21_cb(VALUE m, VALUE hash)
+{
+ VALUE y, w, d;
+
+ y = f_aref(m, INT2FIX(1));
+ w = f_aref(m, INT2FIX(2));
+ d = f_aref(m, INT2FIX(3));
+
+ if (!NIL_P(y))
+ set_hash("cwyear", str2num(y));
+ set_hash("cweek", str2num(w));
+ if (!NIL_P(d))
+ set_hash("cwday", str2num(d));
+
+ return 1;
+}
+
+static int
+parse_iso21(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "\\b(\\d{2}|\\d{4})?-?w(\\d{2})(?:-?(\\d))?\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_iso21_cb);
+}
+
+static int
+parse_iso22_cb(VALUE m, VALUE hash)
+{
+ VALUE d;
+
+ d = f_aref(m, INT2FIX(1));
+ set_hash("cwday", str2num(d));
+ return 1;
+}
+
+static int
+parse_iso22(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "-w-(\\d)\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_iso22_cb);
+}
+
+static int
+parse_iso23_cb(VALUE m, VALUE hash)
+{
+ VALUE mon, d;
+
+ mon = f_aref(m, INT2FIX(1));
+ d = f_aref(m, INT2FIX(2));
+
+ if (!NIL_P(mon))
+ set_hash("mon", str2num(mon));
+ set_hash("mday", str2num(d));
+
+ return 1;
+}
+
+static int
+parse_iso23(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "--(\\d{2})?-(\\d{2})\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_0(pat);
+ SUBS(str, pat, parse_iso23_cb);
+}
+
+static int
+parse_iso24_cb(VALUE m, VALUE hash)
+{
+ VALUE mon, d;
+
+ mon = f_aref(m, INT2FIX(1));
+ d = f_aref(m, INT2FIX(2));
+
+ set_hash("mon", str2num(mon));
+ if (!NIL_P(d))
+ set_hash("mday", str2num(d));
+
+ return 1;
+}
+
+static int
+parse_iso24(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "--(\\d{2})(\\d{2})?\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_0(pat);
+ SUBS(str, pat, parse_iso24_cb);
+}
+
+static int
+parse_iso25_cb(VALUE m, VALUE hash)
+{
+ VALUE y, d;
+
+ y = f_aref(m, INT2FIX(1));
+ d = f_aref(m, INT2FIX(2));
+
+ set_hash("year", str2num(y));
+ set_hash("yday", str2num(d));
+
+ return 1;
+}
+
+static int
+parse_iso25(VALUE str, VALUE hash)
+{
+ static const char pat0_source[] =
+ "[,.](\\d{2}|\\d{4})-\\d{3}\\b";
+ static VALUE pat0 = Qnil;
+ static const char pat_source[] =
+ "\\b(\\d{2}|\\d{4})-(\\d{3})\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_0(pat0);
+ REGCOMP_0(pat);
+
+ if (!NIL_P(f_match(pat0, str)))
+ return 0;
+ SUBS(str, pat, parse_iso25_cb);
+}
+
+static int
+parse_iso26_cb(VALUE m, VALUE hash)
+{
+ VALUE d;
+
+ d = f_aref(m, INT2FIX(1));
+ set_hash("yday", str2num(d));
+
+ return 1;
+}
+static int
+parse_iso26(VALUE str, VALUE hash)
+{
+ static const char pat0_source[] =
+ "\\d-\\d{3}\\b";
+ static VALUE pat0 = Qnil;
+ static const char pat_source[] =
+ "\\b-(\\d{3})\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_0(pat0);
+ REGCOMP_0(pat);
+
+ if (!NIL_P(f_match(pat0, str)))
+ return 0;
+ SUBS(str, pat, parse_iso26_cb);
+}
+
+static int
+parse_iso2(VALUE str, VALUE hash)
+{
+ if (parse_iso21(str, hash))
+ goto ok;
+ if (parse_iso22(str, hash))
+ goto ok;
+ if (parse_iso23(str, hash))
+ goto ok;
+ if (parse_iso24(str, hash))
+ goto ok;
+ if (parse_iso25(str, hash))
+ goto ok;
+ if (parse_iso26(str, hash))
+ goto ok;
+ return 0;
+
+ ok:
+ return 1;
+}
+
+static int
+parse_jis_cb(VALUE m, VALUE hash)
+{
+ VALUE e, y, mon, d;
+ int ep;
+
+ e = f_aref(m, INT2FIX(1));
+ y = f_aref(m, INT2FIX(2));
+ mon = f_aref(m, INT2FIX(3));
+ d = f_aref(m, INT2FIX(4));
+
+ switch (*RSTRING_PTR(e)) {
+ case 'M': case 'm': ep = 1867; break;
+ case 'T': case 't': ep = 1911; break;
+ case 'S': case 's': ep = 1925; break;
+ case 'H': case 'h': ep = 1988; break;
+ default: ep = 0; break;
+ }
+
+ set_hash("year", f_add(str2num(y), INT2FIX(ep)));
+ set_hash("mon", str2num(mon));
+ set_hash("mday", str2num(d));
+
+ return 1;
+}
+
+static int
+parse_jis(VALUE str, VALUE hash)
+{
+ static const char pat_source[] = "\\b([mtsh])(\\d+)\\.(\\d+)\\.(\\d+)";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_jis_cb);
+}
+
+static int
+parse_vms11_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d;
+
+ d = f_aref(m, INT2FIX(1));
+ mon = f_aref(m, INT2FIX(2));
+ y = f_aref(m, INT2FIX(3));
+
+ mon = INT2FIX(mon_num(mon));
+
+ s3e(hash, y, mon, d, 0);
+ return 1;
+}
+
+static int
+parse_vms11(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "('?-?\\d+)-(" ABBR_MONTHS ")[^-]*"
+ "-('?-?\\d+)";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_vms11_cb);
+}
+
+static int
+parse_vms12_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d;
+
+ mon = f_aref(m, INT2FIX(1));
+ d = f_aref(m, INT2FIX(2));
+ y = f_aref(m, INT2FIX(3));
+
+ mon = INT2FIX(mon_num(mon));
+
+ s3e(hash, y, mon, d, 0);
+ return 1;
+}
+
+static int
+parse_vms12(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "\\b(" ABBR_MONTHS ")[^-]*"
+ "-('?-?\\d+)(?:-('?-?\\d+))?";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_vms12_cb);
+}
+
+static int
+parse_vms(VALUE str, VALUE hash)
+{
+ if (parse_vms11(str, hash))
+ goto ok;
+ if (parse_vms12(str, hash))
+ goto ok;
+ return 0;
+
+ ok:
+ return 1;
+}
+
+static int
+parse_sla_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d;
+
+ y = f_aref(m, INT2FIX(1));
+ mon = f_aref(m, INT2FIX(2));
+ d = f_aref(m, INT2FIX(3));
+
+ s3e(hash, y, mon, d, 0);
+ return 1;
+}
+
+static int
+parse_sla(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "('?-?\\d+)/\\s*('?\\d+)(?:\\D\\s*('?-?\\d+))?";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_sla_cb);
+}
+
+static int
+parse_dot_cb(VALUE m, VALUE hash)
+{
+ VALUE y, mon, d;
+
+ y = f_aref(m, INT2FIX(1));
+ mon = f_aref(m, INT2FIX(2));
+ d = f_aref(m, INT2FIX(3));
+
+ s3e(hash, y, mon, d, 0);
+ return 1;
+}
+
+static int
+parse_dot(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "('?-?\\d+)\\.\\s*('?\\d+)\\.\\s*('?-?\\d+)";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_dot_cb);
+}
+
+static int
+parse_year_cb(VALUE m, VALUE hash)
+{
+ VALUE y;
+
+ y = f_aref(m, INT2FIX(1));
+ set_hash("year", str2num(y));
+ return 1;
+}
+
+static int
+parse_year(VALUE str, VALUE hash)
+{
+ static const char pat_source[] = "'(\\d+)\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_0(pat);
+ SUBS(str, pat, parse_year_cb);
+}
+
+static int
+parse_mon_cb(VALUE m, VALUE hash)
+{
+ VALUE mon;
+
+ mon = f_aref(m, INT2FIX(1));
+ set_hash("mon", INT2FIX(mon_num(mon)));
+ return 1;
+}
+
+static int
+parse_mon(VALUE str, VALUE hash)
+{
+ static const char pat_source[] = "\\b(" ABBR_MONTHS ")\\S*";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_mon_cb);
+}
+
+static int
+parse_mday_cb(VALUE m, VALUE hash)
+{
+ VALUE d;
+
+ d = f_aref(m, INT2FIX(1));
+ set_hash("mday", str2num(d));
+ return 1;
+}
+
+static int
+parse_mday(VALUE str, VALUE hash)
+{
+ static const char pat_source[] = "(\\d+)(st|nd|rd|th)\\b";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_mday_cb);
+}
+
+static int
+n2i(const char *s, int f, int w)
+{
+ int e, v, i;
+
+ e = f + w;
+ v = 0;
+ for (i = f; i < e; i++) {
+ v *= 10;
+ v += s[i] - '0';
+ }
+ return v;
+}
+
+static int
+parse_ddd_cb(VALUE m, VALUE hash)
+{
+ VALUE s1, s2, s3, s4, s5;
+ const char *cs2, *cs3, *cs5;
+ long l2, l3, l4, l5;
+
+ s1 = f_aref(m, INT2FIX(1));
+ s2 = f_aref(m, INT2FIX(2));
+ s3 = f_aref(m, INT2FIX(3));
+ s4 = f_aref(m, INT2FIX(4));
+ s5 = f_aref(m, INT2FIX(5));
+
+ cs2 = RSTRING_PTR(s2);
+ l2 = RSTRING_LEN(s2);
+
+ switch (l2) {
+ case 2:
+ if (NIL_P(s3) && !NIL_P(s4))
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ else
+ set_hash("mday", INT2FIX(n2i(cs2, 0, 2)));
+ break;
+ case 4:
+ if (NIL_P(s3) && !NIL_P(s4)) {
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ set_hash("min", INT2FIX(n2i(cs2, l2-4, 2)));
+ }
+ else {
+ set_hash("mon", INT2FIX(n2i(cs2, 0, 2)));
+ set_hash("mday", INT2FIX(n2i(cs2, 2, 2)));
+ }
+ break;
+ case 6:
+ if (NIL_P(s3) && !NIL_P(s4)) {
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ set_hash("min", INT2FIX(n2i(cs2, l2-4, 2)));
+ set_hash("hour", INT2FIX(n2i(cs2, l2-6, 2)));
+ }
+ else {
+ int y = n2i(cs2, 0, 2);
+ if (!NIL_P(s1) && *RSTRING_PTR(s1) == '-')
+ y = -y;
+ set_hash("year", INT2FIX(y));
+ set_hash("mon", INT2FIX(n2i(cs2, 2, 2)));
+ set_hash("mday", INT2FIX(n2i(cs2, 4, 2)));
+ }
+ break;
+ case 8:
+ case 10:
+ case 12:
+ case 14:
+ if (NIL_P(s3) && !NIL_P(s4)) {
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ set_hash("min", INT2FIX(n2i(cs2, l2-4, 2)));
+ set_hash("hour", INT2FIX(n2i(cs2, l2-6, 2)));
+ set_hash("mday", INT2FIX(n2i(cs2, l2-8, 2)));
+ if (l2 >= 10)
+ set_hash("mon", INT2FIX(n2i(cs2, l2-10, 2)));
+ if (l2 == 12) {
+ int y = n2i(cs2, l2-12, 2);
+ if (!NIL_P(s1) && *RSTRING_PTR(s1) == '-')
+ y = -y;
+ set_hash("year", INT2FIX(y));
+ }
+ if (l2 == 14) {
+ int y = n2i(cs2, l2-14, 4);
+ if (!NIL_P(s1) && *RSTRING_PTR(s1) == '-')
+ y = -y;
+ set_hash("year", INT2FIX(y));
+ set_hash("_comp", Qfalse);
+ }
+ }
+ else {
+ int y = n2i(cs2, 0, 4);
+ if (!NIL_P(s1) && *RSTRING_PTR(s1) == '-')
+ y = -y;
+ set_hash("year", INT2FIX(y));
+ set_hash("mon", INT2FIX(n2i(cs2, 4, 2)));
+ set_hash("mday", INT2FIX(n2i(cs2, 6, 2)));
+ if (l2 >= 10)
+ set_hash("hour", INT2FIX(n2i(cs2, 8, 2)));
+ if (l2 >= 12)
+ set_hash("min", INT2FIX(n2i(cs2, 10, 2)));
+ if (l2 >= 14)
+ set_hash("sec", INT2FIX(n2i(cs2, 12, 2)));
+ set_hash("_comp", Qfalse);
+ }
+ break;
+ case 3:
+ if (NIL_P(s3) && !NIL_P(s4)) {
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ set_hash("min", INT2FIX(n2i(cs2, l2-3, 1)));
+ }
+ else
+ set_hash("yday", INT2FIX(n2i(cs2, 0, 3)));
+ break;
+ case 5:
+ if (NIL_P(s3) && !NIL_P(s4)) {
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ set_hash("min", INT2FIX(n2i(cs2, l2-4, 2)));
+ set_hash("hour", INT2FIX(n2i(cs2, l2-5, 1)));
+ }
+ else {
+ int y = n2i(cs2, 0, 2);
+ if (!NIL_P(s1) && *RSTRING_PTR(s1) == '-')
+ y = -y;
+ set_hash("year", INT2FIX(y));
+ set_hash("yday", INT2FIX(n2i(cs2, 2, 3)));
+ }
+ break;
+ case 7:
+ if (NIL_P(s3) && !NIL_P(s4)) {
+ set_hash("sec", INT2FIX(n2i(cs2, l2-2, 2)));
+ set_hash("min", INT2FIX(n2i(cs2, l2-4, 2)));
+ set_hash("hour", INT2FIX(n2i(cs2, l2-6, 2)));
+ set_hash("mday", INT2FIX(n2i(cs2, l2-7, 1)));
+ }
+ else {
+ int y = n2i(cs2, 0, 4);
+ if (!NIL_P(s1) && *RSTRING_PTR(s1) == '-')
+ y = -y;
+ set_hash("year", INT2FIX(y));
+ set_hash("yday", INT2FIX(n2i(cs2, 4, 3)));
+ }
+ break;
+ }
+ if (!NIL_P(s3)) {
+ cs3 = RSTRING_PTR(s3);
+ l3 = RSTRING_LEN(s3);
+
+ if (!NIL_P(s4)) {
+ switch (l3) {
+ case 2:
+ case 4:
+ case 6:
+ set_hash("sec", INT2FIX(n2i(cs3, l3-2, 2)));
+ if (l3 >= 4)
+ set_hash("min", INT2FIX(n2i(cs3, l3-4, 2)));
+ if (l3 >= 6)
+ set_hash("hour", INT2FIX(n2i(cs3, l3-6, 2)));
+ break;
+ }
+ }
+ else {
+ switch (l3) {
+ case 2:
+ case 4:
+ case 6:
+ set_hash("hour", INT2FIX(n2i(cs3, 0, 2)));
+ if (l3 >= 4)
+ set_hash("min", INT2FIX(n2i(cs3, 2, 2)));
+ if (l3 >= 6)
+ set_hash("sec", INT2FIX(n2i(cs3, 4, 2)));
+ break;
+ }
+ }
+ }
+ if (!NIL_P(s4)) {
+ l4 = RSTRING_LEN(s4);
+
+ set_hash("sec_fraction",
+ rb_rational_new2(str2num(s4),
+ f_expt(INT2FIX(10), LONG2NUM(l4))));
+ }
+ if (!NIL_P(s5)) {
+ VALUE zone_to_diff(VALUE s);
+ cs5 = RSTRING_PTR(s5);
+ l5 = RSTRING_LEN(s5);
+
+ set_hash("zone", s5);
+
+ if (*cs5 == '[') {
+ char *buf = ALLOC_N(char, l5 + 1);
+ char *s1, *s2, *s3;
+ VALUE zone;
+
+ memcpy(buf, cs5, l5);
+ buf[l5 - 1] = '\0';
+
+ s1 = buf + 1;
+ s2 = index(buf, ':');
+ if (s2) {
+ *s2 = '\0';
+ s2++;
+ }
+ if (s2)
+ s3 = s2;
+ else
+ s3 = s1;
+ zone = rb_str_new2(s3);
+ set_hash("zone", zone);
+ if (isdigit(*s1))
+ *--s1 = '+';
+ set_hash("offset", zone_to_diff(rb_str_new2(s1)));
+ }
+ }
+
+ return 1;
+}
+
+static int
+parse_ddd(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "([-+]?)(\\d{2,14})"
+ "(?:"
+ "\\s*"
+ "t?"
+ "\\s*"
+ "(\\d{2,6})?(?:[,.](\\d*))?"
+ ")?"
+ "(?:"
+ "\\s*"
+ "("
+ "z\\b"
+ "|"
+ "[-+]\\d{1,4}\\b"
+ "|"
+ "\\[[-+]?\\d[^\\]]*\\]"
+ ")"
+ ")?";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_ddd_cb);
+}
+
+static int
+parse_bc_cb(VALUE m, VALUE hash)
+{
+ VALUE y;
+
+ y = ref_hash("year");
+ if (!NIL_P(y))
+ set_hash("year", f_add(f_negate(y), INT2FIX(1)));
+
+ return 1;
+}
+
+static int
+parse_bc(VALUE str, VALUE hash)
+{
+ static const char pat_source[] =
+ "\\b(bc\\b|bce\\b|b\\.c\\.|b\\.c\\.e\\.)";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_bc_cb);
+}
+
+static int
+parse_frag_cb(VALUE m, VALUE hash)
+{
+ VALUE s, n;
+
+ s = f_aref(m, INT2FIX(1));
+
+ if (!NIL_P(ref_hash("hour")) && NIL_P(ref_hash("mday"))) {
+ n = str2num(s);
+ if (f_ge_p(n, INT2FIX(1)) &&
+ f_le_p(n, INT2FIX(31)))
+ set_hash("mday", n);
+ }
+ if (!NIL_P(ref_hash("mday")) && NIL_P(ref_hash("hour"))) {
+ n = str2num(s);
+ if (f_ge_p(n, INT2FIX(0)) &&
+ f_le_p(n, INT2FIX(24)))
+ set_hash("hour", n);
+ }
+
+ return 1;
+}
+
+static int
+parse_frag(VALUE str, VALUE hash)
+{
+ static const char pat_source[] = "\\A\\s*(\\d{1,2})\\s*\\z";
+ static VALUE pat = Qnil;
+
+ REGCOMP_I(pat);
+ SUBS(str, pat, parse_frag_cb);
+}
+
+#define HAVE_ALPHA (1<<0)
+#define HAVE_DIGIT (1<<1)
+#define HAVE_DASH (1<<2)
+#define HAVE_DOT (1<<3)
+#define HAVE_SLASH (1<<4)
+
+static unsigned
+check_class(VALUE s)
+{
+ unsigned flags;
+ long i;
+
+ flags = 0;
+ for (i = 0; i < RSTRING_LEN(s); i++) {
+ if (isalpha(RSTRING_PTR(s)[i]))
+ flags |= HAVE_ALPHA;
+ if (isdigit(RSTRING_PTR(s)[i]))
+ flags |= HAVE_DIGIT;
+ if (RSTRING_PTR(s)[i] == '-')
+ flags |= HAVE_DASH;
+ if (RSTRING_PTR(s)[i] == '.')
+ flags |= HAVE_DOT;
+ if (RSTRING_PTR(s)[i] == '/')
+ flags |= HAVE_SLASH;
+ }
+ return flags;
+}
+
+#define HAVE_ALPHA_P() (check_class(str) & HAVE_ALPHA)
+#define HAVE_DIGIT_P() (check_class(str) & HAVE_DIGIT)
+#define HAVE_ELEM_P(x) ((check_class(str) & (x)) == (x))
+
+VALUE
+date__parse(VALUE str, VALUE comp)
+{
+ VALUE zone_to_diff(VALUE s);
+ VALUE backref, hash;
+
+ backref = rb_backref_get();
+ rb_match_busy(backref);
+
+ {
+ static const char pat_source[] = "[^-+',./:@[:alnum:]\\[\\]]+";
+ static VALUE pat = Qnil;
+
+ str = rb_str_dup(str);
+ REGCOMP_0(pat);
+ f_gsub_bang(str, pat, rb_str_new(" ", 1));
+ }
+
+ hash = rb_hash_new();
+ set_hash("_comp", comp);
+
+ if (HAVE_ELEM_P(HAVE_ALPHA))
+ parse_day(str, hash);
+ if (HAVE_ELEM_P(HAVE_DIGIT))
+ parse_time(str, hash);
+
+ if (HAVE_ELEM_P(HAVE_ALPHA|HAVE_DIGIT))
+ if (parse_eu(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_ALPHA|HAVE_DIGIT))
+ if (parse_us(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT|HAVE_DASH))
+ if (parse_iso(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT|HAVE_DOT))
+ if (parse_jis(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_ALPHA|HAVE_DIGIT|HAVE_DASH))
+ if (parse_vms(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT|HAVE_SLASH))
+ if (parse_sla(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT|HAVE_DOT))
+ if (parse_dot(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT))
+ if (parse_iso2(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT))
+ if (parse_year(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_ALPHA))
+ if (parse_mon(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT))
+ if (parse_mday(str, hash))
+ goto ok;
+ if (HAVE_ELEM_P(HAVE_DIGIT))
+ if (parse_ddd(str, hash))
+ goto ok;
+
+ ok:
+ if (HAVE_ELEM_P(HAVE_ALPHA))
+ parse_bc(str, hash);
+ if (HAVE_ELEM_P(HAVE_DIGIT))
+ parse_frag(str, hash);
+
+ {
+ if (RTEST(ref_hash("_comp"))) {
+ VALUE y;
+
+ y = ref_hash("cwyear");
+ if (!NIL_P(y))
+ if (f_ge_p(y, INT2FIX(0)) && f_le_p(y, INT2FIX(99))) {
+ if (f_ge_p(y, INT2FIX(69)))
+ set_hash("cwyear", f_add(y, INT2FIX(1900)));
+ else
+ set_hash("cwyear", f_add(y, INT2FIX(2000)));
+ }
+ y = ref_hash("year");
+ if (!NIL_P(y))
+ if (f_ge_p(y, INT2FIX(0)) && f_le_p(y, INT2FIX(99))) {
+ if (f_ge_p(y, INT2FIX(69)))
+ set_hash("year", f_add(y, INT2FIX(1900)));
+ else
+ set_hash("year", f_add(y, INT2FIX(2000)));
+ }
+ }
+ }
+
+ del_hash("_comp");
+
+ {
+ VALUE zone = ref_hash("zone");
+ if (!NIL_P(zone) && NIL_P(ref_hash("offset")))
+ set_hash("offset", zone_to_diff(zone));
+ }
+
+ rb_backref_set(backref);
+
+ return hash;
+}
+
+/*
+Local variables:
+c-file-style: "ruby"
+End:
+*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 15:34:20 +0000