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HttpDateTime.javaAPI DocAndroid 5.1 API7230Thu Mar 12 22:22:10 GMT 2015com.android.internal.http

HttpDateTime

public final class HttpDateTime extends Object
Helper for parsing an HTTP date.

Fields Summary
private static final String
HTTP_DATE_RFC_REGEXP
private static final String
HTTP_DATE_ANSIC_REGEXP
private static final Pattern
HTTP_DATE_RFC_PATTERN
The compiled version of the HTTP-date regular expressions.
private static final Pattern
HTTP_DATE_ANSIC_PATTERN
Constructors Summary
Methods Summary
private static intgetDate(java.lang.String dateString)

        if (dateString.length() == 2) {
            return (dateString.charAt(0) - '0") * 10
                    + (dateString.charAt(1) - '0");
        } else {
            return (dateString.charAt(0) - '0");
        }
    
private static intgetMonth(java.lang.String monthString)

        int hash = Character.toLowerCase(monthString.charAt(0)) +
                Character.toLowerCase(monthString.charAt(1)) +
                Character.toLowerCase(monthString.charAt(2)) - 3 * 'a";
        switch (hash) {
            case 22:
                return Calendar.JANUARY;
            case 10:
                return Calendar.FEBRUARY;
            case 29:
                return Calendar.MARCH;
            case 32:
                return Calendar.APRIL;
            case 36:
                return Calendar.MAY;
            case 42:
                return Calendar.JUNE;
            case 40:
                return Calendar.JULY;
            case 26:
                return Calendar.AUGUST;
            case 37:
                return Calendar.SEPTEMBER;
            case 35:
                return Calendar.OCTOBER;
            case 48:
                return Calendar.NOVEMBER;
            case 9:
                return Calendar.DECEMBER;
            default:
                throw new IllegalArgumentException();
        }
    
private static com.android.internal.http.HttpDateTime$TimeOfDaygetTime(java.lang.String timeString)

        // HH might be H
        int i = 0;
        int hour = timeString.charAt(i++) - '0";
        if (timeString.charAt(i) != ':")
            hour = hour * 10 + (timeString.charAt(i++) - '0");
        // Skip ':'
        i++;
        
        int minute = (timeString.charAt(i++) - '0") * 10
                    + (timeString.charAt(i++) - '0");
        // Skip ':'
        i++;
        
        int second = (timeString.charAt(i++) - '0") * 10
                  + (timeString.charAt(i++) - '0");

        return new TimeOfDay(hour, minute, second);        
    
private static intgetYear(java.lang.String yearString)

        if (yearString.length() == 2) {
            int year = (yearString.charAt(0) - '0") * 10
                    + (yearString.charAt(1) - '0");
            if (year >= 70) {
                return year + 1900;
            } else {
                return year + 2000;
            }
        } else if (yearString.length() == 3) {
            // According to RFC 2822, three digit years should be added to 1900.
            int year = (yearString.charAt(0) - '0") * 100
                    + (yearString.charAt(1) - '0") * 10
                    + (yearString.charAt(2) - '0");
            return year + 1900;
        } else if (yearString.length() == 4) {
             return (yearString.charAt(0) - '0") * 1000
                    + (yearString.charAt(1) - '0") * 100
                    + (yearString.charAt(2) - '0") * 10
                    + (yearString.charAt(3) - '0");
        } else {
             return 1970;
        }
    
public static longparse(java.lang.String timeString)


        int date = 1;
        int month = Calendar.JANUARY;
        int year = 1970;
        TimeOfDay timeOfDay;

        Matcher rfcMatcher = HTTP_DATE_RFC_PATTERN.matcher(timeString);
        if (rfcMatcher.find()) {
            date = getDate(rfcMatcher.group(1));
            month = getMonth(rfcMatcher.group(2));
            year = getYear(rfcMatcher.group(3));
            timeOfDay = getTime(rfcMatcher.group(4));
        } else {
            Matcher ansicMatcher = HTTP_DATE_ANSIC_PATTERN.matcher(timeString);
            if (ansicMatcher.find()) {
                month = getMonth(ansicMatcher.group(1));
                date = getDate(ansicMatcher.group(2));
                timeOfDay = getTime(ansicMatcher.group(3));
                year = getYear(ansicMatcher.group(4));
            } else {
                throw new IllegalArgumentException();
            }
        }

        // FIXME: Y2038 BUG!
        if (year >= 2038) {
            year = 2038;
            month = Calendar.JANUARY;
            date = 1;
        }

        Time time = new Time(Time.TIMEZONE_UTC);
        time.set(timeOfDay.second, timeOfDay.minute, timeOfDay.hour, date,
                month, year);
        return time.toMillis(false /* use isDst */);