content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package mf.org.apache.xerces.impl.dv.xs;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  
  import mf.javax.xml.datatype.DatatypeConstants;
  import mf.javax.xml.datatype.Duration;
  import mf.org.apache.xerces.impl.dv.InvalidDatatypeValueException;
  import mf.org.apache.xerces.impl.dv.ValidationContext;
  
  /**
   * Validator for &lt;duration&gt; datatype (W3C Schema Datatypes)
   *
   * @author Elena Litani
   * @author Gopal Sharma, SUN Microsystem Inc.
   * @version $Id: DurationDV.java 937741 2010-04-25 04:25:46Z mrglavas $
   * @xerces.internal
   */
  public class DurationDV extends AbstractDateTimeDV {
  
      public static final int DURATION_TYPE = 0;
      public static final int YEARMONTHDURATION_TYPE = 1;
      public static final int DAYTIMEDURATION_TYPE = 2;
      // order-relation on duration is a partial order. The dates below are used to
      // for comparison of 2 durations, based on the fact that
      // duration x and y is x<=y iff s+x<=s+y
      // see 3.2.6 duration W3C schema datatype specs
      //
      // the dates are in format: {CCYY,MM,DD, H, S, M, MS, timezone}
      private final static DateTimeData[] DATETIMES = {
              new DateTimeData(1696, 9, 1, 0, 0, 0, 'Z', null, true, null),
              new DateTimeData(1697, 2, 1, 0, 0, 0, 'Z', null, true, null),
              new DateTimeData(1903, 3, 1, 0, 0, 0, 'Z', null, true, null),
              new DateTimeData(1903, 7, 1, 0, 0, 0, 'Z', null, true, null)};
  
      @Override
      public Object getActualValue(String content, ValidationContext context) throws InvalidDatatypeValueException {
          try {
              return parse(content, DURATION_TYPE);
          } catch (Exception ex) {
              throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{content, "duration"});
          }
      }
  
      /**
       * Parses, validates and computes normalized version of duration object
       *
       * @param str          The lexical representation of duration object PnYn MnDTnH nMnS
       * @param durationType
       * @return normalized date representation
       * @throws SchemaDateTimeException Invalid lexical representation
       */
      protected DateTimeData parse(String str, int durationType) throws SchemaDateTimeException {
          int len = str.length();
          DateTimeData date = new DateTimeData(str, this);
  
          int start = 0;
          char c = str.charAt(start++);
          if (c != 'P' && c != '-') {
              throw new SchemaDateTimeException();
          } else {
              date.utc = (c == '-') ? '-' : 0;
              if (c == '-' && str.charAt(start++) != 'P') {
                  throw new SchemaDateTimeException();
              }
          }
  
          int negate = 1;
          //negative duration
          if (date.utc == '-') {
              negate = -1;
  
          }
          //at least one number and designator must be seen after P
          boolean designator = false;
  
          int endDate = indexOf(str, start, len, 'T');
          if (endDate == -1) {
              endDate = len;
          } else if (durationType == YEARMONTHDURATION_TYPE) {
              throw new SchemaDateTimeException();
          }
  
          //find 'Y'
          int end = indexOf(str, start, endDate, 'Y');
          if (end != -1) {
  
              if (durationType == DAYTIMEDURATION_TYPE) {
                  throw new SchemaDateTimeException();
              }
  
              //scan year
              date.year = negate * parseInt(str, start, end);
              start = end + 1;
              designator = true;
          }
  
          end = indexOf(str, start, endDate, 'M');
          if (end != -1) {
  
              if (durationType == DAYTIMEDURATION_TYPE) {
                  throw new SchemaDateTimeException();
              }
  
              //scan month
              date.month = negate * parseInt(str, start, end);
              start = end + 1;
              designator = true;
          }
  
          end = indexOf(str, start, endDate, 'D');
          if (end != -1) {
  
              if (durationType == YEARMONTHDURATION_TYPE) {
                  throw new SchemaDateTimeException();
              }
  
              //scan day
              date.day = negate * parseInt(str, start, end);
              start = end + 1;
              designator = true;
          }
  
          if (len == endDate && start != len) {
              throw new SchemaDateTimeException();
          }
          if (len != endDate) {
  
              //scan hours, minutes, seconds
              //REVISIT: can any item include a decimal fraction or only seconds?
              //
  
              end = indexOf(str, ++start, len, 'H');
              if (end != -1) {
                  //scan hours
                  date.hour = negate * parseInt(str, start, end);
                  start = end + 1;
                  designator = true;
              }
  
              end = indexOf(str, start, len, 'M');
              if (end != -1) {
                  //scan min
                  date.minute = negate * parseInt(str, start, end);
                  start = end + 1;
                  designator = true;
              }
  
              end = indexOf(str, start, len, 'S');
              if (end != -1) {
                  //scan seconds
                  date.second = negate * parseSecond(str, start, end);
                  start = end + 1;
                  designator = true;
              }
              // no additional data shouls appear after last item
              // P1Y1M1DT is illigal value as well
              if (start != len || str.charAt(--start) == 'T') {
                  throw new SchemaDateTimeException();
              }
          }
  
          if (!designator) {
              throw new SchemaDateTimeException();
          }
  
          return date;
      }
  
      /**
       * Compares 2 given durations. (refer to W3C Schema Datatypes "3.2.6 duration")
       *
       * @param date1  Unnormalized duration
       * @param date2  Unnormalized duration
       * @param strict (min/max)Exclusive strict == true ( LESS_THAN ) or ( GREATER_THAN )
       *               (min/max)Inclusive strict == false (LESS_EQUAL) or (GREATER_EQUAL)
       * @return INDETERMINATE if the order relationship between date1 and date2 is indeterminate.
       * EQUAL if the order relation between date1 and date2 is EQUAL.
       * If the strict parameter is true, return LESS_THAN if date1 is less than date2 and
       * return GREATER_THAN if date1 is greater than date2.
       * If the strict parameter is false, return LESS_THAN if date1 is less than OR equal to date2 and
       * return GREATER_THAN if date1 is greater than OR equal to date2
       */
      @Override
      protected short compareDates(DateTimeData date1, DateTimeData date2, boolean strict) {
  
          //REVISIT: this is unoptimazed vs of comparing 2 durations
          //         Algorithm is described in 3.2.6.2 W3C Schema Datatype specs
          //
  
          //add constA to both durations
          short resultA, resultB = INDETERMINATE;
          //try and see if the objects are equal
          resultA = compareOrder(date1, date2);
          if (resultA == 0) {
              return 0;
          }
  
          DateTimeData[] result = new DateTimeData[2];
          result[0] = new DateTimeData(null, this);
          result[1] = new DateTimeData(null, this);
  
          //long comparison algorithm is required
          DateTimeData tempA = addDuration(date1, DATETIMES[0], result[0]);
          DateTimeData tempB = addDuration(date2, DATETIMES[0], result[1]);
          resultA = compareOrder(tempA, tempB);
          if (resultA == INDETERMINATE) {
              return INDETERMINATE;
          }
  
          tempA = addDuration(date1, DATETIMES[1], result[0]);
          tempB = addDuration(date2, DATETIMES[1], result[1]);
          resultB = compareOrder(tempA, tempB);
          resultA = compareResults(resultA, resultB, strict);
          if (resultA == INDETERMINATE) {
              return INDETERMINATE;
          }
  
          tempA = addDuration(date1, DATETIMES[2], result[0]);
          tempB = addDuration(date2, DATETIMES[2], result[1]);
          resultB = compareOrder(tempA, tempB);
          resultA = compareResults(resultA, resultB, strict);
          if (resultA == INDETERMINATE) {
              return INDETERMINATE;
          }
  
          tempA = addDuration(date1, DATETIMES[3], result[0]);
          tempB = addDuration(date2, DATETIMES[3], result[1]);
          resultB = compareOrder(tempA, tempB);
          resultA = compareResults(resultA, resultB, strict);
  
          return resultA;
      }
  
      private short compareResults(short resultA, short resultB, boolean strict) {
  
          if (resultB == INDETERMINATE) {
              return INDETERMINATE;
          } else if (resultA != resultB && strict) {
              return INDETERMINATE;
          } else if (resultA != resultB && !strict) {
              if (resultA != 0 && resultB != 0) {
                  return INDETERMINATE;
              } else {
                  return (resultA != 0) ? resultA : resultB;
              }
          }
          return resultA;
      }
  
      private DateTimeData addDuration(DateTimeData date, DateTimeData addto, DateTimeData duration) {
  
          //REVISIT: some code could be shared between normalize() and this method,
          //         however is it worth moving it? The structures are different...
          //
  
          resetDateObj(duration);
          //add months (may be modified additionaly below)
          int temp = addto.month + date.month;
          duration.month = modulo(temp, 1, 13);
          int carry = fQuotient(temp, 1, 13);
  
          //add years (may be modified additionaly below)
          duration.year = addto.year + date.year + carry;
  
          //add seconds
          double dtemp = addto.second + date.second;
          carry = (int) Math.floor(dtemp / 60);
          duration.second = dtemp - carry * 60;
  
          //add minutes
          temp = addto.minute + date.minute + carry;
          carry = fQuotient(temp, 60);
          duration.minute = mod(temp, 60, carry);
  
          //add hours
          temp = addto.hour + date.hour + carry;
          carry = fQuotient(temp, 24);
          duration.hour = mod(temp, 24, carry);
  
  
          duration.day = addto.day + date.day + carry;
  
          while (true) {
  
              temp = maxDayInMonthFor(duration.year, duration.month);
              if (duration.day < 1) { //original duration was negative
                  duration.day = duration.day + maxDayInMonthFor(duration.year, duration.month - 1);
                  carry = -1;
              } else if (duration.day > temp) {
                  duration.day = duration.day - temp;
                  carry = 1;
              } else {
                  break;
              }
              temp = duration.month + carry;
              duration.month = modulo(temp, 1, 13);
              duration.year = duration.year + fQuotient(temp, 1, 13);
          }
  
          duration.utc = 'Z';
          return duration;
      }
  
      @Override
      protected double parseSecond(String buffer, int start, int end)
              throws NumberFormatException {
          int dot = -1;
          for (int i = start; i < end; i++) {
              char ch = buffer.charAt(i);
              if (ch == '.')
                  dot = i;
              else if (ch > '9' || ch < '0')
                  throw new NumberFormatException("'" + buffer + "' has wrong format");
          }
          if (dot + 1 == end) {
              throw new NumberFormatException("'" + buffer + "' has wrong format");
          }
          double value = Double.parseDouble(buffer.substring(start, end));
          if (value == Double.POSITIVE_INFINITY) {
              throw new NumberFormatException("'" + buffer + "' has wrong format");
          }
          return value;
      }
  
      @Override
      protected String dateToString(DateTimeData date) {
          StringBuffer message = new StringBuffer(30);
          if (date.year < 0 || date.month < 0 || date.day < 0
                  || date.hour < 0 || date.minute < 0 || date.second < 0) {
              message.append('-');
          }
          message.append('P');
          message.append((date.year < 0 ? -1 : 1) * date.year);
          message.append('Y');
          message.append((date.month < 0 ? -1 : 1) * date.month);
          message.append('M');
          message.append((date.day < 0 ? -1 : 1) * date.day);
          message.append('D');
          message.append('T');
          message.append((date.hour < 0 ? -1 : 1) * date.hour);
          message.append('H');
          message.append((date.minute < 0 ? -1 : 1) * date.minute);
          message.append('M');
          append2(message, (date.second < 0 ? -1 : 1) * date.second);
          message.append('S');
  
          return message.toString();
      }
  
      @Override
      protected Duration getDuration(DateTimeData date) {
          int sign = 1;
          if (date.year < 0 || date.month < 0 || date.day < 0
                  || date.hour < 0 || date.minute < 0 || date.second < 0) {
              sign = -1;
          }
          return datatypeFactory.newDuration(sign == 1,
                  date.year != DatatypeConstants.FIELD_UNDEFINED ? BigInteger.valueOf(sign * date.year) : null,
                  date.month != DatatypeConstants.FIELD_UNDEFINED ? BigInteger.valueOf(sign * date.month) : null,
                  date.day != DatatypeConstants.FIELD_UNDEFINED ? BigInteger.valueOf(sign * date.day) : null,
                  date.hour != DatatypeConstants.FIELD_UNDEFINED ? BigInteger.valueOf(sign * date.hour) : null,
                  date.minute != DatatypeConstants.FIELD_UNDEFINED ? BigInteger.valueOf(sign * date.minute) : null,
                  date.second != DatatypeConstants.FIELD_UNDEFINED ? new BigDecimal(String.valueOf(sign * date.second)) : null);
      }
  }
  