From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001 From: Jari Vetoniemi Date: Mon, 16 Mar 2020 18:49:26 +0900 Subject: Fresh start --- jni/ruby/ext/date/date_strptime.c | 701 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 701 insertions(+) create mode 100644 jni/ruby/ext/date/date_strptime.c (limited to 'jni/ruby/ext/date/date_strptime.c') diff --git a/jni/ruby/ext/date/date_strptime.c b/jni/ruby/ext/date/date_strptime.c new file mode 100644 index 0000000..e318af1 --- /dev/null +++ b/jni/ruby/ext/date/date_strptime.c @@ -0,0 +1,701 @@ +/* + date_strptime.c: Coded by Tadayoshi Funaba 2011,2012 +*/ + +#include "ruby.h" +#include "ruby/encoding.h" +#include "ruby/re.h" +#include + +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_idiv(x,y) rb_funcall(x, rb_intern("div"), 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) + +#define issign(c) ((c) == '-' || (c) == '+') + +static int +num_pattern_p(const char *s) +{ + if (isdigit((unsigned char)*s)) + return 1; + if (*s == '%') { + s++; + if (*s == 'E' || *s == 'O') + s++; + if (*s && + (strchr("CDdeFGgHIjkLlMmNQRrSsTUuVvWwXxYy", *s) || + isdigit((unsigned char)*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; \ +} + +VALUE date_zone_to_diff(VALUE); + +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); + if (NIL_P(ref_hash("_cent"))) + 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 (issign(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 (issign(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); + if (NIL_P(ref_hash("_cent"))) + 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+)?)?" + "|(?-i:[[:alpha:].\\s]+)(?:standard|daylight)\\s+time\\b" + "|(?-i:[[:alpha:]]+)(?:\\s+dst)?\\b" + ")"; + static VALUE pat = Qnil; + VALUE m, b; + + 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(); + rb_match_busy(b); + m = f_match(pat, rb_usascii_str_new2(&str[si])); + + if (!NIL_P(m)) { + VALUE s, l, o; + + s = rb_reg_nth_match(1, m); + l = f_end(m, INT2FIX(0)); + o = date_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((unsigned char)str[si])) + si++; + fi++; + break; + default: + ordinal: + if (str[si] != fmt[fi]) + fail(); + si++; + fi++; + break; + matched: + fi++; + break; + } + } + + return si; +} + +VALUE +date__strptime(const char *str, size_t slen, + const char *fmt, size_t flen, VALUE hash) +{ + size_t si; + VALUE cent, merid; + + si = date__strptime_internal(str, slen, fmt, flen, hash); + + if (slen > si) { + VALUE s; + + s = rb_usascii_str_new(&str[si], slen - si); + set_hash("leftover", s); + } + + 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: +*/ -- cgit v1.2.3