/**
* Attempts to interpret the string <tt>s</tt> as a representation
* of a date and time. If the attempt is successful, the time
* indicated is returned represented as the distance, measured in
* milliseconds, of that time from the epoch (00:00:00 GMT on
* January 1, 1970). If the attempt fails, an
* <tt>IllegalArgumentException</tt> is thrown.
* <p>
* It accepts many syntaxes; in particular, it recognizes the IETF
* standard date syntax: "Sat, 12 Aug 1995 13:30:00 GMT". It also
* understands the continental U.S. time-zone abbreviations, but for
* general use, a time-zone offset should be used: "Sat, 12 Aug 1995
* 13:30:00 GMT+0430" (4 hours, 30 minutes west of the Greenwich
* meridian). If no time zone is specified, the local time zone is
* assumed. GMT and UTC are considered equivalent.
* <p>
* The string <tt>s</tt> is processed from left to right, looking for
* data of interest. Any material in <tt>s</tt> that is within the
* ASCII parenthesis characters <tt>(</tt> and <tt>)</tt> is ignored.
* Parentheses may be nested. Otherwise, the only characters permitted
* within <tt>s</tt> are these ASCII characters:
* <blockquote><pre>
* abcdefghijklmnopqrstuvwxyz
* ABCDEFGHIJKLMNOPQRSTUVWXYZ
* 0123456789,+-:/</pre></blockquote>
* and whitespace characters.<p>
* A consecutive sequence of decimal digits is treated as a decimal
* number:<ul>
* <li>If a number is preceded by <tt>+</tt> or <tt>-</tt> and a year
* has already been recognized, then the number is a time-zone
* offset. If the number is less than 24, it is an offset measured
* in hours. Otherwise, it is regarded as an offset in minutes,
* expressed in 24-hour time format without punctuation. A
* preceding <tt>-</tt> means a westward offset. Time zone offsets
* are always relative to UTC (Greenwich). Thus, for example,
* <tt>-5</tt> occurring in the string would mean "five hours west
* of Greenwich" and <tt>+0430</tt> would mean "four hours and
* thirty minutes east of Greenwich." It is permitted for the
* string to specify <tt>GMT</tt>, <tt>UT</tt>, or <tt>UTC</tt>
* redundantly-for example, <tt>GMT-5</tt> or <tt>utc+0430</tt>.
* <li>The number is regarded as a year number if one of the
* following conditions is true:
* <ul>
* <li>The number is equal to or greater than 70 and followed by a
* space, comma, slash, or end of string
* <li>The number is less than 70, and both a month and a day of
* the month have already been recognized</li>
* </ul>
* If the recognized year number is less than 100, it is
* interpreted as an abbreviated year relative to a century of
* which dates are within 80 years before and 19 years after
* the time when the Date class is initialized.
* After adjusting the year number, 1900 is subtracted from
* it. For example, if the current year is 1999 then years in
* the range 19 to 99 are assumed to mean 1919 to 1999, while
* years from 0 to 18 are assumed to mean 2000 to 2018. Note
* that this is slightly different from the interpretation of
* years less than 100 that is used in {@link java.text.SimpleDateFormat}.
* <li>If the number is followed by a colon, it is regarded as an hour,
* unless an hour has already been recognized, in which case it is
* regarded as a minute.
* <li>If the number is followed by a slash, it is regarded as a month
* (it is decreased by 1 to produce a number in the range <tt>0</tt>
* to <tt>11</tt>), unless a month has already been recognized, in
* which case it is regarded as a day of the month.
* <li>If the number is followed by whitespace, a comma, a hyphen, or
* end of string, then if an hour has been recognized but not a
* minute, it is regarded as a minute; otherwise, if a minute has
* been recognized but not a second, it is regarded as a second;
* otherwise, it is regarded as a day of the month. </ul><p>
* A consecutive sequence of letters is regarded as a word and treated
* as follows:<ul>
* <li>A word that matches <tt>AM</tt>, ignoring case, is ignored (but
* the parse fails if an hour has not been recognized or is less
* than <tt>1</tt> or greater than <tt>12</tt>).
* <li>A word that matches <tt>PM</tt>, ignoring case, adds <tt>12</tt>
* to the hour (but the parse fails if an hour has not been
* recognized or is less than <tt>1</tt> or greater than <tt>12</tt>).
* <li>Any word that matches any prefix of <tt>SUNDAY, MONDAY, TUESDAY,
* WEDNESDAY, THURSDAY, FRIDAY</tt>, or <tt>SATURDAY</tt>, ignoring
* case, is ignored. For example, <tt>sat, Friday, TUE</tt>, and
* <tt>Thurs</tt> are ignored.
* <li>Otherwise, any word that matches any prefix of <tt>JANUARY,
* FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER,
* OCTOBER, NOVEMBER</tt>, or <tt>DECEMBER</tt>, ignoring case, and
* considering them in the order given here, is recognized as
* specifying a month and is converted to a number (<tt>0</tt> to
* <tt>11</tt>). For example, <tt>aug, Sept, april</tt>, and
* <tt>NOV</tt> are recognized as months. So is <tt>Ma</tt>, which
* is recognized as <tt>MARCH</tt>, not <tt>MAY</tt>.
* <li>Any word that matches <tt>GMT, UT</tt>, or <tt>UTC</tt>, ignoring
* case, is treated as referring to UTC.
* <li>Any word that matches <tt>EST, CST, MST</tt>, or <tt>PST</tt>,
* ignoring case, is recognized as referring to the time zone in
* North America that is five, six, seven, or eight hours west of
* Greenwich, respectively. Any word that matches <tt>EDT, CDT,
* MDT</tt>, or <tt>PDT</tt>, ignoring case, is recognized as
* referring to the same time zone, respectively, during daylight
* saving time.</ul><p>
* Once the entire string s has been scanned, it is converted to a time
* result in one of two ways. If a time zone or time-zone offset has been
* recognized, then the year, month, day of month, hour, minute, and
* second are interpreted in UTC and then the time-zone offset is
* applied. Otherwise, the year, month, day of month, hour, minute, and
* second are interpreted in the local time zone.
*
* @param s a string to be parsed as a date.
* @return the number of milliseconds since January 1, 1970, 00:00:00 GMT
* represented by the string argument.
* @see java.text.DateFormat
* @deprecated As of JDK version 1.1,
* replaced by <code>DateFormat.parse(String s)</code>.
*/
@Deprecated
public static long parse(String s) {
int year = Integer.MIN_VALUE;
int mon = -1;
int mday = -1;
int hour = -1;
int min = -1;
int sec = -1;
int millis = -1;
int c = -1;
int i = 0;
int n = -1;
int wst = -1;
int tzoffset = -1;
int prevc = 0;
syntax:
{
if (s == null)
break syntax;
int limit = s.length();
while (i < limit) {
c = s.charAt(i);
i++;
if (c <= ' ' || c == ',')
continue;
if (c == '(') { // skip comments
int depth = 1;
while (i < limit) {
c = s.charAt(i);
i++;
if (c == '(') depth++;
else if (c == ')')
if (--depth <= 0)
break;
}
continue;
}
if ('0' <= c && c <= '9') {
n = c - '0';
while (i < limit && '0' <= (c = s.charAt(i)) && c <= '9') {
n = n * 10 + c - '0';
i++;
}
if (prevc == '+' || prevc == '-' && year != Integer.MIN_VALUE) {
// timezone offset
if (n < 24)
n = n * 60; // EG. "GMT-3"
else
n = n % 100 + n / 100 * 60; // eg "GMT-0430"
if (prevc == '+') // plus means east of GMT
n = -n;
if (tzoffset != 0 && tzoffset != -1)
break syntax;
tzoffset = n;
} else if (n >= 70)
if (year != Integer.MIN_VALUE)
break syntax;
else if (c <= ' ' || c == ',' || c == '/' || i >= limit)
// year = n < 1900 ? n : n - 1900;
year = n;
else
break syntax;
else if (c == ':')
if (hour < 0)
hour = (byte) n;
else if (min < 0)
min = (byte) n;
else
break syntax;
else if (c == '/')
if (mon < 0)
mon = (byte) (n - 1);
else if (mday < 0)
mday = (byte) n;
else
break syntax;
else if (i < limit && c != ',' && c > ' ' && c != '-')
break syntax;
else if (hour >= 0 && min < 0)
min = (byte) n;
else if (min >= 0 && sec < 0)
sec = (byte) n;
else if (mday < 0)
mday = (byte) n;
// Handle two-digit years < 70 (70-99 handled above).
else if (year == Integer.MIN_VALUE && mon >= 0 && mday >= 0)
year = n;
else
break syntax;
prevc = 0;
} else if (c == '/' || c == ':' || c == '+' || c == '-')
prevc = c;
else {
int st = i - 1;
while (i < limit) {
c = s.charAt(i);
if (!('A' <= c && c <= 'Z' || 'a' <= c && c <= 'z'))
break;
i++;
}
if (i <= st + 1)
break syntax;
int k;
for (k = wtb.length; --k >= 0;)
if (wtb[k].regionMatches(true, 0, s, st, i - st)) {
int action = ttb[k];
if (action != 0) {
if (action == 1) { // pm
if (hour > 12 || hour < 1)
break syntax;
else if (hour < 12)
hour += 12;
} else if (action == 14) { // am
if (hour > 12 || hour < 1)
break syntax;
else if (hour == 12)
hour = 0;
} else if (action <= 13) { // month!
if (mon < 0)
mon = (byte) (action - 2);
else
break syntax;
} else {
tzoffset = action - 10000;
}
}
break;
}
if (k < 0)
break syntax;
prevc = 0;
}
}
if (year == Integer.MIN_VALUE || mon < 0 || mday < 0)
break syntax;
// Parse 2-digit years within the correct default century.
if (year < 100) {
synchronized (Date.class) {
if (defaultCenturyStart == 0) {
defaultCenturyStart = gcal.getCalendarDate().getYear() - 80;
}
}
year += (defaultCenturyStart / 100) * 100;
if (year < defaultCenturyStart) year += 100;
}
if (sec < 0)
sec = 0;
if (min < 0)
min = 0;
if (hour < 0)
hour = 0;
BaseCalendar cal = getCalendarSystem(year);
if (tzoffset == -1) { // no time zone specified, have to use local
BaseCalendar.Date ldate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
ldate.setDate(year, mon + 1, mday);
ldate.setTimeOfDay(hour, min, sec, 0);
return cal.getTime(ldate);
}
BaseCalendar.Date udate = (BaseCalendar.Date) cal.newCalendarDate(null); // no time zone
udate.setDate(year, mon + 1, mday);
udate.setTimeOfDay(hour, min, sec, 0);
return cal.getTime(udate) + tzoffset * (60 * 1000);
}
// syntax error
throw new IllegalArgumentException();
}
軟件測試if else路徑開源代碼java中java.util.Date裏面的pase方法
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